Sourcecode hierarchy cleanup: Move further files from src to src/views

svn path=/trunk/KDE/kdebase/apps/; revision=1154150

1 files changed, 102 insertions, 0 deletions

diff --git a/src/views/draganddrophelper.h b/src/views/draganddrophelper.h
new file mode 100644
index 000000000..3cb506c43
--- /dev/null
+++ b/src/views/draganddrophelper.h
@@ -0,0 +1,102 @@
+/***************************************************************************
+ *   Copyright (C) 2007 by Peter Penz <[email protected]>                  *
+ *   Copyright (C) 2007 by David Faure <[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 DRAGANDDROPHELPER_H
+#define DRAGANDDROPHELPER_H
+
+#include "libdolphin_export.h"
+#include <QObject>
+#include <QPixmap>
+
+class DolphinViewController;
+class KFileItem;
+class KUrl;
+class QDropEvent;
+class QAbstractItemView;
+class QMimeData;
+class QWidget;
+
+/**
+ * @brief Helper class for having a common drag and drop behavior.
+ *
+ * The class is used by DolphinIconsView, DolphinDetailsView,
+ * DolphinColumnView and PanelTreeView to have a consistent
+ * drag and drop behavior between all views.
+ */
+class LIBDOLPHINPRIVATE_EXPORT DragAndDropHelper : public QObject
+{
+    Q_OBJECT
+
+public:
+    static DragAndDropHelper& instance();
+
+    /**
+     * Returns true, if Dolphin supports the dragging of
+     * the given mime data.
+     */
+    bool isMimeDataSupported(const QMimeData* mimeData) const;
+
+    /**
+     * Creates a drag object for the view \a itemView for all selected items.
+     */
+    void startDrag(QAbstractItemView* itemView,
+                   Qt::DropActions supportedActions,
+                   DolphinViewController* dolphinViewController = 0);
+
+    /**
+     * Returns true if and only if the view \a itemView was the last view to 
+     * be passed to startDrag(...), and that drag is still in progress.
+     */
+    bool isDragSource(QAbstractItemView* itemView) const;
+
+    /**
+     * Handles the dropping of URLs to the given
+     * destination. A context menu with the options
+     * 'Move Here', 'Copy Here', 'Link Here' and
+     * 'Cancel' is offered to the user.
+     * @param destItem  Item of the destination (can be null, see KFileItem::isNull()).
+     * @param destPath  Path of the destination.
+     * @param event     Drop event.
+     * @param widget    Source widget where the dragging has been started.
+     */
+    void dropUrls(const KFileItem& destItem,
+                  const KUrl& destPath,
+                  QDropEvent* event,
+                  QWidget* widget);
+signals:
+    void errorMessage(const QString& msg);
+
+private:
+    DragAndDropHelper();
+    
+    /**
+     * Creates a pixmap the contains the all icons of the items
+     * that are dragged.
+     */
+    QPixmap createDragPixmap(QAbstractItemView* itemView) const;
+    
+    // The last view passed in startDrag(...), or 0 if
+    // no startDrag(...) initiated drag is in progress.
+    QAbstractItemView *m_dragSource;
+
+    friend class DragAndDropHelperSingleton;
+};
+
+#endif