animatingcontrolssurface.java

这是ACCP的JAVA ppt课件

/*
 * Copyright (c) 2003 Sun Microsystems, Inc. All  Rights Reserved.
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 * Neither the name of Sun Microsystems, Inc. or the names of contributors
 * may be used to endorse or promote products derived from this software
 * without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
 * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
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/*
 * @(#)AnimatingControlsSurface.java	1.6 03/01/23
 */

package java2d;

import java.awt.Component;


/**
 * Demos that animate and have custom controls extend this class.
 */
public abstract class AnimatingControlsSurface extends AnimatingSurface implements CustomControlsContext {


    public void setControls(Component[] controls) {
        this.controls = controls;
    }
  
    public void setConstraints(String[] constraints) {
        this.constraints = constraints;
    }
    
    public String[] getConstraints() {
        return constraints;
    }

    public Component[] getControls() { 
        return controls;
    }

    public void handleThread(int state) {
        for (int i = 0; i < controls.length; i++) {
            if (state == CustomControlsContext.START) {
                if (controls[i] instanceof CustomControls) {
                    ((CustomControls) controls[i]).start();
                }
            } else if (state == CustomControlsContext.STOP) {
                if (controls[i] instanceof CustomControls) {
                    ((CustomControls) controls[i]).stop();
                }
            }
        }
    }


    private Component[] controls;
    private String[] constraints = { java.awt.BorderLayout.NORTH };
}