Created
March 18, 2011 17:50
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/** | |
* The history class is in charge of the browser | |
* history and URL's. | |
*/ | |
TT.history = {}; | |
/** */ | |
TT.history.TABLE_OF_CONTENTS = 'table-of-things'; | |
TT.history.HOME = 'home'; | |
TT.history.FOREWORD = 'foreword'; | |
TT.history.THEEND = 'theend'; | |
TT.history.CREDITS = 'credits'; | |
TT.history.previousHash = ''; | |
TT.history.hashCheckInterval = -1; | |
TT.history.stack = []; | |
/** | |
* | |
*/ | |
TT.history.initialize = function() { | |
if( TT.history.supportsHistoryPushState() ) { | |
$( window ).bind( "popstate", TT.history.onHistoryChanged ); | |
} | |
else { | |
TT.history.hashCheckInterval = setInterval( TT.history.onCheckHash, 200 ); | |
} | |
} | |
/** | |
* Check for history.pushState support. | |
*/ | |
TT.history.supportsHistoryPushState = function() { | |
return ('pushState' in window.history) && window.history['pushState'] !== null; | |
} | |
/** | |
* Called at an interval for browsers that do not support | |
* the history API. Checks if the hash has changed and issues | |
* a navigation if so. | |
*/ | |
TT.history.onCheckHash = function() { | |
if( document.location.hash !== TT.history.previousHash ) { | |
TT.history.navigateToPath( document.location.hash.slice( 1 ) ); | |
TT.history.previousHash = document.location.hash; | |
} | |
} | |
/** | |
* | |
*/ | |
TT.history.pushState = function( url ) { | |
if ( TT.history.supportsHistoryPushState() ) { | |
window.history.pushState('', '', url); | |
} | |
else { | |
TT.history.previousHash = '#' + url; | |
document.location.hash = url; | |
} | |
// Google Analytics tracking | |
TT.track( url ); | |
TT.history.stack.push( url ); | |
} | |
/** | |
* | |
*/ | |
TT.history.onHistoryChanged = function( event ) { | |
if ( TT.history.supportsHistoryPushState() ) { | |
TT.history.navigateToPath( document.location.pathname ); | |
} | |
} | |
/** | |
* | |
*/ | |
TT.history.navigateToPath = function( pathname ) { | |
TT.navigation.hideTableOfContents(); | |
// Extract the path name parts | |
var part1 = pathname.split("/")[1]; // The article ID or home/credits | |
var part2 = pathname.split("/")[2]; // The page number | |
if( !part1 || part1 == TT.history.HOME ) { | |
TT.navigation.goToHome( true ); | |
} | |
else if( part1 == TT.history.CREDITS ) { | |
TT.navigation.goToCredits( true ); | |
} | |
else if( part1 == TT.history.TABLE_OF_CONTENTS ) { | |
TT.navigation.showTableOfContents( true ); | |
} | |
else { | |
if( part1 ) { | |
if( part2 ) { | |
TT.navigation.goToPage( part1, part2, true ); | |
} | |
else { | |
TT.navigation.goToPage( part1, "1", true ); | |
} | |
} | |
} | |
} |
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