vrfTreeWidget.h

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/******************************************************************************
** Copyright (c) 2015 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/



#pragma once

#include <vrfGuiCommonQt/vrfGuiCommonQt.h>
#include <vrfGuiCommonQt/treeWidget.h>
#include <vrvCore/DtUniqueID.h>

#include <boost/signals2.hpp>

namespace makVrv
{
   class DtDe;
}

namespace makVrf
{
   class DT_DLL_VRFGUICOMMONQT DtVrfTreeWidget : public DtTreeWidget
   {
      Q_OBJECT

   public:
      DtVrfTreeWidget( makVrv::DtDe& de, QWidget* parent = 0 );

      virtual ~DtVrfTreeWidget() override;

      boost::signals2::signal<void (const QStringList& children, makVrv::DtUniqueID parentId)> signal_reparent;

      virtual void startDrag(Qt::DropActions supportedActions) override;
      QTreeWidgetItem* draggingOver() const { return myDraggingOver; };

      virtual void setChangeCursorWhenOverItem(bool);
      bool changeCursorWhenOverItem() const
      {
         return myChangeCursorWhenOverItem;
      }

   protected:
      virtual QMimeData* mimeData(const QList<QTreeWidgetItem*> list) const override;
      virtual void dragEnterEvent(QDragEnterEvent* event) override;
      virtual bool dropMimeData(
         QTreeWidgetItem* parent, int index, const QMimeData* mimeData, Qt::DropAction action) override;
      virtual void dragMoveEvent(QDragMoveEvent* event) override;
      virtual void updateDraggingOver(QDragMoveEvent*);
      virtual void dragLeaveEvent(QDragLeaveEvent* e) override;
      virtual bool viewportEvent(QEvent *event) override;
      virtual void mousePressEvent(QMouseEvent *event) override;

   protected:
      virtual bool canDropOnItem(QTreeWidgetItem*, const QStringList& globalIds, QDragMoveEvent* event) const;

      virtual void dropItems(const QStringList& globalIds, QTreeWidgetItem*);

   protected:
      QTreeWidgetItem* myDraggingOver;
      bool myChangeCursorWhenOverItem;
   };
}