Initial commit.

src/widgets/autoexpandingtreeview.h

@@ -0,0 +1,77 @@
+/*
+ * 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 AUTOEXPANDINGTREEVIEW_H
+#define AUTOEXPANDINGTREEVIEW_H
+
+#include "config.h"
+
+#include <QTreeView>
+
+class AutoExpandingTreeView : public QTreeView {
+  Q_OBJECT
+
+ public:
+  AutoExpandingTreeView(QWidget *parent = nullptr);
+
+  static const int kRowsToShow;
+
+  void SetAutoOpen(bool v) { auto_open_ = v; }
+  void SetExpandOnReset(bool v) { expand_on_reset_ = v; }
+  void SetAddOnDoubleClick(bool v) { add_on_double_click_ = v; }
+
+public slots:
+  void RecursivelyExpand(const QModelIndex &index);
+  void UpAndFocus();
+  void DownAndFocus();
+
+signals:
+  void AddToPlaylistSignal(QMimeData *data);
+  void FocusOnFilterSignal(QKeyEvent *event);
+
+protected:
+  // QAbstractItemView
+  void reset();
+
+  // QWidget
+  void mousePressEvent(QMouseEvent *event);
+  void mouseDoubleClickEvent(QMouseEvent *event);
+  void keyPressEvent(QKeyEvent *event);
+
+  virtual bool CanRecursivelyExpand(const QModelIndex &index) const { return true; }
+
+private slots:
+  void ItemExpanded(const QModelIndex &index);
+  void ItemClicked(const QModelIndex &index);
+  void ItemDoubleClicked(const QModelIndex &index);
+
+private:
+  bool RecursivelyExpand(const QModelIndex &index, int *count);
+
+private:
+  bool auto_open_;
+  bool expand_on_reset_;
+  bool add_on_double_click_;
+
+  bool ignore_next_click_;
+};
+
+#endif  // AUTOEXPANDINGTREEVIEW_H
+