Bug 200143 If do not allow user to modify the expression, the button fx should be disabled[0005]
Description: If do not allow user to modify the expression, the button fx should be disabled[0005] Build number: 2.2.1.v20070816-0630 Steps to reproduce: 1, New a table1 with one binding 2, New a table share table1's result set 3, Drag a data item into the table 4, after specify the column binding name try to modify the expression Expected result: The expression button should be disable. Actual result: The expression can be edit but can not save, so the button should be disable Error log:
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dialogs/BindingDialogHelper.java
gd.heightHint = 150;
		}
		composite.setLayoutData( gd );
		new Label( composite, SWT.NONE ).setText( NAME );
		if ( isRef )
		{
			cmbName = new Combo( composite, SWT.BORDER | SWT.READ_ONLY );
			cmbName.setLayoutData( new GridData( GridData.FILL_HORIZONTAL
					| GridData.GRAB_HORIZONTAL ) );
			cmbName.addSelectionListener( new SelectionAdapter( ) {
				public void widgetSelected( SelectionEvent e )
				{
					String bindingName = cmbName.getItem( cmbName.getSelectionIndex( ) );
					for ( Iterator iterator = getBindingHolder( ).getDataBindingReference( )
							.getColumnBindings( )
							.iterator( ); iterator.hasNext( ); )
					{
						ComputedColumnHandle computedColumn = (ComputedColumnHandle) iterator.next( );
						if ( computedColumn.getName( ).equals( bindingName ) )
						{
							setBinding( computedColumn );
							initDialog( );
							return;
						}
					}
				}
			} );
		}
		else
		{