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Using the reconciler programmatically [message #723681]

Fri, 09 September 2011 02:59

Eclipse User

Hello,

what is the best way to use the reconciler of the xtext edior programmatically?

I have an action which should just switch background color of particular text areas in the xtext editor. What I tried to do is to use a boolean value in the semantic highlighting configuration class for switching betweeen options and the reconciler's refresh method to initiate an update in the editor, but i get a NullPointerException at

org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler.refresh(HighlightingReconciler.java:243)

the code in the Action:

public class SetColorForBackgroundAction implements IWorkbenchWindowPulldownDelegate {
  @Inject
  private HighlightingReconciler reconciler;

  @Inject
  private SemanticHighlightingConfiguration conf;
  
  public void run(IAction action) {
    conf.setColorForBackground(true);
    reconciler.refresh();
  }
}

What is the best way to implement such functionality?

thanks in advance

Re: Using the reconciler programmatically [message #723713 is a reply to message #723681]

Fri, 09 September 2011 04:21

Eclipse User

AFAIK, there's an individual reconciler for each editor, so this won't
work. I haven't verified this, but I'd try to

- get the editor (store the page in the init() method of your IWWPD, and
go to the active page,...)
- access its source viewer
- invalidateTextPresentation()

Am 09.09.11 08:59, schrieb as:
> Hello,
>
> what is the best way to use the reconciler of the xtext edior
> programmatically?
>
> I have an action which should just switch background color of particular
> text areas in the xtext editor. What I tried to do is to use a boolean
> value in the semantic highlighting configuration class for switching
> betweeen options and the reconciler's refresh method to initiate an
> update in the editor, but i get a NullPointerException at
> org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler.refresh(HighlightingReconciler.java:243)
>
>
> the code in the Action:
>
> public class SetColorForBackgroundAction implements
> IWorkbenchWindowPulldownDelegate {
> @Inject
> private HighlightingReconciler reconciler;
>
> @Inject
> private SemanticHighlightingConfiguration conf;
>
> public void run(IAction action) {
> conf.setColorForBackground(true);
> reconciler.refresh();
> }
> }
>
>
> What is the best way to implement such functionality?
>
> thanks in advance
>
>
>

--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

Re: Using the reconciler programmatically [message #723763 is a reply to message #723681]

Fri, 09 September 2011 07:39

Eclipse User

Hi,

I would simply change the preference for the color in the
IPreferenceStore and rely on the framework to refresh the visual
presentation accordingly.

Regards,
Sebastian
--
Need professional support for Eclipse Modeling?
Go visit: http://xtext.itemis.com

On 09.09.11 08:59, as wrote:
> Hello,
>
> what is the best way to use the reconciler of the xtext edior
> programmatically?
>
> I have an action which should just switch background color of particular
> text areas in the xtext editor. What I tried to do is to use a boolean
> value in the semantic highlighting configuration class for switching
> betweeen options and the reconciler's refresh method to initiate an
> update in the editor, but i get a NullPointerException at
> org.eclipse.xtext.ui.editor.syntaxcoloring.HighlightingReconciler.refresh(HighlightingReconciler.java:243)
>
>
> the code in the Action:
>
> public class SetColorForBackgroundAction implements
> IWorkbenchWindowPulldownDelegate {
> @Inject
> private HighlightingReconciler reconciler;
>
> @Inject
> private SemanticHighlightingConfiguration conf;
>
> public void run(IAction action) {
> conf.setColorForBackground(true);
> reconciler.refresh();
> }
> }
>
>
> What is the best way to implement such functionality?
>
> thanks in advance
>
>
>

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