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smooth-scrolling.js
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(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = void 0;
var _domClasses = _interopRequireDefault(require("dom-classes"));
var _domCreateElement = _interopRequireDefault(require("dom-create-element"));
var _prefix = _interopRequireDefault(require("prefix"));
var _virtualScroll = _interopRequireDefault(require("virtual-scroll"));
var _domEvents = _interopRequireDefault(require("dom-events"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
var Smooth =
/*#__PURE__*/
function () {
function Smooth() {
var opt = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, Smooth);
this.createBound();
this.options = opt;
this.prefix = (0, _prefix["default"])('transform');
this.rAF = undefined; // It seems that under heavy load, Firefox will still call the RAF callback even though the RAF has been canceled
// To prevent that we set a flag to prevent any callback to be executed when RAF is removed
this.isRAFCanceled = false;
var constructorName = this.constructor.name ? this.constructor.name : 'Smooth';
this["extends"] = typeof opt["extends"] === 'undefined' ? this.constructor !== Smooth : opt["extends"];
this.callback = this.options.callback || null;
this.vars = {
direction: this.options.direction || 'vertical',
"native": this.options["native"] || false,
ease: this.options.ease || 0.075,
preload: this.options.preload || false,
current: 0,
last: 0,
target: 0,
height: window.innerHeight,
width: window.innerWidth,
bounding: 0,
timer: null,
ticking: false
};
this.vs = this.vars["native"] ? null : new _virtualScroll["default"]({
limitInertia: this.options.vs && this.options.vs.limitInertia || false,
mouseMultiplier: this.options.vs && this.options.vs.mouseMultiplier || 1,
touchMultiplier: this.options.vs && this.options.vs.touchMultiplier || 1.5,
firefoxMultiplier: this.options.vs && this.options.vs.firefoxMultiplier || 30,
preventTouch: this.options.vs && this.options.vs.preventTouch || true
});
this.dom = {
listener: this.options.listener || document.body,
section: this.options.section || document.querySelector('.vs-section') || null,
scrollbar: this.vars["native"] || this.options.noscrollbar ? null : {
state: {
clicked: false,
x: 0
},
el: (0, _domCreateElement["default"])({
selector: 'div',
styles: "vs-scrollbar vs-".concat(this.vars.direction, " vs-scrollbar-").concat(constructorName.toLowerCase())
}),
drag: {
el: (0, _domCreateElement["default"])({
selector: 'div',
styles: 'vs-scrolldrag'
}),
delta: 0,
height: 50
}
}
};
}
_createClass(Smooth, [{
key: "createBound",
value: function createBound() {
var _this = this;
['run', 'calc', 'debounce', 'resize', 'mouseUp', 'mouseDown', 'mouseMove', 'calcScroll', 'scrollTo'].forEach(function (fn) {
return _this[fn] = _this[fn].bind(_this);
});
}
}, {
key: "init",
value: function init() {
this.addClasses();
this.vars.preload && this.preloadImages();
this.vars["native"] ? this.addFakeScrollHeight() : !this.options.noscrollbar && this.addFakeScrollBar();
this.addEvents();
this.resize();
}
}, {
key: "addClasses",
value: function addClasses() {
var type = this.vars["native"] ? 'native' : 'virtual';
var direction = this.vars.direction === 'vertical' ? 'y' : 'x';
_domClasses["default"].add(this.dom.listener, "is-".concat(type, "-scroll"));
_domClasses["default"].add(this.dom.listener, "".concat(direction, "-scroll"));
}
}, {
key: "preloadImages",
value: function preloadImages() {
var _this2 = this;
var images = Array.prototype.slice.call(this.dom.listener.querySelectorAll('img'), 0);
images.forEach(function (image) {
var img = document.createElement('img');
_domEvents["default"].once(img, 'load', function () {
images.splice(images.indexOf(image), 1);
images.length === 0 && _this2.resize();
});
img.src = image.getAttribute('src');
});
}
}, {
key: "calc",
value: function calc(e) {
var delta = this.vars.direction == 'horizontal' ? e.deltaX : e.deltaY;
this.vars.target += delta * -1;
this.clampTarget();
}
}, {
key: "debounce",
value: function debounce() {
var _this3 = this;
var win = this.dom.listener === document.body;
this.vars.target = this.vars.direction === 'vertical' ? win ? window.scrollY || window.pageYOffset : this.dom.listener.scrollTop : win ? window.scrollX || window.pageXOffset : this.dom.listener.scrollLeft;
clearTimeout(this.vars.timer);
if (!this.vars.ticking) {
this.vars.ticking = true;
_domClasses["default"].add(this.dom.listener, 'is-scrolling');
}
this.vars.timer = setTimeout(function () {
_this3.vars.ticking = false;
_domClasses["default"].remove(_this3.dom.listener, 'is-scrolling');
}, 200);
}
}, {
key: "run",
value: function run() {
if (this.isRAFCanceled) return;
this.vars.current += (this.vars.target - this.vars.current) * this.vars.ease;
this.vars.current < .1 && (this.vars.current = 0);
this.requestAnimationFrame();
if (!this["extends"]) {
this.dom.section.style[this.prefix] = this.getTransform(-this.vars.current.toFixed(2));
}
if (!this.vars["native"] && !this.options.noscrollbar) {
var size = this.dom.scrollbar.drag.height;
var bounds = this.vars.direction === 'vertical' ? this.vars.height : this.vars.width;
var value = Math.abs(this.vars.current) / (this.vars.bounding / (bounds - size)) + size / .5 - size;
var clamp = Math.max(0, Math.min(value - size, value + size));
this.dom.scrollbar.drag.el.style[this.prefix] = this.getTransform(clamp.toFixed(2));
}
if (this.callback && this.vars.current !== this.vars.last) {
this.callback(this.vars.current);
}
this.vars.last = this.vars.current;
}
}, {
key: "getTransform",
value: function getTransform(value) {
return this.vars.direction === 'vertical' ? "translate3d(0,".concat(value, "px,0)") : "translate3d(".concat(value, "px,0,0)");
}
}, {
key: "on",
value: function on() {
var requestAnimationFrame = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
if (this.isRAFCanceled) {
this.isRAFCanceled = false;
}
var node = this.dom.listener === document.body ? window : this.dom.listener;
this.vars["native"] ? _domEvents["default"].on(node, 'scroll', this.debounce) : this.vs && this.vs.on(this.calc);
requestAnimationFrame && this.requestAnimationFrame();
}
}, {
key: "off",
value: function off() {
var cancelAnimationFrame = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;
var node = this.dom.listener === document.body ? window : this.dom.listener;
this.vars["native"] ? _domEvents["default"].off(node, 'scroll', this.debounce) : this.vs && this.vs.off(this.calc);
cancelAnimationFrame && this.cancelAnimationFrame();
}
}, {
key: "requestAnimationFrame",
value: function (_requestAnimationFrame) {
function requestAnimationFrame() {
return _requestAnimationFrame.apply(this, arguments);
}
requestAnimationFrame.toString = function () {
return _requestAnimationFrame.toString();
};
return requestAnimationFrame;
}(function () {
this.rAF = requestAnimationFrame(this.run);
})
}, {
key: "cancelAnimationFrame",
value: function (_cancelAnimationFrame) {
function cancelAnimationFrame() {
return _cancelAnimationFrame.apply(this, arguments);
}
cancelAnimationFrame.toString = function () {
return _cancelAnimationFrame.toString();
};
return cancelAnimationFrame;
}(function () {
this.isRAFCanceled = true;
cancelAnimationFrame(this.rAF);
})
}, {
key: "addEvents",
value: function addEvents() {
this.on();
_domEvents["default"].on(window, 'resize', this.resize);
}
}, {
key: "removeEvents",
value: function removeEvents() {
this.off();
_domEvents["default"].off(window, 'resize', this.resize);
}
}, {
key: "addFakeScrollBar",
value: function addFakeScrollBar() {
this.dom.listener.appendChild(this.dom.scrollbar.el);
this.dom.scrollbar.el.appendChild(this.dom.scrollbar.drag.el);
_domEvents["default"].on(this.dom.scrollbar.el, 'click', this.calcScroll);
_domEvents["default"].on(this.dom.scrollbar.el, 'mousedown', this.mouseDown);
_domEvents["default"].on(document, 'mousemove', this.mouseMove);
_domEvents["default"].on(document, 'mouseup', this.mouseUp);
}
}, {
key: "removeFakeScrollBar",
value: function removeFakeScrollBar() {
_domEvents["default"].off(this.dom.scrollbar.el, 'click', this.calcScroll);
_domEvents["default"].off(this.dom.scrollbar.el, 'mousedown', this.mouseDown);
_domEvents["default"].off(document, 'mousemove', this.mouseMove);
_domEvents["default"].off(document, 'mouseup', this.mouseUp);
this.dom.listener.removeChild(this.dom.scrollbar.el);
}
}, {
key: "mouseDown",
value: function mouseDown(e) {
e.preventDefault();
e.which == 1 && (this.dom.scrollbar.state.clicked = true);
}
}, {
key: "mouseUp",
value: function mouseUp(e) {
this.dom.scrollbar.state.clicked = false;
_domClasses["default"].remove(this.dom.listener, 'is-dragging');
}
}, {
key: "mouseMove",
value: function mouseMove(e) {
this.dom.scrollbar.state.clicked && this.calcScroll(e);
}
}, {
key: "addFakeScrollHeight",
value: function addFakeScrollHeight() {
this.dom.scroll = (0, _domCreateElement["default"])({
selector: 'div',
styles: 'vs-scroll-view'
});
this.dom.listener.appendChild(this.dom.scroll);
}
}, {
key: "removeFakeScrollHeight",
value: function removeFakeScrollHeight() {
this.dom.listener.removeChild(this.dom.scroll);
}
}, {
key: "calcScroll",
value: function calcScroll(e) {
var client = this.vars.direction == 'vertical' ? e.clientY : e.clientX;
var bounds = this.vars.direction == 'vertical' ? this.vars.height : this.vars.width;
var delta = client * (this.vars.bounding / bounds);
_domClasses["default"].add(this.dom.listener, 'is-dragging');
this.vars.target = delta;
this.clampTarget();
this.dom.scrollbar && (this.dom.scrollbar.drag.delta = this.vars.target);
}
}, {
key: "scrollTo",
value: function scrollTo(offset) {
if (this.vars["native"]) {
this.vars.direction == 'vertical' ? window.scrollTo(0, offset) : window.scrollTo(offset, 0);
} else {
this.vars.target = offset;
this.clampTarget();
}
}
}, {
key: "resize",
value: function resize() {
var prop = this.vars.direction === 'vertical' ? 'height' : 'width';
this.vars.height = window.innerHeight;
this.vars.width = window.innerWidth;
if (!this["extends"]) {
var bounding = this.dom.section.getBoundingClientRect();
this.vars.bounding = this.vars.direction === 'vertical' ? bounding.height - (this.vars["native"] ? 0 : this.vars.height) : bounding.right - (this.vars["native"] ? 0 : this.vars.width);
}
if (!this.vars["native"] && !this.options.noscrollbar) {
this.dom.scrollbar.drag.height = this.vars.height * (this.vars.height / (this.vars.bounding + this.vars.height));
this.dom.scrollbar.drag.el.style[prop] = "".concat(this.dom.scrollbar.drag.height, "px");
} else if (this.vars["native"]) {
this.dom.scroll.style[prop] = "".concat(this.vars.bounding, "px");
}
!this.vars["native"] && this.clampTarget();
}
}, {
key: "clampTarget",
value: function clampTarget() {
this.vars.target = Math.round(Math.max(0, Math.min(this.vars.target, this.vars.bounding)));
}
}, {
key: "destroy",
value: function destroy() {
if (this.vars["native"]) {
_domClasses["default"].remove(this.dom.listener, 'is-native-scroll');
this.removeFakeScrollHeight();
} else {
_domClasses["default"].remove(this.dom.listener, 'is-virtual-scroll');
!this.options.noscrollbar && this.removeFakeScrollBar();
}
this.vars.direction === 'vertical' ? _domClasses["default"].remove(this.dom.listener, 'y-scroll') : _domClasses["default"].remove(this.dom.listener, 'x-scroll');
this.vars.current = 0;
this.vs && (this.vs.destroy(), this.vs = null);
this.removeEvents();
}
}]);
return Smooth;
}();
exports["default"] = Smooth;
window.Smooth = Smooth;
},{"dom-classes":3,"dom-create-element":4,"dom-events":5,"prefix":9,"virtual-scroll":15}],2:[function(require,module,exports){
'use strict';
var toString = Object.prototype.toString,
hasOwnProperty = Object.prototype.hasOwnProperty;
module.exports = function(object) {
if(!object) return console.warn('bindAll requires at least one argument.');
var functions = Array.prototype.slice.call(arguments, 1);
if (functions.length === 0) {
for (var method in object) {
if(hasOwnProperty.call(object, method)) {
if(typeof object[method] == 'function' && toString.call(object[method]) == "[object Function]") {
functions.push(method);
}
}
}
}
for(var i = 0; i < functions.length; i++) {
var f = functions[i];
object[f] = bind(object[f], object);
}
};
/*
Faster bind without specific-case checking. (see https://coderwall.com/p/oi3j3w).
bindAll is only needed for events binding so no need to make slow fixes for constructor
or partial application.
*/
function bind(func, context) {
return function() {
return func.apply(context, arguments);
};
}
},{}],3:[function(require,module,exports){
/**
* Module dependencies.
*/
var index = require('indexof');
/**
* Whitespace regexp.
*/
var whitespaceRe = /\s+/;
/**
* toString reference.
*/
var toString = Object.prototype.toString;
module.exports = classes;
module.exports.add = add;
module.exports.contains = has;
module.exports.has = has;
module.exports.toggle = toggle;
module.exports.remove = remove;
module.exports.removeMatching = removeMatching;
function classes (el) {
if (el.classList) {
return el.classList;
}
var str = el.className.replace(/^\s+|\s+$/g, '');
var arr = str.split(whitespaceRe);
if ('' === arr[0]) arr.shift();
return arr;
}
function add (el, name) {
// classList
if (el.classList) {
el.classList.add(name);
return;
}
// fallback
var arr = classes(el);
var i = index(arr, name);
if (!~i) arr.push(name);
el.className = arr.join(' ');
}
function has (el, name) {
return el.classList
? el.classList.contains(name)
: !! ~index(classes(el), name);
}
function remove (el, name) {
if ('[object RegExp]' == toString.call(name)) {
return removeMatching(el, name);
}
// classList
if (el.classList) {
el.classList.remove(name);
return;
}
// fallback
var arr = classes(el);
var i = index(arr, name);
if (~i) arr.splice(i, 1);
el.className = arr.join(' ');
}
function removeMatching (el, re, ref) {
var arr = Array.prototype.slice.call(classes(el));
for (var i = 0; i < arr.length; i++) {
if (re.test(arr[i])) {
remove(el, arr[i]);
}
}
}
function toggle (el, name) {
// classList
if (el.classList) {
return el.classList.toggle(name);
}
// fallback
if (has(el, name)) {
remove(el, name);
} else {
add(el, name);
}
}
},{"indexof":6}],4:[function(require,module,exports){
/*
`dom-create-element`
var create = require('dom-create-element');
var el = create({
selector: 'div',
styles: 'preloader',
html: '<span>Text</span>'
});
*/
module.exports = create;
function create(opt) {
opt = opt || {};
var el = document.createElement(opt.selector);
if(opt.attr) for(var index in opt.attr)
opt.attr.hasOwnProperty(index) && el.setAttribute(index, opt.attr[index]);
"a" == opt.selector && opt.link && (
el.href = opt.link,
opt.target && el.setAttribute("target", opt.target)
);
"img" == opt.selector && opt.src && (
el.src = opt.src,
opt.lazyload && (
el.style.opacity = 0,
el.onload = function(){
el.style.opacity = 1;
}
)
);
opt.id && (el.id = opt.id);
opt.styles && (el.className = opt.styles);
opt.html && (el.innerHTML = opt.html);
opt.children && (el.appendChild(opt.children));
return el;
};
},{}],5:[function(require,module,exports){
var synth = require('synthetic-dom-events');
var on = function(element, name, fn, capture) {
return element.addEventListener(name, fn, capture || false);
};
var off = function(element, name, fn, capture) {
return element.removeEventListener(name, fn, capture || false);
};
var once = function (element, name, fn, capture) {
function tmp (ev) {
off(element, name, tmp, capture);
fn(ev);
}
on(element, name, tmp, capture);
};
var emit = function(element, name, opt) {
var ev = synth(name, opt);
element.dispatchEvent(ev);
};
if (!document.addEventListener) {
on = function(element, name, fn) {
return element.attachEvent('on' + name, fn);
};
}
if (!document.removeEventListener) {
off = function(element, name, fn) {
return element.detachEvent('on' + name, fn);
};
}
if (!document.dispatchEvent) {
emit = function(element, name, opt) {
var ev = synth(name, opt);
return element.fireEvent('on' + ev.type, ev);
};
}
module.exports = {
on: on,
off: off,
once: once,
emit: emit
};
},{"synthetic-dom-events":10}],6:[function(require,module,exports){
var indexOf = [].indexOf;
module.exports = function(arr, obj){
if (indexOf) return arr.indexOf(obj);
for (var i = 0; i < arr.length; ++i) {
if (arr[i] === obj) return i;
}
return -1;
};
},{}],7:[function(require,module,exports){
// Generated by CoffeeScript 1.9.2
(function() {
var root;
root = typeof exports !== "undefined" && exports !== null ? exports : this;
root.Lethargy = (function() {
function Lethargy(stability, sensitivity, tolerance, delay) {
this.stability = stability != null ? Math.abs(stability) : 8;
this.sensitivity = sensitivity != null ? 1 + Math.abs(sensitivity) : 100;
this.tolerance = tolerance != null ? 1 + Math.abs(tolerance) : 1.1;
this.delay = delay != null ? delay : 150;
this.lastUpDeltas = (function() {
var i, ref, results;
results = [];
for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {
results.push(null);
}
return results;
}).call(this);
this.lastDownDeltas = (function() {
var i, ref, results;
results = [];
for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {
results.push(null);
}
return results;
}).call(this);
this.deltasTimestamp = (function() {
var i, ref, results;
results = [];
for (i = 1, ref = this.stability * 2; 1 <= ref ? i <= ref : i >= ref; 1 <= ref ? i++ : i--) {
results.push(null);
}
return results;
}).call(this);
}
Lethargy.prototype.check = function(e) {
var lastDelta;
e = e.originalEvent || e;
if (e.wheelDelta != null) {
lastDelta = e.wheelDelta;
} else if (e.deltaY != null) {
lastDelta = e.deltaY * -40;
} else if ((e.detail != null) || e.detail === 0) {
lastDelta = e.detail * -40;
}
this.deltasTimestamp.push(Date.now());
this.deltasTimestamp.shift();
if (lastDelta > 0) {
this.lastUpDeltas.push(lastDelta);
this.lastUpDeltas.shift();
return this.isInertia(1);
} else {
this.lastDownDeltas.push(lastDelta);
this.lastDownDeltas.shift();
return this.isInertia(-1);
}
return false;
};
Lethargy.prototype.isInertia = function(direction) {
var lastDeltas, lastDeltasNew, lastDeltasOld, newAverage, newSum, oldAverage, oldSum;
lastDeltas = direction === -1 ? this.lastDownDeltas : this.lastUpDeltas;
if (lastDeltas[0] === null) {
return direction;
}
if (this.deltasTimestamp[(this.stability * 2) - 2] + this.delay > Date.now() && lastDeltas[0] === lastDeltas[(this.stability * 2) - 1]) {
return false;
}
lastDeltasOld = lastDeltas.slice(0, this.stability);
lastDeltasNew = lastDeltas.slice(this.stability, this.stability * 2);
oldSum = lastDeltasOld.reduce(function(t, s) {
return t + s;
});
newSum = lastDeltasNew.reduce(function(t, s) {
return t + s;
});
oldAverage = oldSum / lastDeltasOld.length;
newAverage = newSum / lastDeltasNew.length;
if (Math.abs(oldAverage) < Math.abs(newAverage * this.tolerance) && (this.sensitivity < Math.abs(newAverage))) {
return direction;
} else {
return false;
}
};
Lethargy.prototype.showLastUpDeltas = function() {
return this.lastUpDeltas;
};
Lethargy.prototype.showLastDownDeltas = function() {
return this.lastDownDeltas;
};
return Lethargy;
})();
}).call(this);
},{}],8:[function(require,module,exports){
/*
object-assign
(c) Sindre Sorhus
@license MIT
*/
'use strict';
/* eslint-disable no-unused-vars */
var getOwnPropertySymbols = Object.getOwnPropertySymbols;
var hasOwnProperty = Object.prototype.hasOwnProperty;
var propIsEnumerable = Object.prototype.propertyIsEnumerable;
function toObject(val) {
if (val === null || val === undefined) {
throw new TypeError('Object.assign cannot be called with null or undefined');
}
return Object(val);
}
function shouldUseNative() {
try {
if (!Object.assign) {
return false;
}
// Detect buggy property enumeration order in older V8 versions.
// https://bugs.chromium.org/p/v8/issues/detail?id=4118
var test1 = new String('abc'); // eslint-disable-line no-new-wrappers
test1[5] = 'de';
if (Object.getOwnPropertyNames(test1)[0] === '5') {
return false;
}
// https://bugs.chromium.org/p/v8/issues/detail?id=3056
var test2 = {};
for (var i = 0; i < 10; i++) {
test2['_' + String.fromCharCode(i)] = i;
}
var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
return test2[n];
});
if (order2.join('') !== '0123456789') {
return false;
}
// https://bugs.chromium.org/p/v8/issues/detail?id=3056
var test3 = {};
'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
test3[letter] = letter;
});
if (Object.keys(Object.assign({}, test3)).join('') !==
'abcdefghijklmnopqrst') {
return false;
}
return true;
} catch (err) {
// We don't expect any of the above to throw, but better to be safe.
return false;
}
}
module.exports = shouldUseNative() ? Object.assign : function (target, source) {
var from;
var to = toObject(target);
var symbols;
for (var s = 1; s < arguments.length; s++) {
from = Object(arguments[s]);
for (var key in from) {
if (hasOwnProperty.call(from, key)) {
to[key] = from[key];
}
}
if (getOwnPropertySymbols) {
symbols = getOwnPropertySymbols(from);
for (var i = 0; i < symbols.length; i++) {
if (propIsEnumerable.call(from, symbols[i])) {
to[symbols[i]] = from[symbols[i]];
}
}
}
}
return to;
};
},{}],9:[function(require,module,exports){
// check document first so it doesn't error in node.js
var style = typeof document != 'undefined'
? document.createElement('p').style
: {}
var prefixes = ['O', 'ms', 'Moz', 'Webkit']
var upper = /([A-Z])/g
var memo = {}
/**
* prefix `key`
*
* prefix('transform') // => WebkitTransform
*
* @param {String} key
* @return {String}
* @api public
*/
function prefix(key){
// Camel case
key = key.replace(/-([a-z])/g, function(_, char){
return char.toUpperCase()
})
// Without prefix
if (style[key] !== undefined) return key
// With prefix
var Key = key.charAt(0).toUpperCase() + key.slice(1)
var i = prefixes.length
while (i--) {
var name = prefixes[i] + Key
if (style[name] !== undefined) return name
}
return key
}
/**
* Memoized version of `prefix`
*
* @param {String} key
* @return {String}
* @api public
*/
function prefixMemozied(key){
return key in memo
? memo[key]
: memo[key] = prefix(key)
}
/**
* Create a dashed prefix
*
* @param {String} key
* @return {String}
* @api public
*/
function prefixDashed(key){
key = prefix(key)
if (upper.test(key)) {
key = '-' + key.replace(upper, '-$1')
upper.lastIndex = 0
}
return key.toLowerCase()
}
module.exports = prefixMemozied
module.exports.dash = prefixDashed
},{}],10:[function(require,module,exports){
// for compression
var win = window;
var doc = document || {};
var root = doc.documentElement || {};
// detect if we need to use firefox KeyEvents vs KeyboardEvents
var use_key_event = true;
try {
doc.createEvent('KeyEvents');
}
catch (err) {
use_key_event = false;
}
// Workaround for https://bugs.webkit.org/show_bug.cgi?id=16735
function check_kb(ev, opts) {
if (ev.ctrlKey != (opts.ctrlKey || false) ||
ev.altKey != (opts.altKey || false) ||
ev.shiftKey != (opts.shiftKey || false) ||
ev.metaKey != (opts.metaKey || false) ||
ev.keyCode != (opts.keyCode || 0) ||
ev.charCode != (opts.charCode || 0)) {
ev = document.createEvent('Event');
ev.initEvent(opts.type, opts.bubbles, opts.cancelable);
ev.ctrlKey = opts.ctrlKey || false;
ev.altKey = opts.altKey || false;
ev.shiftKey = opts.shiftKey || false;
ev.metaKey = opts.metaKey || false;
ev.keyCode = opts.keyCode || 0;
ev.charCode = opts.charCode || 0;
}
return ev;
}
// modern browsers, do a proper dispatchEvent()
var modern = function(type, opts) {
opts = opts || {};
// which init fn do we use
var family = typeOf(type);
var init_fam = family;
if (family === 'KeyboardEvent' && use_key_event) {
family = 'KeyEvents';
init_fam = 'KeyEvent';
}
var ev = doc.createEvent(family);
var init_fn = 'init' + init_fam;
var init = typeof ev[init_fn] === 'function' ? init_fn : 'initEvent';
var sig = initSignatures[init];
var args = [];
var used = {};
opts.type = type;
for (var i = 0; i < sig.length; ++i) {
var key = sig[i];
var val = opts[key];
// if no user specified value, then use event default
if (val === undefined) {
val = ev[key];
}
used[key] = true;
args.push(val);
}
ev[init].apply(ev, args);
// webkit key event issue workaround
if (family === 'KeyboardEvent') {
ev = check_kb(ev, opts);
}
// attach remaining unused options to the object
for (var key in opts) {
if (!used[key]) {
ev[key] = opts[key];
}
}
return ev;
};
var legacy = function (type, opts) {
opts = opts || {};
var ev = doc.createEventObject();
ev.type = type;
for (var key in opts) {
if (opts[key] !== undefined) {
ev[key] = opts[key];
}