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?? Editing: owl.lazyload.js

/**
 * Lazy Plugin
 * @version 2.1.0
 * @author Bartosz Wojciechowski
 * @author David Deutsch
 * @license The MIT License (MIT)
 */
;(function($, window, document, undefined) {

/**
	 * Creates the lazy plugin.
	 * @class The Lazy Plugin
	 * @param {Owl} carousel - The Owl Carousel
	 */
	var Lazy = function(carousel) {

/**
		 * Reference to the core.
		 * @protected
		 * @type {Owl}
		 */
		this._core = carousel;

/**
		 * Already loaded items.
		 * @protected
		 * @type {Array.<jQuery>}
		 */
		this._loaded = [];

/**
		 * Event handlers.
		 * @protected
		 * @type {Object}
		 */
		this._handlers = {
			'initialized.owl.carousel change.owl.carousel resized.owl.carousel': $.proxy(function(e) {
				if (!e.namespace) {
					return;
				}

if (!this._core.settings || !this._core.settings.lazyLoad) {
					return;
				}

if ((e.property && e.property.name == 'position') || e.type == 'initialized') {
					var settings = this._core.settings,
						n = (settings.center && Math.ceil(settings.items / 2) || settings.items),
						i = ((settings.center && n * -1) || 0),
						position = (e.property && e.property.value !== undefined ? e.property.value : this._core.current()) + i,
						clones = this._core.clones().length,
						load = $.proxy(function(i, v) { this.load(v) }, this);

while (i++ < n) {
						this.load(clones / 2 + this._core.relative(position));
						clones && $.each(this._core.clones(this._core.relative(position)), load);
						position++;
					}
				}
			}, this)
		};

// set the default options
		this._core.options = $.extend({}, Lazy.Defaults, this._core.options);

// register event handler
		this._core.$element.on(this._handlers);
	};

/**
	 * Default options.
	 * @public
	 */
	Lazy.Defaults = {
		lazyLoad: false
	};

/**
	 * Loads all resources of an item at the specified position.
	 * @param {Number} position - The absolute position of the item.
	 * @protected
	 */
	Lazy.prototype.load = function(position) {
		var $item = this._core.$stage.children().eq(position),
			$elements = $item && $item.find('.owl-lazy');

if (!$elements || $.inArray($item.get(0), this._loaded) > -1) {
			return;
		}

$elements.each($.proxy(function(index, element) {
			var $element = $(element), image,
				url = (window.devicePixelRatio > 1 && $element.attr('data-src-retina')) || $element.attr('data-src');

this._core.trigger('load', { element: $element, url: url }, 'lazy');

if ($element.is('img')) {
				$element.one('load.owl.lazy', $.proxy(function() {
					$element.css('opacity', 1);
					this._core.trigger('loaded', { element: $element, url: url }, 'lazy');
				}, this)).attr('src', url);
			} else {
				image = new Image();
				image.onload = $.proxy(function() {
					$element.css({
						'background-image': 'url(' + url + ')',
						'opacity': '1'
					});
					this._core.trigger('loaded', { element: $element, url: url }, 'lazy');
				}, this);
				image.src = url;
			}
		}, this));

this._loaded.push($item.get(0));
	};

/**
	 * Destroys the plugin.
	 * @public
	 */
	Lazy.prototype.destroy = function() {
		var handler, property;

for (handler in this.handlers) {
			this._core.$element.off(handler, this.handlers[handler]);
		}
		for (property in Object.getOwnPropertyNames(this)) {
			typeof this[property] != 'function' && (this[property] = null);
		}
	};

$.fn.owlCarousel.Constructor.Plugins.Lazy = Lazy;

})(window.Zepto || window.jQuery, window, document);

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home / opexmaga / public_html / alommomtaz.ir / vendors / bower_components / owl.carousel / src / js /

?? Editing: owl.lazyload.js

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