JavaScript DHTML/YUI Library/Loader
Using Ajax for deferred loading of items
<!--
Software License Agreement (BSD License)
Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
* Douglas Crockford"s JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford"s JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
* Robert Penner"s animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner"s algorithms for easing.
* Geoff Stearns"s SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns"s SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.ru/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
* Diego Perini"s IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI"s use of this technique is included under our BSD license with the author"s permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title>Using Ajax for deferred loading of items</title>
<style type="text/css">
/*margin and padding on body element
can introduce errors in determining
element position and are not recommended;
we turn them off as a foundation for YUI
CSS treatments. */
body {
margin:0;
padding:0;
}
</style>
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/fonts/fonts-min.css" />
<link rel="stylesheet" type="text/css" href="yui_2.7.0b-lib/carousel/assets/skins/sam/carousel.css" />
<script type="text/javascript" src="yui_2.7.0b-lib/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/connection/connection-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/element/element-min.js"></script>
<script type="text/javascript" src="yui_2.7.0b-lib/carousel/carousel-min.js"></script>
<!--begin custom header content for this example-->
<style type="text/css">
/* Style the spotlight container */
#spotlight {
border: 1px solid #ccc;
height: 240px;
margin: 10px auto;
padding: 1px;
text-align: center;
width: 240px;
}
#carousel {
margin: 0;
}
#container {
margin: 0 auto;
}
.yui-skin-sam .yui-carousel-nav ul,
.yui-skin-sam .yui-carousel-nav select {
display: none;
}
.yui-carousel-element li {
height: 75px;
width: 75px;
}
</style>
<!--end custom header content for this example-->
</head>
<body class=" yui-skin-sam">
<h1>Using Ajax for deferred loading of items</h1>
<div class="exampleIntro">
<p>
This example showcases the dynamic loading capabilities of the <a href="http://developer.yahoo.ru/yui/carousel/">YUI Carousel Control</a>. The YUI Carousel Control exposes an event called <code>loadItems</code>. This
event is fired whenever the Carousel needs items to be loaded into it for
display. Subscribing to this event makes it easy to dynamically load
the next set of images.
</p>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE -->
<!-- The Carousel container -->
<div id="container">
<ol id="carousel"></ol>
</div>
<!-- The spotlight container -->
<div id="spotlight"></div>
<script>
var curpos, items = [];
function getImageTag(img) {
return "<img src=\"" + img + "\" height=\"75\" width=\"75\">";
}
function getImages() {
var carousel = this;
YAHOO.util.Connect.asyncRequest("GET", "yui_2.7.0b-assets/carousel-assets/php/getimages.php?pos="+curpos,
{
success: function (o) {
var i = curpos,
j = 0,
r = eval("(" + o.responseText + ")");
curpos += r.length;
while (i < curpos) {
if (r[j]) {
carousel.addItem(getImageTag(r[j]));
} else {
break;
}
i++;
j++;
}
carousel.set("selectedItem", carousel.get("firstVisible"));
},
failure: function (o) {
alert("Ajax request failed!");
}
});
}
// Get the image link from within its (parent) container.
function getLargeImage(parent) {
var el = parent.firstChild;
while (el) { // walk through till as long as there"s an element
if (el.nodeName.toUpperCase() == "IMG") { // found an image
// flickr uses "_s" suffix for small, and "_m" for big
// images respectively
return el.src.replace(/_s\.jpg$/, "_m.jpg");
}
el = el.nextSibling;
}
return "";
}
YAHOO.util.Event.onDOMReady(function (ev) {
var carousel, spotlight = YAHOO.util.Dom.get("spotlight");
carousel = new YAHOO.widget.Carousel("container", {
numItems: 17
});
YAHOO.util.Connect.asyncRequest("GET", "yui_2.7.0b-assets/carousel-assets/php/getimages.php", {
success: function (o) {
var i, r = eval("(" + o.responseText + ")");
curpos = r.length;
for (i = 0; i < curpos; i++) {
items.push(r[i]);
}
// check if the Carousel widget is available
if (typeof carousel != "undefined") {
for (i = 0; i < curpos; i++) {
// if so, shove the elements into it
carousel.addItem(getImageTag(items[i]));
}
carousel.set("selectedItem", 0);
items = [];
}
},
failure: function (o) {
alert("Ajax request failed!");
}
});
carousel.on("loadItems", function (o) {
// more items available?
getImages.call(this);
});
carousel.on("itemSelected", function (index) {
// item has the reference to the Carousel"s item
var item = carousel.getElementForItem(index);
if (item) {
spotlight.innerHTML = "<img src=\""+getLargeImage(item)+"\">";
}
});
carousel.render();
carousel.show();
});
</script>
<!--END SOURCE CODE FOR EXAMPLE -->
</body>
</html>
<!-- presentbright.corp.yahoo.ru uncompressed/chunked Thu Feb 19 10:53:08 PST 2009 -->
<A href="http://www.wbex.ru/Code/JavaScriptDownload/yui_2.7.0b.zip">yui_2.7.0b.zip( 4,431 k)</a>
YUI Loader Utility: Loading the YUI Calendar Control with the YUI Loader Utility
<!--
Software License Agreement (BSD License)
Copyright (c) 2009, Yahoo! Inc.
All rights reserved.
Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list of conditions and the
following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
* Neither the name of Yahoo! Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission of Yahoo! Inc.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Sources of Intellectual Property Included in the YUI Library
YUI is issued by Yahoo! under the BSD license above. Below is a list of certain publicly available software that is the source of intellectual property in YUI, along with the licensing terms that pertain to thosesources of IP. This list is for informational purposes only and is not intended to represent an exhaustive list of third party contributions to the YUI.
* Douglas Crockford"s JSON parsing and stringifying methods: In the JSON Utility, Douglas Crockford"s JSON parsing and stringifying methods are adapted from work published at JSON.org. The adapted work is in the public domain.
* Robert Penner"s animation-easing algorithms: In the Animation Utility, YUI makes use of Robert Penner"s algorithms for easing.
* Geoff Stearns"s SWFObject: In the Charts Control and the Uploader versions through 2.7.0, YUI makes use of Geoff Stearns"s SWFObject v1.5 for Flash Player detection and embedding. More information on SWFObject can be found here (http://blog.deconcept.ru/swfobject/). SWFObject is (c) 2007 Geoff Stearns and is released under the MIT License (http://www.opensource.org/licenses/mit-license.php).
* Diego Perini"s IEContentLoaded technique: The Event Utility employs a technique developed by Diego Perini and licensed under GPL. YUI"s use of this technique is included under our BSD license with the author"s permission.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>YUI Loader Utility Example: Loading YUI TreeView and Calendar with the YUI Loader Utility</title>
</head>
<body class="yui-skin-sam">
<h1>YUI Loader Utility Example: Loading the YUI Calendar Control with the YUI Loader Utility</h1>
<p>In this example, we bring a YUI component onto the page using the <a href="http://developer.yahoo.ru/yui/loader/">YUI Loader Utility</a>. This example implements YUI Loader via a <code>YAHOO.util.YUILoader</code> instance. We load the YUI Loader script file, then specify in configuration which component we want loaded on the page — and what we want to do once it <em>is</em> loaded.</p>
<div id="calendar_container"></div>
<script src="yui_2.7.0b-lib/yuiloader/yuiloader.js"></script>
<script>
var loader = new YAHOO.util.YUILoader({
require: ["calendar"], // what components?
base: "yui_2.7.0b-lib/",//where do they live?
//filter: "DEBUG", //use debug versions (or apply some
//some other filter?
//loadOptional: true, //load all optional dependencies?
//onSuccess is the function that YUI Loader
//should call when all components are successfully loaded.
onSuccess: function() {
//Once the YUI Calendar Control and dependencies are on
//the page, we"ll verify that our target container is
//available in the DOM and then instantiate a default
//calendar into it:
YAHOO.util.Event.onAvailable("calendar_container", function() {
var myCal = new YAHOO.widget.Calendar("mycal_id", "calendar_container");
myCal.render();
})
},
// should a failure occur, the onFailure function will be executed
onFailure: function(o) {
alert("error: " + YAHOO.lang.dump(o));
}
});
// Calculate the dependency and insert the required scripts and css resources
// into the document
loader.insert();
</script>
</body>
</html>
<!-- presentbright.corp.yahoo.ru uncompressed/chunked Thu Feb 19 10:53:20 PST 2009 -->
<A href="http://www.wbex.ru/Code/JavaScriptDownload/yui_2.7.0b.zip">yui_2.7.0b.zip( 4,431 k)</a>
