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[zest] View fails to update graph after subsequent calls to setInput [closed] [message #539985]

Mon, 14 June 2010 10:08

Eclipse User

Dear,

I'm using the Zest GraphViewer as a component in an eclipse View. I want to dynamically change the ContentProvider (IGraphEntityContentProvider) and content of the GraphViewer, by calling:

viewer.setContentProvider(provider);
viewer.setInput(providerDefinition.read(file));

The first time this code is called, all works well. However, subsequent calls leave me with an empty view, although a manual call to 'getElements' of the provider is not empty. I tried different redraw/refresh/update strategies, but nothing seems to work.

The bottom line is, how do I force the viewer to update the UI as to show the new graph?

Thanks.

[Updated on: Tue, 15 June 2010 07:52] by Moderator

Re: [zest] View fails to update graph after subsequent calls to setInput [message #540210 is a reply to message #539985]

Tue, 15 June 2010 07:51

Eclipse User

Problem is solved and had an application-specific and obscure cause. Eventually it came down to not setting the font of a Draw2D label, leading to an undetected null-pointer-exception in the Draw2D code.

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