Clementine-audio-player-Mac.../src/playlist/playlistundocommands.h

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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine 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.
Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef PLAYLISTUNDOCOMMANDS_H
#define PLAYLISTUNDOCOMMANDS_H
#include <QUndoCommand>
#include <QCoreApplication>
#include "playlistitem.h"
class Playlist;
namespace PlaylistUndoCommands {
enum Types {
Type_RemoveItems = 0,
};
class Base : public QUndoCommand {
Q_DECLARE_TR_FUNCTIONS(PlaylistUndoCommands);
public:
Base(Playlist* playlist);
protected:
Playlist* playlist_;
};
class InsertItems : public Base {
public:
InsertItems(Playlist* playlist, const PlaylistItemList& items, int pos,
bool enqueue = false);
void undo();
void redo();
// When load is async, items have already been pushed, so we need to update them.
// This function try to find the equivalent item, and replace it with the
// new (completely loaded) one.
// return true if the was found (and updated), false otherwise
bool UpdateItem(const PlaylistItemPtr& updated_item);
private:
PlaylistItemList items_;
int pos_;
bool enqueue_;
};
class RemoveItems : public Base {
public:
RemoveItems(Playlist* playlist, int pos, int count);
int id() const { return Type_RemoveItems; }
void undo();
void redo();
bool mergeWith(const QUndoCommand *other);
private:
struct Range {
Range(int pos, int count) : pos_(pos), count_(count) {}
int pos_;
int count_;
PlaylistItemList items_;
};
QList<Range> ranges_;
};
class MoveItems : public Base {
public:
MoveItems(Playlist* playlist, const QList<int>& source_rows, int pos);
void undo();
void redo();
private:
QList<int> source_rows_;
int pos_;
};
} //namespace
#endif // PLAYLISTUNDOCOMMANDS_H