@Override
  public void edgeLabelLeft(final EdgeLabel label) {
    for (final IZyGraphListener<NodeType, EdgeType> listener : m_graphListeners) {
      try {
        listener.edgeLabelExited(label);
      } catch (final Exception exception) {
        exception.printStackTrace();
      }
    }
  }
Listens on the edit mode and passes click events forward to the attached listeners.
java/zylib/src/main/java/com/google/security/zynamics/zylib/yfileswrap/gui/zygraph/InternalEditModeListener.java