Examples of org.eclipse.jface.text.source.SourceViewerConfiguration

org.eclipse.jface.text.source.SourceViewerConfiguration
This class bundles the configuration space of a source viewer. Instances of this class are passed to the configure method of ISourceViewer.
Each method in this class get as argument the source viewer for which it should provide a particular configuration setting such as a presentation reconciler. Based on its specific knowledge about the returned object, the configuration might share such objects or compute them according to some rules.

Clients should subclass and override just those methods which must be specific to their needs.
@see org.eclipse.jface.text.source.ISourceViewer

    }


    protected void configureDetailsViewer() {
        LazyModelPresentation mp = (LazyModelPresentation) fModelPresentation
                .getPresentation(getDebugModel());
        SourceViewerConfiguration svc = null;
        if (mp != null) {
            try {
                svc = mp.newDetailsViewerConfiguration();
            } catch (CoreException e) {
                DebugUIPlugin.errorDialog(getSite().getShell(),
                    "Drools Debug View Error", "Unable to configure drools debug view", e);
            }
        }
        if (svc == null) {
            svc = new SourceViewerConfiguration();
            getDetailViewer().setEditable(false);
        }
        getDetailViewer().configure(svc);
        updateAction("ContentAssist");
        setDetailViewerConfiguration(svc);

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   * @param parent the parent control
   * @return a configured source viewer
   */
  protected SourceViewer createViewer(Composite parent) {
    SourceViewer viewer= new SourceViewer(parent, null, null, false, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
    SourceViewerConfiguration configuration= new SourceViewerConfiguration();
    viewer.configure(configuration);
    IDocument document= new Document();
    viewer.setDocument(document);
    return viewer;
  }

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     * @param parent the parent composite of the viewer
     * @return a configured <code>SourceViewer</code>
     */
    protected SourceViewer createViewer(Composite parent) {
      SourceViewer viewer= new SourceViewer(parent, null, null, false, SWT.BORDER | SWT.V_SCROLL | SWT.H_SCROLL);
      SourceViewerConfiguration configuration= new SourceViewerConfiguration() {
        public IContentAssistant getContentAssistant(ISourceViewer sourceViewer) {


          ContentAssistant assistant= new ContentAssistant();
          assistant.enableAutoActivation(true);
          assistant.enableAutoInsert(true);

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    int styles= SWT.V_SCROLL | SWT.H_SCROLL | SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION;
    fSourceViewer= createSourceViewer(parent, fVerticalRuler, styles);


    if (fConfiguration == null)
      fConfiguration= new SourceViewerConfiguration();
    fSourceViewer.configure(fConfiguration);


    if (fRangeIndicator != null)
      fSourceViewer.setRangeIndicator(fRangeIndicator);

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   * <p>Subclasses may extend or override this method.</p>
   * 
   * @since 3.3
   */
  protected void installTabsToSpacesConverter() {
    SourceViewerConfiguration config= getSourceViewerConfiguration();
    if (config != null && fSourceViewer instanceof ITextViewerExtension7) {
      int tabWidth= config.getTabWidth(fSourceViewer);
      TabsToSpacesConverter tabToSpacesConverter= new TabsToSpacesConverter();
      tabToSpacesConverter.setLineTracker(new DefaultLineTracker());
      tabToSpacesConverter.setNumberOfSpacesPerTab(tabWidth);
      ((ITextViewerExtension7)fSourceViewer).setTabsToSpacesConverter(tabToSpacesConverter);
      updateIndentPrefixes();

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   * the values provided by the source viewer configuration.
   * 
   * @since 3.3
   */
  protected final void updateIndentPrefixes() {
    SourceViewerConfiguration configuration= getSourceViewerConfiguration();
    String[] types= configuration.getConfiguredContentTypes(fSourceViewer);
    for (int i= 0; i < types.length; i++) {
      String[] prefixes= configuration.getIndentPrefixes(fSourceViewer, types[i]);
      if (prefixes != null && prefixes.length > 0)
        fSourceViewer.setIndentPrefixes(prefixes, types[i]);
    }
  }

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  private void configureToggleCommentAction() {
    IAction action = getAction("ToggleComment"); //$NON-NLS-1$
    if (action instanceof ToggleCommentAction) {
      ISourceViewer sourceViewer = getSourceViewer();
      SourceViewerConfiguration configuration = getSourceViewerConfiguration();
      ((ToggleCommentAction) action).configure(sourceViewer, configuration);
    }
  }

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    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PROPOSALS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setProposalSelectorForeground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_BACKGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupBackground(color);
            assistant.setContextSelectorBackground(color);
          }
        }
      }
    }


    // update content assist preferences
    else if (EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND.equals(property)) {
      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer != null) {
        SourceViewerConfiguration configuration = getSourceViewerConfiguration();
        if (configuration != null) {
          IContentAssistant contentAssistant = configuration.getContentAssistant(sourceViewer);
          if (contentAssistant instanceof ContentAssistant) {
            ContentAssistant assistant = (ContentAssistant) contentAssistant;
            RGB rgb = PreferenceConverter.getColor(getPreferenceStore(), EditorPreferenceNames.CODEASSIST_PARAMETERS_FOREGROUND);
            Color color = EditorUtility.getColor(rgb);
            assistant.setContextInformationPopupForeground(color);

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   * Sets the editor's source viewer configuration which it uses to
   * configure it's internal source viewer. This method was overwritten so
   * that viewer configuration could be set after editor part was created.
   */
  protected void setSourceViewerConfiguration(SourceViewerConfiguration config) {
    SourceViewerConfiguration oldSourceViewerConfiguration = getSourceViewerConfiguration();
    super.setSourceViewerConfiguration(config);
    StructuredTextViewer stv = getTextViewer();
    if (stv != null) {
      /*
       * There should be no need to unconfigure before configure because

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  /*
   * Update the hovering behavior depending on the preferences.
   */
  private void updateHoverBehavior() {
    SourceViewerConfiguration configuration = getSourceViewerConfiguration();
    String[] types = configuration.getConfiguredContentTypes(getSourceViewer());


    for (int i = 0; i < types.length; i++) {


      String t = types[i];


      ISourceViewer sourceViewer = getSourceViewer();
      if (sourceViewer instanceof ITextViewerExtension2) {
        // Remove existing hovers
        ((ITextViewerExtension2) sourceViewer).removeTextHovers(t);


        int[] stateMasks = configuration.getConfiguredTextHoverStateMasks(getSourceViewer(), t);


        if (stateMasks != null) {
          for (int j = 0; j < stateMasks.length; j++) {
            int stateMask = stateMasks[j];
            ITextHover textHover = configuration.getTextHover(sourceViewer, t, stateMask);
            ((ITextViewerExtension2) sourceViewer).setTextHover(textHover, t, stateMask);
          }
        }
        else {
          ITextHover textHover = configuration.getTextHover(sourceViewer, t);
          ((ITextViewerExtension2) sourceViewer).setTextHover(textHover, t, ITextViewerExtension2.DEFAULT_HOVER_STATE_MASK);
        }
      }
      else
        sourceViewer.setTextHover(configuration.getTextHover(sourceViewer, t), t);
    }
  }

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