/* * Copyright (c) 2002, 2008, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package javax.swing.plaf.basic;import java.lang.reflect.*;import javax.swing.*;import javax.swing.plaf.*;/** * An ActionMap that populates its contents as necessary. The * contents are populated by invoking the <code>loadActionMap</code> * method on the passed in Object. * * @author Scott Violet */class LazyActionMap extends ActionMapUIResource { /** * Object to invoke <code>loadActionMap</code> on. This may be * a Class object. */ private transient Object _loader; /** * Installs an ActionMap that will be populated by invoking the * <code>loadActionMap</code> method on the specified Class * when necessary. * <p> * This should be used if the ActionMap can be shared. * * @param c JComponent to install the ActionMap on. * @param loaderClass Class object that gets loadActionMap invoked * on. * @param defaultsKey Key to use to defaults table to check for * existing map and what resulting Map will be registered on. */ static void installLazyActionMap(JComponent c, Class loaderClass, String defaultsKey) { ActionMap map = (ActionMap)UIManager.get(defaultsKey); if (map == null) { map = new LazyActionMap(loaderClass); UIManager.getLookAndFeelDefaults().put(defaultsKey, map); } SwingUtilities.replaceUIActionMap(c, map); } /** * Returns an ActionMap that will be populated by invoking the * <code>loadActionMap</code> method on the specified Class * when necessary. * <p> * This should be used if the ActionMap can be shared. * * @param c JComponent to install the ActionMap on. * @param loaderClass Class object that gets loadActionMap invoked * on. * @param defaultsKey Key to use to defaults table to check for * existing map and what resulting Map will be registered on. */ static ActionMap getActionMap(Class loaderClass, String defaultsKey) { ActionMap map = (ActionMap)UIManager.get(defaultsKey); if (map == null) { map = new LazyActionMap(loaderClass); UIManager.getLookAndFeelDefaults().put(defaultsKey, map); } return map; } private LazyActionMap(Class loader) { _loader = loader; } public void put(Action action) { put(action.getValue(Action.NAME), action); } public void put(Object key, Action action) { loadIfNecessary(); super.put(key, action); } public Action get(Object key) { loadIfNecessary(); return super.get(key); } public void remove(Object key) { loadIfNecessary(); super.remove(key); } public void clear() { loadIfNecessary(); super.clear(); } public Object[] keys() { loadIfNecessary(); return super.keys(); } public int size() { loadIfNecessary(); return super.size(); } public Object[] allKeys() { loadIfNecessary(); return super.allKeys(); } public void setParent(ActionMap map) { loadIfNecessary(); super.setParent(map); } private void loadIfNecessary() { if (_loader != null) { Object loader = _loader; _loader = null; Class<?> klass = (Class<?>)loader; try { Method method = klass.getDeclaredMethod("loadActionMap", new Class[] { LazyActionMap.class }); method.invoke(klass, new Object[] { this }); } catch (NoSuchMethodException nsme) { assert false : "LazyActionMap unable to load actions " + klass; } catch (IllegalAccessException iae) { assert false : "LazyActionMap unable to load actions " + iae; } catch (InvocationTargetException ite) { assert false : "LazyActionMap unable to load actions " + ite; } catch (IllegalArgumentException iae) { assert false : "LazyActionMap unable to load actions " + iae; } } }}
/*
* Copyright (c) 2002, 2008, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package javax.swing.plaf.basic;
import java.lang.reflect.*;
import javax.swing.*;
import javax.swing.plaf.*;
/**
* An ActionMap that populates its contents as necessary. The
* contents are populated by invoking the <code>loadActionMap</code>
* method on the passed in Object.
*
* @author Scott Violet
*/
class LazyActionMap extends ActionMapUIResource {
/**
* Object to invoke <code>loadActionMap</code> on. This may be
* a Class object.
*/
private transient Object _loader;
/**
* Installs an ActionMap that will be populated by invoking the
* <code>loadActionMap</code> method on the specified Class
* when necessary.
* <p>
* This should be used if the ActionMap can be shared.
*
* @param c JComponent to install the ActionMap on.
* @param loaderClass Class object that gets loadActionMap invoked
* on.
* @param defaultsKey Key to use to defaults table to check for
* existing map and what resulting Map will be registered on.
*/
static void installLazyActionMap(JComponent c, Class loaderClass,
String defaultsKey) {
ActionMap map = (ActionMap)UIManager.get(defaultsKey);
if (map == null) {
map = new LazyActionMap(loaderClass);
UIManager.getLookAndFeelDefaults().put(defaultsKey, map);
}
SwingUtilities.replaceUIActionMap(c, map);
}
/**
* Returns an ActionMap that will be populated by invoking the
* <code>loadActionMap</code> method on the specified Class
* when necessary.
* <p>
* This should be used if the ActionMap can be shared.
*
* @param c JComponent to install the ActionMap on.
* @param loaderClass Class object that gets loadActionMap invoked
* on.
* @param defaultsKey Key to use to defaults table to check for
* existing map and what resulting Map will be registered on.
*/
static ActionMap getActionMap(Class loaderClass,
String defaultsKey) {
ActionMap map = (ActionMap)UIManager.get(defaultsKey);
if (map == null) {
map = new LazyActionMap(loaderClass);
UIManager.getLookAndFeelDefaults().put(defaultsKey, map);
}
return map;
}
private LazyActionMap(Class loader) {
_loader = loader;
}
public void put(Action action) {
put(action.getValue(Action.NAME), action);
}
public void put(Object key, Action action) {
loadIfNecessary();
super.put(key, action);
}
public Action get(Object key) {
loadIfNecessary();
return super.get(key);
}
public void remove(Object key) {
loadIfNecessary();
super.remove(key);
}
public void clear() {
loadIfNecessary();
super.clear();
}
public Object[] keys() {
loadIfNecessary();
return super.keys();
}
public int size() {
loadIfNecessary();
return super.size();
}
public Object[] allKeys() {
loadIfNecessary();
return super.allKeys();
}
public void setParent(ActionMap map) {
loadIfNecessary();
super.setParent(map);
}
private void loadIfNecessary() {
if (_loader != null) {
Object loader = _loader;
_loader = null;
Class<?> klass = (Class<?>)loader;
try {
Method method = klass.getDeclaredMethod("loadActionMap",
new Class[] { LazyActionMap.class });
method.invoke(klass, new Object[] { this });
} catch (NoSuchMethodException nsme) {
assert false : "LazyActionMap unable to load actions " +
klass;
} catch (IllegalAccessException iae) {
assert false : "LazyActionMap unable to load actions " +
iae;
} catch (InvocationTargetException ite) {
assert false : "LazyActionMap unable to load actions " +
ite;
} catch (IllegalArgumentException iae) {
assert false : "LazyActionMap unable to load actions " +
iae;
}
}
}
}