在非Editor中实现syntax coloring

在非Editor中实现syntax coloring

参考： http://dev.eclipse.org/newslists/news.eclipse.platform.rcp/msg01745.html
在非Editor中实现syntax coloring


Rainer wrote:

I hope this is the right place to ask this question:

It's fine; eclipse.platform would have been right as well.

I am working on a simple XML editing rich client. One of the main components is a JFace TextViewer, embedded in an Eclipse view (I can't use an Eclipse editor in my special case, unfortunately). I want to add syntax coloring, but can't seem to get the presentation reconciler to work.

Here's the sample code:

[...]

reconciler= new PresentationReconciler();
DefaultDamagerRepairer dr = new DefaultDamagerRepairer(new CodeRuleScanner());
dr.setDocument(viewer.getDocument());
reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
reconciler.install(viewer);

[..]

The CodeRuleScanner (extends RuleBasedScanner) is configured with a set of rules and a default token. However, the PresentationReconciler seems to be totally inactive. Is there any further configuration necessary?

No. If you look at the implementation of PresentationReconciler.install, you will see that it waits until the viewer's document is set (via an ITextInputListener). So, in order for the above to work, you have to set the document *after* installing the reconciler.

You should also look at SourceViewer that adds more features and configures itself in the right order using a SourceViewerConfiguration.

HTH, tom

正确的做法：

   
   
   
   

    
    
    
    
    
    
    
    PresentationReconciler reconciler
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     PresentationReconciler();
         DefaultDamagerRepairer dr 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     DefaultDamagerRepairer(
    
    
    
    new
    
    
    
     PolicyCodeScanner(
    
    
    
    new
    
    
    
     ColorProvider()));
         
         reconciler.setDamager(dr, IDocument.DEFAULT_CONTENT_TYPE);
         reconciler.setRepairer(dr, IDocument.DEFAULT_CONTENT_TYPE);
         reconciler.install(sourceViewer);
    
    
    
    //
    
    
    
    PresentationReconciler.install必须在setDoucument之前，切记
         
         
    
    
    
    //
    
    
    
    设置字体
    
    
    
    
 
    
    
    
            sourceViewer.getTextWidget().setFont(
    
    
    
    new
    
    
    
     Font(sourceViewer.getControl().getDisplay(), 
                 
    
    
    
    new
    
    
    
     FontData(
    
    
    
    "
    
    
    
    Courier
    
    
    
    "
    
    
    
    , 
    
    
    
    10
    
    
    
    , SWT.NORMAL)));
         
    
    
    
    //
    
    
    
    设置当前编辑行的背景色
    
    
    
    
 
    
    
    
            CursorLinePainter painter
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     CursorLinePainter(sourceViewer);
         painter.setHighlightColor(yellow);
         sourceViewer.addPainter(painter);
         
         
    
    
    
    //
    
    
    
    设置文档帮助
    
    
    
    
 
    
    
    
            
    
    
    
    final
    
    
    
     ContentAssistant assistant 
    
    
    
    =
    
    
    
     
    
    
    
    new
    
    
    
     ContentAssistant();
         assistant.setContentAssistProcessor(
    
    
    
    new
    
    
    
     PolicyContentAssistProcessor(), IDocument.DEFAULT_CONTENT_TYPE);
         assistant.install(sourceViewer);
         
         
    
    
    
    //
    
    
    
    设置文本内容
    
    
    
    
 
    
    
    
            sourceViewer.setDocument(
    
    
    
    new
    
    
    
     Document(
    
    
    
    this
    
    
    
    .content));
         
         dr.setDocument(sourceViewer.getDocument());
         
   
   
   
   
 


  

另外：
注入config:

sourceViewer.configure(SourceViewerConfiguration configuration)