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YUI Library Examples: AutoComplete Control: Custom Formatting, with a Proxyless Remote DataSource

AutoComplete Control: Custom Formatting, with a Proxyless Remote DataSource

This AutoComplete instance uses a ScriptNodeDataSource to to find images from the YQL webservice without a proxy. The generateRequest() method must be customized to comply with the open API. Please note that the ScriptNodeDataSource requires that the webservice support a callback mechanism.

A custom formatter function is defined in order to show thumbnail images in the results container.

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Sample Code

Data:

1{ 
2 "query": { 
3  "count": "10", 
4  "created": "2009-04-03T09:49:28Z", 
5  "lang": "en-US", 
6  "updated": "2009-04-03T09:49:28Z", 
7  "uri": "http://query.yahooapis.com/v1/yql?q=select+*+from+search.images+where+query%3D%22puppy%22+and+mimetype+like+%22%25jpeg%25%22", 
8  "diagnostics": { 
9   "publiclyCallable": "true", 
10   "url": { 
11    "execution-time": "47", 
12    "content": "http://boss.yahooapis.com/ysearch/images/v1/puppy?format=xml&start=0&count=10" 
13   }, 
14   "user-time": "50", 
15   "service-time": "47", 
16   "build-version": "911" 
17  }, 
18  "results": { 
19   "result": [ 
20    { 
21     "abstract": null, 
22     "clickurl": "http://lrd.yahooapis.com/_ylc=X3oDMTQ4djBydWlmBF9TAzIwMjMxNTI3MDIEYXBwaWQDb0pfTWdwbklrWW5CMWhTZnFUZEd5TkouTXNxZlNMQmkEY2xpZW50A2Jvc3MEc2VydmljZQNCT1NTBHNsawN0aXRsZQRzcmNwdmlkA0tPWDFWa2dlQXUxQ3I1Lm9zeG1zeWdUMDJKRTJEMG5XaEdnQUNGQUo-/SIG=12he0tu52/**http%3A//www.pc-wallpapers.co.uk/wallpapers/Animals/dogs/lonely_puppy_1024.jpg", 
23     "date": "2005/04/18", 
24     "filename": "lonely_puppy_1024.jpg", 
25     "format": "jpeg", 
26     "height": "768", 
27     "mimetype": "image/jpeg", 
28     "refererclickurl": "http://lrd.yahooapis.com/_ylc=X3oDMTQ4djBydWlmBF9TAzIwMjMxNTI3MDIEYXBwaWQDb0pfTWdwbklrWW5CMWhTZnFUZEd5TkouTXNxZlNMQmkEY2xpZW50A2Jvc3MEc2VydmljZQNCT1NTBHNsawN0aXRsZQRzcmNwdmlkA0tPWDFWa2dlQXUxQ3I1Lm9zeG1zeWdUMDJKRTJEMG5XaEdnQUNGQUo-/SIG=12c8c25vo/**http%3A//www.pc-wallpapers.co.uk/viewer.php%3Fcmax=4%26cat=DO%26id=000001", 
29     "refererurl": "http://www.pc-wallpapers.co.uk/viewer.php?cmax=4&cat=DO&id=000001", 
30     "size": "85300", 
31     "thumbnail_height": "120", 
32     "thumbnail_url": "http://thm-a01.yimg.com/image/21a5b2d2b9d3aa14", 
33     "thumbnail_width": "160", 
34     "title": "lonely_puppy_1024.jpg", 
35     "url": "http://www.pc-wallpapers.co.uk/wallpapers/Animals/dogs/lonely_puppy_1024.jpg", 
36     "width": "1024" 
37    } 
38    ... 
39   ] 
40  } 
41 } 
42} 
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CSS:

1label { 
2    color:#E76300; 
3    font-weight:bold; 
4} 
5#myAutoComplete { 
6    width:30em; /* set width here or else widget will expand to fit its container */ 
7    padding-bottom:2em; 
8} 
9/* styles for custom formatting */ 
10.yui-ac .result {position:relative;height:62px;} 
11.yui-ac .name {position:absolute;bottom:0;left:64px;} 
12.yui-ac .img {position:absolute;top:0;left:0;width:58px;height:58px;border:1px solid black;background-color:black;color:white;} 
13.yui-ac .imgtext {position:absolute;width:58px;top:50%;text-align:center;} 
14.yui-ac img {width:60px;height:60px;margin-right:4px;} 
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Markup:

1<label for="myInput">Yahoo! Image Search:</label> 
2<div id="myAutoComplete"> 
3    <input id="myInput" type="text" name="p"> 
4    <div id="myContainer"></div> 
5</div> 
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JavaScript:

1YAHOO.example.CustomFormatting = (function(){ 
2    // Instantiate DataSource 
3    var oDS = new YAHOO.util.ScriptNodeDataSource("http://query.yahooapis.com/v1/public/yql?"); 
4    oDS.responseSchema = { 
5        resultsList: "query.results.result", 
6        fields: ["url", "thumbnail_url", "clickurl"] 
7    }; 
8 
9    // Setting to default value for demonstration purposes. 
10    // The webservice needs to support execution of a callback function. 
11    oDS.scriptCallbackParam = "callback"; 
12 
13    // Instantiate AutoComplete 
14    var oAC = new YAHOO.widget.AutoComplete("myInput","myContainer", oDS); 
15 
16    // Bump up the query delay to reduce server load 
17    oAC.queryDelay = 1; 
18 
19    // The webservice needs custom parameters 
20    oAC.generateRequest = function(sQuery) { 
21        return "q=select%20*%20from%20search.images%20where%20query%3D%22" + 
22            sQuery + 
23            "%22%20and%20mimetype%20like%20%22%25jpeg%25%22&format=json"; 
24    }; 
25 
26    // Result data passed as object for easy access from custom formatter. 
27    oAC.resultTypeList = false; 
28    // Customize formatter to show thumbnail images 
29    oAC.formatResult = function(oResultData, sQuery, sResultMatch) { 
30        if(oResultData.thumbnail_url) { 
31            img = "<img src=\""+ oResultData.thumbnail_url + "\">"; 
32        } 
33        else { 
34            img = "<span class=\"img\"><span class=\"imgtext\">N/A</span></span>"; 
35        } 
36        return "<div class=\"result\">" + img + " <span class=\"name\">" + sResultMatch + "</span></div>"; 
37    }; 
38    oAC.itemSelectEvent.subscribe(function(sType, aArgs) { 
39        var oData = aArgs[2]; // object literal of selected item's result data 
40 
41        // Redirect to the img 
42        window.location.href = oData.clickurl; 
43    }); 
44 
45    // Stub for form validation 
46    var validateForm = function() { 
47        // Validation code goes here 
48        return true; 
49    }; 
50 
51    return { 
52        oDS: oDS, 
53        oAC: oAC, 
54        validateForm: validateForm 
55    } 
56})(); 
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Configuration for This Example

You can load the necessary JavaScript and CSS for this example from Yahoo's servers. Click here to load the YUI Dependency Configurator with all of this example's dependencies preconfigured.

YUI Logger Output:

Note: Logging and debugging is currently turned off for this example.

Reload with logging
and debugging enabled.

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