Bug 177439 Need an easy way to determine default value for a dynamic parameter
Currently, I have to bring up the data set editor, preview the results in the data set and make a mental note of the value to use for a report parameter that depends on a data set. It would be nice to have a drop down on the default value field, such as <Select value> which when selected queries the data set and presents me with a list to select from.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/CascadingParametersDialog.java
oldValue = listLimit.getText( );
					}
				}
				catch ( NumberFormatException e1 )
				{
					ExceptionHandler.openErrorMessageBox( ERROR_TITLE_INVALID_LIST_LIMIT,
							MessageFormat.format( ERROR_MSG_INVALID_LIST_LIMIT,
									new Object[]{
										Integer.toString( Integer.MAX_VALUE )
									} ) );
					listLimit.setText( oldValue );
				}
			}
		} );
		new Label( limitArea, SWT.NONE ).setText( LABEL_VALUES );
		isRequired = new Button( composite, SWT.CHECK );
		isRequired.setText( BUTTON_IS_REQUIRED );
		isRequired.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		isRequired.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				isRequiredChange( isRequired.getSelection( ) );
				if ( selectedParameter != null
						&& selectedParameter != newParameter )
				{
					try
					{
						selectedParameter.setIsRequired( isRequired.getSelection( ) );
					}
					catch ( SemanticException e1 )