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