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gwt.material.design.addins.client.masonry.resources.js.imageloaded.js Maven / Gradle / Ivy
/*!
* imagesLoaded PACKAGED v4.1.4
* JavaScript is all like "You images are done yet or what?"
* MIT License
*/
/**
* EvEmitter v1.1.0
* Lil' event emitter
* MIT License
*/
/* jshint unused: true, undef: true, strict: true */
( function( global, factory ) {
// universal module definition
/* jshint strict: false */ /* globals define, module, window */
if ( typeof define == 'function' && define.amd ) {
// AMD - RequireJS
define( 'ev-emitter/ev-emitter',factory );
} else if ( typeof module == 'object' && module.exports ) {
// CommonJS - Browserify, Webpack
module.exports = factory();
} else {
// Browser globals
global.EvEmitter = factory();
}
}( typeof window != 'undefined' ? window : this, function() {
function EvEmitter() {}
var proto = EvEmitter.prototype;
proto.on = function( eventName, listener ) {
if ( !eventName || !listener ) {
return;
}
// set events hash
var events = this._events = this._events || {};
// set listeners array
var listeners = events[ eventName ] = events[ eventName ] || [];
// only add once
if ( listeners.indexOf( listener ) == -1 ) {
listeners.push( listener );
}
return this;
};
proto.once = function( eventName, listener ) {
if ( !eventName || !listener ) {
return;
}
// add event
this.on( eventName, listener );
// set once flag
// set onceEvents hash
var onceEvents = this._onceEvents = this._onceEvents || {};
// set onceListeners object
var onceListeners = onceEvents[ eventName ] = onceEvents[ eventName ] || {};
// set flag
onceListeners[ listener ] = true;
return this;
};
proto.off = function( eventName, listener ) {
var listeners = this._events && this._events[ eventName ];
if ( !listeners || !listeners.length ) {
return;
}
var index = listeners.indexOf( listener );
if ( index != -1 ) {
listeners.splice( index, 1 );
}
return this;
};
proto.emitEvent = function( eventName, args ) {
var listeners = this._events && this._events[ eventName ];
if ( !listeners || !listeners.length ) {
return;
}
// copy over to avoid interference if .off() in listener
listeners = listeners.slice(0);
args = args || [];
// once stuff
var onceListeners = this._onceEvents && this._onceEvents[ eventName ];
for ( var i=0; i < listeners.length; i++ ) {
var listener = listeners[i]
var isOnce = onceListeners && onceListeners[ listener ];
if ( isOnce ) {
// remove listener
// remove before trigger to prevent recursion
this.off( eventName, listener );
// unset once flag
delete onceListeners[ listener ];
}
// trigger listener
listener.apply( this, args );
}
return this;
};
proto.allOff = function() {
delete this._events;
delete this._onceEvents;
};
return EvEmitter;
}));
/*!
* imagesLoaded v4.1.4
* JavaScript is all like "You images are done yet or what?"
* MIT License
*/
( function( window, factory ) { 'use strict';
// universal module definition
/*global define: false, module: false, require: false */
if ( typeof define == 'function' && define.amd ) {
// AMD
define( [
'ev-emitter/ev-emitter'
], function( EvEmitter ) {
return factory( window, EvEmitter );
});
} else if ( typeof module == 'object' && module.exports ) {
// CommonJS
module.exports = factory(
window,
require('ev-emitter')
);
} else {
// browser global
window.imagesLoaded = factory(
window,
window.EvEmitter
);
}
})( typeof window !== 'undefined' ? window : this,
// -------------------------- factory -------------------------- //
function factory( window, EvEmitter ) {
var $ = window.jQuery;
var console = window.console;
// -------------------------- helpers -------------------------- //
// extend objects
function extend( a, b ) {
for ( var prop in b ) {
a[ prop ] = b[ prop ];
}
return a;
}
var arraySlice = Array.prototype.slice;
// turn element or nodeList into an array
function makeArray( obj ) {
if ( Array.isArray( obj ) ) {
// use object if already an array
return obj;
}
var isArrayLike = typeof obj == 'object' && typeof obj.length == 'number';
if ( isArrayLike ) {
// convert nodeList to array
return arraySlice.call( obj );
}
// array of single index
return [ obj ];
}
// -------------------------- imagesLoaded -------------------------- //
/**
* @param {Array, Element, NodeList, String} elem
* @param {Object or Function} options - if function, use as callback
* @param {Function} onAlways - callback function
*/
function ImagesLoaded( elem, options, onAlways ) {
// coerce ImagesLoaded() without new, to be new ImagesLoaded()
if ( !( this instanceof ImagesLoaded ) ) {
return new ImagesLoaded( elem, options, onAlways );
}
// use elem as selector string
var queryElem = elem;
if ( typeof elem == 'string' ) {
queryElem = document.querySelectorAll( elem );
}
// bail if bad element
if ( !queryElem ) {
console.error( 'Bad element for imagesLoaded ' + ( queryElem || elem ) );
return;
}
this.elements = makeArray( queryElem );
this.options = extend( {}, this.options );
// shift arguments if no options set
if ( typeof options == 'function' ) {
onAlways = options;
} else {
extend( this.options, options );
}
if ( onAlways ) {
this.on( 'always', onAlways );
}
this.getImages();
if ( $ ) {
// add jQuery Deferred object
this.jqDeferred = new $.Deferred();
}
// HACK check async to allow time to bind listeners
setTimeout( this.check.bind( this ) );
}
ImagesLoaded.prototype = Object.create( EvEmitter.prototype );
ImagesLoaded.prototype.options = {};
ImagesLoaded.prototype.getImages = function() {
this.images = [];
// filter & find items if we have an item selector
this.elements.forEach( this.addElementImages, this );
};
/**
* @param {Node} element
*/
ImagesLoaded.prototype.addElementImages = function( elem ) {
// filter siblings
if ( elem.nodeName == 'IMG' ) {
this.addImage( elem );
}
// get background image on element
if ( this.options.background === true ) {
this.addElementBackgroundImages( elem );
}
// find children
// no non-element nodes, #143
var nodeType = elem.nodeType;
if ( !nodeType || !elementNodeTypes[ nodeType ] ) {
return;
}
var childImgs = elem.querySelectorAll('img');
// concat childElems to filterFound array
for ( var i=0; i < childImgs.length; i++ ) {
var img = childImgs[i];
this.addImage( img );
}
// get child background images
if ( typeof this.options.background == 'string' ) {
var children = elem.querySelectorAll( this.options.background );
for ( i=0; i < children.length; i++ ) {
var child = children[i];
this.addElementBackgroundImages( child );
}
}
};
var elementNodeTypes = {
1: true,
9: true,
11: true
};
ImagesLoaded.prototype.addElementBackgroundImages = function( elem ) {
var style = getComputedStyle( elem );
if ( !style ) {
// Firefox returns null if in a hidden iframe https://bugzil.la/548397
return;
}
// get url inside url("...")
var reURL = /url\((['"])?(.*?)\1\)/gi;
var matches = reURL.exec( style.backgroundImage );
while ( matches !== null ) {
var url = matches && matches[2];
if ( url ) {
this.addBackground( url, elem );
}
matches = reURL.exec( style.backgroundImage );
}
};
/**
* @param {Image} img
*/
ImagesLoaded.prototype.addImage = function( img ) {
var loadingImage = new LoadingImage( img );
this.images.push( loadingImage );
};
ImagesLoaded.prototype.addBackground = function( url, elem ) {
var background = new Background( url, elem );
this.images.push( background );
};
ImagesLoaded.prototype.check = function() {
var _this = this;
this.progressedCount = 0;
this.hasAnyBroken = false;
// complete if no images
if ( !this.images.length ) {
this.complete();
return;
}
function onProgress( image, elem, message ) {
// HACK - Chrome triggers event before object properties have changed. #83
setTimeout( function() {
_this.progress( image, elem, message );
});
}
this.images.forEach( function( loadingImage ) {
loadingImage.once( 'progress', onProgress );
loadingImage.check();
});
};
ImagesLoaded.prototype.progress = function( image, elem, message ) {
this.progressedCount++;
this.hasAnyBroken = this.hasAnyBroken || !image.isLoaded;
// progress event
this.emitEvent( 'progress', [ this, image, elem ] );
if ( this.jqDeferred && this.jqDeferred.notify ) {
this.jqDeferred.notify( this, image );
}
// check if completed
if ( this.progressedCount == this.images.length ) {
this.complete();
}
if ( this.options.debug && console ) {
console.log( 'progress: ' + message, image, elem );
}
};
ImagesLoaded.prototype.complete = function() {
var eventName = this.hasAnyBroken ? 'fail' : 'done';
this.isComplete = true;
this.emitEvent( eventName, [ this ] );
this.emitEvent( 'always', [ this ] );
if ( this.jqDeferred ) {
var jqMethod = this.hasAnyBroken ? 'reject' : 'resolve';
this.jqDeferred[ jqMethod ]( this );
}
};
// -------------------------- -------------------------- //
function LoadingImage( img ) {
this.img = img;
}
LoadingImage.prototype = Object.create( EvEmitter.prototype );
LoadingImage.prototype.check = function() {
// If complete is true and browser supports natural sizes,
// try to check for image status manually.
var isComplete = this.getIsImageComplete();
if ( isComplete ) {
// report based on naturalWidth
this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
return;
}
// If none of the checks above matched, simulate loading on detached element.
this.proxyImage = new Image();
this.proxyImage.addEventListener( 'load', this );
this.proxyImage.addEventListener( 'error', this );
// bind to image as well for Firefox. #191
this.img.addEventListener( 'load', this );
this.img.addEventListener( 'error', this );
this.proxyImage.src = this.img.src;
};
LoadingImage.prototype.getIsImageComplete = function() {
// check for non-zero, non-undefined naturalWidth
// fixes Safari+InfiniteScroll+Masonry bug infinite-scroll#671
return this.img.complete && this.img.naturalWidth;
};
LoadingImage.prototype.confirm = function( isLoaded, message ) {
this.isLoaded = isLoaded;
this.emitEvent( 'progress', [ this, this.img, message ] );
};
// ----- events ----- //
// trigger specified handler for event type
LoadingImage.prototype.handleEvent = function( event ) {
var method = 'on' + event.type;
if ( this[ method ] ) {
this[ method ]( event );
}
};
LoadingImage.prototype.onload = function() {
this.confirm( true, 'onload' );
this.unbindEvents();
};
LoadingImage.prototype.onerror = function() {
this.confirm( false, 'onerror' );
this.unbindEvents();
};
LoadingImage.prototype.unbindEvents = function() {
this.proxyImage.removeEventListener( 'load', this );
this.proxyImage.removeEventListener( 'error', this );
this.img.removeEventListener( 'load', this );
this.img.removeEventListener( 'error', this );
};
// -------------------------- Background -------------------------- //
function Background( url, element ) {
this.url = url;
this.element = element;
this.img = new Image();
}
// inherit LoadingImage prototype
Background.prototype = Object.create( LoadingImage.prototype );
Background.prototype.check = function() {
this.img.addEventListener( 'load', this );
this.img.addEventListener( 'error', this );
this.img.src = this.url;
// check if image is already complete
var isComplete = this.getIsImageComplete();
if ( isComplete ) {
this.confirm( this.img.naturalWidth !== 0, 'naturalWidth' );
this.unbindEvents();
}
};
Background.prototype.unbindEvents = function() {
this.img.removeEventListener( 'load', this );
this.img.removeEventListener( 'error', this );
};
Background.prototype.confirm = function( isLoaded, message ) {
this.isLoaded = isLoaded;
this.emitEvent( 'progress', [ this, this.element, message ] );
};
// -------------------------- jQuery -------------------------- //
ImagesLoaded.makeJQueryPlugin = function( jQuery ) {
jQuery = jQuery || window.jQuery;
if ( !jQuery ) {
return;
}
// set local variable
$ = jQuery;
// $().imagesLoaded()
$.fn.imagesLoaded = function( options, callback ) {
var instance = new ImagesLoaded( this, options, callback );
return instance.jqDeferred.promise( $(this) );
};
};
// try making plugin
ImagesLoaded.makeJQueryPlugin();
// -------------------------- -------------------------- //
return ImagesLoaded;
});
