4 files changed, 172 insertions, 0 deletions
diff --git a/deck.js/extensions/hash/deck.hash.css b/deck.js/extensions/hash/deck.hash.css
new file mode 100644
index 0000000..28f0732
--- /dev/null
+++ b/deck.js/extensions/hash/deck.hash.css
@@ -0,0 +1,13 @@
+.deck-container .deck-permalink {
+  display: none;
+  position: absolute;
+  z-index: 4;
+  bottom: 30px;
+  right: 0;
+  width: 48px;
+  text-align: center;
+}
+
+.no-history .deck-container:hover .deck-permalink {
+  display: block;
+}
diff --git a/deck.js/extensions/hash/deck.hash.html b/deck.js/extensions/hash/deck.hash.html
new file mode 100644
index 0000000..102579c
--- /dev/null
+++ b/deck.js/extensions/hash/deck.hash.html
@@ -0,0 +1,2 @@
+<!-- Place the following snippet at the bottom of the deck container. -->
+<a href="." title="Permalink to this slide" class="deck-permalink">#</a>
+\ No newline at end of file
diff --git a/deck.js/extensions/hash/deck.hash.js b/deck.js/extensions/hash/deck.hash.js
new file mode 100644
index 0000000..879bc62
--- /dev/null
+++ b/deck.js/extensions/hash/deck.hash.js
@@ -0,0 +1,142 @@
+/*!
+Deck JS - deck.hash
+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 deep linking to individual slides, enables internal links
+to slides within decks, and updates the address bar with the hash as the user
+moves through the deck. A permalink anchor is also updated. Standard themes
+hide this link in browsers that support the History API, and show it for
+those that do not. Slides that do not have an id are assigned one according to
+the hashPrefix option. In addition to the on-slide container state class
+kept by core, this module adds an on-slide state class that uses the id of each
+slide.
+*/
+(function ($, deck, window, undefined) {
+	var $d = $(document),
+	$window = $(window),
+	
+	/* Collection of internal fragment links in the deck */
+	$internals,
+	
+	/*
+	Internal only function.  Given a string, extracts the id from the hash,
+	matches it to the appropriate slide, and navigates there.
+	*/
+	goByHash = function(str) {
+		var id = str.substr(str.indexOf("#") + 1),
+		slides = $[deck]('getSlides');
+		
+		$.each(slides, function(i, $el) {
+			if ($el.attr('id') === id) {
+				$[deck]('go', i);
+				return false;
+			}
+		});
+		
+		// If we don't set these to 0 the container scrolls due to hashchange
+		$[deck]('getContainer').scrollLeft(0).scrollTop(0);
+	};
+	
+	/*
+	Extends defaults/options.
+	
+	options.selectors.hashLink
+		The element matching this selector has its href attribute updated to
+		the hash of the current slide as the user navigates through the deck.
+		
+	options.hashPrefix
+		Every slide that does not have an id is assigned one at initialization.
+		Assigned ids take the form of hashPrefix + slideIndex, e.g., slide-0,
+		slide-12, etc.
+
+	options.preventFragmentScroll
+		When deep linking to a hash of a nested slide, this scrolls the deck
+		container to the top, undoing the natural browser behavior of scrolling
+		to the document fragment on load.
+	*/
+	$.extend(true, $[deck].defaults, {
+		selectors: {
+			hashLink: '.deck-permalink'
+		},
+		
+		hashPrefix: 'slide-',
+		preventFragmentScroll: true
+	});
+	
+	
+	$d.bind('deck.init', function() {
+	   var opts = $[deck]('getOptions');
+		$internals = $(),
+		slides = $[deck]('getSlides');
+		
+		$.each(slides, function(i, $el) {
+			var hash;
+			
+			/* Hand out ids to the unfortunate slides born without them */
+			if (!$el.attr('id') || $el.data('deckAssignedId') === $el.attr('id')) {
+				$el.attr('id', opts.hashPrefix + i);
+				$el.data('deckAssignedId', opts.hashPrefix + i);
+			}
+			
+			hash ='#' + $el.attr('id');
+			
+			/* Deep link to slides on init */
+			if (hash === window.location.hash) {
+				setTimeout(function() {$[deck]('go', i)}, 1);
+			}
+			
+			/* Add internal links to this slide */
+			$internals = $internals.add('a[href="' + hash + '"]');
+		});
+		
+		if (!Modernizr.hashchange) {
+			/* Set up internal links using click for the poor browsers
+			without a hashchange event. */
+			$internals.unbind('click.deckhash').bind('click.deckhash', function(e) {
+				goByHash($(this).attr('href'));
+			});
+		}
+		
+		/* Set up first id container state class */
+		if (slides.length) {
+			$[deck]('getContainer').addClass(opts.classes.onPrefix + $[deck]('getSlide').attr('id'));
+		};
+	})
+	/* Update permalink, address bar, and state class on a slide change */
+	.bind('deck.change', function(e, from, to) {
+		var hash = '#' + $[deck]('getSlide', to).attr('id'),
+		hashPath = window.location.href.replace(/#.*/, '') + hash,
+		opts = $[deck]('getOptions'),
+		osp = opts.classes.onPrefix,
+		$c = $[deck]('getContainer');
+		
+		$c.removeClass(osp + $[deck]('getSlide', from).attr('id'));
+		$c.addClass(osp + $[deck]('getSlide', to).attr('id'));
+		
+		$(opts.selectors.hashLink).attr('href', hashPath);
+		if (Modernizr.history) {
+			window.history.replaceState({}, "", hashPath);
+		}
+	});
+	
+	/* Deals with internal links in modern browsers */
+	$window.bind('hashchange.deckhash', function(e) {
+		if (e.originalEvent && e.originalEvent.newURL) {
+			goByHash(e.originalEvent.newURL);
+		}
+		else {
+			goByHash(window.location.hash);
+		}
+	})
+	/* Prevent scrolling on deep links */
+	.bind('load', function() {
+		if ($[deck]('getOptions').preventFragmentScroll) {
+			$[deck]('getContainer').scrollLeft(0).scrollTop(0);
+		}
+	});
+})(jQuery, 'deck', this);
+\ No newline at end of file
diff --git a/deck.js/extensions/hash/deck.hash.scss b/deck.js/extensions/hash/deck.hash.scss
new file mode 100644
index 0000000..03b412d
--- /dev/null
+++ b/deck.js/extensions/hash/deck.hash.scss
@@ -0,0 +1,15 @@
+.deck-container {
+	.deck-permalink {
+		display:none;
+		position:absolute;
+		z-index:4;
+		bottom:30px;
+		right:0;
+		width:48px;
+		text-align:center;
+	}
+}
+
+.no-history .deck-container:hover .deck-permalink {
+	display:block;
+}
+\ No newline at end of file