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
this.messageLine.setImage( PlatformUI.getWorkbench( )
								.getSharedImages( )
								.getImage( ISharedImages.IMG_OBJS_ERROR_TSK ) );
						return;
					}
				}
			}
			if ( dialog.getOkButton( ) != null )
				dialog.getOkButton( ).setEnabled( true );
			this.messageLine.setText( "" ); 
			this.messageLine.setImage( null );
		}
	}
	protected void handleFunctionSelectEvent( )
	{
		Control[] children = argsComposite.getChildren( );
		for ( int i = 0; i < children.length; i++ )
		{
			children[i].dispose( );
		}
		String function = getFunctionByDisplayName( cmbFunction.getText( ) );
		if ( function != null )
		{
			argsMap.clear( );
			List args = getFunctionArgNames( function );
			if ( args.size( ) > 0 )
			{
				( (GridData) argsComposite.getLayoutData( ) ).exclude = false;
				( (GridData) argsComposite.getLayoutData( ) ).heightHint = SWT.DEFAULT;
				for ( Iterator iterator = args.iterator( ); iterator.hasNext( ); )