Edit.hs

-- -*-haskell-*-
--  Vision (for the Voice): an XMMS2 client.
--
--  Author:  Oleg Belozeorov
--  Created: 26 Jun. 2010
--
--  Copyright (C) 2010 Oleg Belozeorov
--
--  This program is free software; you can redistribute it and/or
--  modify it under the terms of the GNU General Public License as
--  published by the Free Software Foundation; either version 3 of
--  the License, or (at your option) any later version.
--
--  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.
--

module Playlist.Edit
  ( editDelete
  , editCopy
  , editPaste
  , editSelectAll
  , editInvertSelection
  , editCheckClipboard
  ) where

import Control.Applicative
import Control.Monad
import Control.Monad.Trans

import Graphics.UI.Gtk

import Atoms
import Utils
import Clipboard
import Playback
import Playlist.Model
import Playlist.View
import Playlist.Control


editDelete cut = do
  tracks <- getSelectedTracks
  when cut $ copyIds tracks
  removeTracks tracks
  maybeTrack <- currentTrackThisPlaylist
  fmaybeM_ maybeTrack $ \t ->
    when (t `elem` tracks) restartPlayback

editCopy = copyIds =<< getSelectedTracks

editPaste append =
  clipboardRequestContents clipboard xmms2MlibId $ do
    maybeIds <- selectionDataGet selectionTypeInteger
    fmaybeM_ maybeIds $ \ids -> liftIO $ do
      (path, _) <- treeViewGetCursor playlistView
      insertIds ids $ case path of
        [n] | not append -> Just n
        _                -> Nothing

editSelectAll =
  treeSelectionSelectAll playlistSel

editInvertSelection = do
  rows <- treeSelectionGetSelectedRows playlistSel
  treeSelectionSelectAll playlistSel
  mapM_ (treeSelectionUnselectPath playlistSel) rows

editCheckClipboard =
  elem xmms2MlibId <$> getClipboardTargets


copyIds tracks = do
  ids <- playlistGetIds tracks
  clipboardSetWithData clipboard
    [(xmms2MlibId, 0)]
    (const $ selectionDataSet selectionTypeInteger ids)
    (return ())
  return ()