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Immediately executing function passing in JQuery so not to conflict\r\n// with other libs that use $\r\n\r\n(function($) {\r\n \"use strict\";\r\n\r\n class BodModal {\r\n\r\n constructor(modal) {\r\n this.$window = $(window);\r\n this.$document = $(document);\r\n this.$modal = $(modal);\r\n this.$image = this.$modal.find('img');\r\n this.$expand = this.$modal.find('.bod-expand-icon');\r\n this.slideCount = 0;\r\n this.activeSlide = 0;\r\n this.displayTitle = this.$modal.attr('data-title');\r\n this.timer = '';\r\n this.disableClick = false;\r\n\r\n\r\n // data-interval contains slide auto play interval in seconds i.e. time between slides\r\n // 0 = no autoplay, undefined value defaults to 5 seconds \r\n this.slideInterval = $(modal).attr(\"data-interval\");\r\n this.slideInterval == undefined ? this.slideInterval = 5000 : this.slideInterval = parseInt(this.slideInterval) * 1000;\r\n this.autoplay = '';\r\n this.swipeStarted = false;\r\n\r\n this.openModal = this.openModal.bind(this);\r\n this.closeModal = this.closeModal.bind(this);\r\n this.prevSlide = this.prevSlide.bind(this);\r\n this.nextSlide = this.nextSlide.bind(this);\r\n this.imageTitle = this.imageTitle.bind(this);\r\n this.displaySlide = this.displaySlide.bind(this);\r\n this.navLink = this.navLink.bind(this);\r\n this.debounceresize = this.debounceresize.bind(this);\r\n this.resize = this.resize.bind(this);\r\n this.triggerSlide = this.triggerSlide.bind(this);\r\n this.startSwipe = this.startSwipe.bind(this);\r\n this.endSwipe = this.endSwipe.bind(this);\r\n this.cancelSwipe = this.cancelSwipe.bind(this);\r\n\r\n // click on one of the modal images \r\n this.$image.on('click touchstart', this.openModal);\r\n this.$expand.on('click touchstart', this.openModal);\r\n\r\n }\r\n\r\n\r\n // Inserts modal html in document and displays first slide\r\n openModal(evt) {\r\n evt.preventDefault();\r\n evt.stopPropagation();\r\n\r\n let filename = '';\r\n if ($(evt.target).hasClass('bod-expand-icon')) {\r\n filename = this.constructor.extractFile($(evt.target).find('img').attr('src'));\r\n } else {\r\n // get filename of img that user click on to trigger modal\r\n filename = this.constructor.extractFile(evt.target.src);\r\n }\r\n\r\n let html = this.buildModalHtml(filename);\r\n\r\n this.$document.find('body').append(html);\r\n\r\n // handle image title\r\n\r\n if (this.displayTitle) {\r\n // need to wait for html append to finish rendering\r\n setTimeout(() => {\r\n this.imageTitle(true);\r\n this.$window.on('resize', this.debounceresize);\r\n }, 500);\r\n }\r\n\r\n // event handler to close modal \r\n $('.bodCloseIcon').on('click touchstart', this.closeModal);\r\n\r\n // handle mobile swipe\r\n $('.bodOpenModal').on('touchstart', this.startSwipe);\r\n $('.bodOpenModal').on('touchend', this.endSwipe);\r\n $('.bodOpenModal').on('touchcancel', this.cancelSwipe);\r\n\r\n // next and previous slide events\r\n $('.bodNextSlide').on('click touchstart', { cancelAutoPlay: true }, this.nextSlide);\r\n $('.bodPrevSlide').on('click touchstart', { cancelAutoPlay: true }, this.prevSlide);\r\n\r\n // slide nav link events \r\n $('.bodNavLink').on('click touchstart', this.navLink);\r\n\r\n // initiate autoplay\r\n if (this.slideInterval > 0) {\r\n this.autoplay = setTimeout(this.triggerSlide, this.slideInterval);\r\n }\r\n }\r\n\r\n // handle swipe left and right on touchscreen devices\r\n\r\n // start tracking the swipe\r\n startSwipe(event) {\r\n this.swipeStartX = event.changedTouches[0].pageX;\r\n this.swipeStartY = event.changedTouches[0].pageY;\r\n this.swipeStarted = true;\r\n }\r\n\r\n endSwipe(event) {\r\n if (this.swipeStarted) {\r\n // check for left or right swipe. Must swipe by at least 30px \r\n // and cannot be more than 30px up or down\r\n\r\n // check for swipe left\r\n if ((this.swipeStartX > event.changedTouches[0].pageX) &&\r\n (this.swipeStartX - event.changedTouches[0].pageX > 30)) {\r\n\r\n if (!BodModal.checkYSwipe(this.swipeStartY, event.changedTouches[0].pageY)) {\r\n if (this.autoplay) clearTimeout(this.autoplay);\r\n this.nextSlide();\r\n }\r\n\r\n // check for swipe right \r\n } else if ((this.swipeStartX < event.changedTouches[0].pageX) &&\r\n (event.changedTouches[0].pageX - this.swipeStartX > 30)) {\r\n\r\n if (!BodModal.checkYSwipe(this.swipeStartY, event.changedTouches[0].pageY)) {\r\n if (this.autoplay) clearTimeout(this.autoplay);\r\n this.prevSlide();\r\n }\r\n\r\n }\r\n\r\n }\r\n this.swipeStarted = false;\r\n }\r\n\r\n // cancel tracking the swipe\r\n cancelSwipe() {\r\n this.swipeStarted = false;\r\n }\r\n\r\n // use recursive setTimeout so create loop of slides\r\n // better than setInterval because its more precise, does not\r\n // start timeout until adter nextSlide completes. \r\n\r\n triggerSlide() {\r\n this.nextSlide();\r\n this.autoplay = setTimeout(this.triggerSlide, this.slideInterval);\r\n }\r\n\r\n\r\n // Make sure we don't refresh title position until end of resize\r\n debounceresize() {\r\n\r\n // Make title invisible if timer not set. It looks cleaner that way\r\n // and then we stop resizing we will display it again. We also \r\n // move title to top left so that width is not impacted by resize \r\n if (this.$curTitle && !this.timer) {\r\n this.$curTitle.removeClass('bodShowTitle');\r\n this.$curTitle.css({ \"top\": `0`, \"left\": `0` });\r\n }\r\n\r\n // debounce : don't keep calling resize box method, only call if not resized for 0.25s\r\n clearTimeout(this.timer);\r\n this.timer = setTimeout(this.resize, 250);\r\n\r\n }\r\n\r\n\r\n // Called when screen stopped resizing and we can display the title\r\n // in its correct location\r\n resize() {\r\n this.timer = '';\r\n // on resize we have to recalc and display the image title position\r\n this.imageTitle(false);\r\n\r\n }\r\n\r\n // Construct the html that displays the modal slideshow\r\n // filename - string - the filename of the active slide\r\n // return - string - html to display modal\r\n buildModalHtml(filename) {\r\n this.slideCount = 0;\r\n this.activeSlide = 0;\r\n\r\n let html = \"\";\r\n html += \"
\";\r\n html += \"
X
\";\r\n html += \"
\";\r\n\r\n // output slides \r\n\r\n let that = this;\r\n this.$modal.find('img').each(function() {\r\n that.slideCount++;\r\n let imageAlt = $(this).attr(\"alt\");\r\n let imageHref = $(this).parent().attr('href');\r\n\r\n let curFilename = that.constructor.extractFile(imageHref);\r\n if (curFilename === filename) {\r\n html += \"
\";\r\n that.activeSlide = that.slideCount;\r\n } else {\r\n html += \"
\";\r\n }\r\n\r\n html += \"\" + imageAlt + \"\";\r\n // output title\r\n\r\n if (that.displayTitle) {\r\n let title = $(this).parent().attr('title');\r\n if (title) {\r\n html += `
${title}
`;\r\n }\r\n }\r\n html += \"
\";\r\n\r\n });\r\n\r\n // prev and next links\r\n\r\n html += \"
\";\r\n html += \"
\";\r\n\r\n html += \"
\";\r\n\r\n // output title\r\n\r\n if (that.displayTitle) {\r\n let title = $(this).parent().attr('title');\r\n if (title) {\r\n html += `
${title}
`;\r\n }\r\n }\r\n\r\n // Output the nav icons \r\n\r\n html += `
`;\r\n html += `
    `;\r\n\r\n for (let i = 1; i <= this.slideCount; i++) {\r\n if (i === this.activeSlide) {\r\n html += `
  • `;\r\n } else {\r\n html += `
  • `;\r\n }\r\n }\r\n\r\n html += `
`;\r\n html += `
`;\r\n\r\n html += `
`;\r\n\r\n return html;\r\n }\r\n\r\n // Check if user swiped up or down more than 30px\r\n // startY - number - starting Y position for swipe\r\n // endY - number - ending Y position for swipe\r\n // return - bool - true = detected swipe up or down \r\n\r\n static checkYSwipe(startY, endY) {\r\n\r\n if ((startY > endY) && (startY - endY > 30)) {\r\n return true;\r\n }\r\n\r\n if ((startY < endY) && (endY - startY > 30)) {\r\n return true;\r\n }\r\n\r\n return false;\r\n\r\n }\r\n\r\n // Extracts filename from full path\r\n // path - string - file path e.g. https://test.com/index.html\r\n // return - string - filename e.g. index.html\r\n static extractFile(path) {\r\n let pathParts = path.split(\"/\");\r\n return pathParts[pathParts.length - 1];\r\n }\r\n\r\n\r\n // output the image\r\n // newSlide - boolean - first time displaying a slide\r\n imageTitle(newSlide = false) {\r\n\r\n if (this.displayTitle) {\r\n\r\n if (newSlide) {\r\n this.$curImage = $('.bodActiveSlide img');\r\n this.$curTitle = $('.bodActiveSlide .bodTitle');\r\n $('.bodTitle').removeClass('bodShowTitle');\r\n }\r\n\r\n if (this.$curTitle) {\r\n\r\n const hPadBorder = this.$curImage.outerHeight() - this.$curImage.height();\r\n const wPadBorder = this.$curImage.outerWidth() - this.$curImage.width();\r\n\r\n if (this.displayTitle == 'left') {\r\n\r\n const topOffset = this.$curImage.position().top + (this.$curImage.height() - this.$curTitle.outerHeight());\r\n const leftOffset = this.$curImage.position().left + wPadBorder;\r\n this.$curTitle.css({ \"top\": `${topOffset}px`, \"left\": `${leftOffset}px` });\r\n\r\n } else if (this.displayTitle == 'right') {\r\n\r\n const topOffset = this.$curImage.position().top + (this.$curImage.height() - this.$curTitle.outerHeight());\r\n const leftOffset = this.$curImage.position().left + this.$curImage.width() - this.$curTitle.outerWidth();\r\n this.$curTitle.css({ \"top\": `${topOffset}px`, \"left\": `${leftOffset}px` });\r\n\r\n } else {\r\n\r\n this.$curTitle.css({ \"top\": \"50%\", \"left\": \"50%\", \"transform\": \"translate(-50%,-50%)\" });\r\n\r\n }\r\n this.$curTitle.addClass('bodShowTitle');\r\n }\r\n\r\n }\r\n }\r\n\r\n\r\n // called when modal closed by user \r\n closeModal() {\r\n\r\n // remove any events \r\n $('.bodOpenModal').off('touchstart');\r\n $('.bodOpenModal').off('touchend');\r\n $('.bodOpenModel').off('click');\r\n $('.bodOpenModal img, .bodNextSlide').off('click touchstart');\r\n $('.bodPrevSlide').off('click touchstart');\r\n $('.bodNavLink').off('click touchstart');\r\n this.$window.off('resize', this.debounceresize);\r\n\r\n // cancel autoplay\r\n if (this.autoplay) clearTimeout(this.autoplay);\r\n\r\n // finish cleanup by removing modal html code previously inserted\r\n this.$document.find('.bodOpenModal').remove();\r\n }\r\n\r\n\r\n prevSlide(evt) {\r\n if (evt) {\r\n if (typeof evt.data.cancelAutoPlay !== 'undefined') {\r\n if (this.autoplay && evt.data.cancelAutoPlay) clearTimeout(this.autoplay);\r\n }\r\n\r\n // Code to stop both touchstart and click events firing\r\n if (this.disableClick == true && evt.type == 'click') {\r\n this.disableClick = false;\r\n return false;\r\n } else if (evt.type == 'touchstart') {\r\n this.disableClick = true;\r\n }\r\n }\r\n\r\n --this.activeSlide < 1 ? this.activeSlide = this.slideCount : this.activeSlide;\r\n this.displaySlide(this.activeSlide);\r\n if (evt) evt.stopPropagation();\r\n }\r\n\r\n\r\n nextSlide(evt) {\r\n if (evt) {\r\n if (typeof evt.data.cancelAutoPlay !== 'undefined') {\r\n if (this.autoplay && evt.data.cancelAutoPlay) clearTimeout(this.autoplay);\r\n }\r\n\r\n // Code to stop both touchstart and click events firing\r\n if (this.disableClick == true && evt.type == 'click') {\r\n this.disableClick = false;\r\n return false;\r\n } else if (evt.type == 'touchstart') {\r\n this.disableClick = true;\r\n }\r\n }\r\n\r\n ++this.activeSlide > this.slideCount ? this.activeSlide = 1 : this.activeSlide;\r\n this.displaySlide(this.activeSlide);\r\n if (evt) evt.stopPropagation();\r\n }\r\n\r\n\r\n navLink(evt) {\r\n this.activeSlide = parseInt($(evt.target).attr(\"data-slide-no\"));\r\n this.displaySlide(this.activeSlide);\r\n evt.stopPropagation();\r\n }\r\n\r\n // Display the next slide. Triggered by navlink, next prev button\r\n // image click or autoplay.\r\n // activeslide - number - slide to display\r\n displaySlide(activeSlide) {\r\n\r\n // hide the slide title and move to top right\r\n if (this.$curTitle) {\r\n this.$curTitle.removeClass('bodShowTitle');\r\n this.$curTitle.css({ \"top\": `0`, \"left\": `0` });\r\n }\r\n\r\n // remove slide indicator from nav links\r\n $('.bodNavLink').removeClass('bodActiveSlide');\r\n\r\n // hide current slide\r\n $('.bodModal').removeClass('bodActiveSlide');\r\n\r\n // show new activeslide \r\n $(`.bodModal:nth-of-type(${activeSlide})`).addClass('bodActiveSlide');\r\n\r\n // highlight current slide on nav links\r\n $(`.bodNavLink:nth-of-type(${activeSlide})`).addClass('bodActiveSlide');\r\n\r\n // show title for new slide\r\n if (this.displayTitle) {\r\n this.imageTitle(true);\r\n }\r\n }\r\n\r\n }\r\n\r\n\r\n $(function() {\r\n // loop round all the models on the page creating an instance\r\n // for each one adding to an array\r\n\r\n window.bodModals = [];\r\n $('.bod-modal').each(function() {\r\n bodModals.push(new BodModal(this));\r\n });\r\n });\r\n\r\n})(jQuery);"]}