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<!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>Dual-thumb Slider with range highlight</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="../../build/fonts/fonts-min.css" />
<link rel="stylesheet" type="text/css" href="../../build/slider/assets/skins/sam/slider.css" />
<script type="text/javascript" src="../../build/yahoo-dom-event/yahoo-dom-event.js"></script>
<script type="text/javascript" src="../../build/dragdrop/dragdrop-min.js"></script>
<script type="text/javascript" src="../../build/slider/slider-min.js"></script>
<!--begin custom header content for this example-->
<style type="text/css">
#demo_bg {
position: relative;
background: url(../slider/assets/dual_thumb_bg.gif) 0 5px no-repeat;
height: 28px;
width: 310px;
}
#demo_bg div {
position: absolute;
cursor: default;
top: 4px;
}
#demo_bg span {
position: absolute;
background: url(../slider/assets/dual_thumb_highlight.gif) 0 0 repeat-x;
_font-size: 5px; /* prevent IE6 expanding the box height to font-size */
top: 10px;
left: 12px;
height: 13px;
width: 288px;
}
#demo_bg .caution {
background-position: 0 -13px;
}
#demo_bg .boom,
#demo_bg .danger {
background-position: 0 -26px;
}
p .ok {
color: #3a3;
font-weight: bold;
text-transform: uppercase;
}
p .caution {
background: #ff3;
color: #770;
font-weight: bold;
font-style: italic;
padding: 0 1ex;
text-transform: uppercase;
}
p .danger {
color: #f33;
font-weight: bold;
text-decoration: blink;
text-transform: uppercase;
}
p .boom {
color: #fff;
background: #000;
padding: 0 1ex;
}
</style>
<!--end custom header content for this example-->
</head>
<body class="yui-skin-sam">
<h1>Dual-thumb Slider with range highlight</h1>
<div class="exampleIntro">
<p>This example demonstrates a horizontal dual-thumb Slider with custom code to add a highlight to the bounded range. Some characteristics to note include the following:</p>
<ul>
<li>The thumbs are set on a slide bar with a 300 pixel range.</li>
<li>The thumbs are configured with a 12 pixel tick size.</li>
<li>Clicking on the background will move the nearest thumb.</li>
</ul>
</div>
<!--BEGIN SOURCE CODE FOR EXAMPLE =============================== -->
<div id="demo_bg" title="Range slider">
<span id="demo_highlight"></span>
<div id="demo_min_thumb"><img src="assets/l-thumb-round.gif"></div>
<div id="demo_max_thumb"><img src="assets/r-thumb-round.gif"></div>
</div>
<p>Range offsets: <span id="demo_range">0 - 300</span></p>
<p>Status: <span id="demo_value" class="ok">ok</span></p>
<script type="text/javascript">
(function () {
YAHOO.namespace('example');
var Dom = YAHOO.util.Dom;
// Slider has a range of 300 pixels
var range = 300;
// Set up 12 pixel ticks
var tickSize = 12;
// Some arbitrary ranges to cue status changes
var caution_range = 150,
danger_range = 75,
boom_range = 13;
YAHOO.util.Event.onDOMReady(function () {
var reportSpan = Dom.get("demo_range");
var calculatedSpan = Dom.get("demo_value");
// Create the DualSlider
var slider = YAHOO.widget.Slider.getHorizDualSlider("demo_bg",
"demo_min_thumb", "demo_max_thumb",
range, tickSize);
// Decorate the DualSlider instance with some new properties and
// methods to maintain the highlight element
YAHOO.lang.augmentObject(slider, {
_status : 'ok',
_highlight : Dom.get("demo_highlight"),
getStatus : function () { return this._status; },
updateHighlight : function () {
var delta = this.maxVal - this.minVal,
newStatus = 'ok';
if (delta < boom_range) {
newStatus = 'boom';
} else if (delta < danger_range) {
newStatus = 'danger';
} else if (delta < caution_range) {
newStatus = 'caution';
}
if (this._status !== newStatus) {
// Update the highlight class if status is changed
Dom.replaceClass(this._highlight,this._status,newStatus);
this._status = newStatus;
}
if (this.activeSlider === this.minSlider) {
// If the min thumb moved, move the highlight's left edge
Dom.setStyle(this._highlight,'left', (this.minVal + 12) + 'px');
}
// Adjust the width of the highlight to match inner boundary
Dom.setStyle(this._highlight,'width', Math.max(delta - 12,0) + 'px');
}
},true);
// Attach the highlight method to the slider's change event
slider.subscribe('change',slider.updateHighlight,slider,true);
// Create an event callback to update some display fields
var report = function () {
reportSpan.innerHTML = slider.minVal + ' - ' + slider.maxVal;
// Call our conversion function
calculatedSpan.innerHTML =
calculatedSpan.className = slider.getStatus();
};
// Subscribe to the slider's change event to report the status.
slider.subscribe('change',report);
// Attach the slider to the YAHOO.example namespace for public probing
YAHOO.example.slider = slider;
});
})();
</script>
<!--END SOURCE CODE FOR EXAMPLE =============================== -->
</body>
</html>
|
