DtContextTreeWidget.h

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/******************************************************************************
** Copyright (c) 2020 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#ifndef DtContextTreeWidget_H_
#define DtContextTreeWidget_H_

#include <vrvCoreQt/vrvCoreQt.h>
#include <vrvUtil/signalslib.h>

#include <QtWidgets/QTreeWidget>

class QMenu;
class QMouseEvent;
class QPoint;
class QPushButton;
class QIcon;

namespace makVrv
{
   class DT_DLL_VRVCOREQT DtContextTreeWidget : public QTreeWidget
   {
      Q_OBJECT

   public:
      class ContextMenuItem
      {
      public:
         ContextMenuItem()
         : myButton(0)
         , myReceiver(0)
         , mySlot(0)
         {
         }

         QPushButton*   myButton;
         QObject*       myReceiver;
         const char*    mySlot;
         QString        myTitle;
      };

      typedef std::vector<ContextMenuItem> DtContextMenuItems;

   public:
      DtContextTreeWidget(QWidget* parent = 0);

      virtual ~DtContextTreeWidget();

   public:
      // \brief Will add a context menu item for the specified button when creating the
      virtual void addContextItem(QPushButton* b, QObject* receiver, const char* slot);
      virtual void addContextItem(QPushButton* b, const QString& title, QObject* receiver, const char* slot);

      virtual void addContextItem(const QString& item, QObject* receiver, const char* slot,
         const QIcon& icon = QIcon());

      virtual void addContextSeparator();

      const DtContextMenuItems& menuItems() const;
      virtual void setMenuItems(const DtContextMenuItems&);

      virtual void removeMenuItem(const QString&);

      virtual void removeSeparator(int at = 1);

      bool rightClick() const
      {
         return myRightClick;
      }

   public:
      boost::signalslib::signal<void (DtContextTreeWidget*, QMenu*)> signal_contextMenuAboutToBeShown;

   protected slots:
      virtual void onButtonDestroyed();

   protected:
      virtual void processContextMenu(const QPoint&);

      virtual void mousePressEvent(QMouseEvent* mouseEvent);

      virtual void mouseReleaseEvent(QMouseEvent* mouseEvent);

      virtual void deleteIfOwned(const ContextMenuItem&);

   protected:
      bool                 myRightClick;
      DtContextMenuItems   myMenuItems;
   };
}

#endif