Bug 182664 Cross Tab: resize column doesn't behave correctly
When user drag to resize a column, it supposes to effect on the left column only. Currently when user drag to resize column, many other columns are resized too, unexpectedly.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableEditPart.java
* 
	 * @see org.eclipse.gef.editparts.AbstractEditPart#createEditPolicies()
	 */
	protected void createEditPolicies( )
	{		
		installEditPolicy( EditPolicy.COMPONENT_ROLE,
				new ReportComponentEditPolicy( ) {
					public boolean understandsRequest( Request request )
					{
						if ( RequestConstants.REQ_DIRECT_EDIT.equals( request.getType( ) )
								|| RequestConstants.REQ_OPEN.equals( request.getType( ) ) 
								|| ReportRequest.CREATE_ELEMENT.equals(request.getType()))
							return true;
						return super.understandsRequest( request );
					}
				} );
		installEditPolicy( EditPolicy.CONTAINER_ROLE,
				new ReportContainerEditPolicy( ) );
		
		
		
		installEditPolicy( EditPolicy.LAYOUT_ROLE,
				new TableXYLayoutEditPolicy( (XYLayout) getContentPane( ).getLayoutManager( ) ) );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editparts.AbstractEditPart#getModelChildren()
	 */
	protected List getModelChildren( )