Initial commit.

src/playlist/playlistundocommands.h

@@ -0,0 +1,126 @@
+/*
+ * Strawberry Music Player
+ * This file was part of Clementine.
+ * Copyright 2010, David Sansome <me@davidsansome.com>
+ *
+ * Strawberry 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.
+ *
+ * Strawberry 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 Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ * 
+ */
+
+#ifndef PLAYLISTUNDOCOMMANDS_H
+#define PLAYLISTUNDOCOMMANDS_H
+
+#include "config.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_;
+  };
+
+  class ReOrderItems : public Base {
+   public:
+    ReOrderItems(Playlist *playlist, const PlaylistItemList &new_items);
+
+    void undo();
+    void redo();
+
+   private:
+    PlaylistItemList old_items_;
+    PlaylistItemList new_items_;
+  };
+
+  class SortItems : public ReOrderItems {
+   public:
+    SortItems(Playlist *playlist, int column, Qt::SortOrder order,  const PlaylistItemList &new_items);
+
+   private:
+    int column_;
+    Qt::SortOrder order_;
+  };
+  
+  class ShuffleItems : public ReOrderItems {
+   public:
+    ShuffleItems(Playlist *playlist, const PlaylistItemList &new_items);
+  };
+} //namespace
+
+#endif // PLAYLISTUNDOCOMMANDS_H