Mini Shell
const Lightbox = (($) => {
const NAME = 'ekkoLightbox'
const JQUERY_NO_CONFLICT = $.fn[NAME]
const Default = {
title: '',
footer: '',
maxWidth: 9999,
maxHeight: 9999,
showArrows: true, //display the left / right arrows or not
wrapping: true, //if true, gallery loops infinitely
type: null, //force the lightbox into image / youtube mode. if null, or not image|youtube|vimeo; detect it
alwaysShowClose: false, //always show the close button, even if there is no title
loadingMessage: '<div class="ekko-lightbox-loader"><div><div></div><div></div></div></div>', // http://tobiasahlin.com/spinkit/
leftArrow: '<span>❮</span>',
rightArrow: '<span>❯</span>',
strings: {
close: 'Close',
fail: 'Failed to load image:',
type: 'Could not detect remote target type. Force the type using data-type',
},
doc: document, // if in an iframe can specify top.document
onShow() {},
onShown() {},
onHide() {},
onHidden() {},
onNavigate() {},
onContentLoaded() {}
}
class Lightbox {
/**
Class properties:
_$element: null -> the <a> element currently being displayed
_$modal: The bootstrap modal generated
_$modalDialog: The .modal-dialog
_$modalContent: The .modal-content
_$modalBody: The .modal-body
_$modalHeader: The .modal-header
_$modalFooter: The .modal-footer
_$lightboxContainerOne: Container of the first lightbox element
_$lightboxContainerTwo: Container of the second lightbox element
_$lightboxBody: First element in the container
_$modalArrows: The overlayed arrows container
_$galleryItems: Other <a>'s available for this gallery
_galleryName: Name of the current data('gallery') showing
_galleryIndex: The current index of the _$galleryItems being shown
_config: {} the options for the modal
_modalId: unique id for the current lightbox
_padding / _border: CSS properties for the modal container; these are used to calculate the available space for the content
*/
static get Default() {
return Default
}
constructor($element, config) {
this._config = $.extend({}, Default, config)
this._$modalArrows = null
this._galleryIndex = 0
this._galleryName = null
this._padding = null
this._border = null
this._titleIsShown = false
this._footerIsShown = false
this._wantedWidth = 0
this._wantedHeight = 0
this._touchstartX = 0
this._touchendX = 0
this._modalId = `ekkoLightbox-${Math.floor((Math.random() * 1000) + 1)}`;
this._$element = $element instanceof jQuery ? $element : $($element)
this._isBootstrap3 = $.fn.modal.Constructor.VERSION[0] == 3;
let h4 = `<h4 class="modal-title">${this._config.title || " "}</h4>`;
let btn = `<button type="button" class="close" data-dismiss="modal" aria-label="${this._config.strings.close}"><span aria-hidden="true">×</span></button>`;
let header = `<div class="modal-header${this._config.title || this._config.alwaysShowClose ? '' : ' hide'}">`+(this._isBootstrap3 ? btn+h4 : h4+btn)+`</div>`;
let footer = `<div class="modal-footer${this._config.footer ? '' : ' hide'}">${this._config.footer || " "}</div>`;
let body = '<div class="modal-body"><div class="ekko-lightbox-container"><div class="ekko-lightbox-item fade in show"></div><div class="ekko-lightbox-item fade"></div></div></div>'
let dialog = `<div class="modal-dialog" role="document"><div class="modal-content">${header}${body}${footer}</div></div>`
$(this._config.doc.body).append(`<div id="${this._modalId}" class="ekko-lightbox modal fade" tabindex="-1" tabindex="-1" role="dialog" aria-hidden="true">${dialog}</div>`)
this._$modal = $(`#${this._modalId}`, this._config.doc)
this._$modalDialog = this._$modal.find('.modal-dialog').first()
this._$modalContent = this._$modal.find('.modal-content').first()
this._$modalBody = this._$modal.find('.modal-body').first()
this._$modalHeader = this._$modal.find('.modal-header').first()
this._$modalFooter = this._$modal.find('.modal-footer').first()
this._$lightboxContainer = this._$modalBody.find('.ekko-lightbox-container').first()
this._$lightboxBodyOne = this._$lightboxContainer.find('> div:first-child').first()
this._$lightboxBodyTwo = this._$lightboxContainer.find('> div:last-child').first()
this._border = this._calculateBorders()
this._padding = this._calculatePadding()
this._galleryName = this._$element.data('gallery')
if (this._galleryName) {
this._$galleryItems = $(document.body).find(`*[data-gallery="${this._galleryName}"]`)
this._galleryIndex = this._$galleryItems.index(this._$element)
$(document).on('keydown.ekkoLightbox', this._navigationalBinder.bind(this))
// add the directional arrows to the modal
if (this._config.showArrows && this._$galleryItems.length > 1) {
this._$lightboxContainer.append(`<div class="ekko-lightbox-nav-overlay"><a href="#">${this._config.leftArrow}</a><a href="#">${this._config.rightArrow}</a></div>`)
this._$modalArrows = this._$lightboxContainer.find('div.ekko-lightbox-nav-overlay').first()
this._$lightboxContainer.on('click', 'a:first-child', event => {
event.preventDefault()
return this.navigateLeft()
})
this._$lightboxContainer.on('click', 'a:last-child', event => {
event.preventDefault()
return this.navigateRight()
})
this.updateNavigation()
}
}
this._$modal
.on('show.bs.modal', this._config.onShow.bind(this))
.on('shown.bs.modal', () => {
this._toggleLoading(true)
this._handle()
return this._config.onShown.call(this)
})
.on('hide.bs.modal', this._config.onHide.bind(this))
.on('hidden.bs.modal', () => {
if (this._galleryName) {
$(document).off('keydown.ekkoLightbox')
$(window).off('resize.ekkoLightbox')
}
this._$modal.remove()
return this._config.onHidden.call(this)
})
.modal(this._config)
$(window).on('resize.ekkoLightbox', () => {
this._resize(this._wantedWidth, this._wantedHeight)
})
this._$lightboxContainer
.on('touchstart', () => {
this._touchstartX = event.changedTouches[0].screenX;
})
.on('touchend', () => {
this._touchendX = event.changedTouches[0].screenX;
this._swipeGesure();
})
}
element() {
return this._$element;
}
modal() {
return this._$modal;
}
navigateTo(index) {
if (index < 0 || index > this._$galleryItems.length-1)
return this
this._galleryIndex = index
this.updateNavigation()
this._$element = $(this._$galleryItems.get(this._galleryIndex))
this._handle();
}
navigateLeft() {
if(!this._$galleryItems)
return;
if (this._$galleryItems.length === 1)
return
if (this._galleryIndex === 0) {
if (this._config.wrapping)
this._galleryIndex = this._$galleryItems.length - 1
else
return
}
else //circular
this._galleryIndex--
this._config.onNavigate.call(this, 'left', this._galleryIndex)
return this.navigateTo(this._galleryIndex)
}
navigateRight() {
if(!this._$galleryItems)
return;
if (this._$galleryItems.length === 1)
return
if (this._galleryIndex === this._$galleryItems.length - 1) {
if (this._config.wrapping)
this._galleryIndex = 0
else
return
}
else //circular
this._galleryIndex++
this._config.onNavigate.call(this, 'right', this._galleryIndex)
return this.navigateTo(this._galleryIndex)
}
updateNavigation() {
if (!this._config.wrapping) {
let $nav = this._$lightboxContainer.find('div.ekko-lightbox-nav-overlay')
if (this._galleryIndex === 0)
$nav.find('a:first-child').addClass('disabled')
else
$nav.find('a:first-child').removeClass('disabled')
if (this._galleryIndex === this._$galleryItems.length - 1)
$nav.find('a:last-child').addClass('disabled')
else
$nav.find('a:last-child').removeClass('disabled')
}
}
close() {
return this._$modal.modal('hide');
}
// helper private methods
_navigationalBinder(event) {
event = event || window.event;
if (event.keyCode === 39)
return this.navigateRight()
if (event.keyCode === 37)
return this.navigateLeft()
}
// type detection private methods
_detectRemoteType(src, type) {
type = type || false;
if(!type && this._isImage(src))
type = 'image';
if(!type && this._getYoutubeId(src))
type = 'youtube';
if(!type && this._getVimeoId(src))
type = 'vimeo';
if(!type && this._getInstagramId(src))
type = 'instagram';
if(!type || ['image', 'youtube', 'vimeo', 'instagram', 'video', 'url'].indexOf(type) < 0)
type = 'url';
return type;
}
_isImage(string) {
return string && string.match(/(^data:image\/.*,)|(\.(jp(e|g|eg)|gif|png|bmp|webp|svg)((\?|#).*)?$)/i)
}
_containerToUse() {
// if currently showing an image, fade it out and remove
let $toUse = this._$lightboxBodyTwo
let $current = this._$lightboxBodyOne
if(this._$lightboxBodyTwo.hasClass('in')) {
$toUse = this._$lightboxBodyOne
$current = this._$lightboxBodyTwo
}
$current.removeClass('in show')
setTimeout(() => {
if(!this._$lightboxBodyTwo.hasClass('in'))
this._$lightboxBodyTwo.empty()
if(!this._$lightboxBodyOne.hasClass('in'))
this._$lightboxBodyOne.empty()
}, 500)
$toUse.addClass('in show')
return $toUse
}
_handle() {
let $toUse = this._containerToUse()
this._updateTitleAndFooter()
let currentRemote = this._$element.attr('data-remote') || this._$element.attr('href')
let currentType = this._detectRemoteType(currentRemote, this._$element.attr('data-type') || false)
if(['image', 'youtube', 'vimeo', 'instagram', 'video', 'url'].indexOf(currentType) < 0)
return this._error(this._config.strings.type)
switch(currentType) {
case 'image':
this._preloadImage(currentRemote, $toUse)
this._preloadImageByIndex(this._galleryIndex, 3)
break;
case 'youtube':
this._showYoutubeVideo(currentRemote, $toUse);
break;
case 'vimeo':
this._showVimeoVideo(this._getVimeoId(currentRemote), $toUse);
break;
case 'instagram':
this._showInstagramVideo(this._getInstagramId(currentRemote), $toUse);
break;
case 'video':
this._showHtml5Video(currentRemote, $toUse);
break;
default: // url
this._loadRemoteContent(currentRemote, $toUse);
break;
}
return this;
}
_getYoutubeId(string) {
if(!string)
return false;
let matches = string.match(/^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/)
return (matches && matches[2].length === 11) ? matches[2] : false
}
_getVimeoId(string) {
return string && string.indexOf('vimeo') > 0 ? string : false
}
_getInstagramId(string) {
return string && string.indexOf('instagram') > 0 ? string : false
}
// layout private methods
_toggleLoading(show) {
show = show || false
if(show) {
this._$modalDialog.css('display', 'none')
this._$modal.removeClass('in show')
$('.modal-backdrop').append(this._config.loadingMessage)
}
else {
this._$modalDialog.css('display', 'block')
this._$modal.addClass('in show')
$('.modal-backdrop').find('.ekko-lightbox-loader').remove()
}
return this;
}
_calculateBorders() {
return {
top: this._totalCssByAttribute('border-top-width'),
right: this._totalCssByAttribute('border-right-width'),
bottom: this._totalCssByAttribute('border-bottom-width'),
left: this._totalCssByAttribute('border-left-width'),
}
}
_calculatePadding() {
return {
top: this._totalCssByAttribute('padding-top'),
right: this._totalCssByAttribute('padding-right'),
bottom: this._totalCssByAttribute('padding-bottom'),
left: this._totalCssByAttribute('padding-left'),
}
}
_totalCssByAttribute(attribute) {
return parseInt(this._$modalDialog.css(attribute), 10) +
parseInt(this._$modalContent.css(attribute), 10) +
parseInt(this._$modalBody.css(attribute), 10)
}
_updateTitleAndFooter() {
let title = this._$element.data('title') || ""
let caption = this._$element.data('footer') || ""
this._titleIsShown = false
if (title || this._config.alwaysShowClose) {
this._titleIsShown = true
this._$modalHeader.css('display', '').find('.modal-title').html(title || " ")
}
else
this._$modalHeader.css('display', 'none')
this._footerIsShown = false
if (caption) {
this._footerIsShown = true
this._$modalFooter.css('display', '').html(caption)
}
else
this._$modalFooter.css('display', 'none')
return this;
}
_showYoutubeVideo(remote, $containerForElement) {
let id = this._getYoutubeId(remote)
let query = remote.indexOf('&') > 0 ? remote.substr(remote.indexOf('&')) : ''
let width = this._$element.data('width') || 560
let height = this._$element.data('height') || width / ( 560/315 )
return this._showVideoIframe(
`//www.youtube.com/embed/${id}?badge=0&autoplay=1&html5=1${query}`,
width,
height,
$containerForElement
);
}
_showVimeoVideo(id, $containerForElement) {
let width = this._$element.data('width') || 500
let height = this._$element.data('height') || width / ( 560/315 )
return this._showVideoIframe(id + '?autoplay=1', width, height, $containerForElement)
}
_showInstagramVideo(id, $containerForElement) {
// instagram load their content into iframe's so this can be put straight into the element
let width = this._$element.data('width') || 612
let height = width + 80;
id = id.substr(-1) !== '/' ? id + '/' : id; // ensure id has trailing slash
$containerForElement.html(`<iframe width="${width}" height="${height}" src="${id}embed/" frameborder="0" allowfullscreen></iframe>`);
this._resize(width, height);
this._config.onContentLoaded.call(this);
if (this._$modalArrows) //hide the arrows when showing video
this._$modalArrows.css('display', 'none');
this._toggleLoading(false);
return this;
}
_showVideoIframe(url, width, height, $containerForElement) { // should be used for videos only. for remote content use loadRemoteContent (data-type=url)
height = height || width; // default to square
$containerForElement.html(`<div class="embed-responsive embed-responsive-16by9"><iframe width="${width}" height="${height}" src="${url}" frameborder="0" allowfullscreen class="embed-responsive-item"></iframe></div>`);
this._resize(width, height);
this._config.onContentLoaded.call(this);
if (this._$modalArrows)
this._$modalArrows.css('display', 'none'); //hide the arrows when showing video
this._toggleLoading(false);
return this;
}
_showHtml5Video(url, $containerForElement) { // should be used for videos only. for remote content use loadRemoteContent (data-type=url)
let width = this._$element.data('width') || 560
let height = this._$element.data('height') || width / ( 560/315 )
$containerForElement.html(`<div class="embed-responsive embed-responsive-16by9"><video width="${width}" height="${height}" src="${url}" preload="auto" autoplay controls class="embed-responsive-item"></video></div>`);
this._resize(width, height);
this._config.onContentLoaded.call(this);
if (this._$modalArrows)
this._$modalArrows.css('display', 'none'); //hide the arrows when showing video
this._toggleLoading(false);
return this;
}
_loadRemoteContent(url, $containerForElement) {
let width = this._$element.data('width') || 560;
let height = this._$element.data('height') || 560;
let disableExternalCheck = this._$element.data('disableExternalCheck') || false;
this._toggleLoading(false);
// external urls are loading into an iframe
// local ajax can be loaded into the container itself
if (!disableExternalCheck && !this._isExternal(url)) {
$containerForElement.load(url, $.proxy(() => {
return this._$element.trigger('loaded.bs.modal');l
}));
} else {
$containerForElement.html(`<iframe src="${url}" frameborder="0" allowfullscreen></iframe>`);
this._config.onContentLoaded.call(this);
}
if (this._$modalArrows) //hide the arrows when remote content
this._$modalArrows.css('display', 'none')
this._resize(width, height);
return this;
}
_isExternal(url) {
let match = url.match(/^([^:\/?#]+:)?(?:\/\/([^\/?#]*))?([^?#]+)?(\?[^#]*)?(#.*)?/);
if (typeof match[1] === "string" && match[1].length > 0 && match[1].toLowerCase() !== location.protocol)
return true;
if (typeof match[2] === "string" && match[2].length > 0 && match[2].replace(new RegExp(`:(${{
"http:": 80,
"https:": 443
}[location.protocol]})?$`), "") !== location.host)
return true;
return false;
}
_error( message ) {
console.error(message);
this._containerToUse().html(message);
this._resize(300, 300);
return this;
}
_preloadImageByIndex(startIndex, numberOfTimes) {
if(!this._$galleryItems)
return;
let next = $(this._$galleryItems.get(startIndex), false)
if(typeof next == 'undefined')
return
let src = next.attr('data-remote') || next.attr('href')
if (next.attr('data-type') === 'image' || this._isImage(src))
this._preloadImage(src, false)
if(numberOfTimes > 0)
return this._preloadImageByIndex(startIndex + 1, numberOfTimes-1);
}
_preloadImage( src, $containerForImage) {
$containerForImage = $containerForImage || false
let img = new Image();
if ($containerForImage) {
// if loading takes > 200ms show a loader
let loadingTimeout = setTimeout(() => {
$containerForImage.append(this._config.loadingMessage)
}, 200)
img.onload = () => {
if(loadingTimeout)
clearTimeout(loadingTimeout)
loadingTimeout = null;
let image = $('<img />');
image.attr('src', img.src);
image.addClass('img-fluid');
// backward compatibility for bootstrap v3
image.css('width', '100%');
$containerForImage.html(image);
if (this._$modalArrows)
this._$modalArrows.css('display', '') // remove display to default to css property
this._resize(img.width, img.height);
this._toggleLoading(false);
return this._config.onContentLoaded.call(this);
};
img.onerror = () => {
this._toggleLoading(false);
return this._error(this._config.strings.fail+` ${src}`);
};
}
img.src = src;
return img;
}
_swipeGesure() {
if (this._touchendX < this._touchstartX) {
return this.navigateRight();
}
if (this._touchendX > this._touchstartX) {
return this.navigateLeft();
}
}
_resize( width, height ) {
height = height || width
this._wantedWidth = width
this._wantedHeight = height
let imageAspecRatio = width / height;
// if width > the available space, scale down the expected width and height
let widthBorderAndPadding = this._padding.left + this._padding.right + this._border.left + this._border.right
// force 10px margin if window size > 575px
let addMargin = this._config.doc.body.clientWidth > 575 ? 20 : 0
let discountMargin = this._config.doc.body.clientWidth > 575 ? 0 : 20
let maxWidth = Math.min(width + widthBorderAndPadding, this._config.doc.body.clientWidth - addMargin, this._config.maxWidth)
if((width + widthBorderAndPadding) > maxWidth) {
height = (maxWidth - widthBorderAndPadding - discountMargin) / imageAspecRatio;
width = maxWidth
} else
width = (width + widthBorderAndPadding)
let headerHeight = 0,
footerHeight = 0
// as the resize is performed the modal is show, the calculate might fail
// if so, default to the default sizes
if (this._footerIsShown)
footerHeight = this._$modalFooter.outerHeight(true) || 55
if (this._titleIsShown)
headerHeight = this._$modalHeader.outerHeight(true) || 67
let borderPadding = this._padding.top + this._padding.bottom + this._border.bottom + this._border.top
//calculated each time as resizing the window can cause them to change due to Bootstraps fluid margins
let margins = parseFloat(this._$modalDialog.css('margin-top')) + parseFloat(this._$modalDialog.css('margin-bottom'));
let maxHeight = Math.min(height, $(window).height() - borderPadding - margins - headerHeight - footerHeight, this._config.maxHeight - borderPadding - headerHeight - footerHeight);
if(height > maxHeight) {
// if height > the available height, scale down the width
width = Math.ceil(maxHeight * imageAspecRatio) + widthBorderAndPadding;
}
this._$lightboxContainer.css('height', maxHeight)
this._$modalDialog.css('flex', 1).css('maxWidth', width);
let modal = this._$modal.data('bs.modal');
if (modal) {
// v4 method is mistakenly protected
try {
modal._handleUpdate();
} catch(Exception) {
modal.handleUpdate();
}
}
return this;
}
static _jQueryInterface(config) {
config = config || {}
return this.each(() => {
let $this = $(this)
let _config = $.extend(
{},
Lightbox.Default,
$this.data(),
typeof config === 'object' && config
)
new Lightbox(this, _config)
})
}
}
$.fn[NAME] = Lightbox._jQueryInterface
$.fn[NAME].Constructor = Lightbox
$.fn[NAME].noConflict = () => {
$.fn[NAME] = JQUERY_NO_CONFLICT
return Lightbox._jQueryInterface
}
return Lightbox
})(jQuery)
export default Lightbox
Zerion Mini Shell 1.0