Adding presentation of Parallelization in EO, dated from July, 18th to tutorial section.
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Benjamin Bouvier
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eo/tutorial/Parallelization/js/deck.hash.js
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eo/tutorial/Parallelization/js/deck.hash.js
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/*!
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Deck JS - deck.hash
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Copyright (c) 2011 Caleb Troughton
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Dual licensed under the MIT license and GPL license.
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https://github.com/imakewebthings/deck.js/blob/master/MIT-license.txt
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https://github.com/imakewebthings/deck.js/blob/master/GPL-license.txt
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*/
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/*
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This module adds deep linking to individual slides, enables internal links
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to slides within decks, and updates the address bar with the hash as the user
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moves through the deck. A permalink anchor is also updated. Standard themes
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hide this link in browsers that support the History API, and show it for
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those that do not. Slides that do not have an id are assigned one according to
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the hashPrefix option. In addition to the on-slide container state class
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kept by core, this module adds an on-slide state class that uses the id of each
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slide.
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*/
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(function ($, deck, window, undefined) {
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var $d = $(document),
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$window = $(window),
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/* Collection of internal fragment links in the deck */
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$internals,
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/*
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Internal only function. Given a string, extracts the id from the hash,
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matches it to the appropriate slide, and navigates there.
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*/
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goByHash = function(str) {
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var id = str.substr(str.indexOf("#") + 1),
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slides = $[deck]('getSlides');
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$.each(slides, function(i, $el) {
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if ($el.attr('id') === id) {
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$[deck]('go', i);
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return false;
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}
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});
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// If we don't set these to 0 the container scrolls due to hashchange
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$[deck]('getContainer').scrollLeft(0).scrollTop(0);
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};
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/*
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Extends defaults/options.
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options.selectors.hashLink
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The element matching this selector has its href attribute updated to
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the hash of the current slide as the user navigates through the deck.
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options.hashPrefix
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Every slide that does not have an id is assigned one at initialization.
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Assigned ids take the form of hashPrefix + slideIndex, e.g., slide-0,
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slide-12, etc.
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options.preventFragmentScroll
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When deep linking to a hash of a nested slide, this scrolls the deck
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container to the top, undoing the natural browser behavior of scrolling
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to the document fragment on load.
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*/
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$.extend(true, $[deck].defaults, {
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selectors: {
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hashLink: '.deck-permalink'
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},
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hashPrefix: 'slide-',
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preventFragmentScroll: true
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});
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$d.bind('deck.init', function() {
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var opts = $[deck]('getOptions');
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$internals = $(),
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slides = $[deck]('getSlides');
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$.each(slides, function(i, $el) {
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var hash;
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/* Hand out ids to the unfortunate slides born without them */
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if (!$el.attr('id') || $el.data('deckAssignedId') === $el.attr('id')) {
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$el.attr('id', opts.hashPrefix + i);
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$el.data('deckAssignedId', opts.hashPrefix + i);
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}
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hash ='#' + $el.attr('id');
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/* Deep link to slides on init */
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if (hash === window.location.hash) {
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$[deck]('go', i);
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}
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/* Add internal links to this slide */
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$internals = $internals.add('a[href="' + hash + '"]');
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});
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if (!Modernizr.hashchange) {
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/* Set up internal links using click for the poor browsers
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without a hashchange event. */
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$internals.unbind('click.deckhash').bind('click.deckhash', function(e) {
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goByHash($(this).attr('href'));
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});
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}
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/* Set up first id container state class */
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if (slides.length) {
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$[deck]('getContainer').addClass(opts.classes.onPrefix + $[deck]('getSlide').attr('id'));
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};
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})
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/* Update permalink, address bar, and state class on a slide change */
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.bind('deck.change', function(e, from, to) {
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var hash = '#' + $[deck]('getSlide', to).attr('id'),
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opts = $[deck]('getOptions'),
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osp = opts.classes.onPrefix,
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$c = $[deck]('getContainer');
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$c.removeClass(osp + $[deck]('getSlide', from).attr('id'));
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$c.addClass(osp + $[deck]('getSlide', to).attr('id'));
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$(opts.selectors.hashLink).attr('href', hash);
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if (Modernizr.history) {
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window.history.replaceState({}, "", hash);
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}
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});
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/* Deals with internal links in modern browsers */
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$window.bind('hashchange.deckhash', function(e) {
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if (e.originalEvent && e.originalEvent.newURL) {
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goByHash(e.originalEvent.newURL);
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}
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else {
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goByHash(window.location.hash);
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}
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})
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/* Prevent scrolling on deep links */
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.bind('load', function() {
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if ($[deck]('getOptions').preventFragmentScroll) {
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$[deck]('getContainer').scrollLeft(0).scrollTop(0);
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}
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});
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})(jQuery, 'deck', this);
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