我正在尝试在我的项目中使用 wicket 框架,但我不太清楚组件的一些内容。
例如,我想创建一个组件 — javascript 网格 (jqGrid)。我只需要:
1. create <table id="#jqGrid1"></table>
2. insert javascript at <head> section:
<script type="text/javascript">
$(document).ready(function () { $('#jqGrid1').jqGrid() });
</script>
因此,我创建了 java 类 JqTable。
package kz.primesource.wicket.component;
import kz.primesource.db.docflow.TableColumn;
import org.apache.wicket.markup.html.IHeaderContributor;
import org.apache.wicket.markup.html.IHeaderResponse;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.protocol.http.WebApplication;
import org.json.simple.JSONObject;
import java.util.ArrayList;
public class JqTable extends Panel implements IHeaderContributor {
private String id;
private String url;
private String editurl;
private String datatype;
private String mtype;
private String autoencode;
private ArrayList<TableColumn> columns;
private int rowNum;
private ArrayList<Integer> rowList;
private String pager;
private String caption;
private boolean isShrinkToFit;
private int width;
private int height;
private boolean isToolbarVisibile;
private String toolbarPosition;
public JqTable(String id) {
super(id);
this.id = id;
}
public void renderHead(IHeaderResponse response) {
JSONObject jsonObject = new JSONObject();
jsonObject.put("width",new Integer(100));
jsonObject.put("height", new Integer(200));
String options = jsonObject.toJSONString();
String contextPath = WebApplication.get().getServletContext().getContextPath();
response.renderJavascriptReference(contextPath + "/js/jquery.jqGrid.min.js");
response.renderJavascript("$(document).ready(function() { options = " + options + ";$('#jqGrid" + id + "').jqGrid(options); });", id);
this.setMarkupId(id);
this.setOutputMarkupId(true);
}
以及此类 JqGrid.html 的相应 html:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
</head>
<body>
<wicket:panel>
<table id="jqGrid1" style="width:100%;height:200px">
</table>
</wicket:panel>
</body>
</html>
而且我无法理解如何更改组件代码。 IE。为页面上的每个下一个网格生成新 ID。我的意思是,我无法理解原理,如何更改组件内的 html 数据,如果不仅有一个标签,而且标签之间存在层次结构。
最佳答案
你快到了,但让 wicket 为你管理 ids:
private Component gridComponent;
public JqTable(final String id){
super(id);
gridComponent = new WebMarkupContainer("grid").setOutputMarkupId(true);
add(gridComponent);
}
@Override
public void renderHead(final IHeaderResponse response){
final String options = "{json}"; // code stripped so I don't need to
// include json in my classpath
final String contextPath = "context"; // dito with servlet api
response.renderJavascriptReference(contextPath
+ "/js/jquery.jqGrid.min.js");
response.renderJavascript("$(document).ready(function() { options = "
+ options + ";$('#" + gridComponent.getMarkupId()
+ "').jqGrid(options); });", gridComponent.getMarkupId());
// btw wicket has it's own domready mechanism, so you could also write it like this:
response.renderOnDomReadyJavascript("options = "
+ options + ";$('#" + gridComponent.getMarkupId()
+ "').jqGrid(options);");
}
和 html:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title></title>
</head>
<body>
<wicket:panel>
<table wicket:id="grid" style="width:100%;height:200px">
</table>
</wicket:panel>
</body>
</html>
关于java - Wicket:编写自己的组件,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3522282/