public static String getClientEventHandler()

in trinidad-impl/src/main/java/org/apache/myfaces/trinidadinternal/renderkit/core/xhtml/XhtmlUtils.java [659:728]
62 lines of code
23 McCabe index (conditional complexity)

  public static String getClientEventHandler(
    FacesContext facesContext,
    UIComponent  component,
    String       eventName,
    String       secondaryEventName,
    String       userHandlerScript,
    String       eventHandlerScript
    )
  {
    BehaviorsData data = null;
    if (component instanceof ClientBehaviorHolder)
    {
      data = new BehaviorsData();
      _getBehaviorScripts(facesContext, component, eventName, data);

      if (secondaryEventName != null)
      {
        _getBehaviorScripts(facesContext, component, secondaryEventName, data);
      }
    }

    boolean hasHandler = eventHandlerScript != null && eventHandlerScript.length() > 0;
    boolean hasUserHandler = userHandlerScript != null && userHandlerScript.length() > 0;
    String script = null;
    boolean hasBehaviors = data != null && data.behaviorScripts != null &&
      !data.behaviorScripts.isEmpty();

    if (hasHandler && !hasBehaviors && !hasUserHandler)
    {
      script = eventHandlerScript;
    }
    else if (hasUserHandler && !hasBehaviors && !hasHandler)
    {
      script = userHandlerScript;
    }
    else if (!hasUserHandler && !hasHandler && hasBehaviors && data.behaviorScripts.size() == 1)
    {
      script = data.behaviorScripts.get(0);
    }
    else
    {
      // There are multiple scripts, we will need to chain the methods.
      int numBehaviorScripts = hasBehaviors ? data.behaviorScripts.size() : 0;
      int length = numBehaviorScripts;
      if (hasHandler) { ++length; }
      if (hasUserHandler) { ++length; }
      String[] scripts = new String[length];
      int index = 0;
      if (hasUserHandler)
      {
        scripts[0] = userHandlerScript;
        index = 1;
      }

      if (hasBehaviors)
      {
        System.arraycopy(data.behaviorScripts.toArray(), 0, scripts, index, numBehaviorScripts);
        index += numBehaviorScripts;
      }

      if (hasHandler)
      {
        scripts[index] = eventHandlerScript;
      }

      script = getChainedJS(true, scripts);
    }

    return script;
  }