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PropertyTesters Tiutorial please [message #641831]

Sun, 28 November 2010 15:43

ash

Messages: 142
Registered: July 2010

Senior Member

HI,
Can any provide nice tutorial for to implement "org.eclipse.core.expressions.propertyTesters"
and when to use property testers and when to use
"org.eclipse.core.expressions.definitions"

Thank
ashok

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Re: PropertyTesters Tiutorial please [message #643924 is a reply to message #641831]

Wed, 08 December 2010 17:29

eshvar60

Messages: 51
Registered: March 2010

Member

org.eclipse.core.expressions.definition is for creating expressions using Command Core Expressions.

org.eclipse.core.expressions.propertyTesters is for creating a java class that can be referenced from a visibleWhen/enabledWhen block.

1. To define a propertyTester extend the PropertyTester class with your own and implement the test method.
2. In the plugin.xml extend the propertyTesters point and add a propertyTester with your new class defined in there.
3. In the enabledWhen/visibleWhen part of the handler/menu definition do a "with" -> "test" where the with defines the element that you want to test on (activeEditor, activeMenu, selection and etc...) and the test specifies the propertyTest you defined in step 2.

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Re: PropertyTesters Tiutorial please [message #644248 is a reply to message #641831]

Fri, 10 December 2010 08:55

Alexandra Niculai

Messages: 84
Registered: July 2009

Member

Hi

I hope this will help:
http://wiki.eclipse.org/Command_Core_Expressions#Property_Testers
http://blog.richclientgui.com/?p=50

Greetings
Alexandra.

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Re: PropertyTesters Tiutorial please [message #644368 is a reply to message #641831]

Fri, 10 December 2010 17:27

ash

Messages: 142
Registered: July 2010

Senior Member

Check out The code and test the example

Observer the delete button in toolbar ... button is enabled only when any row in table is checked if == 0 then disabled.

https://jobsleaf.googlecode.com/svn/trunk/com.jobsleaf.comma nd.propertytester

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