Package org.openjump.core.ui.enablecheck

Class BooleanPropertyEnableCheck

java.lang.Object

org.openjump.core.ui.enablecheck.BooleanPropertyEnableCheck

All Implemented Interfaces:

EnableCheck

public class BooleanPropertyEnableCheck
extends Object
implements EnableCheck

Constructor Summary

Constructors

Constructor	Description
BooleanPropertyEnableCheck(Object object, String checkMethodName)
BooleanPropertyEnableCheck(Object object, String checkMethodName, boolean expectedValue)
BooleanPropertyEnableCheck(Object object, String checkMethodName, boolean expectedValue, String disabledMessage)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

BooleanPropertyEnableCheck

public BooleanPropertyEnableCheck(Object object,
                                  String checkMethodName)

Parameters:

object - The object to invoke the method on.

checkMethodName - The name of the check method which returns a boolean value.

BooleanPropertyEnableCheck

public BooleanPropertyEnableCheck(Object object,
                                  String checkMethodName,
                                  boolean expectedValue)

Parameters:

object - The object to invoke the method on.

checkMethodName - The name of the check method which returns a boolean value.

expectedValue - The expected value to be returned for the check to be enabled.

BooleanPropertyEnableCheck

public BooleanPropertyEnableCheck(Object object,
                                  String checkMethodName,
                                  boolean expectedValue,
                                  String disabledMessage)

Parameters:

object - The object to invoke the method on.

checkMethodName - The name of the check method which returns a boolean value.

expectedValue - The expected value to be returned for the check to be enabled.

disabledMessage - error message if the condition is not fulfilled

Method Detail

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