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steal('jquery/class', 'jquery/lang/string', 'jquery/event/destroyed', function( $ ) {
// ------- HELPER FUNCTIONS ------
// Binds an element, returns a function that unbinds
var bind = function( el, ev, callback ) {
var wrappedCallback,
binder = el.bind && el.unbind ? el : $(isFunction(el) ? [el] : el);
//this is for events like >click.
if ( ev.indexOf(">") === 0 ) {
ev = ev.substr(1);
wrappedCallback = function( event ) {
if ( event.target === el ) {
callback.apply(this, arguments);
}
};
}
binder.bind(ev, wrappedCallback || callback);
// if ev name has >, change the name and bind
// in the wrapped callback, check that the element matches the actual element
return function() {
binder.unbind(ev, wrappedCallback || callback);
el = ev = callback = wrappedCallback = null;
};
},
makeArray = $.makeArray,
isArray = $.isArray,
isFunction = $.isFunction,
extend = $.extend,
Str = $.String,
each = $.each,
STR_PROTOTYPE = 'prototype',
STR_CONSTRUCTOR = 'constructor',
slice = Array[STR_PROTOTYPE].slice,
// Binds an element, returns a function that unbinds
delegate = function( el, selector, ev, callback ) {
var binder = el.delegate && el.undelegate ? el : $(isFunction(el) ? [el] : el)
binder.delegate(selector, ev, callback);
return function() {
binder.undelegate(selector, ev, callback);
binder = el = ev = callback = selector = null;
};
},
// calls bind or unbind depending if there is a selector
binder = function( el, ev, callback, selector ) {
return selector ? delegate(el, selector, ev, callback) : bind(el, ev, callback);
},
// moves 'this' to the first argument, wraps it with jQuery if it's an element
shifter = function shifter(context, name) {
var method = typeof name == "string" ? context[name] : name;
return function() {
context.called = name;
return method.apply(context, [this.nodeName ? $(this) : this].concat( slice.call(arguments, 0) ) );
};
},
// matches dots
dotsReg = /\./g,
// matches controller
controllersReg = /_?controllers?/ig,
//used to remove the controller from the name
underscoreAndRemoveController = function( className ) {
return Str.underscore(className.replace("jQuery.", "").replace(dotsReg, '_').replace(controllersReg, ""));
},
// checks if it looks like an action
actionMatcher = /[^\w]/,
// handles parameterized action names
parameterReplacer = /\{([^\}]+)\}/g,
breaker = /^(?:(.*?)\s)?([\w\.\:>]+)$/,
basicProcessor,
data = function(el, data){
return $.data(el, "controllers", data)
};
/**
* @class jQuery.Controller
* @parent jquerymx
* @plugin jquery/controller
* @download http://jmvcsite.heroku.com/pluginify?plugins[]=jquery/controller/controller.js
* @test jquery/controller/qunit.html
* @inherits jQuery.Class
* @description jQuery widget factory.
*
* jQuery.Controller helps create organized, memory-leak free, rapidly performing
* jQuery widgets. Its extreme flexibility allows it to serve as both
* a traditional View and a traditional Controller.
*
* This means it is used to
* create things like tabs, grids, and contextmenus as well as
* organizing them into higher-order business rules.
*
* Controllers make your code deterministic, reusable, organized and can tear themselves
* down auto-magically. Read about [http://jupiterjs.com/news/writing-the-perfect-jquery-plugin
* the theory behind controller] and
* a [http://jupiterjs.com/news/organize-jquery-widgets-with-jquery-controller walkthrough of its features]
* on Jupiter's blog. [mvc.controller Get Started with jQueryMX] also has a great walkthrough.
*
* Controller inherits from [jQuery.Class $.Class] and makes heavy use of
* [http://api.jquery.com/delegate/ event delegation]. Make sure
* you understand these concepts before using it.
*
* ## Basic Example
*
* Instead of
*
*
* $(function(){
* $('#tabs').click(someCallbackFunction1)
* $('#tabs .tab').click(someCallbackFunction2)
* $('#tabs .delete click').click(someCallbackFunction3)
* });
*
* do this
*
* $.Controller('Tabs',{
* click: function() {...},
* '.tab click' : function() {...},
* '.delete click' : function() {...}
* })
* $('#tabs').tabs();
*
*
* ## Tabs Example
*
* @demo jquery/controller/controller.html
*
* ## Using Controller
*
* Controller helps you build and organize jQuery plugins. It can be used
* to build simple widgets, like a slider, or organize multiple
* widgets into something greater.
*
* To understand how to use Controller, you need to understand
* the typical lifecycle of a jQuery widget and how that maps to
* controller's functionality:
*
* ### A controller class is created.
*
* $.Controller("MyWidget",
* {
* defaults : {
* message : "Remove Me"
* }
* },
* {
* init : function(rawEl, rawOptions){
* this.element.append(
* "<div>"+this.options.message+"</div>"
* );
* },
* "div click" : function(div, ev){
* div.remove();
* }
* })
*
* This creates a <code>$.fn.my_widget</code> jQuery helper function
* that can be used to create a new controller instance on an element. Find
* more information [jquery.controller.plugin here] about the plugin gets created
* and the rules around its name.
*
* ### An instance of controller is created on an element
*
* $('.thing').my_widget(options) // calls new MyWidget(el, options)
*
* This calls <code>new MyWidget(el, options)</code> on
* each <code>'.thing'</code> element.
*
* When a new [jQuery.Class Class] instance is created, it calls the class's
* prototype setup and init methods. Controller's [jQuery.Controller.prototype.setup setup]
* method:
*
* - Sets [jQuery.Controller.prototype.element this.element] and adds the controller's name to element's className.
* - Merges passed in options with defaults object and sets it as [jQuery.Controller.prototype.options this.options]
* - Saves a reference to the controller in <code>$.data</code>.
* - [jquery.controller.listening Binds all event handler methods].
*
*
* ### The controller responds to events
*
* Typically, Controller event handlers are automatically bound. However, there are
* multiple ways to [jquery.controller.listening listen to events] with a controller.
*
* Once an event does happen, the callback function is always called with 'this'
* referencing the controller instance. This makes it easy to use helper functions and
* save state on the controller.
*
*
* ### The widget is destroyed
*
* If the element is removed from the page, the
* controller's [jQuery.Controller.prototype.destroy] method is called.
* This is a great place to put any additional teardown functionality.
*
* You can also teardown a controller programatically like:
*
* $('.thing').my_widget('destroy');
*
* ## Todos Example
*
* Lets look at a very basic example -
* a list of todos and a button you want to click to create a new todo.
* Your HTML might look like:
*
* @codestart html
* <div id='todos'>
* <ol>
* <li class="todo">Laundry</li>
* <li class="todo">Dishes</li>
* <li class="todo">Walk Dog</li>
* </ol>
* <a class="create">Create</a>
* </div>
* @codeend
*
* To add a mousover effect and create todos, your controller might look like:
*
* $.Controller('Todos',{
* ".todo mouseover" : function( el, ev ) {
* el.css("backgroundColor","red")
* },
* ".todo mouseout" : function( el, ev ) {
* el.css("backgroundColor","")
* },
* ".create click" : function() {
* this.find("ol").append("<li class='todo'>New Todo</li>");
* }
* })
*
* Now that you've created the controller class, you've must attach the event handlers on the '#todos' div by
* creating [jQuery.Controller.prototype.setup|a new controller instance]. There are 2 ways of doing this.
*
* @codestart
* //1. Create a new controller directly:
* new Todos($('#todos'));
* //2. Use jQuery function
* $('#todos').todos();
* @codeend
*
* ## Controller Initialization
*
* It can be extremely useful to add an init method with
* setup functionality for your widget.
*
* In the following example, I create a controller that when created, will put a message as the content of the element:
*
* $.Controller("SpecialController",
* {
* init: function( el, message ) {
* this.element.html(message)
* }
* })
* $(".special").special("Hello World")
*
* ## Removing Controllers
*
* Controller removal is built into jQuery. So to remove a controller, you just have to remove its element:
*
* @codestart
* $(".special_controller").remove()
* $("#containsControllers").html("")
* @codeend
*
* It's important to note that if you use raw DOM methods (<code>innerHTML, removeChild</code>), the controllers won't be destroyed.
*
* If you just want to remove controller functionality, call destroy on the controller instance:
*
* @codestart
* $(".special_controller").controller().destroy()
* @codeend
*
* ## Accessing Controllers
*
* Often you need to get a reference to a controller, there are a few ways of doing that. For the
* following example, we assume there are 2 elements with <code>className="special"</code>.
*
* @codestart
* //creates 2 foo controllers
* $(".special").foo()
*
* //creates 2 bar controllers
* $(".special").bar()
*
* //gets all controllers on all elements:
* $(".special").controllers() //-> [foo, bar, foo, bar]
*
* //gets only foo controllers
* $(".special").controllers(FooController) //-> [foo, foo]
*
* //gets all bar controllers
* $(".special").controllers(BarController) //-> [bar, bar]
*
* //gets first controller
* $(".special").controller() //-> foo
*
* //gets foo controller via data
* $(".special").data("controllers")["FooController"] //-> foo
* @codeend
*
* ## Calling methods on Controllers
*
* Once you have a reference to an element, you can call methods on it. However, Controller has
* a few shortcuts:
*
* @codestart
* //creates foo controller
* $(".special").foo({name: "value"})
*
* //calls FooController.prototype.update
* $(".special").foo({name: "value2"})
*
* //calls FooController.prototype.bar
* $(".special").foo("bar","something I want to pass")
* @codeend
*
* These methods let you call one controller from another controller.
*
*/
$.Class("jQuery.Controller",
/**
* @Static
*/
{
/**
* Does 2 things:
*
* - Creates a jQuery helper for this controller.</li>
* - Calculates and caches which functions listen for events.</li>
*
* ### jQuery Helper Naming Examples
*
*
* "TaskController" -> $().task_controller()
* "Controllers.Task" -> $().controllers_task()
*
*/
setup: function() {
// Allow contollers to inherit "defaults" from superclasses as it done in $.Class
this._super.apply(this, arguments);
// if you didn't provide a name, or are controller, don't do anything
if (!this.shortName || this.fullName == "jQuery.Controller" ) {
return;
}
// cache the underscored names
this._fullName = underscoreAndRemoveController(this.fullName);
this._shortName = underscoreAndRemoveController(this.shortName);
var controller = this,
/**
* @attribute pluginName
* Setting the <code>pluginName</code> property allows you
* to change the jQuery plugin helper name from its
* default value.
*
* $.Controller("Mxui.Layout.Fill",{
* pluginName: "fillWith"
* },{});
*
* $("#foo").fillWith();
*/
pluginname = this.pluginName || this._fullName,
funcName, forLint;
// create jQuery plugin
if (!$.fn[pluginname] ) {
$.fn[pluginname] = function( options ) {
var args = makeArray(arguments),
//if the arg is a method on this controller
isMethod = typeof options == "string" && isFunction(controller[STR_PROTOTYPE][options]),
meth = args[0];
return this.each(function() {
//check if created
var controllers = data(this),
//plugin is actually the controller instance
plugin = controllers && controllers[pluginname];
if ( plugin ) {
if ( isMethod ) {
// call a method on the controller with the remaining args
plugin[meth].apply(plugin, args.slice(1));
} else {
// call the plugin's update method
plugin.update.apply(plugin, args);
}
} else {
//create a new controller instance
controller.newInstance.apply(controller, [this].concat(args));
}
});
};
}
// make sure listensTo is an array
//!steal-remove-start
if (!isArray(this.listensTo) ) {
throw "listensTo is not an array in " + this.fullName;
}
//!steal-remove-end
// calculate and cache actions
this.actions = {};
for ( funcName in this[STR_PROTOTYPE] ) {
if (funcName == 'constructor' || !isFunction(this[STR_PROTOTYPE][funcName]) ) {
continue;
}
if ( this._isAction(funcName) ) {
this.actions[funcName] = this._action(funcName);
}
}
},
hookup: function( el ) {
return new this(el);
},
/**
* @hide
* @param {String} methodName a prototype function
* @return {Boolean} truthy if an action or not
*/
_isAction: function( methodName ) {
if ( actionMatcher.test(methodName) ) {
return true;
} else {
return $.inArray(methodName, this.listensTo) > -1 || $.event.special[methodName] || processors[methodName];
}
},
/**
* @hide
* This takes a method name and the options passed to a controller
* and tries to return the data necessary to pass to a processor
* (something that binds things).
*
* For performance reasons, this called twice. First, it is called when
* the Controller class is created. If the methodName is templated
* like : "{window} foo", it returns null. If it is not templated
* it returns event binding data.
*
* The resulting data is added to this.actions.
*
* When a controller instance is created, _action is called again, but only
* on templated actions.
*
* @param {Object} methodName the method that will be bound
* @param {Object} [options] first param merged with class default options
* @return {Object} null or the processor and pre-split parts.
* The processor is what does the binding/subscribing.
*/
_action: function( methodName, options ) {
// reset the test index
parameterReplacer.lastIndex = 0;
//if we don't have options (a controller instance), we'll run this later
if (!options && parameterReplacer.test(methodName) ) {
return null;
}
// If we have options, run sub to replace templates "{}" with a value from the options
// or the window
var convertedName = options ? Str.sub(methodName, [options, window]) : methodName,
// If a "{}" resolves to an object, convertedName will be an array
arr = isArray(convertedName),
// get the parts of the function = [convertedName, delegatePart, eventPart]
parts = (arr ? convertedName[1] : convertedName).match(breaker),
event = parts[2],
processor = processors[event] || basicProcessor;
return {
processor: processor,
parts: parts,
delegate : arr ? convertedName[0] : undefined
};
},
/**
* @attribute processors
* An object of {eventName : function} pairs that Controller uses to hook up events
* auto-magically. A processor function looks like:
*
* jQuery.Controller.processors.
* myprocessor = function( el, event, selector, cb, controller ) {
* //el - the controller's element
* //event - the event (myprocessor)
* //selector - the left of the selector
* //cb - the function to call
* //controller - the binding controller
* };
*
* This would bind anything like: "foo~3242 myprocessor".
*
* The processor must return a function that when called,
* unbinds the event handler.
*
* Controller already has processors for the following events:
*
* - change
* - click
* - contextmenu
* - dblclick
* - focusin
* - focusout
* - keydown
* - keyup
* - keypress
* - mousedown
* - mouseenter
* - mouseleave
* - mousemove
* - mouseout
* - mouseover
* - mouseup
* - reset
* - resize
* - scroll
* - select
* - submit
*
* Listen to events on the document or window
* with templated event handlers:
*
*
* $.Controller('Sized',{
* "{window} resize" : function(){
* this.element.width(this.element.parent().width() / 2);
* }
* });
*
* $('.foo').sized();
*/
processors: {},
/**
* @attribute listensTo
* An array of special events this controller
* listens too. You only need to add event names that
* are whole words (ie have no special characters).
*
* $.Controller('TabPanel',{
* listensTo : ['show']
* },{
* 'show' : function(){
* this.element.show();
* }
* })
*
* $('.foo').tab_panel().trigger("show");
*
*/
listensTo: [],
/**
* @attribute defaults
* A object of name-value pairs that act as default values for a controller's
* [jQuery.Controller.prototype.options options].
*
* $.Controller("Message",
* {
* defaults : {
* message : "Hello World"
* }
* },{
* init : function(){
* this.element.text(this.options.message);
* }
* })
*
* $("#el1").message(); //writes "Hello World"
* $("#el12").message({message: "hi"}); //writes hi
*
* In [jQuery.Controller.prototype.setup setup] the options passed to the controller
* are merged with defaults. This is not a deep merge.
*/
defaults: {}
},
/**
* @Prototype
*/
{
/**
* Setup is where most of controller's magic happens. It does the following:
*
* ### 1. Sets this.element
*
* The first parameter passed to new Controller(el, options) is expected to be
* an element. This gets converted to a jQuery wrapped element and set as
* [jQuery.Controller.prototype.element this.element].
*
* ### 2. Adds the controller's name to the element's className.
*
* Controller adds it's plugin name to the element's className for easier
* debugging. For example, if your Controller is named "Foo.Bar", it adds
* "foo_bar" to the className.
*
* ### 3. Saves the controller in $.data
*
* A reference to the controller instance is saved in $.data. You can find
* instances of "Foo.Bar" like:
*
* $("#el").data("controllers")['foo_bar'].
*
* ### Binds event handlers
*
* Setup does the event binding described in [jquery.controller.listening Listening To Events].
*
* @param {HTMLElement} element the element this instance operates on.
* @param {Object} [options] option values for the controller. These get added to
* this.options and merged with [jQuery.Controller.static.defaults defaults].
* @return {Array} return an array if you wan to change what init is called with. By
* default it is called with the element and options passed to the controller.
*/
setup: function( element, options ) {
var funcName, ready, cls = this[STR_CONSTRUCTOR];
//want the raw element here
element = (typeof element == 'string' ? $(element) :
(element.jquery ? element : [element]) )[0];
//set element and className on element
var pluginname = cls.pluginName || cls._fullName;
//set element and className on element
this.element = $(element).addClass(pluginname);
//set in data
(data(element) || data(element, {}))[pluginname] = this;
/**
* @attribute options
*
* Options are used to configure an controller. They are
* the 2nd argument
* passed to a controller (or the first argument passed to the
* [jquery.controller.plugin controller's jQuery plugin]).
*
* For example:
*
* $.Controller('Hello')
*
* var h1 = new Hello($('#content1'), {message: 'World'} );
* equal( h1.options.message , "World" )
*
* var h2 = $('#content2').hello({message: 'There'})
* .controller();
* equal( h2.options.message , "There" )
*
* Options are merged with [jQuery.Controller.static.defaults defaults] in
* [jQuery.Controller.prototype.setup setup].
*
* For example:
*
* $.Controller("Tabs",
* {
* defaults : {
* activeClass: "ui-active-state"
* }
* },
* {
* init : function(){
* this.element.addClass(this.options.activeClass);
* }
* })
*
* $("#tabs1").tabs() // adds 'ui-active-state'
* $("#tabs2").tabs({activeClass : 'active'}) // adds 'active'
*
* Options are typically updated by calling
* [jQuery.Controller.prototype.update update];
*
*/
this.options = extend( extend(true, {}, cls.defaults), options);
/**
* @attribute called
* String name of current function being called on controller instance. This is
* used for picking the right view in render.
* @hide
*/
this.called = "init";
// bind all event handlers
this.bind();
/**
* @attribute element
* The controller instance's delegated element. This
* is set by [jQuery.Controller.prototype.setup setup]. It
* is a jQuery wrapped element.
*
* For example, if I add MyWidget to a '#myelement' element like:
*
* $.Controller("MyWidget",{
* init : function(){
* this.element.css("color","red")
* }
* })
*
* $("#myelement").my_widget()
*
* MyWidget will turn #myelement's font color red.
*
* ## Using a different element.
*
* Sometimes, you want a different element to be this.element. A
* very common example is making progressively enhanced form widgets.
*
* To change this.element, overwrite Controller's setup method like:
*
* $.Controller("Combobox",{
* setup : function(el, options){
* this.oldElement = $(el);
* var newEl = $('<div/>');
* this.oldElement.wrap(newEl);
* this._super(newEl, options);
* },
* init : function(){
* this.element //-> the div
* },
* ".option click" : function(){
* // event handler bound on the div
* },
* destroy : function(){
* var div = this.element; //save reference
* this._super();
* div.replaceWith(this.oldElement);
* }
* }
*/
return [this.element, this.options].concat(makeArray(arguments).slice(2));
/**
* @function init
*
* Implement this.
*/
},
/**
* Bind attaches event handlers that will be
* removed when the controller is removed.
*
* This used to be a good way to listen to events outside the controller's
* [jQuery.Controller.prototype.element element]. However,
* using templated event listeners is now the prefered way of doing this.
*
* ### Example:
*
* init: function() {
* // calls somethingClicked(el,ev)
* this.bind('click','somethingClicked')
*
* // calls function when the window is clicked
* this.bind(window, 'click', function(ev){
* //do something
* })
* },
* somethingClicked: function( el, ev ) {
*
* }
*
* @param {HTMLElement|jQuery.fn|Object} [el=this.element]
* The element to be bound. If an eventName is provided,
* the controller's element is used instead.
*
* @param {String} eventName The event to listen for.
* @param {Function|String} func A callback function or the String name of a controller function. If a controller
* function name is given, the controller function is called back with the bound element and event as the first
* and second parameter. Otherwise the function is called back like a normal bind.
* @return {Integer} The id of the binding in this._bindings
*/
bind: function( el, eventName, func ) {
if( el === undefined ) {
//adds bindings
this._bindings = [];
//go through the cached list of actions and use the processor to bind
var cls = this[STR_CONSTRUCTOR],
bindings = this._bindings,
actions = cls.actions,
element = this.element;
for ( funcName in actions ) {
if ( actions.hasOwnProperty(funcName) ) {
ready = actions[funcName] || cls._action(funcName, this.options);
bindings.push(
ready.processor(ready.delegate || element,
ready.parts[2],
ready.parts[1],
funcName,
this));
}
}
//setup to be destroyed ... don't bind b/c we don't want to remove it
var destroyCB = shifter(this,"destroy");
element.bind("destroyed", destroyCB);
bindings.push(function( el ) {
$(el).unbind("destroyed", destroyCB);
});
return bindings.length;
}
if ( typeof el == 'string' ) {
func = eventName;
eventName = el;
el = this.element;
}
return this._binder(el, eventName, func);
},
_binder: function( el, eventName, func, selector ) {
if ( typeof func == 'string' ) {
func = shifter(this,func);
}
this._bindings.push(binder(el, eventName, func, selector));
return this._bindings.length;
},
_unbind : function(){
var el = this.element[0];
each(this._bindings, function( key, value ) {
value(el);
});
//adds bindings
this._bindings = [];
},
/**
* Delegate will delegate on an elememt and will be undelegated when the controller is removed.
* This is a good way to delegate on elements not in a controller's element.<br/>
* <h3>Example:</h3>
* @codestart
* // calls function when the any 'a.foo' is clicked.
* this.delegate(document.documentElement,'a.foo', 'click', function(ev){
* //do something
* })
* @codeend
* @param {HTMLElement|jQuery.fn} [element=this.element] the element to delegate from
* @param {String} selector the css selector
* @param {String} eventName the event to bind to
* @param {Function|String} func A callback function or the String name of a controller function. If a controller
* function name is given, the controller function is called back with the bound element and event as the first
* and second parameter. Otherwise the function is called back like a normal bind.
* @return {Integer} The id of the binding in this._bindings
*/
delegate: function( element, selector, eventName, func ) {
if ( typeof element == 'string' ) {
func = eventName;
eventName = selector;
selector = element;
element = this.element;
}
return this._binder(element, eventName, func, selector);
},
/**
* Update extends [jQuery.Controller.prototype.options this.options]
* with the `options` argument and rebinds all events. It basically
* re-configures the controller.
*
* For example, the following controller wraps a recipe form. When the form
* is submitted, it creates the recipe on the server. When the recipe
* is `created`, it resets the form with a new instance.
*
* $.Controller('Creator',{
* "{recipe} created" : function(){
* this.update({recipe : new Recipe()});
* this.element[0].reset();
* this.find("[type=submit]").val("Create Recipe")
* },
* "submit" : function(el, ev){
* ev.preventDefault();
* var recipe = this.options.recipe;
* recipe.attrs( this.element.formParams() );
* this.find("[type=submit]").val("Saving...")
* recipe.save();
* }
* });
* $('#createRecipes').creator({recipe : new Recipe()})
*
*
* @demo jquery/controller/demo-update.html
*
* Update is called if a controller's [jquery.controller.plugin jQuery helper] is
* called on an element that already has a controller instance
* of the same type.
*
* For example, a widget that listens for model updates
* and updates it's html would look like.
*
* $.Controller('Updater',{
* // when the controller is created, update the html
* init : function(){
* this.updateView();
* },
*
* // update the html with a template
* updateView : function(){
* this.element.html( "content.ejs",
* this.options.model );
* },
*
* // if the model is updated
* "{model} updated" : function(){
* this.updateView();
* },
* update : function(options){
* // make sure you call super
* this._super(options);
*
* this.updateView();
* }
* })
*
* // create the controller
* // this calls init
* $('#item').updater({model: recipe1});
*
* // later, update that model
* // this calls "{model} updated"
* recipe1.update({name: "something new"});
*
* // later, update the controller with a new recipe
* // this calls update
* $('#item').updater({model: recipe2});
*
* // later, update the new model
* // this calls "{model} updated"
* recipe2.update({name: "something newer"});
*
* _NOTE:_ If you overwrite `update`, you probably need to call
* this._super.
*
* ### Example
*
* $.Controller("Thing",{
* init: function( el, options ) {
* alert( 'init:'+this.options.prop )
* },
* update: function( options ) {
* this._super(options);
* alert('update:'+this.options.prop)
* }
* });
* $('#myel').thing({prop : 'val1'}); // alerts init:val1
* $('#myel').thing({prop : 'val2'}); // alerts update:val2
*
* @param {Object} options A list of options to merge with
* [jQuery.Controller.prototype.options this.options]. Often, this method
* is called by the [jquery.controller.plugin jQuery helper function].
*/
update: function( options ) {
extend(this.options, options);
this._unbind();
this.bind();
},
/**
* Destroy unbinds and undelegates all event handlers on this controller,
* and prevents memory leaks. This is called automatically
* if the element is removed. You can overwrite it to add your own
* teardown functionality:
*
* $.Controller("ChangeText",{
* init : function(){
* this.oldText = this.element.text();
* this.element.text("Changed!!!")
* },
* destroy : function(){
* this.element.text(this.oldText);
* this._super(); //Always call this!
* })
*
* Make sure you always call <code>_super</code> when overwriting
* controller's destroy event. The base destroy functionality unbinds
* all event handlers the controller has created.
*
* You could call destroy manually on an element with ChangeText
* added like:
*
* $("#changed").change_text("destroy");
*
*/
destroy: function() {
if ( this._destroyed ) {
throw this[STR_CONSTRUCTOR].shortName + " controller already deleted";
}
var self = this,
fname = this[STR_CONSTRUCTOR].pluginName || this[STR_CONSTRUCTOR]._fullName,
controllers;
// mark as destroyed
this._destroyed = true;
// remove the className
this.element.removeClass(fname);
// unbind bindings
this._unbind();
// clean up
delete this._actions;
delete this.element.data("controllers")[fname];
$(this).triggerHandler("destroyed"); //in case we want to know if the controller is removed
this.element = null;
},
/**
* Queries from the controller's element.
* @codestart
* ".destroy_all click" : function() {
* this.find(".todos").remove();
* }
* @codeend
* @param {String} selector selection string
* @return {jQuery.fn} returns the matched elements
*/
find: function( selector ) {
return this.element.find(selector);
},
//tells callback to set called on this. I hate this.
_set_called: true
});
var processors = $.Controller.processors,
//------------- PROCESSSORS -----------------------------
//processors do the binding. They return a function that
//unbinds when called.
//the basic processor that binds events
basicProcessor = function( el, event, selector, methodName, controller ) {
return binder(el, event, shifter(controller, methodName), selector);
};
//set common events to be processed as a basicProcessor
each("change click contextmenu dblclick keydown keyup keypress mousedown mousemove mouseout mouseover mouseup reset resize scroll select submit focusin focusout mouseenter mouseleave".split(" "), function( i, v ) {
processors[v] = basicProcessor;
});
/**
* @add jQuery.fn
*/
//used to determine if a controller instance is one of controllers
//controllers can be strings or classes
var i, isAControllerOf = function( instance, controllers ) {
for ( i = 0; i < controllers.length; i++ ) {
if ( typeof controllers[i] == 'string' ? instance[STR_CONSTRUCTOR]._shortName == controllers[i] : instance instanceof controllers[i] ) {
return true;
}
}
return false;
};
$.fn.extend({
/**
* @function controllers
* Gets all controllers in the jQuery element.
* @return {Array} an array of controller instances.
*/
controllers: function() {
var controllerNames = makeArray(arguments),
instances = [],
controllers, c, cname;
//check if arguments
this.each(function() {
controllers = $.data(this, "controllers");
for ( cname in controllers ) {
if ( controllers.hasOwnProperty(cname) ) {
c = controllers[cname];
if (!controllerNames.length || isAControllerOf(c, controllerNames) ) {
instances.push(c);
}
}
}
});
return instances;
},
/**
* @function controller
* Gets a controller in the jQuery element. With no arguments, returns the first one found.
* @param {Object} controller (optional) if exists, the first controller instance with this class type will be returned.
* @return {jQuery.Controller} the first controller.
*/
controller: function( controller ) {
return this.controllers.apply(this, arguments)[0];
}
});
});