Package com.vaadin.event

Interface Action.Handler

  • All Superinterfaces:
    java.io.Serializable
    All Known Implementing Classes:
    ActionManager, ConnectorActionManager
    Enclosing class:
    Action
    public static interface Action.Handler
extends java.io.Serializable
    Interface implemented by classes who wish to handle actions.
    Since:
    3.0
    Author:
    Vaadin Ltd.

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      Action[] getActions​(java.lang.Object target, java.lang.Object sender)
      Gets the list of actions applicable to this handler.
      void handleAction​(Action action, java.lang.Object sender, java.lang.Object target)
      Handles an action for the given target.

    • Method Detail

      • getActions

        Action[] getActions​(java.lang.Object target,
                    java.lang.Object sender)
        Gets the list of actions applicable to this handler.
        Parameters:
        target - the target handler to list actions for. For item containers this is the item id.
        sender - the party that would be sending the actions. Most of this is the action container.
        Returns:
        the list of Action

      • handleAction

        void handleAction​(Action action,
                  java.lang.Object sender,
                  java.lang.Object target)
        Handles an action for the given target. The handler method may just discard the action if it's not suitable.
        Parameters:
        action - the action to be handled.
        sender - the sender of the action. This is most often the action container.
        target - the target of the action. For item containers this is the item id.