File indexing completed on 2024-05-12 05:50:06

 /*
 Slideshow script for ubiquity-slideshow, global to all variations.
 
 * Interprets parameters passed via location.hash (in #?param1=key?param2 format)
 * Creates an animated slideshow inside the #slideshow element.
 * Automatically loads a requested locale, based on the default slides.
 * Manages slideshow controls, if requested via parameters.
 
 Assumptions are made about the design of the html document this is inside of.
 Please see slides/ubuntu/index.html for an example of this script in use.
 
 Please include this script last, after any other scripts.
 
 
 Dependencies (please load these first):
 link-core/jquery.js
 link-core/jquery.cycle.all.js
 link-core/signals.js
 */
 
 /* Pass parameters by creating a global SLIDESHOW_OPTIONS object, containing
    any options described at <http://jquery.malsup.com/cycle/options.html>
    
    The default callback for cycle.next also checks an extra autopause parameter,
    which will pause the slideshow when it reaches the end (but doesn't stop it)
    
    Signals: slideshow-loaded
             slideshow-started
             slide-opening
             slide-opened
             slide-closing
             slide-closed
 */
 
 var slideshow;
 
 var directory = {};
 var extra_directory = {};
 
 $(document).ready(function() {
         function loadExtraSlides() {
                 $.ajax({
                         type: 'GET',
                         url: 'extra/directory.jsonp',
                         dataType: 'jsonp',
                         jsonpCallback: 'ubiquitySlideshowDirectoryCb',
                         success: function(data, status, xhr) {
                                 extra_directory = $.extend(extra_directory, data);
                         },
                         complete: function(xhr, status) {
                                 slideshowReady();
                         }
                 });
         }
         
         $.ajax({
                 type: 'GET',
                 url: 'directory.jsonp',
                 dataType: 'jsonp',
                 jsonpCallback: 'ubiquitySlideshowDirectoryCb',
                 success: function(data, status, xhr) {
                         directory = $.extend(directory, data);
                 },
                 complete: function(xhr, status) {
                         loadExtraSlides();
                 }
         });
 });
 
 function slideshowReady() {
         slideshow = $('#slideshow');
         
         var slideshow_options = {
                 fx:'scrollHorz',
                 timeout:45000,
                 speed:500,
                 nowrap:false,
                 autopause:false,
                 manualTrump:false,
         };
         
         $.extend(slideshow_options, window.SLIDESHOW_OPTIONS);
         
         if ( 'rtl' in INSTANCE_OPTIONS )
                 $(document.body).addClass('rtl');
         
         var locale = INSTANCE_OPTIONS['locale'] || 'C';
         loadSlides(locale);
         
         Signals.fire('slideshow-loaded');
         
         slideshow_options.before = function(curr, next, opts) {
                 if ($(next).data('last')) {
                         $('#next-slide').addClass('disabled').fadeOut(slideshow_options.speed);
                 } else {
                         $('#next-slide').removeClass('disabled').fadeIn(slideshow_options.speed);
                 }
                 
                 if ($(next).data('first')) {
                         $('#prev-slide').addClass('disabled').fadeOut(slideshow_options.speed);
                 } else {
                         $('#prev-slide').removeClass('disabled').fadeIn(slideshow_options.speed);
                 }
                 
                 Signals.fire('slide-closing', $(curr));
                 Signals.fire('slide-opening', $(next));
         }
         
         slideshow_options.after = function(curr, next, opts) {
                 var index = opts.currSlide;
                 /* pause at last slide if requested in options */
                 if ( index == opts.slideCount - 1 && opts.autopause ) {
                         slideshow.cycle('pause'); /* slides can still be advanced manually */
                 }
                 
                 Signals.fire('slide-closed', $(curr));
                 Signals.fire('slide-opened', $(next));
         }
         
         var controls = $('#controls');
         if ( 'controls' in INSTANCE_OPTIONS ) {
                 var debug_controls = $('#debug-controls');
                 if (debug_controls.length > 0) {
                         debug_controls.show();
                         controls = debug_controls;
                 }
         }
         slideshow_options.prev = controls.children('#prev-slide');
         slideshow_options.next = controls.children('#next-slide');
         
         if ( 'slideNumber' in INSTANCE_OPTIONS )
                 slideshow_options.startingSlide = INSTANCE_OPTIONS['slideNumber'];
         
         if (slideshow.children().length > 1) {
                 slideshow.cycle(slideshow_options)
                 Signals.fire('slideshow-started');
         } else {
                 $('#prev-slide').addClass('disabled').hide();
                 $('#next-slide').addClass('disabled').hide();
         }
 };
 
 function getTranslatedFile(locale, file_name, file_category) {
         var territory = locale.split(".",1)[0];
         var language = territory.split("_",1)[0];
         
         return tryFileLocale(locale, file_name, file_category) ||
                tryFileLocale(territory, file_name, file_category) ||
                tryFileLocale(language, file_name, file_category) ||
                tryFileLocale('C', file_name, file_category);
         
         function tryFileLocale(locale, file_name, file_category) {
                 if (translationFileExists(extra_directory, locale, file_name, file_category)) {
                         // extra_directory can override slides from any locale, including C
                         return './extra/'+locale+'/'+file_name;
                 } else if (locale == 'C') {
                         return './'+file_name;
                 } else if (translationFileExists(directory, locale, file_name, file_category)) {
                         return './l10n/'+locale+'/'+file_name;
                 } else {
                         return undefined;
                 }
         }
         
         function translationFileExists(directory, locale, file_name, file_category) {
                 return locale in directory &&
                        file_category in directory[locale] &&
                        directory[locale][file_category].indexOf(file_name) >= 0;
         }
 }
 
 function loadSlides(locale) {
         var selected_slidesets = []
         if ( 'slidesets' in INSTANCE_OPTIONS )
                 selected_slidesets = INSTANCE_OPTIONS['slidesets'].split(' ');
         
         function slideIsVisible(slide) {
                 var slidesets = $(slide).data('slidesets');
                 var is_visible = true;
                 if ( slidesets !== undefined ) {
                         is_visible = false;
                         $.each(slidesets.split(' '), function(index, slideset) {
                                 if ($.inArray(slideset, selected_slidesets) >= 0) {
                                         is_visible = true;
                                 }
                         });
                 }
                 return is_visible;
         }
         
         function translateSlideContents(locale, contents) {
                 // Warning: this assumes all images are local.
                 // TODO: Only translate images selected by $(img.translatable)
                 var images = $('img', contents);
                 $.each(images, function(index, image) {
                         var image_name = $(image).attr('src');
                         var translated_image = getTranslatedFile(locale, image_name, 'media');
                         $(image).attr('src', translated_image);
                 });
         }
         
         slideshow.children('div').each(function(index, slide) {
                 if ( slideIsVisible($(slide)) ) {
                         var slide_name = $(slide).children('a').attr('href');
                         var translated_slide = getTranslatedFile(locale, slide_name, 'slides');
                         
                         $.ajax({
                                 type: 'GET',
                                 url: translated_slide,
                                 cache: false,
                                 async: false,
                                 success: function(data, status, xhr) {
                                         $(data).appendTo(slide);
                                         translateSlideContents(locale, slide);
                                 }
                         });
                 } else {
                         $(slide).detach();
                 }
         });
         
         slideshow.children('div').first().data('first', true);
         slideshow.children('div').last().data('last', true);
 }