《wicket学习二十一》&OnComponentTagExample-优快云博客

本文链接：https://blog.youkuaiyun.com/u010608964/article/details/89913640

这添加两个label的例子，如下所示。

其中,homepage.java

public class HomePage extends WebPage{
    public HomePage() {
        add(new Label("onComponentTag", "Test value"){
            @Override
            protected void onComponentTag(ComponentTag tag) {
                super.onComponentTag(tag);

                //Turn the h1 tag to a span
                tag.setName("span");
                //Add formatting style
                tag.put("style", "font-weight:bold");
            }
        });

        //onComponentTagBody example
        add(new Label("onComponentTagBody", ""){
            @Override
            public void onComponentTagBody(MarkupStream markupStream,
                                           ComponentTag tag) {
                if(!isEnabled())
                    replaceComponentTagBody(markupStream, tag, "(the component is disabled)");
                else
                    super.onComponentTagBody(markupStream, tag);
            }
        }.setEnabled(false));
    }
}

html文件

<html lang="en" xmlns:wicket="http://wicket.apache.org">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
This label overrides onComponentTag and turns tag h1 to
span:
<h1 wicket:id="onComponentTag">Test value</h1>
<br />
This label overrides onComponentTagBody and displays a
custom value when it is disabled:
<span wicket:id="onComponentTagBody">Test value</span>
</body>
</html>

webapplication

public class WicketApplication extends WebApplication {
    @Override
    public Class<? extends Page> getHomePage() {
        return HomePage.class;
    }
}