| Highlighting related terms in a text editor [message #326143] |
Sat, 08 March 2008 11:01  |
Eclipse User |
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Originally posted by: mthibberd.gmail.com
I am looking to implement a feature in a text editor that highlights (with
a background colour) related terms in a text editor. Something very
similar to the way the JavaEditor highlights all variable occurrences in
Grey when the cursor is at the declaration.
Does anyone know where the code to do this is in JDT, or have any idea
where to start?
For background, the text editor I am working with extends:
org.eclipse.ui.editors.text.TextEditor and has a SourceViewerConfiguration
that does some syntax highlighting for the language.
I have been looking at setHighlightRange(), but I:
a) can't get it to work yet
b) not sure if it is even the right functionality for what I am trying to
do
Any pointers would be appreciated.
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| Re: Highlighting related terms in a text editor [message #326165 is a reply to message #326143] |
Mon, 10 March 2008 08:43  |
| Eclipse User |
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Originally posted by: valere.fedronic.ext.streamezzo.com
Hi,
You must create your own annotation type
(org.eclipse.ui.editors.annotationTypes), and define the presentation
(org.eclipse.ui.editors.markerAnnotationSpecification).
E.g. 'org.eclipse.jdt.ui.occurrences' in the plugin.xml of the jdt.ui
plugin.
And then every time you find an occurrence of the text you try to match,
you just have to add an annotation :
IAnnotationModel#addAnnotation(new Annotation("custom.occurrences",
false, message), new Position(offset,length));
(Of course, it's a little harder than that, you will have to
update/remove these annotation when needed)
The java occurence finder code is located in the JavaEditor.class
(#updateOccurrenceAnnotations(),#installOccurrencesFinder
JavaEditor$OccurrencesFinderJob) etc...
Valère.
PS:
The setHighlightRange method is used to shade part of the vertical ruler
corresponding to the current text selection.
Mark Hibberd a écrit :
> I am looking to implement a feature in a text editor that highlights
> (with a background colour) related terms in a text editor. Something
> very similar to the way the JavaEditor highlights all variable
> occurrences in Grey when the cursor is at the declaration.
>
> Does anyone know where the code to do this is in JDT, or have any idea
> where to start?
>
> For background, the text editor I am working with extends:
> org.eclipse.ui.editors.text.TextEditor and has a
> SourceViewerConfiguration that does some syntax highlighting for the
> language.
> I have been looking at setHighlightRange(), but I:
> a) can't get it to work yet
> b) not sure if it is even the right functionality for what I am trying
> to do
>
> Any pointers would be appreciated.
>
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