Java Code Examples for org.eclipse.gef.EditPart#getCommand()

/**
 * Calls the {@link DropObjectsRequest} on an EditPart. 
 * @param EP - The EditPart that is to be added to
 * @param diagramElements - The Elements that are to be added
 */
@SuppressWarnings("unchecked")
public static void addElementsToEditPart(EditPart EP, Collection<? extends Element> diagramElements) {
	List<Element> diagramElementsList;
	
	if(!(diagramElements instanceof List<?>)){
		diagramElementsList = (List<Element>) createList(diagramElements);
	}else{
		diagramElementsList = (List<Element>) diagramElements;
	}
	
	if(!diagramElementsList.isEmpty()){
		DropObjectsRequest dropObjectsRequest = new DropObjectsRequest();
		dropObjectsRequest.setObjects(diagramElementsList);
		dropObjectsRequest.setLocation(new Point(0,0));
		Command commandDrop = EP.getCommand(dropObjectsRequest);
		if (commandDrop != null){
			commandDrop.execute();
		}
	}
}
 

/**
* @generated
*/
private Collection<IAdaptable> createConnections(Collection<CrossflowLinkDescriptor> linkDescriptors,
		Domain2Notation domain2NotationMap) {
	LinkedList<IAdaptable> adapters = new LinkedList<IAdaptable>();
	for (CrossflowLinkDescriptor nextLinkDescriptor : linkDescriptors) {
		EditPart sourceEditPart = getSourceEditPart(nextLinkDescriptor, domain2NotationMap);
		EditPart targetEditPart = getTargetEditPart(nextLinkDescriptor, domain2NotationMap);
		if (sourceEditPart == null || targetEditPart == null) {
			continue;
		}
		CreateConnectionViewRequest.ConnectionViewDescriptor descriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor(
				nextLinkDescriptor.getSemanticAdapter(),
				CrossflowVisualIDRegistry.getType(nextLinkDescriptor.getVisualID()), ViewUtil.APPEND, false,
				((IGraphicalEditPart) getHost()).getDiagramPreferencesHint());
		CreateConnectionViewRequest ccr = new CreateConnectionViewRequest(descriptor);
		ccr.setType(RequestConstants.REQ_CONNECTION_START);
		ccr.setSourceEditPart(sourceEditPart);
		sourceEditPart.getCommand(ccr);
		ccr.setTargetEditPart(targetEditPart);
		ccr.setType(RequestConstants.REQ_CONNECTION_END);
		Command cmd = targetEditPart.getCommand(ccr);
		if (cmd != null && cmd.canExecute()) {
			executeCommand(cmd);
			IAdaptable viewAdapter = (IAdaptable) ccr.getNewObject();
			if (viewAdapter != null) {
				adapters.add(viewAdapter);
			}
		}
	}
	return adapters;
}
 

/**
 * Arranges the children of an EditPart with the GMF arranging algorithm 
 * @param parent - The children of this EditPart will be arranged
 */
protected void arrangeChildren(EditPart parent) {
	@SuppressWarnings("unchecked")
	List<EditPart> elements = parent.getChildren();

	if(!elements.isEmpty()){
		ArrangeRequest arrangeRequest = new ArrangeRequest(ActionIds.ACTION_ARRANGE_ALL);
		List<EditPart> l = new ArrayList<EditPart>();
		l.addAll(elements);
		arrangeRequest.setPartsToArrange(l);
		Command cmd = parent.getCommand(arrangeRequest);
		cmd.execute();
	}
}
 

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
*/
private Collection<IAdaptable> createConnections(Collection<ProcessLinkDescriptor> linkDescriptors,
		Domain2Notation domain2NotationMap) {
	LinkedList<IAdaptable> adapters = new LinkedList<IAdaptable>();
	for (ProcessLinkDescriptor nextLinkDescriptor : linkDescriptors) {
		EditPart sourceEditPart = getSourceEditPart(nextLinkDescriptor, domain2NotationMap);
		EditPart targetEditPart = getTargetEditPart(nextLinkDescriptor, domain2NotationMap);
		if (sourceEditPart == null || targetEditPart == null) {
			continue;
		}
		CreateConnectionViewRequest.ConnectionViewDescriptor descriptor = new CreateConnectionViewRequest.ConnectionViewDescriptor(
				nextLinkDescriptor.getSemanticAdapter(),
				ProcessVisualIDRegistry.getType(nextLinkDescriptor.getVisualID()), ViewUtil.APPEND, false,
				((IGraphicalEditPart) getHost()).getDiagramPreferencesHint());
		CreateConnectionViewRequest ccr = new CreateConnectionViewRequest(descriptor);
		ccr.setType(RequestConstants.REQ_CONNECTION_START);
		ccr.setSourceEditPart(sourceEditPart);
		sourceEditPart.getCommand(ccr);
		ccr.setTargetEditPart(targetEditPart);
		ccr.setType(RequestConstants.REQ_CONNECTION_END);
		Command cmd = targetEditPart.getCommand(ccr);
		if (cmd != null && cmd.canExecute()) {
			executeCommand(cmd);
			IAdaptable viewAdapter = (IAdaptable) ccr.getNewObject();
			if (viewAdapter != null) {
				adapters.add(viewAdapter);
			}
		}
	}
	return adapters;
}
 

public boolean performDrop( Object transfer, Object target, int operation,
		DNDLocation location )
{
	if ( target instanceof EditPart )// drop on layout
	{
		EditPart editPart = (EditPart) target;

		if ( editPart != null )
		{
			CreateRequest request = new CreateRequest( );
			if ( transfer instanceof Object[] )
			{
				Object[] newObjs = (Object[]) transfer;
				transfer = UIUtil.getInsertPamaterElements( newObjs );
			}
			try
			{
				if ( transfer instanceof ScalarParameterHandle )
				{
					transfer = InsertInLayoutUtil.performInsertParameter( (ScalarParameterHandle) transfer );
				}
				else if ( transfer instanceof Object[] )
				{
					Object[] objs = (Object[])transfer;
					Object[] copys = new Object[objs.length];
					for (int i=0; i<objs.length; i++)
					{
						if (objs[i] instanceof ScalarParameterHandle)
						{
							copys[i] = InsertInLayoutUtil.performInsertParameter( (ScalarParameterHandle) objs[i] );
						}
						else
						{
							// Return now , don't support the other type
							return false;
						}
						
					}
					
					transfer = copys;
				}

			}
			catch ( SemanticException e )
			{
				// do nothing
				return false;
			}
			request.getExtendedData( )
					.put( DesignerConstants.KEY_NEWOBJECT, transfer );
			request.setLocation( location.getPoint( ) );
			Command command = editPart.getCommand( request );
			if ( command != null && command.canExecute( ) )
			{
				CommandStack stack = SessionHandleAdapter.getInstance( )
						.getCommandStack( );
				stack.startTrans( Messages.getString( "LevelHandleDropAdapter.ActionText" ) ); //$NON-NLS-1$

				editPart.getViewer( )
						.getEditDomain( )
						.getCommandStack( )
						.execute( command );
				stack.commit( );
				return true;
			}
			else
				return false;
		}
	}
	return false;
}
 

public boolean performDrop( Object transfer, Object target, int operation,
		DNDLocation location )
{
	if (transfer instanceof IAdaptable)
	{
		if (((IAdaptable)transfer).getAdapter( StructureHandle.class ) instanceof LevelAttributeHandle)
		{
			transfer = ((IAdaptable)transfer).getAdapter( StructureHandle.class );
		}
	}
	if ( target instanceof EditPart )// drop on layout
	{
		EditPart editPart = (EditPart) target;

		if ( editPart != null )
		{
			CreateRequest request = new CreateRequest( );

			request.getExtendedData( )
					.put( DesignerConstants.KEY_NEWOBJECT, transfer );
			request.setLocation( location.getPoint( ) );
			Command command = editPart.getCommand( request );
			if ( command != null && command.canExecute( ) )
			{
				CommandStack stack = SessionHandleAdapter.getInstance( )
						.getCommandStack( );
				stack.startTrans( Messages.getString( "LevelHandleDropAdapter.ActionText" ) ); //$NON-NLS-1$

				editPart.getViewer( )
						.getEditDomain( )
						.getCommandStack( )
						.execute( command );
				CrosstabReportItemHandle crosstab = getCrosstab( editPart );
				if ( crosstab != null )
				{
					AggregationCellProviderWrapper providerWrapper = new AggregationCellProviderWrapper( crosstab );
					providerWrapper.updateAllAggregationCells( AggregationCellViewAdapter.SWITCH_VIEW_TYPE );
				}
				stack.commit( );
				return true;
			}
			else
				return false;
		}
	}
	return false;
}
 

public boolean performDrop( Object transfer, Object target, int operation,
		DNDLocation location )
{

	if ( target instanceof EditPart )//drop on layout
	{
		EditPart editPart = (EditPart) target;

		if ( editPart != null )
		{
			CreateRequest request = new CreateRequest( );

			request.getExtendedData( )
					.put( DesignerConstants.KEY_NEWOBJECT, transfer );
			request.setLocation( location.getPoint( ) );
			Command command = editPart.getCommand( request );
			if ( command != null && command.canExecute( ) )
			{
				CommandStack stack = SessionHandleAdapter.getInstance( )
				.getCommandStack( );
				stack.startTrans( Messages.getString( "LevelHandleDropAdapter.ActionText" ) ); //$NON-NLS-1$
		
				editPart.getViewer( )
						.getEditDomain( )
						.getCommandStack( )
						.execute( command );
				CrosstabReportItemHandle crosstab = getCrosstab( editPart );
				if ( crosstab != null )
				{
					AggregationCellProviderWrapper providerWrapper = new AggregationCellProviderWrapper( crosstab );
					providerWrapper.updateAllAggregationCells( AggregationCellViewAdapter.SWITCH_VIEW_TYPE );
				}
				stack.commit( );
				return true;
			}
			else
				return false;
		}
	}
	return false;
}
 

public boolean performDrop( Object transfer, Object target, int operation,
		DNDLocation location )
{
	// if ( transfer instanceof Object[] )
	// {
	// Object[] objects = (Object[]) transfer;
	// for ( int i = 0; i < objects.length; i++ )
	// {
	// if ( !performDrop( objects[i], target, operation, location ) )
	// return false;
	// }
	// return true;
	// }

	if ( target instanceof EditPart )
	{
		EditPart editPart = (EditPart) target;

		CreateRequest request = new CreateRequest( );

		request.getExtendedData( ).put( DesignerConstants.KEY_NEWOBJECT,
				transfer );
		request.setLocation( location.getPoint( ) );
		Command command = editPart.getCommand( request );
		if ( command != null && command.canExecute( ) )
		{
			CrosstabReportItemHandle crosstab = getCrosstab( editPart );
			if ( crosstab != null )
			{
				crosstab.getModuleHandle( ).getCommandStack( ).startTrans( Messages.getString("MeasureHandleDropAdapter_trans_name") ); //$NON-NLS-1$
			}

			// Carl: Add this part below to set the binding for the crosstab in case it is not already set
			// Carl: This binding property should be set before execute the drop command
			// Carl: This behavior is the same as taken from ExtendedDataColumnXtabDropAdapter

			CubeHandle measureCubeHandle = CrosstabAdaptUtil
					.getCubeHandle( (ReportElementHandle) transfer );

			if ( measureCubeHandle == null )
			{

				ReportElementHandle extendedData = adapter.getBoundExtendedData( (ReportItemHandle) crosstab.getModelHandle( ) );
				
				if(extendedData == null || !extendedData.equals( adapter.resolveExtendedData( (ReportElementHandle) transfer)))
				{
					if(! adapter.setExtendedData( (ReportItemHandle)crosstab.getModelHandle( ), 
							adapter.resolveExtendedData( (ReportElementHandle) transfer)))
					{
						crosstab.getModuleHandle( ).getCommandStack( ).rollback( );
						return false;
					}
				}

			}

			editPart.getViewer( )
					.getEditDomain( )
					.getCommandStack( )
					.execute( command );

			
			if ( crosstab != null )
			{
				AggregationCellProviderWrapper providerWrapper = new AggregationCellProviderWrapper( crosstab );
				providerWrapper.updateAllAggregationCells( AggregationCellViewAdapter.SWITCH_VIEW_TYPE );
				
				if (crosstab.getDimensionCount( ICrosstabConstants.COLUMN_AXIS_TYPE ) != 0)
				{
					DimensionViewHandle viewHnadle = crosstab.getDimension( ICrosstabConstants.COLUMN_AXIS_TYPE, 
							crosstab.getDimensionCount( ICrosstabConstants.COLUMN_AXIS_TYPE ) - 1 );
					CrosstabUtil.addLabelToHeader( viewHnadle.getLevel( viewHnadle.getLevelCount( ) - 1 ) );
				}
				
				crosstab.getModuleHandle( ).getCommandStack( ).commit( );
			}
			return true;
		}
		else
			return false;

	}
	return false;
}
 

public boolean performDrop( Object transfer, Object target, int operation,
		DNDLocation location )
{

	EditPart editPart = (EditPart) target;

	VariableElementHandle variable = (VariableElementHandle) transfer;

	DataItemHandle dataHandle = DesignElementFactory.getInstance( )
			.newDataItem( null );

	try
	{
		ComputedColumn bindingColumn = StructureFactory.newComputedColumn( dataHandle,
				variable.getName( ) );
		// FIXME currently variable does not support data type, so just set
		// string
		bindingColumn.setDataType( "string" );
		ExpressionUtility.setBindingColumnExpression( variable,
				bindingColumn,
				true );
		bindingColumn.setDisplayName( variable.getDisplayLabel( ) );
		dataHandle.addColumnBinding( bindingColumn, false );
		dataHandle.setResultSetColumn( bindingColumn.getName( ) );
	}
	catch ( Exception e )
	{
		ExceptionHandler.handle( e );
	}

	CreateRequest request = new CreateRequest( );
	request.getExtendedData( ).put( DesignerConstants.KEY_NEWOBJECT,
			dataHandle );
	request.setLocation( location.getPoint( ) );
	Command command = editPart.getCommand( request );
	if ( command != null && command.canExecute( ) )
	{
		CommandStack stack = SessionHandleAdapter.getInstance( )
				.getCommandStack( );
		stack.startTrans( TRANS_NAME ); //$NON-NLS-1$

		editPart.getViewer( )
				.getEditDomain( )
				.getCommandStack( )
				.execute( command );
		stack.commit( );
		return true;
	}
	else
		return false;
}
 

public static CommandProxy arrangeAll(final EditPart ep, final List<GraphicalEditPart> newList) {
	final ArrangeRequest request = new ArrangeRequest(RequestConstants.REQ_ARRANGE_DEFERRED);
	request.setPartsToArrange(newList);
	request.setViewAdaptersToArrange(newList);
	return new CommandProxy(ep.getCommand(request));
}