Examples of org.eclipse.jface.text.IDocumentListener

org.eclipse.jface.text.IDocumentListener
Interface for objects which are interested in getting informed about document changes. A listener is informed about document changes before they are applied and after they have been applied. It is ensured that the document event passed into the listener is the same for the two notifications, i.e. the two document events can be checked using object identity.
Clients may implement this interface.
@see org.eclipse.jface.text.IDocument

   *
   * @since 3.2
   */
  private void ensureDocumentListenerInstalled() {
    if (fDocumentListener == null) {
      fDocumentListener=  new IDocumentListener()  {
        public void documentAboutToBeChanged(DocumentEvent event) {
          if (!fInserting)
            fDocumentEvents.add(event);
        }

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    IAction enableAction = edit.getAction("live-py.enable.action");
      setVisibility(
          enableAction != null 
          ? enableAction.isChecked()
          : isVisible);
    document.addDocumentListener(new IDocumentListener() {


      /**
       * Analyse the document and display the results whenever the
       * document changes.
       */

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     }
   }
   
   private IDocumentListener getDocumentListener() {
     if (fDocumentListener == null) {
       fDocumentListener= new IDocumentListener() {
         @Override
         public void documentAboutToBeChanged(DocumentEvent event) {
         }
         
         @Override

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    if(!sourcePage.isEditable())
      return false;


    IDocument document = editor.getDocument();
    final boolean[] documentChanged = new boolean[1];
    IDocumentListener listener = new IDocumentListener() {
      public void documentAboutToBeChanged(DocumentEvent event) {
      }


      public void documentChanged(DocumentEvent event) {
        documentChanged[0] = true;

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  public PropertyContentOutlinePage(PropertiesFileEditor editor) {
    final IEditorInput input = editor.getEditorInput();
    final IDocumentProvider provider = editor.getDocumentProvider();
    this.editor = editor;
    document = provider.getDocument(input);
    document.addDocumentListener(new IDocumentListener() {


      public void documentChanged(DocumentEvent event) {
        try {
          setProperties(getPairs(event.fDocument));
        } catch (UnsupportedEncodingException e) {

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   *
   * @since 3.2
   */
  private void ensureDocumentListenerInstalled() {
    if (documentListener == null) {
      documentListener=  new IDocumentListener()  {
        public void documentAboutToBeChanged(DocumentEvent event) {
          if (!inserting)
            documentEvents.add(event);
        }

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