Class CurrentLayerIsRasterImageLayerCheck

java.lang.Object

org.openjump.core.rasterimage.CurrentLayerIsRasterImageLayerCheck

All Implemented Interfaces:

EnableCheck

public class CurrentLayerIsRasterImageLayerCheck
extends Object
implements EnableCheck

Enable check (to controll menu items) that checks, if the selected layer is a RasterImage Layer

Version:

$Rev: 2434 $

Author:

Ole Rahn

FH Osnabrück - University of Applied Sciences Osnabrück,
Project: PIROL (2005),
Subproject: Daten- und Wissensmanagement

Field Summary

Fields

Modifier and Type	Field	Description
protected EnableCheck	checker
protected PlugInContext	context

Constructor Summary

Constructors

Constructor	Description
CurrentLayerIsRasterImageLayerCheck(PlugInContext context)

Method Summary

Modifier and Type	Method	Description
String	check(JComponent component)	Returns a non-null value if the check failed.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

context

protected PlugInContext context

checker

protected EnableCheck checker

Constructor Details

CurrentLayerIsRasterImageLayerCheck

public CurrentLayerIsRasterImageLayerCheck(PlugInContext context)

Method Details

check

public String check(JComponent component)

Description copied from interface: EnableCheck

Returns a non-null value if the check failed. Sometimes the return value is used (for example, it is displayed as a tooltip for menu-items); sometimes it is not (for example, toolbar buttons don't do anything with the return value). An advanced use of an EnableCheck is simply to change some property of a menu item (such as the text), as it is called when menu items are displayed.

Specified by:

check in interface EnableCheck

Returns:

an error message if the check failed, or null if the check passed