public class

InputMap

extends Object
implements Serializable
java.lang.Object
   ↳ javax.swing.InputMap
Known Direct Subclasses
Known Indirect Subclasses

Class Overview

InputMap provides a binding between an input event (currently only KeyStrokes are used) and an Object. InputMaps are usually used with an ActionMap, to determine an Action to perform when a key is pressed. An InputMap can have a parent that is searched for bindings not defined in the InputMap.

As with ActionMap if you create a cycle, eg:

   InputMap am = new InputMap();
   InputMap bm = new InputMap():
   am.setParent(bm);
   bm.setParent(am);
 
some of the methods will cause a StackOverflowError to be thrown.

Summary

Public Constructors
InputMap()
Creates an InputMap with no parent and no mappings.
Public Methods
KeyStroke[] allKeys()
Returns an array of the KeyStrokes defined in this InputMap and its parent.
void clear()
Removes all the mappings from this InputMap.
Object get(KeyStroke keyStroke)
Returns the binding for keyStroke, messaging the parent InputMap if the binding is not locally defined.
InputMap getParent()
Gets this InputMap's parent.
KeyStroke[] keys()
Returns the KeyStrokes that are bound in this InputMap.
void put(KeyStroke keyStroke, Object actionMapKey)
Adds a binding for keyStroke to actionMapKey.
void remove(KeyStroke key)
Removes the binding for key from this InputMap.
void setParent(InputMap map)
Sets this InputMap's parent.
int size()
Returns the number of KeyStroke bindings.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public InputMap ()

Creates an InputMap with no parent and no mappings.

Public Methods

public KeyStroke[] allKeys ()

Returns an array of the KeyStrokes defined in this InputMap and its parent. This differs from keys() in that this method includes the keys defined in the parent.

public void clear ()

Removes all the mappings from this InputMap.

public Object get (KeyStroke keyStroke)

Returns the binding for keyStroke, messaging the parent InputMap if the binding is not locally defined.

public InputMap getParent ()

Gets this InputMap's parent.

Returns
  • map the InputMap that is the parent of this one, or null if this InputMap has no parent

public KeyStroke[] keys ()

Returns the KeyStrokes that are bound in this InputMap.

public void put (KeyStroke keyStroke, Object actionMapKey)

Adds a binding for keyStroke to actionMapKey. If actionMapKey is null, this removes the current binding for keyStroke.

public void remove (KeyStroke key)

Removes the binding for key from this InputMap.

public void setParent (InputMap map)

Sets this InputMap's parent.

Parameters
map the InputMap that is the parent of this one

public int size ()

Returns the number of KeyStroke bindings.