//转为小写的装饰器
public class LowerDecorator extends Decorator{
    public LowerDecorator(ICompoment compoment) {
        super(compoment);
    }

    @Override
    public String display(String str) {
        String display = super.display(str);
        String transform = transform(display);
        return transform;
    }

    @Override
    public String transform(String str) {
        System.out.println("invoke lowerDecorator....");
        return str.toLowerCase();
    }
}

//裁剪、扩充装饰器
public class ExtendOrSplitDecorator extends Decorator {
    public ExtendOrSplitDecorator(ICompoment compoment) {
        super(compoment);
    }

    @Override
    public String display(String str) {
        String display = super.display(str);
        String transform = transform(display);
        return transform;
    }

    @Override
    public String transform(String str) {
        System.out.println("invoke ExtendOrSplitDecorator....");
        if (str != null) {
            if (str.length() > 10) {
                return str.substring(0,10);
            }else{
                int repeatCount = 10 -str.length();
                StringBuilder sb = new StringBuilder(str);
                for (int i = 0; i < repeatCount; i++) {
                    sb.append("!");
                }
                return sb.toString();
            }
        }
        return null;
    }
}

//测试代码
public static void main(String[] args) {
        //将输入内容转为大写，再反转
        ReverseDecorator reverseDecorator = new ReverseDecorator(new UpperDecorator(new DetailCompoment()));
        String display = reverseDecorator.display("wo shi zhongguo ren.");
        System.out.println(display);

        //将输入内容转为小写，在裁剪或者扩展
        ExtendOrSplitDecorator decorator = new ExtendOrSplitDecorator(new LowerDecorator(new DetailCompoment()));
        String display1 = decorator.display("I Love");
        System.out.println(display1);

        //将输入内容转为小写，再反转，然后加密
        EncodeDecorator decorator1 = new EncodeDecorator(new ReverseDecorator(new LowerDecorator(new DetailCompoment())));
        String display2 = decorator1.display("顶级机密：1941年12月 日本偷袭珍珠港！ 银行密码是:1234ADC");
        System.out.println(display2);
        System.out.println("++++++++++");
        //将输入内容先反转、再转为小写，然后加密
        EncodeDecorator decorator2 = new EncodeDecorator(new LowerDecorator(new ReverseDecorator(new DetailCompoment())));
        String display3 = decorator2.display("顶级机密：1941年12月 日本偷袭珍珠港！ 银行密码是:1234ADC");
        System.out.println(display3);

        System.out.println("============");
        //对上面的加密内容，进行解密
        DecodeDecorator decodeDecorator = new DecodeDecorator(decorator1);
        String display4 = decodeDecorator.display("顶级机密：1941年12月 日本偷袭珍珠港！ 银行密码是:1234ADC");
        System.out.println(display4);
    }