Adding presentation of Parallelization in EO, dated from July, 18th to tutorial section.

eo/tutorial/Parallelization/js/deck.navigation.js

@@ -0,0 +1,91 @@
+/*!
+Deck JS - deck.navigation
+Copyright (c) 2011 Caleb Troughton
+Dual licensed under the MIT license and GPL license.
+https://github.com/imakewebthings/deck.js/blob/master/MIT-license.txt
+https://github.com/imakewebthings/deck.js/blob/master/GPL-license.txt
+*/
+
+/*
+This module adds clickable previous and next links to the deck.
+*/
+(function($, deck, undefined) {
+	var $d = $(document),
+	
+	/* Updates link hrefs, and disabled states if last/first slide */
+	updateButtons = function(e, from, to) {
+		var opts = $[deck]('getOptions'),
+		last = $[deck]('getSlides').length - 1,
+		prevSlide = $[deck]('getSlide', to - 1),
+		nextSlide = $[deck]('getSlide', to + 1),
+		prevId = prevSlide ? prevSlide.attr('id') : undefined;
+		nextId = nextSlide ? nextSlide.attr('id') : undefined;
+		
+		$(opts.selectors.previousLink)
+			.toggleClass(opts.classes.navDisabled, !to)
+			.attr('href', '#' + (prevId ? prevId : ''));
+		$(opts.selectors.nextLink)
+			.toggleClass(opts.classes.navDisabled, to === last)
+			.attr('href', '#' + (nextId ? nextId : ''));
+	};
+	
+	/*
+	Extends defaults/options.
+	
+	options.classes.navDisabled
+		This class is added to a navigation link when that action is disabled.
+		It is added to the previous link when on the first slide, and to the
+		next link when on the last slide.
+		
+	options.selectors.nextLink
+		The elements that match this selector will move the deck to the next
+		slide when clicked.
+		
+	options.selectors.previousLink
+		The elements that match this selector will move to deck to the previous
+		slide when clicked.
+	*/
+	$.extend(true, $[deck].defaults, {
+		classes: {
+			navDisabled: 'deck-nav-disabled'
+		},
+		
+		selectors: {
+			nextLink: '.deck-next-link',
+			previousLink: '.deck-prev-link'
+		}
+	});
+
+	$d.bind('deck.init', function() {
+		var opts = $[deck]('getOptions'),
+		slides = $[deck]('getSlides'),
+		$current = $[deck]('getSlide'),
+		ndx;
+		
+		// Setup prev/next link events
+		$(opts.selectors.previousLink)
+		.unbind('click.decknavigation')
+		.bind('click.decknavigation', function(e) {
+			$[deck]('prev');
+			e.preventDefault();
+		});
+		
+		$(opts.selectors.nextLink)
+		.unbind('click.decknavigation')
+		.bind('click.decknavigation', function(e) {
+			$[deck]('next');
+			e.preventDefault();
+		});
+		
+		// Find where we started in the deck and set initial states
+		$.each(slides, function(i, $slide) {
+			if ($slide === $current) {
+				ndx = i;
+				return false;
+			}
+		});
+		updateButtons(null, ndx, ndx);
+	})
+	.bind('deck.change', updateButtons);
+})(jQuery, 'deck');
+