/*
* Copyright (c) 1999, 2011, Oracle and/or its affiliates. All rights reserved.
* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
*
*
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*/
package javax.swing;
/**
* A <code>ComponentInputMap</code> is an <code>InputMap</code>
* associated with a particular <code>JComponent</code>.
* The component is automatically notified whenever
* the <code>ComponentInputMap</code> changes.
* <code>ComponentInputMap</code>s are used for
* <code>WHEN_IN_FOCUSED_WINDOW</code> bindings.
*
* @author Scott Violet
* @since 1.3
*/
@
SuppressWarnings("serial")
public class
ComponentInputMap extends
InputMap {
/** Component binding is created for. */
private
JComponent component;
/**
* Creates a <code>ComponentInputMap</code> associated with the
* specified component.
*
* @param component a non-null <code>JComponent</code>
* @throws IllegalArgumentException if <code>component</code> is null
*/
public
ComponentInputMap(
JComponent component) {
this.
component =
component;
if (
component == null) {
throw new
IllegalArgumentException("ComponentInputMaps must be associated with a non-null JComponent");
}
}
/**
* Sets the parent, which must be a <code>ComponentInputMap</code>
* associated with the same component as this
* <code>ComponentInputMap</code>.
*
* @param map a <code>ComponentInputMap</code>
*
* @throws IllegalArgumentException if <code>map</code>
* is not a <code>ComponentInputMap</code>
* or is not associated with the same component
*/
public void
setParent(
InputMap map) {
if (
getParent() ==
map) {
return;
}
if (
map != null && (!(
map instanceof
ComponentInputMap) ||
((
ComponentInputMap)
map).
getComponent() !=
getComponent())) {
throw new
IllegalArgumentException("ComponentInputMaps must have a parent ComponentInputMap associated with the same component");
}
super.setParent(
map);
getComponent().
componentInputMapChanged(this);
}
/**
* Returns the component the <code>InputMap</code> was created for.
*/
public
JComponent getComponent() {
return
component;
}
/**
* Adds a binding for <code>keyStroke</code> to <code>actionMapKey</code>.
* If <code>actionMapKey</code> is null, this removes the current binding
* for <code>keyStroke</code>.
*/
public void
put(
KeyStroke keyStroke,
Object actionMapKey) {
super.put(
keyStroke,
actionMapKey);
if (
getComponent() != null) {
getComponent().
componentInputMapChanged(this);
}
}
/**
* Removes the binding for <code>key</code> from this object.
*/
public void
remove(
KeyStroke key) {
super.remove(
key);
if (
getComponent() != null) {
getComponent().
componentInputMapChanged(this);
}
}
/**
* Removes all the mappings from this object.
*/
public void
clear() {
int
oldSize =
size();
super.clear();
if (
oldSize > 0 &&
getComponent() != null) {
getComponent().
componentInputMapChanged(this);
}
}
}