import java.util.ArrayList;
import java.util.List;

interface Widget {
	public void print();
}

class NamedWidget implements Widget{
	String name;
	
	public NamedWidget(String name) {
		this.name = name;
	}
	
	public void print() {
		System.out.println("print "+ this.getClass().getName() + "("+ name + ")" );
	}
}

class ContainerWidget extends NamedWidget {
	List<Widget> children;
	
	public ContainerWidget(String name) {
		super(name);
		children = new ArrayList<Widget>();
	}
	
	public void addChildWidget(Widget widget) {
		children.add(widget);
	}
	
	public void print() {
		super.print();
		for(Widget widget:children) {
			widget.print();
		}
	}
}
class WinForm extends ContainerWidget {
	public WinForm(String name) {
		super(name);
	}
}

class Picture extends NamedWidget {
	public Picture(String name) {
		super(name);
	}	
}

class Button extends NamedWidget {
	public Button(String name) {
		super(name);
	}	
}

class Frame extends ContainerWidget {
	public Frame(String name) {
		super(name);
	}	
}

class Label extends NamedWidget {
	public Label(String name) {
		super(name);
	}	
}

class TextBox extends NamedWidget {
	public TextBox(String name) {
		super(name);
	}	
}

class PasswordBox extends NamedWidget {
	public PasswordBox(String name) {
		super(name);
	}	
}

class CheckBox extends NamedWidget {
	public CheckBox(String name) {
		super(name);
	}	
}

class LinkLabel extends NamedWidget {
	public LinkLabel(String name) {
		super(name);
	}	
}

public class CompositeSample {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		WinForm form = new WinForm("WINDOW窗口");
		form.addChildWidget(new Picture("LOGO图片"));
		form.addChildWidget(new Button("登陆"));
		form.addChildWidget(new Button("注册"));
		
		Frame frame = new Frame("FRAME1");
		frame.addChildWidget(new Label("用户名"));
		frame.addChildWidget(new TextBox("文本框"));
		frame.addChildWidget(new Label("密码"));
		frame.addChildWidget(new PasswordBox("密码框"));
		frame.addChildWidget(new CheckBox("复选框"));
		frame.addChildWidget(new TextBox("忘记用户名"));
		frame.addChildWidget(new TextBox("忘记密码"));
		
		form.addChildWidget(frame);
		
		form.print();
	}

}