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<!DOCTYPE html>
<html lang="en">
<head>
        <meta charset="UTF-8" />
        <title>jQuery UI Slider - Slider scrollbar</title>
        <link type="text/css" href="../../themes/base/jquery.ui.all.css" rel="stylesheet" />
        <script type="text/javascript" src="../../jquery-1.4.2.js"></script>
        <script type="text/javascript" src="../../ui/jquery.ui.core.js"></script>
        <script type="text/javascript" src="../../ui/jquery.ui.widget.js"></script>
        <script type="text/javascript" src="../../ui/jquery.ui.mouse.js"></script>
        <script type="text/javascript" src="../../ui/jquery.ui.slider.js"></script>
        <link type="text/css" href="../demos.css" rel="stylesheet" />
        <style type="text/css">
                #demo-frame > div.demo { padding: 10px !important; }
                .scroll-pane { overflow: auto; width: 99%; float:left; }
                .scroll-content { width: 2440px; float: left; }
                .scroll-content-item { width: 100px; height: 100px; float: left; margin: 10px; font-size: 3em; line-height: 96px; text-align: center; }
                * html .scroll-content-item { display: inline; } /* IE6 float double margin bug */
                .scroll-bar-wrap { clear: left; padding: 0 4px 0 2px; margin: 0 -1px -1px -1px; }
                .scroll-bar-wrap .ui-slider { background: none; border:0; height: 2em; margin: 0 auto;  }
                .scroll-bar-wrap .ui-handle-helper-parent { position: relative; width: 100%; height: 100%; margin: 0 auto; }
                .scroll-bar-wrap .ui-slider-handle { top:.2em; height: 1.5em; }
                .scroll-bar-wrap .ui-slider-handle .ui-icon { margin: -8px auto 0; position: relative; top: 50%; }
        </style>
        <script type="text/javascript">
        $(function() {
                //scrollpane parts
                var scrollPane = $('.scroll-pane');
                var scrollContent = $('.scroll-content');
                
                //build slider
                var scrollbar = $(".scroll-bar").slider({
                        slide:function(e, ui){
                                if( scrollContent.width() > scrollPane.width() ){ scrollContent.css('margin-left', Math.round( ui.value / 100 * ( scrollPane.width() - scrollContent.width() )) + 'px'); }
                                else { scrollContent.css('margin-left', 0); }
                        }
                });
                
                //append icon to handle
                var handleHelper = scrollbar.find('.ui-slider-handle')
                .mousedown(function(){
                        scrollbar.width( handleHelper.width() );
                })
                .mouseup(function(){
                        scrollbar.width( '100%' );
                })
                .append('<span class="ui-icon ui-icon-grip-dotted-vertical"></span>')
                .wrap('<div class="ui-handle-helper-parent"></div>').parent();
                
                //change overflow to hidden now that slider handles the scrolling
                scrollPane.css('overflow','hidden');
                
                //size scrollbar and handle proportionally to scroll distance
                function sizeScrollbar(){
                        var remainder = scrollContent.width() - scrollPane.width();
                        var proportion = remainder / scrollContent.width();
                        var handleSize = scrollPane.width() - (proportion * scrollPane.width());
                        scrollbar.find('.ui-slider-handle').css({
                                width: handleSize,
                                'margin-left': -handleSize/2
                        });
                        handleHelper.width('').width( scrollbar.width() - handleSize);
                }
                
                //reset slider value based on scroll content position
                function resetValue(){
                        var remainder = scrollPane.width() - scrollContent.width();
                        var leftVal = scrollContent.css('margin-left') == 'auto' ? 0 : parseInt(scrollContent.css('margin-left'));
                        var percentage = Math.round(leftVal / remainder * 100);
                        scrollbar.slider("value", percentage);
                }
                //if the slider is 100% and window gets larger, reveal content
                function reflowContent(){
                                var showing = scrollContent.width() + parseInt( scrollContent.css('margin-left') );
                                var gap = scrollPane.width() - showing;
                                if(gap > 0){
                                        scrollContent.css('margin-left', parseInt( scrollContent.css('margin-left') ) + gap);
                                }
                }
                
                //change handle position on window resize
                $(window)
                .resize(function(){
                                resetValue();
                                sizeScrollbar();
                                reflowContent();
                });
                //init scrollbar size
                setTimeout(sizeScrollbar,10);//safari wants a timeout
        });
        </script>
</head>
<body>

<div class="demo">

<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
        <div class="scroll-content">
                <div class="scroll-content-item ui-widget-header">1</div>
                <div class="scroll-content-item ui-widget-header">2</div>
                <div class="scroll-content-item ui-widget-header">3</div>
                <div class="scroll-content-item ui-widget-header">4</div>
                <div class="scroll-content-item ui-widget-header">5</div>
                <div class="scroll-content-item ui-widget-header">6</div>
                <div class="scroll-content-item ui-widget-header">7</div>
                <div class="scroll-content-item ui-widget-header">8</div>
                <div class="scroll-content-item ui-widget-header">9</div>
                <div class="scroll-content-item ui-widget-header">10</div>
                <div class="scroll-content-item ui-widget-header">11</div>
                <div class="scroll-content-item ui-widget-header">12</div>
                <div class="scroll-content-item ui-widget-header">13</div>
                <div class="scroll-content-item ui-widget-header">14</div>
                <div class="scroll-content-item ui-widget-header">15</div>
                <div class="scroll-content-item ui-widget-header">16</div>
                <div class="scroll-content-item ui-widget-header">17</div>
                <div class="scroll-content-item ui-widget-header">18</div>
                <div class="scroll-content-item ui-widget-header">19</div>
                <div class="scroll-content-item ui-widget-header">20</div>
        </div>
        <div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
                <div class="scroll-bar"></div>
        </div>
</div>



</div><!-- End demo -->



<div class="demo-description">

<p>Use a slider to manipulate the positioning of content on the page. In this case, it acts as a scrollbar with the potential to capture values if needed.</p>

</div><!-- End demo-description -->

</body>
</html>