Template:HFUT-China/Notebook/js/waypointsJs
/*! Waypoints - 4.0.0 Copyright © 2011-2015 Caleb Troughton Licensed under the MIT license. https://github.com/imakewebthings/waypoints/blob/master/licenses.txt
- /
! function () {
"use strict";
function t(o) {
if (!o) throw new Error("No options passed to Waypoint constructor");
if (!o.element) throw new Error("No element option passed to Waypoint constructor");
if (!o.handler) throw new Error("No handler option passed to Waypoint constructor");
this.key = "waypoint-" + e, this.options = t.Adapter.extend({}, t.defaults, o), this.element = this.options.element, this.adapter = new t.Adapter(this.element), this.callback = o.handler, this.axis = this.options.horizontal ? "horizontal" : "vertical", this.enabled = this.options.enabled, this.triggerPoint = null, this.group = t.Group.findOrCreate({
name: this.options.group,
axis: this.axis
}), this.context = t.Context.findOrCreateByElement(this.options.context), t.offsetAliases[this.options.offset] && (this.options.offset = t.offsetAliases[this.options.offset]), this.group.add(this), this.context.add(this), i[this.key] = this, e += 1
}
var e = 0,
i = {};
t.prototype.queueTrigger = function (t) {
this.group.queueTrigger(this, t)
}, t.prototype.trigger = function (t) {
this.enabled && this.callback && this.callback.apply(this, t)
}, t.prototype.destroy = function () {
this.context.remove(this), this.group.remove(this), delete i[this.key]
}, t.prototype.disable = function () {
return this.enabled = !1, this
}, t.prototype.enable = function () {
return this.context.refresh(), this.enabled = !0, this
}, t.prototype.next = function () {
return this.group.next(this)
}, t.prototype.previous = function () {
return this.group.previous(this)
}, t.invokeAll = function (t) {
var e = [];
for (var o in i) e.push(i[o]);
for (var n = 0, r = e.length; r > n; n++) e[n][t]()
}, t.destroyAll = function () {
t.invokeAll("destroy")
}, t.disableAll = function () {
t.invokeAll("disable")
}, t.enableAll = function () {
t.invokeAll("enable")
}, t.refreshAll = function () {
t.Context.refreshAll()
}, t.viewportHeight = function () {
return window.innerHeight || document.documentElement.clientHeight
}, t.viewportWidth = function () {
return document.documentElement.clientWidth
}, t.adapters = [], t.defaults = {
context: window,
continuous: !0,
enabled: !0,
group: "default",
horizontal: !1,
offset: 0
}, t.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 = t
}(), function () {
"use strict";
function t(t) {
window.setTimeout(t, 1e3 / 60)
}
function e(t) {
this.element = t, this.Adapter = n.Adapter, this.adapter = new this.Adapter(t), this.key = "waypoint-context-" + i, this.didScroll = !1, this.didResize = !1, this.oldScroll = {
x: this.adapter.scrollLeft(),
y: this.adapter.scrollTop()
}, this.waypoints = {
vertical: {},
horizontal: {}
}, t.waypointContextKey = this.key, o[t.waypointContextKey] = this, i += 1, this.createThrottledScrollHandler(), this.createThrottledResizeHandler()
}
var i = 0,
o = {},
n = window.Waypoint,
r = window.onload;
e.prototype.add = function (t) {
var e = t.options.horizontal ? "horizontal" : "vertical";
this.waypoints[e][t.key] = t, this.refresh()
}, e.prototype.checkEmpty = function () {
var t = this.Adapter.isEmptyObject(this.waypoints.horizontal),
e = this.Adapter.isEmptyObject(this.waypoints.vertical);
t && e && (this.adapter.off(".waypoints"), delete o[this.key])
}, e.prototype.createThrottledResizeHandler = function () {
function t() {
e.handleResize(), e.didResize = !1
}
var e = this;
this.adapter.on("resize.waypoints", function () {
e.didResize || (e.didResize = !0, n.requestAnimationFrame(t))
})
}, e.prototype.createThrottledScrollHandler = function () {
function t() {
e.handleScroll(), e.didScroll = !1
}
var e = this;
this.adapter.on("scroll.waypoints", function () {
(!e.didScroll || n.isTouch) && (e.didScroll = !0, n.requestAnimationFrame(t))
})
}, e.prototype.handleResize = function () {
n.Context.refreshAll()
}, e.prototype.handleScroll = function () {
var t = {},
e = {
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 i in e) {
var o = e[i],
n = o.newScroll > o.oldScroll,
r = n ? o.forward : o.backward;
for (var s in this.waypoints[i]) {
var a = this.waypoints[i][s],
l = o.oldScroll < a.triggerPoint,
h = o.newScroll >= a.triggerPoint,
p = l && h,
u = !l && !h;
(p || u) && (a.queueTrigger(r), t[a.group.id] = a.group)
}
}
for (var c in t) t[c].flushTriggers();
this.oldScroll = {
x: e.horizontal.newScroll,
y: e.vertical.newScroll
}
}, e.prototype.innerHeight = function () {
return this.element == this.element.window ? n.viewportHeight() : this.adapter.innerHeight()
}, e.prototype.remove = function (t) {
delete this.waypoints[t.axis][t.key], this.checkEmpty()
}, e.prototype.innerWidth = function () {
return this.element == this.element.window ? n.viewportWidth() : this.adapter.innerWidth()
}, e.prototype.destroy = function () {
var t = [];
for (var e in this.waypoints)
for (var i in this.waypoints[e]) t.push(this.waypoints[e][i]);
for (var o = 0, n = t.length; n > o; o++) t[o].destroy()
}, e.prototype.refresh = function () {
var t, e = this.element == this.element.window,
i = e ? void 0 : this.adapter.offset(),
o = {};
this.handleScroll(), t = {
horizontal: {
contextOffset: e ? 0 : i.left,
contextScroll: e ? 0 : this.oldScroll.x,
contextDimension: this.innerWidth(),
oldScroll: this.oldScroll.x,
forward: "right",
backward: "left",
offsetProp: "left"
},
vertical: {
contextOffset: e ? 0 : i.top,
contextScroll: e ? 0 : this.oldScroll.y,
contextDimension: this.innerHeight(),
oldScroll: this.oldScroll.y,
forward: "down",
backward: "up",
offsetProp: "top"
}
};
for (var r in t) {
var s = t[r];
for (var a in this.waypoints[r]) {
var l, h, p, u, c, d = this.waypoints[r][a],
f = d.options.offset,
w = d.triggerPoint,
y = 0,
g = null == w;
d.element !== d.element.window && (y = d.adapter.offset()[s.offsetProp]), "function" == typeof f ? f = f.apply(d) : "string" == typeof f && (f = parseFloat(f), d.options.offset.indexOf("%") > -1 && (f = Math.ceil(s.contextDimension * f / 100))), l = s.contextScroll - s.contextOffset, d.triggerPoint = y + l - f, h = w < s.oldScroll, p = d.triggerPoint >= s.oldScroll, u = h && p, c = !h && !p, !g && u ? (d.queueTrigger(s.backward), o[d.group.id] = d.group) : !g && c ? (d.queueTrigger(s.forward), o[d.group.id] = d.group) : g && s.oldScroll >= d.triggerPoint && (d.queueTrigger(s.forward), o[d.group.id] = d.group)
}
}
return n.requestAnimationFrame(function () {
for (var t in o) o[t].flushTriggers()
}), this
}, e.findOrCreateByElement = function (t) {
return e.findByElement(t) || new e(t)
}, e.refreshAll = function () {
for (var t in o) o[t].refresh()
}, e.findByElement = function (t) {
return o[t.waypointContextKey]
}, window.onload = function () {
r && r(), e.refreshAll()
}, n.requestAnimationFrame = function (e) {
var i = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || t;
i.call(window, e)
}, n.Context = e
}(), function () {
"use strict";
function t(t, e) {
return t.triggerPoint - e.triggerPoint
}
function e(t, e) {
return e.triggerPoint - t.triggerPoint
}
function i(t) {
this.name = t.name, this.axis = t.axis, this.id = this.name + "-" + this.axis, this.waypoints = [], this.clearTriggerQueues(), o[this.axis][this.name] = this
}
var o = {
vertical: {},
horizontal: {}
},
n = window.Waypoint;
i.prototype.add = function (t) {
this.waypoints.push(t)
}, i.prototype.clearTriggerQueues = function () {
this.triggerQueues = {
up: [],
down: [],
left: [],
right: []
}
}, i.prototype.flushTriggers = function () {
for (var i in this.triggerQueues) {
var o = this.triggerQueues[i],
n = "up" === i || "left" === i;
o.sort(n ? e : t);
for (var r = 0, s = o.length; s > r; r += 1) {
var a = o[r];
(a.options.continuous || r === o.length - 1) && a.trigger([i])
}
}
this.clearTriggerQueues()
}, i.prototype.next = function (e) {
this.waypoints.sort(t);
var i = n.Adapter.inArray(e, this.waypoints),
o = i === this.waypoints.length - 1;
return o ? null : this.waypoints[i + 1]
}, i.prototype.previous = function (e) {
this.waypoints.sort(t);
var i = n.Adapter.inArray(e, this.waypoints);
return i ? this.waypoints[i - 1] : null
}, i.prototype.queueTrigger = function (t, e) {
this.triggerQueues[e].push(t)
}, i.prototype.remove = function (t) {
var e = n.Adapter.inArray(t, this.waypoints);
e > -1 && this.waypoints.splice(e, 1)
}, i.prototype.first = function () {
return this.waypoints[0]
}, i.prototype.last = function () {
return this.waypoints[this.waypoints.length - 1]
}, i.findOrCreate = function (t) {
return o[t.axis][t.name] || new i(t)
}, n.Group = i
}(), function () {
"use strict";
function t(t) {
this.$element = e(t)
}
var e = window.jQuery,
i = window.Waypoint;
e.each(["innerHeight", "innerWidth", "off", "offset", "on", "outerHeight", "outerWidth", "scrollLeft", "scrollTop"], function (e, i) {
t.prototype[i] = function () {
var t = Array.prototype.slice.call(arguments);
return this.$element[i].apply(this.$element, t)
}
}), e.each(["extend", "inArray", "isEmptyObject"], function (i, o) {
t[o] = e[o]
}), i.adapters.push({
name: "jquery",
Adapter: t
}), i.Adapter = t
}(), function () {
"use strict";
function t(t) {
return function () {
var i = [],
o = arguments[0];
return t.isFunction(arguments[0]) && (o = t.extend({}, arguments[1]), o.handler = arguments[0]), this.each(function () {
var n = t.extend({}, o, {
element: this
});
"string" == typeof n.context && (n.context = t(this).closest(n.context)[0]), i.push(new e(n))
}), i
}
}
var e = window.Waypoint;
window.jQuery && (window.jQuery.fn.waypoint = t(window.jQuery)), window.Zepto && (window.Zepto.fn.waypoint = t(window.Zepto))
}();
