How to use

queuePostSelectionChanged

method

in

org.eclipse.jface.text.TextViewer

/**
 * Sends out a text selection changed event to all registered listeners and
 * registers the selection changed event to be sent out to all post selection
 * listeners.
 *
 * @param offset the offset of the newly selected range in the visible document
 * @param length the length of the newly selected range in the visible document
 */
protected void selectionChanged(int offset, int length) {
  queuePostSelectionChanged(true);
  fireSelectionChanged(offset, length);
}

/**
 * Sends out a text selection changed event to all registered listeners and
 * registers the selection changed event to be sent out to all post selection
 * listeners.
 *
 * @param offset the offset of the newly selected range in the visible document
 * @param length the length of the newly selected range in the visible document
 */
protected void selectionChanged(int offset, int length) {
  queuePostSelectionChanged(true);
  fireSelectionChanged(offset, length);
}