Bug 180645 Support set format for Date/Time type parameter.[0705]
Description: Support set format for Date/Time type parameter. Build number:2.2.0.v200704031345 Steps to reproduce: 1. New a Date report parameter. 2. Click Change... button to set format for it. Expected result: Can set format for Date/Time parameter. Actual result: Change... button is disabled. Error log:N/A
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ParameterDialog.java
}
	private boolean canBeNull( )
	{
		boolean canBeNull = false;
		if ( dirtyProperties.containsKey( CHECKBOX_ISREQUIRED ) )
		{
			canBeNull = !( ( (Boolean) dirtyProperties.get( CHECKBOX_ISREQUIRED ) ).booleanValue( ) );
		}
		else
		{
			canBeNull = !( inputParameter.isRequired( ) );
		}
		return canBeNull;
	}
	private boolean isDefaultChoice( SelectionChoice choice )
	{
		String choiceValue = choice.getValue( );
		String defaultValue = convertToStandardFormat( this.defaultValue );
		if ( canBeNull( ) && choiceValue == null && defaultValue == null )
		{
			return true;
		}
		return choiceValue != null && isEqual( choiceValue, defaultValue );
	}
	private boolean isStatic( )
	{
		return staticRadio.getSelection( );
	}
	private String convertToStandardFormat( String string )
	{