How to use

updateTextListeners

method

in

org.eclipse.jface.text.TextViewer

/**
 * Informs all text listeners about the change of the viewer's redraw state.
 * @since 2.0
 */
private void fireRedrawChanged() {
  fWidgetCommand.start= 0;
  fWidgetCommand.length= 0;
  fWidgetCommand.text= null;
  fWidgetCommand.event= null;
  updateTextListeners(fWidgetCommand);
}

/**
 * Informs all text listeners about the change of the viewer's redraw state.
 * @since 2.0
 */
private void fireRedrawChanged() {
  fWidgetCommand.start= 0;
  fWidgetCommand.length= 0;
  fWidgetCommand.text= null;
  fWidgetCommand.event= null;
  updateTextListeners(fWidgetCommand);
}

  @Override
  public void documentChanged(DocumentEvent e) {
    if (fWidgetCommand.event == e)
      updateTextListeners(fWidgetCommand);
    fLastSentSelectionChange= null;
    handleVisibleDocumentChanged(e);
  }
}

  @Override
  public void documentChanged(DocumentEvent e) {
    if (fWidgetCommand.event == e)
      updateTextListeners(fWidgetCommand);
    fLastSentSelectionChange= null;
    handleVisibleDocumentChanged(e);
  }
}

@Override
public final void invalidateTextPresentation() {
  if (fVisibleDocument != null) {
    fWidgetCommand.event= null;
    fWidgetCommand.start= 0;
    fWidgetCommand.length= fVisibleDocument.getLength();
    fWidgetCommand.text= fVisibleDocument.get();
    updateTextListeners(fWidgetCommand);
  }
}

@Override
public final void invalidateTextPresentation() {
  if (fVisibleDocument != null) {
    fWidgetCommand.event= null;
    fWidgetCommand.start= 0;
    fWidgetCommand.length= fVisibleDocument.getLength();
    fWidgetCommand.text= fVisibleDocument.get();
    updateTextListeners(fWidgetCommand);
  }
}

/**
 * Invalidates the given range of the text presentation.
 *
 * @param offset the offset of the range to be invalidated
 * @param length the length of the range to be invalidated
 * @since 2.1
 */
@Override
public final void invalidateTextPresentation(int offset, int length) {
  if (fVisibleDocument != null) {
    IRegion widgetRange= modelRange2WidgetRange(new Region(offset, length));
    if (widgetRange != null) {
      fWidgetCommand.event= null;
      fWidgetCommand.start= widgetRange.getOffset();
      fWidgetCommand.length= widgetRange.getLength();
      try {
        fWidgetCommand.text= fVisibleDocument.get(widgetRange.getOffset(), widgetRange.getLength());
        updateTextListeners(fWidgetCommand);
      } catch (BadLocationException x) {
        // can not happen because of previous checking
      }
    }
  }
}

/**
 * Invalidates the given range of the text presentation.
 *
 * @param offset the offset of the range to be invalidated
 * @param length the length of the range to be invalidated
 * @since 2.1
 */
@Override
public final void invalidateTextPresentation(int offset, int length) {
  if (fVisibleDocument != null) {
    IRegion widgetRange= modelRange2WidgetRange(new Region(offset, length));
    if (widgetRange != null) {
      fWidgetCommand.event= null;
      fWidgetCommand.start= widgetRange.getOffset();
      fWidgetCommand.length= widgetRange.getLength();
      try {
        fWidgetCommand.text= fVisibleDocument.get(widgetRange.getOffset(), widgetRange.getLength());
        updateTextListeners(fWidgetCommand);
      } catch (BadLocationException x) {
        // can not happen because of previous checking
      }
    }
  }
}