vendor: 14,195 bytes, lines 1-520
1// Generated by CoffeeScript 1.6.2 2/* 3jQuery Waypoints - v2.0.3 4Copyright (c) 2011-2013 Caleb Troughton 5Dual licensed under the MIT license and GPL license. 6https://github.com/imakewebthings/jquery-waypoints/blob/master/licenses.txt 7*/ 8 9 10(function() { 11 var __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; }, 12 __slice = [].slice; 13 14 (function(root, factory) { 15 if (typeof define === 'function' && define.amd) { 16 return define('waypoints', ['jquery'], function($) { 17 return factory($, root); 18 }); 19 } else { 20 return factory(root.jQuery, root); 21 } 22 })(this, function($, window) { 23 var $w, Context, Waypoint, allWaypoints, contextCounter, contextKey, contexts, isTouch, jQMethods, methods, resizeEvent, scrollEvent, waypointCounter, waypointKey, wp, wps; 24 25 $w = $(window); 26 isTouch = __indexOf.call(window, 'ontouchstart') >= 0; 27 allWaypoints = { 28 horizontal: {}, 29 vertical: {} 30 }; 31 contextCounter = 1; 32 contexts = {}; 33 contextKey = 'waypoints-context-id'; 34 resizeEvent = 'resize.waypoints'; 35 scrollEvent = 'scroll.waypoints'; 36 waypointCounter = 1; 37 waypointKey = 'waypoints-waypoint-ids'; 38 wp = 'waypoint'; 39 wps = 'waypoints'; 40 Context = (function() { 41 function Context($element) { 42 var _this = this; 43 44 this.$element = $element; 45 this.element = $element[0]; 46 this.didResize = false; 47 this.didScroll = false; 48 this.id = 'context' + contextCounter++; 49 this.oldScroll = { 50 x: $element.scrollLeft(), 51 y: $element.scrollTop() 52 }; 53 this.waypoints = { 54 horizontal: {}, 55 vertical: {} 56 }; 57 $element.data(contextKey, this.id); 58 contexts[this.id] = this; 59 $element.bind(scrollEvent, function() { 60 var scrollHandler; 61 62 if (!(_this.didScroll || isTouch)) { 63 _this.didScroll = true; 64 scrollHandler = function() { 65 _this.doScroll(); 66 return _this.didScroll = false; 67 }; 68 return window.setTimeout(scrollHandler, $[wps].settings.scrollThrottle); 69 } 70 }); 71 $element.bind(resizeEvent, function() { 72 var resizeHandler; 73 74 if (!_this.didResize) { 75 _this.didResize = true; 76 resizeHandler = function() { 77 $[wps]('refresh'); 78 return _this.didResize = false; 79 }; 80 return window.setTimeout(resizeHandler, $[wps].settings.resizeThrottle); 81 } 82 }); 83 } 84 85 Context.prototype.doScroll = function() { 86 var axes, 87 _this = this; 88 89 axes = { 90 horizontal: { 91 newScroll: this.$element.scrollLeft(), 92 oldScroll: this.oldScroll.x, 93 forward: 'right', 94 backward: 'left' 95 }, 96 vertical: { 97 newScroll: this.$element.scrollTop(), 98 oldScroll: this.oldScroll.y, 99 forward: 'down', 100 backward: 'up' 101 } 102 }; 103 if (isTouch && (!axes.vertical.oldScroll || !axes.vertical.newScroll)) { 104 $[wps]('refresh'); 105 } 106 $.each(axes, function(aKey, axis) { 107 var direction, isForward, triggered; 108 109 triggered = []; 110 isForward = axis.newScroll > axis.oldScroll; 111 direction = isForward ? axis.forward : axis.backward; 112 $.each(_this.waypoints[aKey], function(wKey, waypoint) { 113 var _ref, _ref1; 114 115 if ((axis.oldScroll < (_ref = waypoint.offset) && _ref <= axis.newScroll)) { 116 return triggered.push(waypoint); 117 } else if ((axis.newScroll < (_ref1 = waypoint.offset) && _ref1 <= axis.oldScroll)) { 118 return triggered.push(waypoint); 119 } 120 }); 121 triggered.sort(function(a, b) { 122 return a.offset - b.offset; 123 }); 124 if (!isForward) { 125 triggered.reverse(); 126 } 127 return $.each(triggered, function(i, waypoint) { 128 if (waypoint.options.continuous || i === triggered.length - 1) { 129 return waypoint.trigger([direction]); 130 } 131 }); 132 }); 133 return this.oldScroll = { 134 x: axes.horizontal.newScroll, 135 y: axes.vertical.newScroll 136 }; 137 }; 138 139 Context.prototype.refresh = function() { 140 var axes, cOffset, isWin, 141 _this = this; 142 143 isWin = $.isWindow(this.element); 144 cOffset = this.$element.offset(); 145 this.doScroll(); 146 axes = { 147 horizontal: { 148 contextOffset: isWin ? 0 : cOffset.left, 149 contextScroll: isWin ? 0 : this.oldScroll.x, 150 contextDimension: this.$element.width(), 151 oldScroll: this.oldScroll.x, 152 forward: 'right', 153 backward: 'left', 154 offsetProp: 'left' 155 }, 156 vertical: { 157 contextOffset: isWin ? 0 : cOffset.top, 158 contextScroll: isWin ? 0 : this.oldScroll.y, 159 contextDimension: isWin ? $[wps]('viewportHeight') : this.$element.height(), 160 oldScroll: this.oldScroll.y, 161 forward: 'down', 162 backward: 'up', 163 offsetProp: 'top' 164 } 165 }; 166 return $.each(axes, function(aKey, axis) { 167 return $.each(_this.waypoints[aKey], function(i, waypoint) { 168 var adjustment, elementOffset, oldOffset, _ref, _ref1; 169 170 adjustment = waypoint.options.offset; 171 oldOffset = waypoint.offset; 172 elementOffset = $.isWindow(waypoint.element) ? 0 : waypoint.$element.offset()[axis.offsetProp]; 173 if ($.isFunction(adjustment)) { 174 adjustment = adjustment.apply(waypoint.element); 175 } else if (typeof adjustment === 'string') { 176 adjustment = parseFloat(adjustment); 177 if (waypoint.options.offset.indexOf('%') > -1) { 178 adjustment = Math.ceil(axis.contextDimension * adjustment / 100); 179 } 180 } 181 waypoint.offset = elementOffset - axis.contextOffset + axis.contextScroll - adjustment; 182 if ((waypoint.options.onlyOnScroll && (oldOffset != null)) || !waypoint.enabled) { 183 return; 184 } 185 if (oldOffset !== null && (oldOffset < (_ref = axis.oldScroll) && _ref <= waypoint.offset)) { 186 return waypoint.trigger([axis.backward]); 187 } else if (oldOffset !== null && (oldOffset > (_ref1 = axis.oldScroll) && _ref1 >= waypoint.offset)) { 188 return waypoint.trigger([axis.forward]); 189 } else if (oldOffset === null && axis.oldScroll >= waypoint.offset) { 190 return waypoint.trigger([axis.forward]); 191 } 192 }); 193 }); 194 }; 195 196 Context.prototype.checkEmpty = function() { 197 if ($.isEmptyObject(this.waypoints.horizontal) && $.isEmptyObject(this.waypoints.vertical)) { 198 this.$element.unbind([resizeEvent, scrollEvent].join(' ')); 199 return delete contexts[this.id]; 200 } 201 }; 202 203 return Context; 204 205 })(); 206 Waypoint = (function() { 207 function Waypoint($element, context, options) { 208 var idList, _ref; 209 210 options = $.extend({}, $.fn[wp].defaults, options); 211 if (options.offset === 'bottom-in-view') { 212 options.offset = function() { 213 var contextHeight; 214 215 contextHeight = $[wps]('viewportHeight'); 216 if (!$.isWindow(context.element)) { 217 contextHeight = context.$element.height(); 218 } 219 return contextHeight - $(this).outerHeight(); 220 }; 221 } 222 this.$element = $element; 223 this.element = $element[0]; 224 this.axis = options.horizontal ? 'horizontal' : 'vertical'; 225 this.callback = options.handler; 226 this.context = context; 227 this.enabled = options.enabled; 228 this.id = 'waypoints' + waypointCounter++; 229 this.offset = null; 230 this.options = options; 231 context.waypoints[this.axis][this.id] = this; 232 allWaypoints[this.axis][this.id] = this; 233 idList = (_ref = $element.data(waypointKey)) != null ? _ref : []; 234 idList.push(this.id); 235 $element.data(waypointKey, idList); 236 } 237 238 Waypoint.prototype.trigger = function(args) { 239 if (!this.enabled) { 240 return; 241 } 242 if (this.callback != null) { 243 this.callback.apply(this.element, args); 244 } 245 if (this.options.triggerOnce) { 246 return this.destroy(); 247 } 248 }; 249 250 Waypoint.prototype.disable = function() { 251 return this.enabled = false; 252 }; 253 254 Waypoint.prototype.enable = function() { 255 this.context.refresh(); 256 return this.enabled = true; 257 }; 258 259 Waypoint.prototype.destroy = function() { 260 delete allWaypoints[this.axis][this.id]; 261 delete this.context.waypoints[this.axis][this.id]; 262 return this.context.checkEmpty(); 263 }; 264 265 Waypoint.getWaypointsByElement = function(element) { 266 var all, ids; 267 268 ids = $(element).data(waypointKey); 269 if (!ids) { 270 return []; 271 } 272 all = $.extend({}, allWaypoints.horizontal, allWaypoints.vertical); 273 return $.map(ids, function(id) { 274 return all[id]; 275 }); 276 }; 277 278 return Waypoint; 279 280 })(); 281 methods = { 282 init: function(f, options) { 283 var _ref; 284 285 if (options == null) { 286 options = {}; 287 } 288 if ((_ref = options.handler) == null) { 289 options.handler = f; 290 } 291 this.each(function() { 292 var $this, context, contextElement, _ref1; 293 294 $this = $(this); 295 contextElement = (_ref1 = options.context) != null ? _ref1 : $.fn[wp].defaults.context; 296 if (!$.isWindow(contextElement)) { 297 contextElement = $this.closest(contextElement); 298 } 299 contextElement = $(contextElement); 300 context = contexts[contextElement.data(contextKey)]; 301 if (!context) { 302 context = new Context(contextElement); 303 } 304 return new Waypoint($this, context, options); 305 }); 306 $[wps]('refresh'); 307 return this; 308 }, 309 disable: function() { 310 return methods._invoke(this, 'disable'); 311 }, 312 enable: function() { 313 return methods._invoke(this, 'enable'); 314 }, 315 destroy: function() { 316 return methods._invoke(this, 'destroy'); 317 }, 318 prev: function(axis, selector) { 319 return methods._traverse.call(this, axis, selector, function(stack, index, waypoints) { 320 if (index > 0) { 321 return stack.push(waypoints[index - 1]); 322 } 323 }); 324 }, 325 next: function(axis, selector) { 326 return methods._traverse.call(this, axis, selector, function(stack, index, waypoints) { 327 if (index < waypoints.length - 1) { 328 return stack.push(waypoints[index + 1]); 329 } 330 }); 331 }, 332 _traverse: function(axis, selector, push) { 333 var stack, waypoints; 334 335 if (axis == null) { 336 axis = 'vertical'; 337 } 338 if (selector == null) { 339 selector = window; 340 } 341 waypoints = jQMethods.aggregate(selector); 342 stack = []; 343 this.each(function() { 344 var index; 345 346 index = $.inArray(this, waypoints[axis]); 347 return push(stack, index, waypoints[axis]); 348 }); 349 return this.pushStack(stack); 350 }, 351 _invoke: function($elements, method) { 352 $elements.each(function() { 353 var waypoints; 354 355 waypoints = Waypoint.getWaypointsByElement(this); 356 return $.each(waypoints, function(i, waypoint) { 357 waypoint[method](); 358 return true; 359 }); 360 }); 361 return this; 362 } 363 }; 364 $.fn[wp] = function() { 365 var args, method; 366 367 method = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : []; 368 if (methods[method]) { 369 return methods[method].apply(this, args); 370 } else if ($.isFunction(method)) { 371 return methods.init.apply(this, arguments); 372 } else if ($.isPlainObject(method)) { 373 return methods.init.apply(this, [null, method]); 374 } else if (!method) { 375 return $.error("jQuery Waypoints needs a callback function or handler option."); 376 } else { 377 return $.error("The " + method + " method does not exist in jQuery Waypoints."); 378 } 379 }; 380 $.fn[wp].defaults = { 381 context: window, 382 continuous: true, 383 enabled: true, 384 horizontal: false, 385 offset: 0, 386 triggerOnce: false 387 }; 388 jQMethods = { 389 refresh: function() { 390 return $.each(contexts, function(i, context) { 391 return context.refresh(); 392 }); 393 }, 394 viewportHeight: function() { 395 var _ref; 396 397 return (_ref = window.innerHeight) != null ? _ref : $w.height(); 398 }, 399 aggregate: function(contextSelector) { 400 var collection, waypoints, _ref; 401 402 collection = allWaypoints; 403 if (contextSelector) { 404 collection = (_ref = contexts[$(contextSelector).data(contextKey)]) != null ? _ref.waypoints : void 0; 405 } 406 if (!collection) { 407 return []; 408 } 409 waypoints = { 410 horizontal: [], 411 vertical: [] 412 }; 413 $.each(waypoints, function(axis, arr) { 414 $.each(collection[axis], function(key, waypoint) { 415 return arr.push(waypoint); 416 }); 417 arr.sort(function(a, b) { 418 return a.offset - b.offset; 419 }); 420 waypoints[axis] = $.map(arr, function(waypoint) { 421 return waypoint.element; 422 }); 423 return waypoints[axis] = $.unique(waypoints[axis]); 424 }); 425 return waypoints; 426 }, 427 above: function(contextSelector) { 428 if (contextSelector == null) { 429 contextSelector = window; 430 } 431 return jQMethods._filter(contextSelector, 'vertical', function(context, waypoint) { 432 return waypoint.offset <= context.oldScroll.y; 433 }); 434 }, 435 below: function(contextSelector) { 436 if (contextSelector == null) { 437 contextSelector = window; 438 } 439 return jQMethods._filter(contextSelector, 'vertical', function(context, waypoint) { 440 return waypoint.offset > context.oldScroll.y; 441 }); 442 }, 443 left: function(contextSelector) { 444 if (contextSelector == null) { 445 contextSelector = window; 446 } 447 return jQMethods._filter(contextSelector, 'horizontal', function(context, waypoint) { 448 return waypoint.offset <= context.oldScroll.x; 449 }); 450 }, 451 right: function(contextSelector) { 452 if (contextSelector == null) { 453 contextSelector = window; 454 } 455 return jQMethods._filter(contextSelector, 'horizontal', function(context, waypoint) { 456 return waypoint.offset > context.oldScroll.x; 457 }); 458 }, 459 enable: function() { 460 return jQMethods._invoke('enable'); 461 }, 462 disable: function() { 463 return jQMethods._invoke('disable'); 464 }, 465 destroy: function() { 466 return jQMethods._invoke('destroy'); 467 }, 468 extendFn: function(methodName, f) { 469 return methods[methodName] = f; 470 }, 471 _invoke: function(method) { 472 var waypoints; 473 474 waypoints = $.extend({}, allWaypoints.vertical, allWaypoints.horizontal); 475 return $.each(waypoints, function(key, waypoint) { 476 waypoint[method](); 477 return true; 478 }); 479 }, 480 _filter: function(selector, axis, test) { 481 var context, waypoints; 482 483 context = contexts[$(selector).data(contextKey)]; 484 if (!context) { 485 return []; 486 } 487 waypoints = []; 488 $.each(context.waypoints[axis], function(i, waypoint) { 489 if (test(context, waypoint)) { 490 return waypoints.push(waypoint); 491 } 492 }); 493 waypoints.sort(function(a, b) { 494 return a.offset - b.offset; 495 }); 496 return $.map(waypoints, function(waypoint) { 497 return waypoint.element; 498 }); 499 } 500 }; 501 $[wps] = function() { 502 var args, method; 503 504 method = arguments[0], args = 2 <= arguments.length ? __slice.call(arguments, 1) : []; 505 if (jQMethods[method]) { 506 return jQMethods[method].apply(null, args); 507 } else { 508 return jQMethods.aggregate.call(null, method); 509 } 510 }; 511 $[wps].settings = { 512 resizeThrottle: 100, 513 scrollThrottle: 30 514 }; 515 return $w.load(function() { 516 return $[wps]('refresh'); 517 }); 518 }); 519 520}).call(this);
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