Update freeze file

This also touches some exception handling code, be careful.

.gitignore

@@ -1,7 +1,15 @@
-dist/
-.cabal-sandbox/
-cabal.sandbox.config
-*~
 *.hp
-*.prof
 *.old
+*.prof
+*~
+.cabal-sandbox/
+.ghc.environment.*
+.liquid/
+.stack-work/
+3rdparty/hpath
+cabal.sandbox.config
+dist-newstyle/
+dist/
+hscope.out
+.ghcup
+/bin/

.travis.yml

@@ -0,0 +1,68 @@
+# See https://github.com/hvr/multi-ghc-travis for more information
+
+language: c
+
+sudo: required
+dist: trusty
+
+matrix:
+  include:
+    - env: CABALVER=1.24 GHCVER=8.0.1
+      addons: {apt: {packages: [cabal-install-1.24,ghc-8.0.1], sources: [hvr-ghc]}}
+    - env: CABALVER=2.0 GHCVER=8.2.2
+      addons: {apt: {packages: [cabal-install-2.0,ghc-8.2.2], sources: [hvr-ghc]}}
+    - env: CABALVER=2.2 GHCVER=8.4.1
+      addons: {apt: {packages: [cabal-install-2.2,ghc-8.4.1], sources: [hvr-ghc]}}
+    - env: CABALVER=head GHCVER=head
+      addons: {apt: {packages: [cabal-install-head,ghc-head,libgtk2.0-dev,libgtk-3-dev],  sources: [hvr-ghc]}}
+
+  allow_failures:
+    - env: CABALVER=head GHCVER=head
+
+env:
+  global:
+    - secure: "qAzj5tgAghFIfO6R/+Hdc5KcFhwXKNXMICNH7VLmqLzmYxk1UEkpi6hgX/f1bP5mLd07D+0IaeGFIUIWQOp+F/Du1NiX3yGbFuTt/Ja4I0K4ooCQc0w9uYLv8epxzp3VEOEI5sVCSpSomFjr7V0jwwTcBbxGUvv1VaGkJwAexRxCHuwU23KD0toECkVDsOMN/Gg2Ue/r2o+MsGx1/B9WMF0g6+zWlnrYfYZXWetl0DwATK5lZTa/21THdMrbuPX0fijGXTywvURDpCd3wIdfx9n7jPO2Gp2rcxPL/WkcIpzI211g4hEiheS+AlVyW39+C4i4MKaNK8YC+/5DRl/YHrFc7n3SZPDh+RMs6r3DS41RyRhQhz8DE0Pg4zfe/WUX4+h72TijCZ1zduh146rofwku/IGtCz5cuel+7cmTPk9ZyENYnH0ZMftkZjor9J/KamcMsN4zfaQBNJuIM3Kg8HVts3ymNIWrJ1LUn41MNt1eBDDvOWxZaHrjLyATRCFYvMr4RE01pqYKnWZ9RFfzVaYjD0QQWPWAXcCtkcAHSR6T0NxAqjLmHBNm+yWYIKG+bK2CvPNYTTNN8n4UvY1SrBpJEnLcRRns3U8nM7SVZ4GMaYzOTWtN1n0zamsl42wV0L/wqpz1SePkRZ34jca3V07XRLQSN2wjj8DyvOZUFR0="
+
+before_install:
+ - sudo apt-get install -y hscolour
+ - export PATH=/opt/ghc/$GHCVER/bin:/opt/cabal/$CABALVER/bin:$PATH
+
+install:
+ - cabal --version
+ - travis_retry cabal update
+ - cabal sandbox init
+ - cabal install alex happy
+ - export PATH="$(pwd)/.cabal-sandbox/bin:$PATH"
+ - cabal install gtk2hs-buildtools
+ - cabal install --only-dependencies --enable-tests -j
+
+script:
+ - cabal configure --enable-tests -v2
+ - cabal build
+ - cabal test
+ - cabal check
+ - cabal sdist
+# check that the generated source-distribution can be built & installed
+ - export SRC_TGZ=$(cabal info . | awk '{print $2 ".tar.gz";exit}') ;
+   cd dist/;
+   cabal sandbox init;
+   if [ -f "$SRC_TGZ" ]; then
+      cabal install alex happy;
+      export PATH="$(pwd)/.cabal-sandbox/bin:$PATH";
+      cabal install gtk2hs-buildtools;
+      cabal install "$SRC_TGZ" --enable-tests;
+   else
+      echo "expected '$SRC_TGZ' not found";
+      exit 1;
+   fi;
+   cd ..
+ - sed -i -e '/hsfm,/d' hsfm.cabal
+ - cabal haddock --executables --internal --hyperlink-source --html-location=https://hackage.haskell.org/package/\$pkg-\$version/docs/
+
+after_script:
+    - ./update-gh-pages.sh
+
+notifications:
+  email:
+    - hasufell@posteo.de
+

HACKING.md

@@ -1,29 +0,0 @@
-HACKING
-=======
-
-Coding style
-------------
-
-- match the sorroundings
-- no overcomplicated pointfree style
-- normal indenting 2 whitespaces
-- just make things pretty and readable
-
-Documentation
--------------
-
-__Everything__ must be documented. :)
-
-Hacking Guide
--------------
-
-The main data structure is in [DirTree.hs](src/Data/DirTree.hs), which
-should be seen as a library. This is then mapped into the Gtk+ GUI at
-[Gtk.hs](src/GUI/Gtk.hs) and [Utils.hs](src/GUI/Gtk/Utils.hs).
-
-File operations (like copy, delete etc) are defined at
-[File.hs](src/IO/File.hs).
-
-Note that the main data structures are still a bit in flux. Join
-[the discussion](https://github.com/hasufell/hsfm/issues/12) on how to
-improve them.

HACKING.md

@@ -0,0 +1 @@
+hacking/HACKING.md

README.md

@@ -1,7 +1,8 @@
 HSFM
 ====
 
-__NOTE: This project is in a highly experimental state! Don't complain if it deletes your whole home directory. You should use a chroot, docker environment or similar for testing.__
+[![Join the chat at https://gitter.im/hasufell/hsfm](https://badges.gitter.im/hasufell/hsfm.svg)](https://gitter.im/hasufell/hsfm?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Build Status](https://api.travis-ci.org/hasufell/hsfm.png?branch=master)](https://travis-ci.org/hasufell/hsfm)
 
 A Gtk+:3 filemanager written in Haskell.
 
@@ -12,16 +13,20 @@ Design goals:
 - type safety, runtime safety, strictness
 - simple add-on interface
 
+Screenshots
+-----------
+
+![hsfm](https://cloud.githubusercontent.com/assets/1241845/20034565/6c3ae80e-a3c2-11e6-882c-9fe0ff202045.png "hsfm-gtk")
 
 Installation
 ------------
 
 ```
-cabal install
+./install.sh
 ```
 
 
 Contributing
 ------------
 
-See [HACKING.md](HACKING.md).
+See [HACKING.md](hacking/HACKING.md).

cabal.project

@@ -0,0 +1,10 @@
+with-compiler: ghc-8.6.5
+
+packages: .
+
+optimization: 2
+
+package *
+    optimization: 2
+
+index-state: 2020-01-24T20:23:40Z

cabal.project.freeze

@@ -0,0 +1,80 @@
+constraints: any.Cabal ==2.4.0.1,
+             any.IfElse ==0.85,
+             any.abstract-deque ==0.3,
+             abstract-deque -usecas,
+             any.alex ==3.2.5,
+             alex +small_base,
+             any.array ==0.5.3.0,
+             any.atomic-primops ==0.8.3,
+             atomic-primops -debug,
+             any.base ==4.12.0.0,
+             any.base-orphans ==0.8.1,
+             any.binary ==0.8.6.0,
+             any.bytestring ==0.10.8.2,
+             any.cairo ==0.13.8.0,
+             cairo +cairo_pdf +cairo_ps +cairo_svg,
+             any.containers ==0.6.0.1,
+             any.deepseq ==1.4.4.0,
+             any.directory ==1.3.3.0,
+             any.exceptions ==0.10.4,
+             exceptions +transformers-0-4,
+             any.filepath ==1.4.2.1,
+             any.ghc-boot-th ==8.6.5,
+             any.ghc-prim ==0.5.3,
+             any.gio ==0.13.8.0,
+             any.glib ==0.13.8.0,
+             glib +closure_signals,
+             any.gtk2hs-buildtools ==0.13.8.0,
+             gtk2hs-buildtools +closuresignals,
+             any.gtk3 ==0.15.4,
+             gtk3 -build-demos +fmode-binary +have-gio,
+             any.happy ==1.19.12,
+             happy +small_base,
+             any.hashable ==1.3.0.0,
+             hashable -examples +integer-gmp +sse2 -sse41,
+             any.hashtables ==1.2.3.4,
+             hashtables -bounds-checking -debug -detailed-profiling -portable -sse42 +unsafe-tricks,
+             any.heaps ==0.3.6.1,
+             any.hinotify-bytestring ==0.3.8.1,
+             any.hpath ==0.11.0,
+             any.hpath-filepath ==0.10.3,
+             any.hpath-io ==0.12.0,
+             any.hsc2hs ==0.68.6,
+             hsc2hs -in-ghc-tree,
+             any.integer-gmp ==1.0.2.0,
+             any.lockfree-queue ==0.2.3.1,
+             any.monad-control ==1.0.2.3,
+             any.monad-loops ==0.4.3,
+             monad-loops +base4,
+             any.mtl ==2.2.2,
+             any.network ==3.1.1.1,
+             any.old-locale ==1.0.0.7,
+             any.pango ==0.13.8.0,
+             pango +new-exception,
+             any.parsec ==3.1.13.0,
+             any.pretty ==1.1.3.6,
+             any.primitive ==0.7.0.0,
+             any.process ==1.6.5.0,
+             any.random ==1.1,
+             any.rts ==1.0,
+             any.safe ==0.3.18,
+             any.safe-exceptions ==0.1.7.0,
+             any.simple-sendfile ==0.2.30,
+             simple-sendfile +allow-bsd,
+             any.stm ==2.5.0.0,
+             any.streamly ==0.7.0,
+             streamly -benchmark -debug -dev -examples -examples-sdl -has-llvm -inspection -no-charts -no-fusion -streamk,
+             any.template-haskell ==2.14.0.0,
+             any.text ==1.2.3.1,
+             any.time ==1.8.0.2,
+             any.transformers ==0.5.6.2,
+             any.transformers-base ==0.4.5.2,
+             transformers-base +orphaninstances,
+             any.transformers-compat ==0.6.5,
+             transformers-compat -five +five-three -four +generic-deriving +mtl -three -two,
+             any.unix ==2.7.2.2,
+             any.unix-bytestring ==0.3.7.3,
+             any.utf8-string ==1.0.1.1,
+             any.vector ==0.12.0.3,
+             vector +boundschecks -internalchecks -unsafechecks -wall,
+             any.word8 ==0.1.3

hacking/HACKING.md

@@ -0,0 +1,105 @@
+# HACKING
+
+Check out the [issue tracker](https://github.com/hasufell/hsfm/issues)
+if you don't know yet what you want to hack on.
+
+## Coding style
+
+- match the sorroundings
+- no overcomplicated pointfree style
+- normal indenting 2 whitespaces
+- just make things pretty and readable
+- you can use the provided [hsimport.hs](hsimport.hs)
+
+## Documentation
+
+__Everything__ must be documented. :)
+Don't assume people know what you mean. Type signatures are not sufficient
+documentation.
+
+## Hacking Overview
+
+Only a GTK GUI is currently implemented, the entry point being
+[HSFM.GUI.Gtk](./../src/HSFM/GUI/Gtk.hs). From there it flows down
+to creating a [MyGUI object](./../src/HSFM/GUI/Gtk/Data.hs#L51) in
+[HSFM.GUI.Gtk.MyGUI](./../src/HSFM/GUI/Gtk/MyGUI.hs), which is sort of
+a global object for the whole window. Inside this object are
+theoretically multiple [MyView objects](./../src/HSFM/GUI/Gtk/Data.hs#L101)
+allowed which represent the actual view on the filesystem and related
+widgets, which are constructed in
+[HSFM.GUI.Gtk.MyView](./../src/HSFM/GUI/Gtk/MyView.hs). Both MyGUI and MyView
+are more or less accessible throughout the whole GTK callstack, expclicitly
+passed as parameters.
+
+For adding new GTK widgets with functionality you mostly have to touch the
+following files:
+* [builder.xml](./../data/Gtk/builder.xml): this defines the main GUI widgets which are static, use the [glade editor](http://glade.gnome.org) to add stuff
+* [HSFM.GUI.Gtk.Data](./../src/HSFM/GUI/Gtk/Data.hs): add the widget to e.g. the MyGUI type so we can access it throughout the GTK call stack
+* [HSFM.GUI.Gtk.MyGUI](./../src/HSFM/GUI/Gtk/MyGUI.hs): add initializers for the GUI buttons to be fetched from the GTK builder.xml file
+* [HSFM.GUI.Gtk.Callbacks](./../src/HSFM/GUI/Gtk/Callbacks.hs): define the callbacks and the actual functionality here
+
+## Concepts
+
+### Path safety
+
+Paths are usually represented in haskell libraries as `type FilePath = String`.
+This is bad, because of a number of reasons:
+* encoding issues, since the low-level representation of filepaths is in fact an array of C chars
+* weak typing... we could pass arbitrary invalid/malicious filepaths or other random strings
+* no information about any property at type level (e.g. is it an absolute path?)
+* no filepath constructors that do sanity checks and proper parsing
+* no guarantee whether the filepath is normalised or not or even valid
+
+Because of that, the solution is:
+* use `ByteString` under the hood
+* wrap it inside `Path t` where `t` can be either `Abs` (for absolute), `Rel` (for relative) or `Fn` (for filename)
+* construct filepaths via smart constructors only that reject certain paths (like `.` or `..`) and normalise the path
+
+This leads to the following benefits:
+* we have guarantees about whether a path is absolute or not, which is important for runtime safety in general, predictable behavior and thread safety
+* we don't mess with the filepath representation we get from low-level posix functions, so encoding issues are pretty much out
+* we can reason about filepaths and rely on them to be valid (don't confuse that with "they exist")
+* filepath functions like `(</>)` are now predictable and safe in contrast to the version from the `filepath` package
+
+The [hpath](https://hackage.haskell.org/package/hpath) library does exactly that for us.
+
+The only problem with this approach is that most libraries are still String
+based. Some provide dedicated `Foo.ByteString` modules though, but it
+might be necessary to fork libraries.
+We also need to keep track of the [Abstract FilePath proposal](https://ghc.haskell.org/trac/ghc/wiki/Proposal/AbstractFilePath).
+
+Almost all paths in HSFM are only allowed to be absolute (`Path Abs`), unless
+they are filenames (`Path Fn`) and processed for GUI purposes. This is as
+already mentioned for the purpose of runtime safety, predictability and
+thread safety.
+
+### File IO safety
+
+This is a pretty difficult problem. One thing to ensure safety on IO level
+is simply the strong haskell type system, since we push everything
+into our `File a` type and can then pattern match easily against the different
+types of files.
+
+The only problem with this approach is that we are examining a file at point
+`a` in time, safe the information and then use that information further down
+the call stack at point `b` in time, when the file information in memory
+could already be out of date. There are two approaches to make this less
+sucky:
+* use the hinotify library on GUI level to refresh the view (and the File representation in memory) whenever the contents of a directory changes
+* when we stuff something into the copy buffer, it is not saved as type `File a`, but as `Path Abs`... when the operation is finalized  then the file at the given path is read and the copy/move/whatnot function carried out immediately
+
+In addition, we don't use the `directory` package, which is dangerous
+and broken. Instead, we use the [HPath.IO](https://hackage.haskell.org/package/hpath/docs/HPath-IO.html).
+
+### Exception handling
+
+Exceptions are good. We don't want to wrap everything in Maybe/Either types
+unless we want to handle failure immediately. Otherwise we need to make
+sure that at least at some point IOExceptions are caught and visualized
+to the user. This is often done via e.g. `withErrorDialog` which catches
+`IOException` and [HPathIOException](https://hackage.haskell.org/package/hpath/docs/HPath-IO-Errors.html#t:HPathIOException).
+
+It's also important to clean up stuff like filedescriptors via
+functions like `bracket` directly in our low-level code in case
+something goes wrong.
+

hacking/hsimport.hs

@@ -0,0 +1,53 @@
+import Data.List
+import qualified Language.Haskell.Exts as HS
+import HsImport
+
+main :: IO ()
+main = hsimport $ defaultConfig { prettyPrint = prettyPrint
+                                , findImportPos = findImportPos }
+   where
+      prettyPrint :: HS.ImportDecl -> String
+      prettyPrint (HS.ImportDecl sloc modname qual _ _ mpkg mas mspec) =
+        "import " ++ (ifStr qual "qualified ") ++
+        (maybe "" (\pkg -> " \"" ++ pkg ++ "\" ") mpkg)  ++
+        getMN modname ++ (maybe "" (\name -> " as " ++ getMN name) $ mas) ++
+        specprint mspec
+
+      specprint :: Maybe (Bool, [HS.ImportSpec]) -> String
+      specprint Nothing = ""
+      specprint (Just (False, xs))
+        = "\n  (\n" ++ printImportSpecs xs ++ "  )"
+      specprint (Just (True, xs))
+        = "\n  hiding (\n" ++ printImportSpecs xs ++ "  )"
+
+      printImportSpecs :: [HS.ImportSpec] -> String
+      printImportSpecs ins
+          = let (x:xs) = sort ins
+            in  "    " ++ printSpec x ++ "\n" ++ go xs
+        where
+          go []       = ""
+          go [x']     = "  , " ++ printSpec x' ++ "\n"
+          go (x':xs') = "  , " ++ printSpec x' ++ "\n" ++ go xs'
+          printSpec :: HS.ImportSpec -> String
+          printSpec = HS.prettyPrint
+    
+
+      findImportPos :: HS.ImportDecl -> [HS.ImportDecl] -> Maybe ImportPos
+      findImportPos _         []             = Nothing
+      findImportPos newImport currentImports = Just findPos
+        where
+          lastPos = After . last $ currentImports
+          findPos = let xs = takeWhile (\x -> (getMN $ HS.importModule x)
+                                              <
+                                              (getMN $ HS.importModule newImport)
+                                       )
+                             . sort
+                             $ currentImports
+                    in if null xs then lastPos else After . last $ xs
+
+      ifStr :: Bool -> String -> String
+      ifStr True str = str
+      ifStr False _  = ""
+
+      getMN :: HS.ModuleName -> String
+      getMN (HS.ModuleName name) = name

hsfm.cabal

@@ -6,41 +6,45 @@ license:             GPL-2
 license-file:        LICENSE
 author:              Julian Ospald
 maintainer:          hasufell@hasufell.de
-copyright:           Copyright: (c) 2015 Julian Ospald
+copyright:           Copyright: (c) 2016 Julian Ospald
 homepage:            https://github.com/hasufell/hsfm
 category:            Desktop
 build-type:          Simple
-cabal-version:       >=1.10
+cabal-version:       >=1.22
 
-data-files:          data/Gtk/builder.xml
+data-files:
+                     LICENSE
+                     data/Gtk/builder.xml
                      data/Gtk/icons/error.png
                      data/Gtk/icons/gtk-directory.png
                      data/Gtk/icons/gtk-file.png
                      data/Gtk/icons/hsfm.png
-                     LICENSE
+                     hsfm.cabal
 
 
 library
-  exposed-modules:     Data.DirTree
-                       IO.Utils
-                       IO.File
-                       IO.Error
-                       MyPrelude
+  exposed-modules:
+                       HSFM.FileSystem.FileType
+                       HSFM.FileSystem.UtilTypes
+                       HSFM.History
+                       HSFM.Settings
+                       HSFM.Utils.IO
+                       HSFM.Utils.MyPrelude
 
-  build-depends:       base >= 4.7,
-                       data-default,
-                       bifunctors >= 5,
-                       containers,
-                       directory >= 1.1.0.0 && < 1.2.3.0,
+  build-depends:
+                       IfElse,
+                       base >= 4.8 && < 5,
+                       bytestring,
                        filepath >= 1.3.0.0,
-                       hinotify,
-                       mtl >= 2.2,
-                       old-locale >= 1,
-                       process,
+                       hinotify-bytestring,
+                       hpath >= 0.11.0 ,
+                       hpath-filepath >= 0.10.3,
+                       hpath-io >= 0.12.0,
                        safe,
                        stm,
                        time >= 1.4.2,
-                       unix
+                       unix,
+                       utf8-string
   hs-source-dirs:      src
   default-language:    Haskell2010
   Default-Extensions:  RecordWildCards
@@ -48,38 +52,56 @@ library
                        FlexibleInstances
                        ViewPatterns
   ghc-options:
-    -O2
-    -threaded
-    "-with-rtsopts=-N"
+    -Wall
 
 executable hsfm-gtk
-  main-is:             GUI/Gtk.hs
-  other-modules:       GUI.Gtk.Callbacks
-                       GUI.Gtk.Data
-                       GUI.Gtk.Dialogs
-                       GUI.Gtk.Icons
-                       GUI.Gtk.Utils
-                       MyPrelude
+  main-is:             HSFM/GUI/Gtk.hs
+  other-modules:
+                       Paths_hsfm
+                       HSFM.FileSystem.FileType
+                       HSFM.FileSystem.UtilTypes
+                       HSFM.GUI.Glib.GlibString
+                       HSFM.GUI.Gtk.Callbacks
+                       HSFM.GUI.Gtk.Callbacks.Utils
+                       HSFM.GUI.Gtk.Data
+                       HSFM.GUI.Gtk.Dialogs
+                       HSFM.GUI.Gtk.Errors
+                       HSFM.GUI.Gtk.Icons
+                       HSFM.GUI.Gtk.MyGUI
+                       HSFM.GUI.Gtk.MyView
+                       HSFM.GUI.Gtk.Plugins
+                       HSFM.GUI.Gtk.Settings
+                       HSFM.GUI.Gtk.Utils
+                       HSFM.History
+                       HSFM.Settings
+                       HSFM.Utils.IO
+                       HSFM.Utils.MyPrelude
 
-  build-depends:       hsfm,
-                       base >= 4.7,
+  build-depends:
                        Cabal >= 1.22.0.0,
-                       containers,
-                       data-default,
-                       gtk3 >= 0.14.1,
-                       glib >= 0.13,
-                       bifunctors >= 5,
-                       directory >= 1.1.0.0 && < 1.2.3.0,
+                       IfElse,
+                       base >= 4.8 && < 5,
+                       bytestring,
                        filepath >= 1.3.0.0,
-                       hinotify,
-                       mtl >= 2.2,
+                       glib >= 0.13,
+                       gtk3 >= 0.14.1,
+                       hinotify-bytestring,
+                       hpath >= 0.11.0 ,
+                       hpath-filepath >= 0.10.3,
+                       hpath-io >= 0.12.0,
+                       hsfm,
+                       monad-loops,
                        old-locale >= 1,
                        process,
                        safe,
+                       simple-sendfile,
                        stm,
                        time >= 1.4.2,
                        transformers,
-                       unix
+                       unix,
+                       unix-bytestring,
+                       utf8-string,
+                       word8
   hs-source-dirs:      src
   default-language:    Haskell2010
   Default-Extensions:  RecordWildCards
@@ -87,6 +109,9 @@ executable hsfm-gtk
                        FlexibleInstances
                        ViewPatterns
   ghc-options:
-    -O2
-    -threaded
-    "-with-rtsopts=-N"
+    -Wall
+
+source-repository head
+  type:     git
+  location: https://github.com/hasufell/hsfm
+

install.sh

@@ -0,0 +1,42 @@
+#!/bin/sh
+
+set -eu
+
+SCRIPT_DIR="$(CDPATH="" cd -- "$(dirname -- "$0")" && pwd -P)"
+
+cd "${SCRIPT_DIR}"
+
+# install ghcup
+if ! [ -e "${SCRIPT_DIR}"/.ghcup/bin/ghcup ] ; then
+    mkdir -p "${SCRIPT_DIR}"/.ghcup/bin
+    curl --proto '=https' --tlsv1.2 -sSf https://gitlab.haskell.org/haskell/ghcup/raw/master/ghcup > "${SCRIPT_DIR}"/.ghcup/bin/ghcup
+    chmod +x "${SCRIPT_DIR}"/.ghcup/bin/ghcup
+fi
+
+# set up environment
+export PATH="${SCRIPT_DIR}/.ghcup/bin:$PATH"
+export GHCUP_INSTALL_BASE_PREFIX="${SCRIPT_DIR}"
+
+# get ghc version from cabal.project
+ghc_ver=$(grep with-compiler cabal.project | awk '{print $2}' | sed 's/ghc-//')
+
+# install ghc
+if ! ghcup list -t ghc -c installed -r | grep -q "${ghc_ver}" ; then
+    ghcup install "${ghc_ver}"
+fi
+
+# install cabal-install
+if [ -z "$(ghcup list -t cabal-install -c installed -r)" ] ; then
+    ghcup install-cabal
+fi
+
+[ -e "${SCRIPT_DIR}"/bin ] || mkdir "${SCRIPT_DIR}"/bin
+
+# install binary
+cabal v2-install \
+    --installdir="${SCRIPT_DIR}"/bin \
+    --install-method=copy \
+    --overwrite-policy=always
+
+echo "Binary installed in: ${SCRIPT_DIR}/bin"
+

src/Data/DirTree.hs

@@ -1,813 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
--- |This module provides data types for representing directories/files
--- and related operations on it, mostly internal stuff, not actual IO actions.
---
--- It doesn't allow to represent the whole filesystem, since that's only
--- possible through IO laziness, which introduces too much internal state.
-module Data.DirTree where
-
-
-import Control.Applicative
-  (
-    (<*>)
-  , (<$>)
-  , (<|>)
-  , pure
-  )
-import Control.Arrow
-  (
-    first
-  )
-import Control.Exception
-  (
-    handle
-  )
-import Control.Exception.Base
-  (
-    IOException
-  )
-import Control.Monad.State.Lazy
-  (
-
-  )
-import Data.Default
-import Data.List
-  (
-    delete
-  , foldl'
-  , isPrefixOf
-  , sort
-  , sortBy
-  , (\\)
-  )
-import Data.Maybe
-  (
-    fromMaybe
-  )
-import Data.Ord
-  (
-    comparing
-  )
-import Data.Time.Clock.POSIX
-  (
-    POSIXTime
-  , posixSecondsToUTCTime
-  )
-import Data.Traversable
-  (
-    for
-  )
-import Data.Word
-  (
-    Word64
-  )
-import Safe
-  (
-    atDef
-  , initDef
-  )
-import System.Directory
-  (
-    canonicalizePath
-  )
-import System.FilePath
-  (
-    combine
-  , normalise
-  , equalFilePath
-  , isAbsolute
-  , joinPath
-  , pathSeparator
-  , splitDirectories
-  , takeFileName
-  , (</>)
-  )
-import System.IO
-  (
-    IOMode
-  , Handle
-  , openFile
-  )
-import System.IO.Error
-  (
-    ioeGetErrorType
-  , isDoesNotExistErrorType
-  )
-import System.IO.Unsafe
-  (
-    unsafeInterleaveIO
-  )
-import System.Locale
-  (
-    defaultTimeLocale
-  , rfc822DateFormat
-  )
-import System.Posix.Types
-  (
-    DeviceID
-  , EpochTime
-  , FileID
-  , FileMode
-  , FileOffset
-  , GroupID
-  , LinkCount
-  , UserID
-  )
-
-import qualified Data.Bitraversable as BT
-import qualified Data.Bifunctor     as BF
-import qualified Data.Bifoldable    as BFL
-import qualified Data.Traversable   as T
-import qualified System.Posix.Files as PF
-import qualified System.Posix.Directory as PFD
-
-
-
-
-    ----------------------------
-    --[ BASE TYPES ]--
-    ----------------------------
-
-
--- |Weak type to distinguish between FilePath and FileName.
-type FileName = String
-
-
--- |Represents a file. The `anchor` field is the path
--- to that file without the filename.
-data AnchoredFile a =
-  (:/) { anchor :: FilePath, file :: File a }
-  deriving (Eq, Show)
-
-
--- |The String in the name field is always a file name, never a full path.
--- The free type variable is used in the File/Dir constructor and can hold
--- Handles, Strings representing a file's contents or anything else you can
--- think of. We catch any IO errors in the Failed constructor. an Exception
--- can be converted to a String with 'show'.
-data File a =
-    Failed {
-    name :: FileName
-  , err  :: IOException
-  }
-  | Dir {
-    name :: FileName
-  , fvar :: a
-  }
-  | RegFile {
-    name :: FileName
-  , fvar :: a
-  }
-  | SymLink {
-    name  :: FileName
-  , fvar  :: a
-  , sdest :: AnchoredFile a  -- ^ symlink madness,
-                             --   we need to know where it points to
-  }
-  | BlockDev {
-    name :: FileName
-  , fvar :: a
-  }
-  | CharDev {
-    name :: FileName
-  , fvar :: a
-  }
-  | NamedPipe {
-    name :: FileName
-  , fvar :: a
-  }
-  | Socket {
-    name :: FileName
-  , fvar :: a
-  } deriving (Show, Eq)
-
-
--- |All possible file information we could ever need.
-data FileInfo = FileInfo {
-    deviceID :: DeviceID
-  , fileID :: FileID
-  , fileMode :: FileMode
-  , linkCount :: LinkCount
-  , fileOwner :: UserID
-  , fileGroup :: GroupID
-  , specialDeviceID :: DeviceID
-  , fileSize :: FileOffset
-  , accessTime :: EpochTime
-  , modificationTime :: EpochTime
-  , statusChangeTime :: EpochTime
-  , accessTimeHiRes :: POSIXTime
-  , modificationTimeHiRes :: POSIXTime
-  , statusChangeTimeHiRes :: POSIXTime
-} deriving (Show, Eq, Ord)
-
-
-type UserIO a = FilePath -> IO a
-
-type Builder a = UserIO a -> FilePath -> IO [File a]
-
-
-
-
-    ------------------------------------
-    --[ ViewPatterns/PatternSynonyms ]--
-    ------------------------------------
-
-
-convertViewP :: (File FileInfo -> (Bool, File FileInfo))
-             -> AnchoredFile FileInfo
-             -> (Bool, AnchoredFile FileInfo)
-convertViewP f af@(bp :/ constr) =
-  let (b, file) = f constr
-  in (b, bp :/ file)
-
-
-
-afileLike :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-afileLike f@(bp :/ constr) = convertViewP fileLike f
-
-fileLike :: File FileInfo -> (Bool, File FileInfo)
-fileLike f@(RegFile {})   = (True, f)
-fileLike f@(BlockDev {})  = (True, f)
-fileLike f@(CharDev {})   = (True, f)
-fileLike f@(NamedPipe {}) = (True, f)
-fileLike f@(Socket {})    = (True, f)
-fileLike f                = (False, f)
-
-
-sadir :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-sadir f = convertViewP sdir f
-
-sdir :: File FileInfo -> (Bool, File FileInfo)
-sdir f@(SymLink { sdest = (_ :/ s@(SymLink {}) )})
-  -- we have to follow a chain of symlinks here, but
-  -- return only the very first level
-  = case (sdir s) of
-      (True, _) -> (True, f)
-      _         -> (False, f)
-sdir f@(SymLink { sdest = (_ :/ Dir {} )})
-  = (True, f)
-sdir f@(Dir {}) = (True, f)
-sdir f          = (False, f)
-
-
-safileLike :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-safileLike f = convertViewP sfileLike f
-
-sfileLike :: File FileInfo -> (Bool, File FileInfo)
-sfileLike f@(RegFile {})   = (True, f)
-sfileLike f@(BlockDev {})  = (True, f)
-sfileLike f@(CharDev {})   = (True, f)
-sfileLike f@(NamedPipe {}) = (True, f)
-sfileLike f@(Socket {})    = (True, f)
-sfileLike f                = fileLikeSym f
-
-
-afileLikeSym :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-afileLikeSym f = convertViewP fileLikeSym f
-
-fileLikeSym :: File FileInfo -> (Bool, File FileInfo)
-fileLikeSym f@(SymLink { sdest = (_ :/ s@(SymLink {}) )})
-  = case (fileLikeSym s) of
-      (True, _) -> (True, f)
-      _         -> (False, f)
-fileLikeSym f@(SymLink { sdest = (_ :/ RegFile {} )}) = (True, f)
-fileLikeSym f@(SymLink { sdest = (_ :/ BlockDev {} )}) = (True, f)
-fileLikeSym f@(SymLink { sdest = (_ :/ CharDev {} )}) = (True, f)
-fileLikeSym f@(SymLink { sdest = (_ :/ NamedPipe {} )}) = (True, f)
-fileLikeSym f@(SymLink { sdest = (_ :/ Socket {} )}) = (True, f)
-fileLikeSym f = (False, f)
-
-
-adirSym :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-adirSym f = convertViewP dirSym f
-
-dirSym :: File FileInfo -> (Bool, File FileInfo)
-dirSym f@(SymLink { sdest = (_ :/ s@(SymLink {}) )})
-  = case (dirSym s) of
-      (True, _) -> (True, f)
-      _         -> (False, f)
-dirSym f@(SymLink { sdest = (_ :/ Dir {} )}) = (True, f)
-dirSym f = (False, f)
-
-
-invalidFileName :: FileName -> (Bool, FileName)
-invalidFileName ""   = (True, "")
-invalidFileName "."  = (True, ".")
-invalidFileName ".." = (True, "..")
-invalidFileName fn   = (elem pathSeparator fn, fn)
-
-
-abrokenSymlink :: AnchoredFile FileInfo -> (Bool, AnchoredFile FileInfo)
-abrokenSymlink f = convertViewP brokenSymlink f
-
-brokenSymlink :: File FileInfo -> (Bool, File FileInfo)
-brokenSymlink f = (isBrokenSymlink f, f)
-
-
--- |Matches on invalid filesnames, such as ".", ".." and anything
--- that contains a path separator.
-pattern InvFN   <- (invalidFileName -> (True,_))
--- |Opposite of `InvFN`.
-pattern ValFN f <- (invalidFileName -> (False, f))
-
-
--- |Matches on directories or symlinks pointing to directories.
--- If the symlink is pointing to a symlink pointing to a directory, then
--- it will return True, but also return the first element in the symlink-
--- chain, not the last.
-pattern ADirOrSym f <- (sadir -> (True, f))
-pattern DirOrSym  f <- (sdir  -> (True, f))
-
--- |Matches on symlinks pointing to directories only.
-pattern ADirSym  f <- (adirSym -> (True, f))
-pattern DirSym   f <- (dirSym  -> (True, f))
-
--- |Matches on any non-directory kind of files or symlinks pointing to
--- such.
--- If the symlink is pointing to a symlink pointing to such a file, then
--- it will return True, but also return the first element in the symlink-
--- chain, not the last.
-pattern AFileLikeOrSym f <- (safileLike -> (True, f))
-pattern FileLikeOrSym  f <- (sfileLike  -> (True, f))
-
--- |Matches on any non-directory kind of files, excluding symlinks.
-pattern AFileLike f <- (afileLike -> (True, f))
-pattern FileLike  f <- (fileLike  -> (True, f))
-
--- |Matches on symlinks pointing to file-like files only.
-pattern AFileLikeSym f <- (afileLikeSym -> (True, f))
-pattern FileLikeSym  f <- (fileLikeSym  -> (True, f))
-
--- |Matches on broken symbolic links.
-pattern ABrokenSymlink f <- (abrokenSymlink -> (True, f))
-pattern BrokenSymlink  f <- (brokenSymlink  -> (True, f))
-
-
-
-    -----------------
-    --[ INSTANCES ]--
-    -----------------
-
-
--- | First compare constructors: Failed < Dir < File...
--- Then compare `name`...
--- Then compare free variable parameter of `File` constructors
-instance Ord (File FileInfo) where
-    compare (RegFile n a) (RegFile n' a') =
-        case compare n n' of
-             EQ -> compare a a'
-             el -> el
-    compare (Dir n b) (Dir n' b') =
-        case compare n n' of
-             EQ -> compare b b'
-             el -> el
-     -- after comparing above we can hand off to shape ord function:
-    compare d d' = comparingConstr d d'
-
-
--- |First compare anchor, then compare File.
-instance Ord (AnchoredFile FileInfo) where
-  compare (bp1 :/ a) (bp2 :/ b) =
-    case compare bp1 bp2 of
-      EQ -> compare a b
-      el -> el
-
-
-
-
-
-    ----------------------------
-    --[ HIGH LEVEL FUNCTIONS ]--
-    ----------------------------
-
-
--- |Read a file into an `AnchoredFile`, filling the free variables via
--- the given function.
-readFileWith :: (FilePath -> IO a)
-             -> FilePath
-             -> IO (AnchoredFile a)
-readFileWith ff p = do
-  let fn = topDir p
-      bd = baseDir p
-  handleDT' bd fn $ do
-    fs  <- PF.getSymbolicLinkStatus p
-    fv  <- ff p
-    file <- constructFile fs fv bd fn
-    return (bd :/ file)
-  where
-    constructFile fs fv bd' n
-      | PF.isSymbolicLink    fs = do
-          -- symlink madness, we need to make sure we save the correct
-          -- AnchoredFile
-          let fp = bd' </> n
-          resolvedSyml <- handleDT' bd' n $ do
-            sfp <- (\x -> if isAbsolute x then x else bd' </> x)
-                     <$> PF.readSymbolicLink fp
-            _ <- PF.getFileStatus sfp -- important to break infinite symbolic
-                                      -- link cycle
-            readFileWith ff sfp
-          return $ SymLink n fv resolvedSyml
-      | PF.isDirectory       fs = return $ Dir       n fv
-      | PF.isRegularFile     fs = return $ RegFile   n fv
-      | PF.isBlockDevice     fs = return $ BlockDev  n fv
-      | PF.isCharacterDevice fs = return $ CharDev   n fv
-      | PF.isNamedPipe       fs = return $ NamedPipe n fv
-      | PF.isSocket          fs = return $ Socket    n fv
-      | otherwise               = return $ Failed    n (userError
-                                                        "Unknown filetype!")
-
-
-readFile :: FilePath -> IO (AnchoredFile FileInfo)
-readFile fp = readFileWith getFileInfo $ normalize fp
-
-
--- |Build a list of AnchoredFile, given the path to a directory, filling
--- the free variables via `getFileInfo`. This includes the "." and ".."
--- directories.
-readDirectory :: FilePath -> IO [AnchoredFile FileInfo]
-readDirectory fp = readDirectoryWith getAllDirsFiles getFileInfo
-                     $ normalize fp
-
-
--- |Build a list of AnchoredFile, given the path to a directory, filling
--- the free variables via `getFileInfo`. This excludes the "." and ".."
--- directories.
-readDirectory' :: FilePath -> IO [AnchoredFile FileInfo]
-readDirectory' fp = readDirectoryWith getDirsFiles getFileInfo
-                      $ normalize fp
-
-
--- | same as readDirectory but allows us to, for example, use
--- ByteString.readFile to return a tree of ByteStrings.
-readDirectoryWith :: (FilePath -> IO [FilePath])
-                  -> (FilePath -> IO a)
-                  -> FilePath
-                  -> IO [AnchoredFile a]
-readDirectoryWith getfiles ff p = do
-  contents <- getfiles $ normalize p
-  cs <- mapM (\x -> readFileWith ff $ p </> x) contents
-  return $ removeNonexistent cs
-
-
-
-
-
-    -----------------
-    --[ UTILITIES ]--
-    -----------------
-
-
-
----- HANDLING FAILURES ----
-
-
--- | True if any Failed constructors in the tree
-anyFailed :: [File a] -> Bool
-anyFailed = not . successful
-
--- | True if there are no Failed constructors in the tree
-successful :: [File a] -> Bool
-successful = null . failures
-
-
--- | returns true if argument is a `Failed` constructor:
-failed :: File a -> Bool
-failed (Failed _ _) = True
-failed _            = False
-
-
--- | returns a list of 'Failed' constructors only:
-failures :: [File a] -> [File a]
-failures = filter failed
-
-
-
----- ORDERING AND EQUALITY ----
-
-
- -- HELPER: a non-recursive comparison
-comparingConstr :: File FileInfo -> File FileInfo -> Ordering
-comparingConstr (Failed _ _)      (DirOrSym _)      = LT
-comparingConstr (Failed _ _)      (FileLikeOrSym _) = LT
-comparingConstr (FileLikeOrSym _) (Failed _ _)      = GT
-comparingConstr (FileLikeOrSym _) (DirOrSym _)      = GT
-comparingConstr (DirOrSym _)      (Failed _ _)      = GT
-comparingConstr (DirOrSym _)      (FileLikeOrSym _) = LT
- -- else compare on the names of constructors that are the same, without
- -- looking at the contents of Dir constructors:
-comparingConstr t t'  = compare (name t) (name t')
-
-
-
-
----- OTHER ----
-
-
-
-    ---------------
-    --[ HELPERS ]--
-    ---------------
-
-
----- CONSTRUCTOR IDENTIFIERS ----
-
-isFileC :: File a -> Bool
-isFileC (RegFile _ _) = True
-isFileC _             = False
-
-
-isDirC :: File a -> Bool
-isDirC (Dir _ _) = True
-isDirC _         = False
-
-
-isSymC :: File a -> Bool
-isSymC (SymLink _ _ _) = True
-isSymC _               = False
-
-
-isBlockC :: File a -> Bool
-isBlockC (BlockDev _ _) = True
-isBlockC _              = False
-
-
-isCharC :: File a -> Bool
-isCharC (CharDev _ _) = True
-isCharC _             = False
-
-
-
-isNamedC :: File a -> Bool
-isNamedC (NamedPipe _ _) = True
-isNamedC _               = False
-
-
-isSocketC :: File a -> Bool
-isSocketC (Socket _ _) = True
-isSocketC _            = False
-
-
-
----- PATH CONVERSIONS ----
-
-
-
--- extracting pathnames and base names:
-topDir, baseDir :: FilePath -> FilePath
-topDir = last . splitDirectories
-baseDir = joinPath . init . splitDirectories
-
-
--- |Check whether the given file is a hidden file.
-hiddenFile :: FilePath -> Bool
-hiddenFile "."  = False
-hiddenFile ".." = False
-hiddenFile str
-  | "." `isPrefixOf` str = True
-  | otherwise            = False
-
-
--- |Like `normalise` from System.FilePath but removes occurences of '..'.
--- Note that this sort of misbehaves if the path contains symlink
--- components.
-normalize :: FilePath -> FilePath
-normalize fp =
-  joinPath $ foldl' ff [] (splitDirectories . normalise $ fp)
-  where
-    ff ["/"] ".." = ["/"]
-    ff x ".."     = initDef [] x
-    ff x y        = x ++ [y]
-
-
--- |Like `canonicalizePath` from System.Directory, but preserves the last
--- component if it's a symlink.
-canonicalizePath' :: FilePath -> IO FilePath
-canonicalizePath' fp = do
-  -- TODO: throw fileDoesNotExist error earlier
-  isSymlink <- PF.isSymbolicLink <$> PF.getSymbolicLinkStatus fp
-  if isSymlink
-    then do
-         cbase <- canonicalizePath (baseDir fp)
-         return $ cbase </> topDir fp
-    else canonicalizePath fp
-
-
----- IO HELPERS: ----
-
-
--- |Go up one directory in the filesystem hierarchy.
-goUp :: AnchoredFile FileInfo -> IO (AnchoredFile FileInfo)
-goUp af@("" :/ _) = return af
-goUp    (bp :/ _) = Data.DirTree.readFile bp
-
-
--- |Go up one directory in the filesystem hierarchy.
-goUp' :: FilePath -> IO (AnchoredFile FileInfo)
-goUp' fp = do
-  let cfp = normalize fp
-  Data.DirTree.readFile $ baseDir cfp
-
-
--- |Get the contents of a directory.
-getContents :: AnchoredFile FileInfo
-            -> IO [AnchoredFile FileInfo]
-getContents (ADirOrSym af) = readDirectory (fullPath af)
-getContents _              = return []
-
-
--- |Get all files of a given directory and return them as a List.
--- This includes "." and "..".
-getAllDirsFiles :: FilePath -> IO [FilePath]
-getAllDirsFiles fp = do
-  dirstream <- PFD.openDirStream fp
-  let mdirs :: [FilePath] -> IO [FilePath]
-      mdirs dirs = do
-        dir <- PFD.readDirStream dirstream
-        if dir == ""
-          then return dirs
-          else mdirs (dir : dirs)
-  dirs <- mdirs []
-  PFD.closeDirStream dirstream
-  return dirs
-
-
--- |Get all files of a given directory and return them as a List.
--- This excludes "." and "..".
-getDirsFiles :: FilePath -> IO [FilePath]
-getDirsFiles fp = do
-  dirstream <- PFD.openDirStream fp
-  let mdirs :: [FilePath] -> IO [FilePath]
-      mdirs dirs = do
-        dir <- PFD.readDirStream dirstream
-        if dir == ""
-          then return dirs
-          else mdirs (insert dir dirs)
-  dirs <- mdirs []
-  PFD.closeDirStream dirstream
-  return dirs
-  where
-    insert dir dirs = case dir of
-      "."  -> dirs
-      ".." -> dirs
-      _    -> dir : dirs
-
-
--- |Gets all file information.
-getFileInfo :: FilePath -> IO FileInfo
-getFileInfo fp = do
-  fs <- PF.getSymbolicLinkStatus fp
-  return $ FileInfo
-    (PF.deviceID fs)
-    (PF.fileID fs)
-    (PF.fileMode fs)
-    (PF.linkCount fs)
-    (PF.fileOwner fs)
-    (PF.fileGroup fs)
-    (PF.specialDeviceID fs)
-    (PF.fileSize fs)
-    (PF.accessTime fs)
-    (PF.modificationTime fs)
-    (PF.statusChangeTime fs)
-    (PF.accessTimeHiRes fs)
-    (PF.modificationTimeHiRes fs)
-    (PF.statusChangeTimeHiRes fs)
-
-
--- |Gets the free variable. Returns Nothing if the constructor is of `Failed`.
-getFreeVar :: File a -> Maybe a
-getFreeVar (Dir _  d)       = Just d
-getFreeVar (RegFile _  d)   = Just d
-getFreeVar (SymLink _  d _) = Just d
-getFreeVar (BlockDev _  d)  = Just d
-getFreeVar (CharDev _  d)   = Just d
-getFreeVar (NamedPipe _  d) = Just d
-getFreeVar (Socket _  d)    = Just d
-getFreeVar _                = Nothing
-
-
----- FAILURE HELPERS: ----
-
-
--- handles an IO exception by returning a Failed constructor filled with that
--- exception:
-handleDT :: FileName -> IO (File a) -> IO (File a)
-handleDT n = handle (return . Failed n)
-
-
--- handles an IO exception by returning a Failed constructor filled with that
--- exception:
-handleDT' :: FilePath -> FileName -> IO (AnchoredFile a) -> IO (AnchoredFile a)
-handleDT' bp n = handle (\e -> return $ bp :/ Failed n e)
-
-
--- DoesNotExist errors not present at the topmost level could happen if a
--- named file or directory is deleted after being listed by
--- getDirectoryContents but before we can get it into memory.
---    So we filter those errors out because the user should not see errors
--- raised by the internal implementation of this module:
---     This leaves the error if it exists in the top (user-supplied) level:
-removeNonexistent :: [AnchoredFile a] -> [AnchoredFile a]
-removeNonexistent = filter isOkConstructor
-  where
-    isOkConstructor (_ :/ c) = not (failed c) || isOkError c
-    isOkError = not . isDoesNotExistErrorType . ioeGetErrorType . err
-
-
----- SYMLINK HELPERS: ----
-
-
--- |Follows a chain of symlinks until it finds a non-symlink. Note that
--- this can be caught in an infinite loop if the symlinks haven't been
--- constructed properly. This module however ensures that this cannot
--- happen.
-followSymlink :: File FileInfo -> File FileInfo
-followSymlink (SymLink _ _ (_ :/ b@(SymLink {}))) = followSymlink b
-followSymlink af                                  = af
-
-
--- |Checks if a symlink is broken by examining the constructor of the
--- symlink destination. This also follows the symlink chain.
---
--- When called on a non-symlink, returns False.
-isBrokenSymlink :: File FileInfo -> Bool
-isBrokenSymlink af@(SymLink _ _ (_ :/ Failed {})) = True
-isBrokenSymlink af@(SymLink {})
-  = case followSymlink af of
-      (Failed {}) -> True
-      _           -> False
-isBrokenSymlink _ = False
-
-
----- OTHER: ----
-
-
-
-fullPath :: AnchoredFile a -> FilePath
-fullPath (bp :/ f) = bp </> name f
-
-
--- |Apply a function on the free variable. If there is no free variable
--- for the given constructor the value from the `Default` class is used.
-fromFreeVar :: (Default d) => (a -> d) -> File a -> d
-fromFreeVar f df = maybeD f $ getFreeVar df
-
-
--- |A `maybe` flavor using the `Default` class.
-maybeD :: (Default b) => (a -> b) -> Maybe a -> b
-maybeD = maybe def
-
-
--- |Pack the modification time into a string.
-packModTime :: File FileInfo
-            -> String
-packModTime = fromFreeVar
-                $ show . posixSecondsToUTCTime . realToFrac . modificationTime
-
-
--- |Pack the permissions into a string, similar to what "ls -l" does.
-packPermissions :: File FileInfo
-                -> String
-packPermissions dt = fromFreeVar (pStr . fileMode) dt
-  where
-    pStr ffm = typeModeStr ++ ownerModeStr ++ groupModeStr ++ otherModeStr
-      where
-        typeModeStr
-          | hasFM PF.regularFileMode      = "-"
-          | hasFM PF.directoryMode        = "d"
-          | hasFM PF.symbolicLinkMode     = "l"
-          | hasFM PF.socketMode           = "s"
-          | hasFM PF.blockSpecialMode     = "b"
-          | hasFM PF.characterSpecialMode = "c"
-          | hasFM PF.namedPipeMode        = "p"
-        ownerModeStr =    hasFmStr PF.ownerReadMode    "r"
-                       ++ hasFmStr PF.ownerWriteMode   "w"
-                       ++ hasFmStr PF.ownerExecuteMode "x"
-        groupModeStr =    hasFmStr PF.groupReadMode    "r"
-                       ++ hasFmStr PF.groupWriteMode   "w"
-                       ++ hasFmStr PF.groupExecuteMode "x"
-        otherModeStr =    hasFmStr PF.otherReadMode    "r"
-                       ++ hasFmStr PF.otherWriteMode   "w"
-                       ++ hasFmStr PF.otherExecuteMode "x"
-        hasFmStr fm str
-          | hasFM fm  = str
-          | otherwise = "-"
-        hasFM fm = ffm `PF.intersectFileModes` fm == fm

src/GUI/Gtk.hs

@@ -1,293 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
-module Main where
-
-import Control.Applicative
-  (
-    (<$>)
-  , (<*>)
-  )
-import Control.Concurrent
-  (
-    forkIO
-  )
-import Control.Concurrent.MVar
-  (
-    newEmptyMVar
-  )
-import Control.Concurrent.STM
-  (
-    TVar
-  , newTVarIO
-  , readTVarIO
-  )
-import Control.Exception
-  (
-    try
-  , Exception
-  , SomeException
-  )
-import Control.Monad
-  (
-    when
-  , void
-  )
-import Control.Monad.IO.Class
-  (
-    liftIO
-  )
-import Data.DirTree
-import Data.Foldable
-  (
-    for_
-  )
-import Data.List
-  (
-    sort
-  , isPrefixOf
-  )
-import Data.Maybe
-  (
-    fromJust
-  , catMaybes
-  , fromMaybe
-  )
-import Data.Traversable
-  (
-    forM
-  )
-import Graphics.UI.Gtk
-import GUI.Gtk.Callbacks
-import GUI.Gtk.Data
-import GUI.Gtk.Dialogs
-import GUI.Gtk.Icons
-import GUI.Gtk.Utils
-import IO.Error
-import IO.File
-import IO.Utils
-import MyPrelude
-import Safe
-  (
-    headDef
-  )
-import System.Directory
-  (
-    doesFileExist
-  , doesDirectoryExist
-  )
-import System.Environment
-  (
-    getArgs
-  )
-import System.FilePath
-  (
-    isAbsolute
-  , (</>)
-  )
-import System.Glib.UTFString
-  (
-    glibToString
-  )
-import System.IO.Unsafe
-  (
-    unsafePerformIO
-  )
-import System.Process
-  (
-    spawnProcess
-  )
-
-
--- TODO: simplify where we modify the TVars
--- TODO: double check garbage collection/gtk ref counting
--- TODO: file watching, when and what to reread
-
-
-main :: IO ()
-main = do
-  _ <- initGUI
-
-  args <- getArgs
-
-  startMainWindow (headDef "/" args)
-
-  _ <- mainGUI
-  return ()
-
-
-    -------------------------
-    --[ Main Window Setup ]--
-    -------------------------
-
-
--- |Set up the GUI.
---
--- Interaction with mutable references:
---
--- * 'settings' creates
--- * 'operationBuffer' creates
--- * 'rawModel' creates
--- * 'filteredModel' creates
--- * 'sortedModel' creates
-startMainWindow :: FilePath -> IO ()
-startMainWindow startdir = do
-
-  settings <- newTVarIO (MkFMSettings False True)
-
-  inotify  <- newEmptyMVar
-
-  -- get the icons
-  iT           <- iconThemeGetDefault
-  folderPix    <- getIcon IFolder iT 24
-  folderSymPix <- getSymlinkIcon IFolder iT 24
-  filePix      <- getIcon IFile iT 24
-  fileSymPix   <- getSymlinkIcon IFile iT 24
-  errorPix     <- getIcon IError iT 24
-
-  operationBuffer <- newTVarIO None
-
-  builder <- builderNew
-  builderAddFromFile builder "data/Gtk/builder.xml"
-
-  -- get the pre-defined gui widgets
-  rootWin           <- builderGetObject builder castToWindow
-                       "rootWin"
-  scroll            <- builderGetObject builder castToScrolledWindow
-                       "mainScroll"
-  menubarFileQuit   <- builderGetObject builder castToImageMenuItem
-                       "menubarFileQuit"
-  menubarFileOpen   <- builderGetObject builder castToImageMenuItem
-                       "menubarFileOpen"
-  menubarFileExecute <- builderGetObject builder castToImageMenuItem
-                        "menubarFileExecute"
-  menubarFileNew    <- builderGetObject builder castToImageMenuItem
-                       "menubarFileNew"
-  menubarEditCut    <- builderGetObject builder castToImageMenuItem
-                       "menubarEditCut"
-  menubarEditCopy   <- builderGetObject builder castToImageMenuItem
-                       "menubarEditCopy"
-  menubarEditRename <- builderGetObject builder castToImageMenuItem
-                       "menubarEditRename"
-  menubarEditPaste  <- builderGetObject builder castToImageMenuItem
-                       "menubarEditPaste"
-  menubarEditDelete <- builderGetObject builder castToImageMenuItem
-                      "menubarEditDelete"
-  menubarHelpAbout  <- builderGetObject builder castToImageMenuItem
-                      "menubarHelpAbout"
-  urlBar            <- builderGetObject builder castToEntry
-                       "urlBar"
-  statusBar         <- builderGetObject builder castToStatusbar
-                       "statusBar"
-  rcMenu            <- builderGetObject builder castToMenu
-                       "rcMenu"
-  rcFileOpen        <- builderGetObject builder castToImageMenuItem
-                       "rcFileOpen"
-  rcFileExecute     <- builderGetObject builder castToImageMenuItem
-                       "rcFileExecute"
-  rcFileNew         <- builderGetObject builder castToImageMenuItem
-                       "rcFileNew"
-  rcFileCut         <- builderGetObject builder castToImageMenuItem
-                       "rcFileCut"
-  rcFileCopy        <- builderGetObject builder castToImageMenuItem
-                       "rcFileCopy"
-  rcFileRename      <- builderGetObject builder castToImageMenuItem
-                       "rcFileRename"
-  rcFilePaste       <- builderGetObject builder castToImageMenuItem
-                       "rcFilePaste"
-  rcFileDelete      <- builderGetObject builder castToImageMenuItem
-                       "rcFileDelete"
-  refreshView       <- builderGetObject builder castToButton
-                       "refreshView"
-
-  -- create initial list store model with unsorted data
-  -- we check that the startdir passed by the user is valid
-  -- TODO: maybe move this to a separate function
-  sd <- (\x -> if (failed . file $ x) || (not . isAbsolute . anchor $ x)
-                 then Data.DirTree.readFile "/"
-                 else return x) =<< Data.DirTree.readFile startdir
-  rawModel <- newTVarIO =<< listStoreNew
-                        =<< Data.DirTree.getContents sd
-
-  filteredModel <- newTVarIO =<< (\x -> treeModelFilterNew x [])
-                           =<< readTVarIO rawModel
-
-  -- create an initial sorting proxy model
-  sortedModel <- newTVarIO =<< treeModelSortNewWithModel
-                           =<< readTVarIO filteredModel
-
-  -- create the final view
-  treeView <- treeViewNew
-
-  -- create final tree model columns
-  renderTxt <- cellRendererTextNew
-  renderPix <- cellRendererPixbufNew
-  let ct = cellText   :: (CellRendererTextClass cr) => Attr cr String
-      cp = cellPixbuf :: (CellRendererPixbufClass self) => Attr self Pixbuf
-
-  -- filename column
-  cF <- treeViewColumnNew
-  treeViewColumnSetTitle        cF "Filename"
-  treeViewColumnSetResizable    cF True
-  treeViewColumnSetClickable    cF True
-  treeViewColumnSetSortColumnId cF 1
-  cellLayoutPackStart cF renderPix False
-  cellLayoutPackStart cF renderTxt True
-  _ <- treeViewAppendColumn treeView cF
-  cellLayoutAddColumnAttribute cF renderPix cp $ makeColumnIdPixbuf 0
-  cellLayoutAddColumnAttribute cF renderTxt ct $ makeColumnIdString 1
-
-  -- date column
-  cMD <- treeViewColumnNew
-  treeViewColumnSetTitle        cMD "Date"
-  treeViewColumnSetResizable    cMD True
-  treeViewColumnSetClickable    cMD True
-  treeViewColumnSetSortColumnId cMD 2
-  cellLayoutPackStart cMD renderTxt True
-  _ <- treeViewAppendColumn treeView cMD
-  cellLayoutAddColumnAttribute cMD renderTxt ct $ makeColumnIdString 2
-
-  -- permissions column
-  cP <- treeViewColumnNew
-  treeViewColumnSetTitle        cP "Permission"
-  treeViewColumnSetResizable    cP True
-  treeViewColumnSetClickable    cP True
-  treeViewColumnSetSortColumnId cP 3
-  cellLayoutPackStart cP renderTxt True
-  _ <- treeViewAppendColumn treeView cP
-  cellLayoutAddColumnAttribute cP renderTxt ct $ makeColumnIdString 3
-
-  -- construct the gui object
-  let mygui  = MkMyGUI {..}
-  let myview = MkMyView {..}
-
-  -- create the tree model with its contents
-  constructTreeView mygui myview
-
-  -- set the bindings
-  setCallbacks mygui myview
-
-  -- add the treeview to the scroll container
-  containerAdd scroll treeView
-
-  -- sets the default icon
-  windowSetDefaultIconFromFile "data/Gtk/icons/hsfm.png"
-
-  widgetShowAll rootWin

src/GUI/Gtk/Callbacks.hs

@@ -1,288 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
-module GUI.Gtk.Callbacks where
-
-
-import Control.Applicative
-  (
-    (<$>)
-  , (<*>)
-  )
-import Control.Concurrent.STM
-  (
-    TVar
-  , newTVarIO
-  , readTVarIO
-  )
-import Control.Monad
-  (
-    void
-  )
-import Control.Monad.IO.Class
-  (
-    liftIO
-  )
-import Data.DirTree
-import Data.Foldable
-  (
-    for_
-  )
-import Graphics.UI.Gtk
-import GUI.Gtk.Data
-import GUI.Gtk.Dialogs
-import GUI.Gtk.Utils
-import IO.File
-import IO.Utils
-import System.Directory
-  (
-    doesFileExist
-  , doesDirectoryExist
-  )
-import System.FilePath
-  (
-    isAbsolute
-  , (</>)
-  )
-import System.Glib.UTFString
-  (
-    glibToString
-  )
-
-
-
-
-
-    -----------------
-    --[ Callbacks ]--
-    -----------------
-
-
--- |Set callbacks, on hotkeys, events and stuff.
---
--- Interaction with mutable references:
---
--- * 'settings mygui' modifies
-setCallbacks :: MyGUI -> MyView -> IO ()
-setCallbacks mygui myview = do
-  _ <- rootWin mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "q"       <- fmap glibToString eventKeyName
-    liftIO mainQuit
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "h"       <- fmap glibToString eventKeyName
-    cdir <- liftIO $ getCurrentDir myview
-    liftIO $ modifyTVarIO (settings mygui)
-                          (\x -> x { showHidden = not . showHidden $ x})
-             >> refreshTreeView' mygui myview cdir
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Alt] <- eventModifier
-    "Up"  <- fmap glibToString eventKeyName
-    liftIO $ upDir mygui myview
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    "Delete"  <- fmap glibToString eventKeyName
-    liftIO $ withRow mygui myview del
-  _ <- treeView mygui `on` rowActivated $ (\_ _ -> withRow mygui myview open)
-  _ <- urlBar mygui `on` entryActivated $ urlGoTo mygui myview
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "c"       <- fmap glibToString eventKeyName
-    liftIO $ withRow mygui myview copyInit
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "x"       <- fmap glibToString eventKeyName
-    liftIO $ withRow mygui myview moveInit
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "v"       <- fmap glibToString eventKeyName
-    liftIO $ operationFinal mygui myview
-
-  _ <- refreshView mygui `on` buttonActivated $ do
-       cdir <- liftIO $ getCurrentDir myview
-       refreshTreeView' mygui myview cdir
-
-  -- menubar-file
-  _ <- menubarFileQuit mygui `on` menuItemActivated $ mainQuit
-  _ <- menubarFileOpen mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview open
-  _ <- menubarFileExecute mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview execute
-  _ <- menubarFileNew mygui `on` menuItemActivated $
-    liftIO $ newFile mygui myview
-
-  -- menubar-edit
-  _ <- menubarEditCut mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview moveInit
-  _ <- menubarEditCopy mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview copyInit
-  _ <- menubarEditRename mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview renameF
-  _ <- menubarEditPaste mygui `on` menuItemActivated $
-    liftIO $ operationFinal mygui myview
-  _ <- menubarEditDelete mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview del
-
-  -- menubar-help
-  _ <- menubarHelpAbout mygui `on` menuItemActivated $
-    liftIO showAboutDialog
-
-  -- righ-click
-  _ <- treeView mygui `on` buttonPressEvent $ do
-    eb <- eventButton
-    t  <- eventTime
-    case eb of
-      RightButton -> liftIO $ menuPopup (rcMenu mygui) $ Just (RightButton, t)
-      _           -> return ()
-    return False
-  _ <- rcFileOpen mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview open
-  _ <- rcFileExecute mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview execute
-  _ <- rcFileNew mygui `on` menuItemActivated $
-    liftIO $ newFile mygui myview
-  _ <- rcFileCopy mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview copyInit
-  _ <- rcFileRename mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview renameF
-  _ <- rcFilePaste mygui `on` menuItemActivated $
-    liftIO $ operationFinal mygui myview
-  _ <- rcFileDelete mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview del
-  _ <- rcFileCut mygui `on` menuItemActivated $
-    liftIO $ withRow mygui myview moveInit
-
-
-  return ()
-
-
--- |Go to the url given at the 'urlBar' and visualize it in the given
--- treeView.
-urlGoTo :: MyGUI -> MyView -> IO ()
-urlGoTo mygui myview = withErrorDialog $ do
-  fp <- entryGetText (urlBar mygui)
-  let abs = isAbsolute fp
-  exists <- (||) <$> doesDirectoryExist fp <*> doesFileExist fp
-  -- TODO: more explicit error handling?
-  refreshTreeView mygui myview (Just fp)
-
-
--- |Supposed to be used with 'withRow'. Opens a file or directory.
-open :: Row -> MyGUI -> MyView -> IO ()
-open row mygui myview = withErrorDialog $
-  case row of
-    ADirOrSym r -> do
-      nv <- Data.DirTree.readFile $ fullPath r
-      refreshTreeView' mygui myview nv
-    r ->
-      void $ openFile r
-
-
--- |Execute a given file.
-execute :: Row -> MyGUI -> MyView -> IO ()
-execute row mygui myview = withErrorDialog $
-  void $ executeFile row []
-
-
--- |Supposed to be used with 'withRow'. Deletes a file or directory.
-del :: Row -> MyGUI -> MyView -> IO ()
-del row mygui myview = withErrorDialog $ do
-  let cmsg  = "Really delete \"" ++ fullPath row ++ "\"?"
-  withConfirmationDialog cmsg
-    $ easyDelete row
-
-
--- |Initializes a file move operation.
---
--- Interaction with mutable references:
---
--- * 'operationBuffer' writes
-moveInit :: Row -> MyGUI -> MyView -> IO ()
-moveInit row mygui myview =
-  writeTVarIO (operationBuffer myview) (FMove . MP1 $ row)
-
-
--- |Supposed to be used with 'withRow'. Initializes a file copy operation.
---
--- Interaction with mutable references:
---
--- * 'operationBuffer' writes
-copyInit :: Row -> MyGUI -> MyView -> IO ()
-copyInit row mygui myview =
-  writeTVarIO (operationBuffer myview) (FCopy . CP1 $ row)
-
-
--- |Finalizes a file operation, such as copy or move.
---
--- Interaction with mutable references:
---
--- * 'operationBuffer' reads
-operationFinal :: MyGUI -> MyView -> IO ()
-operationFinal mygui myview = withErrorDialog $ do
-  op <- readTVarIO (operationBuffer myview)
-  cdir <- getCurrentDir myview
-  case op of
-    FMove (MP1 s) -> do
-      let cmsg = "Really move \"" ++ fullPath s
-                  ++ "\"" ++ " to \"" ++ fullPath cdir ++ "\"?"
-      withConfirmationDialog cmsg
-        $ void $ runFileOp (FMove . MC s $ cdir)
-      return ()
-    FCopy (CP1 s) -> do
-      let cmsg = "Really copy \"" ++ fullPath s
-                 ++ "\"" ++ " to \"" ++ fullPath cdir ++ "\"?"
-      cm <- showCopyModeChooserDialog
-      withConfirmationDialog cmsg
-        $ void $ runFileOp (FCopy . CC s cdir $ cm)
-      return ()
-    _ -> return ()
-
-
--- |Go up one directory and visualize it in the treeView.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
--- * 'sortedModel' reads
-upDir :: MyGUI -> MyView -> IO ()
-upDir mygui myview = withErrorDialog $ do
-  cdir <- getCurrentDir myview
-  rawModel'    <- readTVarIO $ rawModel myview
-  sortedModel' <- readTVarIO $ sortedModel myview
-  nv <- goUp cdir
-  refreshTreeView' mygui myview nv
-
-
--- |Go up one directory and visualize it in the treeView.
-newFile :: MyGUI -> MyView -> IO ()
-newFile mygui myview = withErrorDialog $ do
-  mfn   <- textInputDialog "Enter file name"
-  for_ mfn $ \fn -> do
-    cdir  <- getCurrentDir myview
-    createFile cdir fn
-
-
-renameF :: Row -> MyGUI -> MyView -> IO ()
-renameF row mygui myview = withErrorDialog $ do
-  mfn   <- textInputDialog "Enter new file name"
-  for_ mfn $ \fn -> do
-    let cmsg = "Really rename \"" ++ fullPath row
-               ++ "\"" ++ " to \"" ++ anchor row </> fn ++ "\"?"
-    withConfirmationDialog cmsg $ IO.File.renameFile row fn

src/GUI/Gtk/Data.hs

@@ -1,111 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
-module GUI.Gtk.Data where
-
-
-import Control.Concurrent.MVar
-  (
-    MVar
-  )
-import Control.Concurrent.STM
-  (
-    TVar
-  )
-import Data.DirTree
-import Graphics.UI.Gtk
-import IO.File
-import System.INotify
-  (
-    INotify
-  )
-
-
-
-    ------------------
-    --[ Base Types ]--
-    ------------------
-
-
--- |Monolithic object passed to various GUI functions in order
--- to keep the API stable and not alter the parameters too much.
--- This only holds GUI widgets that are needed to be read during
--- runtime.
-data MyGUI = MkMyGUI {
-  -- |main Window
-    rootWin  :: Window
-  , menubarFileQuit :: ImageMenuItem
-  , menubarFileOpen :: ImageMenuItem
-  , menubarFileExecute :: ImageMenuItem
-  , menubarFileNew :: ImageMenuItem
-  , menubarEditCut :: ImageMenuItem
-  , menubarEditCopy :: ImageMenuItem
-  , menubarEditRename :: ImageMenuItem
-  , menubarEditPaste :: ImageMenuItem
-  , menubarEditDelete :: ImageMenuItem
-  , menubarHelpAbout :: ImageMenuItem
-  , rcMenu :: Menu
-  , rcFileOpen :: ImageMenuItem
-  , rcFileExecute :: ImageMenuItem
-  , rcFileNew :: ImageMenuItem
-  , rcFileCut :: ImageMenuItem
-  , rcFileCopy :: ImageMenuItem
-  , rcFileRename :: ImageMenuItem
-  , rcFilePaste :: ImageMenuItem
-  , rcFileDelete :: ImageMenuItem
-  , refreshView :: Button
-  , urlBar :: Entry
-  , statusBar :: Statusbar
-  , treeView :: TreeView
-  -- |first column
-  , cF :: TreeViewColumn
-  -- |second column
-  , cMD :: TreeViewColumn
-  , renderTxt :: CellRendererText
-  , renderPix :: CellRendererPixbuf
-  , settings :: TVar FMSettings
-  , folderPix :: Pixbuf
-  , folderSymPix :: Pixbuf
-  , filePix :: Pixbuf
-  , fileSymPix :: Pixbuf
-  , errorPix :: Pixbuf
-}
-
-
--- |FM-wide settings.
-data FMSettings = MkFMSettings {
-    showHidden :: Bool
-  , isLazy :: Bool
-}
-
-
-type Row = AnchoredFile FileInfo
-
-
--- |This describes the contents of the treeView and is separated from MyGUI,
--- because we might want to have multiple views.
-data MyView = MkMyView {
-    rawModel :: TVar (ListStore Row)
-  , sortedModel :: TVar (TypedTreeModelSort Row)
-  , filteredModel :: TVar (TypedTreeModelFilter Row)
-  , operationBuffer :: TVar FileOperation
-  , inotify :: MVar INotify
-}
-

src/GUI/Gtk/Dialogs.hs

@@ -1,183 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
-module GUI.Gtk.Dialogs where
-
-
-import Control.Applicative
-  (
-    (<$>)
-  )
-import Control.Exception
-  (
-    try
-  , SomeException
-  )
-import Control.Monad
-  (
-    when
-  , void
-  )
-import Data.Version
-  (
-    showVersion
-  )
-import Distribution.Package
-  (
-    PackageIdentifier(..)
-  , PackageName(..)
-  )
-import Distribution.PackageDescription
-  (
-    GenericPackageDescription(..)
-  , PackageDescription(..)
-  )
-import Distribution.PackageDescription.Parse
-  (
-    readPackageDescription
-  )
-import Distribution.Verbosity
-  (
-    silent
-  )
-import Graphics.UI.Gtk
-import GUI.Gtk.Data
-import IO.File
-
-
-
-
-
-    ---------------------
-    --[ Dialog popups ]--
-    ---------------------
-
-
--- |Pops up an error Dialog with the given String.
-showErrorDialog :: String -> IO ()
-showErrorDialog str = do
-  errorDialog <- messageDialogNew Nothing
-                                  [DialogDestroyWithParent]
-                                  MessageError
-                                  ButtonsClose
-                                  str
-  _ <- dialogRun errorDialog
-  widgetDestroy errorDialog
-
-
--- |Asks the user for confirmation and returns True/False.
-showConfirmationDialog :: String -> IO Bool
-showConfirmationDialog str = do
-  confirmDialog <- messageDialogNew Nothing
-                                    [DialogDestroyWithParent]
-                                    MessageQuestion
-                                    ButtonsYesNo
-                                    str
-  rID <- dialogRun confirmDialog
-  widgetDestroy confirmDialog
-  case rID of
-    ResponseYes -> return True
-    ResponseNo  -> return False
-    _           -> return False
-
-
--- |Asks the user which directory copy mode he wants via dialog popup
--- and returns 'DirCopyMode'.
-showCopyModeChooserDialog :: IO DirCopyMode
-showCopyModeChooserDialog = do
-  chooserDialog <- messageDialogNew Nothing
-                                    [DialogDestroyWithParent]
-                                    MessageQuestion
-                                    ButtonsNone
-                                    "Choose the copy mode"
-  dialogAddButton chooserDialog "Strict"  (ResponseUser 0)
-  dialogAddButton chooserDialog "Merge"   (ResponseUser 1)
-  dialogAddButton chooserDialog "Replace" (ResponseUser 2)
-  rID <- dialogRun chooserDialog
-  widgetDestroy chooserDialog
-  case rID of
-    ResponseUser 0 -> return Strict
-    ResponseUser 1 -> return Merge
-    ResponseUser 2 -> return Replace
-
-
--- |Shows the about dialog from the help menu.
-showAboutDialog :: IO ()
-showAboutDialog = do
-  ad       <- aboutDialogNew
-  lstr     <- readFile "LICENSE"
-  hsfmicon <- pixbufNewFromFile "data/Gtk/icons/hsfm.png"
-  pdesc    <- packageDescription <$> readPackageDescription silent "hsfm.cabal"
-  set ad
-    [ aboutDialogProgramName  := (unPackageName . pkgName . package) pdesc
-    , aboutDialogName         := (unPackageName . pkgName . package) pdesc
-    , aboutDialogVersion      := (showVersion . pkgVersion . package) pdesc
-    , aboutDialogCopyright    := copyright pdesc
-    , aboutDialogComments     := description pdesc
-    , aboutDialogLicense      := Just lstr
-    , aboutDialogWebsite      := homepage pdesc
-    , aboutDialogAuthors      := [author pdesc]
-    , aboutDialogLogo         := Just hsfmicon
-    , aboutDialogWrapLicense  := True
-    ]
-  _ <- dialogRun ad
-  widgetDestroy ad
-
-
--- |Carry out an IO action with a confirmation dialog.
--- If the user presses "No", then do nothing.
-withConfirmationDialog :: String -> IO () -> IO ()
-withConfirmationDialog str io = do
-  run <- showConfirmationDialog str
-  when run io
-
-
--- |Execute the given IO action. If the action throws exceptions,
--- visualize them via 'showErrorDialog'.
-withErrorDialog :: IO a -> IO ()
-withErrorDialog io = do
-  r <- try io
-  either (\e -> showErrorDialog $ show (e :: SomeException))
-         (\_ -> return ())
-         r
-
-
--- |Asks the user which directory copy mode he wants via dialog popup
--- and returns 'DirCopyMode'.
-textInputDialog :: String -> IO (Maybe String)
-textInputDialog title = do
-  chooserDialog <- messageDialogNew Nothing
-                                    [DialogDestroyWithParent]
-                                    MessageQuestion
-                                    ButtonsNone
-                                    title
-  entry <- entryNew
-  cbox <- dialogGetActionArea chooserDialog
-  dialogAddButton chooserDialog "Ok"     (ResponseUser 0)
-  dialogAddButton chooserDialog "Cancel" (ResponseUser 1)
-  boxPackStart (castToBox cbox) entry PackNatural 5
-  widgetShowAll chooserDialog
-  rID <- dialogRun chooserDialog
-  ret <- case rID of
-           -- TODO: make this more safe
-           ResponseUser 0 -> Just <$> entryGetText entry
-           ResponseUser 1 -> return Nothing
-  widgetDestroy chooserDialog
-  return ret

src/GUI/Gtk/Utils.hs

@@ -1,294 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
-module GUI.Gtk.Utils where
-
-
-import Control.Applicative
-  (
-    (<$>)
-  )
-import Control.Concurrent.MVar
-  (
-    putMVar
-  , tryTakeMVar
-  )
-import Control.Concurrent.STM
-  (
-    TVar
-  , newTVarIO
-  , readTVarIO
-  )
-import Data.DirTree
-import Data.Foldable
-  (
-    for_
-  )
-import Data.List
-  (
-    isPrefixOf
-  )
-import Data.Maybe
-  (
-    fromMaybe
-  , fromJust
-  )
-import Data.Traversable
-  (
-    forM
-  )
-import Graphics.UI.Gtk
-import GUI.Gtk.Data
-import IO.Error
-import IO.Utils
-import MyPrelude
-import System.INotify
-  (
-    addWatch
-  , initINotify
-  , killINotify
-  , EventVariety(..)
-  , Event(..)
-  )
-
-
-
-
-    -----------------
-    --[ Utilities ]--
-    -----------------
-
-
--- |Gets the currently selected row of the treeView, if any.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
--- * 'sortedModel' reads
--- * 'filteredModel' reads
-getSelectedRow :: MyGUI
-               -> MyView
-               -> IO (Maybe Row)
-getSelectedRow mygui myview = do
-  (tp, _)        <- treeViewGetCursor $ treeView mygui
-  rawModel'      <- readTVarIO $ rawModel myview
-  sortedModel'   <- readTVarIO $ sortedModel myview
-  filteredModel' <- readTVarIO $ filteredModel myview
-  miter          <- treeModelGetIter sortedModel' tp
-  forM miter $ \iter -> do
-    cIter' <- treeModelSortConvertIterToChildIter sortedModel' iter
-    cIter  <- treeModelFilterConvertIterToChildIter filteredModel' cIter'
-    treeModelGetRow rawModel' cIter
-
-
--- |Carry out an action on the currently selected row.
---
--- If there is no row selected, does nothing.
-withRow :: MyGUI
-        -> MyView
-        -> (   Row
-            -> MyGUI
-            -> MyView
-            -> IO ()) -- ^ action to carry out
-        -> IO ()
-withRow mygui myview io = do
-  mrow <- getSelectedRow mygui myview
-  for_ mrow $ \row -> io row mygui myview
-
-
--- |Create the 'ListStore' of files/directories from the current directory.
--- This is the function which maps the Data.DirTree data structures
--- into the GTK+ data structures.
-fileListStore :: AnchoredFile FileInfo  -- ^ current dir
-              -> MyView
-              -> IO (ListStore Row)
-fileListStore dt myview = do
-  cs <- Data.DirTree.getContents dt
-  listStoreNew cs
-
-
--- |Currently unsafe. This is used to obtain any row (possibly the '.' row)
--- and extract the "current working directory" from it.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
-getFirstRow :: MyView
-            -> IO (AnchoredFile FileInfo)
-getFirstRow myview = do
-  rawModel' <- readTVarIO $ rawModel myview
-  iter      <- fromJust <$> treeModelGetIterFirst rawModel'
-  treeModelGetRow rawModel' iter
-
-
--- |Currently unsafe. Gets the current directory via `getFirstRow` and `goUp`.
-getCurrentDir :: MyView
-              -> IO (AnchoredFile FileInfo)
-getCurrentDir myview = getFirstRow myview >>= goUp
-
-
--- |Re-reads the current directory or the given one and updates the TreeView.
---
--- The operation may fail with:
---
--- * 'DirDoesNotExist' if the target directory does not exist
--- * 'PathNotAbsolute' if the target directory is not absolute
---
--- Interaction with mutable references:
---
--- * 'rawModel' writes
-refreshTreeView :: MyGUI
-                -> MyView
-                -> Maybe FilePath
-                -> IO ()
-refreshTreeView mygui myview mfp = do
-  mcdir <- getFirstRow myview
-  let fp  = fromMaybe (anchor mcdir) mfp
-
-  -- get selected rows
-  tvs   <- treeViewGetSelection (treeView mygui)
-  srows <- treeSelectionGetSelectedRows tvs
-
-  -- TODO catch exceptions
-  dirSanityThrow fp
-
-  newFsState  <- Data.DirTree.readFile fp
-  newRawModel <- fileListStore newFsState myview
-  writeTVarIO (rawModel myview) newRawModel
-
-  constructTreeView mygui myview
-
-  -- reselect selected rows
-  mapM_ (treeSelectionSelectPath tvs) srows
-
-
--- |Refreshes the TreeView based on the given directory.
---
--- Interaction with mutable references:
---
--- * 'rawModel' writes
-refreshTreeView' :: MyGUI
-                 -> MyView
-                 -> AnchoredFile FileInfo
-                 -> IO ()
-refreshTreeView' mygui myview dt = do
-  newRawModel  <- fileListStore dt myview
-  writeTVarIO (rawModel myview) newRawModel
-
-  -- get selected rows
-  tvs   <- treeViewGetSelection (treeView mygui)
-  srows <- treeSelectionGetSelectedRows tvs
-
-  constructTreeView mygui myview
-
-  -- reselect selected rows
-  mapM_ (treeSelectionSelectPath tvs) srows
-
-
--- TODO: make this function more slim so only the most necessary parts are
--- called
--- |Constructs the visible TreeView with the current underlying mutable models,
--- which are retrieved from 'MyGUI'.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
--- * 'filteredModel' writes
--- * 'sortedModel' writes
--- * 'settings' reads
-constructTreeView :: MyGUI
-                  -> MyView
-                  -> IO ()
-constructTreeView mygui myview = do
-  let treeView' = treeView mygui
-      cF'       = cF mygui
-      cMD'      = cMD mygui
-      render'   = renderTxt mygui
-
-  cdirp <- anchor <$> getFirstRow myview
-
-  -- update urlBar
-  entrySetText (urlBar mygui) cdirp
-
-  rawModel' <- readTVarIO $ rawModel myview
-
-  -- filtering
-  filteredModel' <- treeModelFilterNew rawModel' []
-  writeTVarIO (filteredModel myview) filteredModel'
-  treeModelFilterSetVisibleFunc filteredModel' $ \iter -> do
-     hidden <- showHidden <$> readTVarIO (settings mygui)
-     row    <- (name . file) <$> treeModelGetRow rawModel' iter
-     if hidden
-       then return True
-       else return $ not . hiddenFile $ row
-
-  -- sorting
-  sortedModel' <- treeModelSortNewWithModel filteredModel'
-  writeTVarIO (sortedModel myview) sortedModel'
-  treeSortableSetSortFunc sortedModel' 1 $ \iter1 iter2 -> do
-      cIter1 <- treeModelFilterConvertIterToChildIter filteredModel' iter1
-      cIter2 <- treeModelFilterConvertIterToChildIter filteredModel' iter2
-      row1   <- treeModelGetRow rawModel' cIter1
-      row2   <- treeModelGetRow rawModel' cIter2
-      return $ compare row1 row2
-  treeSortableSetSortColumnId sortedModel' 1 SortAscending
-
-  -- set values
-  treeModelSetColumn rawModel' (makeColumnIdPixbuf 0)
-                     (dirtreePix . file)
-  treeModelSetColumn rawModel' (makeColumnIdString 1)
-                     (name . file)
-  treeModelSetColumn rawModel' (makeColumnIdString 2)
-                     (packModTime . file)
-  treeModelSetColumn rawModel' (makeColumnIdString 3)
-                     (packPermissions . file)
-
-  -- update treeview model
-  treeViewSetModel treeView' sortedModel'
-
-  -- add watcher
-  mi <- tryTakeMVar (inotify myview)
-  for_ mi $ \i -> killINotify i
-  newi <- initINotify
-  w <- addWatch
-         newi
-         [Move, MoveIn, MoveOut, MoveSelf, Create, Delete, DeleteSelf]
-         cdirp
-         (\_ -> postGUIAsync $ refreshTreeView mygui myview (Just cdirp))
-  putMVar (inotify myview) newi
-
-  return ()
-  where
-    dirtreePix (Dir {})          = folderPix mygui
-    dirtreePix (FileLike {})     = filePix mygui
-    dirtreePix (DirSym _)        = folderSymPix mygui
-    dirtreePix (FileLikeSym {})  = fileSymPix mygui
-    dirtreePix (Failed {})       = errorPix mygui
-    dirtreePix (BrokenSymlink _) = errorPix mygui
-    dirtreePix _                 = errorPix mygui
-
-
--- |Push a message to the status bar.
-pushStatusBar :: MyGUI -> String -> IO (ContextId, MessageId)
-pushStatusBar mygui str = do
-  let sb = statusBar mygui
-  cid <- statusbarGetContextId sb "FM Status"
-  mid <- statusbarPush sb cid str
-  return (cid, mid)

src/HSFM/FileSystem/FileType.hs

@@ -0,0 +1,550 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+
+-- |This module provides a data type for representing directories/files
+-- in a well-typed and convenient way. This is useful to gather and
+-- save information about a file, so the information can be easily
+-- processed in e.g. a GUI.
+--
+-- However, it's not meant to be used to interact with low-level
+-- functions that copy files etc, since there's no guarantee that
+-- the in-memory representation of the type still matches what is
+-- happening on filesystem level.
+--
+-- If you interact with low-level libraries, you must not pattern
+-- match on the `File a` type. Instead, you should only use the saved
+-- `path` and make no assumptions about the file the path might or
+-- might not point to.
+module HSFM.FileSystem.FileType where
+
+
+
+import Data.ByteString(ByteString)
+import Data.ByteString.UTF8
+  (
+    toString
+  )
+import Data.Time.Clock.POSIX
+  (
+    POSIXTime
+  , posixSecondsToUTCTime
+  )
+import Data.Time()
+import HPath
+  (
+    Abs
+  , Path
+  )
+import qualified HPath as P
+import HPath.IO hiding (FileType(..))
+import HPath.IO.Errors
+import Prelude hiding(readFile)
+import System.Posix.FilePath
+  (
+    (</>)
+  )
+import System.Posix.Directory.Traversals
+  (
+    realpath
+  )
+import qualified System.Posix.Files.ByteString as PF
+import System.Posix.Types
+  (
+    DeviceID
+  , EpochTime
+  , FileID
+  , FileMode
+  , FileOffset
+  , GroupID
+  , LinkCount
+  , UserID
+  )
+
+
+
+
+
+
+    ----------------------------
+    --[ BASE TYPES ]--
+    ----------------------------
+
+
+-- |The String in the path field is always a full path.
+-- The free type variable is used in the File/Dir constructor and can hold
+-- Handles, Strings representing a file's contents or anything else you can
+-- think of.
+data File a =
+  Dir {
+    path :: !(Path Abs)
+  , fvar :: a
+  }
+  | RegFile {
+    path :: !(Path Abs)
+  , fvar :: a
+  }
+  | SymLink {
+    path    :: !(Path Abs)
+  , fvar    :: a
+  , sdest   :: Maybe (File a)  -- ^ symlink madness,
+                               --   we need to know where it points to
+  , rawdest :: !ByteString
+  }
+  | BlockDev {
+    path :: !(Path Abs)
+  , fvar :: a
+  }
+  | CharDev {
+    path :: !(Path Abs)
+  , fvar :: a
+  }
+  | NamedPipe {
+    path :: !(Path Abs)
+  , fvar :: a
+  }
+  | Socket {
+    path :: !(Path Abs)
+  , fvar :: a
+  } deriving (Show, Eq)
+
+
+-- |Low-level file information.
+data FileInfo = FileInfo {
+    deviceID              :: !DeviceID
+  , fileID                :: !FileID
+  , fileMode              :: !FileMode
+  , linkCount             :: !LinkCount
+  , fileOwner             :: !UserID
+  , fileGroup             :: !GroupID
+  , specialDeviceID       :: !DeviceID
+  , fileSize              :: !FileOffset
+  , accessTime            :: !EpochTime
+  , modificationTime      :: !EpochTime
+  , statusChangeTime      :: !EpochTime
+  , accessTimeHiRes       :: !POSIXTime
+  , modificationTimeHiRes :: !POSIXTime
+  , statusChangeTimeHiRes :: !POSIXTime
+} deriving (Show, Eq, Ord)
+
+
+
+
+    ------------------------------------
+    --[ ViewPatterns/PatternSynonyms ]--
+    ------------------------------------
+
+
+
+
+---- Filetypes ----
+
+
+sfileLike :: File FileInfo -> (Bool, File FileInfo)
+sfileLike f@RegFile{}   = (True, f)
+sfileLike f@BlockDev{}  = (True, f)
+sfileLike f@CharDev{}   = (True, f)
+sfileLike f@NamedPipe{} = (True, f)
+sfileLike f@Socket{}    = (True, f)
+sfileLike f             = fileLikeSym f
+
+
+fileLike :: File FileInfo -> (Bool, File FileInfo)
+fileLike f@RegFile {}  = (True, f)
+fileLike f@BlockDev{}  = (True, f)
+fileLike f@CharDev{}   = (True, f)
+fileLike f@NamedPipe{} = (True, f)
+fileLike f@Socket{}    = (True, f)
+fileLike f             = (False, f)
+
+
+sdir :: File FileInfo -> (Bool, File FileInfo)
+sdir f@SymLink{ sdest = (Just s@SymLink{} )}
+  -- we have to follow a chain of symlinks here, but
+  -- return only the very first level
+  -- TODO: this is probably obsolete now
+  = case sdir s of
+      (True, _) -> (True, f)
+      _         -> (False, f)
+sdir f@SymLink{ sdest = Just Dir{} }
+  = (True, f)
+sdir f@Dir{} = (True, f)
+sdir f       = (False, f)
+
+
+-- |Matches on any non-directory kind of files, excluding symlinks.
+pattern FileLike :: File FileInfo -> File FileInfo
+pattern FileLike  f <- (fileLike  -> (True, f))
+
+-- |Matches a list of directories or symlinks pointing to directories.
+pattern DirList :: [File FileInfo] -> [File FileInfo]
+pattern DirList fs <- (\fs -> (and . fmap (fst . sdir) $ fs, fs)
+                                -> (True, fs))
+
+-- |Matches a list of any non-directory kind of files or symlinks
+-- pointing to such.
+pattern FileLikeList :: [File FileInfo] -> [File FileInfo]
+pattern FileLikeList fs <- (\fs -> (and
+                                     . fmap (fst . sfileLike)
+                                     $ fs, fs) -> (True, fs))
+
+
+
+---- Symlinks ----
+
+
+brokenSymlink :: File FileInfo -> (Bool, File FileInfo)
+brokenSymlink f = (isBrokenSymlink f, f)
+
+
+fileLikeSym :: File FileInfo -> (Bool, File FileInfo)
+fileLikeSym f@SymLink{ sdest = Just s@SymLink{} }
+  = case fileLikeSym s of
+      (True, _) -> (True, f)
+      _         -> (False, f)
+fileLikeSym f@SymLink{ sdest = Just RegFile{} }   = (True, f)
+fileLikeSym f@SymLink{ sdest = Just BlockDev{} }  = (True, f)
+fileLikeSym f@SymLink{ sdest = Just CharDev{} }   = (True, f)
+fileLikeSym f@SymLink{ sdest = Just NamedPipe{} } = (True, f)
+fileLikeSym f@SymLink{ sdest = Just Socket{} }    = (True, f)
+fileLikeSym f                                = (False, f)
+
+
+dirSym :: File FileInfo -> (Bool, File FileInfo)
+dirSym f@SymLink{ sdest = Just s@SymLink{} }
+  = case dirSym s of
+      (True, _) -> (True, f)
+      _         -> (False, f)
+dirSym f@SymLink{ sdest = Just Dir{} } = (True, f)
+dirSym f = (False, f)
+
+
+-- |Matches on symlinks pointing to file-like files only.
+pattern FileLikeSym :: File FileInfo -> File FileInfo
+pattern FileLikeSym  f <- (fileLikeSym  -> (True, f))
+
+-- |Matches on broken symbolic links.
+pattern BrokenSymlink :: File FileInfo -> File FileInfo
+pattern BrokenSymlink  f <- (brokenSymlink  -> (True, f))
+
+
+-- |Matches on directories or symlinks pointing to directories.
+-- If the symlink is pointing to a symlink pointing to a directory, then
+-- it will return True, but also return the first element in the symlink-
+-- chain, not the last.
+pattern DirOrSym :: File FileInfo -> File FileInfo
+pattern DirOrSym  f <- (sdir  -> (True, f))
+
+-- |Matches on symlinks pointing to directories only.
+pattern DirSym :: File FileInfo -> File FileInfo
+pattern DirSym   f <- (dirSym  -> (True, f))
+
+-- |Matches on any non-directory kind of files or symlinks pointing to
+-- such.
+-- If the symlink is pointing to a symlink pointing to such a file, then
+-- it will return True, but also return the first element in the symlink-
+-- chain, not the last.
+pattern FileLikeOrSym :: File FileInfo -> File FileInfo
+pattern FileLikeOrSym  f <- (sfileLike  -> (True, f))
+
+
+
+
+
+    -----------------
+    --[ INSTANCES ]--
+    -----------------
+
+
+-- | First compare constructors: Failed < Dir < File...
+-- Then compare `name`...
+-- Then compare free variable parameter of `File` constructors
+instance Ord (File FileInfo) where
+    compare (RegFile n a) (RegFile n' a') =
+        case compare n n' of
+             EQ -> compare a a'
+             el -> el
+    compare (Dir n b) (Dir n' b') =
+        case compare n n' of
+             EQ -> compare b b'
+             el -> el
+     -- after comparing above we can hand off to shape ord function:
+    compare d d' = comparingConstr d d'
+
+
+
+
+
+    ----------------------------
+    --[ HIGH LEVEL FUNCTIONS ]--
+    ----------------------------
+
+
+
+-- |Reads a file or directory Path into an `AnchoredFile`, filling the free
+-- variables via the given function.
+pathToFile :: (Path Abs -> IO a)
+           -> Path Abs
+           -> IO (File a)
+pathToFile ff p = do
+    fs   <- PF.getSymbolicLinkStatus (P.toFilePath p)
+    fv   <- ff p
+    constructFile fs fv p
+  where
+    constructFile fs fv p'
+      | PF.isSymbolicLink    fs = do
+          -- symlink madness, we need to make sure we save the correct
+          -- File
+          x <- PF.readSymbolicLink (P.fromAbs p')
+          resolvedSyml <- handleIOError (\_ -> return Nothing) $ do
+            -- watch out, we call </> from 'filepath' here, but it is safe
+            let sfp = (P.fromAbs . P.dirname $ p') </> x
+            rsfp <- realpath sfp
+            f <- pathToFile ff =<< P.parseAbs rsfp
+            return $ Just f
+          return $ SymLink p' fv resolvedSyml x
+      | PF.isDirectory       fs = return $ Dir       p' fv
+      | PF.isRegularFile     fs = return $ RegFile   p' fv
+      | PF.isBlockDevice     fs = return $ BlockDev  p' fv
+      | PF.isCharacterDevice fs = return $ CharDev   p' fv
+      | PF.isNamedPipe       fs = return $ NamedPipe p' fv
+      | PF.isSocket          fs = return $ Socket    p' fv
+      | otherwise               = ioError $ userError "Unknown filetype!"
+
+
+-- |Get the contents of a given directory and return them as a list
+-- of `AnchoredFile`.
+readDirectoryContents :: (Path Abs -> IO a)  -- ^ fills free a variable
+                      -> Path Abs            -- ^ path to read
+                      -> IO [File a]
+readDirectoryContents ff p = do
+  files <- getDirsFiles p
+  mapM (pathToFile ff) files
+
+
+-- |A variant of `readDirectoryContents` where the second argument
+-- is a `File`. If a non-directory is passed returns an empty list.
+getContents :: (Path Abs -> IO a)
+            -> File FileInfo
+            -> IO [File a]
+getContents ff (DirOrSym af)
+  = readDirectoryContents ff (path af)
+getContents _ _ = return []
+
+
+
+-- |Go up one directory in the filesystem hierarchy.
+goUp :: File FileInfo -> IO (File FileInfo)
+goUp file = pathToFile getFileInfo (P.dirname . path $ file)
+
+
+-- |Go up one directory in the filesystem hierarchy.
+goUp' :: Path Abs -> IO (File FileInfo)
+goUp' fp = pathToFile getFileInfo $ P.dirname fp
+
+
+
+
+    -----------------
+    --[ UTILITIES ]--
+    -----------------
+
+
+
+
+
+---- ORDERING AND EQUALITY ----
+
+
+ -- HELPER: a non-recursive comparison
+comparingConstr :: File FileInfo -> File FileInfo -> Ordering
+comparingConstr (FileLikeOrSym _) (DirOrSym _)      = GT
+comparingConstr (DirOrSym _)      (FileLikeOrSym _) = LT
+ -- else compare on the names of constructors that are the same, without
+ -- looking at the contents of Dir constructors:
+comparingConstr t t'  = compare (path t) (path t')
+
+
+
+
+
+
+
+    ---------------
+    --[ HELPERS ]--
+    ---------------
+
+
+---- CONSTRUCTOR IDENTIFIERS ----
+
+isFileC :: File a -> Bool
+isFileC RegFile{} = True
+isFileC _         = False
+
+
+isDirC :: File a -> Bool
+isDirC Dir{} = True
+isDirC _     = False
+
+
+isSymC :: File a -> Bool
+isSymC SymLink{} = True
+isSymC _         = False
+
+
+isBlockC :: File a -> Bool
+isBlockC BlockDev{} = True
+isBlockC _          = False
+
+
+isCharC :: File a -> Bool
+isCharC CharDev{} = True
+isCharC _         = False
+
+
+isNamedC :: File a -> Bool
+isNamedC NamedPipe{} = True
+isNamedC _           = False
+
+
+isSocketC :: File a -> Bool
+isSocketC Socket{} = True
+isSocketC _        = False
+
+
+
+
+---- IO HELPERS: ----
+
+
+
+-- |Gets all file information.
+getFileInfo :: Path Abs -> IO FileInfo
+getFileInfo fp = do
+  fs <- PF.getSymbolicLinkStatus (P.fromAbs fp)
+  return $ FileInfo
+    (PF.deviceID fs)
+    (PF.fileID fs)
+    (PF.fileMode fs)
+    (PF.linkCount fs)
+    (PF.fileOwner fs)
+    (PF.fileGroup fs)
+    (PF.specialDeviceID fs)
+    (PF.fileSize fs)
+    (PF.accessTime fs)
+    (PF.modificationTime fs)
+    (PF.statusChangeTime fs)
+    (PF.accessTimeHiRes fs)
+    (PF.modificationTimeHiRes fs)
+    (PF.statusChangeTimeHiRes fs)
+
+
+
+
+
+---- SYMLINK HELPERS: ----
+
+
+-- |Checks if a symlink is broken by examining the constructor of the
+-- symlink destination.
+--
+-- When called on a non-symlink, returns False.
+isBrokenSymlink :: File FileInfo -> Bool
+isBrokenSymlink (SymLink _ _ Nothing _) = True
+isBrokenSymlink _ = False
+
+
+
+
+---- PACKERS: ----
+
+
+-- |Pack the modification time into a string.
+packModTime :: File FileInfo
+            -> String
+packModTime = epochToString . modificationTime . fvar
+
+
+-- |Pack the modification time into a string.
+packAccessTime :: File FileInfo
+               -> String
+packAccessTime = epochToString . accessTime . fvar
+
+
+epochToString :: EpochTime -> String
+epochToString =  show . posixSecondsToUTCTime . realToFrac
+
+
+-- |Pack the permissions into a string, similar to what "ls -l" does.
+packPermissions :: File FileInfo
+                -> String
+packPermissions file = (pStr . fileMode) . fvar $ file
+  where
+    pStr :: FileMode -> String
+    pStr ffm = typeModeStr ++ ownerModeStr ++ groupModeStr ++ otherModeStr
+      where
+        typeModeStr = case file of
+          Dir {}       -> "d"
+          RegFile {}   -> "-"
+          SymLink {}   -> "l"
+          BlockDev {}  -> "b"
+          CharDev {}   -> "c"
+          NamedPipe {} -> "p"
+          Socket {}    -> "s"
+        ownerModeStr =    hasFmStr PF.ownerReadMode    "r"
+                       ++ hasFmStr PF.ownerWriteMode   "w"
+                       ++ hasFmStr PF.ownerExecuteMode "x"
+        groupModeStr =    hasFmStr PF.groupReadMode    "r"
+                       ++ hasFmStr PF.groupWriteMode   "w"
+                       ++ hasFmStr PF.groupExecuteMode "x"
+        otherModeStr =    hasFmStr PF.otherReadMode    "r"
+                       ++ hasFmStr PF.otherWriteMode   "w"
+                       ++ hasFmStr PF.otherExecuteMode "x"
+        hasFmStr fm str
+          | hasFM fm  = str
+          | otherwise = "-"
+        hasFM fm = ffm `PF.intersectFileModes` fm == fm
+
+
+packFileType :: File a -> String
+packFileType file = case file of
+  Dir {}       -> "Directory"
+  RegFile {}   -> "Regular File"
+  SymLink {}   -> "Symbolic Link"
+  BlockDev {}  -> "Block Device"
+  CharDev {}   -> "Char Device"
+  NamedPipe {} -> "Named Pipe"
+  Socket {}    -> "Socket"
+
+
+packLinkDestination :: File a -> Maybe ByteString
+packLinkDestination file = case file of
+  SymLink { rawdest = dest } -> Just dest
+  _                          -> Nothing
+
+
+
+
+---- OTHER: ----
+
+
+getFPasStr :: File a -> String
+getFPasStr = toString . P.fromAbs . path
+

src/HSFM/FileSystem/UtilTypes.hs

@@ -0,0 +1,83 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+
+-- |This module provides high-level IO related file operations like
+-- copy, delete, move and so on. It only operates on `Path Abs` which
+-- guarantees us well-typed paths which are absolute.
+--
+-- Some functions are just path-safe wrappers around
+-- unix functions, others have stricter exception handling
+-- and some implement functionality that doesn't have a unix
+-- counterpart (like `copyDirRecursive`).
+--
+-- Some of these operations are due to their nature not _atomic_, which
+-- means they may do multiple syscalls which form one context. Some
+-- of them also have to examine the filetypes explicitly before the
+-- syscalls, so a reasonable decision can be made. That means
+-- the result is undefined if another process changes that context
+-- while the non-atomic operation is still happening. However, where
+-- possible, as few syscalls as possible are used and the underlying
+-- exception handling is kept.
+module HSFM.FileSystem.UtilTypes where
+
+
+import Data.ByteString
+  (
+    ByteString
+  )
+import HPath
+  (
+    Path
+  , Abs
+  , Rel
+  )
+
+
+-- |Data type describing file operations.
+-- Useful to build up a list of operations or delay operations.
+data FileOperation = FCopy    Copy
+                   | FMove    Move
+                   | FDelete  [Path Abs]
+                   | FOpen    (Path Abs)
+                   | FExecute (Path Abs) [ByteString]
+                   | None
+
+
+-- |Data type describing partial or complete file copy operation.
+data Copy = PartialCopy [Path Abs] -- source files
+          | Copy        [Path Abs] -- source files
+                        (Path Abs) -- base destination directory
+
+
+-- |Data type describing partial or complete file move operation.
+data Move = PartialMove [Path Abs] -- source files
+          | Move        [Path Abs] -- source files
+                        (Path Abs) -- base destination directory
+
+
+-- |Collision modes that describe the behavior in case a file collision
+-- happens.
+data FCollisonMode = Strict  -- ^ fail if the target already exists
+                   | Overwrite
+                   | OverwriteAll
+                   | Skip
+                   | Rename (Path Rel)
+

src/HSFM/GUI/Glib/GlibString.hs

@@ -0,0 +1,79 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+
+module HSFM.GUI.Glib.GlibString where
+
+
+import qualified Data.ByteString as BS
+import Data.ByteString.UTF8
+  (
+    toString
+  )
+import Data.Word8
+  (
+    _percent
+  )
+import Foreign.C.String
+  (
+    CStringLen
+  , CString
+  )
+import Foreign.C.Types
+  (
+    CSize(..)
+  )
+import Foreign.Marshal.Utils
+  (
+    maybePeek
+  )
+import Foreign.Ptr
+  (
+    nullPtr
+  , plusPtr
+  )
+import System.Glib.UTFString
+
+
+
+-- TODO: move this to its own module
+instance GlibString BS.ByteString where
+    withUTFString = BS.useAsCString
+    withUTFStringLen s f = BS.useAsCStringLen  s (f . noNullPtrs)
+    peekUTFString s = do
+        len <- c_strlen s
+        BS.packCStringLen (s, fromIntegral len)
+    maybePeekUTFString = maybePeek peekUTFString
+    peekUTFStringLen = BS.packCStringLen
+    newUTFString = newUTFString . toString
+    newUTFStringLen = newUTFStringLen . toString
+    genUTFOfs = genUTFOfs . toString
+    stringLength = BS.length
+    unPrintf s = BS.intercalate (BS.pack [_percent, _percent]) (BS.split _percent s)
+
+
+foreign import ccall unsafe "string.h strlen" c_strlen
+    :: CString -> IO CSize
+
+
+noNullPtrs :: CStringLen -> CStringLen
+noNullPtrs (p, 0) | p == nullPtr = (plusPtr p 1, 0)
+noNullPtrs s = s
+

src/HSFM/GUI/Gtk.hs

@@ -0,0 +1,72 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2015 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module Main where
+
+
+import qualified Data.ByteString as BS
+import Data.Maybe
+  (
+    fromJust
+  , fromMaybe
+  )
+import Data.Word8
+import Graphics.UI.Gtk
+import qualified HPath as P
+import HSFM.FileSystem.FileType
+import HSFM.GUI.Gtk.Callbacks
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.MyGUI
+import HSFM.GUI.Gtk.MyView
+import Prelude hiding(readFile)
+import Safe
+  (
+    headDef
+  )
+import System.IO.Error
+  (
+    catchIOError
+  )
+import qualified System.Posix.Env.ByteString as SPE
+
+slash :: BS.ByteString
+slash = BS.singleton _slash
+
+main :: IO ()
+main = do
+  args <- SPE.getArgs
+  let mdir = fromMaybe (fromJust $ P.parseAbs slash)
+                       (P.parseAbs . headDef slash $ args)
+
+  file <- catchIOError (pathToFile getFileInfo mdir) $
+    \_ -> pathToFile getFileInfo  . fromJust $ P.parseAbs slash
+
+  _ <- initGUI
+  mygui <- createMyGUI
+  _ <- newTab mygui (notebook1 mygui) createTreeView file (-1)
+  _ <- newTab mygui (notebook2 mygui) createTreeView file (-1)
+
+  setGUICallbacks mygui
+
+  widgetShowAll (rootWin mygui)
+
+  _ <- mainGUI
+  return ()
+

src/HSFM/GUI/Gtk/Callbacks.hs

@@ -0,0 +1,728 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE TupleSections #-}
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.Callbacks where
+
+
+import Control.Concurrent.STM
+  (
+    readTVarIO
+  )
+import Control.Exception
+  (
+    throwIO
+  )
+import Control.Monad
+  (
+    forM
+  , forM_
+  , join
+  , void
+  , when
+  )
+import Control.Monad.IfElse
+import Control.Monad.IO.Class
+  (
+    liftIO
+  )
+import Control.Monad.Loops
+  (
+    iterateUntil
+  )
+import Data.ByteString
+  (
+    ByteString
+  )
+import Data.ByteString.UTF8
+  (
+    fromString
+  , toString
+  )
+import Data.Foldable
+  (
+    for_
+  )
+import Graphics.UI.Gtk
+import qualified HPath as P
+import HPath
+  (
+    fromAbs
+  , Abs
+  , Path
+  )
+import HPath.IO
+import HPath.IO.Errors
+import HSFM.FileSystem.FileType
+import HSFM.FileSystem.UtilTypes
+import HSFM.GUI.Gtk.Callbacks.Utils
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.Dialogs
+import HSFM.GUI.Gtk.MyView
+import HSFM.GUI.Gtk.Plugins
+import HSFM.GUI.Gtk.Settings
+import HSFM.GUI.Gtk.Utils
+import HSFM.History
+import HSFM.Settings
+import HSFM.Utils.IO
+import Prelude hiding(readFile)
+import System.Glib.UTFString
+  (
+    glibToString
+  )
+import qualified System.Posix.Process.ByteString as SPP
+import System.Posix.Types
+  (
+    ProcessID
+  )
+import Control.Concurrent.MVar
+  (
+    putMVar
+  , readMVar
+  , takeMVar
+  )
+import Paths_hsfm
+  (
+    getDataFileName
+  )
+
+
+
+
+    -----------------
+    --[ Callbacks ]--
+    -----------------
+
+
+
+
+---- MAIN CALLBACK ENTRYPOINT ----
+
+
+-- |Set callbacks for the whole gui, on hotkeys, events and stuff.
+setGUICallbacks :: MyGUI -> IO ()
+setGUICallbacks mygui = do
+
+  -- notebook toggle buttons
+  _ <- leftNbBtn mygui `on` toggled $ do
+    isPressed <- toggleButtonGetActive $ leftNbBtn mygui
+    if isPressed then widgetShow $ notebook1 mygui
+                 else widgetHide $ notebook1 mygui
+
+  _ <- rightNbBtn mygui `on` toggled $ do
+    isPressed <- toggleButtonGetActive $ rightNbBtn mygui
+    if isPressed then widgetShow $ notebook2 mygui
+                 else widgetHide $ notebook2 mygui
+
+  -- statusbar
+  _ <- clearStatusBar mygui `on` buttonActivated $ do
+       popStatusbar mygui
+       writeTVarIO (operationBuffer mygui) None
+
+  -- menubar-file
+  _ <- (menubarFileQuit . menubar) mygui `on` menuItemActivated $
+    mainQuit
+
+  -- menubar-help
+  _ <- (menubarHelpAbout . menubar) mygui `on` menuItemActivated $
+    liftIO showAboutDialog
+  return ()
+
+  -- key events
+  _ <- rootWin mygui `on` keyPressEvent $ tryEvent $ do
+    QuitModifier <- eventModifier
+    QuitKey      <- fmap glibToString eventKeyName
+    liftIO mainQuit
+
+  return ()
+
+
+-- |Set callbacks specific to a given view, on hotkeys, events and stuff.
+setViewCallbacks :: MyGUI -> MyView -> IO ()
+setViewCallbacks mygui myview = do
+  view' <- readTVarIO $ view myview
+  case view' of
+    fmv@(FMTreeView treeView) -> do
+      _ <- treeView `on` rowActivated
+             $ (\_ _ -> withItems mygui myview open)
+
+      -- drag events
+      _ <- treeView `on` dragBegin $
+        \_ -> withItems mygui myview moveInit
+      _ <- treeView `on` dragDrop $
+         \dc p ts -> do
+           p'    <- treeViewConvertWidgetToTreeCoords treeView p
+           mpath <- treeViewGetPathAtPos treeView p'
+           case mpath of
+             Nothing -> do
+               dragFinish dc False False ts
+               return False
+             Just _  -> do
+               atom  <- atomNew ("HSFM" :: String)
+               dragGetData treeView dc atom ts
+               return True
+      _ <- treeView `on` dragDataReceived $
+        \dc p _ ts ->
+          liftIO $ do
+            signalStopEmission treeView "drag_data_received"
+            p'    <- treeViewConvertWidgetToTreeCoords treeView p
+            mpath <- treeViewGetPathAtPos treeView p'
+            case mpath of
+              Nothing         -> dragFinish dc False False ts
+              Just (tp, _, _) -> do
+                mitem <- rawPathToItem myview tp
+                forM_ mitem $ \item ->
+                  operationFinal mygui myview (Just item)
+                dragFinish dc True False ts
+
+      commonGuiEvents fmv
+      return ()
+    fmv@(FMIconView iconView) -> do
+      _ <- iconView `on` itemActivated
+             $ (\_ -> withItems mygui myview open)
+      commonGuiEvents fmv
+      return ()
+  where
+    commonGuiEvents fmv = do
+      let view = fmViewToContainer fmv
+
+      -- focus events
+      _ <- notebook1 mygui `on` setFocusChild $ \w ->
+        case w of
+             Nothing -> widgetSetSensitive (leftNbIcon mygui) False
+             _       -> widgetSetSensitive (leftNbIcon mygui) True
+      _ <- notebook2 mygui `on` setFocusChild $ \w ->
+        case w of
+             Nothing -> widgetSetSensitive (rightNbIcon mygui) False
+             _       -> widgetSetSensitive (rightNbIcon mygui) True
+
+      -- GUI events
+      _ <- backViewB myview `on` buttonPressEvent $ do
+        eb <- eventButton
+        t  <- eventTime
+        case eb of
+          LeftButton  -> do
+            liftIO $ void $ goHistoryBack mygui myview
+            return True
+          RightButton -> do
+            his <- liftIO $ readMVar (history myview)
+            menu <- liftIO $ mkHistoryMenuB mygui myview
+                               (backwardsHistory his)
+            _ <- liftIO $ menuPopup menu $ Just (RightButton, t)
+            return True
+          _           -> return False
+      _ <- forwardViewB myview `on` buttonPressEvent $ do
+        eb <- eventButton
+        t  <- eventTime
+        case eb of
+          LeftButton  -> do
+            liftIO $ void $ goHistoryForward mygui myview
+            return True
+          RightButton -> do
+            his <- liftIO $ readMVar (history myview)
+            menu <- liftIO $ mkHistoryMenuF mygui myview
+                               (forwardHistory his)
+            _ <- liftIO $ menuPopup menu $ Just (RightButton, t)
+            return True
+          _           -> return False
+      _ <- urlBar myview `on` entryActivated $ urlGoTo mygui myview
+      _ <- upViewB myview `on` buttonActivated $
+           upDir mygui myview
+      _ <- homeViewB myview `on` buttonActivated $
+           goHome mygui myview
+      _ <- refreshViewB myview `on` buttonActivated $ do
+           cdir <- liftIO $ getCurrentDir myview
+           refreshView mygui myview cdir
+
+      -- key events
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        ShowHiddenModifier <- eventModifier
+        ShowHiddenKey      <- fmap glibToString eventKeyName
+        cdir <- liftIO $ getCurrentDir myview
+        liftIO $ modifyTVarIO (settings mygui)
+                              (\x -> x { showHidden = not . showHidden $ x})
+                 >> refreshView mygui myview cdir
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        UpDirModifier <- eventModifier
+        UpDirKey      <- fmap glibToString eventKeyName
+        liftIO $ upDir mygui myview
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        HistoryBackModifier <- eventModifier
+        HistoryBackKey      <- fmap glibToString eventKeyName
+        liftIO $ void $ goHistoryBack mygui myview
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        HistoryForwardModifier <- eventModifier
+        HistoryForwardKey      <- fmap glibToString eventKeyName
+        liftIO $ void $ goHistoryForward mygui myview
+      _ <- view `on` keyPressEvent $ tryEvent $ do
+        DeleteModifier <- eventModifier
+        DeleteKey      <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview del
+      _ <- view `on` keyPressEvent $ tryEvent $ do
+        OpenModifier <- eventModifier
+        OpenKey      <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview open
+      _ <- view `on` keyPressEvent $ tryEvent $ do
+        CopyModifier <- eventModifier
+        CopyKey      <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview copyInit
+      _ <- view `on` keyPressEvent $ tryEvent $ do
+        MoveModifier <- eventModifier
+        MoveKey      <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview moveInit
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        PasteModifier <- eventModifier
+        PasteKey      <- fmap glibToString eventKeyName
+        liftIO $ operationFinal mygui myview Nothing
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        NewTabModifier <- eventModifier
+        NewTabKey      <- fmap glibToString eventKeyName
+        liftIO $ void $ newTab' mygui myview
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        CloseTabModifier <- eventModifier
+        CloseTabKey      <- fmap glibToString eventKeyName
+        liftIO $ void $ closeTab mygui myview
+      _ <- viewBox myview `on` keyPressEvent $ tryEvent $ do
+        OpenTerminalModifier <- eventModifier
+        OpenTerminalKey      <- fmap glibToString eventKeyName
+        liftIO $ void $ openTerminalHere myview
+
+      -- mouse button click
+      _ <- view `on` buttonPressEvent $ do
+        eb <- eventButton
+        t  <- eventTime
+        case eb of
+          RightButton -> do
+              _ <- liftIO $ showPopup mygui myview t
+              -- this is just to not screw with current selection
+              -- on right-click
+              -- TODO: this misbehaves under IconView
+              (x, y) <- eventCoordinates
+              mpath  <- liftIO $ getPathAtPos fmv (x, y)
+              case mpath of
+                -- item under the cursor, only pass on the signal
+                -- if the item under the cursor is not within the current
+                -- selection
+                (Just tp) -> do
+                  selectedTps <- liftIO $ getSelectedTreePaths mygui myview
+                  return $ elem tp selectedTps
+                -- no item under the cursor, pass on the signal
+                Nothing -> return False
+          MiddleButton -> do
+            (x, y) <- eventCoordinates
+            mitem  <- liftIO $ (getPathAtPos fmv (x, y))
+                               >>= \mpos -> fmap join
+                                 $ forM mpos (rawPathToItem myview)
+
+            case mitem of
+              -- item under the cursor, only pass on the signal
+              -- if the item under the cursor is not within the current
+              -- selection
+              (Just item) -> do
+                liftIO $ opeInNewTab mygui myview item
+                return True
+              -- no item under the cursor, pass on the signal
+              Nothing -> return False
+
+          OtherButton 8 -> do
+            liftIO $ void $ goHistoryBack mygui myview
+            return False
+          OtherButton 9 -> do
+            liftIO $ void $ goHistoryForward mygui myview
+            return False
+          -- not right-click, so pass on the signal
+          _ -> return False
+
+      return ()
+    getPathAtPos fmv (x, y) =
+      case fmv of
+        FMTreeView treeView -> do
+          mp <- treeViewGetPathAtPos treeView (round x, round y)
+          return $ fmap (\(p, _, _) -> p) mp
+        FMIconView iconView ->
+           fmap (\tp -> if null tp then Nothing else Just tp)
+                  $ iconViewGetPathAtPos iconView (round x) (round y)
+
+
+
+
+---- OTHER ----
+
+
+openTerminalHere :: MyView -> IO ProcessID
+openTerminalHere myview = do
+  cwd <- (P.fromAbs . path) <$> getCurrentDir myview
+  SPP.forkProcess $ terminalCommand cwd
+
+
+
+
+---- TAB OPERATIONS ----
+
+
+-- |Closes the current tab, but only if there is more than one tab.
+closeTab :: MyGUI -> MyView -> IO ()
+closeTab _ myview = do
+  n <- notebookGetNPages (notebook myview)
+  when (n > 1) $ void $ destroyView myview
+
+
+newTab' :: MyGUI -> MyView -> IO ()
+newTab' mygui myview = do
+  cwd <- getCurrentDir myview
+  void $ withErrorDialog
+       $ newTab mygui (notebook myview) createTreeView cwd (-1)
+
+
+opeInNewTab :: MyGUI -> MyView -> Item -> IO ()
+opeInNewTab mygui myview item@(DirOrSym _) =
+  void $ withErrorDialog
+       $ newTab mygui (notebook myview) createTreeView item (-1)
+opeInNewTab _ _ _ = return ()
+
+
+
+---- FILE OPERATION CALLBACKS (COPY, MOVE, ...) ----
+
+
+-- |Supposed to be used with 'withRows'. Deletes a file or directory.
+del :: [Item] -> MyGUI -> MyView -> IO ()
+del [item] _ _ = withErrorDialog $ do
+  let cmsg  = "Really delete \"" ++ getFPasStr item ++ "\"?"
+  withConfirmationDialog cmsg
+    $ easyDelete . path $ item
+-- this throws on the first error that occurs
+del items@(_:_) _ _ = withErrorDialog $ do
+  let cmsg  = "Really delete " ++ show (length items) ++ " files?"
+  withConfirmationDialog cmsg
+    $ forM_ items $ \item -> easyDelete . path $ item
+del _ _ _ = withErrorDialog
+              . ioError $ userError
+                          "Operation not supported on multiple files"
+
+
+-- |Initializes a file move operation.
+moveInit :: [Item] -> MyGUI -> MyView -> IO ()
+moveInit items@(_:_) mygui _ = do
+  writeTVarIO (operationBuffer mygui) (FMove . PartialMove . map path $ items)
+  let sbmsg = case items of
+              (item:[]) -> "Move buffer: " ++ getFPasStr item
+              _         -> "Move buffer: " ++ (show . length $ items)
+                                           ++ " items"
+  popStatusbar mygui
+  void $ pushStatusBar mygui sbmsg
+moveInit _ _ _ = withErrorDialog
+                   . ioError $ userError
+                               "No file selected!"
+
+-- |Supposed to be used with 'withRows'. Initializes a file copy operation.
+copyInit :: [Item] -> MyGUI -> MyView -> IO ()
+copyInit items@(_:_) mygui _ = do
+  writeTVarIO (operationBuffer mygui) (FCopy . PartialCopy . map path $ items)
+  let sbmsg = case items of
+              (item:[]) -> "Copy buffer: " ++ getFPasStr item
+              _         -> "Copy buffer: " ++ (show . length $ items)
+                                           ++ " items"
+  popStatusbar mygui
+  void $ pushStatusBar mygui sbmsg
+copyInit _ _ _ = withErrorDialog
+                   . ioError $ userError
+                               "No file selected!"
+
+
+-- |Finalizes a file operation, such as copy or move.
+operationFinal :: MyGUI -> MyView -> Maybe Item -> IO ()
+operationFinal mygui myview mitem = withErrorDialog $ do
+  op <- readTVarIO (operationBuffer mygui)
+  cdir <- case mitem of
+            Nothing -> path <$> getCurrentDir myview
+            Just x  -> return $ path x
+  case op of
+    FMove (PartialMove s) -> do
+      let cmsg = "Really move " ++ imsg s
+                  ++ " to \"" ++ toString (P.fromAbs cdir)
+                  ++ "\"?"
+      withConfirmationDialog cmsg $ doFileOperation (FMove $ Move s cdir)
+      popStatusbar mygui
+      writeTVarIO (operationBuffer mygui) None
+    FCopy (PartialCopy s) -> do
+      let cmsg = "Really copy " ++ imsg s
+                 ++ " to \"" ++ toString (P.fromAbs cdir)
+                 ++ "\"?"
+      withConfirmationDialog cmsg $ doFileOperation (FCopy $ Copy s cdir)
+    _ -> return ()
+  where
+    imsg s = case s of
+               (item:[]) -> "\"" ++ toString (P.fromAbs item) ++ "\""
+               items     -> (show . length $ items) ++ " items"
+
+
+-- |Create a new file.
+newFile :: MyGUI -> MyView -> IO ()
+newFile _ myview = withErrorDialog $ do
+  mfn   <- textInputDialog "Enter file name" ("" :: String)
+  let pmfn = P.parseRel =<< fromString <$> mfn
+  for_ pmfn $ \fn -> do
+    cdir  <- getCurrentDir myview
+    createRegularFile newFilePerms (path cdir P.</> fn)
+
+
+-- |Create a new directory.
+newDir :: MyGUI -> MyView -> IO ()
+newDir _ myview = withErrorDialog $ do
+  mfn   <- textInputDialog "Enter directory name" ("" :: String)
+  let pmfn = P.parseRel =<< fromString <$> mfn
+  for_ pmfn $ \fn -> do
+    cdir  <- getCurrentDir myview
+    createDir newDirPerms (path cdir P.</> fn)
+
+
+renameF :: [Item] -> MyGUI -> MyView -> IO ()
+renameF [item] _ _ = withErrorDialog $ do
+  iname <- P.fromRel <$> (P.basename $ path item)
+  mfn  <- textInputDialog "Enter new file name" (iname :: ByteString)
+  let pmfn = P.parseRel =<< fromString <$> mfn
+  for_ pmfn $ \fn -> do
+    let cmsg = "Really rename \"" ++ getFPasStr item
+               ++ "\"" ++ " to \""
+               ++ toString (P.fromAbs $ (P.dirname . path $ item)
+                                             P.</> fn) ++ "\"?"
+    withConfirmationDialog cmsg $
+      HPath.IO.renameFile (path item)
+                          ((P.dirname $ path item) P.</> fn)
+renameF _ _ _ = withErrorDialog
+                  . ioError $ userError
+                              "Operation not supported on multiple files"
+
+
+
+
+---- DIRECTORY TRAVERSAL AND FILE OPENING CALLBACKS ----
+
+
+-- |Go to the url given at the 'urlBar' and visualize it in the given
+-- treeView.
+--
+-- If the url is invalid, does nothing.
+urlGoTo :: MyGUI -> MyView -> IO ()
+urlGoTo mygui myview = withErrorDialog $ do
+  fp <- entryGetText (urlBar myview)
+  forM_ (P.parseAbs fp :: Maybe (Path Abs)) $ \fp' ->
+      whenM (canOpenDirectory fp')
+            (goDir True mygui myview =<< (pathToFile getFileInfo $ fp'))
+
+
+goHome :: MyGUI -> MyView -> IO ()
+goHome mygui myview =  withErrorDialog $ do
+  homedir <- home
+  forM_ (P.parseAbs homedir :: Maybe (Path Abs)) $ \fp' ->
+      whenM (canOpenDirectory fp')
+            (goDir True mygui myview =<< (pathToFile getFileInfo $ fp'))
+
+
+-- |Execute a given file.
+execute :: [Item] -> MyGUI -> MyView -> IO ()
+execute [item] _ _ = withErrorDialog $
+  void $ executeFile (path item) []
+execute _ _ _ = withErrorDialog
+                  . ioError $ userError
+                              "Operation not supported on multiple files"
+
+
+-- |Supposed to be used with 'withRows'. Opens a file or directory.
+open :: [Item] -> MyGUI -> MyView -> IO ()
+open [item] mygui myview = withErrorDialog $
+  case item of
+    DirOrSym r -> do
+      nv <- pathToFile getFileInfo $ path r
+      goDir True mygui myview nv
+    r ->
+      void $ openFile . path $ r
+open items mygui myview = do
+  let dirs  = filter (fst . sdir) items
+      files = filter (fst . sfileLike) items
+  forM_ dirs (withErrorDialog . opeInNewTab mygui myview)
+  forM_ files (withErrorDialog . openFile . path)
+
+
+-- |Go up one directory and visualize it in the treeView.
+upDir :: MyGUI -> MyView -> IO ()
+upDir mygui myview = withErrorDialog $ do
+  cdir <- getCurrentDir myview
+  nv <- goUp cdir
+  goDir True mygui myview nv
+
+
+
+
+---- HISTORY CALLBACKS ----
+
+
+-- |Go "back" in the history.
+goHistoryBack :: MyGUI -> MyView -> IO (Path Abs)
+goHistoryBack mygui myview = do
+  hs <- takeMVar (history myview)
+  let nhs = historyBack hs
+  putMVar (history myview) nhs
+  nv <- pathToFile getFileInfo $ currentDir nhs
+  goDir False mygui myview nv
+  return $ currentDir nhs
+
+
+-- |Go "forward" in the history.
+goHistoryForward :: MyGUI -> MyView -> IO (Path Abs)
+goHistoryForward mygui myview = do
+  hs <- takeMVar (history myview)
+  let nhs = historyForward hs
+  putMVar (history myview) nhs
+  nv <- pathToFile getFileInfo $ currentDir nhs
+  goDir False mygui myview nv
+  return $ currentDir nhs
+
+
+-- |Show backwards history in a drop-down menu, depending on the input.
+mkHistoryMenuB :: MyGUI -> MyView -> [Path Abs] -> IO Menu
+mkHistoryMenuB mygui myview hs = do
+  menu <- menuNew
+  menuitems <- forM hs $ \p -> do
+    item <- menuItemNewWithLabel (fromAbs p)
+    _ <- item `on` menuItemActivated $
+      void $ iterateUntil (== p) (goHistoryBack mygui myview)
+    return item
+  forM_ menuitems $ \item -> menuShellAppend menu item
+  widgetShowAll menu
+  return menu
+
+
+-- |Show forward history in a drop-down menu, depending on the input.
+mkHistoryMenuF :: MyGUI -> MyView -> [Path Abs] -> IO Menu
+mkHistoryMenuF mygui myview hs = do
+  menu <- menuNew
+  menuitems <- forM hs $ \p -> do
+    item <- menuItemNewWithLabel (fromAbs p)
+    _ <- item `on` menuItemActivated $
+      void $ iterateUntil (== p) (goHistoryForward mygui myview)
+    return item
+  forM_ menuitems $ \item -> menuShellAppend menu item
+  widgetShowAll menu
+  return menu
+
+
+
+
+---- RIGHTCLICK CALLBACKS ----
+
+
+-- |TODO: hopefully this does not leak
+showPopup :: MyGUI -> MyView -> TimeStamp -> IO ()
+showPopup mygui myview t
+  | null myplugins = return ()
+  | otherwise = do
+
+    rcmenu <- doRcMenu
+
+    -- add common callbacks
+    _ <- (\_ -> rcFileOpen rcmenu) myview `on` menuItemActivated $
+      liftIO $ withItems mygui myview open
+    _ <- (rcFileExecute rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview execute
+    _ <- (rcFileNewRegFile rcmenu) `on` menuItemActivated $
+      liftIO $ newFile mygui myview
+    _ <- (rcFileNewDir rcmenu) `on` menuItemActivated $
+      liftIO $ newDir mygui myview
+    _ <- (rcFileNewTab rcmenu) `on` menuItemActivated $
+      liftIO $ newTab' mygui myview
+    _ <- (rcFileNewTerm rcmenu) `on` menuItemActivated $
+      liftIO $ void $ openTerminalHere myview
+    _ <- (rcFileCopy rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview copyInit
+    _ <- (rcFileRename rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview renameF
+    _ <- (rcFilePaste rcmenu) `on` menuItemActivated $
+      liftIO $ operationFinal mygui myview Nothing
+    _ <- (rcFileDelete rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview del
+    _ <- (rcFileProperty rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview showFilePropertyDialog
+    _ <- (rcFileCut rcmenu) `on` menuItemActivated $
+      liftIO $ withItems mygui myview moveInit
+    _ <- (rcFileIconView rcmenu) `on` menuItemActivated $
+      liftIO $ switchView mygui myview createIconView
+    _ <- (rcFileTreeView rcmenu) `on` menuItemActivated $
+      liftIO $ switchView mygui myview createTreeView
+
+
+    -- add another plugin separator after the existing one
+    -- where we want to place our plugins
+    sep2 <- separatorMenuItemNew
+    widgetShow sep2
+
+    menuShellInsert (rcMenu rcmenu) sep2 insertPos
+
+    plugins <- forM myplugins $ \(ma, mb, mc) -> fmap (, mb, mc) ma
+    -- need to reverse plugins list so the order is right
+    forM_ (reverse plugins) $ \(plugin, filter', cb) -> do
+      showItem <- withItems mygui myview filter'
+
+      menuShellInsert (rcMenu rcmenu) plugin insertPos
+      when showItem $ widgetShow plugin
+      -- init callback
+      plugin `on` menuItemActivated $ withItems mygui myview cb
+
+    menuPopup (rcMenu rcmenu) $ Just (RightButton, t)
+  where
+    doRcMenu = do
+      builder <- builderNew
+      builderAddFromFile builder =<< getDataFileName "data/Gtk/builder.xml"
+
+      -- create static right-click menu
+      rcMenu            <- builderGetObject builder castToMenu
+                           (fromString "rcMenu")
+      rcFileOpen        <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileOpen")
+      rcFileExecute     <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileExecute")
+      rcFileNewRegFile  <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileNewRegFile")
+      rcFileNewDir      <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileNewDir")
+      rcFileNewTab      <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileNewTab")
+      rcFileNewTerm     <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileNewTerm")
+      rcFileCut         <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileCut")
+      rcFileCopy        <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileCopy")
+      rcFileRename      <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileRename")
+      rcFilePaste       <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFilePaste")
+      rcFileDelete      <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileDelete")
+      rcFileProperty    <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileProperty")
+      rcFileIconView    <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileIconView")
+      rcFileTreeView    <- builderGetObject builder castToImageMenuItem
+                           (fromString "rcFileTreeView")
+
+      return $ MkRightClickMenu {..}
+

src/HSFM/GUI/Gtk/Callbacks.hs-boot

@@ -0,0 +1,25 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+
+module HSFM.GUI.Gtk.Callbacks where
+
+import HSFM.GUI.Gtk.Data
+
+
+setViewCallbacks :: MyGUI -> MyView -> IO ()

src/HSFM/GUI/Gtk/Callbacks/Utils.hs

@@ -0,0 +1,128 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.Callbacks.Utils where
+
+
+
+import Control.Monad
+  (
+    forM_
+  , when
+  )
+import Data.Foldable
+  (
+    for_
+  )
+import Data.Maybe
+  (
+    fromJust
+  )
+import GHC.IO.Exception
+  (
+    IOErrorType(..)
+  )
+import Graphics.UI.Gtk
+import qualified HPath as P
+import HPath.IO
+import HPath.IO.Errors
+import HSFM.FileSystem.FileType
+import qualified HSFM.FileSystem.UtilTypes as UT
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.Dialogs
+import HSFM.GUI.Gtk.MyView
+import HSFM.History
+import Prelude hiding(readFile)
+import Control.Concurrent.MVar
+  (
+    putMVar
+  , tryTakeMVar
+  )
+
+
+
+
+-- |Carries out a file operation with the appropriate error handling
+-- allowing the user to react to various exceptions with further input.
+doFileOperation :: UT.FileOperation -> IO ()
+doFileOperation (UT.FCopy (UT.Copy (f':fs') to)) =
+  _doFileOperation (f':fs') to (\p1 p2 cm -> easyCopy p1 p2 cm FailEarly)
+    $ doFileOperation (UT.FCopy $ UT.Copy fs' to)
+doFileOperation (UT.FMove (UT.Move (f':fs') to)) =
+  _doFileOperation (f':fs') to moveFile
+    $ doFileOperation (UT.FMove $ UT.Move fs' to)
+doFileOperation _ = return ()
+
+
+_doFileOperation :: [P.Path b1]
+                 -> P.Path P.Abs
+                 -> (P.Path b1 -> P.Path P.Abs -> CopyMode -> IO b)
+                 -> IO ()
+                 -> IO ()
+_doFileOperation [] _ _ _ = return ()
+_doFileOperation (f:fs) to mc rest = do
+  toname <- P.basename f
+  let topath = to P.</> toname
+  reactOnError (mc f topath Strict >> rest)
+    -- TODO: how safe is 'AlreadyExists' here?
+    [(AlreadyExists  , collisionAction fileCollisionDialog topath)]
+    [(SameFile{}     , collisionAction renameDialog topath)]
+  where
+    collisionAction diag topath = do
+      mcm <- diag . P.fromAbs $ topath
+      forM_ mcm $ \cm -> case cm of
+        UT.Overwrite -> mc f topath Overwrite >> rest
+        UT.OverwriteAll -> forM_ (f:fs) $ \x -> do
+                          toname' <- P.basename x
+                          mc x (to P.</> toname') Overwrite
+        UT.Skip         -> rest
+        UT.Rename newn  -> mc f (to P.</> newn) Strict >> rest
+        _            -> return ()
+
+
+-- |Helper that is invoked for any directory change operations.
+goDir :: Bool    -- ^ whether to update the history
+      -> MyGUI
+      -> MyView
+      -> Item
+      -> IO ()
+goDir bhis mygui myview item = do
+  when bhis $ do
+    mhs <- tryTakeMVar (history myview)
+    for_ mhs $ \hs -> do
+      let nhs = historyNewPath (path item) hs
+      putMVar (history myview) nhs
+  refreshView mygui myview item
+
+  -- set notebook tab label
+  page <- notebookGetCurrentPage (notebook myview)
+  child <- fromJust <$> notebookGetNthPage (notebook myview) page
+
+  -- get the label
+  ebox <- (castToEventBox . fromJust)
+    <$> notebookGetTabLabel (notebook myview) child
+  label <- (castToLabel . head) <$> containerGetChildren ebox
+
+  -- set the label
+  labelSetText label
+    (maybe (P.fromAbs $ path item)
+           P.fromRel $ P.basename . path $ item)
+

src/HSFM/GUI/Gtk/Data.hs

@@ -0,0 +1,157 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.Data where
+
+
+import Control.Concurrent.MVar
+  (
+    MVar
+  )
+import Control.Concurrent.STM
+  (
+    TVar
+  )
+import Graphics.UI.Gtk hiding (MenuBar)
+import HSFM.FileSystem.FileType
+import HSFM.FileSystem.UtilTypes
+import HSFM.History
+import System.INotify
+  (
+    INotify
+  )
+
+
+
+    ------------------
+    --[ Base Types ]--
+    ------------------
+
+
+-- |Monolithic object passed to various GUI functions in order
+-- to keep the API stable and not alter the parameters too much.
+-- This only holds GUI widgets that are needed to be read during
+-- runtime.
+data MyGUI = MkMyGUI {
+  -- |main Window
+    rootWin :: !Window
+
+  -- widgets on the main window
+  , menubar        :: !MenuBar
+  , statusBar      :: !Statusbar
+  , clearStatusBar :: !Button
+
+  , notebook1      :: !Notebook
+  , leftNbBtn      :: !ToggleButton
+  , leftNbIcon     :: !Image
+
+  , notebook2      :: !Notebook
+  , rightNbBtn     :: !ToggleButton
+  , rightNbIcon    :: !Image
+
+  -- other
+  , fprop    :: !FilePropertyGrid
+  , settings :: !(TVar FMSettings)
+
+  , operationBuffer :: !(TVar FileOperation)
+}
+
+
+-- |This describes the contents of the current view and is separated from MyGUI,
+-- because we might want to have multiple views.
+data MyView = MkMyView {
+    view            :: !(TVar FMView)
+  , cwd             :: !(MVar Item)
+  , rawModel        :: !(TVar (ListStore Item))
+  , sortedModel     :: !(TVar (TypedTreeModelSort Item))
+  , filteredModel   :: !(TVar (TypedTreeModelFilter Item))
+  , inotify         :: !(MVar INotify)
+  , notebook        :: !Notebook -- current notebook
+
+  -- the first part of the tuple represents the "go back"
+  -- the second part the "go forth" in the history
+  , history         :: !(MVar BrowsingHistory)
+
+  -- sub-widgets
+  , scroll       :: !ScrolledWindow
+  , viewBox      :: !Box
+  , backViewB    :: !Button
+  , upViewB      :: !Button
+  , forwardViewB :: !Button
+  , homeViewB    :: !Button
+  , refreshViewB :: !Button
+  , urlBar       :: !Entry
+}
+
+
+data MenuBar = MkMenuBar {
+    menubarFileQuit  :: !ImageMenuItem
+  , menubarHelpAbout :: !ImageMenuItem
+}
+
+data RightClickMenu = MkRightClickMenu {
+    rcMenu           :: !Menu
+  , rcFileOpen       :: !ImageMenuItem
+  , rcFileExecute    :: !ImageMenuItem
+  , rcFileNewRegFile :: !ImageMenuItem
+  , rcFileNewDir     :: !ImageMenuItem
+  , rcFileNewTab     :: !ImageMenuItem
+  , rcFileNewTerm    :: !ImageMenuItem
+  , rcFileCut        :: !ImageMenuItem
+  , rcFileCopy       :: !ImageMenuItem
+  , rcFileRename     :: !ImageMenuItem
+  , rcFilePaste      :: !ImageMenuItem
+  , rcFileDelete     :: !ImageMenuItem
+  , rcFileProperty   :: !ImageMenuItem
+  , rcFileIconView   :: !ImageMenuItem
+  , rcFileTreeView   :: !ImageMenuItem
+}
+
+data FilePropertyGrid = MkFilePropertyGrid {
+    fpropGrid      :: !Grid
+  , fpropFnEntry   :: !Entry
+  , fpropLocEntry  :: !Entry
+  , fpropTsEntry   :: !Entry
+  , fpropModEntry  :: !Entry
+  , fpropAcEntry   :: !Entry
+  , fpropFTEntry   :: !Entry
+  , fpropPermEntry :: !Entry
+  , fpropLDEntry   :: !Entry
+}
+
+
+-- |FM-wide settings.
+data FMSettings = MkFMSettings {
+    showHidden :: !Bool
+  , isLazy     :: !Bool
+  , iconSize   :: !Int
+}
+
+data FMView = FMTreeView !TreeView
+            | FMIconView !IconView
+
+type Item = File FileInfo
+
+
+
+fmViewToContainer :: FMView -> Container
+fmViewToContainer (FMTreeView x) =  castToContainer . toGObject $ x
+fmViewToContainer (FMIconView x) =  castToContainer . toGObject $ x
+

src/HSFM/GUI/Gtk/Dialogs.hs

@@ -0,0 +1,328 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE CPP #-}
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.Dialogs where
+
+
+import Codec.Binary.UTF8.String
+  (
+    decodeString
+  )
+import Control.Exception
+  (
+    catches
+  , displayException
+  , throwIO
+  , IOException
+  , Handler(..)
+  )
+import Control.Monad
+  (
+    forM
+  , when
+  , void
+  )
+import Data.ByteString
+  (
+    ByteString
+  )
+import qualified Data.ByteString as BS
+import Data.ByteString.UTF8
+  (
+    fromString
+  )
+import Distribution.Package
+  (
+    PackageIdentifier(..)
+  , packageVersion
+  , unPackageName
+  )
+#if MIN_VERSION_Cabal(2,0,0)
+import Distribution.Version
+  (
+    showVersion
+  )
+#else
+import Data.Version
+  (
+    showVersion
+  )
+#endif
+import Distribution.PackageDescription
+  (
+    GenericPackageDescription(..)
+  , PackageDescription(..)
+  )
+#if MIN_VERSION_Cabal(2,2,0)
+import Distribution.PackageDescription.Parsec
+#else
+import Distribution.PackageDescription.Parse
+#endif
+  (
+#if MIN_VERSION_Cabal(2,0,0)
+    readGenericPackageDescription,
+#else
+    readPackageDescription,
+#endif
+  )
+import Distribution.Verbosity
+  (
+    silent
+  )
+import Graphics.UI.Gtk
+import qualified HPath as P
+import HPath.IO.Errors
+import HSFM.FileSystem.FileType
+import HSFM.FileSystem.UtilTypes
+import HSFM.GUI.Glib.GlibString()
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.Errors
+import Paths_hsfm
+  (
+    getDataFileName
+  )
+import System.Glib.UTFString
+  (
+    GlibString
+  )
+import System.Posix.FilePath
+  (
+    takeFileName
+  )
+
+
+
+
+
+
+
+    ---------------------
+    --[ Dialog popups ]--
+    ---------------------
+
+
+-- |Pops up an error Dialog with the given String.
+showErrorDialog :: String -> IO ()
+showErrorDialog str = do
+  errorDialog <- messageDialogNew Nothing
+                                  [DialogDestroyWithParent]
+                                  MessageError
+                                  ButtonsClose
+                                  str
+  _ <- dialogRun errorDialog
+  widgetDestroy errorDialog
+
+
+-- |Asks the user for confirmation and returns True/False.
+showConfirmationDialog :: String -> IO Bool
+showConfirmationDialog str = do
+  confirmDialog <- messageDialogNew Nothing
+                                    [DialogDestroyWithParent]
+                                    MessageQuestion
+                                    ButtonsYesNo
+                                    str
+  rID <- dialogRun confirmDialog
+  widgetDestroy confirmDialog
+  case rID of
+    ResponseYes -> return True
+    ResponseNo  -> return False
+    _           -> return False
+
+
+fileCollisionDialog :: ByteString -> IO (Maybe FCollisonMode)
+fileCollisionDialog t = do
+  chooserDialog <- messageDialogNew Nothing
+                                    [DialogDestroyWithParent]
+                                    MessageQuestion
+                                    ButtonsNone
+                                    (fromString "Target \"" `BS.append`
+                                     t `BS.append`
+                                     fromString "\" exists, how to proceed?")
+  _ <- dialogAddButton chooserDialog "Cancel"        (ResponseUser 0)
+  _ <- dialogAddButton chooserDialog "Overwrite"     (ResponseUser 1)
+  _ <- dialogAddButton chooserDialog "Overwrite all" (ResponseUser 2)
+  _ <- dialogAddButton chooserDialog "Skip"          (ResponseUser 3)
+  _ <- dialogAddButton chooserDialog "Rename"        (ResponseUser 4)
+  rID <- dialogRun chooserDialog
+  widgetDestroy chooserDialog
+  case rID of
+    ResponseUser 0 -> return Nothing
+    ResponseUser 1 -> return (Just Overwrite)
+    ResponseUser 2 -> return (Just OverwriteAll)
+    ResponseUser 3 -> return (Just Skip)
+    ResponseUser 4 -> do
+      mfn   <- textInputDialog (fromString "Enter new name") (takeFileName t)
+      forM mfn $ \fn -> do
+        pfn <- P.parseRel (fromString fn)
+        return $ Rename pfn
+    _              -> throwIO UnknownDialogButton
+
+
+renameDialog :: ByteString -> IO (Maybe FCollisonMode)
+renameDialog t = do
+  chooserDialog <- messageDialogNew Nothing
+                                    [DialogDestroyWithParent]
+                                    MessageQuestion
+                                    ButtonsNone
+                                    (fromString "Target \"" `BS.append`
+                                     t `BS.append`
+                                     fromString "\" exists, how to proceed?")
+  _ <- dialogAddButton chooserDialog "Cancel"        (ResponseUser 0)
+  _ <- dialogAddButton chooserDialog "Skip"          (ResponseUser 1)
+  _ <- dialogAddButton chooserDialog "Rename"        (ResponseUser 2)
+  rID <- dialogRun chooserDialog
+  widgetDestroy chooserDialog
+  case rID of
+    ResponseUser 0 -> return Nothing
+    ResponseUser 1 -> return (Just Skip)
+    ResponseUser 2 -> do
+      mfn   <- textInputDialog (fromString "Enter new name") (takeFileName t)
+      forM mfn $ \fn -> do
+        pfn <- P.parseRel (fromString fn)
+        return $ Rename pfn
+    _              -> throwIO UnknownDialogButton
+
+
+-- |Shows the about dialog from the help menu.
+showAboutDialog :: IO ()
+showAboutDialog = do
+  ad       <- aboutDialogNew
+  lstr     <- Prelude.readFile =<< getDataFileName "LICENSE"
+  hsfmicon <- pixbufNewFromFile =<< getDataFileName "data/Gtk/icons/hsfm.png"
+  pdesc    <- fmap packageDescription
+#if MIN_VERSION_Cabal(2,0,0)
+                   (readGenericPackageDescription silent
+#else
+                   (readPackageDescription silent
+#endif
+                     =<< getDataFileName "hsfm.cabal")
+  set ad
+    [ aboutDialogProgramName  := (unPackageName . pkgName . package) pdesc
+    , aboutDialogName         := (unPackageName . pkgName . package) pdesc
+    , aboutDialogVersion      := (showVersion . packageVersion . package) pdesc
+    , aboutDialogCopyright    := copyright pdesc
+    , aboutDialogComments     := description pdesc
+    , aboutDialogLicense      := Just lstr
+    , aboutDialogWebsite      := homepage pdesc
+    , aboutDialogAuthors      := [author pdesc]
+    , aboutDialogLogo         := Just hsfmicon
+    , aboutDialogWrapLicense  := True
+    ]
+  _ <- dialogRun ad
+  widgetDestroy ad
+
+
+-- |Carry out an IO action with a confirmation dialog.
+-- If the user presses "No", then do nothing.
+withConfirmationDialog :: String -> IO () -> IO ()
+withConfirmationDialog str io = do
+  run <- showConfirmationDialog str
+  when run io
+
+
+-- |Execute the given IO action. If the action throws exceptions,
+-- visualize them via 'showErrorDialog'.
+withErrorDialog :: IO a -> IO ()
+withErrorDialog io =
+  catches (void io)
+    [ Handler (\e -> showErrorDialog
+                       . decodeString
+                       . displayException
+                       $ (e :: IOException))
+    , Handler (\e -> showErrorDialog
+                       $ displayException (e :: HPathIOException))
+    ]
+
+
+-- |Asks the user which directory copy mode he wants via dialog popup
+-- and returns 'DirCopyMode'.
+textInputDialog :: (GlibString s1, GlibString s2)
+                => s1   -- ^ window title
+                -> s2   -- ^ initial text in input widget
+                -> IO (Maybe String)
+textInputDialog title inittext = do
+  chooserDialog <- messageDialogNew Nothing
+                                    [DialogDestroyWithParent]
+                                    MessageQuestion
+                                    ButtonsNone
+                                    title
+  entry <- entryNew
+  entrySetText entry inittext
+  cbox <- dialogGetActionArea chooserDialog
+  _ <- dialogAddButton chooserDialog "Ok"     (ResponseUser 0)
+  _ <- dialogAddButton chooserDialog "Cancel" (ResponseUser 1)
+  boxPackStart (castToBox cbox) entry PackNatural 5
+  widgetShowAll chooserDialog
+  rID <- dialogRun chooserDialog
+  ret <- case rID of
+           -- TODO: make this more safe
+           ResponseUser 0 -> Just <$> entryGetText entry
+           ResponseUser 1 -> return Nothing
+           _              -> throwIO UnknownDialogButton
+  widgetDestroy chooserDialog
+  return ret
+
+
+showFilePropertyDialog :: [Item] -> MyGUI -> MyView -> IO ()
+showFilePropertyDialog [item] mygui _ = do
+  dialog <- messageDialogNew Nothing
+                             [DialogDestroyWithParent]
+                             MessageInfo
+                             ButtonsNone
+                             "File Properties"
+
+  let fprop' = fprop mygui
+      grid   = fpropGrid fprop'
+
+  entrySetText (fpropFnEntry fprop')  (maybe BS.empty P.fromRel
+                                        $ P.basename . path $ item)
+  entrySetText (fpropLocEntry fprop') (P.fromAbs . P.dirname . path $ item)
+  entrySetText (fpropTsEntry fprop')  (show . fileSize $ fvar item)
+  entrySetText (fpropModEntry fprop') (packModTime item)
+  entrySetText (fpropAcEntry fprop')  (packAccessTime item)
+  entrySetText (fpropFTEntry fprop')  (packFileType item)
+  entrySetText (fpropPermEntry fprop')
+               (tail $ packPermissions item) -- throw away the filetype part
+  case packLinkDestination item of
+    (Just dest) -> do
+      widgetSetSensitive (fpropLDEntry fprop') True
+      entrySetText (fpropLDEntry fprop') dest
+    Nothing     -> do
+      widgetSetSensitive (fpropLDEntry fprop') False
+      entrySetText (fpropLDEntry fprop') "( Not a symlink )"
+
+
+  cbox <- dialogGetActionArea dialog
+  _ <- dialogAddButton dialog "Ok"     (ResponseUser 0)
+  _ <- dialogAddButton dialog "Cancel" (ResponseUser 1)
+  boxPackStart (castToBox cbox) grid PackNatural 5
+
+  widgetShowAll dialog
+  _ <- dialogRun dialog
+
+  -- make sure our grid does not get destroyed
+  containerRemove (castToBox cbox) grid
+
+  widgetDestroy dialog
+
+  return ()
+showFilePropertyDialog _ _ _ = return ()
+

src/HSFM/GUI/Gtk/Errors.hs

@@ -0,0 +1,34 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+-- |Provides error handling for Gtk.
+module HSFM.GUI.Gtk.Errors where
+
+
+import Control.Exception
+import Data.Typeable
+
+
+
+data GtkException = UnknownDialogButton
+  deriving (Show, Typeable)
+
+instance Exception GtkException
+

src/HSFM/GUI/Gtk/Icons.hs

@@ -1,6 +1,6 @@
 {--
 HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
+Copyright (C) 2016 Julian Ospald
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
@@ -19,11 +19,18 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 {-# OPTIONS_HADDOCK ignore-exports #-}
 
 -- |Module for Gtk icon handling.
-module GUI.Gtk.Icons where
+module HSFM.GUI.Gtk.Icons where
 
 
+import Data.Maybe
+  (
+    fromJust
+  )
 import Graphics.UI.Gtk
-import Graphics.UI.Gtk.Gdk.Pixbuf
+import Paths_hsfm
+  (
+    getDataFileName
+  )
 
 
 -- |Icon type we use in our GUI.
@@ -41,10 +48,12 @@ getIcon :: GtkIcon    -- ^ icon we want
         -> IO Pixbuf
 getIcon icon itheme isize = do
   let iname = iconToStr icon
-  mpix <- iconThemeLoadIcon itheme iname isize IconLookupUseBuiltin
-  case mpix of
-    Just pix -> return pix
-    Nothing  -> pixbufNewFromFile ("data/Gtk/icons/" ++ iname)
+  hasicon <- iconThemeHasIcon itheme iname
+  case hasicon of
+    True -> fromJust <$> iconThemeLoadIcon itheme iname isize
+                                           IconLookupUseBuiltin
+    False -> pixbufNewFromFile =<< getDataFileName
+                                    ("data/Gtk/icons/" ++ iname ++ ".png")
   where
     iconToStr IFolder = "gtk-directory"
     iconToStr IFile   = "gtk-file"

src/HSFM/GUI/Gtk/MyGUI.hs

@@ -0,0 +1,120 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE RecordWildCards #-}
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.MyGUI where
+
+
+import Control.Concurrent.STM
+  (
+    newTVarIO
+  )
+import Graphics.UI.Gtk
+import HSFM.FileSystem.UtilTypes
+import HSFM.GUI.Gtk.Data
+import Paths_hsfm
+  (
+    getDataFileName
+  )
+
+
+
+
+    -------------------------
+    --[ Main Window Setup ]--
+    -------------------------
+
+
+-- |Set up the GUI. This only creates the permanent widgets.
+createMyGUI :: IO MyGUI
+createMyGUI = do
+  let settings' = MkFMSettings False True 24
+  settings <- newTVarIO settings'
+  operationBuffer <- newTVarIO None
+
+  builder <- builderNew
+  builderAddFromFile builder =<< getDataFileName "data/Gtk/builder.xml"
+
+  -- get the pre-defined gui widgets
+  rootWin           <- builderGetObject builder castToWindow
+                       "rootWin"
+  menubarFileQuit   <- builderGetObject builder castToImageMenuItem
+                       "menubarFileQuit"
+  menubarHelpAbout  <- builderGetObject builder castToImageMenuItem
+                      "menubarHelpAbout"
+  statusBar         <- builderGetObject builder castToStatusbar
+                       "statusBar"
+  clearStatusBar    <- builderGetObject builder castToButton
+                       "clearStatusBar"
+  fpropGrid         <- builderGetObject builder castToGrid
+                       "fpropGrid"
+  fpropFnEntry      <- builderGetObject builder castToEntry
+                       "fpropFnEntry"
+  fpropLocEntry     <- builderGetObject builder castToEntry
+                       "fpropLocEntry"
+  fpropTsEntry      <- builderGetObject builder castToEntry
+                       "fpropTsEntry"
+  fpropModEntry     <- builderGetObject builder castToEntry
+                       "fpropModEntry"
+  fpropAcEntry      <- builderGetObject builder castToEntry
+                       "fpropAcEntry"
+  fpropFTEntry      <- builderGetObject builder castToEntry
+                       "fpropFTEntry"
+  fpropPermEntry    <- builderGetObject builder castToEntry
+                       "fpropPermEntry"
+  fpropLDEntry      <- builderGetObject builder castToEntry
+                       "fpropLDEntry"
+  notebook1         <- builderGetObject builder castToNotebook
+                       "notebook1"
+  notebook2         <- builderGetObject builder castToNotebook
+                       "notebook2"
+  leftNbIcon        <- builderGetObject builder castToImage
+                       "leftNbIcon"
+  rightNbIcon       <- builderGetObject builder castToImage
+                       "rightNbIcon"
+  leftNbBtn         <- builderGetObject builder castToToggleButton
+                       "leftNbBtn"
+  rightNbBtn        <- builderGetObject builder castToToggleButton
+                       "rightNbBtn"
+
+
+  -- this is required so that hotkeys work as expected, because
+  -- we then can connect to signals from `viewBox` more reliably
+  widgetSetCanFocus notebook1 False
+  widgetSetCanFocus notebook2 False
+
+  -- notebook toggle buttons
+  buttonSetImage leftNbBtn leftNbIcon
+  buttonSetImage rightNbBtn rightNbIcon
+  widgetSetSensitive leftNbIcon False
+  widgetSetSensitive rightNbIcon False
+  toggleButtonSetActive leftNbBtn True
+  toggleButtonSetActive rightNbBtn True
+
+  -- construct the gui object
+  let menubar = MkMenuBar {..}
+  let fprop = MkFilePropertyGrid {..}
+  let mygui  = MkMyGUI {..}
+
+  -- sets the default icon
+  _ <- windowSetDefaultIconFromFile
+         =<< getDataFileName "data/Gtk/icons/hsfm.png"
+
+  return mygui

src/HSFM/GUI/Gtk/MyView.hs

@@ -0,0 +1,434 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE RecordWildCards #-}
+
+
+module HSFM.GUI.Gtk.MyView where
+
+
+import Control.Concurrent.MVar
+  (
+    newEmptyMVar
+  , putMVar
+  , tryTakeMVar
+  )
+import Control.Concurrent.STM
+  (
+    newTVarIO
+  , readTVarIO
+  )
+import Control.Monad
+  (
+    unless
+  , void
+  , when
+  )
+import Control.Monad.IO.Class
+  (
+    liftIO
+  )
+import Data.Foldable
+  (
+    for_
+  )
+import Data.Maybe
+  (
+    catMaybes
+  , fromJust
+  )
+import Data.String
+  (
+    fromString
+  )
+import Graphics.UI.Gtk
+import {-# SOURCE #-} HSFM.GUI.Gtk.Callbacks (setViewCallbacks)
+import qualified HPath as P
+import HSFM.FileSystem.FileType
+import HSFM.GUI.Glib.GlibString()
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.Icons
+import HSFM.GUI.Gtk.Utils
+import HSFM.History
+import HSFM.Utils.IO
+import Paths_hsfm
+  (
+    getDataFileName
+  )
+import Prelude hiding(readFile)
+import System.INotify
+  (
+    addWatch
+  , initINotify
+  , killINotify
+  , EventVariety(..)
+  )
+import System.IO.Error
+  (
+    catchIOError
+  , ioError
+  , isUserError
+  )
+import System.Posix.FilePath
+  (
+    hiddenFile
+  )
+
+
+
+-- |Creates a new tab with its own view and refreshes the view.
+newTab :: MyGUI -> Notebook -> IO FMView -> Item -> Int -> IO MyView
+newTab mygui nb iofmv item pos = do
+
+
+  -- create eventbox with label
+  label <- labelNewWithMnemonic
+    (maybe (P.fromAbs $ path item) P.fromRel $ P.basename $ path item)
+  ebox <- eventBoxNew
+  eventBoxSetVisibleWindow ebox False
+  containerAdd ebox label
+  widgetShowAll label
+
+  myview <- createMyView mygui nb iofmv
+  _ <- notebookInsertPageMenu (notebook myview) (viewBox myview)
+    ebox ebox pos
+
+  -- set initial history
+  let historySize = 5
+  putMVar (history myview)
+          (BrowsingHistory [] (path item) [] historySize)
+
+  notebookSetTabReorderable (notebook myview) (viewBox myview) True
+
+  catchIOError (refreshView mygui myview item) $ \e -> do
+    file <- pathToFile getFileInfo . fromJust . P.parseAbs . fromString
+      $ "/"
+    refreshView mygui myview file
+    labelSetText label (fromString "/" :: String)
+    unless (isUserError e) (ioError e)
+
+  -- close callback
+  _ <- ebox `on` buttonPressEvent $ do
+    eb <- eventButton
+    case eb of
+      MiddleButton -> liftIO $ do
+        n <- notebookGetNPages (notebook myview)
+        when (n > 1) $ void $ destroyView myview
+        return True
+      _ -> return False
+
+  return myview
+
+
+-- |Constructs the initial MyView object with a few dummy models.
+-- It also initializes the callbacks.
+createMyView :: MyGUI
+             -> Notebook
+             -> IO FMView
+             -> IO MyView
+createMyView mygui nb iofmv = do
+  inotify <- newEmptyMVar
+  history <- newEmptyMVar
+
+  builder <- builderNew
+  builderAddFromFile builder =<< getDataFileName "data/Gtk/builder.xml"
+
+  -- create dummy models, so we don't have to use MVar
+  rawModel <- newTVarIO =<< listStoreNew []
+  filteredModel <- newTVarIO =<< (\x -> treeModelFilterNew x [])
+                             =<< readTVarIO rawModel
+  sortedModel <- newTVarIO =<< treeModelSortNewWithModel
+                           =<< readTVarIO filteredModel
+  cwd <- newEmptyMVar
+  view' <- iofmv
+  view  <- newTVarIO view'
+
+  urlBar            <- builderGetObject builder castToEntry
+                       "urlBar"
+
+  backViewB         <- builderGetObject builder castToButton
+                       "backViewB"
+  upViewB           <- builderGetObject builder castToButton
+                       "upViewB"
+  forwardViewB      <- builderGetObject builder castToButton
+                       "forwardViewB"
+  homeViewB         <- builderGetObject builder castToButton
+                       "homeViewB"
+  refreshViewB      <- builderGetObject builder castToButton
+                       "refreshViewB"
+  scroll            <- builderGetObject builder castToScrolledWindow
+                       "mainScroll"
+  viewBox           <- builderGetObject builder castToBox
+                         "viewBox"
+
+  let notebook = nb
+  let myview = MkMyView {..}
+
+  -- set the bindings
+  setViewCallbacks mygui myview
+
+  -- add the treeview to the scroll container
+  let oview = fmViewToContainer view'
+  containerAdd scroll oview
+
+  widgetShowAll viewBox
+
+  return myview
+
+
+-- |Switch the existing view in `MyView` with the one that the
+-- io action returns.
+switchView :: MyGUI -> MyView -> IO FMView -> IO ()
+switchView mygui myview iofmv = do
+  cwd <- getCurrentDir myview
+
+  let nb = notebook myview
+
+  oldpage <- destroyView myview
+
+  -- create new view and tab page where the previous one was
+  nview <- newTab mygui nb iofmv cwd oldpage
+
+  page <- fromJust <$> notebookPageNum nb (viewBox nview)
+  notebookSetCurrentPage nb page
+
+  refreshView mygui nview cwd
+
+
+-- |Destroys the given view by disconnecting the watcher
+-- and destroying the active FMView container.
+--
+-- Everything that needs to be done in order to forget about a
+-- view needs to be done here.
+--
+-- Returns the page in the tab list this view corresponds to.
+destroyView :: MyView -> IO Int
+destroyView myview = do
+  -- disconnect watcher
+  mi <- tryTakeMVar (inotify myview)
+  for_ mi $ \i -> killINotify i
+
+  page <- fromJust <$> notebookPageNum (notebook myview) (viewBox myview)
+
+  -- destroy old view and tab page
+  view' <- readTVarIO $ view myview
+  widgetDestroy (fmViewToContainer view')
+  notebookRemovePage (notebook myview) page
+
+  return page
+
+
+-- |Createss an IconView.
+createIconView :: IO FMView
+createIconView = do
+  iconv <- iconViewNew
+  iconViewSetSelectionMode iconv SelectionMultiple
+  iconViewSetColumns iconv (-1)
+  iconViewSetSpacing iconv 2
+  iconViewSetMargin iconv 0
+  {- set iconv [ iconViewItemOrientation := OrientationHorizontal ] -}
+  {- set iconv [ iconViewOrientation := OrientationHorizontal ] -}
+
+  return $ FMIconView iconv
+
+
+-- |Creates a TreeView.
+createTreeView :: IO FMView
+createTreeView = do
+  -- create the final view
+  treeView <- treeViewNew
+  -- set selection mode
+  tvs <- treeViewGetSelection treeView
+  treeSelectionSetMode tvs SelectionMultiple
+
+  -- set drag and drop
+  tl <- targetListNew
+  atom <- atomNew ("HSFM" :: String)
+  targetListAdd tl atom [TargetSameApp] 0
+  treeViewEnableModelDragDest treeView tl [ActionCopy]
+  treeViewEnableModelDragSource treeView [Button1] tl [ActionCopy]
+
+  -- create final tree model columns
+  renderTxt <- cellRendererTextNew
+  renderPix <- cellRendererPixbufNew
+  let ct = cellText   :: (CellRendererTextClass cr) => Attr cr String
+      cp = cellPixbuf :: (CellRendererPixbufClass self) => Attr self Pixbuf
+
+  -- filename column
+  cF <- treeViewColumnNew
+  treeViewColumnSetTitle        cF ("Filename" :: String)
+  treeViewColumnSetResizable    cF True
+  treeViewColumnSetClickable    cF True
+  treeViewColumnSetSortColumnId cF 1
+  cellLayoutPackStart cF renderPix False
+  cellLayoutPackStart cF renderTxt True
+  _ <- treeViewAppendColumn treeView cF
+  cellLayoutAddColumnAttribute cF renderPix cp $ makeColumnIdPixbuf 0
+  cellLayoutAddColumnAttribute cF renderTxt ct $ makeColumnIdString 1
+
+  -- date column
+  cMD <- treeViewColumnNew
+  treeViewColumnSetTitle        cMD ("Date" :: String)
+  treeViewColumnSetResizable    cMD True
+  treeViewColumnSetClickable    cMD True
+  treeViewColumnSetSortColumnId cMD 2
+  cellLayoutPackStart cMD renderTxt True
+  _ <- treeViewAppendColumn treeView cMD
+  cellLayoutAddColumnAttribute cMD renderTxt ct $ makeColumnIdString 2
+
+  -- permissions column
+  cP <- treeViewColumnNew
+  treeViewColumnSetTitle        cP ("Permission" :: String)
+  treeViewColumnSetResizable    cP True
+  treeViewColumnSetClickable    cP True
+  treeViewColumnSetSortColumnId cP 3
+  cellLayoutPackStart cP renderTxt True
+  _ <- treeViewAppendColumn treeView cP
+  cellLayoutAddColumnAttribute cP renderTxt ct $ makeColumnIdString 3
+
+  return $ FMTreeView treeView
+
+
+-- |Refreshes the View based on the given directory.
+--
+-- Throws:
+--
+--   - `userError` on inappropriate type
+refreshView :: MyGUI
+             -> MyView
+             -> Item
+             -> IO ()
+refreshView mygui myview SymLink { sdest = Just d@Dir{} } =
+  refreshView mygui myview d
+refreshView mygui myview item@Dir{} = do
+  newRawModel  <- fileListStore item myview
+  writeTVarIO (rawModel myview) newRawModel
+
+  view' <- readTVarIO $ view myview
+
+  _ <- tryTakeMVar (cwd myview)
+  putMVar (cwd myview) item
+
+  -- get selected items
+  tps <- getSelectedTreePaths mygui myview
+  trs <- catMaybes <$> mapM (treeRowReferenceNew newRawModel) tps
+
+  constructView mygui myview
+
+  -- reselect selected items
+  -- TODO: not implemented for icon view yet
+  case view' of
+    FMTreeView treeView -> do
+      tvs <- treeViewGetSelection treeView
+      ntps <- mapM treeRowReferenceGetPath trs
+      mapM_ (treeSelectionSelectPath tvs) ntps
+    _ -> return ()
+refreshView _ _ _ = ioError $ userError "Inappropriate type!"
+
+
+-- |Constructs the visible View with the current underlying mutable models,
+-- which are retrieved from 'MyGUI'.
+--
+-- This sort of merges the components mygui and myview and fires up
+-- the actual models.
+constructView :: MyGUI
+              -> MyView
+              -> IO ()
+constructView mygui myview = do
+  settings' <- readTVarIO $ settings mygui
+
+  -- pix stuff
+  iT           <- iconThemeGetDefault
+  folderPix    <- getIcon IFolder iT (iconSize settings')
+  folderSymPix <- getSymlinkIcon IFolder iT (iconSize settings')
+  filePix      <- getIcon IFile iT (iconSize settings')
+  fileSymPix   <- getSymlinkIcon IFile iT (iconSize settings')
+  errorPix     <- getIcon IError iT (iconSize settings')
+  let dirtreePix Dir{}           = folderPix
+      dirtreePix FileLike{}      = filePix
+      dirtreePix DirSym{}        = folderSymPix
+      dirtreePix FileLikeSym{}   = fileSymPix
+      dirtreePix BrokenSymlink{} = errorPix
+      dirtreePix _               = errorPix
+
+
+  view' <- readTVarIO $ view myview
+
+  cdir <- getCurrentDir myview
+  let cdirp = path cdir
+
+  -- update urlBar
+  entrySetText (urlBar myview) (P.fromAbs cdirp)
+
+  rawModel' <- readTVarIO $ rawModel myview
+
+  -- filtering
+  filteredModel' <- treeModelFilterNew rawModel' []
+  writeTVarIO (filteredModel myview) filteredModel'
+  treeModelFilterSetVisibleFunc filteredModel' $ \iter -> do
+     hidden <- showHidden <$> readTVarIO (settings mygui)
+     item   <- treeModelGetRow rawModel' iter >>= (P.basename . path)
+     if hidden
+       then return True
+       else return . not . hiddenFile . P.fromRel $ item
+
+  -- sorting
+  sortedModel' <- treeModelSortNewWithModel filteredModel'
+  writeTVarIO (sortedModel myview) sortedModel'
+  treeSortableSetSortFunc sortedModel' 1 $ \iter1 iter2 -> do
+      cIter1 <- treeModelFilterConvertIterToChildIter filteredModel' iter1
+      cIter2 <- treeModelFilterConvertIterToChildIter filteredModel' iter2
+      item1  <- treeModelGetRow rawModel' cIter1
+      item2  <- treeModelGetRow rawModel' cIter2
+      return $ compare item1 item2
+  treeSortableSetSortColumnId sortedModel' 1 SortAscending
+
+  -- set values
+  treeModelSetColumn rawModel' (makeColumnIdPixbuf 0)
+                     dirtreePix
+  treeModelSetColumn rawModel' (makeColumnIdString 1)
+                     (P.toFilePath . fromJust . P.basename . path)
+  treeModelSetColumn rawModel' (makeColumnIdString 2)
+                     packModTime
+  treeModelSetColumn rawModel' (makeColumnIdString 3)
+                     packPermissions
+
+  -- update model of view
+  case view' of
+    FMTreeView treeView -> do
+      treeViewSetModel treeView (Just sortedModel')
+      treeViewSetRubberBanding treeView True
+    FMIconView iconView -> do
+      iconViewSetModel iconView (Just sortedModel')
+      iconViewSetPixbufColumn iconView
+                              (makeColumnIdPixbuf 0 :: ColumnId item Pixbuf)
+      iconViewSetTextColumn iconView
+                            (makeColumnIdString 1 :: ColumnId item String)
+
+  -- add watcher
+  mi <- tryTakeMVar (inotify myview)
+  for_ mi $ \i -> killINotify i
+  newi <- initINotify
+  _ <- addWatch
+         newi
+         [Move, MoveIn, MoveOut, MoveSelf, Create, Delete, DeleteSelf]
+         (P.fromAbs cdirp)
+         (\_ -> postGUIAsync $ refreshView mygui myview cdir)
+  putMVar (inotify myview) newi
+
+  return ()

src/HSFM/GUI/Gtk/Plugins.hs

@@ -0,0 +1,112 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+{-# OPTIONS_GHC -Wno-unused-imports #-}
+
+
+module HSFM.GUI.Gtk.Plugins where
+
+
+import Graphics.UI.Gtk
+import HPath
+import HSFM.FileSystem.FileType
+import HSFM.GUI.Gtk.Data
+import HSFM.GUI.Gtk.Settings
+import HSFM.GUI.Gtk.Utils
+import HSFM.Settings
+import Control.Monad
+  (
+    forM
+  , forM_
+  , void
+  )
+import System.Posix.Process.ByteString
+  (
+    executeFile
+  , forkProcess
+  )
+import Data.ByteString.UTF8
+  (
+    fromString
+  )
+import qualified Data.ByteString as BS
+
+
+
+
+
+    ---------------
+    --[ Plugins ]--
+    ---------------
+
+
+
+
+---- Global settings ----
+
+
+
+-- |Where to start inserting plugins.
+insertPos :: Int
+insertPos = 4
+
+
+-- |A list of plugins to add to the right-click menu at position
+-- `insertPos`.
+--
+-- The left part of the triple is a function that returns the menuitem.
+-- The middle part of the triple is a filter function that
+-- decides whether the item is shown.
+-- The right part of the triple is the callback, which is invoked
+-- when the menu item is clicked.
+--
+-- Plugins are added in order of this list.
+myplugins :: [(IO MenuItem
+              ,[Item] -> MyGUI -> MyView -> IO Bool
+              ,[Item] -> MyGUI -> MyView -> IO ())
+             ]
+myplugins = [(diffItem, diffFilter, diffCallback)
+            ]
+
+
+
+
+
+---- The plugins ----
+
+
+
+diffItem :: IO MenuItem
+diffItem = menuItemNewWithLabel "diff"
+
+diffFilter :: [Item] -> MyGUI -> MyView -> IO Bool
+diffFilter items _ _
+  | length items > 1 = return $ and $ fmap isFileC items
+  | otherwise        = return False
+
+diffCallback :: [Item] -> MyGUI -> MyView -> IO ()
+diffCallback items _ _ = void $
+  forkProcess $
+    executeFile
+      (fromString "meld")
+      True
+      ([fromString "--diff"] ++ fmap (fromAbs . path) items)
+      Nothing
+

src/HSFM/GUI/Gtk/Settings.hs

@@ -0,0 +1,128 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# LANGUAGE PatternSynonyms #-}
+
+
+module HSFM.GUI.Gtk.Settings where
+
+
+import Graphics.UI.Gtk
+
+
+
+
+    --------------------
+    --[ GUI Settings ]--
+    --------------------
+
+
+
+---- Hotkey settings ----
+
+
+pattern QuitModifier :: [Modifier]
+pattern QuitModifier <- [Control]
+
+pattern QuitKey :: String
+pattern QuitKey <- "q"
+
+
+pattern ShowHiddenModifier :: [Modifier]
+pattern ShowHiddenModifier <- [Control]
+
+pattern ShowHiddenKey :: String
+pattern ShowHiddenKey <- "h"
+
+
+pattern UpDirModifier :: [Modifier]
+pattern UpDirModifier <- [Alt]
+
+pattern UpDirKey :: String
+pattern UpDirKey <- "Up"
+
+
+pattern HistoryBackModifier :: [Modifier]
+pattern HistoryBackModifier <- [Alt]
+
+pattern HistoryBackKey :: String
+pattern HistoryBackKey <- "Left"
+
+
+pattern HistoryForwardModifier :: [Modifier]
+pattern HistoryForwardModifier <- [Alt]
+
+pattern HistoryForwardKey :: String
+pattern HistoryForwardKey <- "Right"
+
+
+pattern DeleteModifier :: [Modifier]
+pattern DeleteModifier <- []
+
+pattern DeleteKey :: String
+pattern DeleteKey <- "Delete"
+
+
+pattern OpenModifier :: [Modifier]
+pattern OpenModifier <- []
+
+pattern OpenKey :: String
+pattern OpenKey <- "Return"
+
+
+pattern CopyModifier :: [Modifier]
+pattern CopyModifier <- [Control]
+
+pattern CopyKey :: String
+pattern CopyKey <- "c"
+
+
+pattern MoveModifier :: [Modifier]
+pattern MoveModifier <- [Control]
+
+pattern MoveKey :: String
+pattern MoveKey <- "x"
+
+
+pattern PasteModifier :: [Modifier]
+pattern PasteModifier <- [Control]
+
+pattern PasteKey :: String
+pattern PasteKey <- "v"
+
+
+pattern NewTabModifier :: [Modifier]
+pattern NewTabModifier <- [Control]
+
+pattern NewTabKey :: String
+pattern NewTabKey <- "t"
+
+
+pattern CloseTabModifier :: [Modifier]
+pattern CloseTabModifier <- [Control]
+
+pattern CloseTabKey :: String
+pattern CloseTabKey <- "w"
+
+
+pattern OpenTerminalModifier :: [Modifier]
+pattern OpenTerminalModifier <- []
+
+pattern OpenTerminalKey :: String
+pattern OpenTerminalKey <- "F4"
+

src/HSFM/GUI/Gtk/Utils.hs

@@ -0,0 +1,154 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.GUI.Gtk.Utils where
+
+
+import Control.Concurrent.MVar
+  (
+    readMVar
+  )
+import Control.Concurrent.STM
+  (
+    readTVarIO
+  )
+import Data.Maybe
+  (
+    catMaybes
+  , fromJust
+  )
+import Data.Traversable
+  (
+    forM
+  )
+import Graphics.UI.Gtk
+import HSFM.FileSystem.FileType
+import HSFM.GUI.Gtk.Data
+import Prelude hiding(getContents)
+
+
+
+    -----------------
+    --[ Utilities ]--
+    -----------------
+
+
+getSelectedTreePaths :: MyGUI -> MyView -> IO [TreePath]
+getSelectedTreePaths _ myview = do
+  view' <- readTVarIO $ view myview
+  case view' of
+    FMTreeView treeView -> do
+      tvs   <- treeViewGetSelection treeView
+      treeSelectionGetSelectedRows tvs
+    FMIconView iconView ->
+      iconViewGetSelectedItems iconView
+
+
+-- |Gets the currently selected item of the treeView, if any.
+getSelectedItems :: MyGUI
+                 -> MyView
+                 -> IO [Item]
+getSelectedItems mygui myview = do
+  tps   <- getSelectedTreePaths mygui myview
+  catMaybes <$> mapM (rawPathToItem myview) tps
+
+
+-- |Carry out an action on the currently selected item.
+--
+-- If there is no item selected, does nothing.
+withItems :: MyGUI
+          -> MyView
+          -> (   [Item]
+              -> MyGUI
+              -> MyView
+              -> IO a) -- ^ action to carry out
+          -> IO a
+withItems mygui myview io = do
+  items <- getSelectedItems mygui myview
+  io items mygui myview
+
+
+-- |Create the 'ListStore' of files/directories from the current directory.
+-- This is the function which maps the Data.DirTree data structures
+-- into the GTK+ data structures.
+fileListStore :: Item  -- ^ current dir
+              -> MyView
+              -> IO (ListStore Item)
+fileListStore dt _ = do
+  cs <- getContents getFileInfo dt
+  listStoreNew cs
+
+
+-- |Currently unsafe. This is used to obtain any item, which will
+-- fail if there is none.
+getFirstItem :: MyView
+             -> IO Item
+getFirstItem myview = do
+  rawModel' <- readTVarIO $ rawModel myview
+  iter      <- fromJust <$> treeModelGetIterFirst rawModel'
+  treeModelGetRow rawModel' iter
+
+
+-- |Reads the current directory from MyView.
+--
+-- This reads the MVar and may block the main thread if it's
+-- empty.
+getCurrentDir :: MyView
+              -> IO Item
+getCurrentDir myview = readMVar (cwd myview)
+
+
+-- |Push a message to the status bar.
+pushStatusBar :: MyGUI -> String -> IO (ContextId, MessageId)
+pushStatusBar mygui str = do
+  let sb = statusBar mygui
+  cid <- statusbarGetContextId sb "FM Status"
+  mid <- statusbarPush sb cid str
+  return (cid, mid)
+
+
+-- |Pop a message from the status bar.
+popStatusbar :: MyGUI -> IO ()
+popStatusbar mygui = do
+  let sb = statusBar mygui
+  cid <- statusbarGetContextId sb "FM Status"
+  statusbarPop sb cid
+
+
+-- |Turn a path on the rawModel into a path that we can
+-- use at the outermost model layer.
+rawPathToIter :: MyView -> TreePath -> IO (Maybe TreeIter)
+rawPathToIter myview tp = do
+  fmodel <- readTVarIO (filteredModel myview)
+  smodel <- readTVarIO (sortedModel myview)
+  msiter <- treeModelGetIter smodel tp
+  forM msiter $ \siter -> do
+    cIter <- treeModelSortConvertIterToChildIter smodel siter
+    treeModelFilterConvertIterToChildIter fmodel cIter
+
+
+-- |Turn a path on the rawModel into the corresponding item
+-- that we can use at the outermost model layer.
+rawPathToItem :: MyView -> TreePath -> IO (Maybe Item)
+rawPathToItem myview tp = do
+  rawModel' <- readTVarIO $ rawModel myview
+  miter     <- rawPathToIter myview tp
+  forM miter $ \iter -> treeModelGetRow rawModel' iter
+

src/HSFM/History.hs

@@ -0,0 +1,61 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+module HSFM.History where
+
+
+import HPath
+  (
+    Abs
+  , Path
+  )
+
+
+
+-- |Browsing history. For `forwardHistory` and `backwardsHistory`
+-- the first item is the most recent one.
+data BrowsingHistory = BrowsingHistory {
+    backwardsHistory :: [Path Abs]
+  , currentDir       :: Path Abs
+  , forwardHistory   :: [Path Abs]
+  , maxSize          :: Int
+}
+
+
+-- |This is meant to be called after e.g. a new path is entered
+-- (not navigated to via the history) and the history needs updating.
+historyNewPath :: Path Abs -> BrowsingHistory -> BrowsingHistory
+historyNewPath p (BrowsingHistory b cd _ s) =
+  BrowsingHistory (take s $ cd:b) p [] s
+
+
+-- |Go back one step in the history.
+historyBack :: BrowsingHistory -> BrowsingHistory
+historyBack bh@(BrowsingHistory [] _ _ _)   = bh
+historyBack (BrowsingHistory (b:bs) cd fs s) =
+  BrowsingHistory bs b (take s $ cd:fs) s
+
+
+-- |Go forward one step in the history.
+historyForward :: BrowsingHistory -> BrowsingHistory
+historyForward bh@(BrowsingHistory _ _ [] _) = bh
+historyForward (BrowsingHistory bs cd (f:fs) s) =
+  BrowsingHistory (take s $ cd:bs) f fs s
+

src/HSFM/Settings.hs

@@ -0,0 +1,67 @@
+{--
+HSFM, a filemanager written in Haskell.
+Copyright (C) 2016 Julian Ospald
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+version 2 as published by the Free Software Foundation.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+--}
+
+{-# OPTIONS_HADDOCK ignore-exports #-}
+
+
+module HSFM.Settings where
+
+
+import Data.ByteString
+  (
+    ByteString
+  )
+import qualified Data.ByteString.UTF8 as BU
+import Data.Maybe
+import System.Posix.Env.ByteString
+import System.Posix.Process.ByteString
+
+
+
+    -----------------------
+    --[ Common Settings ]--
+    -----------------------
+
+
+
+
+---- Command settings ----
+
+
+
+-- |The terminal command. This should call `executeFile` in the end
+-- with the appropriate arguments.
+terminalCommand :: ByteString  -- ^ current directory of the FM
+                -> IO a
+terminalCommand cwd =
+  executeFile                   -- executes the given command
+    (BU.fromString "sakura")    -- the terminal command
+    True                        -- whether to search PATH
+    [BU.fromString "-d", cwd]   -- arguments for the command
+    Nothing                     -- optional custom environment: `Just [(String, String)]`
+
+
+-- |The home directory. If you want to set it explicitly, you might
+-- want to do:
+--
+-- @
+-- home = return "\/home\/wurst"
+-- @
+home :: IO ByteString
+home = fromMaybe <$> return (BU.fromString "/") <*> getEnv (BU.fromString "HOME")
+

src/HSFM/Utils/IO.hs

@@ -1,6 +1,6 @@
 {--
 HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
+Copyright (C) 2016 Julian Ospald
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
@@ -18,8 +18,9 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 {-# OPTIONS_HADDOCK ignore-exports #-}
 
+
 -- |Random and general IO utilities.
-module IO.Utils where
+module HSFM.Utils.IO where
 
 
 import Control.Concurrent.STM
@@ -32,24 +33,14 @@ import Control.Concurrent.STM.TVar
   , modifyTVar
   , TVar
   )
-import Control.Monad
-  (
-    when
-  , unless
-  )
 
 
+-- |Atomically write a TVar.
 writeTVarIO :: TVar a -> a -> IO ()
 writeTVarIO tvar val = atomically $ writeTVar tvar val
 
 
+-- |Atomically modify a TVar.
 modifyTVarIO :: TVar a -> (a -> a) -> IO ()
 modifyTVarIO tvar f = atomically $ modifyTVar tvar f
 
-
-whenM :: Monad m => m Bool -> m () -> m ()
-whenM mb a = mb >>= (`when` a)
-
-
-unlessM :: Monad m => m Bool -> m () -> m ()
-unlessM mb a = mb >>= (`unless` a)

src/HSFM/Utils/MyPrelude.hs

@@ -1,6 +1,6 @@
 {--
 HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
+Copyright (C) 2016 Julian Ospald
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
@@ -16,12 +16,17 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 --}
 
-module MyPrelude where
+module HSFM.Utils.MyPrelude where
 
 
 import Data.List
 
 
 
+-- |Turns any list into a list of the same length with the values
+-- being the indices.
+-- E.g.: "abdasd" -> [0,1,2,3,4,5]
 listIndices :: [a] -> [Int]
 listIndices = findIndices (const True)
+
+

src/IO/Error.hs

@@ -1,127 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-{-# LANGUAGE DeriveDataTypeable #-}
-
--- |Provides error handling.
-module IO.Error where
-
-
-import Control.Applicative
-  (
-    (<$>)
-  )
-import Control.Exception
-import Control.Monad
-  (
-    unless
-  , void
-  , when
-  )
-import Data.List
-  (
-    isPrefixOf
-  )
-import Data.Typeable
-import IO.Utils
-import System.Directory
-  (
-    doesDirectoryExist
-  , doesFileExist
-  )
-import System.FilePath
-  (
-    equalFilePath
-  , isAbsolute
-  , takeFileName
-  )
-
-import qualified System.Posix.Files as PF
-
-
-data FmIOException = FileDoesNotExist String
-                   | DirDoesNotExist String
-                   | PathNotAbsolute String
-                   | FileNotExecutable String
-                   | SameFile String String
-                   | NotAFile String
-                   | NotADir String
-                   | DestinationInSource String String
-                   | FileDoesExist String
-                   | DirDoesExist String
-                   | IsSymlink String
-  deriving (Show, Typeable)
-
-
-instance Exception FmIOException
-
-
--- Throws an exception if the filepath is not absolute
--- or the file does not exist.
-fileSanityThrow :: FilePath -> IO ()
-fileSanityThrow fp = throwNotAbsolute fp >> throwFileDoesNotExist fp
-
-
--- Throws an exception if the filepath is not absolute
--- or the dir does not exist.
-dirSanityThrow :: FilePath -> IO ()
-dirSanityThrow fp = throwNotAbsolute fp >> throwDirDoesNotExist fp
-
-
-throwNotAbsolute :: FilePath -> IO ()
-throwNotAbsolute fp = unless (isAbsolute fp) (throw $ PathNotAbsolute fp)
-
-
-throwFileDoesExist :: FilePath -> IO ()
-throwFileDoesExist fp =
-  whenM (doesFileExist fp) (throw $ FileDoesExist fp)
-
-
-throwDirDoesExist :: FilePath -> IO ()
-throwDirDoesExist fp =
-  whenM (doesDirectoryExist fp) (throw $ DirDoesExist fp)
-
-
-throwDirDoesNotExist :: FilePath -> IO ()
-throwDirDoesNotExist fp =
-  unlessM (doesDirectoryExist fp) (throw $ DirDoesNotExist fp)
-
-
-throwFileDoesNotExist :: FilePath -> IO ()
-throwFileDoesNotExist fp =
-  unlessM (doesFileExist fp) (throw $ FileDoesNotExist fp)
-
-
-throwSameFile :: FilePath -- ^ should be canonicalized
-              -> FilePath -- ^ should be canonicalized
-              -> IO ()
-throwSameFile fp1 fp2 = when (equalFilePath fp1 fp2) (throw $ SameFile fp1 fp2)
-
-
-throwDestinationInSource :: FilePath -- ^ should be canonicalized
-                         -> FilePath -- ^ should be canonicalized
-                         -> IO ()
-throwDestinationInSource source dest =
-  when (source `isPrefixOf` dest) (throw $ DestinationInSource dest source)
-
-
-throwIsSymlink :: FilePath -> IO ()
-throwIsSymlink fp =
-  whenM (PF.isSymbolicLink <$> PF.getSymbolicLinkStatus fp)
-        (throw $ IsSymlink fp)

src/IO/File.hs

@@ -1,442 +0,0 @@
-{--
-HSFM, a filemanager written in Haskell.
-Copyright (C) 2015 Julian Ospald
-
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License
-version 2 as published by the Free Software Foundation.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
---}
-
-{-# OPTIONS_HADDOCK ignore-exports #-}
-
--- |This module provides all the atomic IO related file operations like
--- copy, delete, move and so on. It operates only on FilePaths and reads
--- all necessary file information manually in order to stay atomic and not
--- rely on the state of passed objects.
---
--- It would be nicer to pass states around, but the filesystem state changes
--- too quickly and cannot be relied upon. Lazy implementations of filesystem
--- trees have been tried as well, but they can introduce subtle bugs.
-module IO.File where
-
-
-import Control.Applicative
-  (
-    (<$>)
-  )
-import Control.Exception
-  (
-    handle
-  , throw
-  , SomeException(..)
-  )
-import Control.Monad
-  (
-    unless
-  , void
-  )
-import Data.DirTree
-import Data.Foldable
-  (
-    for_
-  )
-import IO.Error
-import IO.Utils
-import System.Directory
-  (
-    doesDirectoryExist
-  , doesFileExist
-  , removeDirectoryRecursive
-  )
-import System.FilePath
-  (
-    equalFilePath
-  , isAbsolute
-  , takeFileName
-  , takeDirectory
-  , (</>)
-  )
-import System.Posix.Directory
-  (
-    createDirectory
-  , removeDirectory
-  )
-import System.Posix.Files
-  (
-    createSymbolicLink
-  , readSymbolicLink
-  , fileAccess
-  , getFileStatus
-  , groupExecuteMode
-  , groupReadMode
-  , groupWriteMode
-  , otherExecuteMode
-  , otherReadMode
-  , otherWriteMode
-  , ownerModes
-  , ownerReadMode
-  , ownerWriteMode
-  , rename
-  , touchFile
-  , unionFileModes
-  , removeLink
-  )
-import System.Posix.IO
-  (
-    closeFd
-  , createFile
-  )
-import System.Posix.Types
-  (
-    FileMode
-  )
-import System.Process
-  (
-    spawnProcess
-  , ProcessHandle
-  )
-
-import qualified System.Directory as SD
-
-import qualified System.Posix.Files as PF
-
-
--- TODO: file operations should be threaded and not block the UI
-
-
--- |Data type describing an actual file operation that can be
--- carried out via `doFile`. Useful to build up a list of operations
--- or delay operations.
-data FileOperation = FCopy    Copy
-                   | FMove    Move
-                   | FDelete  (AnchoredFile FileInfo)
-                   | FOpen    (AnchoredFile FileInfo)
-                   | FExecute (AnchoredFile FileInfo) [String]
-                   | None
-
-
--- |Data type describing partial or complete file copy operation.
--- CC stands for a complete operation and can be used for `runFileOp`.
-data Copy = CP1 (AnchoredFile FileInfo)
-          | CP2 (AnchoredFile FileInfo)
-                (AnchoredFile FileInfo)
-          | CC  (AnchoredFile FileInfo)
-                (AnchoredFile FileInfo)
-                DirCopyMode
-
-
--- |Data type describing partial or complete file move operation.
--- MC stands for a complete operation and can be used for `runFileOp`.
-data Move = MP1 (AnchoredFile FileInfo)
-          | MC  (AnchoredFile FileInfo)
-                (AnchoredFile FileInfo)
-
-
--- |Directory copy modes.
-data DirCopyMode = Strict  -- ^ fail if the target directory already exists
-                 | Merge   -- ^ overwrite files if necessary
-                 | Replace -- ^ remove target directory before copying
-
-
--- |Run a given FileOperation. If the FileOperation is partial, it will
--- be returned.
-runFileOp :: FileOperation -> IO (Maybe FileOperation)
-runFileOp (FCopy (CC from to cm)) = easyCopy cm from to >> return Nothing
-runFileOp (FCopy fo)              = return              $ Just $ FCopy fo
-runFileOp (FMove (MC from to))    = moveFile from to    >> return Nothing
-runFileOp (FMove fo)              = return              $ Just $ FMove fo
-runFileOp (FDelete fp)            = easyDelete fp       >> return Nothing
-runFileOp (FOpen fp)              = openFile fp         >> return Nothing
-runFileOp (FExecute fp args)      = executeFile fp args >> return Nothing
-runFileOp _                       = return Nothing
-
-
-
-    --------------------
-    --[ File Copying ]--
-    --------------------
-
-
--- TODO: allow renaming
--- |Copies a directory to the given destination with the specified
--- `DirCopyMode`. Excludes symlinks.
-copyDir :: DirCopyMode
-        -> AnchoredFile FileInfo  -- ^ source dir
-        -> AnchoredFile FileInfo  -- ^ destination dir
-        -> IO ()
-copyDir cm (_ :/ SymLink {}) _ = return ()
-copyDir cm from@(_ :/ Dir fromn _)
-             to@(_ :/ Dir {})
-  = do
-    let fromp    = fullPath from
-        top      = fullPath to
-        destdirp = top </> fromn
-    throwDestinationInSource fromp destdirp
-    throwSameFile fromp destdirp
-
-    createDestdir destdirp
-    destdir <- Data.DirTree.readFile destdirp
-
-    contents <- readDirectory' (fullPath from)
-
-    for_ contents $ \f ->
-      case f of
-        (_ :/ SymLink {})  -> recreateSymlink f destdir
-        (_ :/ Dir {}) -> copyDir cm f destdir
-        (_ :/ RegFile {}) -> copyFileToDir f destdir
-        _                 -> return ()
-  where
-    createDestdir destdir =
-      case cm of
-        Merge   ->
-          unlessM (doesDirectoryExist destdir)
-                  (createDirectory destdir newDirPerms)
-        Strict  -> do
-          throwDirDoesExist destdir
-          createDirectory destdir newDirPerms
-        Replace -> do
-          whenM (doesDirectoryExist destdir) (removeDirectoryRecursive destdir)
-          createDirectory destdir newDirPerms
-    recreateSymlink' f destdir = do
-      let destfilep = fullPath destdir </> (name . file $ f)
-      destfile <- Data.DirTree.readFile destfilep
-
-      _ <- case cm of
-        -- delete old file/dir to be able to create symlink
-        Merge -> easyDelete destfile
-        _     -> return ()
-
-      recreateSymlink f destdir
-copyDir _ _ _ = return ()
-
-
--- |Recreate a symlink.
-recreateSymlink :: AnchoredFile FileInfo  -- ^ the old symlink file
-                -> AnchoredFile FileInfo  -- ^ destination dir of the
-                                                   --   new symlink file
-                -> IO ()
-recreateSymlink symf@(_ :/ SymLink {})
-                symdest@(_ :/ Dir {})
-  = do
-    symname <- readSymbolicLink (fullPath symf)
-    createSymbolicLink symname (fullPath symdest </> (name . file $ symf))
-recreateSymlink _ _ = return ()
-
-
--- |Copies the given file to the given file destination.
--- Excludes symlinks.
-copyFile :: AnchoredFile FileInfo  -- ^ source file
-         -> AnchoredFile FileInfo  -- ^ destination file
-         -> IO ()
-copyFile (_ :/ SymLink {}) _ = return ()
-copyFile from@(_ :/ RegFile {}) to@(_ :/ RegFile {}) = do
-  let from' = fullPath from
-      to'   = fullPath to
-  throwSameFile from' to'
-  SD.copyFile from' to'
-copyFile _ _ = return ()
-
-
--- |Copies the given file to the given dir with the same filename.
--- Excludes symlinks.
-copyFileToDir :: AnchoredFile FileInfo
-              -> AnchoredFile FileInfo
-              -> IO ()
-copyFileToDir (_ :/ SymLink {}) _ = return ()
-copyFileToDir from@(_ :/ RegFile fn _)
-                to@(_ :/ Dir {}) =
-  do
-    let from' = fullPath from
-        to'   = fullPath to </> fn
-    SD.copyFile from' to'
-copyFileToDir _ _ = return ()
-
-
--- |Copies a file, directory or symlink. In case of a symlink, it is just
--- recreated, even if it points to a directory.
-easyCopy :: DirCopyMode
-         -> AnchoredFile FileInfo
-         -> AnchoredFile FileInfo
-         -> IO ()
-easyCopy _ from@(_ :/ SymLink {}) to@(_ :/ Dir {}) = recreateSymlink from to
-easyCopy _ from@(_ :/ RegFile fn _)
-             to@(_ :/ Dir {})
-  = copyFileToDir from to
-easyCopy _ from@(_ :/ RegFile fn _)
-             to@(_ :/ RegFile {})
-  = copyFile from to
-easyCopy cm from@(_ :/ Dir fn _)
-              to@(_ :/ Dir {})
-  = copyDir cm from to
-easyCopy _ _ _ = return ()
-
-
-
-
-
-    ---------------------
-    --[ File Deletion ]--
-    ---------------------
-
-
--- |Deletes a symlink, which can either point to a file or directory.
-deleteSymlink :: AnchoredFile FileInfo -> IO ()
-deleteSymlink f@(_ :/ SymLink {})
-  = removeLink (fullPath f)
-deleteSymlink _
-  = return ()
-
-
--- |Deletes the given file, never symlinks.
-deleteFile :: AnchoredFile FileInfo -> IO ()
-deleteFile   (_ :/ SymLink {}) = return ()
-deleteFile f@(_ :/ RegFile {})
-  = removeLink (fullPath f)
-deleteFile _
-  = return ()
-
-
--- |Deletes the given directory, never symlinks.
-deleteDir :: AnchoredFile FileInfo -> IO ()
-deleteDir   (_ :/ SymLink {}) = return ()
-deleteDir f@(_ :/ Dir {})
-  = removeDirectory (fullPath f)
-deleteDir _ = return ()
-
-
--- |Deletes the given directory recursively, never symlinks.
-deleteDirRecursive :: AnchoredFile FileInfo -> IO ()
-deleteDirRecursive   (_ :/ SymLink {}) = return ()
-deleteDirRecursive f@(_ :/ Dir {})
-  = removeDirectoryRecursive (fullPath f)
-deleteDirRecursive _ = return ()
-
-
--- |Deletes a file, directory or symlink, whatever it may be.
--- In case of directory, performs recursive deletion. In case of
--- a symlink, the symlink file is deleted.
-easyDelete :: AnchoredFile FileInfo -> IO ()
-easyDelete f@(_ :/ SymLink {}) = deleteSymlink f
-easyDelete f@(_ :/ RegFile {})
-  = deleteFile f
-easyDelete f@(_ :/ Dir {})
-  = deleteDirRecursive f
-easyDelete _
-  = return ()
-
-
-
-
-    --------------------
-    --[ File Opening ]--
-    --------------------
-
-
--- |Opens a file appropriately by invoking xdg-open.
-openFile :: AnchoredFile a
-         -> IO ProcessHandle
-openFile f = spawnProcess "xdg-open" [fullPath f]
-
-
--- |Executes a program with the given arguments.
-executeFile :: AnchoredFile FileInfo  -- ^ program
-            -> [String]               -- ^ arguments
-            -> IO (Maybe ProcessHandle)
-executeFile prog@(_ :/ RegFile {}) args
-  = Just <$> spawnProcess (fullPath prog) args
-executeFile _ _      = return Nothing
-
-
-
-
-    ---------------------
-    --[ File Creation ]--
-    ---------------------
-
-
-createFile :: AnchoredFile FileInfo -> FileName -> IO ()
-createFile (ADirOrSym td) (ValFN fn) = do
-  let fullp = fullPath td </> fn
-  throwFileDoesExist fullp
-  fd <- System.Posix.IO.createFile fullp newFilePerms
-  closeFd fd
-createFile _ _ = return ()
-
-
-createDir :: AnchoredFile FileInfo -> FileName -> IO ()
-createDir (ADirOrSym td) (ValFN fn) = do
-  let fullp = fullPath td </> fn
-  throwDirDoesExist fullp
-  createDirectory fullp newFilePerms
-createDir _ _ = return ()
-
-
-
-
-    ----------------------------
-    --[ File Renaming/Moving ]--
-    ----------------------------
-
-
-renameFile :: AnchoredFile FileInfo -> FileName -> IO ()
-renameFile (_ :/ Failed {}) _ = return ()
-renameFile af (ValFN fn) = do
-  let fromf = fullPath af
-      tof   = anchor af </> fn
-  throwFileDoesExist tof
-  throwSameFile fromf tof
-  rename fromf tof
-renameFile _ _ = return ()
-
-
--- |Move a given file to the given target directory.
-moveFile :: AnchoredFile FileInfo -- ^ file to move
-         -> AnchoredFile FileInfo -- ^ base target directory
-         -> IO ()
-moveFile from to@(_ :/ Dir {}) = do
-  let from' = fullPath from
-      to'   = fullPath to </> (name . file $ from)
-  throwFileDoesExist to'
-  throwSameFile from' to'
-  handle (\(SomeException e) -> do
-    easyCopy Strict from to
-    easyDelete from
-    ) $ rename from' to'
-moveFile _ _ = return ()
-
-
-
-
-
-    -----------------------
-    --[ File Permissions]--
-    -----------------------
-
-
-newFilePerms :: FileMode
-newFilePerms
-  =                  ownerWriteMode
-    `unionFileModes` ownerReadMode
-    `unionFileModes` groupWriteMode
-    `unionFileModes` groupReadMode
-    `unionFileModes` otherWriteMode
-    `unionFileModes` otherReadMode
-
-
-newDirPerms :: FileMode
-newDirPerms
-  =                  ownerModes
-    `unionFileModes` groupExecuteMode
-    `unionFileModes` groupReadMode
-    `unionFileModes` otherExecuteMode
-    `unionFileModes` otherReadMode
-

update-gh-pages.sh

@@ -0,0 +1,52 @@
+#!/bin/bash
+
+SOURCE_BRANCH="master"
+TARGET_BRANCH="gh-pages"
+REPO="https://${GH_TOKEN}@github.com/hasufell/hsfm"
+DOC_LOCATION="/dist/doc/html/hsfm/hsfm-gtk"
+
+
+# Pull requests and commits to other branches shouldn't try to deploy,
+# just build to verify
+if [ "$TRAVIS_PULL_REQUEST" != "false" -o "$TRAVIS_BRANCH" != "$SOURCE_BRANCH" ]; then
+    echo "Skipping docs deploy."
+    exit 0
+fi
+
+
+cd "$HOME"
+git config --global user.email "travis@travis-ci.org"
+git config --global user.name "travis-ci"
+git clone --branch=${TARGET_BRANCH} ${REPO} ${TARGET_BRANCH} || exit 1
+
+# docs
+cd ${TARGET_BRANCH} || exit 1
+echo "Removing old docs."
+rm -rf *
+echo "Adding new docs."
+cp -rf "${TRAVIS_BUILD_DIR}${DOC_LOCATION}"/* . || exit 1
+
+# If there are no changes to the compiled out (e.g. this is a README update)
+# then just bail.
+if [ -z "`git diff --exit-code`" ]; then
+    echo "No changes to the output on this push; exiting."
+    exit 0
+fi
+
+git add -- .
+
+if [[ -e ./index.html ]] ; then
+	echo "Commiting docs."
+	git commit -m "Lastest docs updated
+
+travis build: $TRAVIS_BUILD_NUMBER
+commit: $TRAVIS_COMMIT
+auto-pushed to gh-pages"
+
+	git push origin $TARGET_BRANCH
+	echo "Published docs to gh-pages."
+else
+	echo "Error: docs are empty."
+	exit 1
+fi
+

update-index-state.sh

@@ -0,0 +1,66 @@
+#!/usr/bin/env bash
+
+set -eu
+
+status_message() {
+    printf "\\033[0;32m%s\\033[0m\\n" "$1"
+}
+
+error_message() {
+    printf "\\033[0;31m%s\\033[0m\\n" "$1"
+}
+
+SCRIPTPATH="$( cd "$(dirname "$0")" ; pwd -P )"
+CACHE_LOCATION="${HOME}/.cabal/packages/hackage.haskell.org/01-index.cache"
+
+if [ ! -f "${CACHE_LOCATION}" ] ; then
+	error_message "${CACHE_LOCATION} does not exist, did you run 'cabal update'?"
+	exit 1
+fi
+
+if [ ! -f "${SCRIPTPATH}/cabal.project" ] ; then
+	error_message "Could not find ${SCRIPTPATH}/cabal.project, skipping index state update."
+	exit 3
+fi
+
+cabal v2-update
+
+arch=$(getconf LONG_BIT)
+
+case "${arch}" in
+32)
+	byte_size=4
+	magic_word="CABA1002"
+    ;;
+64)
+	byte_size=8
+	magic_word="00000000CABA1002"
+    ;;
+*)
+	error_message "Unknown architecture (long bit): ${arch}"
+	exit 2
+    ;;
+esac
+
+# This is the logic to parse the binary format of 01-index.cache.
+# The first word is a magic 'caba1002', the second one is the timestamp in unix epoch.
+# Better than copying the cabal-install source code.
+if [ "$(xxd -u -p -l${byte_size} -s 0 "${CACHE_LOCATION}")" != "${magic_word}" ] ; then
+	error_message "Magic word does not match!"
+	exit 4
+fi
+cache_timestamp=$(echo "ibase=16;obase=A;$(xxd -u -p -l${byte_size} -s ${byte_size} "${CACHE_LOCATION}")" | bc)
+
+# If we got junk from the binary file, this should fail.
+cache_date=$(date --utc --date "@${cache_timestamp}" "+%FT%TZ")
+
+
+status_message "Updating index state in ${SCRIPTPATH}/cabal.project"
+
+if grep -q "^index-state: .*" "${SCRIPTPATH}/cabal.project" ; then
+	awk '/index-state:/ {gsub(/.*/, "index-state: '${cache_date}'")}; { print }' "${SCRIPTPATH}/cabal.project" > "${SCRIPTPATH}/cabal.project.tmp"
+	mv "${SCRIPTPATH}/cabal.project.tmp" "${SCRIPTPATH}/cabal.project"
+else
+	printf "index-state: %s\n" "${cache_date}" >> "${SCRIPTPATH}/cabal.project"
+fi
+