Mini Shell

(function($){$.fn.extend({slimScroll:function(options){var defaults={width:"auto",height:"250px",size:"7px",color:"#000",position:"right",distance:"1px",start:"top",opacity:.4,alwaysVisible:false,disableFadeOut:false,railVisible:false,railColor:"#333",railOpacity:.2,railDraggable:true,railClass:"slimScrollRail",barClass:"slimScrollBar",wrapperClass:"slimScrollDiv",allowPageScroll:false,wheelStep:20,touchScrollStep:200,borderRadius:"7px",railBorderRadius:"7px"};var o=$.extend(defaults,options);this.each(function(){var isOverPanel,isOverBar,isDragg,queueHide,touchDif,barHeight,percentScroll,lastScroll,divS="<div></div>",minBarHeight=30,releaseScroll=false;var me=$(this);if(me.parent().hasClass(o.wrapperClass)){var offset=me.scrollTop();bar=me.parent().find("."+o.barClass);rail=me.parent().find("."+o.railClass);getBarHeight();if($.isPlainObject(options)){if("height"in options&&options.height=="auto"){me.parent().css("height","auto");me.css("height","auto");var height=me.parent().parent().height();me.parent().css("height",height);me.css("height",height)}if("scrollTo"in options){offset=parseInt(o.scrollTo)}else if("scrollBy"in options){offset+=parseInt(o.scrollBy)}else if("destroy"in options){bar.remove();rail.remove();me.unwrap();return}scrollContent(offset,false,true)}return}else if($.isPlainObject(options)){if("destroy"in options){return}}o.height=o.height=="auto"?me.parent().height():o.height;var wrapper=$(divS).addClass(o.wrapperClass).css({position:"relative",overflow:"hidden",width:o.width,height:o.height});me.css({overflow:"hidden",width:o.width,height:o.height,"-ms-touch-action":"none"});var rail=$(divS).addClass(o.railClass).css({width:o.size,height:"100%",position:"absolute",top:0,display:o.alwaysVisible&&o.railVisible?"block":"none","border-radius":o.railBorderRadius,background:o.railColor,opacity:o.railOpacity,zIndex:90});var bar=$(divS).addClass(o.barClass).css({background:o.color,width:o.size,position:"absolute",top:0,opacity:o.opacity,display:o.alwaysVisible?"block":"none","border-radius":o.borderRadius,BorderRadius:o.borderRadius,MozBorderRadius:o.borderRadius,WebkitBorderRadius:o.borderRadius,zIndex:99});var posCss=o.position=="right"?{right:o.distance}:{left:o.distance};rail.css(posCss);bar.css(posCss);me.wrap(wrapper);me.parent().append(bar);me.parent().append(rail);if(o.railDraggable){bar.bind("mousedown",function(e){var $doc=$(document);isDragg=true;t=parseFloat(bar.css("top"));pageY=e.pageY;$doc.bind("mousemove.slimscroll",function(e){currTop=t+e.pageY-pageY;bar.css("top",currTop);scrollContent(0,bar.position().top,false)});$doc.bind("mouseup.slimscroll",function(e){isDragg=false;hideBar();$doc.unbind(".slimscroll")});return false}).bind("selectstart.slimscroll",function(e){e.stopPropagation();e.preventDefault();return false})}rail.hover(function(){showBar()},function(){hideBar()});bar.hover(function(){isOverBar=true},function(){isOverBar=false});me.hover(function(){isOverPanel=true;showBar();hideBar()},function(){isOverPanel=false;hideBar()});if(window.navigator.msPointerEnabled){me.bind("MSPointerDown",function(e,b){if(e.originalEvent.targetTouches.length){touchDif=e.originalEvent.targetTouches[0].pageY}});me.bind("MSPointerMove",function(e){e.originalEvent.preventDefault();if(e.originalEvent.targetTouches.length){var diff=(touchDif-e.originalEvent.targetTouches[0].pageY)/o.touchScrollStep;scrollContent(diff,true);touchDif=e.originalEvent.targetTouches[0].pageY}})}else{me.bind("touchstart",function(e,b){if(e.originalEvent.touches.length){touchDif=e.originalEvent.touches[0].pageY}});me.bind("touchmove",function(e){if(!releaseScroll){e.originalEvent.preventDefault()}if(e.originalEvent.touches.length){var diff=(touchDif-e.originalEvent.touches[0].pageY)/o.touchScrollStep;scrollContent(diff,true);touchDif=e.originalEvent.touches[0].pageY}})}getBarHeight();if(o.start==="bottom"){bar.css({top:me.outerHeight()-bar.outerHeight()});scrollContent(0,true)}else if(o.start!=="top"){scrollContent($(o.start).position().top,null,true);if(!o.alwaysVisible){bar.hide()}}attachWheel();function _onWheel(e){if(!isOverPanel){return}var e=e||window.event;var delta=0;if(e.wheelDelta){delta=-e.wheelDelta/120}if(e.detail){delta=e.detail/3}var target=e.target||e.srcTarget||e.srcElement;if($(target).closest("."+o.wrapperClass).is(me.parent())){scrollContent(delta,true)}if(e.preventDefault&&!releaseScroll){e.preventDefault()}if(!releaseScroll){e.returnValue=false}}function scrollContent(y,isWheel,isJump){releaseScroll=false;var delta=y;var maxTop=me.outerHeight()-bar.outerHeight();if(isWheel){delta=parseInt(bar.css("top"))+y*parseInt(o.wheelStep)/100*bar.outerHeight();delta=Math.min(Math.max(delta,0),maxTop);delta=y>0?Math.ceil(delta):Math.floor(delta);bar.css({top:delta+"px"})}percentScroll=parseInt(bar.css("top"))/(me.outerHeight()-bar.outerHeight());delta=percentScroll*(me[0].scrollHeight-me.outerHeight());if(isJump){delta=y;var offsetTop=delta/me[0].scrollHeight*me.outerHeight();offsetTop=Math.min(Math.max(offsetTop,0),maxTop);bar.css({top:offsetTop+"px"})}me.scrollTop(delta);me.trigger("slimscrolling",~~delta);showBar();hideBar()}function attachWheel(){if(window.addEventListener){this.addEventListener("DOMMouseScroll",_onWheel,false);this.addEventListener("mousewheel",_onWheel,false)}else{document.attachEvent("onmousewheel",_onWheel)}}function getBarHeight(){barHeight=Math.max(me.outerHeight()/me[0].scrollHeight*me.outerHeight(),minBarHeight);bar.css({height:barHeight+"px"});var display=barHeight==me.outerHeight()?"none":"block";bar.css({display:display})}function showBar(){getBarHeight();clearTimeout(queueHide);if(percentScroll==~~percentScroll){releaseScroll=o.allowPageScroll;if(lastScroll!=percentScroll){var msg=~~percentScroll==0?"top":"bottom";me.trigger("slimscroll",msg)}}else{releaseScroll=false}lastScroll=percentScroll;if(barHeight>=me.outerHeight()){releaseScroll=true;return}bar.stop(true,true).fadeIn("fast");if(o.railVisible){rail.stop(true,true).fadeIn("fast")}}function hideBar(){if(!o.alwaysVisible){queueHide=setTimeout(function(){if(!(o.disableFadeOut&&isOverPanel)&&!isOverBar&&!isDragg){bar.fadeOut("slow");rail.fadeOut("slow")}},1e3)}}});return this}});$.fn.extend({slimscroll:$.fn.slimScroll})})(jQuery);