org.eclipse.gef.DragTracker Java Examples

@Override
public DragTracker getDragTracker(Request req) {
	if (!supportsDragSelection())
		return super.getDragTracker(req);

	if (req instanceof SelectionRequest
		&& ((SelectionRequest) req).getLastButtonPressed() == 3)
		return new DeselectAllTracker(this) {

			protected boolean handleButtonDown(int button) {
				getCurrentViewer().select(CustomLaneCompartmentEditPart.this);
				return true;
			}
		};
	return new CustomRubberbandDragTracker() {

		protected void handleFinished() {
			if (getViewer().getSelectedEditParts().isEmpty())
				getViewer().select(CustomLaneCompartmentEditPart.this);
		}
	};
}
 

/**
 * Fills the given List with handles at each corner of a figure.
 * 
 * @param part
 *            the handles' GraphicalEditPart
 * @param handles
 *            the List to add the four corner handles to
 * @param tracker
 *            the handles' DragTracker
 * @param cursor
 *            the handles' Cursor
 */
public static void addCornerHandles( GraphicalEditPart part, List handles,
		DragTracker tracker, Cursor cursor )
{
	handles.add( createHandle( part,
			PositionConstants.SOUTH_EAST,
			tracker,
			cursor ) );
	handles.add( createHandle( part,
			PositionConstants.SOUTH_WEST,
			tracker,
			cursor ) );
	handles.add( createHandle( part,
			PositionConstants.NORTH_WEST,
			tracker,
			cursor ) );
	handles.add( createHandle( part,
			PositionConstants.NORTH_EAST,
			tracker,
			cursor ) );
}
 

/**
 * Performs direct edit on double click
 */
@Override
public DragTracker getDragTracker(final Request request) {
	return new DragEditPartsTrackerEx(this) {
		protected boolean isMove() {
			return true;
		}

		protected boolean handleDoubleClick(int button) {
			performDirectEditRequest(request);
			return super.handleDoubleClick(button);
		}
	};
}
 

/**
 * This method returns a dragTracker to use for multi-selection of
 * EditParts.
 */
@Override
public DragTracker getDragTracker(Request req) {
	// XXX Important notes here!
	//
	// The dragTracker is created from the very first EditPart that is
	// clicked during a selection. We can use this method to notify the
	// corresponding model for this EditPart that it was the first component
	// selected.
	//
	// Left mouse button = 1
	// Middle mouse button = 2
	// Right mouse button = 3
	//
	// The current behavior here:
	//
	// If the user left-clicks, return a marquee (drag) selection. The
	// marquee actually toggles everything inside its bounds, so
	// previously-selected nodes will be de-selected.
	//
	// If the user middle-clicks, nothing happens.
	//
	// If the user right-clicks, all nodes are deselected.

	// Process right-clicks differently.
	if (req instanceof SelectionRequest
			&& ((SelectionRequest) req).getLastButtonPressed() == 3) {
		return new DeselectAllTracker(this);
	}
	// Return a custom marquee tracker here for left clicks.
	return marquee;
}
 

@Override
public DragTracker getDragTracker(final Request req) {
    if (!supportsDragSelection()) {
        return super.getDragTracker(req);
    }

    if (req instanceof SelectionRequest
            && ((SelectionRequest) req).getLastButtonPressed() == 3) {
        return new DeselectAllTracker(this) {

            @Override
            protected boolean handleButtonDown(final int button) {
                getCurrentViewer().select(CustomPoolCompartmentEditPart.this);
                return true;
            }
        };
    }
    return new CustomRubberbandDragTracker() {

        @Override
        protected void handleFinished() {
            if (getViewer().getSelectedEditParts().isEmpty()) {
                getViewer().select(CustomPoolCompartmentEditPart.this);
            }
        }
    };
}
 

public DragTracker getDragTracker( Request req )
{
	DragEditPartsTracker track = new ReportElementDragTracker( this ) {

		/*
		 * (non-Javadoc)
		 * 
		 * @see org.eclipse.gef.tools.SelectEditPartTracker#handleButtonDown(int)
		 */
		protected boolean handleButtonDown( int button )
		{
			if ( getCurrentViewer( ) instanceof DeferredGraphicalViewer )
			{
				( (DeferredGraphicalViewer) getCurrentViewer( ) ).initStepDat( );
			}
			boolean bool = super.handleButtonDown( button );

			if ( ( button == 3 || button == 1 ) )
			// && isInState(STATE_INITIAL))
			{
				if ( getSourceEditPart( ) instanceof FirstLevelHandleDataItemEditPart )
				{
					FirstLevelHandleDataItemEditPart first = (FirstLevelHandleDataItemEditPart) getSourceEditPart( );
					if ( first.contains( getLocation( ) ) )
					{
						//MenuManager manager = new LevelCrosstabPopMenuProvider( getViewer( ) );
						manager.createContextMenu( getViewer( ).getControl( ) );
						Menu menu = manager.getMenu( );
						
						menu.setVisible( true );
						return true;
					}
				}
			}
			return bool;
		}
	};
	return track;
}
 

protected DragTracker createDragTracker( )
{
	CrosstabHandleAdapter adapter = ((CrosstabTableEditPart)getOwner( ).getParent( )).getCrosstabHandleAdapter( );
	if (cursorDirection == PositionConstants.EAST && 
			(adapter.getColumnOprationCell( start )!=null||adapter.getColumnOprationCell( end )!=null))
	{
		return new CrosstabColumnDragTracker(getOwner( ), start, end);
	}
	if (cursorDirection == PositionConstants.SOUTH && adapter.getRowOprationCell( start ) != null)
	{
		return new CrosstabRowDragTracker(getOwner( ), start, end);
	}
	//return null;
	return new ResizeTracker( getOwner( ), cursorDirection )
	{
		protected void showTargetFeedback() 
		{
			
		}
		protected void eraseTargetFeedback() 
		{
		
		}
		
		protected void showSourceFeedback( )
		{
		}
		
		protected void eraseSourceFeedback( )
		{
		}
		
		protected Command getCommand( )
		{
			return UnexecutableCommand.INSTANCE;
		}
	};
}
 

@Override
public DragTracker getDragTracker(final Request request) {
	if (request instanceof SelectionRequest && ((SelectionRequest) request).getLastButtonPressed() == 3)
		return null;
	IDoubleClickCallback callback = new IDoubleClickCallback() {
		public void handleDoubleClick(int btn) {
			performDirectEditRequest(request);
		}
	};
	return new DoubleClickDirectEditDragTracker(this, getTopGraphicEditPart(), callback);
}
 

/**
 * Performs direct edit on double click
 */
@Override
public DragTracker getDragTracker(final Request request) {
	if (request instanceof SelectionRequest && ((SelectionRequest) request).getLastButtonPressed() == 3)
		return null;
	IDoubleClickCallback callback = new IDoubleClickCallback() {

		@Override
		public void handleDoubleClick(int btn) {
			performDirectEditRequest(request);
		}
	};
	return new DoubleClickDirectEditDragTracker(this, getTopGraphicEditPart(), callback);
}
 

@Override
protected DragTracker createDragTracker() {
	if (getOwner() instanceof CustomPoolEditPart){
		GraphicalEditPart target = getOwner();
	    CustomPoolEditPart pool = (CustomPoolEditPart)getOwner();
		for (Object o:pool.getChildren()){
			if (o instanceof CustomPoolCompartmentEditPart){
				for (Object o2:((CustomPoolCompartmentEditPart)o).getChildren()){
					if (o2 instanceof CustomLaneEditPart){
					    target = (CustomLaneEditPart)o2;
					}
				}
			}
		}
		
		return new ResizeTracker(target, cursorDirection){
			@Override
			protected GraphicalEditPart getTargetEditPart() {
				return getOwner();
			}
			
			@Override
			protected List getOperationSet() {
				List operationSet = new ArrayList();
				operationSet.add(getOwner());
				return operationSet;
			}
		};
	}
	return new ResizeTracker(getOwner(),cursorDirection);


}
 

public DragTracker getDragTracker( Request req )
{
	if ( req instanceof SelectionRequest
			&& ( (SelectionRequest) req ).getLastButtonPressed( ) == 3 )
		return new DeselectAllTracker( this );
	return new RootDragTracker( );
}
 

public DragTracker getDragTracker( Request req )
{

	return new DragEditPartsTracker( this ) {

		protected boolean handleDragInProgress( )
		{
			return true;
		}
	};
}
 

protected DragTracker createDragTracker( )
{
	
	if (cursorDirection == PositionConstants.EAST )
	{
		return new ColumnDragTracker(getOwner( ).getParent( ), start, end);
	}
	if (cursorDirection == PositionConstants.SOUTH)
	{
		return new RowDragTracker(getOwner( ).getParent( ), start, end);
	}
	//return null;
	return new ResizeTracker( getOwner( ), cursorDirection )
	{
		protected void showTargetFeedback() 
		{
			
		}
		protected void eraseTargetFeedback() 
		{
		
		}
		
		protected void showSourceFeedback( )
		{
		}
		
		protected void eraseSourceFeedback( )
		{
		}
		
		protected Command getCommand( )
		{
			return UnexecutableCommand.INSTANCE;
		}
	};
}
 

@Override
protected DragTracker createDragTracker( )
{
	return tracker;
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

protected DragTracker createDragTracker( )
{
	return new ColumnTracker( (TableEditPart) getOwner( ),
			columnNumber,
			this );
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

@Override
public DragTracker getDragTracker(Request request) {
	return new DragEditPartsTrackerExWithoutCopyWithModKeyPressed(this);
}
 

/**
 * {@inheritDoc}
 */
@Override
public DragTracker getDragTracker(Request req) {
	return new SelectEditPartTracker(this);
}
 

protected DragTracker createDragTracker( )
{
	return null;
}
 

protected DragTracker createDragTracker( )
{
	return new RowTracker( (TableEditPart) getOwner( ), rowNumber, this );
}