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В издании XForms · страница 67 из 137
Motivation
Here is an example web service provided by Amazon. It also uses the custom control to bind images from the output to the screen.
Link to XForms Application
Sample Program
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:xf="http://www.w3.org/2002/xforms"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/1999/XMLSchema-instance"
xmlns:ev="http://www.w3.org/2001/xml-events">;
<head>
<title>Searching Amazon</title>
<xf:model id="mQuery">
<xf:instance id="iQuery">
<instanceData xmlns="">
<t>webservices-20</t>
<dev-t>D1723OX2631XW0</dev-t>
<KeywordSearch>xforms</KeywordSearch>
<mode>books</mode>
<type>lite</type>
<page>1</page>
<f>xml</f>
</instanceData>
</xf:instance>
<xf:instance id="iResults">
<instanceData xmlns=""/>
</xf:instance>
<xf:bind id="bndResults" nodeset="instance('iResults')/Details"/>
<xf:submission
id="subAmazonQuery"
action="http://xml.amazon.com/onca/xml3"
method="get"
separator="&"
ref="instance('iQuery')"
replace="instance"
instance="iResults"
omit-xml-declaration="yes"/>
<xf:submission
id="subTestAmazonQuery"
action="http://xml.amazon.com/onca/xml3"
method="get"
separator="&"
ref="instance('iQuery')"
replace="all"/>
</xf:model>
<bindings id="xformsBindings"
xmlns="http://www.mozilla.org/xbl"
xmlns:html="http://www.w3.org/1999/xhtml">;
<binding id="output-image"
extends="chrome://xforms/content/xforms.xml#xformswidget-base">
<content>
<html:div>
<html:img anonid="content" style="margin-right: 5px;"/>
</html:div>
</content>
<implementation implements="nsIXFormsUIWidget">
<method name="refresh">
<body>
var img = document.getAnonymousElementByAttribute(this, "anonid", "content");
img.setAttribute("src", this.stringValue);
return true;
</body>
</method>
</implementation>
</binding>
</bindings>
<style type="text/css">
@namespace xf url(http://www.w3.org/2002/xforms);
body {
font-family: Helvetica, sans-serif;
}
-- Bind the custom control to output with class="image" -->
xf|output.image {
-moz-binding: url('#output-image');
}
</style>
</head>
<body>
<h1>Search Amazon With XForms Web Service</h1>
<xf:input ref="KeywordSearch">
<xf:label>Search string: </xf:label>
</xf:input>
<hr/>
<xf:submit submission="subAmazonQuery">
<xf:label>Search Amazon</xf:label>
</xf:submit>
<xf:submit submission="subTestAmazonQuery">
<xf:label>Show results as XML</xf:label>
</xf:submit>
<xf:repeat bind="bndResults">
<xf:output class="image" value="ImageUrlSmall"/>
<xf:trigger appearance="minimal" style="cursor: hand;">
<xf:output ref="ProductName"><xf:label>Title: </xf:label></xf:output>
<br/>
<xf:output ref="Authors/Author"><xf:label>Author: </xf:label></xf:output>
<xf:load ev:event="DOMActivate" ref="@url" show="new"/>
</xf:trigger>
<br/>
<hr/>
</xf:repeat>
</body>
</html>
Discussion
Note: If you get the following error:
XML Parsing Error: not well-formed
Line Number 33, Column 23:
separator="&"
You will have to remember to escape the ampersand before after you copy and paste this example into your text editor. You can get around this by doing a copy from the edit panel or just putting the following into the separator field:
separator="&"
References
This program was based on an example provided by formsPlayer
[1].
Where this page came from
This page was imported from Wikibooks. From “XForms” on Wikibooks, by its contributors, under CC BY-SA 4.0. Changed here: set as a page; navigation and edit links left out; each image under its own licence, credited in its caption.
Nobody has written it yet — it is the source material at a new address, which is why search engines are asked to skip it and why no one earns from it. It is up for grabs: take it on, and it is yours to rewrite and to earn from.
В изданияхXForms
Лицензия: CC BY-SA 4.0 · По материалам en.wikibooks.org
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