perfect-scrollbar v0.6.10

https://github.com/noraesae/perfect-scrollbar

Version vom 04.07.2016. Aktuellste Version

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greatest.deepsurf.us/scripts/21144/134924/perfect-scrollbar%20v0610.js

/* perfect-scrollbar v0.6.10 */
(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
'use strict';

var ps = require('../main')
  , psInstances = require('../plugin/instances');

function mountJQuery(jQuery) {
  jQuery.fn.perfectScrollbar = function (settingOrCommand) {
    return this.each(function () {
      if (typeof settingOrCommand === 'object' ||
          typeof settingOrCommand === 'undefined') {
        // If it's an object or none, initialize.
        var settings = settingOrCommand;

        if (!psInstances.get(this)) {
          ps.initialize(this, settings);
        }
      } else {
        // Unless, it may be a command.
        var command = settingOrCommand;

        if (command === 'update') {
          ps.update(this);
        } else if (command === 'destroy') {
          ps.destroy(this);
        }
      }

      return jQuery(this);
    });
  };
}

if (typeof define === 'function' && define.amd) {
  // AMD. Register as an anonymous module.
  define(['jquery'], mountJQuery);
} else {
  var jq = window.jQuery ? window.jQuery : window.$;
  if (typeof jq !== 'undefined') {
    mountJQuery(jq);
  }
}

module.exports = mountJQuery;

},{"../main":7,"../plugin/instances":18}],2:[function(require,module,exports){
'use strict';

function oldAdd(element, className) {
  var classes = element.className.split(' ');
  if (classes.indexOf(className) < 0) {
    classes.push(className);
  }
  element.className = classes.join(' ');
}

function oldRemove(element, className) {
  var classes = element.className.split(' ');
  var idx = classes.indexOf(className);
  if (idx >= 0) {
    classes.splice(idx, 1);
  }
  element.className = classes.join(' ');
}

exports.add = function (element, className) {
  if (element.classList) {
    element.classList.add(className);
  } else {
    oldAdd(element, className);
  }
};

exports.remove = function (element, className) {
  if (element.classList) {
    element.classList.remove(className);
  } else {
    oldRemove(element, className);
  }
};

exports.list = function (element) {
  if (element.classList) {
    return Array.prototype.slice.apply(element.classList);
  } else {
    return element.className.split(' ');
  }
};

},{}],3:[function(require,module,exports){
'use strict';

var DOM = {};

DOM.e = function (tagName, className) {
  var element = document.createElement(tagName);
  element.className = className;
  return element;
};

DOM.appendTo = function (child, parent) {
  parent.appendChild(child);
  return child;
};

function cssGet(element, styleName) {
  return window.getComputedStyle(element)[styleName];
}

function cssSet(element, styleName, styleValue) {
  if (typeof styleValue === 'number') {
    styleValue = styleValue.toString() + 'px';
  }
  element.style[styleName] = styleValue;
  return element;
}

function cssMultiSet(element, obj) {
  for (var key in obj) {
    var val = obj[key];
    if (typeof val === 'number') {
      val = val.toString() + 'px';
    }
    element.style[key] = val;
  }
  return element;
}

DOM.css = function (element, styleNameOrObject, styleValue) {
  if (typeof styleNameOrObject === 'object') {
    // multiple set with object
    return cssMultiSet(element, styleNameOrObject);
  } else {
    if (typeof styleValue === 'undefined') {
      return cssGet(element, styleNameOrObject);
    } else {
      return cssSet(element, styleNameOrObject, styleValue);
    }
  }
};

DOM.matches = function (element, query) {
  if (typeof element.matches !== 'undefined') {
    return element.matches(query);
  } else {
    if (typeof element.matchesSelector !== 'undefined') {
      return element.matchesSelector(query);
    } else if (typeof element.webkitMatchesSelector !== 'undefined') {
      return element.webkitMatchesSelector(query);
    } else if (typeof element.mozMatchesSelector !== 'undefined') {
      return element.mozMatchesSelector(query);
    } else if (typeof element.msMatchesSelector !== 'undefined') {
      return element.msMatchesSelector(query);
    }
  }
};

DOM.remove = function (element) {
  if (typeof element.remove !== 'undefined') {
    element.remove();
  } else {
    if (element.parentNode) {
      element.parentNode.removeChild(element);
    }
  }
};

DOM.queryChildren = function (element, selector) {
  return Array.prototype.filter.call(element.childNodes, function (child) {
    return DOM.matches(child, selector);
  });
};

module.exports = DOM;

},{}],4:[function(require,module,exports){
'use strict';

var EventElement = function (element) {
  this.element = element;
  this.events = {};
};

EventElement.prototype.bind = function (eventName, handler) {
  if (typeof this.events[eventName] === 'undefined') {
    this.events[eventName] = [];
  }
  this.events[eventName].push(handler);
  this.element.addEventListener(eventName, handler, false);
};

EventElement.prototype.unbind = function (eventName, handler) {
  var isHandlerProvided = (typeof handler !== 'undefined');
  this.events[eventName] = this.events[eventName].filter(function (hdlr) {
    if (isHandlerProvided && hdlr !== handler) {
      return true;
    }
    this.element.removeEventListener(eventName, hdlr, false);
    return false;
  }, this);
};

EventElement.prototype.unbindAll = function () {
  for (var name in this.events) {
    this.unbind(name);
  }
};

var EventManager = function () {
  this.eventElements = [];
};

EventManager.prototype.eventElement = function (element) {
  var ee = this.eventElements.filter(function (eventElement) {
    return eventElement.element === element;
  })[0];
  if (typeof ee === 'undefined') {
    ee = new EventElement(element);
    this.eventElements.push(ee);
  }
  return ee;
};

EventManager.prototype.bind = function (element, eventName, handler) {
  this.eventElement(element).bind(eventName, handler);
};

EventManager.prototype.unbind = function (element, eventName, handler) {
  this.eventElement(element).unbind(eventName, handler);
};

EventManager.prototype.unbindAll = function () {
  for (var i = 0; i < this.eventElements.length; i++) {
    this.eventElements[i].unbindAll();
  }
};

EventManager.prototype.once = function (element, eventName, handler) {
  var ee = this.eventElement(element);
  var onceHandler = function (e) {
    ee.unbind(eventName, onceHandler);
    handler(e);
  };
  ee.bind(eventName, onceHandler);
};

module.exports = EventManager;

},{}],5:[function(require,module,exports){
'use strict';

module.exports = (function () {
  function s4() {
    return Math.floor((1 + Math.random()) * 0x10000)
               .toString(16)
               .substring(1);
  }
  return function () {
    return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
           s4() + '-' + s4() + s4() + s4();
  };
})();

},{}],6:[function(require,module,exports){
'use strict';

var cls = require('./class')
  , d = require('./dom');

exports.toInt = function (x) {
  return parseInt(x, 10) || 0;
};

exports.clone = function (obj) {
  if (obj === null) {
    return null;
  } else if (typeof obj === 'object') {
    var result = {};
    for (var key in obj) {
      result[key] = this.clone(obj[key]);
    }
    return result;
  } else {
    return obj;
  }
};

exports.extend = function (original, source) {
  var result = this.clone(original);
  for (var key in source) {
    result[key] = this.clone(source[key]);
  }
  return result;
};

exports.isEditable = function (el) {
  return d.matches(el, "input,[contenteditable]") ||
         d.matches(el, "select,[contenteditable]") ||
         d.matches(el, "textarea,[contenteditable]") ||
         d.matches(el, "button,[contenteditable]");
};

exports.removePsClasses = function (element) {
  var clsList = cls.list(element);
  for (var i = 0; i < clsList.length; i++) {
    var className = clsList[i];
    if (className.indexOf('ps-') === 0) {
      cls.remove(element, className);
    }
  }
};

exports.outerWidth = function (element) {
  return this.toInt(d.css(element, 'width')) +
         this.toInt(d.css(element, 'paddingLeft')) +
         this.toInt(d.css(element, 'paddingRight')) +
         this.toInt(d.css(element, 'borderLeftWidth')) +
         this.toInt(d.css(element, 'borderRightWidth'));
};

exports.startScrolling = function (element, axis) {
  cls.add(element, 'ps-in-scrolling');
  if (typeof axis !== 'undefined') {
    cls.add(element, 'ps-' + axis);
  } else {
    cls.add(element, 'ps-x');
    cls.add(element, 'ps-y');
  }
};

exports.stopScrolling = function (element, axis) {
  cls.remove(element, 'ps-in-scrolling');
  if (typeof axis !== 'undefined') {
    cls.remove(element, 'ps-' + axis);
  } else {
    cls.remove(element, 'ps-x');
    cls.remove(element, 'ps-y');
  }
};

exports.env = {
  isWebKit: 'WebkitAppearance' in document.documentElement.style,
  supportsTouch: (('ontouchstart' in window) || window.DocumentTouch && document instanceof window.DocumentTouch),
  supportsIePointer: window.navigator.msMaxTouchPoints !== null
};

},{"./class":2,"./dom":3}],7:[function(require,module,exports){
'use strict';

var destroy = require('./plugin/destroy')
  , initialize = require('./plugin/initialize')
  , update = require('./plugin/update');

module.exports = {
  initialize: initialize,
  update: update,
  destroy: destroy
};

},{"./plugin/destroy":9,"./plugin/initialize":17,"./plugin/update":21}],8:[function(require,module,exports){
'use strict';

module.exports = {
  maxScrollbarLength: null,
  minScrollbarLength: null,
  scrollXMarginOffset: 0,
  scrollYMarginOffset: 0,
  stopPropagationOnClick: true,
  suppressScrollX: false,
  suppressScrollY: false,
  swipePropagation: true,
  useBothWheelAxes: false,
  useKeyboard: true,
  useSelectionScroll: false,
  wheelPropagation: false,
  wheelSpeed: 1,
  theme: 'default'
};

},{}],9:[function(require,module,exports){
'use strict';

var d = require('../lib/dom')
  , h = require('../lib/helper')
  , instances = require('./instances');

module.exports = function (element) {
  var i = instances.get(element);

  if (!i) {
    return;
  }

  i.event.unbindAll();
  d.remove(i.scrollbarX);
  d.remove(i.scrollbarY);
  d.remove(i.scrollbarXRail);
  d.remove(i.scrollbarYRail);
  h.removePsClasses(element);

  instances.remove(element);
};

},{"../lib/dom":3,"../lib/helper":6,"./instances":18}],10:[function(require,module,exports){
'use strict';

var h = require('../../lib/helper')
  , instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindClickRailHandler(element, i) {
  function pageOffset(el) {
    return el.getBoundingClientRect();
  }
  var stopPropagation = window.Event.prototype.stopPropagation.bind;

  if (i.settings.stopPropagationOnClick) {
    i.event.bind(i.scrollbarY, 'click', stopPropagation);
  }
  i.event.bind(i.scrollbarYRail, 'click', function (e) {
    var halfOfScrollbarLength = h.toInt(i.scrollbarYHeight / 2);
    var positionTop = i.railYRatio * (e.pageY - window.pageYOffset - pageOffset(i.scrollbarYRail).top - halfOfScrollbarLength);
    var maxPositionTop = i.railYRatio * (i.railYHeight - i.scrollbarYHeight);
    var positionRatio = positionTop / maxPositionTop;

    if (positionRatio < 0) {
      positionRatio = 0;
    } else if (positionRatio > 1) {
      positionRatio = 1;
    }

    updateScroll(element, 'top', (i.contentHeight - i.containerHeight) * positionRatio);
    updateGeometry(element);

    e.stopPropagation();
  });

  if (i.settings.stopPropagationOnClick) {
    i.event.bind(i.scrollbarX, 'click', stopPropagation);
  }
  i.event.bind(i.scrollbarXRail, 'click', function (e) {
    var halfOfScrollbarLength = h.toInt(i.scrollbarXWidth / 2);
    var positionLeft = i.railXRatio * (e.pageX - window.pageXOffset - pageOffset(i.scrollbarXRail).left - halfOfScrollbarLength);
    var maxPositionLeft = i.railXRatio * (i.railXWidth - i.scrollbarXWidth);
    var positionRatio = positionLeft / maxPositionLeft;

    if (positionRatio < 0) {
      positionRatio = 0;
    } else if (positionRatio > 1) {
      positionRatio = 1;
    }

    updateScroll(element, 'left', ((i.contentWidth - i.containerWidth) * positionRatio) - i.negativeScrollAdjustment);
    updateGeometry(element);

    e.stopPropagation();
  });
}

module.exports = function (element) {
  var i = instances.get(element);
  bindClickRailHandler(element, i);
};

},{"../../lib/helper":6,"../instances":18,"../update-geometry":19,"../update-scroll":20}],11:[function(require,module,exports){
'use strict';

var d = require('../../lib/dom')
  , h = require('../../lib/helper')
  , instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindMouseScrollXHandler(element, i) {
  var currentLeft = null;
  var currentPageX = null;

  function updateScrollLeft(deltaX) {
    var newLeft = currentLeft + (deltaX * i.railXRatio);
    var maxLeft = Math.max(0, i.scrollbarXRail.getBoundingClientRect().left) + (i.railXRatio * (i.railXWidth - i.scrollbarXWidth));

    if (newLeft < 0) {
      i.scrollbarXLeft = 0;
    } else if (newLeft > maxLeft) {
      i.scrollbarXLeft = maxLeft;
    } else {
      i.scrollbarXLeft = newLeft;
    }

    var scrollLeft = h.toInt(i.scrollbarXLeft * (i.contentWidth - i.containerWidth) / (i.containerWidth - (i.railXRatio * i.scrollbarXWidth))) - i.negativeScrollAdjustment;
    updateScroll(element, 'left', scrollLeft);
  }

  var mouseMoveHandler = function (e) {
    updateScrollLeft(e.pageX - currentPageX);
    updateGeometry(element);
    e.stopPropagation();
    e.preventDefault();
  };

  var mouseUpHandler = function () {
    h.stopScrolling(element, 'x');
    i.event.unbind(i.ownerDocument, 'mousemove', mouseMoveHandler);
  };

  i.event.bind(i.scrollbarX, 'mousedown', function (e) {
    currentPageX = e.pageX;
    currentLeft = h.toInt(d.css(i.scrollbarX, 'left')) * i.railXRatio;
    h.startScrolling(element, 'x');

    i.event.bind(i.ownerDocument, 'mousemove', mouseMoveHandler);
    i.event.once(i.ownerDocument, 'mouseup', mouseUpHandler);

    e.stopPropagation();
    e.preventDefault();
  });
}

function bindMouseScrollYHandler(element, i) {
  var currentTop = null;
  var currentPageY = null;

  function updateScrollTop(deltaY) {
    var newTop = currentTop + (deltaY * i.railYRatio);
    var maxTop = Math.max(0, i.scrollbarYRail.getBoundingClientRect().top) + (i.railYRatio * (i.railYHeight - i.scrollbarYHeight));

    if (newTop < 0) {
      i.scrollbarYTop = 0;
    } else if (newTop > maxTop) {
      i.scrollbarYTop = maxTop;
    } else {
      i.scrollbarYTop = newTop;
    }

    var scrollTop = h.toInt(i.scrollbarYTop * (i.contentHeight - i.containerHeight) / (i.containerHeight - (i.railYRatio * i.scrollbarYHeight)));
    updateScroll(element, 'top', scrollTop);
  }

  var mouseMoveHandler = function (e) {
    updateScrollTop(e.pageY - currentPageY);
    updateGeometry(element);
    e.stopPropagation();
    e.preventDefault();
  };

  var mouseUpHandler = function () {
    h.stopScrolling(element, 'y');
    i.event.unbind(i.ownerDocument, 'mousemove', mouseMoveHandler);
  };

  i.event.bind(i.scrollbarY, 'mousedown', function (e) {
    currentPageY = e.pageY;
    currentTop = h.toInt(d.css(i.scrollbarY, 'top')) * i.railYRatio;
    h.startScrolling(element, 'y');

    i.event.bind(i.ownerDocument, 'mousemove', mouseMoveHandler);
    i.event.once(i.ownerDocument, 'mouseup', mouseUpHandler);

    e.stopPropagation();
    e.preventDefault();
  });
}

module.exports = function (element) {
  var i = instances.get(element);
  bindMouseScrollXHandler(element, i);
  bindMouseScrollYHandler(element, i);
};

},{"../../lib/dom":3,"../../lib/helper":6,"../instances":18,"../update-geometry":19,"../update-scroll":20}],12:[function(require,module,exports){
'use strict';

var h = require('../../lib/helper')
  , d = require('../../lib/dom')
  , instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindKeyboardHandler(element, i) {
  var hovered = false;
  i.event.bind(element, 'mouseenter', function () {
    hovered = true;
  });
  i.event.bind(element, 'mouseleave', function () {
    hovered = false;
  });

  var shouldPrevent = false;
  function shouldPreventDefault(deltaX, deltaY) {
    var scrollTop = element.scrollTop;
    if (deltaX === 0) {
      if (!i.scrollbarYActive) {
        return false;
      }
      if ((scrollTop === 0 && deltaY > 0) || (scrollTop >= i.contentHeight - i.containerHeight && deltaY < 0)) {
        return !i.settings.wheelPropagation;
      }
    }

    var scrollLeft = element.scrollLeft;
    if (deltaY === 0) {
      if (!i.scrollbarXActive) {
        return false;
      }
      if ((scrollLeft === 0 && deltaX < 0) || (scrollLeft >= i.contentWidth - i.containerWidth && deltaX > 0)) {
        return !i.settings.wheelPropagation;
      }
    }
    return true;
  }

  i.event.bind(i.ownerDocument, 'keydown', function (e) {
    if (e.isDefaultPrevented && e.isDefaultPrevented()) {
      return;
    }

    var focused = d.matches(i.scrollbarX, ':focus') ||
                  d.matches(i.scrollbarY, ':focus');

    if (!hovered && !focused) {
      return;
    }

    var activeElement = document.activeElement ? document.activeElement : i.ownerDocument.activeElement;
    if (activeElement) {
      // go deeper if element is a webcomponent
      while (activeElement.shadowRoot) {
        activeElement = activeElement.shadowRoot.activeElement;
      }
      if (h.isEditable(activeElement)) {
        return;
      }
    }

    var deltaX = 0;
    var deltaY = 0;

    switch (e.which) {
    case 37: // left
      deltaX = -30;
      break;
    case 38: // up
      deltaY = 30;
      break;
    case 39: // right
      deltaX = 30;
      break;
    case 40: // down
      deltaY = -30;
      break;
    case 33: // page up
      deltaY = 90;
      break;
    case 32: // space bar
      if (e.shiftKey) {
        deltaY = 90;
      } else {
        deltaY = -90;
      }
      break;
    case 34: // page down
      deltaY = -90;
      break;
    case 35: // end
      if (e.ctrlKey) {
        deltaY = -i.contentHeight;
      } else {
        deltaY = -i.containerHeight;
      }
      break;
    case 36: // home
      if (e.ctrlKey) {
        deltaY = element.scrollTop;
      } else {
        deltaY = i.containerHeight;
      }
      break;
    default:
      return;
    }

    updateScroll(element, 'top', element.scrollTop - deltaY);
    updateScroll(element, 'left', element.scrollLeft + deltaX);
    updateGeometry(element);

    shouldPrevent = shouldPreventDefault(deltaX, deltaY);
    if (shouldPrevent) {
      e.preventDefault();
    }
  });
}

module.exports = function (element) {
  var i = instances.get(element);
  bindKeyboardHandler(element, i);
};

},{"../../lib/dom":3,"../../lib/helper":6,"../instances":18,"../update-geometry":19,"../update-scroll":20}],13:[function(require,module,exports){
'use strict';

var instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindMouseWheelHandler(element, i) {
  var shouldPrevent = false;

  function shouldPreventDefault(deltaX, deltaY) {
    var scrollTop = element.scrollTop;
    if (deltaX === 0) {
      if (!i.scrollbarYActive) {
        return false;
      }
      if ((scrollTop === 0 && deltaY > 0) || (scrollTop >= i.contentHeight - i.containerHeight && deltaY < 0)) {
        return !i.settings.wheelPropagation;
      }
    }

    var scrollLeft = element.scrollLeft;
    if (deltaY === 0) {
      if (!i.scrollbarXActive) {
        return false;
      }
      if ((scrollLeft === 0 && deltaX < 0) || (scrollLeft >= i.contentWidth - i.containerWidth && deltaX > 0)) {
        return !i.settings.wheelPropagation;
      }
    }
    return true;
  }

  function getDeltaFromEvent(e) {
    var deltaX = e.deltaX;
    var deltaY = -1 * e.deltaY;

    if (typeof deltaX === "undefined" || typeof deltaY === "undefined") {
      // OS X Safari
      deltaX = -1 * e.wheelDeltaX / 6;
      deltaY = e.wheelDeltaY / 6;
    }

    if (e.deltaMode && e.deltaMode === 1) {
      // Firefox in deltaMode 1: Line scrolling
      deltaX *= 10;
      deltaY *= 10;
    }

    if (deltaX !== deltaX && deltaY !== deltaY/* NaN checks */) {
      // IE in some mouse drivers
      deltaX = 0;
      deltaY = e.wheelDelta;
    }

    return [deltaX, deltaY];
  }

  function shouldBeConsumedByTextarea(deltaX, deltaY) {
    var hoveredTextarea = element.querySelector('textarea:hover');
    if (hoveredTextarea) {
      var maxScrollTop = hoveredTextarea.scrollHeight - hoveredTextarea.clientHeight;
      if (maxScrollTop > 0) {
        if (!(hoveredTextarea.scrollTop === 0 && deltaY > 0) &&
            !(hoveredTextarea.scrollTop === maxScrollTop && deltaY < 0)) {
          return true;
        }
      }
      var maxScrollLeft = hoveredTextarea.scrollLeft - hoveredTextarea.clientWidth;
      if (maxScrollLeft > 0) {
        if (!(hoveredTextarea.scrollLeft === 0 && deltaX < 0) &&
            !(hoveredTextarea.scrollLeft === maxScrollLeft && deltaX > 0)) {
          return true;
        }
      }
    }
    return false;
  }

  function mousewheelHandler(e) {
    var delta = getDeltaFromEvent(e);

    var deltaX = delta[0];
    var deltaY = delta[1];

    if (shouldBeConsumedByTextarea(deltaX, deltaY)) {
      return;
    }

    shouldPrevent = false;
    if (!i.settings.useBothWheelAxes) {
      // deltaX will only be used for horizontal scrolling and deltaY will
      // only be used for vertical scrolling - this is the default
      updateScroll(element, 'top', element.scrollTop - (deltaY * i.settings.wheelSpeed));
      updateScroll(element, 'left', element.scrollLeft + (deltaX * i.settings.wheelSpeed));
    } else if (i.scrollbarYActive && !i.scrollbarXActive) {
      // only vertical scrollbar is active and useBothWheelAxes option is
      // active, so let's scroll vertical bar using both mouse wheel axes
      if (deltaY) {
        updateScroll(element, 'top', element.scrollTop - (deltaY * i.settings.wheelSpeed));
      } else {
        updateScroll(element, 'top', element.scrollTop + (deltaX * i.settings.wheelSpeed));
      }
      shouldPrevent = true;
    } else if (i.scrollbarXActive && !i.scrollbarYActive) {
      // useBothWheelAxes and only horizontal bar is active, so use both
      // wheel axes for horizontal bar
      if (deltaX) {
        updateScroll(element, 'left', element.scrollLeft + (deltaX * i.settings.wheelSpeed));
      } else {
        updateScroll(element, 'left', element.scrollLeft - (deltaY * i.settings.wheelSpeed));
      }
      shouldPrevent = true;
    }

    updateGeometry(element);

    shouldPrevent = (shouldPrevent || shouldPreventDefault(deltaX, deltaY));
    if (shouldPrevent) {
      e.stopPropagation();
      e.preventDefault();
    }
  }

  if (typeof window.onwheel !== "undefined") {
    i.event.bind(element, 'wheel', mousewheelHandler);
  } else if (typeof window.onmousewheel !== "undefined") {
    i.event.bind(element, 'mousewheel', mousewheelHandler);
  }
}

module.exports = function (element) {
  var i = instances.get(element);
  bindMouseWheelHandler(element, i);
};

},{"../instances":18,"../update-geometry":19,"../update-scroll":20}],14:[function(require,module,exports){
'use strict';

var instances = require('../instances')
  , updateGeometry = require('../update-geometry');

function bindNativeScrollHandler(element, i) {
  i.event.bind(element, 'scroll', function () {
    updateGeometry(element);
  });
}

module.exports = function (element) {
  var i = instances.get(element);
  bindNativeScrollHandler(element, i);
};

},{"../instances":18,"../update-geometry":19}],15:[function(require,module,exports){
'use strict';

var h = require('../../lib/helper')
  , instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindSelectionHandler(element, i) {
  function getRangeNode() {
    var selection = window.getSelection ? window.getSelection() :
                    document.getSelection ? document.getSelection() : '';
    if (selection.toString().length === 0) {
      return null;
    } else {
      return selection.getRangeAt(0).commonAncestorContainer;
    }
  }

  var scrollingLoop = null;
  var scrollDiff = {top: 0, left: 0};
  function startScrolling() {
    if (!scrollingLoop) {
      scrollingLoop = setInterval(function () {
        if (!instances.get(element)) {
          clearInterval(scrollingLoop);
          return;
        }

        updateScroll(element, 'top', element.scrollTop + scrollDiff.top);
        updateScroll(element, 'left', element.scrollLeft + scrollDiff.left);
        updateGeometry(element);
      }, 50); // every .1 sec
    }
  }
  function stopScrolling() {
    if (scrollingLoop) {
      clearInterval(scrollingLoop);
      scrollingLoop = null;
    }
    h.stopScrolling(element);
  }

  var isSelected = false;
  i.event.bind(i.ownerDocument, 'selectionchange', function () {
    if (element.contains(getRangeNode())) {
      isSelected = true;
    } else {
      isSelected = false;
      stopScrolling();
    }
  });
  i.event.bind(window, 'mouseup', function () {
    if (isSelected) {
      isSelected = false;
      stopScrolling();
    }
  });

  i.event.bind(window, 'mousemove', function (e) {
    if (isSelected) {
      var mousePosition = {x: e.pageX, y: e.pageY};
      var containerGeometry = {
        left: element.offsetLeft,
        right: element.offsetLeft + element.offsetWidth,
        top: element.offsetTop,
        bottom: element.offsetTop + element.offsetHeight
      };

      if (mousePosition.x < containerGeometry.left + 3) {
        scrollDiff.left = -5;
        h.startScrolling(element, 'x');
      } else if (mousePosition.x > containerGeometry.right - 3) {
        scrollDiff.left = 5;
        h.startScrolling(element, 'x');
      } else {
        scrollDiff.left = 0;
      }

      if (mousePosition.y < containerGeometry.top + 3) {
        if (containerGeometry.top + 3 - mousePosition.y < 5) {
          scrollDiff.top = -5;
        } else {
          scrollDiff.top = -20;
        }
        h.startScrolling(element, 'y');
      } else if (mousePosition.y > containerGeometry.bottom - 3) {
        if (mousePosition.y - containerGeometry.bottom + 3 < 5) {
          scrollDiff.top = 5;
        } else {
          scrollDiff.top = 20;
        }
        h.startScrolling(element, 'y');
      } else {
        scrollDiff.top = 0;
      }

      if (scrollDiff.top === 0 && scrollDiff.left === 0) {
        stopScrolling();
      } else {
        startScrolling();
      }
    }
  });
}

module.exports = function (element) {
  var i = instances.get(element);
  bindSelectionHandler(element, i);
};

},{"../../lib/helper":6,"../instances":18,"../update-geometry":19,"../update-scroll":20}],16:[function(require,module,exports){
'use strict';

var instances = require('../instances')
  , updateGeometry = require('../update-geometry')
  , updateScroll = require('../update-scroll');

function bindTouchHandler(element, i, supportsTouch, supportsIePointer) {
  function shouldPreventDefault(deltaX, deltaY) {
    var scrollTop = element.scrollTop;
    var scrollLeft = element.scrollLeft;
    var magnitudeX = Math.abs(deltaX);
    var magnitudeY = Math.abs(deltaY);

    if (magnitudeY > magnitudeX) {
      // user is perhaps trying to swipe up/down the page

      if (((deltaY < 0) && (scrollTop === i.contentHeight - i.containerHeight)) ||
          ((deltaY > 0) && (scrollTop === 0))) {
        return !i.settings.swipePropagation;
      }
    } else if (magnitudeX > magnitudeY) {
      // user is perhaps trying to swipe left/right across the page

      if (((deltaX < 0) && (scrollLeft === i.contentWidth - i.containerWidth)) ||
          ((deltaX > 0) && (scrollLeft === 0))) {
        return !i.settings.swipePropagation;
      }
    }

    return true;
  }

  function applyTouchMove(differenceX, differenceY) {
    updateScroll(element, 'top', element.scrollTop - differenceY);
    updateScroll(element, 'left', element.scrollLeft - differenceX);

    updateGeometry(element);
  }

  var startOffset = {};
  var startTime = 0;
  var speed = {};
  var easingLoop = null;
  var inGlobalTouch = false;
  var inLocalTouch = false;

  function globalTouchStart() {
    inGlobalTouch = true;
  }
  function globalTouchEnd() {
    inGlobalTouch = false;
  }

  function getTouch(e) {
    if (e.targetTouches) {
      return e.targetTouches[0];
    } else {
      // Maybe IE pointer
      return e;
    }
  }
  function shouldHandle(e) {
    if (e.targetTouches && e.targetTouches.length === 1) {
      return true;
    }
    if (e.pointerType && e.pointerType !== 'mouse' && e.pointerType !== e.MSPOINTER_TYPE_MOUSE) {
      return true;
    }
    return false;
  }
  function touchStart(e) {
    if (shouldHandle(e)) {
      inLocalTouch = true;

      var touch = getTouch(e);

      startOffset.pageX = touch.pageX;
      startOffset.pageY = touch.pageY;

      startTime = (new Date()).getTime();

      if (easingLoop !== null) {
        clearInterval(easingLoop);
      }

      e.stopPropagation();
    }
  }
  function touchMove(e) {
    if (!inGlobalTouch && inLocalTouch && shouldHandle(e)) {
      var touch = getTouch(e);

      var currentOffset = {pageX: touch.pageX, pageY: touch.pageY};

      var differenceX = currentOffset.pageX - startOffset.pageX;
      var differenceY = currentOffset.pageY - startOffset.pageY;

      applyTouchMove(differenceX, differenceY);
      startOffset = currentOffset;

      var currentTime = (new Date()).getTime();

      var timeGap = currentTime - startTime;
      if (timeGap > 0) {
        speed.x = differenceX / timeGap;
        speed.y = differenceY / timeGap;
        startTime = currentTime;
      }

      if (shouldPreventDefault(differenceX, differenceY)) {
        e.stopPropagation();
        e.preventDefault();
      }
    }
  }
  function touchEnd() {
    if (!inGlobalTouch && inLocalTouch) {
      inLocalTouch = false;

      clearInterval(easingLoop);
      easingLoop = setInterval(function () {
        if (!instances.get(element)) {
          clearInterval(easingLoop);
          return;
        }

        if (Math.abs(speed.x) < 0.01 && Math.abs(speed.y) < 0.01) {
          clearInterval(easingLoop);
          return;
        }

        applyTouchMove(speed.x * 30, speed.y * 30);

        speed.x *= 0.8;
        speed.y *= 0.8;
      }, 10);
    }
  }

  if (supportsTouch) {
    i.event.bind(window, 'touchstart', globalTouchStart);
    i.event.bind(window, 'touchend', globalTouchEnd);
    i.event.bind(element, 'touchstart', touchStart);
    i.event.bind(element, 'touchmove', touchMove);
    i.event.bind(element, 'touchend', touchEnd);
  }

  if (supportsIePointer) {
    if (window.PointerEvent) {
      i.event.bind(window, 'pointerdown', globalTouchStart);
      i.event.bind(window, 'pointerup', globalTouchEnd);
      i.event.bind(element, 'pointerdown', touchStart);
      i.event.bind(element, 'pointermove', touchMove);
      i.event.bind(element, 'pointerup', touchEnd);
    } else if (window.MSPointerEvent) {
      i.event.bind(window, 'MSPointerDown', globalTouchStart);
      i.event.bind(window, 'MSPointerUp', globalTouchEnd);
      i.event.bind(element, 'MSPointerDown', touchStart);
      i.event.bind(element, 'MSPointerMove', touchMove);
      i.event.bind(element, 'MSPointerUp', touchEnd);
    }
  }
}

module.exports = function (element, supportsTouch, supportsIePointer) {
  var i = instances.get(element);
  bindTouchHandler(element, i, supportsTouch, supportsIePointer);
};

},{"../instances":18,"../update-geometry":19,"../update-scroll":20}],17:[function(require,module,exports){
'use strict';

var cls = require('../lib/class')
  , h = require('../lib/helper')
  , instances = require('./instances')
  , updateGeometry = require('./update-geometry');

// Handlers
var clickRailHandler = require('./handler/click-rail')
  , dragScrollbarHandler = require('./handler/drag-scrollbar')
  , keyboardHandler = require('./handler/keyboard')
  , mouseWheelHandler = require('./handler/mouse-wheel')
  , nativeScrollHandler = require('./handler/native-scroll')
  , selectionHandler = require('./handler/selection')
  , touchHandler = require('./handler/touch');

module.exports = function (element, userSettings) {
  userSettings = typeof userSettings === 'object' ? userSettings : {};

  cls.add(element, 'ps-container');

  // Create a plugin instance.
  var i = instances.add(element);

  i.settings = h.extend(i.settings, userSettings);
  cls.add(element, 'ps-theme-' + i.settings.theme);

  clickRailHandler(element);
  dragScrollbarHandler(element);
  mouseWheelHandler(element);
  nativeScrollHandler(element);

  if (i.settings.useSelectionScroll) {
    selectionHandler(element);
  }

  if (h.env.supportsTouch || h.env.supportsIePointer) {
    touchHandler(element, h.env.supportsTouch, h.env.supportsIePointer);
  }
  if (i.settings.useKeyboard) {
    keyboardHandler(element);
  }

  updateGeometry(element);
};

},{"../lib/class":2,"../lib/helper":6,"./handler/click-rail":10,"./handler/drag-scrollbar":11,"./handler/keyboard":12,"./handler/mouse-wheel":13,"./handler/native-scroll":14,"./handler/selection":15,"./handler/touch":16,"./instances":18,"./update-geometry":19}],18:[function(require,module,exports){
'use strict';

var cls = require('../lib/class')
  , d = require('../lib/dom')
  , defaultSettings = require('./default-setting')
  , EventManager = require('../lib/event-manager')
  , guid = require('../lib/guid')
  , h = require('../lib/helper');

var instances = {};

function Instance(element) {
  var i = this;

  i.settings = h.clone(defaultSettings);
  i.containerWidth = null;
  i.containerHeight = null;
  i.contentWidth = null;
  i.contentHeight = null;

  i.isRtl = d.css(element, 'direction') === "rtl";
  i.isNegativeScroll = (function () {
    var originalScrollLeft = element.scrollLeft;
    var result = null;
    element.scrollLeft = -1;
    result = element.scrollLeft < 0;
    element.scrollLeft = originalScrollLeft;
    return result;
  })();
  i.negativeScrollAdjustment = i.isNegativeScroll ? element.scrollWidth - element.clientWidth : 0;
  i.event = new EventManager();
  i.ownerDocument = element.ownerDocument || document;

  function focus() {
    cls.add(element, 'ps-focus');
  }

  function blur() {
    cls.remove(element, 'ps-focus');
  }

  i.scrollbarXRail = d.appendTo(d.e('div', 'ps-scrollbar-x-rail'), element);
  i.scrollbarX = d.appendTo(d.e('div', 'ps-scrollbar-x'), i.scrollbarXRail);
  i.scrollbarX.setAttribute('tabindex', 0);
  i.event.bind(i.scrollbarX, 'focus', focus);
  i.event.bind(i.scrollbarX, 'blur', blur);
  i.scrollbarXActive = null;
  i.scrollbarXWidth = null;
  i.scrollbarXLeft = null;
  i.scrollbarXBottom = h.toInt(d.css(i.scrollbarXRail, 'bottom'));
  i.isScrollbarXUsingBottom = i.scrollbarXBottom === i.scrollbarXBottom; // !isNaN
  i.scrollbarXTop = i.isScrollbarXUsingBottom ? null : h.toInt(d.css(i.scrollbarXRail, 'top'));
  i.railBorderXWidth = h.toInt(d.css(i.scrollbarXRail, 'borderLeftWidth')) + h.toInt(d.css(i.scrollbarXRail, 'borderRightWidth'));
  // Set rail to display:block to calculate margins
  d.css(i.scrollbarXRail, 'display', 'block');
  i.railXMarginWidth = h.toInt(d.css(i.scrollbarXRail, 'marginLeft')) + h.toInt(d.css(i.scrollbarXRail, 'marginRight'));
  d.css(i.scrollbarXRail, 'display', '');
  i.railXWidth = null;
  i.railXRatio = null;

  i.scrollbarYRail = d.appendTo(d.e('div', 'ps-scrollbar-y-rail'), element);
  i.scrollbarY = d.appendTo(d.e('div', 'ps-scrollbar-y'), i.scrollbarYRail);
  i.scrollbarY.setAttribute('tabindex', 0);
  i.event.bind(i.scrollbarY, 'focus', focus);
  i.event.bind(i.scrollbarY, 'blur', blur);
  i.scrollbarYActive = null;
  i.scrollbarYHeight = null;
  i.scrollbarYTop = null;
  i.scrollbarYRight = h.toInt(d.css(i.scrollbarYRail, 'right'));
  i.isScrollbarYUsingRight = i.scrollbarYRight === i.scrollbarYRight; // !isNaN
  i.scrollbarYLeft = i.isScrollbarYUsingRight ? null : h.toInt(d.css(i.scrollbarYRail, 'left'));
  i.scrollbarYOuterWidth = i.isRtl ? h.outerWidth(i.scrollbarY) : null;
  i.railBorderYWidth = h.toInt(d.css(i.scrollbarYRail, 'borderTopWidth')) + h.toInt(d.css(i.scrollbarYRail, 'borderBottomWidth'));
  d.css(i.scrollbarYRail, 'display', 'block');
  i.railYMarginHeight = h.toInt(d.css(i.scrollbarYRail, 'marginTop')) + h.toInt(d.css(i.scrollbarYRail, 'marginBottom'));
  d.css(i.scrollbarYRail, 'display', '');
  i.railYHeight = null;
  i.railYRatio = null;
}

function getId(element) {
  if (typeof element.dataset === 'undefined') {
    return element.getAttribute('data-ps-id');
  } else {
    return element.dataset.psId;
  }
}

function setId(element, id) {
  if (typeof element.dataset === 'undefined') {
    element.setAttribute('data-ps-id', id);
  } else {
    element.dataset.psId = id;
  }
}

function removeId(element) {
  if (typeof element.dataset === 'undefined') {
    element.removeAttribute('data-ps-id');
  } else {
    delete element.dataset.psId;
  }
}

exports.add = function (element) {
  var newId = guid();
  setId(element, newId);
  instances[newId] = new Instance(element);
  return instances[newId];
};

exports.remove = function (element) {
  delete instances[getId(element)];
  removeId(element);
};

exports.get = function (element) {
  return instances[getId(element)];
};

},{"../lib/class":2,"../lib/dom":3,"../lib/event-manager":4,"../lib/guid":5,"../lib/helper":6,"./default-setting":8}],19:[function(require,module,exports){
'use strict';

var cls = require('../lib/class')
  , d = require('../lib/dom')
  , h = require('../lib/helper')
  , instances = require('./instances')
  , updateScroll = require('./update-scroll');

function getThumbSize(i, thumbSize) {
  if (i.settings.minScrollbarLength) {
    thumbSize = Math.max(thumbSize, i.settings.minScrollbarLength);
  }
  if (i.settings.maxScrollbarLength) {
    thumbSize = Math.min(thumbSize, i.settings.maxScrollbarLength);
  }
  return thumbSize;
}

function updateCss(element, i) {
  var xRailOffset = {width: i.railXWidth};
  if (i.isRtl) {
    xRailOffset.left = i.negativeScrollAdjustment + element.scrollLeft + i.containerWidth - i.contentWidth;
  } else {
    xRailOffset.left = element.scrollLeft;
  }
  if (i.isScrollbarXUsingBottom) {
    xRailOffset.bottom = i.scrollbarXBottom - element.scrollTop;
  } else {
    xRailOffset.top = i.scrollbarXTop + element.scrollTop;
  }
  d.css(i.scrollbarXRail, xRailOffset);

  var yRailOffset = {top: element.scrollTop, height: i.railYHeight};
  if (i.isScrollbarYUsingRight) {
    if (i.isRtl) {
      yRailOffset.right = i.contentWidth - (i.negativeScrollAdjustment + element.scrollLeft) - i.scrollbarYRight - i.scrollbarYOuterWidth;
    } else {
      yRailOffset.right = i.scrollbarYRight - element.scrollLeft;
    }
  } else {
    if (i.isRtl) {
      yRailOffset.left = i.negativeScrollAdjustment + element.scrollLeft + i.containerWidth * 2 - i.contentWidth - i.scrollbarYLeft - i.scrollbarYOuterWidth;
    } else {
      yRailOffset.left = i.scrollbarYLeft + element.scrollLeft;
    }
  }
  d.css(i.scrollbarYRail, yRailOffset);

  d.css(i.scrollbarX, {left: i.scrollbarXLeft, width: i.scrollbarXWidth - i.railBorderXWidth});
  d.css(i.scrollbarY, {top: i.scrollbarYTop, height: i.scrollbarYHeight - i.railBorderYWidth});
}

module.exports = function (element) {
  var i = instances.get(element);

  i.containerWidth = element.clientWidth;
  i.containerHeight = element.clientHeight;
  i.contentWidth = element.scrollWidth;
  i.contentHeight = element.scrollHeight;

  var existingRails;
  if (!element.contains(i.scrollbarXRail)) {
    existingRails = d.queryChildren(element, '.ps-scrollbar-x-rail');
    if (existingRails.length > 0) {
      existingRails.forEach(function (rail) {
        d.remove(rail);
      });
    }
    d.appendTo(i.scrollbarXRail, element);
  }
  if (!element.contains(i.scrollbarYRail)) {
    existingRails = d.queryChildren(element, '.ps-scrollbar-y-rail');
    if (existingRails.length > 0) {
      existingRails.forEach(function (rail) {
        d.remove(rail);
      });
    }
    d.appendTo(i.scrollbarYRail, element);
  }

  if (!i.settings.suppressScrollX && i.containerWidth + i.settings.scrollXMarginOffset < i.contentWidth) {
    i.scrollbarXActive = true;
    i.railXWidth = i.containerWidth - i.railXMarginWidth;
    i.railXRatio = i.containerWidth / i.railXWidth;
    i.scrollbarXWidth = getThumbSize(i, h.toInt(i.railXWidth * i.containerWidth / i.contentWidth));
    i.scrollbarXLeft = h.toInt((i.negativeScrollAdjustment + element.scrollLeft) * (i.railXWidth - i.scrollbarXWidth) / (i.contentWidth - i.containerWidth));
  } else {
    i.scrollbarXActive = false;
  }

  if (!i.settings.suppressScrollY && i.containerHeight + i.settings.scrollYMarginOffset < i.contentHeight) {
    i.scrollbarYActive = true;
    i.railYHeight = i.containerHeight - i.railYMarginHeight;
    i.railYRatio = i.containerHeight / i.railYHeight;
    i.scrollbarYHeight = getThumbSize(i, h.toInt(i.railYHeight * i.containerHeight / i.contentHeight));
    i.scrollbarYTop = h.toInt(element.scrollTop * (i.railYHeight - i.scrollbarYHeight) / (i.contentHeight - i.containerHeight));
  } else {
    i.scrollbarYActive = false;
  }

  if (i.scrollbarXLeft >= i.railXWidth - i.scrollbarXWidth) {
    i.scrollbarXLeft = i.railXWidth - i.scrollbarXWidth;
  }
  if (i.scrollbarYTop >= i.railYHeight - i.scrollbarYHeight) {
    i.scrollbarYTop = i.railYHeight - i.scrollbarYHeight;
  }

  updateCss(element, i);

  if (i.scrollbarXActive) {
    cls.add(element, 'ps-active-x');
  } else {
    cls.remove(element, 'ps-active-x');
    i.scrollbarXWidth = 0;
    i.scrollbarXLeft = 0;
    updateScroll(element, 'left', 0);
  }
  if (i.scrollbarYActive) {
    cls.add(element, 'ps-active-y');
  } else {
    cls.remove(element, 'ps-active-y');
    i.scrollbarYHeight = 0;
    i.scrollbarYTop = 0;
    updateScroll(element, 'top', 0);
  }
};

},{"../lib/class":2,"../lib/dom":3,"../lib/helper":6,"./instances":18,"./update-scroll":20}],20:[function(require,module,exports){
'use strict';

var instances = require('./instances');

var upEvent = document.createEvent('Event')
  , downEvent = document.createEvent('Event')
  , leftEvent = document.createEvent('Event')
  , rightEvent = document.createEvent('Event')
  , yEvent = document.createEvent('Event')
  , xEvent = document.createEvent('Event')
  , xStartEvent = document.createEvent('Event')
  , xEndEvent = document.createEvent('Event')
  , yStartEvent = document.createEvent('Event')
  , yEndEvent = document.createEvent('Event')
  , lastTop
  , lastLeft;

upEvent.initEvent('ps-scroll-up', true, true);
downEvent.initEvent('ps-scroll-down', true, true);
leftEvent.initEvent('ps-scroll-left', true, true);
rightEvent.initEvent('ps-scroll-right', true, true);
yEvent.initEvent('ps-scroll-y', true, true);
xEvent.initEvent('ps-scroll-x', true, true);
xStartEvent.initEvent('ps-x-reach-start', true, true);
xEndEvent.initEvent('ps-x-reach-end', true, true);
yStartEvent.initEvent('ps-y-reach-start', true, true);
yEndEvent.initEvent('ps-y-reach-end', true, true);

module.exports = function (element, axis, value) {
  if (typeof element === 'undefined') {
    throw 'You must provide an element to the update-scroll function';
  }

  if (typeof axis === 'undefined') {
    throw 'You must provide an axis to the update-scroll function';
  }

  if (typeof value === 'undefined') {
    throw 'You must provide a value to the update-scroll function';
  }

  if (axis === 'top' && value <= 0) {
    element.scrollTop = value = 0; // don't allow negative scroll
    element.dispatchEvent(yStartEvent);
  }

  if (axis === 'left' && value <= 0) {
    element.scrollLeft = value = 0; // don't allow negative scroll
    element.dispatchEvent(xStartEvent);
  }

  var i = instances.get(element);

  if (axis === 'top' && value >= i.contentHeight - i.containerHeight) {
    element.scrollTop = value = i.contentHeight - i.containerHeight; // don't allow scroll past container
    element.dispatchEvent(yEndEvent);
  }

  if (axis === 'left' && value >= i.contentWidth - i.containerWidth) {
    element.scrollLeft = value = i.contentWidth - i.containerWidth; // don't allow scroll past container
    element.dispatchEvent(xEndEvent);
  }

  if (!lastTop) {
    lastTop = element.scrollTop;
  }

  if (!lastLeft) {
    lastLeft = element.scrollLeft;
  }

  if (axis === 'top' && value < lastTop) {
    element.dispatchEvent(upEvent);
  }

  if (axis === 'top' && value > lastTop) {
    element.dispatchEvent(downEvent);
  }

  if (axis === 'left' && value < lastLeft) {
    element.dispatchEvent(leftEvent);
  }

  if (axis === 'left' && value > lastLeft) {
    element.dispatchEvent(rightEvent);
  }

  if (axis === 'top') {
    element.scrollTop = lastTop = value;
    element.dispatchEvent(yEvent);
  }

  if (axis === 'left') {
    element.scrollLeft = lastLeft = value;
    element.dispatchEvent(xEvent);
  }

};

},{"./instances":18}],21:[function(require,module,exports){
'use strict';

var d = require('../lib/dom')
  , h = require('../lib/helper')
  , instances = require('./instances')
  , updateGeometry = require('./update-geometry')
  , updateScroll = require('./update-scroll');

module.exports = function (element) {
  var i = instances.get(element);

  if (!i) {
    return;
  }

  // Recalcuate negative scrollLeft adjustment
  i.negativeScrollAdjustment = i.isNegativeScroll ? element.scrollWidth - element.clientWidth : 0;

  // Recalculate rail margins
  d.css(i.scrollbarXRail, 'display', 'block');
  d.css(i.scrollbarYRail, 'display', 'block');
  i.railXMarginWidth = h.toInt(d.css(i.scrollbarXRail, 'marginLeft')) + h.toInt(d.css(i.scrollbarXRail, 'marginRight'));
  i.railYMarginHeight = h.toInt(d.css(i.scrollbarYRail, 'marginTop')) + h.toInt(d.css(i.scrollbarYRail, 'marginBottom'));

  // Hide scrollbars not to affect scrollWidth and scrollHeight
  d.css(i.scrollbarXRail, 'display', 'none');
  d.css(i.scrollbarYRail, 'display', 'none');

  updateGeometry(element);

  // Update top/left scroll to trigger events
  updateScroll(element, 'top', element.scrollTop);
  updateScroll(element, 'left', element.scrollLeft);

  d.css(i.scrollbarXRail, 'display', '');
  d.css(i.scrollbarYRail, 'display', '');
};

},{"../lib/dom":3,"../lib/helper":6,"./instances":18,"./update-geometry":19,"./update-scroll":20}]},{},[1]);