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YUI Library Examples: AutoComplete Control: Find Photos on Flickr

AutoComplete Control: Find Photos on Flickr

This example uses AutoComplete to find images by tag from the Flickr webservice. A simple PHP proxy is used to access the remote server via XHR. The generateRequest() method has been customized in order send additional required parameters to the Flickr application. The formatResult() method has been customized in order to display images in the results container, and the default CSS has been enhanced so the results container can scroll. Finally, a itemSelectEvent handler has been defined to collect selected images in a separate container.

Implementers who are working with data from third-party sources, user input data, or otherwise untrustworthy sources should be sure to read the Security Considerations section of the AutoComplete user guide.

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Selections

Sample Code

CSS:

1#flickrselections { 
2    float:right; 
3    width:240px; 
4    padding:10px; 
5    background-color:#FFA928; 
6} 
7
8#flickrselections h5 { 
9    color:#009; 
10    margin:0; 
11} 
12 
13/* custom styles for scrolling container */ 
14#flickrautocomplete { 
15    width:15em; /* set width of widget here */ 
16    padding-bottom:2em; 
17} 
18#flickrautocomplete .yui-ac-content { 
19    max-height:30em;overflow:auto;overflow-x:hidden; /* set scrolling */ 
20    _height:30em; /* ie6 */ 
21} 
22#flickrautocomplete .flickrImg { 
23    width:6em;height:6em;padding:.1em;vertical-align:middle; 
24} 
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Markup:

1<label for="flickrinput">Find photos by tag and collect your selections:</label> 
2<div id="flickrselections"> 
3    <h5>Selections</h5> 
4    <div id="photos"></div> 
5</div> 
6 
7<div id="flickrautocomplete"> 
8    <input id="flickrinput" type="text"> 
9    <div id="flickrcontainer"></div> 
10</div> 
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JavaScript:

1YAHOO.example.ACFlickr = function() { 
2    // Set up a local proxy to YQL 
3    var myDS = new YAHOO.util.XHRDataSource("assets/php/yql_proxy.php?format=xml&q=select%20*%20from%20flickr.photos.search"); 
4    myDS.responseSchema = { 
5        resultNode: "photo", 
6        fields: ["title", "id", "owner", "secret", "server"] 
7    }; 
8    myDS.responseType = YAHOO.util.XHRDataSource.TYPE_XML; 
9    myDS.maxCacheEntries = 100; 
10 
11    // Instantiate AutoComplete 
12    var myAC = new YAHOO.widget.AutoComplete("flickrinput","flickrcontainer", myDS); 
13    myAC.resultTypeList = false; 
14    myAC.suppressInputUpdate = true; 
15    myAC.generateRequest = function(sQuery) { 
16        return "%20where%20tags%3D%22"+sQuery+"%22"; 
17    }; 
18 
19    // Helper function to generate the img tag 
20    var getImgMarkup = function(oPhoto, sSize) { 
21        var sUrl = "http://static.flickr.com/" + 
22            oPhoto.server + 
23            "/" + 
24            oPhoto.id + 
25            "_" + 
26            oPhoto.secret + 
27            "_"+ (sSize || "s") +".jpg"; 
28        return '<img src="' + sUrl + '" class="flickrImg" alt="' + oPhoto.title + '">'; 
29    }; 
30 
31    // Helper function to generate the link tag 
32    var getImgLink = function(oPhoto) { 
33        return '<a href="http://www.flickr.com/photos/' + oPhoto.owner + "/" + oPhoto.id + '">'; 
34    }; 
35 
36    // Custom formatting to display photos in the suggestions container 
37    myAC.formatResult = function(oResultItem, sQuery) { 
38        // This was defined by the schema array of the data source 
39        var sTitle = oResultItem.title, 
40            sMarkup = getImgMarkup(oResultItem) + " " + sTitle; 
41        return (sMarkup); 
42    }; 
43 
44    // Selecting a photo adds it to the selections area 
45    myAC.itemSelectEvent.subscribe(function(sType, aArgs){ 
46        var oPhoto = aArgs[2]; 
47        YAHOO.util.Dom.get("photos").innerHTML = 
48            '<p>' + getImgLink(oPhoto) + 
49                getImgMarkup(oPhoto, "m")+'</a></p>'+ 
50                YAHOO.util.Dom.get("photos").innerHTML; 
51    }); 
52 
53    return { 
54        oDS: myDS, 
55        oAC: myAC 
56    }; 
57}(); 
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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.

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