Examples of org.eclipse.jface.text.ITextViewerExtension2

org.eclipse.jface.text.ITextViewerExtension2
Extension interface for {@link org.eclipse.jface.text.ITextViewer}.
It provides
- text presentation invalidation enhancements
- text hover management enhancements
- a replacement for auto indent strategies
- support for custom painters
It extends the means for text presentation invalidation by allowing a specific region of the presentation to get invalidated. It replaces {@link org.eclipse.jface.text.ITextViewer#setTextHover(ITextHover,String)}with a new method that allows to specify state masks for a better control of the hover behavior.
An {@link org.eclipse.jface.text.IAutoEditStrategy} is a generalization ofthe original {@link org.eclipse.jface.text.IAutoIndentStrategy}. Auto edit strategies can be arranged in a list that is executed like a pipeline when the viewer content is changed.
A {@link org.eclipse.jface.text.IPainter}is creating and managing visual decorations on the viewer's text widget. Viewer's can have an open number of painters. Painters are informed about changes to the viewer content and state and can take the necessary action in responds to the notification. @since 2.1

    widget.setTabs(
        getPreferenceStore().getInt(
            AbstractDecoratedTextEditorPreferenceConstants.EDITOR_TAB_WIDTH));
    widget.addVerifyListener(new SoftTabVerifyListener());
    
    ITextViewerExtension2 extension= (ITextViewerExtension2) getSourceViewer();
    pairMatcher = new CSSCharacterPairMatcher();
    pairMatcher.setEnable(getPreferenceStore().getBoolean(HTMLPlugin.PREF_PAIR_CHAR));
    MatchingCharacterPainter painter = new MatchingCharacterPainter(getSourceViewer(), pairMatcher);
    painter.setColor(Display.getDefault().getSystemColor(SWT.COLOR_GRAY));
    extension.addPainter(painter);
  }

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            public void keyReleased(KeyEvent e) {
                firePropertyChange(PROP_DIRTY);
            }
        });*/
    
    ITextViewerExtension2 extension= (ITextViewerExtension2) getSourceViewer();
    pairMatcher = new JavaScriptCharacterPairMatcher();
    pairMatcher.setEnable(getPreferenceStore().getBoolean(HTMLPlugin.PREF_PAIR_CHAR));
    MatchingCharacterPainter painter = new MatchingCharacterPainter(getSourceViewer(), pairMatcher);
    painter.setColor(Display.getDefault().getSystemColor(SWT.COLOR_GRAY));
    extension.addPainter(painter);
    
    update();
  }

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   */
  private void registerAutoEditVetoer(ITextViewer viewer) {
    try {
      String[] contentTypes= getContentTypes(viewer.getDocument());
      if (viewer instanceof ITextViewerExtension2) {
        ITextViewerExtension2 vExtension= ((ITextViewerExtension2) viewer);
        for (int i= 0; i < contentTypes.length; i++) {
          vExtension.prependAutoEditStrategy(fAutoEditVetoer, contentTypes[i]);
        }
      } else {
        Assert.isTrue(false);
      }

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  private void unregisterAutoEditVetoer(ITextViewer viewer) {
    try {
      String[] contentTypes= getContentTypes(viewer.getDocument());
      if (viewer instanceof ITextViewerExtension2) {
        ITextViewerExtension2 vExtension= ((ITextViewerExtension2) viewer);
        for (int i= 0; i < contentTypes.length; i++) {
          vExtension.removeAutoEditStrategy(fAutoEditVetoer, contentTypes[i]);
        }
      } else {
        Assert.isTrue(false);
      }
    } catch (BadPartitioningException e) {

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          //IPreferenceStore store = Activator.getDefault().getPreferenceStore();
          //colorMatchingChar = new Color(display, PreferenceConverter.getColor(
          //    store, JJPreferences.P_MATCHING_CHAR));
          colorMatchingChar = new Color(display,new RGB(128,128,128));
          fMatchingCharacterPainter.setColor(colorMatchingChar);
          ITextViewerExtension2 extension = (ITextViewerExtension2) getSourceViewer();
          extension.addPainter(fMatchingCharacterPainter);
        }
      }
    }

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    widget.setTabs(
        getPreferenceStore().getInt(
            AbstractDecoratedTextEditorPreferenceConstants.EDITOR_TAB_WIDTH));
    widget.addVerifyListener(softTabListener);
    
    ITextViewerExtension2 extension= (ITextViewerExtension2) getSourceViewer();
    pairMatcher = new JavaScriptCharacterPairMatcher();
    pairMatcher.setEnable(getPreferenceStore().getBoolean(HTMLPlugin.PREF_PAIR_CHAR));
    MatchingCharacterPainter painter = new MatchingCharacterPainter(getSourceViewer(), pairMatcher);
    painter.setColor(Display.getDefault().getSystemColor(SWT.COLOR_GRAY));
    extension.addPainter(painter);
    
    hyperlinkDetector = new JavaScriptHyperlinkDetector();
    viewer.setHyperlinkDetectors(new IHyperlinkDetector[]{hyperlinkDetector}, SWT.CTRL);
    
    update();

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    //    projectionViewer.setHyperlinkDetectors(new IHyperlinkDetector[]{
    //        new URLHyperlinkDetector(projectionViewer),
    //        createHyperlinkSupport()
    //    }, SWT.CTRL);


    ITextViewerExtension2 extension = (ITextViewerExtension2) getSourceViewer();
    _pairMatcher = new HTMLCharacterPairMatcher();
    _pairMatcher.setEnable(getPreferenceStore().getBoolean(HTMLPlugin.PREF_PAIR_CHAR));
    MatchingCharacterPainter painter = new MatchingCharacterPainter(getSourceViewer(), _pairMatcher);
    painter.setColor(Display.getDefault().getSystemColor(SWT.COLOR_GRAY));
    extension.addPainter(painter);


    getSourceViewer().getTextWidget().getParent().setBackground(parent.getBackground());


    update();
  }

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    StyledText widget = viewer.getTextWidget();
    widget.setTabs(getPreferenceStore().getInt(AbstractDecoratedTextEditorPreferenceConstants.EDITOR_TAB_WIDTH));
    widget.addVerifyListener(new SoftTabVerifyListener());


    ITextViewerExtension2 extension = (ITextViewerExtension2) getSourceViewer();
    pairMatcher = new CSSCharacterPairMatcher();
    pairMatcher.setEnable(getPreferenceStore().getBoolean(HTMLPlugin.PREF_PAIR_CHAR));
    MatchingCharacterPainter painter = new MatchingCharacterPainter(getSourceViewer(), pairMatcher);
    painter.setColor(Display.getDefault().getSystemColor(SWT.COLOR_GRAY));
    extension.addPainter(painter);
  }

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      if (fSourceViewer instanceof ITextViewerExtension2) {
        fMatchingCharacterPainter= new MatchingCharacterPainter(fSourceViewer, fCharacterPairMatcher);
        fMatchingCharacterPainter.setColor(getColor(fMatchingCharacterPainterColorKey));
        fMatchingCharacterPainter.setHighlightCharacterAtCaretLocation(isCharacterAtCaretLocationShown());
        fMatchingCharacterPainter.setHighlightEnclosingPeerCharacters(areEnclosingPeerCharactersShown());
        ITextViewerExtension2 extension= (ITextViewerExtension2) fSourceViewer;
        extension.addPainter(fMatchingCharacterPainter);
      }
    }
  }

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   * Disables showing of matching characters.
   */
  private void hideMatchingCharacters() {
    if (fMatchingCharacterPainter != null) {
      if (fSourceViewer instanceof ITextViewerExtension2) {
        ITextViewerExtension2 extension= (ITextViewerExtension2) fSourceViewer;
        extension.removePainter(fMatchingCharacterPainter);
        fMatchingCharacterPainter.deactivate(true);
        fMatchingCharacterPainter.dispose();
        fMatchingCharacterPainter= null;
      }
    }

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