Class ActionMap

java.lang.Object
javax.swing.ActionMap
All Implemented Interfaces:
Serializable
Direct Known Subclasses:
ActionMapUIResource
public class ActionMap extends Object implements Serializable
ActionMap provides mappings from Objects (called keys or Action names) to Actions. An ActionMap is usually used with an InputMap to locate a particular action when a key is pressed. As with InputMap, an ActionMap can have a parent that is searched for keys not defined in the ActionMap.

As with InputMap if you create a cycle, eg: 

  ActionMap am = new ActionMap();
  ActionMap bm = new ActionMap():
  am.setParent(bm);
  bm.setParent(am);
some of the methods will cause a StackOverflowError to be thrown.
Since:
1.3
See Also:

  • Constructor Summary

    Constructors
    Constructor
    Description
    ActionMap()
    Creates an ActionMap with no parent and no mappings.

  • Method Summary

    Modifier and Type
    Method
    Description
    Object[]
    allKeys()
    Returns an array of the keys defined in this ActionMap and its parent.
    void
    clear()
    Removes all the mappings from this ActionMap.
    Action
    get(Object key)
    Returns the binding for key, messaging the parent ActionMap if the binding is not locally defined.
    ActionMap
    getParent()
    Returns this ActionMap's parent.
    Object[]
    keys()
    Returns the Action names that are bound in this ActionMap.
    void
    put(Object key, Action action)
    Adds a binding for key to action.
    void
    remove(Object key)
    Removes the binding for key from this ActionMap.
    void
    setParent(ActionMap map)
    Sets this ActionMap's parent.
    int
    size()
    Returns the number of bindings in this ActionMap.

    Methods declared in class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    Modifier and Type
    Method
    Description
    protected Object
    clone()
    Creates and returns a copy of this object.
    boolean
    equals(Object obj)
    Indicates whether some other object is "equal to" this one.
    protected void
    finalize()
    Deprecated, for removal: This API element is subject to removal in a future version.
    Finalization is deprecated and subject to removal in a future release.
    final Class<?>
    getClass()
    Returns the runtime class of this Object.
    int
    hashCode()
    Returns a hash code value for this object.
    final void
    notify()
    Wakes up a single thread that is waiting on this object's monitor.
    final void
    notifyAll()
    Wakes up all threads that are waiting on this object's monitor.
    String
    toString()
    Returns a string representation of the object.
    final void
    wait()
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
    final void
    wait(long timeoutMillis)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
    final void
    wait(long timeoutMillis, int nanos)
    Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

  • Constructor Details

    • ActionMap

      public ActionMap()
      Creates an ActionMap with no parent and no mappings.

  • Method Details

    • setParent

      public void setParent(ActionMap map)
      Sets this ActionMap's parent.
      Parameters:
      map - the ActionMap that is the parent of this one

    • getParent

      public ActionMap getParent()
      Returns this ActionMap's parent.
      Returns:
      the ActionMap that is the parent of this one, or null if this ActionMap has no parent

    • put

      public void put(Object key, Action action)
      Adds a binding for key to action. If action is null, this removes the current binding for key.

      In most instances, key will be action.getValue(NAME).

      Parameters:
      key - a key
      action - a binding for key

    • get

      public Action get(Object key)
      Returns the binding for key, messaging the parent ActionMap if the binding is not locally defined.
      Parameters:
      key - a key
      Returns:
      the binding for key

    • remove

      public void remove(Object key)
      Removes the binding for key from this ActionMap.
      Parameters:
      key - a key

    • clear

      public void clear()
      Removes all the mappings from this ActionMap.

    • keys

      public Object[] keys()
      Returns the Action names that are bound in this ActionMap.
      Returns:
      an array of the keys

    • size

      public int size()
      Returns the number of bindings in this ActionMap.
      Returns:
      the number of bindings in this ActionMap

    • allKeys

      public Object[] allKeys()
      Returns an array of the keys defined in this ActionMap and its parent. This method differs from keys() in that this method includes the keys defined in the parent.
      Returns:
      an array of the keys