1/*! 2 * imagesLoaded PACKAGED v3.0.2 3 * JavaScript is all like "You images are done yet or what?" 4 */ 5 6/*! 7 * EventEmitter v4.1.0 - git.io/ee 8 * Oliver Caldwell 9 * MIT license 10 * @preserve 11 */ 12 13(function (exports) { 14 // Place the script in strict mode 15 'use strict'; 16 17 /** 18 * Class for managing events. 19 * Can be extended to provide event functionality in other classes. 20 * 21 * @class Manages event registering and emitting. 22 */ 23 function EventEmitter() {} 24 25 // Shortcuts to improve speed and size 26 27 // Easy access to the prototype 28 var proto = EventEmitter.prototype, 29 nativeIndexOf = Array.prototype.indexOf ? true : false; 30 31 /** 32 * Finds the index of the listener for the event in it's storage array. 33 * 34 * @param {Function} listener Method to look for. 35 * @param {Function[]} listeners Array of listeners to search through. 36 * @return {Number} Index of the specified listener, -1 if not found 37 * @api private 38 */ 39 function indexOfListener(listener, listeners) { 40 // Return the index via the native method if possible 41 if (nativeIndexOf) { 42 return listeners.indexOf(listener); 43 } 44 45 // There is no native method 46 // Use a manual loop to find the index 47 var i = listeners.length; 48 while (i--) { 49 // If the listener matches, return it's index 50 if (listeners[i] === listener) { 51 return i; 52 } 53 } 54 55 // Default to returning -1 56 return -1; 57 } 58 59 /** 60 * Fetches the events object and creates one if required. 61 * 62 * @return {Object} The events storage object. 63 * @api private 64 */ 65 proto._getEvents = function () { 66 return this._events || (this._events = {}); 67 }; 68 69 /** 70 * Returns the listener array for the specified event. 71 * Will initialise the event object and listener arrays if required. 72 * Will return an object if you use a regex search. The object contains keys for each matched event. So /ba[rz]/ might return an object c
72ontaining bar and baz. But only if you have either defined them with defineEvent or added some listeners to them. 73 * Each property in the object response is an array of listener functions. 74 * 75 * @param {String|RegExp} evt Name of the event to return the listeners from. 76 * @return {Function[]|Object} All listener functions for the event. 77 */ 78 proto.getListeners = function (evt) { 79 // Create a shortcut to the storage object 80 // Initialise it if it does not exists yet 81 var events = this._getEvents(), 82 response, 83 key; 84 85 // Return a concatenated array of all matching events if 86 // the selector is a regular expression. 87 if (typeof evt === 'object') { 88 response = {}; 89 for (key in events) { 90 if (events.hasOwnProperty(key) && evt.test(key)) { 91 response[key] = events[key]; 92 } 93 } 94 } 95 else { 96 response = events[evt] || (events[evt] = []); 97 } 98 99 return response; 100 }; 101 102 /** 103 * Fetches the requested listeners via getListeners but will always return the results inside an object. This is mainly for internal use but others may find it useful. 104 * 105 * @param {String|RegExp} evt Name of the event to return the listeners from. 106 * @return {Object} All listener functions for an event in an object. 107 */ 108 proto.getListenersAsObject = function (evt) { 109 var listeners = this.getListeners(evt), 110 response; 111 112 if (listeners instanceof Array) { 113 response = {}; 114 response[evt] = listeners; 115 } 116 117 return response || listeners; 118 }; 119 120 /** 121 * Adds a listener function to the specified event. 122 * The listener will not be added if it is a duplicate. 123 * If the listener returns true then it will be removed after it is called. 124 * If you pass a regular expression as the event name then the listener will be added to all events that match it. 125 * 126 * @param {String|RegExp} evt Name of the event to attach the listener to. 127 * @param {Function} listener Method to be called when the event is emitted. If the function returns true then it will be removed after calling. 128 * @return {Object} Current instance of EventEmitter for chaining. 129 */ 130 proto.addListener = function (evt, listener) { 131 var listeners = this.getListenersAsObject(evt), 132 key; 133 134 for (key in listeners) { 135 if (listeners.hasOwnProperty(key) && 136 indexOfListener(listener, listeners[key]) === -1) { 137 listeners[key].push(listener); 138 } 139 } 140 141 // Return the instance of EventEmitter to allow chaining 142 return this; 143 }; 144 145 /** 146 * Alias of addListener 147 */ 148 proto.on = proto.addListener; 149 150 /** 151 * Defines an event name. This is required if you want to use a regex to add a listener to multiple events at once. If you don't do this then how do you expect it to know what event to add to? Should it just add to every possible match for a regex? No. That is scary and bad. 152 * You need to tell it what event names should be matched by a regex. 153 * 154 * @param {String} evt Name of the event to create. 155 * @return {Object} Current instance of EventEmitter for chaining. 156 */ 157 proto.defineEvent = function (evt) { 158 this.getListeners(evt); 159 return this; 160 }; 161 162 /** 163 * Uses defineEvent to define multiple events. 164 * 165 * @param {String[]} evts An array of event names to define. 166 * @return {Object} Current instance of EventEmitter for chaining. 167 */ 168 proto.defineEvents = function (evts) 169 { 170 for (var i = 0; i < evts.length; i += 1) { 171 this.defineEvent(evts[i]); 172 } 173 return this; 174 }; 175 176 /** 177 * Removes a listener function from the specified event. 178 * When passed a regular expression as the event name, it will remove the listener from all events that match it. 179 * 180 * @param {String|RegExp} evt Name of the event to remove the listener from. 181 * @param {Function} listener Method to remove from the event. 182 * @return {Object} Current instance of EventEmitter for chaining. 183 */ 184 proto.removeListener = function (evt, listener) { 185 var listeners = this.getListenersAsObject(evt), 186 index, 187 key; 188 189 for (key in listeners) { 190 if (listeners.hasOwnProperty(key)) { 191 index = indexOfListener(listener, listeners[key]); 192 193 if (index !== -1) { 194 listeners[key].splice(index, 1); 195 } 196 } 197 } 198 199 // Return the instance of EventEmitter to allow chaining 200 return this; 201 }; 202 203 /** 204 * Alias of removeListener 205 */ 206 proto.off = proto.removeListener; 207 208 /** 209 * Adds listeners in bulk using the manipulateListeners method. 210 * If you pass an object as the second argument you can add to multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. You can also pass it an event name and an array of listeners to be added. 211 * You can also pass it a regular expression to add the array of listeners to all events that match it. 212 * Yeah, this function does quite a bit. That's probably a bad thing. 213 * 214 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add to multiple events at once. 215 * @param {Function[]} [listeners] An optional array of listener functions to add. 216 * @return {Object} Current instance of EventEmitter for chaining. 217 */ 218 proto.addListeners = function (evt, listeners) { 219 // Pass through to manipulateListeners 220 return this.manipulateListeners(false, evt, listeners); 221 }; 222 223 /** 224 * Removes listeners in bulk using the manipulateListeners method. 225 * If you pass an object as the second argument you can remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. 226 * You can also pass it an event name and an array of listeners to be removed. 227 * You can also pass it a regular expression to remove the listeners from all events that match it. 228 * 229 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to remove from multiple events at once. 230 * @param {Function[]} [listeners] An optional array of listener functions to remove. 231 * @return {Object} Current instance of EventEmitter for chaining. 232 */ 233 proto.removeListeners = function (evt, listeners) { 234 // Pass through to manipulateListeners 235 return this.manipulateListeners(true, evt, listeners); 236 }; 237 238 /** 239 * Edits listeners in bulk. The addListeners and removeListeners methods both use this to do their job. You should really use those instead, this is a little lower level. 240 * The first argument will determine if the listeners are removed (true) or added (false). 241 * If you pass an object as the second argument you can add/remove from multiple events at once. The object should contain key value pairs of events and listeners or listener arrays. 242 * You can also pass it an event name and an array of listeners to be added/removed. 243 * You can also pass it a regular expression to manipulate the listeners of all events that match it. 244 * 245 * @param {Boolean} remove True if you want to remove listeners, false if you want to add. 246 * @param {String|Object|RegExp} evt An event name if you will pass an array of listeners next. An object if you wish to add/remove from multiple events at once. 247 * @param {Function[]} [listeners] An optional array of listener functions to add/remove. 248 * @return {Object} Current instance of EventEmitter for chaining. 249 */ 250 proto.manipulateListeners = function (remove, evt, listeners) { 251 // Initialise any required variables 252 var i, 253 value, 254 single = remove ? this.removeListener : this.addListener, 255 multiple = remove ? this.removeListeners : this.addListeners; 256 257 // If evt is an object then pass each of it's properties to this method 258 if (typeof evt === 'object' && !(evt instanceof RegExp)) { 259 for (i in evt) { 260 if (evt.hasOwnProperty(i) && (value = evt[i])) { 261 // Pass the single listener straight through to the singular method 262 if (typeof value === 'function') { 263 single.call(this, i, value); 264 } 265 else { 266 // Otherwise pass back to the multiple function 267 multiple.call(this, i, value); 268 } 269 } 270 } 271 } 272 else { 273 // So evt must be a string 274 // And listeners must be an array of listeners 275 // Loop over it and pass each one to the multiple method 276 i = listeners.length; 277 while (i--) { 278 single.call(this, evt, listeners[i]); 279 } 280 } 281 282 // Return the instance of EventEmitter to allow chaining 283 return this; 284 }; 285 286 /** 287 * Removes all listeners from a specified event. 288 * If you do not specify an event then all listeners will be removed. 289 * That means every event will be emptied. 290 * You can also pass a regex to remove all events that match it. 291 * 292 * @param {String|RegExp} [evt] Optional name of the event to remove all listeners for. Will remove from every event if not passed. 293 * @return {Object} Current instance of EventEmitter for chaining. 294 */ 295 proto.removeEvent = function (evt) { 296 var type = typeof evt, 297 events = this._getEvents(), 298 key; 299 300 // Remove different things depending on the state of evt 301 if (type === 'string') { 302 // Remove all listeners for the specified event 303 delete events[evt]; 304 } 305 else if (type === 'object') { 306 // Remove all events matching the regex. 307 for (key in events) { 308 if (events.hasOwnProperty(key) && evt.test(key)) { 309 delete events[key]; 310 } 311 } 312 } 313 else { 314 // Remove all listeners in all events 315 delete this._events; 316 } 317 318 // Return the instance of EventEmitter to allow chaining 319 return this; 320 }; 321 322 /** 323 * Emits an event of your choice. 324 * When emitted, every listener attached to that event will be executed. 325 * If you pass the optional argument array then those arguments will be passed to every listener upon execution. 326 * Because it uses `apply`, your array of arguments will be passed as if you wrote them out separately.
327 * So they will not arrive within the array on the other side, they will be separate. 328 * You can also pass a regular expression to emit to all events that match it. 329 * 330 * @param {String|RegExp} evt Name of the event to emit and execute listeners for. 331 * @param {Array} [args] Optional array of arguments to be passed to each listener. 332 * @return {Object} Current instance of EventEmitter for chaining. 333 */ 334 proto.emitEvent = function (evt, args) { 335 var listeners = this.getListenersAsObject(evt), 336 i, 337 key, 338 response; 339 340 for (key in listeners) { 341 if (listeners.hasOwnProperty(key)) { 342 i = listeners[key].length; 343 344 while (i--) { 345 // If the listener returns true then it shall be removed from the event 346 // The function is executed either with a basic call or an apply if there is an args array 347 response = args ? listeners[key][i].apply(null, args) : listeners[key][i](); 348 if (response === true) { 349 this.removeListener(evt, listeners[key][i]); 350 } 351 } 352 } 353 } 354 355 // Return the instance of EventEmitter to allow chaining 356 return this; 357 }; 358 359 /** 360 * Alias of emitEvent 361 */ 362 proto.trigger = proto.emitEvent; 363 364 /** 365 * Subtly different from emitEvent in that it will pass its arguments on to the listeners, as opposed to taking a single array of arguments to pass on. 366 * As with emitEvent, you can pass a regex in place of the event name to emit to all events that match it. 367 * 368 * @param {String|RegExp} evt Name of the event to emit and execute listeners for. 369 * @param {...*} Optional additional arguments to be passed to each listener. 370 * @return {Object} Current instance of EventEmitter for chaining. 371 */ 372 proto.emit = function (evt) { 373 var args = Array.prototype.slice.call(arguments, 1); 374 return this.emitEvent(evt, args); 375 }; 376 377 // Expose the class either via AMD or the global object 378 if (typeof define === 'function' && define.amd) { 379 define(function () { 380 return EventEmitter; 381 }); 382 } 383 else { 384 exports.EventEmitter = EventEmitter; 385 } 386}(this)); 387/*! 388 * eventie v1.0.3 389 * event binding helper 390 * eventie.bind( elem, 'click', myFn ) 391 * eventie.unbind( elem, 'click', myFn ) 392 */ 393 394/*jshint browser: true, undef: true, unused: true */ 395/*global define: false */ 396 397( function( window ) { 398 399'use strict'; 400 401var docElem = document.documentElement; 402 403var bind = function() {}; 404 405if ( docElem.addEventListener ) { 406 bind = function( obj, type, fn ) { 407 obj.addEventListener( type, fn, false ); 408 }; 409} else if ( docElem.attachEvent ) { 410 bind = function( obj, type, fn ) { 411 obj[ type + fn ] = fn.handleEvent ? 412 function() { 413 var event = window.event; 414 // add event.target 415 event.target = event.target || event.srcElement; 416 fn.handleEvent.call( fn, event ); 417 } : 418 function() { 419 var event = window.event; 420 // add event.target 421 event.target = event.target || event.srcElement; 422 fn.call( obj, event ); 423 }; 424 obj.attachEvent( "on" + type, obj[ type + fn ] ); 425 }; 426} 427 428var unbind = function() {}; 429 430if ( docElem.removeEventListener ) { 431 unbind = function( obj, type, fn ) { 432 obj.removeEventListener( type, fn, false ); 433 }; 434} else if ( docElem.detachEvent ) { 435 unbind = function( obj, type, fn ) { 436 obj.detachEvent( "on" + type, obj[ type + fn ] ); 437 try { 438 delete obj[ type + fn ]; 439 } catch ( err ) { 440 // can't delete window object properties 441 obj[ type + fn ] = undefined; 442 } 443 }; 444} 445 446var eventie = { 447 bind: bind, 448 unbind: unbind 449}; 450 451// transport 452if ( typeof define === 'function' && define.amd ) { 453 // AMD 454 define( eventie ); 455} else { 456 // browser global 457 window.eventie = eventie; 458} 459 460})( this ); 461 462/*! 463 * imagesLoaded v3.0.2 464 * JavaScript is all like "You images are done yet or what?" 465 */ 466 467( function( window ) { 468 469'use strict'; 470 471var $ = window.jQuery; 472var console = window.console; 473var hasConsole = typeof console !== 'undefined'; 474 475// -------------------------- helpers -------------------------- // 476 477// extend objects 478function extend( a, b ) { 479 for ( var prop in b ) { 480 a[ prop ] = b[ prop ]; 481 } 482 return a; 483} 484 485var objToString = Object.prototype.toString; 486function isArray( obj ) { 487 return objToString.call( obj ) === '[object Array]'; 488} 489 490// turn element or nodeList into an array 491function makeArray( obj ) { 492 var ary = []; 493 if ( isArray( obj ) ) { 494 // use object if already an array 495 ary = obj; 496 } else if ( typeof obj.length === 'number' ) { 497 // convert nodeList to array 498 for ( var i=0, len = obj.length; i < len; i++ ) { 499 ary.push( obj[i] ); 500 } 501 } else { 502 // array of single index 503 ary.push( obj ); 504 } 505 return ary; 506} 507 508// -------------------------- -------------------------- // 509 510function defineImagesLoaded( EventEmitter, eventie ) { 511 512 /** 513 * @param {Array, Element, NodeList, String} elem 514 * @param {Object or Function} options - if function, use as callback 515 * @param {Function} onAlways - callback function 516 */ 517 function ImagesLoaded( elem, options, onAlways ) { 518 // coerce ImagesLoaded() without new, to be new ImagesLoaded() 519 if ( !( this instanceof ImagesLoaded ) ) { 520 return new ImagesLoaded( elem, options ); 521 } 522 // use elem as selector string 523 if ( typeof elem === 'string' ) { 524 elem = document.querySelectorAll( elem ); 525 } 526 527 this.elements = makeArray( elem ); 528 this.options = extend( {}, this.options ); 529 530 if ( typeof options === 'function' ) { 531 onAlways = options; 532 } else { 533 extend( this.options, options ); 534 } 535 536 if ( onAlways ) { 537 this.on( 'always', onAlways ); 538 } 539 540 this.getImages(); 541 542 if ( $ ) { 543 // add jQuery Deferred object 544 this.jqDeferred = new $.Deferred(); 545 } 546 547 // HACK check async to allow time to bind listeners 548 var _this = this; 549 setTimeout( function() { 550 _this.check(); 551 }); 552 } 553 554 ImagesLoaded.prototype = new EventEmitter(); 555 556 ImagesLoaded.prototype.options = {}; 557 558 ImagesLoaded.prototype.getImages = function() { 559 this.images = []; 560 561 // filter & find items if we have an item selector 562 for ( var i=0, len = this.elements.length; i < len; i++ ) { 563 var elem = this.elements[i]; 564 // filter siblings 565 if ( elem.nodeName === 'IMG' ) { 566 this.addImage( elem ); 567 } 568 // find children 569 var childElems = elem.querySelectorAll('img'); 570 // concat childElems to filterFound array 571 for ( var j=0, jLen = childElems.length; j < jLen; j++ ) { 572 var img = childElems[j]; 573 this.addImage( img ); 574 } 575 } 576 }; 577 578 /** 579 * @param {Image} img 580 */ 581 ImagesLoaded.prototype.addImage = function( img ) { 582 var loadingImage = new LoadingImage( img ); 583 this.images.push( loadingImage ); 584 }; 585
586 ImagesLoaded.prototype.check = function() { 587 var _this = this; 588 var checkedCount = 0; 589 var length = this.images.length; 590 this.hasAnyBroken = false; 591 // complete if no images 592 if ( !length ) { 593 this.complete(); 594 return; 595 } 596 597 function onConfirm( image, message ) { 598 if ( _this.options.debug && hasConsole ) { 599 console.log( 'confirm', image, message ); 600 } 601 602 _this.progress( image ); 603 checkedCount++; 604 if ( checkedCount === length ) { 605 _this.complete(); 606 } 607 return true; // bind once 608 } 609 610 for ( var i=0; i < length; i++ ) { 611 var loadingImage = this.images[i]; 612 loadingImage.on( 'confirm', onConfirm ); 613 loadingImage.check(); 614 } 615 }; 616 617 ImagesLoaded.prototype.progress = function( image ) { 618 this.hasAnyBroken = this.hasAnyBroken || !image.isLoaded; 619 this.emit( 'progress', this, image ); 620 if ( this.jqDeferred ) { 621 this.jqDeferred.notify( this, image ); 622 } 623 }; 624 625 ImagesLoaded.prototype.complete = function() { 626 var eventName = this.hasAnyBroken ? 'fail' : 'done'; 627 this.isComplete = true; 628 this.emit( eventName, this ); 629 this.emit( 'always', this ); 630 if ( this.jqDeferred ) { 631 var jqMethod = this.hasAnyBroken ? 'reject' : 'resolve'; 632 this.jqDeferred[ jqMethod ]( this ); 633 } 634 }; 635 636 // -------------------------- jquery -------------------------- // 637 638 if ( $ ) { 639 $.fn.imagesLoaded = function( options, callback ) { 640 var instance = new ImagesLoaded( this, options, callback ); 641 return instance.jqDeferred.promise( $(this) ); 642 }; 643 } 644 645 646 // -------------------------- -------------------------- // 647 648 var cache = {}; 649 650 function LoadingImage( img ) { 651 this.img = img; 652 } 653 654 LoadingImage.prototype = new EventEmitter(); 655 656 LoadingImage.prototype.check = function() { 657 // first check cached any previous images that have same src 658 var cached = cache[ this.img.src ]; 659 if ( cached ) { 660 this.useCached( cached ); 661 return; 662 } 663 // add this to cache 664 cache[ this.img.src ] = this; 665 666 // If complete is true and browser supports natural sizes, 667 // try to check for image status manually. 668 if ( this.img.complete && this.img.naturalWidth !== undefined ) { 669 // report based on naturalWidth 670 this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' ); 671 return; 672 } 673 674 // If none of the checks above matched, simulate loading on detached element. 675 var proxyImage = this.proxyImage = new Image(); 676 eventie.bind( proxyImage, 'load', this ); 677 eventie.bind( proxyImage, 'error', this ); 678 proxyImage.src = this.img.src; 679 }; 680 681 LoadingImage.prototype.useCached = function( cached ) { 682 if ( cached.isConfirmed ) { 683 this.confirm( cached.isLoaded, 'cached was confirmed' ); 684 } else { 685 var _this = this; 686 cached.on( 'confirm', function( image ) { 687 _this.confirm( image.isLoaded, 'cache emitted confirmed' ); 688 return true; // bind once 689 }); 690 } 691 }; 692 693 LoadingImage.prototype.confirm = function( isLoaded, message ) { 694 this.isConfirmed = true; 695 this.isLoaded = isLoaded; 696 this.emit( 'confirm', this, message ); 697 }; 698 699 // trigger specified handler for event type 700 LoadingImage.prototype.handleEvent = function( event ) { 701 var method = 'on' + event.type; 702 if ( this[ method ] ) { 703 this[ method ]( event ); 704 } 705 }; 706 707 LoadingImage.prototype.onload = function() { 708 this.confirm( true, 'onload' ); 709 this.unbindProxyEvents(); 710 }; 711 712 LoadingImage.prototype.onerror = function() { 713 this.confirm( false, 'onerror' ); 714 this.unbindProxyEvents(); 715 }; 716 717 LoadingImage.prototype.unbindProxyEvents = function() { 718 eventie.unbind( this.proxyImage, 'load', this ); 719 eventie.unbind( this.proxyImage, 'error', this ); 720 }; 721 722 // ----- ----- // 723 724 return ImagesLoaded; 725} 726 727// -------------------------- transport -------------------------- // 728 729if ( typeof define === 'function' && define.amd ) { 730 // AMD 731 define( [ 732 'eventEmitter', 733 'eventie' 734 ], 735 defineImagesLoaded ); 736} else { 737 // browser global 738 window.imagesLoaded = defineImagesLoaded( 739 window.EventEmitter, 740 window.eventie 741 ); 742} 743 744})( window );
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