Bug 129886 Delect a column contain the marge row which contain some item, Error message pop up
Details: Delect a column contain the marge row which contain some item, Error message pop up Setp: 1.New a library and add a 3*3 grid 2.Insert a label in cell(1,1) 3.Marge the cell of (1,1) and (1,2) 4.Delete column 1. Actual result: An error message pop up
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editparts/TableEditPart.java
if ( rect.width > 0 )
		{
			retValue.width = rect.width;
		}
		if ( rect.height > 0 )
		{
			retValue.height = rect.height;
		}
		return retValue;
	}
	protected void notifyChildrenDirty( boolean bool )
	{
		super.notifyChildrenDirty( bool );
		if ( bool )
		{
			reLayout( );
			( (TableLayout) getContentPane( ).getLayoutManager( ) ).markDirty( );
		}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.ReportElementEditPart#markDirty(boolean)
	 */
	public void markDirty( boolean bool, boolean notifyParent )
	{
		super.markDirty( bool, notifyParent );
		if ( bool )
		{
			( (TableLayout) getContentPane( ).getLayoutManager( ) ).markDirty( );