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790 lines
24 KiB
790 lines
24 KiB
/***************************************************************************
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begin : Sat Feb 16 2002
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copyright : (C) 2002 - 2004 by Scott Wheeler
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email : wheeler@kde.org
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef PLAYLIST_H
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#define PLAYLIST_H
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#include <klistview.h>
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#include <kurldrag.h>
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#include <kdebug.h>
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#include <kglobalsettings.h>
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#include <tqvaluevector.h>
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#include <tqfileinfo.h>
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#include "covermanager.h"
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#include "stringhash.h"
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#include "playlistsearch.h"
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#include "tagguesser.h"
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#include "playlistinterface.h"
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#include "playlistitem.h"
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class KPopupMenu;
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class KActionMenu;
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class QEvent;
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class PlaylistCollection;
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class WebImageFetcher;
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class PlaylistToolTip;
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class UpcomingPlaylist;
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typedef TQValueList<PlaylistItem *> PlaylistItemList;
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class Playlist : public KListView, public PlaylistInterface
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{
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Q_OBJECT
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public:
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Playlist(PlaylistCollection *collection, const TQString &name = TQString::null,
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const TQString &iconName = "midi");
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Playlist(PlaylistCollection *collection, const PlaylistItemList &items,
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const TQString &name = TQString::null, const TQString &iconName = "midi");
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Playlist(PlaylistCollection *collection, const TQFileInfo &playlistFile,
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const TQString &iconName = "midi");
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/**
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* This constructor should generally only be used either by the cache
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* restoration methods or by subclasses that want to handle calls to
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* PlaylistCollection::setupPlaylist() differently.
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*/
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Playlist(PlaylistCollection *collection, bool delaySetup);
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virtual ~Playlist();
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// The following group of functions implement the PlaylistInterface API.
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virtual TQString name() const;
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virtual FileHandle currentFile() const;
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virtual int count() const { return childCount(); }
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virtual int time() const;
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virtual void playNext();
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virtual void playPrevious();
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virtual void stop();
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/**
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* Plays the top item of the playlist.
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*/
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void playFirst();
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/**
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* Plays the next album in the playlist. Only useful when in album random
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* play mode.
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*/
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void playNextAlbum();
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/**
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* Saves the file to the currently set file name. If there is no filename
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* currently set, the default behavior is to prompt the user for a file
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* name.
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*/
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virtual void save();
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/**
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* Standard "save as". Prompts the user for a location where to save the
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* playlist to.
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*/
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virtual void saveAs();
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/**
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* Removes \a item from the Playlist, but not from the disk. If
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* \a emitChanged is true this will also notify relevant classes
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* that the content of the list has changed.
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*
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* In some situations, for instance when removing items in a loop, it is
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* preferable to delay this notification until after other operations have
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* completed. In those cases set \a emitChanged to false and call the
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* signal directly.
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*/
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virtual void clearItem(PlaylistItem *item, bool emitChanged = true);
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/**
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* Remove \a items from the playlist and emit a signal indicating
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* that the number of items in the list has changed.
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*/
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virtual void clearItems(const PlaylistItemList &items);
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/**
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* Accessor function to return a pointer to the currently playing file.
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*
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* @return 0 if no file is playing, otherwise a pointer to the PlaylistItem
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* of the track that is currently playing.
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*/
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static PlaylistItem *playingItem();
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/**
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* All of the (media) files in the list.
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*/
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TQStringList files() const;
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/**
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* Returns a list of all of the items in the playlist.
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*/
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virtual PlaylistItemList items();
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/**
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* Returns a list of all of the \e visible items in the playlist.
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*/
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PlaylistItemList visibleItems();
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/**
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* Returns a list of the currently selected items.
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*/
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PlaylistItemList selectedItems();
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/**
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* Returns properly casted first child item in list.
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*/
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PlaylistItem *firstChild() const;
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/**
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* Allow duplicate files in the playlist.
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*/
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void setAllowDuplicates(bool allow) { m_allowDuplicates = allow; }
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/**
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* This is being used as a mini-factory of sorts to make the construction
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* of PlaylistItems virtual. In this case it allows for the creation of
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* both PlaylistItems and CollectionListItems.
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*/
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virtual PlaylistItem *createItem(const FileHandle &file,
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TQListViewItem *after = 0,
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bool emitChanged = true);
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/**
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* This is implemented as a template method to allow subclasses to
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* instantiate their PlaylistItem subclasses using the same method. Some
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* of the types here are artificially templatized (i.e. CollectionListType and
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* CollectionItemType) to avoid recursive includes, but in fact will always
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* be the same.
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*/
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template <class ItemType, class CollectionItemType, class CollectionListType>
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ItemType *createItem(const FileHandle &file,
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TQListViewItem *after = 0,
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bool emitChanged = true);
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virtual void createItems(const PlaylistItemList &siblings, PlaylistItem *after = 0);
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/**
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* This handles adding files of various types -- music, playlist or directory
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* files. Music files that are found will be added to this playlist. New
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* playlist files that are found will result in new playlists being created.
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*
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* Note that this should not be used in the case of adding *only* playlist
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* items since it has the overhead of checking to see if the file is a playlist
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* or directory first.
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*/
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virtual void addFiles(const TQStringList &files, PlaylistItem *after = 0);
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/**
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* Returns the file name associated with this playlist (an m3u file) or
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* TQString::null if no such file exists.
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*/
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TQString fileName() const { return m_fileName; }
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/**
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* Sets the file name to be associated with this playlist; this file should
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* have the "m3u" extension.
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*/
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void setFileName(const TQString &n) { m_fileName = n; }
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/**
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* Hides column \a c. If \a updateSearch is true then a signal that the
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* visible columns have changed will be emitted and things like the search
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* will be udated.
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*/
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void hideColumn(int c, bool updateSearch = true);
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/**
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* Shows column \a c. If \a updateSearch is true then a signal that the
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* visible columns have changed will be emitted and things like the search
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* will be udated.
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*/
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void showColumn(int c, bool updateSearch = true);
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bool isColumnVisible(int c) const;
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/**
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* This sets a name for the playlist that is \e different from the file name.
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*/
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void setName(const TQString &n);
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/**
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* Returns the KActionMenu that allows this to be embedded in menus outside
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* of the playlist.
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*/
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KActionMenu *columnVisibleAction() const { return m_columnVisibleAction; }
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/**
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* Set item to be the playing item. If \a item is null then this will clear
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* the playing indicator.
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*/
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static void setPlaying(PlaylistItem *item, bool addToHistory = true);
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/**
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* Returns true if this playlist is currently playing.
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*/
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bool playing() const;
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/**
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* This forces an update of the left most visible column, but does not save
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* the settings for this.
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*/
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void updateLeftColumn();
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/**
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* Returns the leftmost visible column of the listview.
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*/
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int leftColumn() const { return m_leftColumn; }
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/**
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* Sets the items in the list to be either visible based on the value of
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* visible. This is useful for search operations and such.
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*/
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static void setItemsVisible(const PlaylistItemList &items, bool visible = true);
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/**
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* Returns the search associated with this list, or an empty search if one
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* has not yet been set.
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*/
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PlaylistSearch search() const { return m_search; }
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/**
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* Set the search associtated with this playlist.
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*/
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void setSearch(const PlaylistSearch &s);
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/**
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* If the search is disabled then all items will be shown, not just those that
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* match the current search.
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*/
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void setSearchEnabled(bool searchEnabled);
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/**
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* Marks \a item as either selected or deselected based.
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*/
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void markItemSelected(PlaylistItem *item, bool selected);
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/**
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* Subclasses of Playlist which add new columns will set this value to
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* specify how many of those colums exist. This allows the Playlist
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* class to do some internal calculations on the number and positions
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* of columns.
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*/
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virtual int columnOffset() const { return 0; }
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/**
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* Some subclasses of Playlist will be "read only" lists (i.e. the history
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* playlist). This is a way for those subclasses to indicate that to the
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* Playlist internals.
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*/
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virtual bool readOnly() const { return false; }
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/**
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* Returns true if it's possible to reload this playlist.
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*/
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virtual bool canReload() const { return !m_fileName.isNull(); }
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/**
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* Returns true if the playlist is a search playlist and the search should be
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* editable.
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*/
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virtual bool searchIsEditable() const { return false; }
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/**
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* Synchronizes the the playing item in this playlist with the playing item
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* in \a sources. If \a setMaster is true, this list will become the source
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* for determining the next item.
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*/
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void synchronizePlayingItems(const PlaylistList &sources, bool setMaster);
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/**
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* Playlists have a common set of shared settings such as visible columns
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* that should be applied just before the playlist is shown. Calling this
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* method applies those.
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*/
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void applySharedSettings();
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void read(TQDataStream &s);
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static void setShuttingDown() { m_shuttingDown = true; }
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public slots:
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/**
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* Remove the currently selected items from the playlist and disk.
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*/
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void slotRemoveSelectedItems() { removeFromDisk(selectedItems()); };
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/*
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* The edit slots are required to use the canonical names so that they are
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* detected by the application wide framework.
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*/
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virtual void cut() { copy(); clear(); }
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/**
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* Puts a list of URLs pointing to the files in the current selection on the
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* clipboard.
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*/
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virtual void copy();
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/**
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* Checks the clipboard for local URLs to be inserted into this playlist.
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*/
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virtual void paste();
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/**
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* Removes the selected items from the list, but not the disk.
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*
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* @see clearItem()
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* @see clearItems()
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*/
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virtual void clear();
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virtual void selectAll() { KListView::selectAll(true); }
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/**
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* Refreshes the tags of the selection from disk, or all of the files in the
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* list if there is no selection.
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*/
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virtual void slotRefresh();
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void slotGuessTagInfo(TagGuesser::Type type);
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/**
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* Renames the selected items' files based on their tags contents.
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*
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* @see PlaylistItem::renameFile()
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*/
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void slotRenameFile();
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/**
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* Sets the cover of the selected items, pass in true if you want to load from the local system,
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* false if you want to load from the internet.
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*/
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void slotAddCover(bool fromLocal);
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/**
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* Shows a large image of the cover
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*/
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void slotViewCover();
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/**
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* Removes covers from the selected items
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*/
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void slotRemoveCover();
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/**
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* Shows the cover manager GUI dialog
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*/
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void slotShowCoverManager();
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/**
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* Reload the playlist contents from the m3u file.
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*/
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virtual void slotReload();
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/**
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* Tells the listview that the next time that it paints that the weighted
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* column widths must be recalculated. If this is called without a column
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* all visible columns are marked as dirty.
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*/
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void slotWeightDirty(int column = -1);
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void slotShowPlaying();
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void slotColumnResizeModeChanged();
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virtual void dataChanged();
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protected:
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/**
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* Remove \a items from the playlist and disk. This will ignore items that
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* are not actually in the list.
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*/
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void removeFromDisk(const PlaylistItemList &items);
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// the following are all reimplemented from base classes
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virtual bool eventFilter(TQObject *watched, TQEvent *e);
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virtual void keyPressEvent(TQKeyEvent *e);
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virtual TQDragObject *dragObject(TQWidget *parent);
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virtual TQDragObject *dragObject() { return dragObject(this); }
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virtual bool canDecode(TQMimeSource *s);
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virtual void decode(TQMimeSource *s, PlaylistItem *item = 0);
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virtual void contentsDropEvent(TQDropEvent *e);
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virtual void contentsMouseDoubleClickEvent(TQMouseEvent *e);
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virtual void contentsDragEnterEvent(TQDragEnterEvent *e);
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virtual void showEvent(TQShowEvent *e);
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virtual bool acceptDrag(TQDropEvent *e) const;
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virtual void viewportPaintEvent(TQPaintEvent *pe);
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virtual void viewportResizeEvent(TQResizeEvent *re);
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virtual void insertItem(TQListViewItem *item);
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virtual void takeItem(TQListViewItem *item);
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virtual bool hasItem(const TQString &file) const { return m_members.contains(file); }
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void addColumn(const TQString &label);
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/**
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* Here I'm using delayed setup of some things that aren't quite intuitive.
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* Creating columns and setting up connections are both time consuming if
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* there are a lot of playlists to initialize. This moves that cost from the
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* startup time to the time when the widget is "polished" -- i.e. just before
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* it's painted the first time.
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*/
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virtual void polish();
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/**
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* Do some finial initialization of created items. Notably ensure that they
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* are shown or hidden based on the contents of the current PlaylistSearch.
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*
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* This is called by the PlaylistItem constructor.
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*/
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void setupItem(PlaylistItem *item);
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/**
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* Forwards the call to the parent to enable or disable automatic deletion
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* of tree view playlists. Used by CollectionListItem.
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*/
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void setDynamicListsFrozen(bool frozen);
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template <class ItemType, class SiblingType>
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ItemType *createItem(SiblingType *sibling, ItemType *after = 0);
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/**
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* As a template this allows us to use the same code to initialize the items
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* in subclasses. CollectionItemType should always be CollectionListItem and
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* ItemType should be a PlaylistItem subclass.
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*/
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template <class CollectionItemType, class ItemType, class SiblingType>
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void createItems(const TQValueList<SiblingType *> &siblings, ItemType *after = 0);
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protected slots:
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void slotPopulateBackMenu() const;
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void slotPlayFromBackMenu(int number) const;
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signals:
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/**
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* This is connected to the PlaylistBox::Item to let it know when the
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* playlist's name has changed.
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*/
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void signalNameChanged(const TQString &name);
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/**
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* This signal is emitted just before a playlist item is removed from the
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* list allowing for any cleanup that needs to happen. Typically this
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* is used to remove the item from the history and safeguard against
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* dangling pointers.
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*/
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void signalAboutToRemove(PlaylistItem *item);
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void signalEnableDirWatch(bool enable);
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void coverChanged();
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void signalPlaylistItemsDropped(Playlist *p);
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private:
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void setup();
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/**
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* This function is called to let the user know that JuK has automatically enabled
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* manual column width adjust mode.
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*/
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void notifyUserColumnWidthModeChanged();
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/**
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* Load the playlist from a file. \a fileName should be the absolute path.
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* \a fileInfo should point to the same file as \a fileName. This is a
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* little awkward API-wise, but keeps us from throwing away useful
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* information.
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*/
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void loadFile(const TQString &fileName, const TQFileInfo &fileInfo);
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/**
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* Writes \a text to \a item in \a column. This is used by the inline tag
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* editor. Returns false if the tag update failed.
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*/
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bool editTag(PlaylistItem *item, const TQString &text, int column);
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/**
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* Returns the index of the left most visible column in the playlist.
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*
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* \see isColumnVisible()
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*/
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int leftMostVisibleColumn() const;
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/**
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* This method is used internally to provide the backend to the other item
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* lists.
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*
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* \see items()
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* \see visibleItems()
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* \see selectedItems()
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*/
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PlaylistItemList items(TQListViewItemIterator::IteratorFlag flags);
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/**
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* Build the column "weights" for the weighted width mode.
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*/
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void calculateColumnWeights();
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void addFile(const TQString &file, FileHandleList &files, bool importPlaylists,
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PlaylistItem **after);
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void addFileHelper(FileHandleList &files, PlaylistItem **after,
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bool ignoreTimer = false);
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void redisplaySearch() { setSearch(m_search); }
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/**
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* Sets the cover for items to the cover identified by id.
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*/
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void refreshAlbums(const PlaylistItemList &items, coverKey id = CoverManager::NoMatch);
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void refreshAlbum(const TQString &artist, const TQString &album);
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/**
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* Returns the number of PlaylistItems in @p items that can be assigned a
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* cover. Used to avoid wasting the users' time setting the cover for 20
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* items when none are eligible.
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*/
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unsigned int eligibleCoverItems(const PlaylistItemList &items);
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|
|
|
void updatePlaying() const;
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|
|
|
/**
|
|
* This class is used internally to store settings that are shared by all
|
|
* of the playlists, such as column order. It is implemented as a singleton.
|
|
*/
|
|
class SharedSettings;
|
|
|
|
private slots:
|
|
|
|
void slotUpdateColumnWidths();
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|
|
|
void slotAddToUpcoming();
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|
|
|
/**
|
|
* Show the RMB menu. Matches the signature for the signal
|
|
* TQListView::contextMenuRequested().
|
|
*/
|
|
void slotShowRMBMenu(TQListViewItem *item, const TQPoint &point, int column);
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|
|
|
/**
|
|
* This slot is called when the inline tag editor has completed its editing
|
|
* and starts the process of renaming the values.
|
|
*
|
|
* \see editTag()
|
|
*/
|
|
void slotInlineEditDone(TQListViewItem *, const TQString &, int column);
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|
|
|
/**
|
|
* This starts the renaming process by displaying a line edit if the mouse is in
|
|
* an appropriate position.
|
|
*/
|
|
void slotRenameTag();
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|
|
|
/**
|
|
* The image fetcher will update the cover asynchronously, this internal
|
|
* slot is called when it happens.
|
|
*/
|
|
void slotCoverChanged(int coverId);
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|
|
|
/**
|
|
* Moves the column \a from to the position \a to. This matches the signature
|
|
* for the signal TQHeader::indexChange().
|
|
*/
|
|
void slotColumnOrderChanged(int, int from, int to);
|
|
|
|
/**
|
|
* Toggles a columns visible status. Useful for KActions.
|
|
*
|
|
* \see hideColumn()
|
|
* \see showColumn()
|
|
*/
|
|
void slotToggleColumnVisible(int column);
|
|
|
|
/**
|
|
* Prompts the user to create a new playlist with from the selected items.
|
|
*/
|
|
void slotCreateGroup();
|
|
|
|
/**
|
|
* This slot is called when the user drags the slider in the listview header
|
|
* to manually set the size of the column.
|
|
*/
|
|
void slotColumnSizeChanged(int column, int oldSize, int newSize);
|
|
|
|
/**
|
|
* The slot is called when the completion mode for the line edit in the
|
|
* inline tag editor is changed. It saves the settings and through the
|
|
* magic of the SharedSettings class will apply it to the other playlists as
|
|
* well.
|
|
*/
|
|
void slotInlineCompletionModeChanged(KGlobalSettings::Completion mode);
|
|
|
|
void slotPlayCurrent();
|
|
|
|
private:
|
|
PlaylistCollection *m_collection;
|
|
|
|
StringHash m_members;
|
|
|
|
WebImageFetcher *m_fetcher;
|
|
|
|
int m_currentColumn;
|
|
int m_processed;
|
|
int m_rmbEditID;
|
|
int m_rmbUpcomingID;
|
|
int m_selectedCount;
|
|
|
|
bool m_allowDuplicates;
|
|
bool m_polished;
|
|
bool m_applySharedSettings;
|
|
bool m_columnWidthModeChanged;
|
|
|
|
TQValueList<int> m_weightDirty;
|
|
bool m_disableColumnWidthUpdates;
|
|
|
|
mutable int m_time;
|
|
mutable PlaylistItemList m_addTime;
|
|
mutable PlaylistItemList m_subtractTime;
|
|
|
|
/**
|
|
* The average minimum widths of columns to be used in balancing calculations.
|
|
*/
|
|
TQValueVector<int> m_columnWeights;
|
|
TQValueVector<int> m_columnFixedWidths;
|
|
bool m_widthsDirty;
|
|
|
|
static PlaylistItemList m_history;
|
|
PlaylistSearch m_search;
|
|
|
|
bool m_searchEnabled;
|
|
|
|
PlaylistItem *m_lastSelected;
|
|
|
|
/**
|
|
* Used to store the text for inline editing before it is changed so that
|
|
* we can know if something actually changed and as such if we need to save
|
|
* the tag.
|
|
*/
|
|
TQString m_editText;
|
|
|
|
/**
|
|
* This is only defined if the playlist name is something other than the
|
|
* file name.
|
|
*/
|
|
TQString m_playlistName;
|
|
TQString m_fileName;
|
|
|
|
KPopupMenu *m_rmbMenu;
|
|
KPopupMenu *m_headerMenu;
|
|
KActionMenu *m_columnVisibleAction;
|
|
PlaylistToolTip *m_toolTip;
|
|
|
|
/**
|
|
* This is used to indicate if the list of visible items has changed (via a
|
|
* call to setVisibleItems()) while random play is playing.
|
|
*/
|
|
static bool m_visibleChanged;
|
|
static bool m_shuttingDown;
|
|
static int m_leftColumn;
|
|
static TQMap<int, PlaylistItem *> m_backMenuItems;
|
|
|
|
bool m_blockDataChanged;
|
|
};
|
|
|
|
bool processEvents();
|
|
|
|
class FocusUpEvent : public QCustomEvent
|
|
{
|
|
public:
|
|
FocusUpEvent() : TQCustomEvent(id) {}
|
|
static const int id = 999;
|
|
};
|
|
|
|
TQDataStream &operator<<(TQDataStream &s, const Playlist &p);
|
|
TQDataStream &operator>>(TQDataStream &s, Playlist &p);
|
|
|
|
// template method implementations
|
|
|
|
template <class ItemType, class CollectionItemType, class CollectionListType>
|
|
ItemType *Playlist::createItem(const FileHandle &file, TQListViewItem *after,
|
|
bool emitChanged)
|
|
{
|
|
CollectionItemType *item = CollectionListType::instance()->lookup(file.absFilePath());
|
|
|
|
if(!item) {
|
|
item = new CollectionItemType(file);
|
|
setupItem(item);
|
|
|
|
// If a valid tag was not created, destroy the CollectionListItem.
|
|
|
|
if(!item->isValid()) {
|
|
kdError(65432) << "Playlist::createItem() -- A valid tag was not created for \""
|
|
<< file.absFilePath() << "\"" << endl;
|
|
delete item;
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
if(item && !m_members.insert(file.absFilePath()) || m_allowDuplicates) {
|
|
|
|
ItemType *i = after ? new ItemType(item, this, after) : new ItemType(item, this);
|
|
setupItem(i);
|
|
|
|
if(emitChanged)
|
|
dataChanged();
|
|
|
|
return i;
|
|
}
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
template <class ItemType, class SiblingType>
|
|
ItemType *Playlist::createItem(SiblingType *sibling, ItemType *after)
|
|
{
|
|
m_disableColumnWidthUpdates = true;
|
|
|
|
if(!m_members.insert(sibling->file().absFilePath()) || m_allowDuplicates) {
|
|
after = new ItemType(sibling->collectionItem(), this, after);
|
|
setupItem(after);
|
|
}
|
|
|
|
m_disableColumnWidthUpdates = false;
|
|
|
|
return after;
|
|
}
|
|
|
|
template <class CollectionItemType, class ItemType, class SiblingType>
|
|
void Playlist::createItems(const TQValueList<SiblingType *> &siblings, ItemType *after)
|
|
{
|
|
if(siblings.isEmpty())
|
|
return;
|
|
|
|
TQValueListConstIterator<SiblingType *> it = siblings.begin();
|
|
for(; it != siblings.end(); ++it)
|
|
after = createItem(*it, after);
|
|
|
|
dataChanged();
|
|
slotWeightDirty();
|
|
}
|
|
|
|
#endif
|