From 8b901df06891630e415e07b9bf0256a3670b1bdb Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Wed, 12 Mar 2014 14:38:00 +0100
Subject: [PATCH] + drag and drop on tree widget

---
 src/Gui/Tree.cpp | 27 +++++++++++++++++++++------
 src/Gui/Tree.h   |  6 ++++++
 2 files changed, 27 insertions(+), 6 deletions(-)

diff --git a/src/Gui/Tree.cpp b/src/Gui/Tree.cpp
index 5fd80e626f3b..2179b36f1e60 100644
--- a/src/Gui/Tree.cpp
+++ b/src/Gui/Tree.cpp
@@ -307,12 +307,6 @@ void TreeWidget::onActivateDocument(QAction* active)
     getMainWindow()->setActiveWindow(view);
 }
 
-bool TreeWidget::dropMimeData(QTreeWidgetItem *parent, int index,
-                              const QMimeData *data, Qt::DropAction action)
-{
-    return QTreeWidget::dropMimeData(parent, index, data, action);
-}
-
 Qt::DropActions TreeWidget::supportedDropActions () const
 {
     return QTreeWidget::supportedDropActions();
@@ -365,6 +359,11 @@ void TreeWidget::mouseDoubleClickEvent (QMouseEvent * event)
     }
 }
 
+void TreeWidget::startDrag(Qt::DropActions supportedActions)
+{
+    QTreeWidget::startDrag(supportedActions);
+}
+
 QMimeData * TreeWidget::mimeData (const QList<QTreeWidgetItem *> items) const
 {
     // all selected items must reference an object from the same document
@@ -394,6 +393,22 @@ QMimeData * TreeWidget::mimeData (const QList<QTreeWidgetItem *> items) const
     return QTreeWidget::mimeData(items);
 }
 
+bool TreeWidget::dropMimeData(QTreeWidgetItem *parent, int index,
+                              const QMimeData *data, Qt::DropAction action)
+{
+    return QTreeWidget::dropMimeData(parent, index, data, action);
+}
+
+void TreeWidget::dragEnterEvent(QDragEnterEvent * event)
+{
+    QTreeWidget::dragEnterEvent(event);
+}
+
+void TreeWidget::dragLeaveEvent(QDragLeaveEvent * event)
+{
+    QTreeWidget::dragLeaveEvent(event);
+}
+
 void TreeWidget::dragMoveEvent(QDragMoveEvent *event)
 {
     QTreeWidget::dragMoveEvent(event);
diff --git a/src/Gui/Tree.h b/src/Gui/Tree.h
index 3aea80ca81a4..7a50875e903b 100644
--- a/src/Gui/Tree.h
+++ b/src/Gui/Tree.h
@@ -78,12 +78,18 @@ class TreeWidget : public QTreeWidget, public SelectionObserver
     void onSelectionChanged(const SelectionChanges& msg);
     void contextMenuEvent (QContextMenuEvent * e);
     void drawRow(QPainter *, const QStyleOptionViewItem &, const QModelIndex &) const;
+    /** @name Drag and drop */
+    //@{
+    void startDrag(Qt::DropActions supportedActions);
     bool dropMimeData(QTreeWidgetItem *parent, int index, const QMimeData *data,
                       Qt::DropAction action);
     Qt::DropActions supportedDropActions () const;
     QMimeData * mimeData (const QList<QTreeWidgetItem *> items) const;
+    void dragEnterEvent(QDragEnterEvent * event);
+    void dragLeaveEvent(QDragLeaveEvent * event);
     void dragMoveEvent(QDragMoveEvent *event);
     void dropEvent(QDropEvent *event);
+    //@}
     bool event(QEvent *e);
     void keyPressEvent(QKeyEvent *event);
     void mouseDoubleClickEvent(QMouseEvent * event);