Файл: plugins/bower_components/waypoints/lib/jquery.waypoints.js
Строк: 826
<?php
/*!
Waypoints - 3.1.1
Copyright © 2011-2015 Caleb Troughton
Licensed under the MIT license.
https://github.com/imakewebthings/waypoints/blog/master/licenses.txt
*/
(function() {
'use strict'
var keyCounter = 0
var allWaypoints = {}
/* http://imakewebthings.com/waypoints/api/waypoint */
function Waypoint(options) {
if (!options) {
throw new Error('No options passed to Waypoint constructor')
}
if (!options.element) {
throw new Error('No element option passed to Waypoint constructor')
}
if (!options.handler) {
throw new Error('No handler option passed to Waypoint constructor')
}
this.key = 'waypoint-' + keyCounter
this.options = Waypoint.Adapter.extend({}, Waypoint.defaults, options)
this.element = this.options.element
this.adapter = new Waypoint.Adapter(this.element)
this.callback = options.handler
this.axis = this.options.horizontal ? 'horizontal' : 'vertical'
this.enabled = this.options.enabled
this.triggerPoint = null
this.group = Waypoint.Group.findOrCreate({
name: this.options.group,
axis: this.axis
})
this.context = Waypoint.Context.findOrCreateByElement(this.options.context)
if (Waypoint.offsetAliases[this.options.offset]) {
this.options.offset = Waypoint.offsetAliases[this.options.offset]
}
this.group.add(this)
this.context.add(this)
allWaypoints[this.key] = this
keyCounter += 1
}
/* Private */
Waypoint.prototype.queueTrigger = function(direction) {
this.group.queueTrigger(this, direction)
}
/* Private */
Waypoint.prototype.trigger = function(args) {
if (!this.enabled) {
return
}
if (this.callback) {
this.callback.apply(this, args)
}
}
/* Public */
/* http://imakewebthings.com/waypoints/api/destroy */
Waypoint.prototype.destroy = function() {
this.context.remove(this)
this.group.remove(this)
delete allWaypoints[this.key]
}
/* Public */
/* http://imakewebthings.com/waypoints/api/disable */
Waypoint.prototype.disable = function() {
this.enabled = false
return this
}
/* Public */
/* http://imakewebthings.com/waypoints/api/enable */
Waypoint.prototype.enable = function() {
this.context.refresh()
this.enabled = true
return this
}
/* Public */
/* http://imakewebthings.com/waypoints/api/next */
Waypoint.prototype.next = function() {
return this.group.next(this)
}
/* Public */
/* http://imakewebthings.com/waypoints/api/previous */
Waypoint.prototype.previous = function() {
return this.group.previous(this)
}
/* Private */
Waypoint.invokeAll = function(method) {
var allWaypointsArray = []
for (var waypointKey in allWaypoints) {
allWaypointsArray.push(allWaypoints[waypointKey])
}
for (var i = 0, end = allWaypointsArray.length; i < end; i++) {
allWaypointsArray[i][method]()
}
}
/* Public */
/* http://imakewebthings.com/waypoints/api/destroy-all */
Waypoint.destroyAll = function() {
Waypoint.invokeAll('destroy')
}
/* Public */
/* http://imakewebthings.com/waypoints/api/disable-all */
Waypoint.disableAll = function() {
Waypoint.invokeAll('disable')
}
/* Public */
/* http://imakewebthings.com/waypoints/api/enable-all */
Waypoint.enableAll = function() {
Waypoint.invokeAll('enable')
}
/* Public */
/* http://imakewebthings.com/waypoints/api/refresh-all */
Waypoint.refreshAll = function() {
Waypoint.Context.refreshAll()
}
/* Public */
/* http://imakewebthings.com/waypoints/api/viewport-height */
Waypoint.viewportHeight = function() {
return window.innerHeight || document.documentElement.clientHeight
}
/* Public */
/* http://imakewebthings.com/waypoints/api/viewport-width */
Waypoint.viewportWidth = function() {
return document.documentElement.clientWidth
}
Waypoint.adapters = []
Waypoint.defaults = {
context: window,
continuous: true,
enabled: true,
group: 'default',
horizontal: false,
offset: 0
}
Waypoint.offsetAliases = {
'bottom-in-view': function() {
return this.context.innerHeight() - this.adapter.outerHeight()
},
'right-in-view': function() {
return this.context.innerWidth() - this.adapter.outerWidth()
}
}
window.Waypoint = Waypoint
}())
;(function() {
'use strict'
function requestAnimationFrameShim(callback) {
window.setTimeout(callback, 1000 / 60)
}
var keyCounter = 0
var contexts = {}
var Waypoint = window.Waypoint
var oldWindowLoad = window.onload
/* http://imakewebthings.com/waypoints/api/context */
function Context(element) {
this.element = element
this.Adapter = Waypoint.Adapter
this.adapter = new this.Adapter(element)
this.key = 'waypoint-context-' + keyCounter
this.didScroll = false
this.didResize = false
this.oldScroll = {
x: this.adapter.scrollLeft(),
y: this.adapter.scrollTop()
}
this.waypoints = {
vertical: {},
horizontal: {}
}
element.waypointContextKey = this.key
contexts[element.waypointContextKey] = this
keyCounter += 1
this.createThrottledScrollHandler()
this.createThrottledResizeHandler()
}
/* Private */
Context.prototype.add = function(waypoint) {
var axis = waypoint.options.horizontal ? 'horizontal' : 'vertical'
this.waypoints[axis][waypoint.key] = waypoint
this.refresh()
}
/* Private */
Context.prototype.checkEmpty = function() {
var horizontalEmpty = this.Adapter.isEmptyObject(this.waypoints.horizontal)
var verticalEmpty = this.Adapter.isEmptyObject(this.waypoints.vertical)
if (horizontalEmpty && verticalEmpty) {
this.adapter.off('.waypoints')
delete contexts[this.key]
}
}
/* Private */
Context.prototype.createThrottledResizeHandler = function() {
var self = this
function resizeHandler() {
self.handleResize()
self.didResize = false
}
this.adapter.on('resize.waypoints', function() {
if (!self.didResize) {
self.didResize = true
Waypoint.requestAnimationFrame(resizeHandler)
}
})
}
/* Private */
Context.prototype.createThrottledScrollHandler = function() {
var self = this
function scrollHandler() {
self.handleScroll()
self.didScroll = false
}
this.adapter.on('scroll.waypoints', function() {
if (!self.didScroll || Waypoint.isTouch) {
self.didScroll = true
Waypoint.requestAnimationFrame(scrollHandler)
}
})
}
/* Private */
Context.prototype.handleResize = function() {
Waypoint.Context.refreshAll()
}
/* Private */
Context.prototype.handleScroll = function() {
var triggeredGroups = {}
var axes = {
horizontal: {
newScroll: this.adapter.scrollLeft(),
oldScroll: this.oldScroll.x,
forward: 'right',
backward: 'left'
},
vertical: {
newScroll: this.adapter.scrollTop(),
oldScroll: this.oldScroll.y,
forward: 'down',
backward: 'up'
}
}
for (var axisKey in axes) {
var axis = axes[axisKey]
var isForward = axis.newScroll > axis.oldScroll
var direction = isForward ? axis.forward : axis.backward
for (var waypointKey in this.waypoints[axisKey]) {
var waypoint = this.waypoints[axisKey][waypointKey]
var wasBeforeTriggerPoint = axis.oldScroll < waypoint.triggerPoint
var nowAfterTriggerPoint = axis.newScroll >= waypoint.triggerPoint
var crossedForward = wasBeforeTriggerPoint && nowAfterTriggerPoint
var crossedBackward = !wasBeforeTriggerPoint && !nowAfterTriggerPoint
if (crossedForward || crossedBackward) {
waypoint.queueTrigger(direction)
triggeredGroups[waypoint.group.id] = waypoint.group
}
}
}
for (var groupKey in triggeredGroups) {
triggeredGroups[groupKey].flushTriggers()
}
this.oldScroll = {
x: axes.horizontal.newScroll,
y: axes.vertical.newScroll
}
}
/* Private */
Context.prototype.innerHeight = function() {
/*eslint-disable eqeqeq */
if (this.element == this.element.window) {
return Waypoint.viewportHeight()
}
/*eslint-enable eqeqeq */
return this.adapter.innerHeight()
}
/* Private */
Context.prototype.remove = function(waypoint) {
delete this.waypoints[waypoint.axis][waypoint.key]
this.checkEmpty()
}
/* Private */
Context.prototype.innerWidth = function() {
/*eslint-disable eqeqeq */
if (this.element == this.element.window) {
return Waypoint.viewportWidth()
}
/*eslint-enable eqeqeq */
return this.adapter.innerWidth()
}
/* Public */
/* http://imakewebthings.com/waypoints/api/context-destroy */
Context.prototype.destroy = function() {
var allWaypoints = []
for (var axis in this.waypoints) {
for (var waypointKey in this.waypoints[axis]) {
allWaypoints.push(this.waypoints[axis][waypointKey])
}
}
for (var i = 0, end = allWaypoints.length; i < end; i++) {
allWaypoints[i].destroy()
}
}
/* Public */
/* http://imakewebthings.com/waypoints/api/context-refresh */
Context.prototype.refresh = function() {
/*eslint-disable eqeqeq */
var isWindow = this.element == this.element.window
/*eslint-enable eqeqeq */
var contextOffset = this.adapter.offset()
var triggeredGroups = {}
var axes
this.handleScroll()
axes = {
horizontal: {
contextOffset: isWindow ? 0 : contextOffset.left,
contextScroll: isWindow ? 0 : this.oldScroll.x,
contextDimension: this.innerWidth(),
oldScroll: this.oldScroll.x,
forward: 'right',
backward: 'left',
offsetProp: 'left'
},
vertical: {
contextOffset: isWindow ? 0 : contextOffset.top,
contextScroll: isWindow ? 0 : this.oldScroll.y,
contextDimension: this.innerHeight(),
oldScroll: this.oldScroll.y,
forward: 'down',
backward: 'up',
offsetProp: 'top'
}
}
for (var axisKey in axes) {
var axis = axes[axisKey]
for (var waypointKey in this.waypoints[axisKey]) {
var waypoint = this.waypoints[axisKey][waypointKey]
var adjustment = waypoint.options.offset
var oldTriggerPoint = waypoint.triggerPoint
var elementOffset = 0
var freshWaypoint = oldTriggerPoint == null
var contextModifier, wasBeforeScroll, nowAfterScroll
var triggeredBackward, triggeredForward
if (waypoint.element !== waypoint.element.window) {
elementOffset = waypoint.adapter.offset()[axis.offsetProp]
}
if (typeof adjustment === 'function') {
adjustment = adjustment.apply(waypoint)
}
else if (typeof adjustment === 'string') {
adjustment = parseFloat(adjustment)
if (waypoint.options.offset.indexOf('%') > - 1) {
adjustment = Math.ceil(axis.contextDimension * adjustment / 100)
}
}
contextModifier = axis.contextScroll - axis.contextOffset
waypoint.triggerPoint = elementOffset + contextModifier - adjustment
wasBeforeScroll = oldTriggerPoint < axis.oldScroll
nowAfterScroll = waypoint.triggerPoint >= axis.oldScroll
triggeredBackward = wasBeforeScroll && nowAfterScroll
triggeredForward = !wasBeforeScroll && !nowAfterScroll
if (!freshWaypoint && triggeredBackward) {
waypoint.queueTrigger(axis.backward)
triggeredGroups[waypoint.group.id] = waypoint.group
}
else if (!freshWaypoint && triggeredForward) {
waypoint.queueTrigger(axis.forward)
triggeredGroups[waypoint.group.id] = waypoint.group
}
else if (freshWaypoint && axis.oldScroll >= waypoint.triggerPoint) {
waypoint.queueTrigger(axis.forward)
triggeredGroups[waypoint.group.id] = waypoint.group
}
}
}
for (var groupKey in triggeredGroups) {
triggeredGroups[groupKey].flushTriggers()
}
return this
}
/* Private */
Context.findOrCreateByElement = function(element) {
return Context.findByElement(element) || new Context(element)
}
/* Private */
Context.refreshAll = function() {
for (var contextId in contexts) {
contexts[contextId].refresh()
}
}
/* Public */
/* http://imakewebthings.com/waypoints/api/context-find-by-element */
Context.findByElement = function(element) {
return contexts[element.waypointContextKey]
}
window.onload = function() {
if (oldWindowLoad) {
oldWindowLoad()
}
Context.refreshAll()
}
Waypoint.requestAnimationFrame = function(callback) {
var requestFn = window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
requestAnimationFrameShim
requestFn.call(window, callback)
}
Waypoint.Context = Context
}())
;(function() {
'use strict'
function byTriggerPoint(a, b) {
return a.triggerPoint - b.triggerPoint
}
function byReverseTriggerPoint(a, b) {
return b.triggerPoint - a.triggerPoint
}
var groups = {
vertical: {},
horizontal: {}
}
var Waypoint = window.Waypoint
/* http://imakewebthings.com/waypoints/api/group */
function Group(options) {
this.name = options.name
this.axis = options.axis
this.id = this.name + '-' + this.axis
this.waypoints = []
this.clearTriggerQueues()
groups[this.axis][this.name] = this
}
/* Private */
Group.prototype.add = function(waypoint) {
this.waypoints.push(waypoint)
}
/* Private */
Group.prototype.clearTriggerQueues = function() {
this.triggerQueues = {
up: [],
down: [],
left: [],
right: []
}
}
/* Private */
Group.prototype.flushTriggers = function() {
for (var direction in this.triggerQueues) {
var waypoints = this.triggerQueues[direction]
var reverse = direction === 'up' || direction === 'left'
waypoints.sort(reverse ? byReverseTriggerPoint : byTriggerPoint)
for (var i = 0, end = waypoints.length; i < end; i += 1) {
var waypoint = waypoints[i]
if (waypoint.options.continuous || i === waypoints.length - 1) {
waypoint.trigger([direction])
}
}
}
this.clearTriggerQueues()
}
/* Private */
Group.prototype.next = function(waypoint) {
this.waypoints.sort(byTriggerPoint)
var index = Waypoint.Adapter.inArray(waypoint, this.waypoints)
var isLast = index === this.waypoints.length - 1
return isLast ? null : this.waypoints[index + 1]
}
/* Private */
Group.prototype.previous = function(waypoint) {
this.waypoints.sort(byTriggerPoint)
var index = Waypoint.Adapter.inArray(waypoint, this.waypoints)
return index ? this.waypoints[index - 1] : null
}
/* Private */
Group.prototype.queueTrigger = function(waypoint, direction) {
this.triggerQueues[direction].push(waypoint)
}
/* Private */
Group.prototype.remove = function(waypoint) {
var index = Waypoint.Adapter.inArray(waypoint, this.waypoints)
if (index > -1) {
this.waypoints.splice(index, 1)
}
}
/* Public */
/* http://imakewebthings.com/waypoints/api/first */
Group.prototype.first = function() {
return this.waypoints[0]
}
/* Public */
/* http://imakewebthings.com/waypoints/api/last */
Group.prototype.last = function() {
return this.waypoints[this.waypoints.length - 1]
}
/* Private */
Group.findOrCreate = function(options) {
return groups[options.axis][options.name] || new Group(options)
}
Waypoint.Group = Group
}())
;(function() {
'use strict'
var $ = window.jQuery
var Waypoint = window.Waypoint
function JQueryAdapter(element) {
this.$element = $(element)
}
$.each([
'innerHeight',
'innerWidth',
'off',
'offset',
'on',
'outerHeight',
'outerWidth',
'scrollLeft',
'scrollTop'
], function(i, method) {
JQueryAdapter.prototype[method] = function() {
var args = Array.prototype.slice.call(arguments)
return this.$element[method].apply(this.$element, args)
}
})
$.each([
'extend',
'inArray',
'isEmptyObject'
], function(i, method) {
JQueryAdapter[method] = $[method]
})
Waypoint.adapters.push({
name: 'jquery',
Adapter: JQueryAdapter
})
Waypoint.Adapter = JQueryAdapter
}())
;(function() {
'use strict'
var Waypoint = window.Waypoint
function createExtension(framework) {
return function() {
var waypoints = []
var overrides = arguments[0]
if (framework.isFunction(arguments[0])) {
overrides = framework.extend({}, arguments[1])
overrides.handler = arguments[0]
}
this.each(function() {
var options = framework.extend({}, overrides, {
element: this
})
if (typeof options.context === 'string') {
options.context = framework(this).closest(options.context)[0]
}
waypoints.push(new Waypoint(options))
})
return waypoints
}
}
if (window.jQuery) {
window.jQuery.fn.waypoint = createExtension(window.jQuery)
}
if (window.Zepto) {
window.Zepto.fn.waypoint = createExtension(window.Zepto)
}
}())
;
?>