GTK: add IconView and refactor the modules

data/Gtk/builder.xml

@@ -99,6 +99,11 @@
     <property name="can_focus">False</property>
     <property name="stock">gtk-cancel</property>
   </object>
+  <object class="GtkImage" id="image4">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="stock">gtk-zoom-fit</property>
+  </object>
   <object class="GtkApplicationWindow" id="rootWin">
     <property name="can_focus">False</property>
     <child>
@@ -229,8 +234,31 @@
               <object class="GtkMenuItem" id="menubarView">
                 <property name="visible">True</property>
                 <property name="can_focus">False</property>
-                <property name="label" translatable="yes">_View</property>
-                <property name="use_underline">True</property>
+                <property name="label" translatable="yes">View</property>
+                <child type="submenu">
+                  <object class="GtkMenu" id="menu5">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <child>
+                      <object class="GtkImageMenuItem" id="menubarViewTree">
+                        <property name="label">Tree View</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="image">image4</property>
+                        <property name="use_stock">False</property>
+                      </object>
+                    </child>
+                    <child>
+                      <object class="GtkImageMenuItem" id="menubarViewIcon">
+                        <property name="label">Icon view</property>
+                        <property name="visible">True</property>
+                        <property name="can_focus">False</property>
+                        <property name="image">image5</property>
+                        <property name="use_stock">False</property>
+                      </object>
+                    </child>
+                  </object>
+                </child>
               </object>
             </child>
             <child>
@@ -280,7 +308,7 @@
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="refreshView">
+              <object class="GtkButton" id="refreshViewB">
                 <property name="label">gtk-refresh</property>
                 <property name="visible">True</property>
                 <property name="can_focus">True</property>
@@ -368,4 +396,9 @@
       </object>
     </child>
   </object>
+  <object class="GtkImage" id="image5">
+    <property name="visible">True</property>
+    <property name="can_focus">False</property>
+    <property name="stock">gtk-zoom-fit</property>
+  </object>
 </interface>

hsfm.cabal

@@ -58,6 +58,8 @@ executable hsfm-gtk
                        GUI.Gtk.Data
                        GUI.Gtk.Dialogs
                        GUI.Gtk.Icons
+                       GUI.Gtk.MyGUI
+                       GUI.Gtk.MyView
                        GUI.Gtk.Utils
                        MyPrelude
 

src/GUI/Gtk.hs

@@ -20,74 +20,11 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
 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 Paths_hsfm
-  (
-    getDataFileName
-  )
+import GUI.Gtk.MyGUI
+import GUI.Gtk.MyView
 import Safe
   (
     headDef
@@ -96,28 +33,6 @@ 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 ()
@@ -126,172 +41,14 @@ main = do
 
   args <- getArgs
 
-  startMainWindow (headDef "/" args)
+  mygui <- createMyGUI
+
+  myview <- createMyView mygui createTreeView
+
+  refreshView mygui myview (Just $ headDef "/" args)
+
+  widgetShowAll (rootWin mygui)
 
   _ <- 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 =<< getDataFileName "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"
-  clearStatusBar    <- builderGetObject builder castToButton
-                       "clearStatusBar"
-  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
-  -- set selection mode
-  tvs <- treeViewGetSelection treeView
-  treeSelectionSetMode tvs SelectionMultiple
-
-  -- 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 =<< getDataFileName "data/Gtk/icons/hsfm.png"
-
-  widgetShowAll rootWin

src/GUI/Gtk/Callbacks.hs

@@ -28,9 +28,7 @@ import Control.Applicative
   )
 import Control.Concurrent.STM
   (
-    TVar
-  , newTVarIO
-  , readTVarIO
+    readTVarIO
   )
 import Control.Exception
   (
@@ -53,6 +51,7 @@ import Data.Foldable
 import Graphics.UI.Gtk
 import GUI.Gtk.Data
 import GUI.Gtk.Dialogs
+import GUI.Gtk.MyView
 import GUI.Gtk.Utils
 import IO.Error
 import IO.File
@@ -77,109 +76,121 @@ import System.Glib.UTFString
 
 
 -- |Set callbacks, on hotkeys, events and stuff.
---
--- Interaction with mutable references:
---
--- * 'settings mygui' modifies
 setCallbacks :: MyGUI -> MyView -> IO ()
 setCallbacks mygui myview = do
-  -- GUI events
-  _ <- urlBar mygui `on` entryActivated $ urlGoTo mygui myview
-  _ <- treeView mygui `on` rowActivated $ (\_ _ -> withRows mygui myview open)
-  _ <- refreshView mygui `on` buttonActivated $ do
-       cdir <- liftIO $ getCurrentDir myview
-       refreshTreeView' mygui myview cdir
-  _ <- clearStatusBar mygui `on` buttonActivated $ do
-       popStatusbar mygui
-       writeTVarIO (operationBuffer myview) None
+  view' <- readTVarIO $ view myview
+  case view' of
+    FMTreeView treeView -> setTreeViewCallbacks treeView
+    FMIconView iconView -> return ()
+  menubarCallbacks
+  where
+    menubarCallbacks = do
+      -- menubar-file
+      _ <- menubarFileQuit mygui `on` menuItemActivated $ mainQuit
+      _ <- menubarFileOpen mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview open
+      _ <- menubarFileExecute mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview execute
+      _ <- menubarFileNew mygui `on` menuItemActivated $
+        liftIO $ newFile mygui myview
 
-  -- key events
-  _ <- 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 $ withRows mygui myview del
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    []            <- eventModifier
-    "Return"      <- fmap glibToString eventKeyName
-    liftIO $ withRows mygui myview open
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "c"       <- fmap glibToString eventKeyName
-    liftIO $ withRows mygui myview copyInit
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "x"       <- fmap glibToString eventKeyName
-    liftIO $ withRows mygui myview moveInit
-  _ <- treeView mygui `on` keyPressEvent $ tryEvent $ do
-    [Control] <- eventModifier
-    "v"       <- fmap glibToString eventKeyName
-    liftIO $ operationFinal mygui myview
+      -- menubar-edit
+      _ <- menubarEditCut mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview moveInit
+      _ <- menubarEditCopy mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview copyInit
+      _ <- menubarEditRename mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview renameF
+      _ <- menubarEditPaste mygui `on` menuItemActivated $
+        liftIO $ operationFinal mygui myview
+      _ <- menubarEditDelete mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview del
 
-  -- menubar-file
-  _ <- menubarFileQuit mygui `on` menuItemActivated $ mainQuit
-  _ <- menubarFileOpen mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview open
-  _ <- menubarFileExecute mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview execute
-  _ <- menubarFileNew mygui `on` menuItemActivated $
-    liftIO $ newFile mygui myview
+      -- mewnubar-view
+      _ <- menubarViewIcon mygui `on` menuItemActivated $
+        liftIO $ switchView mygui myview createIconView
+      _ <- menubarViewTree mygui `on` menuItemActivated $
+        liftIO $ switchView mygui myview createTreeView
 
-  -- menubar-edit
-  _ <- menubarEditCut mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview moveInit
-  _ <- menubarEditCopy mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview copyInit
-  _ <- menubarEditRename mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview renameF
-  _ <- menubarEditPaste mygui `on` menuItemActivated $
-    liftIO $ operationFinal mygui myview
-  _ <- menubarEditDelete mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview del
+      -- menubar-help
+      _ <- menubarHelpAbout mygui `on` menuItemActivated $
+        liftIO showAboutDialog
+      return ()
+    setTreeViewCallbacks treeView = do
+      -- GUI events
+      _ <- urlBar mygui `on` entryActivated $ urlGoTo mygui myview
+      _ <- treeView `on` rowActivated
+             $ (\_ _ -> withItems mygui myview open)
+      _ <- refreshViewB mygui `on` buttonActivated $ do
+           cdir <- liftIO $ getCurrentDir myview
+           refreshView' mygui myview cdir
+      _ <- clearStatusBar mygui `on` buttonActivated $ do
+           popStatusbar mygui
+           writeTVarIO (operationBuffer myview) None
 
-  -- menubar-help
-  _ <- menubarHelpAbout mygui `on` menuItemActivated $
-    liftIO showAboutDialog
+      -- key events
+      _ <- rootWin mygui `on` keyPressEvent $ tryEvent $ do
+        [Control] <- eventModifier
+        "q"       <- fmap glibToString eventKeyName
+        liftIO mainQuit
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        [Control] <- eventModifier
+        "h"       <- fmap glibToString eventKeyName
+        cdir <- liftIO $ getCurrentDir myview
+        liftIO $ modifyTVarIO (settings mygui)
+                              (\x -> x { showHidden = not . showHidden $ x})
+                 >> refreshView' mygui myview cdir
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        [Alt] <- eventModifier
+        "Up"  <- fmap glibToString eventKeyName
+        liftIO $ upDir mygui myview
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        "Delete"  <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview del
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        []            <- eventModifier
+        "Return"      <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview open
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        [Control] <- eventModifier
+        "c"       <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview copyInit
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        [Control] <- eventModifier
+        "x"       <- fmap glibToString eventKeyName
+        liftIO $ withItems mygui myview moveInit
+      _ <- treeView `on` keyPressEvent $ tryEvent $ do
+        [Control] <- eventModifier
+        "v"       <- fmap glibToString eventKeyName
+        liftIO $ operationFinal mygui myview
 
-  -- 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 $ withRows mygui myview open
-  _ <- rcFileExecute mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview execute
-  _ <- rcFileNew mygui `on` menuItemActivated $
-    liftIO $ newFile mygui myview
-  _ <- rcFileCopy mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview copyInit
-  _ <- rcFileRename mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview renameF
-  _ <- rcFilePaste mygui `on` menuItemActivated $
-    liftIO $ operationFinal mygui myview
-  _ <- rcFileDelete mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview del
-  _ <- rcFileCut mygui `on` menuItemActivated $
-    liftIO $ withRows mygui myview moveInit
+      -- righ-click
+      _ <- treeView `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 $ withItems mygui myview open
+      _ <- rcFileExecute mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview execute
+      _ <- rcFileNew mygui `on` menuItemActivated $
+        liftIO $ newFile mygui myview
+      _ <- rcFileCopy mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview copyInit
+      _ <- rcFileRename mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview renameF
+      _ <- rcFilePaste mygui `on` menuItemActivated $
+        liftIO $ operationFinal mygui myview
+      _ <- rcFileDelete mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview del
+      _ <- rcFileCut mygui `on` menuItemActivated $
+        liftIO $ withItems mygui myview moveInit
 
-  return ()
+      return ()
 
 
 -- |Go to the url given at the 'urlBar' and visualize it in the given
@@ -190,16 +201,16 @@ urlGoTo mygui myview = withErrorDialog $ do
   let abs = isAbsolute fp
   exists <- (||) <$> doesDirectoryExist fp <*> doesFileExist fp
   -- TODO: more explicit error handling?
-  refreshTreeView mygui myview (Just fp)
+  refreshView mygui myview (Just fp)
 
 
 -- |Supposed to be used with 'withRows'. Opens a file or directory.
-open :: [Row] -> MyGUI -> MyView -> IO ()
-open [row] mygui myview = withErrorDialog $
-  case row of
+open :: [Item] -> MyGUI -> MyView -> IO ()
+open [item] mygui myview = withErrorDialog $
+  case item of
     ADirOrSym r -> do
       nv <- Data.DirTree.readFile $ fullPath r
-      refreshTreeView' mygui myview nv
+      refreshView' mygui myview nv
     r ->
       void $ openFile r
 -- this throws on the first error that occurs
@@ -211,39 +222,35 @@ open _ _ _ = withErrorDialog
 
 
 -- |Execute a given file.
-execute :: [Row] -> MyGUI -> MyView -> IO ()
-execute [row] mygui myview = withErrorDialog $
-  void $ executeFile row []
+execute :: [Item] -> MyGUI -> MyView -> IO ()
+execute [item] mygui myview = withErrorDialog $
+  void $ executeFile item []
 execute _ _ _ = withErrorDialog
                   . throw $ InvalidOperation
                             "Operation not supported on multiple files"
 
 
 -- |Supposed to be used with 'withRows'. Deletes a file or directory.
-del :: [Row] -> MyGUI -> MyView -> IO ()
-del [row] mygui myview = withErrorDialog $ do
-  let cmsg  = "Really delete \"" ++ fullPath row ++ "\"?"
+del :: [Item] -> MyGUI -> MyView -> IO ()
+del [item] mygui myview = withErrorDialog $ do
+  let cmsg  = "Really delete \"" ++ fullPath item ++ "\"?"
   withConfirmationDialog cmsg
-    $ easyDelete row
+    $ easyDelete item
 -- this throws on the first error that occurs
-del rows@(_:_) mygui myview = withErrorDialog $ do
-  let cmsg  = "Really delete " ++ show (length rows) ++ " files?"
+del items@(_:_) mygui myview = withErrorDialog $ do
+  let cmsg  = "Really delete " ++ show (length items) ++ " files?"
   withConfirmationDialog cmsg
-    $ forM_ rows $ \row -> easyDelete row
+    $ forM_ items $ \item -> easyDelete item
 del _ _ _ = withErrorDialog
               . throw $ InvalidOperation
                         "Operation not supported on multiple files"
 
 
 -- |Initializes a file move operation.
---
--- Interaction with mutable references:
---
--- * 'operationBuffer' writes
-moveInit :: [Row] -> MyGUI -> MyView -> IO ()
-moveInit [row] mygui myview = do
-  writeTVarIO (operationBuffer myview) (FMove . MP1 $ row)
-  let sbmsg = "Move buffer: " ++ fullPath row
+moveInit :: [Item] -> MyGUI -> MyView -> IO ()
+moveInit [item] mygui myview = do
+  writeTVarIO (operationBuffer myview) (FMove . MP1 $ item)
+  let sbmsg = "Move buffer: " ++ fullPath item
   popStatusbar mygui
   void $ pushStatusBar mygui sbmsg
 moveInit _ _ _ = withErrorDialog
@@ -251,14 +258,10 @@ moveInit _ _ _ = withErrorDialog
                              "Operation not supported on multiple files"
 
 -- |Supposed to be used with 'withRows'. Initializes a file copy operation.
---
--- Interaction with mutable references:
---
--- * 'operationBuffer' writes
-copyInit :: [Row] -> MyGUI -> MyView -> IO ()
-copyInit [row] mygui myview = do
-  writeTVarIO (operationBuffer myview) (FCopy . CP1 $ row)
-  let sbmsg = "Copy buffer: " ++ fullPath row
+copyInit :: [Item] -> MyGUI -> MyView -> IO ()
+copyInit [item] mygui myview = do
+  writeTVarIO (operationBuffer myview) (FCopy . CP1 $ item)
+  let sbmsg = "Copy buffer: " ++ fullPath item
   popStatusbar mygui
   void $ pushStatusBar mygui sbmsg
 copyInit _ _ _ = withErrorDialog
@@ -267,10 +270,6 @@ copyInit _ _ _ = withErrorDialog
 
 
 -- |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)
@@ -292,18 +291,13 @@ operationFinal mygui myview = withErrorDialog $ do
 
 
 -- |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
+  refreshView' mygui myview nv
 
 
 -- |Go up one directory and visualize it in the treeView.
@@ -315,13 +309,13 @@ newFile mygui myview = withErrorDialog $ do
     createFile cdir fn
 
 
-renameF :: [Row] -> MyGUI -> MyView -> IO ()
-renameF [row] mygui myview = withErrorDialog $ do
+renameF :: [Item] -> MyGUI -> MyView -> IO ()
+renameF [item] 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
+    let cmsg = "Really rename \"" ++ fullPath item
+               ++ "\"" ++ " to \"" ++ anchor item </> fn ++ "\"?"
+    withConfirmationDialog cmsg $ IO.File.renameFile item fn
 renameF _ _ _ = withErrorDialog
                   . throw $ InvalidOperation
                             "Operation not supported on multiple files"

src/GUI/Gtk/Callbacks.hs-boot

@@ -0,0 +1,25 @@
+{--
+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.
+--}
+
+
+module GUI.Gtk.Callbacks where
+
+import GUI.Gtk.Data
+
+
+setCallbacks :: MyGUI -> MyView -> IO ()

src/GUI/Gtk/Data.hs

@@ -60,6 +60,8 @@ data MyGUI = MkMyGUI {
   , menubarEditRename :: ImageMenuItem
   , menubarEditPaste :: ImageMenuItem
   , menubarEditDelete :: ImageMenuItem
+  , menubarViewTree :: ImageMenuItem
+  , menubarViewIcon :: ImageMenuItem
   , menubarHelpAbout :: ImageMenuItem
   , rcMenu :: Menu
   , rcFileOpen :: ImageMenuItem
@@ -70,23 +72,17 @@ data MyGUI = MkMyGUI {
   , rcFileRename :: ImageMenuItem
   , rcFilePaste :: ImageMenuItem
   , rcFileDelete :: ImageMenuItem
-  , refreshView :: Button
+  , refreshViewB :: Button
   , urlBar :: Entry
   , statusBar :: Statusbar
   , clearStatusBar :: Button
-  , 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
+  , scroll :: ScrolledWindow
 }
 
 
@@ -96,17 +92,24 @@ data FMSettings = MkFMSettings {
   , isLazy :: Bool
 }
 
+data FMView = FMTreeView TreeView
+            | FMIconView IconView
 
-type Row = AnchoredFile FileInfo
+type Item = AnchoredFile FileInfo
 
 
--- |This describes the contents of the treeView and is separated from MyGUI,
+-- |This describes the contents of the current vie 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)
+    view            :: TVar FMView
+  , rawModel        :: TVar (ListStore Item)
+  , sortedModel     :: TVar (TypedTreeModelSort Item)
+  , filteredModel   :: TVar (TypedTreeModelFilter Item)
   , operationBuffer :: TVar FileOperation
-  , inotify :: MVar INotify
+  , inotify         :: MVar INotify
 }
 
+
+fmViewToContainer :: FMView -> Container
+fmViewToContainer (FMTreeView x) =  castToContainer . toGObject $ x
+fmViewToContainer (FMIconView x) =  castToContainer . toGObject $ x

src/GUI/Gtk/MyGUI.hs

@@ -0,0 +1,123 @@
+{--
+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.MyGUI where
+
+
+import Control.Concurrent.STM
+  (
+    newTVarIO
+  )
+import Graphics.UI.Gtk
+import GUI.Gtk.Data
+import GUI.Gtk.Icons
+import Paths_hsfm
+  (
+    getDataFileName
+  )
+
+
+
+
+    -------------------------
+    --[ Main Window Setup ]--
+    -------------------------
+
+
+-- |Set up the GUI. This only creates the permanent widgets.
+createMyGUI :: IO MyGUI
+createMyGUI = do
+
+  settings <- newTVarIO (MkFMSettings False True)
+
+  -- 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
+
+  builder <- builderNew
+  builderAddFromFile builder =<< getDataFileName "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"
+  clearStatusBar    <- builderGetObject builder castToButton
+                       "clearStatusBar"
+  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"
+  refreshViewB      <- builderGetObject builder castToButton
+                       "refreshViewB"
+  menubarViewTree   <- builderGetObject builder castToImageMenuItem
+                       "menubarViewTree"
+  menubarViewIcon   <- builderGetObject builder castToImageMenuItem
+                       "menubarViewIcon"
+
+  -- construct the gui object
+  let mygui  = MkMyGUI {..}
+
+  -- sets the default icon
+  windowSetDefaultIconFromFile =<< getDataFileName "data/Gtk/icons/hsfm.png"
+
+  return mygui

src/GUI/Gtk/MyView.hs

@@ -0,0 +1,307 @@
+{--
+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.MyView where
+
+
+import Control.Applicative
+  (
+    (<$>)
+  )
+import Control.Concurrent.MVar
+  (
+    newEmptyMVar
+  , putMVar
+  , tryTakeMVar
+  )
+import Control.Concurrent.STM
+  (
+    newTVarIO
+  , readTVarIO
+  )
+import Data.DirTree
+import Data.Foldable
+  (
+    for_
+  )
+import Data.Maybe
+  (
+    catMaybes
+  )
+import Graphics.UI.Gtk
+import {-# SOURCE #-} GUI.Gtk.Callbacks (setCallbacks)
+import GUI.Gtk.Data
+import GUI.Gtk.Utils
+import IO.File
+import IO.Utils
+import System.FilePath
+  (
+    isAbsolute
+  )
+import System.INotify
+  (
+    addWatch
+  , initINotify
+  , killINotify
+  , EventVariety(..)
+  , Event(..)
+  )
+
+
+
+
+-- |Constructs the initial MyView object with a few dummy models.
+-- It also initializes the callbacks.
+createMyView :: MyGUI -> IO FMView -> IO MyView
+createMyView mygui iofmv = do
+  operationBuffer <- newTVarIO None
+
+  inotify <- newEmptyMVar
+
+  -- 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
+
+  view' <- iofmv
+  view  <- newTVarIO view'
+
+  let myview = MkMyView {..}
+
+  -- set the bindings
+  setCallbacks mygui myview
+
+  -- add the treeview to the scroll container
+  let oview = fmViewToContainer view'
+  containerAdd (scroll mygui) oview
+
+  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
+  view' <- readTVarIO $ view myview
+  let oview = fmViewToContainer view'
+
+  widgetDestroy oview
+
+  nview' <- iofmv
+  let nview = fmViewToContainer nview'
+
+  writeTVarIO (view myview) nview'
+
+  setCallbacks mygui myview
+
+  containerAdd (scroll mygui) nview
+  widgetShow nview
+
+  refreshView mygui myview Nothing
+
+
+-- |Createss an IconView.
+createIconView :: IO FMView
+createIconView = do
+  iconv <- iconViewNew
+  iconViewSetSelectionMode iconv SelectionMultiple
+  iconViewSetColumns iconv (-1)
+  iconViewSetSpacing iconv 2
+  iconViewSetMargin iconv 0
+
+  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
+
+  -- 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
+
+  return $ FMTreeView treeView
+
+
+-- |Re-reads the current directory or the given one and updates the View.
+refreshView :: MyGUI
+            -> MyView
+            -> Maybe FilePath
+            -> IO ()
+refreshView mygui myview mfp =
+  case mfp of
+    Just fp  -> do
+      cdir <- (\x -> if (failed . file $ x) || (not . isAbsolute . anchor $ x)
+                       then Data.DirTree.readFile "/"
+                       else return x) =<< Data.DirTree.readFile fp
+      refreshView' mygui myview  cdir
+    Nothing  -> refreshView' mygui myview =<< getCurrentDir myview
+
+
+-- |Refreshes the View based on the given directory.
+refreshView' :: MyGUI
+             -> MyView
+             -> AnchoredFile FileInfo
+             -> IO ()
+refreshView' mygui myview dt@(ADirOrSym _) = do
+  newRawModel  <- fileListStore dt myview
+  writeTVarIO (rawModel myview) newRawModel
+
+  view' <- readTVarIO $ view myview
+
+  -- 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' _ _ _ = return ()
+
+
+-- |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
+  view' <- readTVarIO $ view myview
+
+  cdirp <- anchor <$> getFirstItem 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 <$> readTVarIO (settings mygui)
+     item    <- (name . file) <$> treeModelGetRow rawModel' iter
+     if hidden
+       then return True
+       else return $ not . hiddenFile $ 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 . file)
+  treeModelSetColumn rawModel' (makeColumnIdString 1)
+                     (name . file)
+  treeModelSetColumn rawModel' (makeColumnIdString 2)
+                     (packModTime . file)
+  treeModelSetColumn rawModel' (makeColumnIdString 3)
+                     (packPermissions . file)
+
+  -- update model of view
+  case view' of
+    FMTreeView treeView -> do
+      treeViewSetModel treeView 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
+  w <- addWatch
+         newi
+         [Move, MoveIn, MoveOut, MoveSelf, Create, Delete, DeleteSelf]
+         cdirp
+         (\_ -> postGUIAsync $ refreshView 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

src/GUI/Gtk/Utils.hs

@@ -25,30 +25,14 @@ import Control.Applicative
   (
     (<$>)
   )
-import Control.Concurrent.MVar
-  (
-    putMVar
-  , tryTakeMVar
-  )
 import Control.Concurrent.STM
   (
-    TVar
-  , newTVarIO
-  , readTVarIO
+    readTVarIO
   )
 import Data.DirTree
-import Data.Foldable
-  (
-    for_
-  )
-import Data.List
-  (
-    isPrefixOf
-  )
 import Data.Maybe
   (
     catMaybes
-  , fromMaybe
   , fromJust
   )
 import Data.Traversable
@@ -57,17 +41,6 @@ import Data.Traversable
   )
 import Graphics.UI.Gtk
 import GUI.Gtk.Data
-import IO.Error
-import IO.Utils
-import MyPrelude
-import System.INotify
-  (
-    addWatch
-  , initINotify
-  , killINotify
-  , EventVariety(..)
-  , Event(..)
-  )
 
 
 
@@ -77,22 +50,34 @@ import System.INotify
     -----------------
 
 
--- |Gets the currently selected row of the treeView, if any.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
--- * 'sortedModel' reads
--- * 'filteredModel' reads
-getSelectedRows :: MyGUI
-                -> MyView
-                -> IO [Row]
-getSelectedRows mygui myview = do
-  tvs   <- treeViewGetSelection (treeView mygui)
-  tps   <- treeSelectionGetSelectedRows tvs
+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
+  getSelectedItems' mygui myview tps
+
+
+getSelectedItems' :: MyGUI
+                  -> MyView
+                  -> [TreePath]
+                  -> IO [Item]
+getSelectedItems' mygui myview tps = do
+  rawModel'      <- readTVarIO $ rawModel myview
   sortedModel'   <- readTVarIO $ sortedModel myview
   filteredModel' <- readTVarIO $ filteredModel myview
-  rawModel'      <- readTVarIO $ rawModel myview
   iters <- catMaybes <$> mapM (treeModelGetIter sortedModel') tps
   forM iters $ \iter -> do
     cIter' <- treeModelSortConvertIterToChildIter sortedModel' iter
@@ -100,19 +85,21 @@ getSelectedRows mygui myview = do
     treeModelGetRow rawModel' cIter
 
 
--- |Carry out an action on the currently selected row.
+
+
+-- |Carry out an action on the currently selected item.
 --
--- If there is no row selected, does nothing.
-withRows :: MyGUI
-         -> MyView
-         -> (   [Row]
-             -> MyGUI
-             -> MyView
-             -> IO ()) -- ^ action to carry out
-         -> IO ()
-withRows mygui myview io = do
-  rows <- getSelectedRows mygui myview
-  io rows mygui myview
+-- If there is no item selected, does nothing.
+withItems :: MyGUI
+          -> MyView
+          -> (   [Item]
+              -> MyGUI
+              -> MyView
+              -> IO ()) -- ^ action to carry out
+          -> IO ()
+withItems mygui myview io = do
+  items <- getSelectedItems mygui myview
+  io items mygui myview
 
 
 -- |Create the 'ListStore' of files/directories from the current directory.
@@ -120,172 +107,29 @@ withRows mygui myview io = do
 -- into the GTK+ data structures.
 fileListStore :: AnchoredFile FileInfo  -- ^ current dir
               -> MyView
-              -> IO (ListStore Row)
+              -> IO (ListStore Item)
 fileListStore dt myview = do
   cs <- Data.DirTree.getContents dt
   listStoreNew cs
 
 
--- |Currently unsafe. This is used to obtain any row (possibly the '.' row)
+-- |Currently unsafe. This is used to obtain any item (possibly the '.' item)
 -- and extract the "current working directory" from it.
---
--- Interaction with mutable references:
---
--- * 'rawModel' reads
-getFirstRow :: MyView
+getFirstItem :: MyView
             -> IO (AnchoredFile FileInfo)
-getFirstRow myview = do
+getFirstItem myview = do
   rawModel' <- readTVarIO $ rawModel myview
   iter      <- fromJust <$> treeModelGetIterFirst rawModel'
   treeModelGetRow rawModel' iter
 
 
--- |Currently unsafe. Gets the current directory via `getFirstRow` and `goUp`.
+-- |Currently unsafe. Gets the current directory via `getFirstItem` and
+-- `goUp`.
 getCurrentDir :: MyView
               -> IO (AnchoredFile FileInfo)
-getCurrentDir myview = getFirstRow myview >>= goUp
+getCurrentDir myview = getFirstItem 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'
-  treeViewSetRubberBanding treeView' True
-
-  -- 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.