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/* ******************************
Module - Simple Tab Navigation
Author: Jack Lukic
Notes: First Commit Aug 15, 2012
History based tab navigation
****************************** */
;(function ($, window, document, undefined) {
$.fn.tabNavigation = function(parameters) {
var
settings = $.extend(true, {}, $.fn.tabNavigation.settings, parameters),
$tabNavigation = $(this),
$tabs = $(settings.context).find(settings.selector.tabs),
firstLoad = true,
cache = {},
recursionDepth = 0,
activeTabPath,
parameterArray,
historyEvent,
className = settings.className,
metadata = settings.metadata,
namespace = settings.namespace,
errors = settings.errors,
instance = $tabNavigation.data('module'),
query = arguments[0],
methodInvoked = (instance !== undefined && typeof query == 'string'),
passedArguments = [].slice.call(arguments, 1),
module,
invokedResponse
;
module = {
initialize: function() {
module.debug('Initializing Tabs', $tabNavigation);
// attach history events
if(settings.history) {
if( $.address === undefined ) {
module.error(errors.state);
return false;
}
else if(settings.path === false) {
module.error(errors.path);
return false;
}
else {
module.verbose('Address library found adding state change event');
$.address
.state(settings.path)
.change(module.event.history.change)
;
}
}
// attach events if navigation wasn't set to window
if( !$.isWindow( $tabNavigation.get(0) ) ) {
$tabNavigation
.on('click.' + namespace, module.event.click)
;
}
$tabNavigation
.data('module', module)
;
},
destroy: function() {
module.debug('Destroying tabs', $tabNavigation);
$tabNavigation
.off('.' + namespace)
;
},
event: {
click: function() {
module.debug('Navigation clicked');
var
tabPath = $(this).data(metadata.tab)
;
if(tabPath !== undefined) {
if(tabPath !== activeTabPath) {
if(settings.history) {
$.address.value(tabPath);
}
else {
module.change(tabPath);
}
}
}
else {
module.debug('No tab specified');
}
},
history: {
change: function(event) {
var
tabPath = event.pathNames.join('/') || module.get.initialPath(),
pageTitle = settings.templates.determineTitle(tabPath) || false
;
module.debug('History change event', tabPath, event);
historyEvent = event;
if(tabPath !== undefined) {
module.change(tabPath);
}
if(pageTitle) {
$.address.title(pageTitle);
}
}
}
},
refresh: function() {
if(activeTabPath) {
module.debug('Refreshing tab', activeTabPath);
module.change(activeTabPath);
}
},
cache: {
read: function(tabPath) {
return (tabPath !== undefined)
? cache[tabPath]
: cache
;
},
add: function(tabPath, content) {
tabPath = tabPath || activeTabPath;
module.debug('Adding cached content for', tabPath);
cache[tabPath] = content;
},
remove: function(tabPath) {
tabPath = tabPath || activeTabPath;
module.debug('Removing cached content for', tabPath);
delete cache[tabPath];
}
},
change: function(tabPath) {
var
pathArray = module.get.defaultPathArray(tabPath)
;
module.deactivate.all();
$.each(pathArray, function(index, tab) {
var
currentPathArray = pathArray.slice(0, index + 1),
currentPath = module.utils.arrayToPath(currentPathArray),
isLastTab = (module.utils.last(pathArray) == currentPath),
isTab = module.is.tab(currentPath),
isParam = !(isTab),
pushStateAvailable = (window.history && window.history.pushState),
shouldIgnoreLoad = (pushStateAvailable && settings.ignoreFirstLoad && firstLoad),
remoteContent = $.isPlainObject(settings.apiSettings),
$tab = module.get.tabElement(currentPath)
;
module.verbose('Looking for tab', tab);
if(isParam) {
module.verbose('Tab is not found, assuming it is a parameter', tab);
return true;
}
else if(isTab) {
// scope up
module.verbose('Tab was found', tab);
activeTabPath = currentPath;
parameterArray = module.utils.filterArray(pathArray, currentPathArray);
if(isLastTab && remoteContent) {
if(!shouldIgnoreLoad) {
module.activate.navigation(currentPath);
module.content.fetch(currentPath, settings.onTabLoad);
}
else {
module.debug('Ignoring remote content on first tab load', currentPath);
firstLoad = false;
cache[tabPath] = $tab.html();
module.activate.all(currentPath);
$.proxy(settings.onTabInit, $tab)(currentPath, parameterArray, historyEvent);
}
}
else {
module.debug('Opened tab', currentPath);
module.activate.all(currentPath);
$.proxy(settings.onTabLoad, $tab)(currentPath, parameterArray, historyEvent);
}
}
});
},
content: {
fetch: function(tabPath) {
var
$tab = module.get.tabElement(tabPath),
cachedContent = cache[tabPath] || false,
apiSettings = {
dataType : 'html',
stateContext : $tab,
success : function(response) {
cache[tabPath] = response;
module.content.update(tabPath, response);
if(tabPath == activeTabPath) {
module.debug('Content loaded', tabPath);
module.activate.tab(tabPath);
}
else {
module.debug('Content loaded in background', tabPath);
}
$.proxy(settings.onTabInit, $tab)(tabPath, parameterArray, historyEvent);
},
urlData: { tab: tabPath }
},
request = $tab.data(metadata.promise) || false,
existingRequest = ( request && request.state() === 'pending' )
;
if(settings.cache && cachedContent) {
module.debug('Showing existing content', tabPath);
// module.content.update(tabPath, cachedContent);
module.activate.tab(tabPath);
$.proxy(settings.onTabLoad, $tab)(tabPath, parameterArray, historyEvent);
}
else if(existingRequest) {
module.debug('Content is already loading', tabPath);
$tab
.addClass(className.loading)
;
}
else if($.api !== undefined) {
module.debug('Retrieving content', tabPath);
$.api( $.extend(true, {}, settings.apiSettings, apiSettings) );
}
else {
module.error(errors.api);
}
},
update: function(tabPath, html) {
module.debug('Updating html for', tabPath);
var
$tab = module.get.tabElement(tabPath)
;
$tab
.html(html)
;
}
},
activate: {
all: function(tabPath) {
module.activate.tab(tabPath);
module.activate.navigation(tabPath);
},
tab: function(tabPath) {
var
$tab = module.get.tabElement(tabPath)
;
module.verbose('Showing tab content for', $tab);
$tab.addClass(className.active);
},
navigation: function(tabPath) {
var
$nav = module.get.navElement(tabPath)
;
module.verbose('Activating tab navigation for', $nav);
$nav.addClass(className.active);
}
},
deactivate: {
all: function() {
module.deactivate.navigation();
module.deactivate.tabs();
},
navigation: function() {
$tabNavigation
.removeClass(className.active)
;
},
tabs: function() {
$tabs
.removeClass(className.active + ' ' + className.loading)
;
}
},
is: {
tab: function(tabName) {
return ( module.get.tabElement(tabName).size() > 0 );
}
},
get: {
initialPath: function() {
return $tabNavigation.eq(0).data(metadata.tab) || $tabs.eq(0).data(metadata.tab);
},
// adds default tabs to tab path
defaultPathArray: function(tabPath) {
return module.utils.pathToArray( module.get.defaultPath(tabPath) );
},
defaultPath: function(tabPath) {
var
$defaultNav = $tabNavigation.filter('[data-' + metadata.tab + '^="' + tabPath + '/"]').eq(0),
defaultTab = $defaultNav.data(metadata.tab) || false
;
if( defaultTab ) {
module.debug('Found default tab', defaultTab);
if(recursionDepth < settings.maxDepth) {
recursionDepth++;
return module.get.defaultPath(defaultTab);
}
module.error(errors.recursion);
}
recursionDepth = 0;
return tabPath;
},
navElement: function(tabPath) {
tabPath = tabPath || activeTabPath;
return $tabNavigation.filter('[data-' + metadata.tab + '="' + tabPath + '"]');
},
tabElement: function(tabPath) {
var
$fullPathTab,
$simplePathTab,
tabPathArray,
lastTab
;
tabPath = tabPath || activeTabPath;
tabPathArray = module.utils.pathToArray(tabPath);
lastTab = module.utils.last(tabPathArray);
$fullPathTab = $tabs.filter('[data-' + metadata.tab + '="' + lastTab + '"]');
$simplePathTab = $tabs.filter('[data-' + metadata.tab + '="' + tabPath + '"]');
return ($fullPathTab.size() > 0)
? $fullPathTab
: $simplePathTab
;
},
tab: function() {
return activeTabPath;
}
},
utils: {
filterArray: function(keepArray, removeArray) {
return $.grep(keepArray, function(keepValue) {
return ( $.inArray(keepValue, removeArray) == -1);
});
},
last: function(array) {
return $.isArray(array)
? array[ array.length - 1]
: false
;
},
pathToArray: function(pathName) {
if(pathName === undefined) {
pathName = activeTabPath;
}
return typeof pathName == 'string'
? pathName.split('/')
: [pathName]
;
},
arrayToPath: function(pathArray) {
return $.isArray(pathArray)
? pathArray.join('/')
: false
;
}
},
/* standard module */
setting: function(name, value) {
if(value === undefined) {
return settings[name];
}
settings[name] = value;
},
verbose: function() {
if(settings.verbose) {
module.debug.apply(this, arguments);
}
},
debug: function() {
var
output = [],
message = settings.moduleName + ': ' + arguments[0],
variables = [].slice.call( arguments, 1 ),
log = console.info || console.log || function(){}
;
log = Function.prototype.bind.call(log, console);
if(settings.debug) {
output.push(message);
log.apply(console, output.concat(variables) );
}
},
error: function() {
var
output = [],
errorMessage = settings.moduleName + ': ' + arguments[0],
variables = [].slice.call( arguments, 1 ),
log = console.warn || console.log || function(){}
;
log = Function.prototype.bind.call(log, console);
if(settings.debug) {
output.push(errorMessage);
output.concat(variables);
log.apply(console, output.concat(variables));
}
},
invoke: function(query, context, passedArguments) {
var
maxDepth,
found
;
passedArguments = passedArguments || [].slice.call( arguments, 2 );
if(typeof query == 'string' && instance !== undefined) {
query = query.split('.');
maxDepth = query.length - 1;
$.each(query, function(depth, value) {
if( $.isPlainObject( instance[value] ) && (depth != maxDepth) ) {
instance = instance[value];
return true;
}
else if( instance[value] !== undefined ) {
found = instance[value];
return true;
}
module.error(settings.errors.method);
return false;
});
}
if ( $.isFunction( found ) ) {
return found.apply(context, passedArguments);
}
// return retrieved variable or chain
return found;
}
};
// check for invoking internal method
if(methodInvoked) {
invokedResponse = module.invoke(query, this, passedArguments);
}
// otherwise initialize
else {
module.initialize();
}
return (invokedResponse !== undefined)
? invokedResponse
: this
;
};
// shortcut for tabbed content with no defined navigation
$.tabNavigation = function(settings) {
$(window).tabNavigation(settings);
};
$.fn.tabNavigation.settings = {
moduleName : 'Tab Module',
verbose : false,
debug : true,
namespace : 'tab',
// only called first time a tab's content is loaded (when remote source)
onTabInit : function(tabPath, parameterArray, historyEvent) {},
// called on every load
onTabLoad : function(tabPath, parameterArray, historyEvent) {},
templates: {
determineTitle: function(tabArray) {}
},
history : false,
path : false,
context : 'body',
// max depth a tab can be nested
maxDepth : 25,
// dont load content on first load
ignoreFirstLoad : true,
// load tab content new every tab click
alwaysRefresh : false,
// cache the content requests to pull locally
cache : true,
// settings for api call
apiSettings : false,
errors: {
api : 'You attempted to load content without API module',
noContent : 'The tab you specified is missing a content url.',
method : 'The method you called is not defined',
state : 'The state library has not been initialized',
missingTab : 'Missing tab: ',
path : 'History enabled, but no path was specified',
recursion : 'Max recursive depth reached'
},
metadata : {
tab : 'tab',
loaded : 'loaded',
promise: 'promise'
},
className : {
loading : 'loading',
active : 'active'
},
selector : {
tabs : '.tab'
}
};
})( jQuery, window , document );