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Command Core Expressions [message #253934]

Tue, 15 April 2008 09:59

Eclipse User

Originally posted by: anupgokhale.rediffmail.com

Hi all.

I have spent a frustrating day trying to grasp the concepts of the
command core expressions. A few things like using activeEdiorId etc seem
to work fine. But I am simply unable to set handler
enablement/activation using the "instance of" expression and "test"
expressions. Also the entire declarative approach to these expressions
appears to be highly confusing. Can anyone point me to a few
tutorials/articles on the same. I have already checked

http://wiki.eclipse.org/Command_Core_Expressions
http://wiki.eclipse.org/Platform_Command_Framework
http://wiki.eclipse.org/Menu_Contributions

Reading the above I have been able to get some hang about this, but am
still not in a position to fully comprehend and understand the core
expressions.

Can someone help?

Regards,
Anup

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Re: Command Core Expressions [message #253972 is a reply to message #253934]

Tue, 15 April 2008 18:04

Felix Dorner

Messages: 676
Registered: July 2009

Senior Member

Hey Anup,

I can only give an enablement example. The action is enabled when the
selected element in an the UML2 editor is a "org.eclipse.uml2.uml.Model".
I can understand your desperation, I was very happy when I got this to work.
Maybe the best way to check how things work is to just copy from example
or also bigger plugins.

Felix

<extension
point="org.eclipse.ui.editorActions">
<editorContribution
id="allure.umleditor"
targetID="org.eclipse.uml2.uml.editor.presentation.UMLEditorID ">
<menu
id="allure.umlmenu"
label="Allure"
path="org.eclipse.uml2.umlMenuID/additions-end">
<separator
name="additions">
</separator>
</menu>

<action
class="allure.actions.InsertBehaviorElementsAction"
id="allure.actions.insertBehaviorElements"
label="Insert Behavior Elements"
menubarPath="org.eclipse.uml2.umlMenuID/allure.umlmenu/additions "
style="push">
<enablement>
<objectClass
name="org.eclipse.uml2.uml.Model">
</objectClass>
</enablement>
</action>

</editorContribution>
</extension>

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