Dojo學習14 dijit.Tree 捕獲點擊事件(execute)

時間 2019-11-17

標籤 dojo 學習 dijit.tree dijit tree 捕獲點擊事件 execute 欄目 Dojo 简体版

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14. dijit.Tree 捕獲點擊事件(execute)
對於Tree的點擊事件，和一般的事件處理是同樣的，都是publish 和 subscribe來實現的。
程序以下：
======================
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
        "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>Dijit Tree Test</title>
<style type="text/css">
@import "../../dojo/resources/dojo.css";
@import "../themes/tundra/tundra.css";
@import "css/dijitTests.css";
</style>
<script type="text/javascript" src="testBidi.js"></script>
<script type="text/javascript" src="../../dojo/dojo.js"
djConfig="parseOnLoad: true, isDebug: true"></script>
<script language="JavaScript" type="text/javascript">
dojo.require("dojo.data.JsonItemStore");
dojo.require("dijit.Tree");
dojo.require("dojo.parser"); // scan page for widgets and instantiate them
    log = console.debug;
    function treeHandler(message) {
      var nodeWidget = message.node;
      if (nodeWidget == null) {
     return;
      }
      log(message.event);
      var nodeLabel = nodeWidget.label;
      var nodeItem = nodeWidget.item;

      log('>>> nodeLabel: '    + nodeLabel);
      log('>>> nodeItem.id: ' + nodeItem.id);
      log('>>> nodeItem.type: ' + nodeItem.type);
      //log('>>> nodeItem.sex: ' + nodeItem.sex);
      //other props

    }


    function init() {
     //add listener
     dojo.subscribe("tree", null, treeHandler);

    }
    dojo.addOnLoad(init);javascript

</script>
</head>
<body class="tundra">
<h1 class="testTitle">Dijit Tree Test</h1>
<div dojoType="dojo.data.JsonItemStore" jsId="continentStore"
url="../tests/countries.json"></div>
<div dojoType="dijit.Tree" id=tree store="continentStore" query="{type:'continent'}"
labelAttr="name" typeAttr="type"></div>
<button onclick="dijit.byId('tree').destroyRecursive();">destroy</button>  
<button onclick="addChildren()">publish</button>
</body>
</html>
css

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