Introduce singleton for KFilePlacesModel

There are various places where Dolphin created a new KFilePlacesModel which would then query all storage devices and do other expensive work.

Differential Revision: https://phabricator.kde.org/D11283

1 files changed, 51 insertions, 0 deletions

diff --git a/src/dolphinplacesmodelsingleton.h b/src/dolphinplacesmodelsingleton.h
new file mode 100644
index 000000000..6bce25d16
--- /dev/null
+++ b/src/dolphinplacesmodelsingleton.h
@@ -0,0 +1,51 @@
+/***************************************************************************
+ *   Copyright (C) 2018 Kai Uwe Broulik <[email protected]>            *
+ *                                                                         *
+ *   This program 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 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program 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 this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA            *
+ ***************************************************************************/
+
+#ifndef DOLPHINPLACESMODELSINGLETON_H
+#define DOLPHINPLACESMODELSINGLETON_H
+
+#include <QString>
+#include <QScopedPointer>
+
+class KFilePlacesModel;
+
+/**
+ * @brief Provides a global KFilePlacesModel instance.
+ */
+class DolphinPlacesModelSingleton
+{
+
+public:
+    static DolphinPlacesModelSingleton& instance();
+
+    KFilePlacesModel *placesModel() const;
+    /** A suffix to the application-name of the stored bookmarks is
+     added, which is only read by PlacesItemModel. */
+    static QString applicationNameSuffix();
+
+    DolphinPlacesModelSingleton(const DolphinPlacesModelSingleton&) = delete;
+    DolphinPlacesModelSingleton& operator=(const DolphinPlacesModelSingleton&) = delete;
+
+private:
+    DolphinPlacesModelSingleton();
+
+    QScopedPointer<KFilePlacesModel> m_placesModel;
+};
+
+#endif // DOLPHINPLACESMODELSINGLETON_H