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Question regarding ESelectionService [message #735427] Tue, 11 October 2011 14:50 Go to next message
Thomas Blattner is currently offline Thomas Blattner
Messages: 5
Registered: July 2010
Junior Member
Hello,

I have a e4 part displaying data in a table. If I click on an element, I would like to open another e4 part depending on the concrete model implementation behind the selection etc.

Therefore I have created a controller class in my app (it get's created and can be injected through an Addon etc.). I inject the ESelectionService there and now I tried several ways to get notified about selection. First through the standard @Inject...ACTIVE_SELECTION, which did not work. The method was called only once the controller was created.

At second I tried to register an SelectionListener on the ESelectionService . I figured out that the concrete implementation is of type ApplicationSelectionServiceImpl in my case and attaching a listener there throws an UnsupportedOperationException.

My main question now is, what is the best way in E4 to do, what I would like to do. For sure there would be solutions like attach a selection listener to the viewer and handle selections directly there etc. But is this still best practice?

Thanks for any hints.

Best regards
Thomas

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Re: Question regarding ESelectionService [message #736188 is a reply to message #735427] Thu, 13 October 2011 14:54 Go to previous messageGo to next message
Thomas Blattner is currently offline Thomas Blattner
Messages: 5
Registered: July 2010
Junior Member
In the meantime I had a look on the e4.simpleide example. There is implemented what I have been looking for. It is done using an OpenListener and a manual command handler execution.

This is fine for me.

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Re: Question regarding ESelectionService [message #739480 is a reply to message #736188] Mon, 17 October 2011 10:18 Go to previous messageGo to next message
Christian Hanster is currently offline Christian Hanster
Messages: 22
Registered: March 2011
Junior Member
In my Application I have also a table with data and a part which should be updated when the selected data changed. I do it with the E4 selectionService (@Inject public void setPerson(@Optional @Named(IServiceConstants.ACTIVE_SELECTION)) and it works fine. Perhaps you have a look in the tutorial of Tom Schindl (http://tomsondev.bestsolution.at/2010/07/28/eclipse-4-0-and-tutorial-on-writing-e4-rcp-application-released/) on page 25 and page 26 or in the tutorial of Lars Vogel (http://www.vogella.de/articles/EclipseE4/article.html)

Christian

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Re: Question regarding ESelectionService [message #740604 is a reply to message #735427] Tue, 18 October 2011 13:51 Go to previous message
Thomas Blattner is currently offline Thomas Blattner
Messages: 5
Registered: July 2010
Junior Member
Thanks.

But in my case I need to dynamically decide which Part to be opened depending on the concrete instance of the selected element in the viewer.

But it's already sorted out. See my previous post.

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