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Java™ Platform Standard Ed. 6 |
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java.lang.Objectjavax.swing.ActionMap
public class ActionMap
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.
InputMap| Constructor Summary | |
|---|---|
ActionMap()
Creates an ActionMap with no parent and no mappings. |
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| Method Summary | |
|---|---|
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 KeyStroke bindings. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
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public ActionMap()
ActionMap with no parent and no mappings.
| Method Detail |
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public void setParent(ActionMap map)
ActionMap's parent.
map - the ActionMap that is the parent of this onepublic ActionMap getParent()
ActionMap's parent.
ActionMap that is the parent of this one,
or null if this ActionMap has no parent
public void put(Object key,
Action action)
key to action.
If action is null, this removes the current binding
for key.
In most instances, key will be
action.getValue(NAME).
public Action get(Object key)
key, messaging the
parent ActionMap if the binding is not locally defined.
public void remove(Object key)
key from this ActionMap.
public void clear()
ActionMap.
public Object[] keys()
Action names that are bound in this ActionMap.
public int size()
KeyStroke bindings.
public Object[] allKeys()
ActionMap and
its parent. This method differs from keys() in that
this method includes the keys defined in the parent.
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Java™ Platform Standard Ed. 6 |
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