wicket中DropDownChoice的使用及取值

墨蓝 2022-04-15 02:18 169阅读 0赞

import java.util.ArrayList;  
import java.util.HashMap;  
import java.util.List;  
import java.util.Map;  
import jp.co.infomart.foods.common.admin.page.BasePage;  
import org.apache.wicket.ajax.AjaxRequestTarget;  
import org.apache.wicket.ajax.markup.html.form.AjaxButton;  
import org.apache.wicket.markup.html.form.ChoiceRenderer;  
import org.apache.wicket.markup.html.form.DropDownChoice;  
import org.apache.wicket.markup.html.form.Form;  
import org.apache.wicket.markup.html.form.IChoiceRenderer;  
import org.apache.wicket.model.PropertyModel;  
  
/\*\*  
\*  
\* @author admin  
\*/  
public class Test\_DropDownChoice extends BasePage \{  
private Form form;  
private static List SITES = new ArrayList();  
private static Map NAMES = new HashMap();  
private DropDownModel1 ddModel;  
static\{  
SITES.add("http://www.sina.com.cn");  
SITES.add("http://www.sohu.com");  
SITES.add("http://www.163.com");  
  
NAMES.put("http://www.sina.com.cn", "新浪"); //显示汉字  
NAMES.put("http://www.sohu.com", "搜虎");  
NAMES.put("http://www.163.com", "网易");  
\}  
  
IChoiceRenderer renderer = new ChoiceRenderer() \{ //使用这个接口来显示上面的文字  
public Object getDisplayValue(Object object) \{  
return NAMES.get(object);  
\}  
\};  
  
public Test\_DropDownChoice()\{  
super();  
form = new Form("myForm");  
this.add(form);  
ddModel = new DropDownModel1();  
DropDownChoice siteChoice = new DropDownChoice("sites",new PropertyModel(ddModel,"choList"),SITES,renderer);  
form.add(siteChoice);  
siteChoice.setRequired(true);  
siteChoice.setNullValid(true);  
siteChoice.setDefaultModelObject(ddModel.getChoList());  
AjaxButton ajaxButton = new AjaxButton("ajaxButton") \{  
  
@Override  
protected void onSubmit(AjaxRequestTarget art, Form<?> form) \{  
System.out.println(ddModel.getChoList());  
\}  
  
@Override  
protected void onError(AjaxRequestTarget art, Form<?> form) \{  
throw new UnsupportedOperationException("Not supported yet.");  
\}  
\};  
form.add(ajaxButton);  
\}  
\}  
  
  
<html>  
  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>test</title>  
</head>  
<body bgcolor="\#FFFFFF" text="\#000000" topmargin="0" leftmargin="0" marginwidth="0" marginheight="0" onUnload="fCloseWin()">  
<form wicket:id="myForm">  
<select wicket:id="sites"></select>  
<input type="submit" wicket:id="ajaxButton"/>  
</form>  
</body>  
</html>  
  
  
<html>  
  
<head>  
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">  
<title>test</title>  
</head>  
<body bgcolor="\#FFFFFF" text="\#000000" topmargin="0" leftmargin="0" marginwidth="0" marginheight="0" onUnload="fCloseWin()">  
<form wicket:id="myForm">  
<select wicket:id="sites"></select>  
<input type="submit" wicket:id="ajaxButton"/>  
</form>  
</body>  
</html>