定制:搜索框(Customizing: Search Field)

Posted 周三, 06/25/2008 - 14:12 by admin

演示(demo)地址在文章最后.

效果图如下

主要文件custom.html,custom.js。

custom.html

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
    <title>Custom Fields</title>
    <link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" />

    <!-- GC -->
 	<!-- LIBS -->
 	<script type="text/javascript" src="../../adapter/ext/ext-base.js"></script>
 	<!-- ENDLIBS -->

    <script type="text/javascript" src="../../ext-all.js"></script>

    <script type="text/javascript" src="SearchField.js"></script>
    <script type="text/javascript" src="custom.js"></script>
    <link rel="stylesheet" type="text/css" href="combos.css" />

    <style type="text/css">
        #search-results a {
            color: #385F95;
            font:bold 11px tahoma, arial, helvetica, sans-serif;
            text-decoration:none;
        }
        #search-results a:hover {
            text-decoration:underline;
        }
        #search-results .search-item {
            padding:5px;
        }
        #search-results p {
            margin:3px !important;
        }
        #search-results {
            border-bottom:1px solid #ddd;
            margin: 0 1px;
            height:300px;
            overflow:auto;
        }
        #search-results .x-toolbar {
            border:0 none;
        }
    </style>

    <!-- Common Styles for the examples -->
    <link rel="stylesheet" type="text/css" href="../examples.css" />
</head>
<body>
<script type="text/javascript" src="../examples.js"></script><!-- EXAMPLES -->
<p>
    <b>Custom Form Fields</b><br />
    Ext provides many types of form fields to build interactive and rich forms. However, it also
    provides a complete framework for building new types of fields quickly. The search field below
    is an example.
</p>
<p>The js is not minified so it is readable. See <a href="custom.js">custom.js</a>.</p>

<div style="width:600px;" id="search-panel">
</div>

</body>
</html>

custom.js

/*
 * Ext JS Library 2.0.2
 * Copyright(c) 2006-2008, Ext JS, LLC.
 * 
 * 
 * http://extjs.com/license
 */

Ext.onReady(function(){
    var ds = new Ext.data.Store({
        proxy: new Ext.data.ScriptTagProxy({
            url: 'http://extjs.com/forum/topics-remote.php'
        }),
        reader: new Ext.data.JsonReader({
            root: 'topics',
            totalProperty: 'totalCount',
            id: 'post_id'
        }, [
            {name: 'postId', mapping: 'post_id'},
            {name: 'title', mapping: 'topic_title'},
            {name: 'topicId', mapping: 'topic_id'},
            {name: 'author', mapping: 'author'},
            {name: 'lastPost', mapping: 'post_time', type: 'date', dateFormat: 'timestamp'},
            {name: 'excerpt', mapping: 'post_text'}
        ]),

        baseParams: {limit:20, forumId: 4}
    });

    // Custom rendering Template for the View
    var resultTpl = new Ext.XTemplate(
        '<tpl for=".">',
        '<div class="search-item">',
            '<h3><span>{lastPost:date("M j, Y")}<br />by {author}</span>',
            '<a href="http://extjs.com/forum/showthread.php?t={topicId}&p={postId}" target="_blank">{title}</a></h3>',
            '<p>{excerpt}</p>',
        '</div></tpl>'
    );

    var panel = new Ext.Panel({
        applyTo: 'search-panel',
        title:'Forum Search',
        height:300,
        autoScroll:true,

        items: new Ext.DataView({
            tpl: resultTpl,
            store: ds,
            itemSelector: 'div.search-item'
        }),

        tbar: [
            'Search: ', ' ',
            new Ext.app.SearchField({
                store: ds,
                width:320
            })
        ],

        bbar: new Ext.PagingToolbar({
            store: ds,
            pageSize: 20,
            displayInfo: true,
            displayMsg: 'Topics {0} - {1} of {2}',
            emptyMsg: "No topics to display"
        })
    });

    ds.load({params:{start:0, limit:20, forumId: 4}});
});

演示地址:http://extjs.org.cn/extjs/examples/form/custom.html