jmeaction.java

java 3d game jme 工程开发源代码

/*
 * Copyright (c) 2003-2009 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jmex.awt.swingui;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeListener;

import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.event.SwingPropertyChangeSupport;

import com.jme.input.InputHandler;
import com.jme.input.action.InputAction;
import com.jme.input.util.SyntheticButton;

/**
 * This class is used to execute an action in jMEs update thread instead of the Swing thread.
 * @see #performAction(com.jme.input.action.InputActionEvent)
 */
public abstract class JMEAction extends InputAction implements Action, ActionListener {
    public JMEAction( String name, InputHandler inputHandler ) {
        button = new SyntheticButton( name );
        inputHandler.addAction( this, button.getDeviceName(), button.getIndex(), InputHandler.AXIS_NONE, false );
        delegate = new AbstractAction( name ) {
            private static final long serialVersionUID = 1L;

            public synchronized void addPropertyChangeListener( PropertyChangeListener listener ) {
                if (changeSupport == null) {
                    changeSupport = new SwingPropertyChangeSupport( JMEAction.this );
                }
                super.addPropertyChangeListener( listener );
            }

            public void actionPerformed( ActionEvent e ) {
            }
        };
    }

    private final SyntheticButton button;

    public SyntheticButton getButton() {
        return button;
    }

    private final Action delegate;

    public final void actionPerformed( ActionEvent e ) {
        button.trigger( 0, '\0', 0, true, e );
    }

    public final void addPropertyChangeListener( PropertyChangeListener listener ) {
        delegate.addPropertyChangeListener( listener );
    }

    public final Object getValue( String key ) {
        return delegate.getValue( key );
    }

    public boolean isEnabled() {
        return delegate.isEnabled();
    }

    public final void putValue( String key, Object value ) {
        delegate.putValue( key, value );
    }

    public final void removePropertyChangeListener( PropertyChangeListener listener ) {
        delegate.removePropertyChangeListener( listener );
    }

    public void setEnabled( boolean b ) {
        delegate.setEnabled( b );
    }
}