/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  OpenFlipper is free software: you can redistribute it and/or modify      *
 *  it under the terms of the GNU Lesser General Public License as           *
 *  published by the Free Software Foundation, either version 3 of           *
 *  the License, or (at your option) any later version with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  OpenFlipper 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 Lesser General Public License for more details.                      *
 *                                                                           *
 *  You should have received a copy of the GNU LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision$                                                         *
 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/



//=============================================================================
//
//  CLASS CoreWidget - IMPLEMENTATION
//
//=============================================================================


//== INCLUDES =================================================================

// -------------------- mview
#include "CoreWidget.hh"

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
#include <OpenFlipper/common/GlobalOptions.hh>
#include "../../common/GlobalOptions.hh"

//== IMPLEMENTATION ==========================================================

void CoreWidget::slotCustomContextMenu( const QPoint& _point ) {

  QPoint   popupPosition;
  QPoint   scenePos;

  // Calculate popup position. Use the position from the viewer which was clicked on.
  popupPosition =  examiner_widgets_[PluginFunctions::activeExaminer()]->glMapToGlobal(_point);
  QPointF f = examiner_widgets_[PluginFunctions::activeExaminer()]->mapToScene(QPointF(_point.x(), _point.y()));
  scenePos = QPoint (f.x(), f.y());

  // Call function to adapt the menu to the currently used contex.
  updatePopupMenu(scenePos);

  // If the menu is not correctly initialized, dont try to show it.
  if ( !contextMenu_->isEmpty () )
    contextMenu_->popup( popupPosition );

}

/** \brief Update context Menu when an arbitrary node has been clicked on.
 *
 * This function is called when a node has been clicked on not belonging to an object.
 * This context menu will show all function relevant for the Node.
 *
 * @param _menu Pointer to the context Menu
 * @param _node node which has been clicked on.
 */
void CoreWidget::updatePopupMenuNode(QMenu* _menu , ACG::SceneGraph::BaseNode* _node) {

  QString nodeName = QString(_node->name().c_str());
  QAction* typeEntry = new QAction( nodeName ,_menu );
  _menu->addAction( typeEntry );

  _menu->addSeparator();

  emit updateContextMenuNode(_node->id());

  addContextMenus( _menu , CONTEXTNODEMENU, _node->id() ) ;
}

/** \brief Update context Menu when Coordsys node has been clicked on.
 *
 * This function is called when the coordinate system in a viewer has been clicked on.
 * This context menu will show all function relevant for the current view like the
 * projection/viewing direction...
 *
 * @param _menu Pointer to the context Menu
 * @param _part id of the coordsys part which has been clicked on.
 */
void CoreWidget::updatePopupMenuCoordsysNode(QMenu* _menu  , const int /*_part*/) {
//   std::cerr << "Coordsys part was : " << _part << std::endl;
  QAction* typeEntry = new QAction(tr("Viewer Settings"),_menu);
  _menu->addAction( typeEntry );
  _menu->addSeparator();

  //====================================================================================================
  // DrawModes
  //====================================================================================================
  slotUpdateViewerDrawMenu();
  _menu->addMenu( viewerDrawMenu_ );

  //====================================================================================================
  // RenderingOptions
  //====================================================================================================

  QMenu* renderingOptionsMenu = new QMenu(tr("Rendering Options"),_menu);
  renderingOptionsMenu->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"core_renderingOptions.png") );
  _menu->addMenu(renderingOptionsMenu);

  QAction* projectionAction = 0;
  if ( examiner_widgets_[PluginFunctions::activeExaminer() ]->projectionMode() == glViewer::PERSPECTIVE_PROJECTION ) {
    projectionAction = new QAction( tr("Switch to Orthogonal Projection"), renderingOptionsMenu );
    projectionAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
    projectionAction->setToolTip(   tr("Switch to perspective orthogonal mode."));
  } else {
    projectionAction = new QAction( tr("Switch to Perspective Projection"), renderingOptionsMenu );
    projectionAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"perspective.png") );
    projectionAction->setToolTip(   tr("Switch to perspective projection mode."));
  }

  projectionAction->setCheckable( false );
  projectionAction->setToolTip(   tr("Switch between <b>perspective</b> and "
      "<b>parrallel</b> projection mode."));
  projectionAction->setWhatsThis( tr("Switch projection modes<br><br>"
      "Switch between <b>perspective</b> and "
      "<b>parrallel</b> projection mode."));
  connect( projectionAction,SIGNAL( triggered() ), this, SLOT( slotContextSwitchProjection() ) );
  renderingOptionsMenu->addAction( projectionAction );


  QAction* animation = renderingOptionsMenu->addAction(tr("Animation"));

  animation->setToolTip(tr("Animate rotation of objects"));
  animation->setCheckable( true );
  animation->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"animation.png") );
  animation->setChecked( PluginFunctions::viewerProperties(PluginFunctions::activeExaminer()).animation() );
  connect(animation, SIGNAL(triggered(bool)), this , SLOT( slotLocalChangeAnimation(bool) ) );


  //====================================================================================================

  QAction* backfaceCulling = renderingOptionsMenu->addAction(tr("Backface Culling"));
  backfaceCulling->setToolTip(tr("Enable backface culling"));
  backfaceCulling->setCheckable( true );
  backfaceCulling->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"backFaceCulling.png") );
  backfaceCulling->setChecked( PluginFunctions::viewerProperties().backFaceCulling() );
  connect(backfaceCulling, SIGNAL(triggered(bool)), this , SLOT( slotLocalChangeBackFaceCulling(bool) ) );

  //====================================================================================================

  QAction* twoSidedLighting = renderingOptionsMenu->addAction(tr("Two-sided Lighting"));
  twoSidedLighting->setToolTip(tr("Enable two-sided lighting"));
  twoSidedLighting->setCheckable( true );
  twoSidedLighting->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"twosidedLighting.png") );
  twoSidedLighting->setChecked( PluginFunctions::viewerProperties().twoSidedLighting() );
  connect(twoSidedLighting, SIGNAL(triggered(bool)), this , SLOT( slotLocalChangeTwoSidedLighting(bool) ) );
  
  //====================================================================================================

  QAction* multisampling = renderingOptionsMenu->addAction(tr("Multisampling"));
  multisampling->setToolTip(tr("Enable Multisampling"));
  multisampling->setCheckable( true );
// TODO:Add icon for multisampling  
//   twoSidedLighting->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"twosidedLighting.png") );
  multisampling->setChecked( PluginFunctions::viewerProperties().multisampling() );
  connect(multisampling, SIGNAL(triggered(bool)), this , SLOT( slotLocalChangeMultisampling(bool) ) );   


  //============================================================================================================
  // Viewing Direction Menu
  //============================================================================================================

  QMenu* viewingDirectionMenu = new QMenu( tr("Viewing Direction"), _menu);
//   viewingDirectionMenu->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"renderingOptions.png"));
  _menu->addMenu(viewingDirectionMenu);

  QActionGroup* dirGroup = new QActionGroup(this);

  QAction* viewAction;
  // freeView
  viewAction = new QAction( tr("Free View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_FREE );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_FREE );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  viewingDirectionMenu->addSeparator();
  // TOP
  viewAction = new QAction( tr("Top View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_TOP );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_TOP );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  // BOTTOM
  viewAction = new QAction( tr("Bottom View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_BOTTOM );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_BOTTOM );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  // LEFT
  viewAction = new QAction( tr("Left View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_LEFT );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_LEFT );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  // RIGHT
  viewAction = new QAction( tr("Right View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_RIGHT );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_RIGHT );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  // FRONT
  viewAction = new QAction( tr("Front View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_FRONT );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_FRONT );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);
  // BACK
  viewAction = new QAction( tr("Back View"), viewingDirectionMenu );
//   viewAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"orthogonal.png") );
  viewAction->setCheckable( true );
  viewAction->setData( PluginFunctions::VIEW_BACK );
  viewAction->setChecked( PluginFunctions::viewerProperties().currentViewingDirection() == PluginFunctions::VIEW_BACK );
  viewingDirectionMenu->addAction( viewAction );
  dirGroup->addAction(viewAction);

  connect( dirGroup, SIGNAL(triggered(QAction*)), this, SLOT(slotSetViewingDirection(QAction*) ) );

  //====================================================================================================
  // Other Toplevel Action
  //====================================================================================================

  _menu->addSeparator();

  //====================================================================================================

  QAction* homeAction = new QAction(tr("Restore home view"),_menu);
  homeAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"go-home.png") );
  homeAction->setCheckable( false );
  homeAction->setToolTip(tr("Restore <b>home</b> view."));
  homeAction->setWhatsThis( tr("Restore home view<br><br>"
                            "Resets the view to the home view"));
  _menu->addAction( homeAction );
  connect( homeAction,SIGNAL( triggered() ), this, SLOT( slotContextHomeView() ) );

  QAction* setHomeAction = new QAction( tr("Set Home View") , _menu );
  setHomeAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"set-home.png") );
  setHomeAction->setCheckable( false );
  setHomeAction->setToolTip(tr("Set <b>home</b> view"));
  setHomeAction->setWhatsThis( tr("Store home view<br><br>"
                               "Stores the current view as the home view"));
  _menu->addAction( setHomeAction);
  connect( setHomeAction,SIGNAL( triggered() ), this, SLOT( slotContextSetHomeView() ) );

  QAction* viewAllAction = new QAction( tr("View all"), _menu );
  viewAllAction->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"viewall.png") );
  viewAllAction->setCheckable( false );
  viewAllAction->setToolTip(tr("View all."));
  viewAllAction->setWhatsThis( tr("View all<br><br>"
                                  "Move the objects in the scene so that"
                                  " the whole scene is visible."));
  connect( viewAllAction,SIGNAL( triggered() ), this, SLOT( slotContextViewAll() ) );
  _menu->addAction( viewAllAction);


  _menu->addSeparator();

  //====================================================================================================

  QAction* copyView = _menu->addAction(tr("Copy View"));
  copyView->setToolTip(tr("Copy current view to clipboard"));
  copyView->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"edit-copy.png") );
  connect(copyView, SIGNAL(triggered()), this, SLOT(slotCopyView()) );

  //====================================================================================================

  QAction* pasteView = _menu->addAction(tr("Paste View"));
  pasteView->setToolTip(tr("Paste current view from clipboard"));
  pasteView->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"edit-paste.png") );
  connect(pasteView, SIGNAL(triggered()), this , SLOT( slotPasteView( ) ) );

  //====================================================================================================

  QAction* snapshot = _menu->addAction(tr("Snapshot"));
  snapshot->setToolTip(tr("Make a snapshot"));
  snapshot->setIcon( QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"snapshot.png") );
  connect(snapshot, SIGNAL(triggered()), this, SLOT( slotSnapshot() ) );

}

/** \brief Update context Menu when background has been clicked on.
 *
 * This function is called when the background in a viewer has been clicked on.
 * This context menu will show functions which are related to the background of the
 * viewer.
 *
 * @param _menu Pointer to the context Menu
 * @param _point position in the viewer where the user clicked.
 */
void CoreWidget::updatePopupMenuBackground(QMenu* _menu , const QPoint& /*_point*/) {

  //====================================================================================================
  // DrawModes
  //====================================================================================================
  slotUpdateViewerDrawMenu();
  _menu->addMenu( viewerDrawMenu_ );

  _menu->addSeparator();

  QAction* action = _menu->addAction(tr("Set Background Color"));
  action->setToolTip(tr("Set the background color for the current viewer"));
  action->setStatusTip(tr("Set the background color for the current viewer"));
  action->setWhatsThis(tr("Set the background color for the current viewer"));
  action->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"BackgroundColor.png") );
  connect(action, SIGNAL(triggered()), this, SLOT(slotSetContextBackgroundColor()) );

  /*
   * Show coordsys context menu of coordsys if
   * invisible...
   */

  ACG::SceneGraph::BaseNode* root = PluginFunctions::getSceneGraphRootNode();
  ACG::SceneGraph::BaseNode* coordSys = root->find("Core Coordsys Node");

  if(!coordSys->visible()) {

	  if(!coordSysMenu_) {
		  coordSysMenu_ = new QMenu(tr("Viewer Settings"), _menu);
		  updatePopupMenuCoordsysNode(coordSysMenu_, 0);
	  }
	  _menu->addSeparator();
	  _menu->addMenu(coordSysMenu_);
  }

  // Tell Plugins to update their context Menu
  emit updateContextMenuBackground();

  addContextMenus( _menu , CONTEXTBACKGROUNDMENU ) ;

}

/** \brief Update context Menu an object has been clicked on.
 *
 * This function is called when an object has been clicked on.
 * This context menu will show all properties for the given object.
 *
 * @param _menu Pointer to the context Menu
 * @param _objectId Id of the object that has been clicked on.
 */
void CoreWidget::updatePopupMenuObject(QMenu* _menu , BaseObjectData* _object ) {

  QAction* typeEntry = new QAction( typeName(_object->dataType()) ,_menu);
  typeEntry->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+ typeIcon(_object->dataType()) ));
  _menu->addAction( typeEntry );

  _menu->addSeparator( );

  // Tell Plugins to update their context Menu
  emit updateContextMenu(_object->id() );

  if ( addContextMenus( _menu , CONTEXTOBJECTMENU , _object->id() ) )
    _menu->addSeparator();

  // Add picking Menu
  if (pickMenu_ != 0 && pickMenu_->actions().size() > 0) {
    pickMenu_->setTitle(tr("&Picking"));
    contextMenu_->addMenu( pickMenu_ );
    pickMenu_->setTearOffEnabled(true);
  }
}

bool CoreWidget::addContextMenus( QMenu* _menu , ContextMenuType _type , int _id ) {

  bool added = false;

  QMap< QString , QAction* > menuMap; //QMap sorts by key
  QMap< QString , QAction* > actionMap;

  // Add context menus from plugins
  for ( uint i = 0 ; i < contextMenus_.size(); ++i ) {

    if ( contextMenus_[i].type != _type )
      continue;

    switch (contextMenus_[i].type) {
      case CONTEXTBACKGROUNDMENU:
        break;
      case CONTEXTOBJECTMENU:
        BaseObjectData* object;
        if ( !PluginFunctions::getObject(_id, object) ) {
          emit log(LOGERR,tr("Cant get object for objectContextMenu"));
          continue;
        }

        // Datatype does not match
        if ( ! object->dataType(  contextMenus_[i].contextType ) )
          continue;

        break;
      case CONTEXTNODEMENU:
        break;

    }

    QMenu* menu = contextMenus_[i].action->menu();

    if (menu == 0) //is it a menu
      actionMap[ contextMenus_[i].action->text() ] = contextMenus_[i].action;
    else
      menuMap[ contextMenus_[i].action->text() ] = contextMenus_[i].action;

    added = true;

    // Get all Actions in the menu and its submenus.
    // Set their data to the picked Object id


    QList< QAction *> allActions;
    if ( menu == 0) {
      allActions.push_back(contextMenus_[i].action);
    } else {
      allActions = menu->actions();
    }

    while ( !allActions.empty() ) {
      QList< QAction *> tmpList;

      // Set userdata of all actions to the picked Object Id
      for ( int j = 0 ; j < allActions.size(); ++j ) {
        allActions[j]->setData( QVariant( _id ) );
        if ( allActions[j]->menu() != 0 )
          tmpList << allActions[j]->menu()->actions();
      }

      allActions = tmpList;
    }

  }

  //first add all menus
  QMapIterator<QString, QAction*> it(menuMap);

  while (it.hasNext()) {
     it.next();
    _menu->addAction( it.value() );
  }

  _menu->addSeparator();

  //then all actions
  QMapIterator<QString, QAction*> it2(actionMap);

  while (it2.hasNext()) {
     it2.next();
    _menu->addAction( it2.value() );
  }

  return added;
}



/** \brief check current context and initialize context menu according to this context.
 *
 * This function is called whenever a context menu for the corewidget is requested.
 * It will decide about the current context, collect all menus for plugins and
 * construct the final context menu.
 */
void CoreWidget::updatePopupMenu(const QPoint& _point) {

  // Clear the complete context menu.
  contextMenu_->clear();

  // Clear the selection context menu part.
  contextSelectionMenu_->clear();

  // =============================================================================
  // First do a picking on the current position to check which context we are in.
  // =============================================================================
  int objectId = -1;

  enum CONTEXTTYPE {
    COORDSYSCONTEXT ,BACKGROUNDCONTEXT ,OBJECTCONTEXT, NODECONTEXT
  } context = BACKGROUNDCONTEXT;

  // Do picking in the gl area to find an object
  unsigned int               node_idx, target_idx;
  ACG::Vec3d                 hit_point;
  BaseObjectData*            object;
  ACG::SceneGraph::BaseNode* node = 0;

  if (examiner_widgets_[PluginFunctions::activeExaminer()]->pick( ACG::SceneGraph::PICK_ANYTHING,_point,node_idx, target_idx, &hit_point ) ) {

    if ( PluginFunctions::getPickedObject(node_idx, object) ) {
      objectId = object->id();
      context  = OBJECTCONTEXT;
    } else {
      node = ACG::SceneGraph::find_node( PluginFunctions::getSceneGraphRootNode() , node_idx );
      if ( node != 0 && ( node->name() == "Core Coordsys Node") )
        context = COORDSYSCONTEXT;
      else
        context = NODECONTEXT;
    }
  }

  // =============================================================================
  // Depending on the context create the basic context menu.
  // =============================================================================

  QIcon icon;

  switch (context) {
    case BACKGROUNDCONTEXT:
      updatePopupMenuBackground(contextMenu_,_point);
      return;
      break;
    case OBJECTCONTEXT:
      updatePopupMenuObject(contextMenu_ , object );
      return;
      break;
    case COORDSYSCONTEXT:
      updatePopupMenuCoordsysNode(contextMenu_,target_idx);
      return;
      break;
    case NODECONTEXT:
      updatePopupMenuNode(contextMenu_,node);
      return;
      break;
  }

}


void CoreWidget::slotSnapshotName() {
  std::cerr << "Todo : slotSnapShotName only sets name for current viewer" << std::endl;

  QString fname = PluginFunctions::viewerProperties().snapshotName();

  fname.replace('%', '$');
  fname = QFileDialog::getSaveFileName ( 0, tr("Save snapshot name") );
  if (!fname.isEmpty())
  {
    fname.replace('$', '%');

    PluginFunctions::viewerProperties().snapshotBaseFileName(fname);
    QString msg=tr("next snapshot: ");
    statusBar()->showMessage(msg);
  }

}

void CoreWidget::slotAddContextItem(QAction* _entry, ContextMenuType _type) {
  MenuInfo info;
  info.action = _entry;
  info.type   = _type;

  contextMenus_.push_back(info);
}

void CoreWidget::slotAddContextItem( QAction* _entry , DataType _dataType ,ContextMenuType _type ) {
  MenuInfo info;
  info.action      = _entry;
  info.contextType = _dataType;
  info.type        = _type;

  contextMenus_.push_back(info);
}

void CoreWidget::slotUpdateViewerDrawMenu() {
  if ( drawGroupViewer_ ) {

    disconnect( drawGroupViewer_ , SIGNAL( triggered( QAction * ) ),
                this             , SLOT( slotViewerDrawMenu( QAction * ) ) );
    delete( drawGroupViewer_ );
    drawGroupViewer_ = 0;

  }

  // Recreate drawGroup
  drawGroupViewer_ = new QActionGroup( this );
  drawGroupViewer_->setExclusive( false );

  connect( drawGroupViewer_ , SIGNAL( triggered( QAction * ) ),
           this       , SLOT( slotViewerDrawMenu( QAction * ) ) );

  if ( !viewerDrawMenu_ ) {

    QIcon icon;
    icon.addFile(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"drawModes.png");
    viewerDrawMenu_  = new QMenu(tr("Set Draw Mode"));
    viewerDrawMenu_->setTearOffEnabled(true);
    viewerDrawMenu_->setIcon(icon);

    connect(viewerDrawMenu_,SIGNAL(aboutToShow () ) , this, SLOT(slotUpdateGlobalDrawMenu() ) );
  }

  // Collect available draw Modes
  ACG::SceneGraph::CollectDrawModesAction actionAvailable;
  ACG::SceneGraph::traverse( PluginFunctions::getRootNode() , actionAvailable);
  availableGlobalDrawModes_ = actionAvailable.drawModes();

  // Get currently active drawModes (first viewer only )
  // TODO: create combination from all viewers!
  int activeDrawModes = PluginFunctions::drawMode();

  // Convert to ids
  std::vector< unsigned int > availDrawModeIds;
  availDrawModeIds = ACG::SceneGraph::DrawModes::getDrawModeIDs( availableGlobalDrawModes_ );

  viewerDrawMenu_->clear();

  for ( unsigned int i = 0; i < availDrawModeIds.size(); ++i )
  {
    unsigned int id    = availDrawModeIds[i];
    std::string  descr = ACG::SceneGraph::DrawModes::description( id );

    QAction * action = new QAction( descr.c_str(), drawGroupViewer_ );
    action->setCheckable( true );
    action->setChecked( ACG::SceneGraph::DrawModes::containsId( activeDrawModes, id ) );
  }

  viewerDrawMenu_->addActions( drawGroupViewer_->actions() );

}

void CoreWidget::slotViewerDrawMenu(QAction * _action) {

  //======================================================================================
  // Get the mode toggled
  //======================================================================================
  unsigned int mode = 0;
  std::vector< unsigned int > availDrawModeIds;
  availDrawModeIds = ACG::SceneGraph::DrawModes::getDrawModeIDs( availableGlobalDrawModes_ );
  for ( unsigned int i = 0; i < availDrawModeIds.size(); ++i )
  {
    QString descr = QString( ACG::SceneGraph::DrawModes::description( availDrawModeIds[i] ).c_str() );

    if ( descr == _action->text() ) {
      mode = availDrawModeIds[i];
      break;
    }
  }

  if ( qApp->keyboardModifiers() & Qt::ShiftModifier )
    PluginFunctions::viewerProperties().drawMode(  PluginFunctions::viewerProperties().drawMode() ^ mode );
  else
    PluginFunctions::viewerProperties().drawMode(mode );

}

//=============================================================================