How to use

doOperation

method

in

org.eclipse.jface.text.TextViewer

  /**
   * Selects all in the viewer.
   */
  public void run() {
    fTextViewer.doOperation(ITextOperationTarget.SELECT_ALL);
  }
}

  /**
   * Selects all in the viewer.
   */
  @Override
  public void run() {
    fTextViewer.doOperation(ITextOperationTarget.SELECT_ALL);
  }
}

  /**
   * Selects all in the viewer.
   */
  @Override
  public void run() {
    fTextViewer.doOperation(ITextOperationTarget.SELECT_ALL);
  }
}

private static boolean doGlobalAction(String actionId, TextViewer textViewer) {
  if (actionId.equals(ActionFactory.CUT.getId())) {
    textViewer.doOperation(ITextOperationTarget.CUT);
    return true;
  } else if (actionId.equals(ActionFactory.COPY.getId())) {
    textViewer.doOperation(ITextOperationTarget.COPY);
    return true;
  } else if (actionId.equals(ActionFactory.PASTE.getId())) {
    textViewer.doOperation(ITextOperationTarget.PASTE);
    return true;
  } else if (actionId.equals(ActionFactory.DELETE.getId())) {
    textViewer.doOperation(ITextOperationTarget.DELETE);
    return true;
  } else if (actionId.equals(ActionFactory.UNDO.getId())) {
    textViewer.doOperation(ITextOperationTarget.UNDO);
    return true;
  } else if (actionId.equals(ActionFactory.REDO.getId())) {
    textViewer.doOperation(ITextOperationTarget.REDO);
    return true;
  } else if (actionId.equals(ActionFactory.SELECT_ALL.getId())) {
    textViewer.doOperation(ITextOperationTarget.SELECT_ALL);
    return true;
  }
  return false;
}

public void format(TextViewer viewer, Node node) {
  if (node == null) {
    return;
  }
  Node tmp;
  int start, offset;
  if (node.getPreviousSibling() != null) {
    tmp = node.getPreviousSibling();
    start = ((IndexedRegion) tmp).getEndOffset();
  } else {
    tmp = node;
    start = ((IndexedRegion) tmp).getStartOffset();
  }
  if (node.getNextSibling() != null) {
    tmp = node.getNextSibling();
    offset = ((IndexedRegion) tmp).getStartOffset() - start;
  } else {
    tmp = node;
    offset = ((IndexedRegion) tmp).getEndOffset() - start;
  }
  viewer.setSelectedRange(start, offset);
  viewer.doOperation(ISourceViewer.FORMAT);
}

super.doOperation(operation);

super.doOperation(operation);