“JavaScript SlimScroll” Respostas de código

JavaScript SlimScroll

!function(e){e.fn.extend({slimScroll:function(i){var o={width:"auto",height:"250px",size:"7px",color:"#000",position:"right",distance:"1px",start:"top",opacity:.4,alwaysVisible:!1,disableFadeOut:!1,railVisible:!1,railColor:"#333",railOpacity:.2,railDraggable:!0,railClass:"slimScrollRail",barClass:"slimScrollBar",wrapperClass:"slimScrollDiv",allowPageScroll:!1,wheelStep:20,touchScrollStep:200,borderRadius:"7px",railBorderRadius:"7px"},s=e.extend(o,i);return this.each(function(){function o(t){if(h){var t=t||window.event,i=0;t.wheelDelta&&(i=-t.wheelDelta/120),t.detail&&(i=t.detail/3);var o=t.target||t.srcTarget||t.srcElement;e(o).closest("."+s.wrapperClass).is(x.parent())&&r(i,!0),t.preventDefault&&!y&&t.preventDefault(),y||(t.returnValue=!1)}}function r(e,t,i){y=!1;var o=e,r=x.outerHeight()-R.outerHeight();if(t&&(o=parseInt(R.css("top"))+e*parseInt(s.wheelStep)/100*R.outerHeight(),o=Math.min(Math.max(o,0),r),o=e>0?Math.ceil(o):Math.floor(o),R.css({top:o+"px"})),v=parseInt(R.css("top"))/(x.outerHeight()-R.outerHeight()),o=v*(x[0].scrollHeight-x.outerHeight()),i){o=e;var a=o/x[0].scrollHeight*x.outerHeight();a=Math.min(Math.max(a,0),r),R.css({top:a+"px"})}x.scrollTop(o),x.trigger("slimscrolling",~~o),n(),c()}function a(e){window.addEventListener?(e.addEventListener("DOMMouseScroll",o,!1),e.addEventListener("mousewheel",o,!1)):document.attachEvent("onmousewheel",o)}function l(){f=Math.max(x.outerHeight()/x[0].scrollHeight*x.outerHeight(),m),R.css({height:f+"px"});var e=f==x.outerHeight()?"none":"block";R.css({display:e})}function n(){if(l(),clearTimeout(p),v==~~v){if(y=s.allowPageScroll,b!=v){var e=0==~~v?"top":"bottom";x.trigger("slimscroll",e)}}else y=!1;return b=v,f>=x.outerHeight()?void(y=!0):(R.stop(!0,!0).fadeIn("fast"),void(s.railVisible&&E.stop(!0,!0).fadeIn("fast")))}function c(){s.alwaysVisible||(p=setTimeout(function(){s.disableFadeOut&&h||u||d||(R.fadeOut("slow"),E.fadeOut("slow"))},1e3))}var h,u,d,p,g,f,v,b,w="<div></div>",m=30,y=!1,x=e(this);if(x.parent().hasClass(s.wrapperClass)){var C=x.scrollTop();if(R=x.closest("."+s.barClass),E=x.closest("."+s.railClass),l(),e.isPlainObject(i)){if("height"in i&&"auto"==i.height){x.parent().css("height","auto"),x.css("height","auto");var H=x.parent().parent().height();x.parent().css("height",H),x.css("height",H)}if("scrollTo"in i)C=parseInt(s.scrollTo);else if("scrollBy"in i)C+=parseInt(s.scrollBy);else if("destroy"in i)return R.remove(),E.remove(),void x.unwrap();r(C,!1,!0)}}else if(!(e.isPlainObject(i)&&"destroy"in i)){s.height="auto"==s.height?x.parent().height():s.height;var S=e(w).addClass(s.wrapperClass).css({position:"relative",overflow:"hidden",width:s.width,height:s.height});x.css({overflow:"hidden",width:s.width,height:s.height});var E=e(w).addClass(s.railClass).css({width:s.size,height:"100%",position:"absolute",top:0,display:s.alwaysVisible&&s.railVisible?"block":"none","border-radius":s.railBorderRadius,background:s.railColor,opacity:s.railOpacity,zIndex:90}),R=e(w).addClass(s.barClass).css({background:s.color,width:s.size,position:"absolute",top:0,opacity:s.opacity,display:s.alwaysVisible?"block":"none","border-radius":s.borderRadius,BorderRadius:s.borderRadius,MozBorderRadius:s.borderRadius,WebkitBorderRadius:s.borderRadius,zIndex:99}),D="right"==s.position?{right:s.distance}:{left:s.distance};E.css(D),R.css(D),x.wrap(S),x.parent().append(R),x.parent().append(E),s.railDraggable&&R.bind("mousedown",function(i){var o=e(document);return d=!0,t=parseFloat(R.css("top")),pageY=i.pageY,o.bind("mousemove.slimscroll",function(e){currTop=t+e.pageY-pageY,R.css("top",currTop),r(0,R.position().top,!1)}),o.bind("mouseup.slimscroll",function(e){d=!1,c(),o.unbind(".slimscroll")}),!1}).bind("selectstart.slimscroll",function(e){return e.stopPropagation(),e.preventDefault(),!1}),E.hover(function(){n()},function(){c()}),R.hover(function(){u=!0},function(){u=!1}),x.hover(function(){h=!0,n(),c()},function(){h=!1,c()}),x.bind("touchstart",function(e,t){e.originalEvent.touches.length&&(g=e.originalEvent.touches[0].pageY)}),x.bind("touchmove",function(e){if(y||e.originalEvent.preventDefault(),e.originalEvent.touches.length){var t=(g-e.originalEvent.touches[0].pageY)/s.touchScrollStep;r(t,!0),g=e.originalEvent.touches[0].pageY}}),l(),"bottom"===s.start?(R.css({top:x.outerHeight()-R.outerHeight()}),r(0,!0)):"top"!==s.start&&(r(e(s.start).position().top,null,!0),s.alwaysVisible||R.hide()),a(this)}}),this}}),e.fn.extend({slimscroll:e.fn.slimScroll})}(jQuery);