639 lines
18 KiB
JavaScript
639 lines
18 KiB
JavaScript
/*! Lity - v2.4.1 - 2020-04-26
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* http://sorgalla.com/lity/
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* Copyright (c) 2015-2020 Jan Sorgalla; Licensed MIT */
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(function(window, factory) {
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if (typeof define === 'function' && define.amd) {
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define(['jquery'], function($) {
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return factory(window, $);
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});
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} else if (typeof module === 'object' && typeof module.exports === 'object') {
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module.exports = factory(window, require('jquery'));
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} else {
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window.lity = factory(window, window.jQuery || window.Zepto);
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}
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}(typeof window !== "undefined" ? window : this, function(window, $) {
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'use strict';
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var document = window.document;
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var _win = $(window);
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var _deferred = $.Deferred;
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var _html = $('html');
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var _instances = [];
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var _attrAriaHidden = 'aria-hidden';
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var _dataAriaHidden = 'lity-' + _attrAriaHidden;
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var _focusableElementsSelector = 'a[href],area[href],input:not([disabled]),select:not([disabled]),textarea:not([disabled]),button:not([disabled]),iframe,object,embed,[contenteditable],[tabindex]:not([tabindex^="-"])';
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var _defaultOptions = {
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esc: true,
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handler: null,
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handlers: {
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image: imageHandler,
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inline: inlineHandler,
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youtube: youtubeHandler,
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vimeo: vimeoHandler,
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googlemaps: googlemapsHandler,
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facebookvideo: facebookvideoHandler,
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iframe: iframeHandler
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},
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template: '<div class="lity" role="dialog" aria-label="Dialog Window (Press escape to close)" tabindex="-1"><div class="lity-wrap" data-lity-close role="document"><div class="lity-loader" aria-hidden="true">Loading...</div><div class="lity-container"><div class="lity-content"></div><button class="lity-close" type="button" aria-label="Close (Press escape to close)" data-lity-close>×</button></div></div></div>'
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};
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var _imageRegexp = /(^data:image\/)|(\.(png|jpe?g|gif|svg|webp|bmp|ico|tiff?)(\?\S*)?$)/i;
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var _youtubeRegex = /(youtube(-nocookie)?\.com|youtu\.be)\/(watch\?v=|v\/|u\/|embed\/?)?([\w-]{11})(.*)?/i;
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var _vimeoRegex = /(vimeo(pro)?.com)\/(?:[^\d]+)?(\d+)\??(.*)?$/;
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var _googlemapsRegex = /((maps|www)\.)?google\.([^\/\?]+)\/?((maps\/?)?\?)(.*)/i;
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var _facebookvideoRegex = /(facebook\.com)\/([a-z0-9_-]*)\/videos\/([0-9]*)(.*)?$/i;
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var _transitionEndEvent = (function() {
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var el = document.createElement('div');
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var transEndEventNames = {
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WebkitTransition: 'webkitTransitionEnd',
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MozTransition: 'transitionend',
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OTransition: 'oTransitionEnd otransitionend',
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transition: 'transitionend'
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};
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for (var name in transEndEventNames) {
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if (el.style[name] !== undefined) {
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return transEndEventNames[name];
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}
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}
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return false;
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})();
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function transitionEnd(element) {
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var deferred = _deferred();
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if (!_transitionEndEvent || !element.length) {
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deferred.resolve();
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} else {
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element.one(_transitionEndEvent, deferred.resolve);
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setTimeout(deferred.resolve, 500);
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}
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return deferred.promise();
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}
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function settings(currSettings, key, value) {
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if (arguments.length === 1) {
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return $.extend({}, currSettings);
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}
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if (typeof key === 'string') {
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if (typeof value === 'undefined') {
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return typeof currSettings[key] === 'undefined'
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? null
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: currSettings[key];
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}
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currSettings[key] = value;
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} else {
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$.extend(currSettings, key);
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}
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return this;
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}
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function parseQueryParams(params) {
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var pairs = decodeURI(params.split('#')[0]).split('&');
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var obj = {}, p;
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for (var i = 0, n = pairs.length; i < n; i++) {
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if (!pairs[i]) {
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continue;
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}
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p = pairs[i].split('=');
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obj[p[0]] = p[1];
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}
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return obj;
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}
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function appendQueryParams(url, params) {
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return url + (url.indexOf('?') > -1 ? '&' : '?') + $.param(params);
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}
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function transferHash(originalUrl, newUrl) {
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var pos = originalUrl.indexOf('#');
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if (-1 === pos) {
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return newUrl;
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}
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if (pos > 0) {
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originalUrl = originalUrl.substr(pos);
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}
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return newUrl + originalUrl;
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}
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function error(msg) {
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return $('<span class="lity-error"></span>').append(msg);
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}
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function imageHandler(target, instance) {
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var desc = (instance.opener() && instance.opener().data('lity-desc')) || 'Image with no description';
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var img = $('<img src="' + target + '" alt="' + desc + '"/>');
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var deferred = _deferred();
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var failed = function() {
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deferred.reject(error('Failed loading image'));
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};
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img
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.on('load', function() {
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if (this.naturalWidth === 0) {
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return failed();
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}
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deferred.resolve(img);
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})
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.on('error', failed)
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;
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return deferred.promise();
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}
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imageHandler.test = function(target) {
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return _imageRegexp.test(target);
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};
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function inlineHandler(target, instance) {
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var el, placeholder, hasHideClass;
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try {
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el = $(target);
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} catch (e) {
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return false;
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}
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if (!el.length) {
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return false;
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}
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placeholder = $('<i style="display:none !important"></i>');
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hasHideClass = el.hasClass('lity-hide');
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instance
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.element()
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.one('lity:remove', function() {
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placeholder
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.before(el)
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.remove()
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;
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if (hasHideClass && !el.closest('.lity-content').length) {
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el.addClass('lity-hide');
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}
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})
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;
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return el
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.removeClass('lity-hide')
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.after(placeholder)
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;
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}
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function youtubeHandler(target) {
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var matches = _youtubeRegex.exec(target);
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if (!matches) {
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return false;
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}
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return iframeHandler(
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transferHash(
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target,
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appendQueryParams(
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'https://www.youtube' + (matches[2] || '') + '.com/embed/' + matches[4],
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$.extend(
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{
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autoplay: 1
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},
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parseQueryParams(matches[5] || '')
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)
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)
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)
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);
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}
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function vimeoHandler(target) {
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var matches = _vimeoRegex.exec(target);
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if (!matches) {
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return false;
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}
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return iframeHandler(
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transferHash(
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target,
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appendQueryParams(
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'https://player.vimeo.com/video/' + matches[3],
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$.extend(
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{
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autoplay: 1
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},
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parseQueryParams(matches[4] || '')
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)
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)
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)
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);
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}
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function facebookvideoHandler(target) {
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var matches = _facebookvideoRegex.exec(target);
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if (!matches) {
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return false;
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}
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if (0 !== target.indexOf('http')) {
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target = 'https:' + target;
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}
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return iframeHandler(
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transferHash(
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target,
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appendQueryParams(
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'https://www.facebook.com/plugins/video.php?href=' + target,
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$.extend(
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{
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autoplay: 1
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},
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parseQueryParams(matches[4] || '')
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)
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)
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)
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);
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}
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function googlemapsHandler(target) {
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var matches = _googlemapsRegex.exec(target);
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if (!matches) {
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return false;
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}
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return iframeHandler(
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transferHash(
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target,
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appendQueryParams(
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'https://www.google.' + matches[3] + '/maps?' + matches[6],
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{
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output: matches[6].indexOf('layer=c') > 0 ? 'svembed' : 'embed'
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}
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)
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)
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);
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}
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function iframeHandler(target) {
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return '<div class="lity-iframe-container"><iframe frameborder="0" allowfullscreen allow="autoplay; fullscreen" src="' + target + '"/></div>';
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}
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function winHeight() {
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return document.documentElement.clientHeight
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? document.documentElement.clientHeight
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: Math.round(_win.height());
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}
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function keydown(e) {
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var current = currentInstance();
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if (!current) {
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return;
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}
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// ESC key
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if (e.keyCode === 27 && !!current.options('esc')) {
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current.close();
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}
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// TAB key
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if (e.keyCode === 9) {
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handleTabKey(e, current);
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}
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}
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function handleTabKey(e, instance) {
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var focusableElements = instance.element().find(_focusableElementsSelector);
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var focusedIndex = focusableElements.index(document.activeElement);
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if (e.shiftKey && focusedIndex <= 0) {
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focusableElements.get(focusableElements.length - 1).focus();
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e.preventDefault();
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} else if (!e.shiftKey && focusedIndex === focusableElements.length - 1) {
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focusableElements.get(0).focus();
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e.preventDefault();
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}
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}
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function resize() {
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$.each(_instances, function(i, instance) {
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instance.resize();
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});
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}
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function registerInstance(instanceToRegister) {
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if (1 === _instances.unshift(instanceToRegister)) {
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_html.addClass('lity-active');
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_win
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.on({
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resize: resize,
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keydown: keydown
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})
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;
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}
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$('body > *').not(instanceToRegister.element())
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.addClass('lity-hidden')
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.each(function() {
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var el = $(this);
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if (undefined !== el.data(_dataAriaHidden)) {
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return;
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}
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el.data(_dataAriaHidden, el.attr(_attrAriaHidden) || null);
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})
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.attr(_attrAriaHidden, 'true')
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;
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}
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function removeInstance(instanceToRemove) {
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var show;
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instanceToRemove
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.element()
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.attr(_attrAriaHidden, 'true')
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;
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if (1 === _instances.length) {
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_html.removeClass('lity-active');
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_win
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.off({
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resize: resize,
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keydown: keydown
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})
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;
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}
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_instances = $.grep(_instances, function(instance) {
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return instanceToRemove !== instance;
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});
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if (!!_instances.length) {
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show = _instances[0].element();
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} else {
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show = $('.lity-hidden');
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}
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show
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.removeClass('lity-hidden')
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.each(function() {
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var el = $(this), oldAttr = el.data(_dataAriaHidden);
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if (!oldAttr) {
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el.removeAttr(_attrAriaHidden);
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} else {
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el.attr(_attrAriaHidden, oldAttr);
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}
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el.removeData(_dataAriaHidden);
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})
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;
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}
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function currentInstance() {
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if (0 === _instances.length) {
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return null;
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}
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return _instances[0];
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}
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function factory(target, instance, handlers, preferredHandler) {
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var handler = 'inline', content;
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var currentHandlers = $.extend({}, handlers);
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if (preferredHandler && currentHandlers[preferredHandler]) {
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content = currentHandlers[preferredHandler](target, instance);
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handler = preferredHandler;
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} else {
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// Run inline and iframe handlers after all other handlers
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$.each(['inline', 'iframe'], function(i, name) {
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delete currentHandlers[name];
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currentHandlers[name] = handlers[name];
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});
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$.each(currentHandlers, function(name, currentHandler) {
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// Handler might be "removed" by setting callback to null
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if (!currentHandler) {
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return true;
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}
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if (
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currentHandler.test &&
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!currentHandler.test(target, instance)
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) {
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return true;
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}
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content = currentHandler(target, instance);
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if (false !== content) {
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handler = name;
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return false;
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}
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});
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}
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return {handler: handler, content: content || ''};
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}
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function Lity(target, options, opener, activeElement) {
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var self = this;
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var result;
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var isReady = false;
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var isClosed = false;
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var element;
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var content;
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options = $.extend(
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{},
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_defaultOptions,
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options
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);
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element = $(options.template);
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// -- API --
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self.element = function() {
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return element;
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};
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self.opener = function() {
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return opener;
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};
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self.options = $.proxy(settings, self, options);
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self.handlers = $.proxy(settings, self, options.handlers);
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self.resize = function() {
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if (!isReady || isClosed) {
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return;
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}
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content
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.css('max-height', winHeight() + 'px')
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.trigger('lity:resize', [self])
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;
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};
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self.close = function() {
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if (!isReady || isClosed) {
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return;
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}
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isClosed = true;
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removeInstance(self);
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var deferred = _deferred();
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// We return focus only if the current focus is inside this instance
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if (
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activeElement &&
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(
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document.activeElement === element[0] ||
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$.contains(element[0], document.activeElement)
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)
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) {
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try {
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activeElement.focus();
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} catch (e) {
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// Ignore exceptions, eg. for SVG elements which can't be
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// focused in IE11
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}
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}
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content.trigger('lity:close', [self]);
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element
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.removeClass('lity-opened')
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.addClass('lity-closed')
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;
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transitionEnd(content.add(element))
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.always(function() {
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content.trigger('lity:remove', [self]);
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element.remove();
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element = undefined;
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deferred.resolve();
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})
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;
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return deferred.promise();
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};
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// -- Initialization --
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result = factory(target, self, options.handlers, options.handler);
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element
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.attr(_attrAriaHidden, 'false')
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.addClass('lity-loading lity-opened lity-' + result.handler)
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.appendTo('body')
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.focus()
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.on('click', '[data-lity-close]', function(e) {
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if ($(e.target).is('[data-lity-close]')) {
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self.close();
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}
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})
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.trigger('lity:open', [self])
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;
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registerInstance(self);
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$.when(result.content)
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.always(ready)
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;
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function ready(result) {
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content = $(result)
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.css('max-height', winHeight() + 'px')
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;
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element
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.find('.lity-loader')
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.each(function() {
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var loader = $(this);
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transitionEnd(loader)
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.always(function() {
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loader.remove();
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})
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;
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})
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;
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element
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.removeClass('lity-loading')
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.find('.lity-content')
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.empty()
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.append(content)
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;
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isReady = true;
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content
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.trigger('lity:ready', [self])
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;
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}
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}
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function lity(target, options, opener) {
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if (!target.preventDefault) {
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opener = $(opener);
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} else {
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target.preventDefault();
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opener = $(this);
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target = opener.data('lity-target') || opener.attr('href') || opener.attr('src');
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}
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var instance = new Lity(
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target,
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$.extend(
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{},
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opener.data('lity-options') || opener.data('lity'),
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options
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),
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opener,
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document.activeElement
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);
|
|
|
|
if (!target.preventDefault) {
|
|
return instance;
|
|
}
|
|
}
|
|
|
|
lity.version = '2.4.1';
|
|
lity.options = $.proxy(settings, lity, _defaultOptions);
|
|
lity.handlers = $.proxy(settings, lity, _defaultOptions.handlers);
|
|
lity.current = currentInstance;
|
|
|
|
$(document).on('click.lity', '[data-lity]', lity);
|
|
|
|
return lity;
|
|
}));
|