org.eclipse.gef.Handle Java Examples

@Override
protected void createDefaultEditPolicies() {
	super.createDefaultEditPolicies();
	installEditPolicy(EditPolicy.COMPONENT_ROLE, new TransitionExpressionComponentEditPolicy());
	installEditPolicy(EditPolicy.SELECTION_FEEDBACK_ROLE, new ContextSensitiveHelpPolicy(
			HelpContextIds.SC_PROPERTIES_TRANSITION_EXPRESSION));
	// BUGFIX:
	// https://code.google.com/a/eclipselabs.org/p/yakindu/issues/detail?id=26
	installEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE, new NonResizableLabelEditPolicy() {
		@Override
		protected void replaceHandleDragEditPartsTracker(Handle handle) {
			if (handle instanceof AbstractHandle) {
				AbstractHandle h = (AbstractHandle) handle;
				h.setDragTracker(new DragEditPartsTrackerEx(getHost()) {
					protected boolean isMove() {
						return true;
					};
				});
			}
		}
	});
}
 

/**
	 * Updates the target editpart and returns <code>true</code> if the target changes.  The
	 * target is updated by using the target conditional and the target request.  If the
	 * target has been locked, this method does nothing and returns <code>false</code>.
	 * @return <code>true</code> if the target was changed
	 */
//	protected EditPart getEditPartUnderMouse() {
//		
//			Collection exclude = getExclusionSet();
//			EditPart editPart = getCurrentViewer().findObjectAtExcluding(
//				getLocation(),
//				exclude,
//				getTargetingConditional());
//			if (editPart != null)
//				return editPart.getTargetEditPart(getTargetRequest());
//			return null;
//			
//	}
	protected Handle getHandleUnderMouse()
	{
		return ((DeferredGraphicalViewer)(getSourceEditPart().getViewer())).findHandleAt(getLocation());
	}
 

/**
 * @see GraphicalViewer#findHandleAt(org.eclipse.draw2d.geometry.Point)
 */
public Handle findHandleAt( Point p )
{
	LayerManager layermanager = (LayerManager) getEditPartRegistry( ).get( LayerManager.ID );
	if ( layermanager == null )
		return null;
	List list = new ArrayList( 3 );
	// list.add(layermanager.getLayer(LayerConstants.PRIMARY_LAYER));
	list.add( layermanager.getLayer( LayerConstants.CONNECTION_LAYER ) );
	list.add( layermanager.getLayer( LayerConstants.FEEDBACK_LAYER ) );
	IFigure handle = getLightweightSystem( ).getRootFigure( )
			.findFigureAtExcluding( p.x, p.y, list );
	if ( handle instanceof Handle )
		return (Handle) handle;
	return null;
}
 

static Handle createHandle( GraphicalEditPart owner, int direction,
		DragTracker tracker, Cursor cursor )
{
	ReportResizeHandle handle = new ReportResizeHandle( owner, direction );
	handle.setDragTracker( tracker );
	handle.setCursor( cursor );
	return handle;
}
 

public boolean isDealwithDrag( )
{
	Handle handle = getHandleUnderMouse( );
	if ( handle instanceof RowHandle )
	{
		return ( (RowHandle) handle ).getOwner( ) == getSourceEditPart( );
	}
	return false;
	// EditPart part = getEditPartUnderMouse();
	// return part instanceof TableEditPart.DummyColumnEditPart ||
	// isSameTable();
}
 

public boolean isDealwithDrag( )
{
	Handle handle = getHandleUnderMouse( );
	if ( handle instanceof ColumnHandle )
	{
		return ( (ColumnHandle) handle ).getOwner( ) == getSourceEditPart( );
	}
	return false;
	// EditPart part = getEditPartUnderMouse();
	// return part instanceof TableEditPart.DummyColumnEditPart ||
	// isSameTable();
}
 

static Handle createHandle( GraphicalEditPart owner, int direction,
		DragTracker tracker, Cursor cursor )
{
	ReportResizeHandle handle = new ReportResizeHandle( owner, direction );
	handle.setCursor( cursor );
	handle.setDragTracker( tracker );
	return handle;
}
 

static Handle createHandle( GraphicalEditPart owner, int direction )
{
	ReportResizeHandle handle = new ReportResizeHandle( owner, direction );
	handle.setCursor( SharedCursors.SIZEALL );
	handle.setDragTracker( new DragEditPartsTracker( owner ) );
	return handle;
}
 

static Handle createHandle( TableCellEditPart owner )
{

	TableEditPart part = (TableEditPart) owner.getParent( );
	Rectangle rect = part.getSelectBounds( );

	TableSelectionHandle handle = new TableSelectionHandle( owner, rect );
	handle.setCursor( SharedCursors.SIZEALL );

	return handle;
}
 

/**
 * @param owner
 * @return
 */
static Handle createHandle( CrosstabCellEditPart owner )
{

	CrosstabTableEditPart part = (CrosstabTableEditPart) owner.getParent( );
	Rectangle rect = part.getSelectBounds( );

	TableSelectionHandle handle = new TableSelectionHandle( owner, rect );
	handle.setCursor( SharedCursors.SIZEALL );

	return handle;
}
 

static Handle createHandle( GraphicalEditPart owner, int direction )
{
	ReportResizeHandle handle = new ReportResizeHandle( owner, direction );
	// handle.setDragTracker(new ResizeTracker(direction));
	return handle;
}
 

static Handle createHandle(final GraphicalEditPart owner, final int direction) {
    final ResizeHandle handle = new ERDiagramResizeHandle(owner, direction);
    return handle;
}
 

static Handle createRowHandle( TableEditPart owner )
{
	TableRowHandle handle = new TableRowHandle( owner );
	return handle;

}
 

static Handle createColumnHandle( TableEditPart owner )
{
	TableColumnHandle handle = new TableColumnHandle( owner );
	return handle;

}
 

static Handle createHandle(GraphicalEditPart owner, int direction) {
    final ResizeHandle handle = new ERDiagramResizeHandle(owner, direction);
    return handle;
}
 

static Handle createHandle(GraphicalEditPart owner, int direction) {
	ResizeHandle handle = new ERDiagramResizeHandle(owner, direction);
	return handle;
}
 

/**
 * Returns a new {@link MoveHandle} with the given owner.
 * 
 * @param owner
 *            the GraphicalEditPart that is the owner of the new MoveHandle
 * @return the new MoveHandle
 */
public static Handle moveHandle( GraphicalEditPart owner )
{
	return new ReportMoveHandle( owner );
}
 

/**
 * Returns a new {@link MoveHandle} with the given owner.
 * 
 * @param owner
 *            the GraphicalEditPart that is the owner of the new MoveHandle
 * @return the new MoveHandle
 */
public static Handle moveHandle( GraphicalEditPart owner )
{
	return new ReportMoveHandle( owner );
}