PropertyTaskListenerSection.java

package org.activiti.designer.property;

import java.util.List;

import org.activiti.designer.property.ui.TaskListenerEditor;
import org.activiti.designer.util.property.ActivitiPropertySection;
import org.eclipse.bpmn2.ActivitiListener;
import org.eclipse.bpmn2.UserTask;
import org.eclipse.graphiti.mm.pictograms.PictogramElement;
import org.eclipse.graphiti.services.Graphiti;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.layout.FormAttachment;
import org.eclipse.swt.layout.FormData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.ui.views.properties.tabbed.ITabbedPropertyConstants;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetPage;
import org.eclipse.ui.views.properties.tabbed.TabbedPropertySheetWidgetFactory;

public class PropertyTaskListenerSection extends ActivitiPropertySection implements ITabbedPropertyConstants {

	private TaskListenerEditor listenerEditor;

	@Override
	public void createControls(Composite parent, TabbedPropertySheetPage tabbedPropertySheetPage) {
		super.createControls(parent, tabbedPropertySheetPage);

		TabbedPropertySheetWidgetFactory factory = getWidgetFactory();
		Composite composite = factory.createFlatFormComposite(parent);
		FormData data;
		
		Composite listenersComposite = factory.createComposite(composite, SWT.WRAP);
		data = new FormData();
		data.left = new FormAttachment(0, 120);
		data.right = new FormAttachment(100, 0);
		data.top = new FormAttachment(0, VSPACE);
		listenersComposite.setLayoutData(data);
		GridLayout layout = new GridLayout();
		layout.marginTop = 0;
		layout.numColumns = 1;
		listenersComposite.setLayout(layout);
		listenerEditor = new TaskListenerEditor("taskListenerEditor", listenersComposite);
		listenerEditor.getLabelControl(listenersComposite).setBackground(Display.getDefault().getSystemColor(SWT.COLOR_WHITE));
		
		CLabel listenersLabel = factory.createCLabel(composite, "Listeners:"); //$NON-NLS-1$
		data = new FormData();
		data.left = new FormAttachment(0, 0);
		data.right = new FormAttachment(listenersComposite, -HSPACE);
		data.top = new FormAttachment(listenersComposite, 0, SWT.TOP);
		listenersLabel.setLayoutData(data);

	}
	
	@Override
  public void refresh() {
    
    PictogramElement pe = getSelectedPictogramElement();
    if (pe != null) {
      Object bo = Graphiti.getLinkService().getBusinessObjectForLinkedPictogramElement(pe);
      if (bo == null && (bo instanceof UserTask == false))
        return;
      
      UserTask userTask = (UserTask) bo;
      List<ActivitiListener> taskListenerList = userTask.getActivitiListeners();
      
      listenerEditor.pictogramElement = pe;
      listenerEditor.diagramEditor = getDiagramEditor();
      listenerEditor.diagram = getDiagram();
      listenerEditor.initialize(taskListenerList);
   }
  }
}