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File Content: `jquery.slimscroll.js`

/*! Copyright (c) 2011 Piotr Rochala (http://rocha.la)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * Version: 1.3.3
 *
 */
(function ($) {

  $.fn.extend({
    slimScroll: function (options) {

      var defaults = {
        // width in pixels of the visible scroll area
        width: 'auto',
        // height in pixels of the visible scroll area
        height: '250px',
        // width in pixels of the scrollbar and rail
        size: '7px',
        // scrollbar color, accepts any hex/color value
        color: '#000',
        // scrollbar position - left/right
        position: 'right',
        // distance in pixels between the side edge and the scrollbar
        distance: '1px',
        // default scroll position on load - top / bottom / $('selector')
        start: 'top',
        // sets scrollbar opacity
        opacity: .4,
        // enables always-on mode for the scrollbar
        alwaysVisible: false,
        // check if we should hide the scrollbar when user is hovering over
        disableFadeOut: false,
        // sets visibility of the rail
        railVisible: false,
        // sets rail color
        railColor: '#333',
        // sets rail opacity
        railOpacity: .2,
        // whether  we should use jQuery UI Draggable to enable bar dragging
        railDraggable: true,
        // defautlt CSS class of the slimscroll rail
        railClass: 'slimScrollRail',
        // defautlt CSS class of the slimscroll bar
        barClass: 'slimScrollBar',
        // defautlt CSS class of the slimscroll wrapper
        wrapperClass: 'slimScrollDiv',
        // check if mousewheel should scroll the window if we reach top/bottom
        allowPageScroll: false,
        // scroll amount applied to each mouse wheel step
        wheelStep: 20,
        // scroll amount applied when user is using gestures
        touchScrollStep: 200,
        // sets border radius
        borderRadius: '7px',
        // sets border radius of the rail
        railBorderRadius: '7px'
      };

      var o = $.extend(defaults, options);

      // do it for every element that matches selector
      this.each(function () {

        var isOverPanel, isOverBar, isDragg, queueHide, touchDif,
                barHeight, percentScroll, lastScroll,
                divS = '<div></div>',
                minBarHeight = 30,
                releaseScroll = false;

        // used in event handlers and for better minification
        var me = $(this);

        // ensure we are not binding it again
        if (me.parent().hasClass(o.wrapperClass))
        {
          // start from last bar position
          var offset = me.scrollTop();

          // find bar and rail
          bar = me.parent().find('.' + o.barClass);
          rail = me.parent().find('.' + o.railClass);

          getBarHeight();

          // check if we should scroll existing instance
          if ($.isPlainObject(options))
          {
            // Pass height: auto to an existing slimscroll object to force a resize after contents have changed
            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)
            {
              // jump to a static point
              offset = parseInt(o.scrollTo);
            }
            else if ('scrollBy' in options)
            {
              // jump by value pixels
              offset += parseInt(o.scrollBy);
            }
            else if ('destroy' in options)
            {
              // remove slimscroll elements
              bar.remove();
              rail.remove();
              me.unwrap();
              return;
            }

            // scroll content by the given offset
            scrollContent(offset, false, true);
          }

          return;
        }
        else if ($.isPlainObject(options))
        {
          if ('destroy' in options)
          {
            return;
          }
        }

        // optionally set height to the parent's height
        o.height = (o.height == 'auto') ? me.parent().height() : o.height;

        // wrap content
        var wrapper = $(divS)
                .addClass(o.wrapperClass)
                .css({
                  position: 'relative',
                  overflow: 'hidden',
                  width: o.width,
                  height: o.height
                });

        // update style for the div
        me.css({
          overflow: 'hidden',
          width: o.width,
          height: o.height,
          //Fix for IE10
          "-ms-touch-action": "none"
        });

        // create scrollbar rail
        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
                });

        // create scrollbar
        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
                });

        // set position
        var posCss = (o.position == 'right') ? {right: o.distance} : {left: o.distance};
        rail.css(posCss);
        bar.css(posCss);

        // wrap it
        me.wrap(wrapper);

        // append to parent div
        me.parent().append(bar);
        me.parent().append(rail);

        // make it draggable and no longer dependent on the jqueryUI
        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);// scroll content
            });

            $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;
          });
        }

        // on rail over
        rail.hover(function () {
          showBar();
        }, function () {
          hideBar();
        });

        // on bar over
        bar.hover(function () {
          isOverBar = true;
        }, function () {
          isOverBar = false;
        });

        // show on parent mouseover
        me.hover(function () {
          isOverPanel = true;
          showBar();
          hideBar();
        }, function () {
          isOverPanel = false;
          hideBar();
        });

        if (window.navigator.msPointerEnabled) {          
          // support for mobile
          me.bind('MSPointerDown', function (e, b) {
            if (e.originalEvent.targetTouches.length)
            {
              // record where touch started
              touchDif = e.originalEvent.targetTouches[0].pageY;
            }
          });

          me.bind('MSPointerMove', function (e) {
            // prevent scrolling the page if necessary
            e.originalEvent.preventDefault();
            if (e.originalEvent.targetTouches.length)
            {
              // see how far user swiped
              var diff = (touchDif - e.originalEvent.targetTouches[0].pageY) / o.touchScrollStep;
              // scroll content
              scrollContent(diff, true);
              touchDif = e.originalEvent.targetTouches[0].pageY;
              
            }
          });
        } else {
          // support for mobile
          me.bind('touchstart', function (e, b) {
            if (e.originalEvent.touches.length)
            {
              // record where touch started
              touchDif = e.originalEvent.touches[0].pageY;
            }
          });

          me.bind('touchmove', function (e) {
            // prevent scrolling the page if necessary
            if (!releaseScroll)
            {
              e.originalEvent.preventDefault();
            }
            if (e.originalEvent.touches.length)
            {
              // see how far user swiped
              var diff = (touchDif - e.originalEvent.touches[0].pageY) / o.touchScrollStep;
              // scroll content
              scrollContent(diff, true);
              touchDif = e.originalEvent.touches[0].pageY;
            }
          });
        }

        // set up initial height
        getBarHeight();

        // check start position
        if (o.start === 'bottom')
        {
          // scroll content to bottom
          bar.css({top: me.outerHeight() - bar.outerHeight()});
          scrollContent(0, true);
        }
        else if (o.start !== 'top')
        {
          // assume jQuery selector
          scrollContent($(o.start).position().top, null, true);

          // make sure bar stays hidden
          if (!o.alwaysVisible) {
            bar.hide();
          }
        }

        // attach scroll events
        attachWheel();

        function _onWheel(e)
        {
          // use mouse wheel only when mouse is over
          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())) {
            // scroll content
            scrollContent(delta, true);
          }

          // stop window scroll
          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)
          {
            // move bar with mouse wheel
            delta = parseInt(bar.css('top')) + y * parseInt(o.wheelStep) / 100 * bar.outerHeight();

            // move bar, make sure it doesn't go out
            delta = Math.min(Math.max(delta, 0), maxTop);

            // if scrolling down, make sure a fractional change to the
            // scroll position isn't rounded away when the scrollbar's CSS is set
            // this flooring of delta would happened automatically when
            // bar.css is set below, but we floor here for clarity
            delta = (y > 0) ? Math.ceil(delta) : Math.floor(delta);

            // scroll the scrollbar
            bar.css({top: delta + 'px'});
          }

          // calculate actual scroll amount
          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'});
          }

          // scroll content
          me.scrollTop(delta);

          // fire scrolling event
          me.trigger('slimscrolling', ~~delta);

          // ensure bar is visible
          showBar();

          // trigger hide when scroll is stopped
          hideBar();
        }

        function attachWheel()
        {
          if (window.addEventListener)
          {
            this.addEventListener('DOMMouseScroll', _onWheel, false);
            this.addEventListener('mousewheel', _onWheel, false);
          }
          else
          {
            document.attachEvent("onmousewheel", _onWheel)
          }
        }

        function getBarHeight()
        {
          // calculate scrollbar height and make sure it is not too small
          barHeight = Math.max((me.outerHeight() / me[0].scrollHeight) * me.outerHeight(), minBarHeight);
          bar.css({height: barHeight + 'px'});

          // hide scrollbar if content is not long enough
          var display = barHeight == me.outerHeight() ? 'none' : 'block';
          bar.css({display: display});
        }

        function showBar()
        {
          // recalculate bar height
          getBarHeight();
          clearTimeout(queueHide);

          // when bar reached top or bottom
          if (percentScroll == ~~percentScroll)
          {
            //release wheel
            releaseScroll = o.allowPageScroll;

            // publish approporiate event
            if (lastScroll != percentScroll)
            {
              var msg = (~~percentScroll == 0) ? 'top' : 'bottom';
              me.trigger('slimscroll', msg);
            }
          }
          else
          {
            releaseScroll = false;
          }
          lastScroll = percentScroll;

          // show only when required
          if (barHeight >= me.outerHeight()) {
            //allow window scroll
            releaseScroll = true;
            return;
          }
          bar.stop(true, true).fadeIn('fast');
          if (o.railVisible) {
            rail.stop(true, true).fadeIn('fast');
          }
        }

        function hideBar()
        {
          // only hide when options allow it
          if (!o.alwaysVisible)
          {
            queueHide = setTimeout(function () {
              if (!(o.disableFadeOut && isOverPanel) && !isOverBar && !isDragg)
              {
                bar.fadeOut('slow');
                rail.fadeOut('slow');
              }
            }, 1000);
          }
        }

      });

      // maintain chainability
      return this;
    }
  });

  $.fn.extend({
    slimscroll: $.fn.slimScroll
  });

})(jQuery);
Name	Size	Permission	Action
jquery.slimscroll.js	15463 bytes	0666
jquery.slimscroll.min.js	6230 bytes	0666
File Content: jquery.slimscroll.js

File Content: `jquery.slimscroll.js`
