Refactoring

src/playlist/playlistundocommandremoveitems.cpp

@@ -0,0 +1,58 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2020-2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * 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/>.
+ *
+ */
+
+#include <QObject>
+
+#include "playlist.h"
+#include "playlistundocommandremoveitems.h"
+
+PlaylistUndoCommandRemoveItems::PlaylistUndoCommandRemoveItems(Playlist *playlist, const int pos, const int count) : PlaylistUndoCommandBase(playlist) {
+  setText(QObject::tr("remove %n songs", "", count));
+
+  ranges_ << Range(pos, count);
+}
+
+void PlaylistUndoCommandRemoveItems::redo() {
+
+  for (int i = 0; i < ranges_.count(); ++i) {
+    ranges_[i].items_ = playlist_->RemoveItemsWithoutUndo(ranges_[i].pos_, ranges_[i].count_);
+  }
+
+}
+
+void PlaylistUndoCommandRemoveItems::undo() {
+
+  for (int i = static_cast<int>(ranges_.count() - 1); i >= 0; --i) {
+    playlist_->InsertItemsWithoutUndo(ranges_[i].items_, ranges_[i].pos_);
+  }
+
+}
+
+bool PlaylistUndoCommandRemoveItems::mergeWith(const QUndoCommand *other) {
+
+  const PlaylistUndoCommandRemoveItems *remove_command = static_cast<const PlaylistUndoCommandRemoveItems*>(other);
+  ranges_.append(remove_command->ranges_);
+
+  int sum = 0;
+  for (const Range &range : std::as_const(ranges_)) sum += range.count_;
+  setText(QObject::tr("remove %n songs", "", sum));
+
+  return true;
+
+}