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ekko-lightbox.coffee
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###
Lightbox for Bootstrap 3 by @ashleydw
https://github.com/ashleydw/lightbox
License: https://github.com/ashleydw/lightbox/blob/master/LICENSE
###
"use strict";
$ = jQuery
EkkoLightbox = ( element, options ) ->
@options = $.extend({
title : null
footer : null
remote : null
}, $.fn.ekkoLightbox.defaults, options || {})
@$element = $(element)
content = ''
@modal_id = if @options.modal_id then @options.modal_id else 'ekkoLightbox-' + Math.floor((Math.random() * 1000) + 1)
header = '<div class="modal-header"'+(if @options.title or @options.always_show_close then '' else ' style="display:none"')+'><button type="button" class="close" data-dismiss="modal" aria-hidden="true">×</button><h4 class="modal-title">' + (@options.title || " ") + '</h4></div>'
footer = '<div class="modal-footer"'+(if @options.footer then '' else ' style="display:none"')+'>' + @options.footer + '</div>'
$(document.body).append '<div id="' + @modal_id + '" class="ekko-lightbox modal fade" tabindex="-1"><div class="modal-dialog"><div class="modal-content">' + header + '<div class="modal-body"><div class="ekko-lightbox-container"><div></div></div></div>' + footer + '</div></div></div>'
@modal = $ '#' + @modal_id
@modal_dialog = @modal.find('.modal-dialog').first()
@modal_content = @modal.find('.modal-content').first()
@modal_body = @modal.find('.modal-body').first()
@lightbox_container = @modal_body.find('.ekko-lightbox-container').first()
@lightbox_body = @lightbox_container.find('> div:first-child').first()
@modal_arrows = null
@border = {
top: parseFloat(@modal_dialog.css('border-top-width')) + parseFloat(@modal_content.css('border-top-width')) + parseFloat(@modal_body.css('border-top-width'))
right: parseFloat(@modal_dialog.css('border-right-width')) + parseFloat(@modal_content.css('border-right-width')) + parseFloat(@modal_body.css('border-right-width'))
bottom: parseFloat(@modal_dialog.css('border-bottom-width')) + parseFloat(@modal_content.css('border-bottom-width')) + parseFloat(@modal_body.css('border-bottom-width'))
left: parseFloat(@modal_dialog.css('border-left-width')) + parseFloat(@modal_content.css('border-left-width')) + parseFloat(@modal_body.css('border-left-width'))
}
@padding = {
top: parseFloat(@modal_dialog.css('padding-top')) + parseFloat(@modal_content.css('padding-top')) + parseFloat(@modal_body.css('padding-top'))
right: parseFloat(@modal_dialog.css('padding-right')) + parseFloat(@modal_content.css('padding-right')) + parseFloat(@modal_body.css('padding-right'))
bottom: parseFloat(@modal_dialog.css('padding-bottom')) + parseFloat(@modal_content.css('padding-bottom')) + parseFloat(@modal_body.css('padding-bottom'))
left: parseFloat(@modal_dialog.css('padding-left')) + parseFloat(@modal_content.css('padding-left')) + parseFloat(@modal_body.css('padding-left'))
}
@modal
.on('show.bs.modal', @options.onShow.bind(@))
.on 'shown.bs.modal', =>
@modal_shown()
@options.onShown.call(@)
.on('hide.bs.modal', @options.onHide.bind(@))
.on 'hidden.bs.modal', =>
if @gallery
$(document).off 'keydown.ekkoLightbox'
@modal.remove()
@options.onHidden.call(@)
.modal 'show', options
@modal
EkkoLightbox.prototype = {
modal_shown: ->
# when the modal first loads
@error 'No remote target given'
else
@gallery = @$element.data('gallery')
if @gallery
# parents('document.body') fails for some reason, so do this manually
if this.options.gallery_parent_selector == 'document.body' || this.options.gallery_parent_selector == ''
@gallery_items = $(document.body).find('*[data-toggle="lightbox"][data-gallery="' + @gallery + '"]')
else
@gallery_items = @$element.parents(this.options.gallery_parent_selector).first().find('*[data-toggle="lightbox"][data-gallery="' + @gallery + '"]')
@gallery_index = @gallery_items.index(@$element)
$(document).on 'keydown.ekkoLightbox', @navigate.bind(@)
# add the directional arrows to the modal
if @options.directional_arrows && @gallery_items.length > 1
@lightbox_container.prepend('<div class="ekko-lightbox-nav-overlay"><a href="#" class="'+@strip_stops(@options.left_arrow_class)+'"></a><a href="#" class="'+@strip_stops(@options.right_arrow_class)+'"></a></div>')
@modal_arrows = @lightbox_container.find('div.ekko-lightbox-nav-overlay').first()
@lightbox_container.find('a'+@strip_spaces(@options.left_arrow_class)).on 'click', (event) =>
event.preventDefault()
do @navigate_left
@lightbox_container.find('a'+@strip_spaces(@options.right_arrow_class)).on 'click', (event) =>
event.preventDefault()
do @navigate_right
if @options.type
if @options.type == 'image'
@preloadImage(@options.remote, true)
else if @options.type == 'youtube' && video_id = @getYoutubeId(@options.remote)
@showYoutubeVideo(video_id)
else if @options.type == 'vimeo'
@showVimeoVideo(@options.remote)
else
@error "Could not detect remote target type. Force the type using data-type=\"image|youtube|vimeo\""
else
@detectRemoteType(@options.remote)
strip_stops: (str) ->
str.replace(/\./g, '')
strip_spaces: (str) ->
str.replace(/\s/g, '')
isImage: (str) ->
str.match(/(^data:image\/.*,)|(\.(jp(e|g|eg)|gif|png|bmp|webp|svg)((\?|#).*)?$)/i)
isSwf: (str) ->
str.match(/\.(swf)((\?|#).*)?$/i)
getYoutubeId: (str) ->
match = str.match(/^.*(youtu.be\/|v\/|u\/\w\/|embed\/|watch\?v=|\&v=)([^#\&\?]*).*/);
if match && match[2].length == 11 then match[2] else false
getVimeoId: (str) ->
if str.indexOf('vimeo') > 0 then str else false
navigate : ( event ) ->
event = event || window.event;
if event.keyCode == 39 || event.keyCode == 37
if event.keyCode == 39
do @navigate_right
else if event.keyCode == 37
do @navigate_left
navigate_left: ->
if @gallery_items.length == 1 then return
if @gallery_index == 0 then @gallery_index = @gallery_items.length-1 else @gallery_index-- #circular
@$element = $(@gallery_items.get(@gallery_index))
@updateTitleAndFooter()
src = @$element.attr('data-remote') || @$element.attr('href')
@detectRemoteType(src, @$element.attr('data-type'))
navigate_right: ->
if @gallery_items.length == 1 then return
if @gallery_index == @gallery_items.length-1 then @gallery_index = 0 else @gallery_index++ #circular
@$element = $(@gallery_items.get(@gallery_index))
src = @$element.attr('data-remote') || @$element.attr('href')
@updateTitleAndFooter()
@detectRemoteType(src, @$element.attr('data-type'))
if @gallery_index + 1 < @gallery_items.length
next = $(@gallery_items.get(@gallery_index + 1), false)
src = next.attr('data-remote') || next.attr('href')
if next.attr('data-type') == 'image' || @isImage(src)
@preloadImage(src, false)
detectRemoteType: (src, type) ->
if type == 'image' || @isImage(src)
@options.type = 'image'
@preloadImage(src, true)
else if type == 'youtube' || video_id = @getYoutubeId(src)
@options.type = 'youtube'
@showYoutubeVideo(video_id)
else if type == 'vimeo' || video_id = @getVimeoId(src)
@options.type = 'vimeo'
@showVimeoVideo(video_id)
else
@error "Could not detect remote target type. Force the type using data-type=\"image|youtube|vimeo\""
updateTitleAndFooter: ->
header = @modal_content.find('.modal-header')
footer = @modal_content.find('.modal-footer')
title = @$element.data('title') || ""
caption = @$element.data('footer') || ""
if title or @options.always_show_close then header.css('display', '').find('.modal-title').html(title || " ") else header.css('display', 'none')
if caption then footer.css('display', '').html(caption) else footer.css('display', 'none')
@
showLoading : ->
@lightbox_body.html '<div class="modal-loading">Loading..</div>'
@
showYoutubeVideo : (id) ->
aspectRatio = 560/315
width = @$element.data('width') || 560
width = @checkDimensions width
height = width / aspectRatio
@resize width
@lightbox_body.html '<iframe width="'+width+'" height="'+height+'" src="//www.youtube.com/embed/' + id + '?badge=0&autoplay=1&html5=1" frameborder="0" allowfullscreen></iframe>'
if @modal_arrows #hide the arrows when showing video
@modal_arrows.css 'display', 'none'
showVimeoVideo : (id) ->
aspectRatio = 500/281
width = @$element.data('width') || 560
width = @checkDimensions width
height = width / aspectRatio
@resize width
@lightbox_body.html '<iframe width="'+width+'" height="'+height+'" src="' + id + '?autoplay=1" frameborder="0" allowfullscreen></iframe>'
if @modal_arrows #hide the arrows when showing video
@modal_arrows.css 'display', 'none'
error : ( message ) ->
@lightbox_body.html message
@
preloadImage : ( src, onLoadShowImage) ->
img = new Image()
if !onLoadShowImage? || onLoadShowImage == true
img.onload = =>
image = $('<img />')
image.attr('src', img.src)
image.addClass('img-responsive')
@lightbox_body.html image
if @modal_arrows #show the arrows
@modal_arrows.css 'display', 'block'
@resize img.width
img.onerror = =>
@error 'Failed to load image: ' + src
img.src = src
img
resize : ( width ) ->
#resize the dialog based on the width given, and adjust the directional arrow padding
width_total = width + @border.left + @padding.left + @padding.right + @border.right
@modal_dialog.css('width', 'auto') .css('max-width', width_total);
@lightbox_container.find('a').css 'padding-top', ->
$(@).parent().height() / 2
@
checkDimensions: (width) ->
#check that the width given can be displayed, if not return the maximum size that can be
width_total = width + @border.left + @padding.left + @padding.right + @border.right
body_width = document.body.clientWidth
if width_total > body_width
width = @modal_body.width()
width
close : ->
@modal.modal('hide');
}
$.fn.ekkoLightbox = ( options ) ->
@each ->
$this = $(this)
options = $.extend({
remote : $this.attr('data-remote') || $this.attr('href')
gallery_parent_selector : $this.attr('data-parent')
type : $this.attr('data-type')
}, options, $this.data())
new EkkoLightbox(@, options)
@
$.fn.ekkoLightbox.defaults = {
gallery_parent_selector: '*:not(.row)'
left_arrow_class: '.glyphicon .glyphicon-chevron-left' #include class . here - they are stripped out later
right_arrow_class: '.glyphicon .glyphicon-chevron-right' #include class . here - they are stripped out later
directional_arrows: true #display the left / right arrows or not
type: null #force the lightbox into image / youtube mode. if null, or not image|youtube|vimeo; detect it
always_show_close: true #always show the close button, even if there is no title
onShow : ->
onShown : ->
onHide : ->
onHidden : ->
}