hsfm/src/HSFM/GUI/Gtk/Plugins.hs

113 lines
2.4 KiB
Haskell

{--
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