File "lity.js"
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/*! Lity - v3.0.0-dev - 2020-04-26
* http://sorgalla.com/lity/
* Copyright (c) 2015-2020 Jan Sorgalla; Licensed MIT */
(function(window, factory) {
if (typeof define === 'function' && define.amd) {
define(['jquery'], function($) {
return factory(window, $);
});
} else if (typeof module === 'object' && typeof module.exports === 'object') {
module.exports = factory(window, require('jquery'));
} else {
window.lity = factory(window, window.jQuery || window.Zepto);
}
}(typeof window !== "undefined" ? window : this, function(window, $) {
'use strict';
var document = window.document;
var _win = $(window);
var _deferred = $.Deferred;
var _html = $('html');
var _instances = [];
var _attrAriaHidden = 'aria-hidden';
var _dataAriaHidden = 'lity-' + _attrAriaHidden;
var _focusableElementsSelector = 'a[href],area[href],input:not([disabled]),select:not([disabled]),textarea:not([disabled]),button:not([disabled]),iframe,object,embed,[contenteditable],[tabindex]:not([tabindex^="-"])';
var _defaultOptions = {
esc: true,
handler: null,
handlers: {
image: imageHandler,
inline: inlineHandler,
iframe: iframeHandler
},
forceFocusInside: false,
template: '<div class="lity" role="dialog" aria-label="Dialog Window (Press escape to close)" tabindex="-1"><div class="lity-wrap" data-lity-close role="document"><div class="lity-loader" aria-hidden="true">Loading...</div><div class="lity-container"><div class="lity-content"></div><button class="lity-close" type="button" aria-label="Close (Press escape to close)" data-lity-close>×</button></div></div></div>'
};
var _imageRegexp = /(^data:image\/)|(\.(png|jpe?g|gif|svg|webp|bmp|ico|tiff?)(\?\S*)?$)/i;
var _transitionEndEvent = (function() {
var el = document.createElement('div');
var transEndEventNames = {
WebkitTransition: 'webkitTransitionEnd',
MozTransition: 'transitionend',
OTransition: 'oTransitionEnd otransitionend',
transition: 'transitionend'
};
for (var name in transEndEventNames) {
if (el.style[name] !== undefined) {
return transEndEventNames[name];
}
}
return false;
})();
function transitionEnd(element) {
var deferred = _deferred();
if (!_transitionEndEvent || !element.length) {
deferred.resolve();
} else {
element.one(_transitionEndEvent, deferred.resolve);
setTimeout(deferred.resolve, 500);
}
return deferred.promise();
}
function settings(currSettings, key, value) {
if (arguments.length === 1) {
return $.extend({}, currSettings);
}
if (typeof key === 'string') {
if (typeof value === 'undefined') {
return typeof currSettings[key] === 'undefined'
? null
: currSettings[key];
}
currSettings[key] = value;
} else {
$.extend(currSettings, key);
}
return this;
}
function parseQueryParams(params) {
var pos = params.indexOf('?');
if (pos > -1) {
params = params.substr(pos + 1);
}
var pairs = decodeURI(params.split('#')[0]).split('&');
var obj = {}, p;
for (var i = 0, n = pairs.length; i < n; i++) {
if (!pairs[i]) {
continue;
}
p = pairs[i].split('=');
obj[p[0]] = p[1];
}
return obj;
}
function appendQueryParams(url, params) {
if (!params) {
return url;
}
if ('string' === $.type(params)) {
params = parseQueryParams(params);
}
if (url.indexOf('?') > -1) {
var split = url.split('?');
url = split.shift();
params = $.extend(
{},
parseQueryParams(split[0]),
params
)
}
return url + '?' + $.param(params);
}
function transferHash(originalUrl, newUrl) {
var pos = originalUrl.indexOf('#');
if (-1 === pos) {
return newUrl;
}
if (pos > 0) {
originalUrl = originalUrl.substr(pos);
}
return newUrl + originalUrl;
}
function iframe(iframeUrl, instance, queryParams, hashUrl) {
instance && instance.element().addClass('lity-iframe');
if (queryParams) {
iframeUrl = appendQueryParams(iframeUrl, queryParams);
}
if (hashUrl) {
iframeUrl = transferHash(hashUrl, iframeUrl);
}
return '<div class="lity-iframe-container"><iframe frameborder="0" allowfullscreen allow="autoplay; fullscreen" src="' + iframeUrl + '"/></div>';
}
function error(msg) {
return $('<span class="lity-error"></span>').append(msg);
}
function imageHandler(target, instance) {
var desc = (instance.opener() && instance.opener().data('lity-desc')) || 'Image with no description';
var img = $('<img src="' + target + '" alt="' + desc + '"/>');
var deferred = _deferred();
var failed = function() {
deferred.reject(error('Failed loading image'));
};
img
.on('load', function() {
if (this.naturalWidth === 0) {
return failed();
}
deferred.resolve(img);
})
.on('error', failed)
;
return deferred.promise();
}
imageHandler.test = function(target) {
return _imageRegexp.test(target);
};
function inlineHandler(target, instance) {
var el, placeholder, hasHideClass;
try {
el = $(target);
} catch (e) {
return false;
}
if (!el.length) {
return false;
}
placeholder = $('<i style="display:none !important"></i>');
hasHideClass = el.hasClass('lity-hide');
instance
.element()
.one('lity:remove', function() {
placeholder
.before(el)
.remove()
;
if (hasHideClass && !el.closest('.lity-content').length) {
el.addClass('lity-hide');
}
})
;
return el
.removeClass('lity-hide')
.after(placeholder)
;
}
function iframeHandler(target, instance) {
return iframe(target, instance);
}
function winHeight() {
return document.documentElement.clientHeight
? document.documentElement.clientHeight
: Math.round(_win.height());
}
function keydown(e) {
var current = currentInstance();
if (!current) {
return;
}
// ESC key
if (e.keyCode === 27 && !!current.options('esc')) {
current.close();
}
// TAB key
if (e.keyCode === 9) {
handleTabKey(e, current);
}
}
function handleTabKey(e, instance) {
var focusableElements = instance.element().find(_focusableElementsSelector);
var focusedIndex = focusableElements.index(document.activeElement);
if (e.shiftKey && focusedIndex <= 0) {
focusableElements.get(focusableElements.length - 1).focus();
e.preventDefault();
} else if (!e.shiftKey && focusedIndex === focusableElements.length - 1) {
focusableElements.get(0).focus();
e.preventDefault();
}
if (focusedIndex === -1 && instance.options().forceFocusInside) {
focusableElements.get(0).focus();
e.preventDefault();
}
}
function resize() {
$.each(_instances, function(i, instance) {
instance.resize();
});
}
function registerInstance(instanceToRegister) {
if (1 === _instances.unshift(instanceToRegister)) {
_html.addClass('lity-active');
_win
.on({
resize: resize,
keydown: keydown
})
;
}
$('body > *').not(instanceToRegister.element())
.addClass('lity-hidden')
.each(function() {
var el = $(this);
if (undefined !== el.data(_dataAriaHidden)) {
return;
}
el.data(_dataAriaHidden, el.attr(_attrAriaHidden) || null);
})
.attr(_attrAriaHidden, 'true')
;
}
function removeInstance(instanceToRemove) {
var show;
instanceToRemove
.element()
.attr(_attrAriaHidden, 'true')
;
if (1 === _instances.length) {
_html.removeClass('lity-active');
_win
.off({
resize: resize,
keydown: keydown
})
;
}
_instances = $.grep(_instances, function(instance) {
return instanceToRemove !== instance;
});
if (!!_instances.length) {
show = _instances[0].element();
} else {
show = $('.lity-hidden');
}
show
.removeClass('lity-hidden')
.each(function() {
var el = $(this), oldAttr = el.data(_dataAriaHidden);
if (!oldAttr) {
el.removeAttr(_attrAriaHidden);
} else {
el.attr(_attrAriaHidden, oldAttr);
}
el.removeData(_dataAriaHidden);
})
;
}
function currentInstance() {
if (0 === _instances.length) {
return null;
}
return _instances[0];
}
function factory(target, instance, handlers, preferredHandler) {
var handler = 'inline', content;
var currentHandlers = $.extend({}, handlers);
if (preferredHandler && currentHandlers[preferredHandler]) {
content = currentHandlers[preferredHandler](target, instance);
handler = preferredHandler;
} else {
// Run inline and iframe handlers after all other handlers
$.each(['inline', 'iframe'], function(i, name) {
delete currentHandlers[name];
currentHandlers[name] = handlers[name];
});
$.each(currentHandlers, function(name, currentHandler) {
// Handler might be "removed" by setting callback to null
if (!currentHandler) {
return true;
}
if (
currentHandler.test &&
!currentHandler.test(target, instance)
) {
return true;
}
content = currentHandler(target, instance);
if (false !== content) {
handler = name;
return false;
}
});
}
return {handler: handler, content: content || ''};
}
function Lity(target, options, opener, activeElement) {
var self = this;
var result;
var isReady = false;
var isClosed = false;
var element;
var content;
options = $.extend(
{},
_defaultOptions,
options
);
element = $(options.template);
// -- API --
self.element = function() {
return element;
};
self.opener = function() {
return opener;
};
self.content = function() {
return content;
};
self.options = $.proxy(settings, self, options);
self.handlers = $.proxy(settings, self, options.handlers);
self.resize = function() {
if (!isReady || isClosed) {
return;
}
content
.css('max-height', winHeight() + 'px')
.trigger('lity:resize', [self])
;
};
self.close = function() {
if (isClosed) {
return;
}
isClosed = true;
removeInstance(self);
var deferred = _deferred();
// We return focus only if the current focus is inside this instance
if (
activeElement &&
(
document.activeElement === element[0] ||
$.contains(element[0], document.activeElement)
)
) {
try {
activeElement.focus();
} catch (e) {
// Ignore exceptions, eg. for SVG elements which can't be
// focused in IE11
}
}
var trigerable = (content ? content : element);
trigerable.trigger('lity:close', [self]);
element
.removeClass('lity-opened')
.addClass('lity-closed')
;
transitionEnd(trigerable.add(element))
.always(function() {
trigerable.trigger('lity:remove', [self]);
element.remove();
element = undefined;
deferred.resolve();
})
;
return deferred.promise();
};
// -- Initialization --
result = factory(target, self, options.handlers, options.handler);
element
.attr(_attrAriaHidden, 'false')
.addClass('lity-loading lity-opened lity-' + result.handler)
.appendTo('body')
.focus()
.on('click', '[data-lity-close]', function(e) {
if ($(e.target).is('[data-lity-close]')) {
self.close();
}
})
.trigger('lity:open', [self])
;
registerInstance(self);
$.when(result.content)
.always(ready)
;
function ready(result) {
if (isClosed) {
return;
}
content = $(result)
.css('max-height', winHeight() + 'px')
;
element
.find('.lity-loader')
.each(function() {
var loader = $(this);
transitionEnd(loader)
.always(function() {
loader.remove();
})
;
})
;
element
.removeClass('lity-loading')
.find('.lity-content')
.empty()
.append(content)
;
isReady = true;
content
.trigger('lity:ready', [self])
;
}
}
function lity(target, options, opener) {
if (!target.preventDefault) {
opener = $(opener);
} else {
target.preventDefault();
opener = $(this);
target = opener.data('lity-target') || opener.attr('href') || opener.attr('src');
}
var instance = new Lity(
target,
$.extend(
{},
opener.data('lity-options') || opener.data('lity'),
options
),
opener,
document.activeElement
);
if (!target.preventDefault) {
return instance;
}
}
lity.version = '3.0.0-dev';
lity.options = $.proxy(settings, lity, _defaultOptions);
lity.handlers = $.proxy(settings, lity, _defaultOptions.handlers);
lity.current = currentInstance;
lity.iframe = iframe;
$(document).on('click.lity', '[data-lity]', lity);
return lity;
}));