《wicket学习十四》&LifeCycleStages

今天我们来跑一下这个程序，点击一个按钮，通过wicket的replace来切换label，如下所示。

来我们来看一下，homePage.java

public class HomePage extends WebPage {
    private static final long serialVersionUID = 1L;
    private Label firstLabel;
    private Label secondLabel;

    public HomePage(){
        firstLabel = new Label("label", "First label");
        secondLabel = new Label("label", "Second label");

        add(firstLabel);

        add(new Link<Void>("reload"){
            @Override
            public void onClick() {

            }
        });

    }

    @Override
    protected void onBeforeRender() {
        super.onBeforeRender();
        if(contains(firstLabel, true))
            replace(secondLabel);
        else
            replace(firstLabel);
    }
}

对应的html页面

<html xmlns:wicket="http://wicket.apache.org">
<head>
    <meta charset="utf-8" />
    <title>Apache Wicket Quickstart</title>
    <link href='http://fonts.googleapis.com/css?family=Yanone+Kaffeesatz:regular,bold' rel='stylesheet' type='text/css' />
    <link rel="stylesheet" href="style.css" type="text/css" media="screen" title="Stylesheet" />
</head>
<body>
<div id="hd">
    <div id="logo">
        <img src="logo.png" width="50px" height="50px" alt="Wicket Logo" />
        <h1>Apache Wicket</h1>
    </div>
</div>
<div id="bd">

        <div wicket:id="label"></div>
        <button wicket:id="reload">Reload</button>

</div>
<div id="ft">
</div>
</body>
</html>

《wicket学习十四》&LifeCycleStages

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