119 lines
4.2 KiB
Java
119 lines
4.2 KiB
Java
/*
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* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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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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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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