Java Code Examples for org.eclipse.gef.commands.UnexecutableCommand#INSTANCE

@Override
protected Command getCreateCommand(CreateViewRequest request) {
	StateEditPart parent = (StateEditPart) getHost().getParent();
	BooleanValueStyle isInline = GMFNotationUtil.getBooleanValueStyle(parent.getNotationView(),
			DiagramPartitioningUtil.INLINE_STYLE);
	if (isInline != null && !isInline.isBooleanValue())
		return UnexecutableCommand.INSTANCE;

	List<? extends ViewDescriptor> viewDescriptors = request.getViewDescriptors();
	for (ViewDescriptor viewDescriptor : viewDescriptors) {
		String semanticHint = viewDescriptor.getSemanticHint();
		if (ViewType.NOTE.equals(semanticHint) || ViewType.NOTEATTACHMENT.equals(semanticHint)
				|| ViewType.TEXT.equals(semanticHint)) {
			return UnexecutableCommand.INSTANCE;
		}
	}
	return super.getCreateCommand(request);
}
 

@Override
protected Command createChangeConstraintCommand(EditPart child,
		Object constraint) {
	if (constraint instanceof TreeLayoutConstraint) {
		if (((TreeLayoutConstraint) constraint).isRoot()) {
			return UnexecutableCommand.INSTANCE;
		} else {
			return new ICommandProxy(new UpdateAnnotationsOnMoveCommand(
					getHost().getEditingDomain(),
					(IGraphicalEditPart) child,
					(TreeLayoutConstraint) constraint));
		}

	}
	return super.createChangeConstraintCommand(child, constraint);
}
 

protected Command createMoveChildCommand( EditPart child, EditPart after )
{
	Object afterModel = null;
	if ( after != null )
	{
		afterModel = after.getModel( );
	}
	if(child.getParent( ).getModel( ) instanceof ReportItemHandle)
	{
		ReportItemHandle reportHandle = (ReportItemHandle)child.getParent( ).getModel( );
		if(reportHandle.getViews( ).contains( child.getModel( ) ))
		{
			return UnexecutableCommand.INSTANCE;
		}
	}
	FlowMoveChildCommand command = new FlowMoveChildCommand( child.getModel( ),
			afterModel,
			child.getParent( ).getModel( ) );
	return command;
}
 

@Override
protected Command getReparentCommand(ChangeBoundsRequest request) {
	if (!isValidSelection(request.getEditParts())) {
		return UnexecutableCommand.INSTANCE;
	}
	return super.getReparentCommand(request);
}
 

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;
		}
	};
}
 

protected Command createAddCommand( EditPart parent, EditPart child,
		EditPart after )
{
	Object parentObj = parent.getModel( );
	// Object source = child.getModel( );
	Object afterObj = after == null ? null : after.getModel( );
	Object childParent = getOperator( child ).getModel( );
	if ( parentObj instanceof VirtualCrosstabCellAdapter
			&& childParent instanceof CrosstabCellAdapter )
	{
		CrosstabCellAdapter childAdapter = (CrosstabCellAdapter) childParent;
		VirtualCrosstabCellAdapter parentAdapter = (VirtualCrosstabCellAdapter) parentObj;
		if ( parentAdapter.getType( ) == VirtualCrosstabCellAdapter.IMMACULATE_TYPE
				|| parentAdapter.getType( ) == VirtualCrosstabCellAdapter.MEASURE_TYPE )
		{
			return UnexecutableCommand.INSTANCE;
		}
		if ( ICrosstabCellAdapterFactory.CELL_FIRST_LEVEL_HANDLE.equals( childAdapter.getPositionType( ) ) )
		{
			if ( !( after instanceof FirstLevelHandleDataItemEditPart ) )
			{
				afterObj = null;
			}
			if ( parent.getParent( ) == getOperator( child ).getParent( ) )
			{
				ChangeAreaCommand command = new ChangeAreaCommand( parentAdapter.getDesignElementHandle( ),
						childAdapter.getDesignElementHandle( ),
						DNDUtil.unwrapToModel( afterObj ) );

				command.setType( parentAdapter.getType( ) );
				return command;
			}
			else
			{
				return UnexecutableCommand.INSTANCE;
			}
		}
	}
	return UnexecutableCommand.INSTANCE;
}
 

public Command getCommand( Request request )
{
	Command cmd;
	final ChangeBoundsRequest req = (ChangeBoundsRequest) request;
	if ( isDeleteRequest( req ) )
	{
		cmd = getGuideEditPart( ).getRulerProvider( )
				.getDeleteGuideCommand( getHost( ).getModel( ) );
	}
	else
	{
		int pDelta;
		if ( getGuideEditPart( ).isHorizontal( ) )
		{
			pDelta = req.getMoveDelta( ).y;
		}
		else
		{
			pDelta = req.getMoveDelta( ).x;
		}
		if ( isMoveValid( getGuideEditPart( ).getZoomedPosition( ) + pDelta ) )
		{
			ZoomManager zoomManager = getGuideEditPart( ).getZoomManager( );
			if ( zoomManager != null )
			{
				pDelta = (int) Math.round( pDelta / zoomManager.getZoom( ) );
			}
			cmd = getGuideEditPart( ).getRulerProvider( )
					.getMoveGuideCommand( getHost( ).getModel( ), pDelta );
		}
		else
		{
			cmd = UnexecutableCommand.INSTANCE;
		}
	}
	return cmd;
}
 

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;
		}
	};
}
 

/**
 * @param parent
 * @param child
 * @param insertionReference
 * @return command
 */
protected Command createAddCommand( EditPart parent, EditPart child,
		EditPart insertionReference )
{
	Object parentModel = null;
	if ( parent.getModel( ) instanceof ListBandProxy )
	{
		parentModel = ( (ListBandProxy) parent.getModel( ) ).getSlotHandle( );
	}
	else
	{
		parentModel = parent.getModel( );
	}
	if ( !( child.getModel( ) instanceof DesignElementHandle ) )
	{
		return UnexecutableCommand.INSTANCE;
	}
	if (insertionReference != null && !(insertionReference.getModel( ) instanceof DesignElementHandle))
	{
		return UnexecutableCommand.INSTANCE;
	}
	return new PasteCommand( (DesignElementHandle) child.getModel( ),
			parentModel,
			insertionReference == null ? null
					: (DesignElementHandle) insertionReference.getModel( ),
			false );
}
 

@Override
protected Command getMoveCommand(final ChangeBoundsRequest request) {
    if (moveNotAllowed(request)) {
        return UnexecutableCommand.INSTANCE;
    }
    return super.getMoveCommand(request);
}
 

@Override
protected Command getCreateCommand(CreateElementRequest req) {
	/*
	 * Allow to create only Pool and EventSubProcessPool on the "background"
	 * */
	IElementType elementType = req.getElementType();
	if (ProcessElementTypes.Pool_2007 == elementType) {
		return getGEFWrapper(new PoolCreateCommand(req));
	}

	return UnexecutableCommand.INSTANCE;
}
 

@Override
protected Command getDropCommand(final ChangeBoundsRequest request) {
    if(dropNotAllowed(request)){
        return UnexecutableCommand.INSTANCE;
    }
    return super.getDropCommand(request);
}
 

protected Command getCommand(Request request) {
	List operationSet = getInput();
	Iterator editParts = operationSet.iterator();
	CompoundCommand command = new CompoundCommand("Change Font");
	while (editParts.hasNext()) {
		EditPart editPart = (EditPart) editParts.next();
		Command curCommand = editPart.getCommand(request);
		if (curCommand != null) {
			command.add(curCommand);
		}
	}
	return command.isEmpty() || command.size() != operationSet.size() ? UnexecutableCommand.INSTANCE
			: (Command) command;
}
 

/**
* @generated
*/
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
	return UnexecutableCommand.INSTANCE;
}
 

/**
* @generated
*/
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
	return UnexecutableCommand.INSTANCE;
}
 

/**
* @generated
*/
protected Command getReorientReferenceRelationshipCommand(ReorientReferenceRelationshipRequest req) {
	return UnexecutableCommand.INSTANCE;
}
 

@Override
protected Command getReparentCommand(final ChangeBoundsRequest request) {
	final CompoundCommand cc = new CompoundCommand();
	if(getHost() instanceof ITextAwareEditPart){
		return UnexecutableCommand.INSTANCE;
	}
	if(request.getExtendedData().get("DELETE_FROM_LANE") != null){
		return super.getReparentCommand(request);
	}
	if(getHost() instanceof CustomPoolCompartmentEditPart
			&& request.getEditParts().get(0) != null
			&& ((EditPart) request.getEditParts().get(0)).getParent() instanceof CustomLaneCompartmentEditPart){
		return UnexecutableCommand.INSTANCE;
	}

	if(getHost() instanceof CustomSubprocessEventCompartmentEditPart
			&& request.getEditParts().get(0) != null){
		for(final Object child : request.getEditParts()){
			if(child instanceof IGraphicalEditPart){
				if(!((IGraphicalEditPart) child).getTargetConnections().isEmpty() ||
						!((IGraphicalEditPart) child).getSourceConnections().isEmpty()){
					return  UnexecutableCommand.INSTANCE;
				} else {
					if (child instanceof StartTimerEvent2EditPart
							&& !(((IGraphicalEditPart) child).getParent() instanceof CustomSubprocessEventCompartmentEditPart)
							&& !((IGraphicalEditPart)child).getParent().equals(getHost())){
						final Command editCommand = editTimerEventValue((IGraphicalEditPart)child);
						if (editCommand.canExecute()){
							cc.add(editCommand);
						}
					}
				}
			}
	}
	}
	if(getHost() instanceof CustomSubProcessEvent2EditPart){
		return  UnexecutableCommand.INSTANCE;
	}

	if(getHost() instanceof CustomLaneEditPart){
		if( request.getLocation() != null){
			return   UnexecutableCommand.INSTANCE;
		}

	}
	cc.add(super.getReparentCommand(request));
	return cc;
}
 

/**
* @generated
*/
protected Command getReorientRelationshipCommand(ReorientRelationshipRequest req) {
	return UnexecutableCommand.INSTANCE;
}