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/* jshint onevar:false, loopfunc:true */ |
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/* global jetpackSlideshowSettings, escape */ |
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|
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function JetpackSlideshow( element, transition, autostart ) { |
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this.element = element; |
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this.images = []; |
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this.controls = {}; |
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this.transition = transition || 'fade'; |
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this.autostart = autostart; |
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} |
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|
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JetpackSlideshow.prototype.showLoadingImage = function( toggle ) { |
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if ( toggle ) { |
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this.loadingImage_ = document.createElement( 'div' ); |
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this.loadingImage_.className = 'slideshow-loading'; |
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var img = document.createElement( 'img' ); |
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img.src = jetpackSlideshowSettings.spinner; |
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this.loadingImage_.appendChild( img ); |
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this.loadingImage_.appendChild( this.makeZeroWidthSpan() ); |
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this.element.append( this.loadingImage_ ); |
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} else if ( this.loadingImage_ ) { |
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this.loadingImage_.parentNode.removeChild( this.loadingImage_ ); |
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this.loadingImage_ = null; |
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} |
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}; |
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|
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JetpackSlideshow.prototype.init = function() { |
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this.showLoadingImage( true ); |
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|
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var self = this; |
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// Set up DOM. |
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for ( var i = 0; i < this.images.length; i++ ) { |
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var imageInfo = this.images[ i ]; |
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var img = document.createElement( 'img' ); |
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img.src = imageInfo.src; |
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img.title = typeof imageInfo.title !== 'undefined' ? imageInfo.title : ''; |
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img.alt = typeof imageInfo.alt !== 'undefined' ? imageInfo.alt : ''; |
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img.align = 'middle'; |
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img.setAttribute( 'itemprop', 'image' ); |
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img.nopin = 'nopin'; |
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var caption = document.createElement( 'div' ); |
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caption.className = 'slideshow-slide-caption'; |
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caption.setAttribute( 'itemprop', 'caption description' ); |
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caption.innerHTML = imageInfo.caption; |
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var container = document.createElement( 'div' ); |
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container.className = 'slideshow-slide'; |
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container.setAttribute( 'itemprop', 'associatedMedia' ); |
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container.setAttribute( 'itemscope', '' ); |
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container.setAttribute( 'itemtype', 'https://schema.org/ImageObject' ); |
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|
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// Hide loading image once first image has loaded. |
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if ( i === 0 ) { |
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if ( img.complete ) { |
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// IE, image in cache |
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setTimeout( function() { |
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self.finishInit_(); |
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}, 1 ); |
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} else { |
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jQuery( img ).load( function() { |
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self.finishInit_(); |
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} ); |
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} |
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} |
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container.appendChild( img ); |
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// I'm not sure where these were coming from, but IE adds |
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// bad values for width/height for portrait-mode images |
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img.removeAttribute( 'width' ); |
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img.removeAttribute( 'height' ); |
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container.appendChild( this.makeZeroWidthSpan() ); |
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container.appendChild( caption ); |
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this.element.append( container ); |
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} |
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}; |
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|
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JetpackSlideshow.prototype.makeZeroWidthSpan = function() { |
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var emptySpan = document.createElement( 'span' ); |
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emptySpan.className = 'slideshow-line-height-hack'; |
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// Having a NBSP makes IE act weird during transitions, but other |
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// browsers ignore a text node with a space in it as whitespace. |
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if ( -1 !== window.navigator.userAgent.indexOf( 'MSIE ' ) ) { |
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emptySpan.appendChild( document.createTextNode( ' ' ) ); |
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} else { |
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emptySpan.innerHTML = ' '; |
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} |
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return emptySpan; |
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}; |
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|
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JetpackSlideshow.prototype.finishInit_ = function() { |
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this.showLoadingImage( false ); |
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this.renderControls_(); |
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|
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var self = this; |
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if ( this.images.length > 1 ) { |
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// Initialize Cycle instance. |
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this.element.cycle( { |
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fx: this.transition, |
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prev: this.controls.prev, |
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next: this.controls.next, |
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timeout: jetpackSlideshowSettings.speed, |
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slideExpr: '.slideshow-slide', |
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onPrevNextEvent: function() { |
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return self.onCyclePrevNextClick_.apply( self, arguments ); |
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}, |
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} ); |
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|
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var slideshow = this.element; |
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|
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if ( ! this.autostart ) { |
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slideshow.cycle( 'pause' ); |
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jQuery( this.controls.stop ).removeClass( 'running' ); |
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jQuery( this.controls.stop ).addClass( 'paused' ); |
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} |
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|
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jQuery( this.controls.stop ).click( function() { |
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var button = jQuery( this ); |
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if ( ! button.hasClass( 'paused' ) ) { |
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slideshow.cycle( 'pause' ); |
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button.removeClass( 'running' ); |
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button.addClass( 'paused' ); |
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} else { |
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button.addClass( 'running' ); |
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button.removeClass( 'paused' ); |
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slideshow.cycle( 'resume', true ); |
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} |
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return false; |
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} ); |
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} else { |
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this.element.children( ':first' ).show(); |
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this.element.css( 'position', 'relative' ); |
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} |
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this.initialized_ = true; |
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}; |
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|
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JetpackSlideshow.prototype.renderControls_ = function() { |
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if ( this.controlsDiv_ ) { |
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return; |
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} |
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|
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var controlsDiv = document.createElement( 'div' ); |
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controlsDiv.className = 'slideshow-controls'; |
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|
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var controls = [ 'prev', 'stop', 'next' ]; |
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for ( var i = 0; i < controls.length; i++ ) { |
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var controlName = controls[ i ]; |
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var a = document.createElement( 'a' ); |
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a.href = '#'; |
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controlsDiv.appendChild( a ); |
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this.controls[ controlName ] = a; |
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} |
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this.element.append( controlsDiv ); |
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this.controlsDiv_ = controlsDiv; |
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}; |
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|
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JetpackSlideshow.prototype.onCyclePrevNextClick_ = function( isNext, i /*, slideElement*/ ) { |
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// If blog_id not present don't track page views |
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if ( ! jetpackSlideshowSettings.blog_id ) { |
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return; |
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} |
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|
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var postid = this.images[ i ].id; |
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var stats = new Image(); |
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stats.src = |
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document.location.protocol + |
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'//pixel.wp.com/g.gif?host=' + |
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escape( document.location.host ) + |
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'&rand=' + |
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Math.random() + |
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'&blog=' + |
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jetpackSlideshowSettings.blog_id + |
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'&subd=' + |
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jetpackSlideshowSettings.blog_subdomain + |
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'&user_id=' + |
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jetpackSlideshowSettings.user_id + |
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'&post=' + |
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postid + |
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'&ref=' + |
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escape( document.location ); |
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}; |
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|
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( function( $ ) { |
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function jetpack_slideshow_init() { |
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$( '.jetpack-slideshow-noscript' ).remove(); |
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|
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$( '.jetpack-slideshow' ).each( function() { |
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var container = $( this ); |
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|
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if ( container.data( 'processed' ) ) { |
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return; |
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} |
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|
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var slideshow = new JetpackSlideshow( |
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container, |
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container.data( 'trans' ), |
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container.data( 'autostart' ) |
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); |
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slideshow.images = container.data( 'gallery' ); |
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slideshow.init(); |
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|
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container.data( 'processed', true ); |
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} ); |
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} |
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|
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$( document ).ready( jetpack_slideshow_init ); |
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$( 'body' ).on( 'post-load', jetpack_slideshow_init ); |
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} )( jQuery ); |
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|
