用装饰者模式设计按钮样式

[xwbbwx110]

怎么用JAVA的装饰者模式 设计一个按钮
如：用装饰者 改变一个按钮上的字体颜色和按钮的样式

刚学 不怎么懂 希望各位前辈 给下源码

谢谢了！

[安特矮油]

写了个例子，你比对着自己写吧。

//按钮接口
public interface Button {
	public void color();
	public void style();
}

//默认button
public class DefaultButton implements Button {

	private String color = "default";
	private String style = "default sytle";
	
	protected String getColor() {
		return color;
	}

	protected void setColor(String color) {
		this.color = color;
	}

	protected String getStyle() {
		return style;
	}

	protected void setStyle(String style) {
		this.style = style;
	}

	@Override
	public void color() {
		System.out.println("button color is " + getColor());
	}

	@Override
	public void style() {
		System.out.println("button style is " + getStyle());
	}

}
//红色按钮
public class RedButton implements Button{

	private String color = "red";
	private String style = "red sytle";
	
	private DefaultButton db;
	
	public RedButton(DefaultButton db){
		this.db = db;
		db.setColor(color);
		db.setStyle(style);
	}
	
	@Override
	public void color() {
		db.color();
	}

	@Override
	public void style() {
		db.style();
	}

	protected String getColor() {
		return color;
	}

	protected void setColor(String color) {
		this.color = color;
	}

	protected String getStyle() {
		return style;
	}

	protected void setStyle(String style) {
		this.style = style;
	}

}
//测试类
public class Test{

	public static void main(String[] args) {
		RedButton rb = new RedButton(new DefaultButton());
		rb.color();
		rb.style();
	}
}