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/ParameterDialog.java
}
	}
	private void createDefaultEditor( )
	{
		createLabel( valueArea, LABEL_DEFAULT_VALUE );
		defaultValueChooser = new Combo( valueArea, SWT.BORDER );
		defaultValueChooser.setLayoutData( new GridData( GridData.FILL_HORIZONTAL ) );
		if ( getSelectedDataType( ).equals( DesignChoiceConstants.PARAM_TYPE_STRING )
				&& !isRequired.getSelection( ) )
		{
			defaultValueChooser.add( CHOICE_NULL_VALUE );
			defaultValueChooser.add( CHOICE_BLANK_VALUE );
		}
		defaultValueChooser.addSelectionListener( new SelectionAdapter( ) {
			public void widgetSelected( SelectionEvent e )
			{
				switch ( defaultValueChooser.getSelectionIndex( ) )
				{
					case 0 :
						changeDefaultValue( null );
						break;
					case 1 :
						changeDefaultValue( "" );
						break;
				}
				if ( isStatic( ) )
				{
					refreshValueTable( );
				}
			}