XForms/帶有插入來源的深層複製
< XForms
您想從模板中新增一個新的例項或元素。您想對模型中從一個例項到另一個例項的複雜 XML 進行深層複製。
我們將使用 XForms xf:insert 元素，並將 origin 屬性設定為源例項。我們將使用 nodeset 屬性來指示資料應該被複制到哪裡。
<html
xmlns="http://www.w3.org/1999/xhtml"
xmlns:ev="http://www.w3.org/2001/xml-events"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xf="http://www.w3.org/2002/xforms">
<head>
<title>Using Origin to do a Deep Copy between instances</title>
<style type="text/css">
@namespace xf url("http://www.w3.org/2002/xforms");
body {font-family:Helvetica, sans-serif}
#source-repeat {border: blue solid 1px;}
#destination-repeat {border: green solid 1px;}
</style>
<xf:model>
<xf:instance xmlns="" id="source">
<data>
<a>A1</a>
<a>A2</a>
<a>A3</a>
</data>
</xf:instance>
<xf:instance xmlns="" id="destination">
<data/>
</xf:instance>
</xf:model>
</head>
<body>
<h1>Example of deep copy using XForms insert origin</h1>
<h3>Source:</h3>
<xf:repeat id="source-repeat" nodeset="instance('source')/a">
<xf:output ref="."/>
</xf:repeat>
<h3>Destination:</h3>
<xf:repeat id="destination-repeat" nodeset="instance('destination')/a">
<xf:output ref="."/>
</xf:repeat>
<xf:trigger>
<xf:label>Copy data from source to destination</xf:label>
<xf:action ev:event="DOMActivate">
<xf:insert
origin="instance('source')"
nodeset="instance('destination')"/>
</xf:action>
</xf:trigger>
</body>
</html>