扩展GEF的SelectAllAction功能

    目前GEF的SelectAllAction在执行的时候忽略了了Connection Model，有时候需要Select All的时候将连线也选中，通过简单的修改即可实现这个效果

/**
 * @author zhazha
 */
public class CaseSelectAllAction extends SelectAllAction {
	private IWorkbenchPart part;

	public CaseSelectAllAction(IWorkbenchPart part) {
		super(part);
		this.part = part;
	}

	@Override
	public void run() {
		GraphicalViewer viewer = (GraphicalViewer) part.getAdapter(GraphicalViewer.class);
		if (viewer != null) {
			Set<GraphicalEditPart> items = new HashSet<GraphicalEditPart>();
			for (Object object : viewer.getContents().getChildren()) {
				if (object instanceof GraphicalEditPart) {
					GraphicalEditPart editPart = (GraphicalEditPart) object;
					items.add(editPart);
					//添加Connection的editpart
					items.addAll(editPart.getSourceConnections());
					items.addAll(editPart.getTargetConnections());
				}
			}
			viewer.setSelection(new StructuredSelection(new ArrayList<GraphicalEditPart>(items)));
		}
	}
}