Bug 188619 GUIException when change parameter from radio to text box[0705]
Description: GUIException when change parameter from radio to text box Build number:2.2.0.v20070523 Steps to reproduce: 1. New a report parameter, integer, radio button, add value 1 and set it as default value. 2. Save the report. 3. Edit the parameter, change display type from radio button to text box. 4. click OK. Expected result: No exception and change is accepted. Actual result: Widget is disposed Plug-in Provider:Eclipse.org Plug-in Name:BIRT Designer UI Plug-in ID:org.eclipse.birt.report.designer.ui Version:2.2.0.v20070523-0630 Error Code:Error.GUIException.invokedBySWTException Error Message:Widget is disposed
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
Composite sortDirectionArea = new Composite( sortGroup, SWT.NONE );
		sortDirectionArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		sortDirectionArea.setLayout( new GridLayout( 2, false ) );
		
		sortDirectionLabel = new Label( sortDirectionArea, SWT.NONE );
		sortDirectionLabel.setText( LABEL_SORT_KEY );
		sortDirectionChooser = new Combo( sortDirectionArea, SWT.BORDER );
		sortDirectionChooser.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		sortDirectionChooser.add( CHOICE_ASCENDING );
		sortDirectionChooser.add( CHOICE_DESCENDING );
		sortDirectionChooser.setText( CHOICE_ASCENDING );
		Composite distinctBtnArea = new Composite( sortGroup, SWT.NONE );
		distinctBtnArea.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		distinctBtnArea.setLayout( new GridLayout( ) );
		distinct = new Button( distinctBtnArea, SWT.CHECK );
		distinct.setText( CHECKBOX_DISTINCT );
		distinct.setSelection( true );
	}
	private void clearDefaultValueText( )
	{
		if ( defaultValueChooser == null || defaultValueChooser.isDisposed( ) )
			return;
		String textValue = defaultValueChooser.getText( );
		if ( textValue != null
				&& ( textValue.equals( CHOICE_NULL_VALUE ) || textValue.equals( CHOICE_BLANK_VALUE ) ) )
		{
			defaultValueChooser.setText( "" );
		}
	}
	private void clearDefaultValueChooserSelections( )