App.Base Class

Uses

Extends Base

Defined in: app/js/app-base.js:51

Module: app-base
Parent Module: app

Available since 3.5.0

Provides a top-level application component which manages navigation and views.

This gives you a foundation and structure on which to build your application; it combines robust URL navigation with powerful routing and flexible view management.

Constructor

`App.Base`

(

[config]

)

Defined in app/js/app-base.js:51

Available since 3.5.0

Parameters:

[config] Object optional

The following are configuration properties that can be specified in addition to default attribute values and the non-attribute properties provided by Y.Base:
- [views] Object optional
  
  Hash of view-name to metadata used to declaratively describe an application's views and their relationship with the app and other views. The views specified here will override any defaults provided by the views object on the prototype.

Index
Methods
Properties
Attributes
Events

Item Index

Methods

`_addAttrs`

(

cfgs
values
lazy

)

private

Inherited from AttributeCore: attribute/js/AttributeCore.js:769

Implementation behind the public addAttrs method.

This method is invoked directly by get if it encounters a scenario in which an attribute's valueFn attempts to obtain the value an attribute in the same group of attributes, which has not yet been added (on demand initialization).

Parameters:

cfgs Object

An object with attribute name/configuration pairs.
values Object

An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.
lazy Boolean

Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.

`_addLazyAttr`

(

name

)

private

Inherited from AttributeCore: attribute/js/AttributeCore.js:340

Finishes initializing an attribute which has been lazily added.

Parameters:

name Object

The name of the attribute

`_afterActiveViewChange`

(

)

protected

Defined in app/js/app-base.js:801

Available since 3.5.0

Handles the application's activeViewChange event (which is fired when the activeView attribute changes) by detaching the old view, attaching the new view.

The activeView attribute is read-only, so the public API to change its value is through the showView() method.

Parameters:

e EventFacade

`_afterContainerChange`

() protected

Inherited from View: app/js/view.js:357

Available since 3.5.0

Handles containerChange events. Detaches event handlers from the old container (if any) and attaches them to the new container.

Right now the container attr is initOnly so this event should only ever fire the first time the container is created, but in the future (once Y.App can handle it) we may allow runtime container changes.

`_afterHistoryChange`

(

)

protected

Inherited from Router: app/js/router.js:1259

Handles history:change and hashchange events.

Parameters:

e EventFacade

`_aggregateAttrs`

(

allAttrs

)

Object private

Inherited from BaseCore: base/js/BaseCore.js:451

A helper method, used by _initHierarchyData to aggregate attribute configuration across the instances class hierarchy.

The method will protect the attribute configuration value to protect the statically defined default value in ATTRS if required (if the value is an object literal, array or the attribute configuration has cloneDefaultValue set to shallow or deep).

Parameters:

allAttrs Array

An array of ATTRS definitions across classes in the hierarchy (subclass first, Base last)

Returns:

Object: The aggregate set of ATTRS definitions for the instance

`_attachView`

(

view
prepend=false

)

protected

Defined in app/js/app-base.js:434

Available since 3.5.0

Helper method to attach the view instance to the application by making the app a bubble target of the view, append the view to the viewContainer, and assign it to the instance property of the associated view info metadata.

Parameters:

view View

View to attach.
prepend=false Boolean

Whether the view should be prepended instead of appended to the viewContainer.

`_attrCfgHash`

() private

Inherited from BaseCore: base/js/BaseCore.js:440

Utility method to define the attribute hash used to filter/whitelist property mixes for this class.

`_baseDestroy`

() private

Inherited from BaseCore: base/js/BaseCore.js:264

Internal destroy implementation for BaseCore

`_baseInit`

() private

Inherited from BaseCore: base/js/BaseCore.js:236

Internal initialization implementation for BaseCore

`_decode`

(

string

)

String protected

Inherited from Router: app/js/router.js:566

Wrapper around decodeURIComponent that also converts + chars into spaces.

Parameters:

string String

String to decode.

Returns:

String: Decoded string.

`_defAttrChangeFn`

(

)

private

Inherited from AttributeObservable: attribute/js/AttributeObservable.js:171

Default function for attribute change events.

Parameters:

e EventFacade

The event object for attribute change events.

`_defDestroyFn`

(

)

protected

Inherited from BaseObservable: base/js/BaseObservable.js:184

Default destroy event handler

Parameters:

e EventFacade

Event object

`_defInitFn`

(

)

protected

Inherited from BaseObservable: base/js/BaseObservable.js:172

Default init event handler

Parameters:

e EventFacade

Event object, with a cfg property which refers to the configuration object passed to the constructor.

`_defNavigateFn`

(

)

protected

Inherited from PjaxBase: pjax/js/pjax-base.js:300

Available since 3.5.0

Default handler for the navigate event.

Adds a new history entry or replaces the current entry for the specified URL and will scroll the page to the top if configured to do so.

Parameters:

e EventFacade

`_defReadyFn`

(

)

protected

Inherited from Router: app/js/router.js:1290

Default handler for the ready event.

Parameters:

e EventFacade

`_dequeue`

() protected chainable

Inherited from Router: app/js/router.js:579

Shifts the topmost _save() call off the queue and executes it. Does nothing if the queue is empty.

`_destroyContainer`

() protected

Inherited from View but overwritten in app/js/app-base.js:472

Overrides View's container destruction to deal with the viewContainer and checks to make sure not to remove and purge the <body>.

`_destroyHierarchy`

() private

Inherited from BaseCore: base/js/BaseCore.js:587

Destroys the class hierarchy for this instance by invoking the destructor method on the prototype of each class in the hierarchy.

`_detachView`

(

view

)

protected

Defined in app/js/app-base.js:514

Available since 3.5.0

Helper method to detach the view instance from the application by removing the application as a bubble target of the view, and either just removing the view if it is intended to be preserved, or destroying the instance completely.

Parameters:

view View

View to detach.

`_dispatch`

(

path
url
src

)

protected chainable

Inherited from Router: app/js/router.js:607

Dispatches to the first route handler that matches the specified path.

If called before the ready event has fired, the dispatch will be aborted. This ensures normalized behavior between Chrome (which fires a popstate event on every pageview) and other browsers (which do not).

Parameters:

path String

URL path.
url String

Full URL.
src String

What initiated the dispatch.

`_filterAdHocAttrs`

(

allAttrs
userVals

)

Object private

Inherited from BaseCore: base/js/BaseCore.js:343

Parameters:

allAttrs Object

The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.
userVals Object

The config object passed in by the user, from which adhoc attrs are to be filtered.

Returns:

Object: The set of adhoc attributes passed in, in the form of an object with attribute name/configuration pairs.

`_filterAttrCfs`

(

clazz
allCfgs

)

Object private

Inherited from BaseCore: base/js/BaseCore.js:311

A helper method used when processing ATTRS across the class hierarchy during initialization. Returns a disposable object with the attributes defined for the provided class, extracted from the set of all attributes passed in.

Parameters:

clazz Function

The class for which the desired attributes are required.
allCfgs Object

The set of all attribute configurations for this instance. Attributes will be removed from this set, if they belong to the filtered class, so that by the time all classes are processed, allCfgs will be empty.

Returns:

Object: The set of attributes belonging to the class passed in, in the form of an object with attribute name/configuration pairs.

`_fireAttrChange`

(

attrName
subAttrName
currVal
newVal
opts

)

private

Inherited from AttributeObservable: attribute/js/AttributeObservable.js:117

Utility method to help setup the event payload and fire the attribute change event.

Parameters:

attrName String

The name of the attribute
subAttrName String

The full path of the property being changed, if this is a sub-attribute value being change. Otherwise null.
currVal Any

The current value of the attribute
newVal Any

The new value of the attribute
opts Object

Any additional event data to mix into the attribute change event's event facade.

`_getAttr`

(

name

)

Any protected chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:496

Provides the common implementation for the public get method, allowing Attribute hosts to over-ride either method.

See get for argument details.

Parameters:

name String

The name of the attribute.

Returns:

Any: The value of the attribute.

`_getAttrCfg`

(

name

)

Object protected

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:113

Returns an object with the configuration properties (and value) for the given attribute. If attrName is not provided, returns the configuration properties for all attributes.

Parameters:

name String

Optional. The attribute name. If not provided, the method will return the configuration for all attributes.

Returns:

Object: The configuration properties for the given attribute, or all attributes.

`_getAttrCfgs`

() Object protected

Inherited from BaseCore: base/js/BaseCore.js:294

Returns an aggregated set of attribute configurations, by traversing the class hierarchy.

Returns:

Object: The hash of attribute configurations, aggregated across classes in the hierarchy This value is cached the first time the method, or _getClasses, is invoked. Subsequent invocations return the cached value.

`_getAttrInitVal`

(

attr
cfg
initValues

)

Any private

Inherited from AttributeCore: attribute/js/AttributeCore.js:872

Returns the initial value of the given attribute from either the default configuration provided, or the over-ridden value if it exists in the set of initValues provided and the attribute is not read-only.

Parameters:

attr String

The name of the attribute
cfg Object

The attribute configuration object
initValues Object

The object with simple and complex attribute name/value pairs returned from _normAttrVals

Returns:

Any: The initial value of the attribute.

`_getAttrs`

(

attrs

)

Object protected

Inherited from AttributeCore: attribute/js/AttributeCore.js:706

Implementation behind the public getAttrs method, to get multiple attribute values.

Parameters:

attrs Array | boolean

Optional. An array of attribute names. If omitted, all attribute values are returned. If set to true, all attributes modified from their initial values are returned.

Returns:

Object: An object with attribute name/value pairs.

`_getClasses`

() Function[] protected

Inherited from BaseCore: base/js/BaseCore.js:278

Returns the class hierarchy for this object, with BaseCore being the last class in the array.

Returns:

Function[]: An array of classes (constructor functions), making up the class hierarchy for this object. This value is cached the first time the method, or _getAttrCfgs, is invoked. Subsequent invocations return the cached value.

`_getContainer`

(

value

)

Node protected

Inherited from View: app/js/view.js:323

Available since 3.5.0

Getter for the container attribute.

Parameters:

value Node | Null

Current attribute value.

Returns:

Node: Container node.

`_getHashPath`

(

[hash]

)

String protected

Inherited from Router: app/js/router.js:692

Returns the resolved path from the hash fragment, or an empty string if the hash is not path-like.

Parameters:

[hash] String optional

Hash fragment to resolve into a path. By default this will be the hash from the current URL.

Returns:

String: Current hash path, or an empty string if the hash is empty.

`_getOrigin`

() String protected

Inherited from Router: app/js/router.js:713

Gets the location origin (i.e., protocol, host, and port) as a URL.

Returns:

String: Location origin (i.e., protocol, host, and port).

Example:

http://example.com

`_getPath`

() String protected

Inherited from Router: app/js/router.js:728

Gets the current route path, relative to the root (if any).

Returns:

String: Current route path.

`_getPathRoot`

() String protected

Inherited from Router: app/js/router.js:742

Available since 3.5.0

Returns the current path root after popping off the last path segment, making it useful for resolving other URL paths against.

The path root will always begin and end with a '/'.

Returns:

String: The URL's path root.

`_getQuery`

() String protected

Inherited from Router: app/js/router.js:768

Gets the current route query string.

Returns:

String: Current route query string.

`_getRegex`

(

path
keys

)

RegExp protected

Inherited from Router: app/js/router.js:789

Creates a regular expression from the given route specification. If path is already a regex, it will be returned unmodified.

Parameters:

path String | RegExp

Route path specification.
keys Array

Array reference to which route parameter names will be added.

Returns:

RegExp: Route regex.

`_getRequest`

(

path
url
src

)

Object protected

Inherited from Router: app/js/router.js:824

Gets a request object that can be passed to a route handler.

Parameters:

path String

Current path being dispatched.
url String

Current full URL being dispatched.
src String

What initiated the dispatch.

Returns:

Object: Request object.

`_getResponse`

(

req

)

Object protected

Inherited from Router: app/js/router.js:843

Gets a response object that can be passed to a route handler.

Parameters:

req Object

Request object.

Returns:

Object: Response Object.

`_getRoutes`

() Object[] protected

Inherited from Router: app/js/router.js:862

Getter for the routes attribute.

Returns:

Object[]: Array of route objects.

`_getStateVal`

(

name

)

Any private

Inherited from AttributeCore: attribute/js/AttributeCore.js:550

Gets the stored value for the attribute, from either the internal state object, or the state proxy if it exits

Parameters:

name String

The name of the attribute

Returns:

Any: The stored value of the attribute

`_getType`

() private

Inherited from EventTarget: event-custom/js/event-target.js:36

If the instance has a prefix attribute and the event type is not prefixed, the instance prefix is applied to the supplied type.

`_getURL`

() String protected

Inherited from Router: app/js/router.js:873

Gets the current full URL.

Returns:

String: URL.

`_getViewContainer`

(

value

)

Node protected

Defined in app/js/app-base.js:555

Available since 3.5.0

Getter for the viewContainer attribute.

Parameters:

value Node | Null

Current attribute value.

Returns:

Node: View container node.

`_hasSameOrigin`

(

url

)

Boolean protected

Inherited from Router: app/js/router.js:890

Returns true when the specified url is from the same origin as the current URL; i.e., the protocol, host, and port of the URLs are the same.

All host or path relative URLs are of the same origin. A scheme-relative URL is first prefixed with the current scheme before being evaluated.

Parameters:

url String

URL to compare origin with the current URL.

Returns:

Boolean: Whether the URL has the same origin of the current URL.

`_initAttrHost`

(

attrs
values
lazy

)

private

Inherited from AttributeCore: attribute/js/AttributeCore.js:137

Constructor logic for attributes. Initializes the host state, and sets up the inital attributes passed to the constructor.

Parameters:

attrs Object

The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.
values Object

The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.
lazy Boolean

Whether or not to add attributes lazily (passed through to addAttrs).

`_initAttribute`

() private

Inherited from BaseObservable but overwritten in base/js/BaseCore.js:209

Initializes AttributeCore

`_initAttrs`

(

attrs
values
lazy

)

protected

Inherited from AttributeCore: attribute/js/AttributeCore.js:938

Utility method to set up initial attributes defined during construction, either through the constructor.ATTRS property, or explicitly passed in.

Parameters:

attrs Object

The attributes to add during construction (passed through to addAttrs). These can also be defined on the constructor being augmented with Attribute by defining the ATTRS property on the constructor.
values Object

The initial attribute values to apply (passed through to addAttrs). These are not merged/cloned. The caller is responsible for isolating user provided values if required.
lazy Boolean

Whether or not to add attributes lazily (passed through to addAttrs).

`_initBase`

(

config

)

private

Inherited from BaseCore: base/js/BaseCore.js:174

Internal construction logic for BaseCore.

Parameters:

config Object

The constructor configuration object

`_initHierarchy`

(

userVals

)

private

Inherited from BaseCore: base/js/BaseCore.js:529

Initializes the class hierarchy for the instance, which includes initializing attributes for each class defined in the class's static ATTRS property and invoking the initializer method on the prototype of each class in the hierarchy.

Parameters:

userVals Object

Object with configuration property name/value pairs

`_initHierarchyData`

() private

Inherited from BaseCore: base/js/BaseCore.js:373

A helper method used by _getClasses and _getAttrCfgs, which determines both the array of classes and aggregate set of attribute configurations across the class hierarchy for the instance.

`_initHtml5`

() Boolean protected

Defined in app/js/app-base.js:580

Available since 3.5.0

Provides the default value for the html5 attribute.

The value returned is dependent on the value of the serverRouting attribute. When serverRouting is explicit set to false (not just falsy), the default value for html5 will be set to false for all browsers.

When serverRouting is true or undefined the returned value will be dependent on the browser's capability of using HTML5 history.

Returns:

Boolean: Whether or not HTML5 history should be used.

`_isChildView`

(

view
parent

)

Boolean protected

Defined in app/js/app-base.js:606

Available since 3.5.0

Determines if the specified view is configured as a child of the specified parent view. This requires both views to be either named-views, or view instances created using configuration data that exists in the views object, e.g. created by the createView() or showView() method.

Parameters:

view View | String

The name of a view defined in the views object, or a view instance.
parent View | String

The name of a view defined in the views object, or a view instance.

Returns:

Boolean: Whether the view is configured as a child of the parent.

`_isLazyAttr`

(

name

)

Boolean private

Inherited from AttributeCore: attribute/js/AttributeCore.js:327

Checks whether or not the attribute is one which has been added lazily and still requires initialization.

Parameters:

name String

The name of the attribute

Returns:

Boolean: true if it's a lazily added attribute, false otherwise.

`_isLinkSameOrigin`

(

link

)

Boolean protected

Inherited from PjaxBase: pjax/js/pjax-base.js:161

Available since 3.6.0

Utility method to test whether a specified link/anchor node's href is of the same origin as the page's current location.

This normalize browser inconsistencies with how the port is reported for anchor elements (IE reports a value for the default port, e.g. "80").

Parameters:

link Node

The anchor element to test whether its href is of the same origin as the page's current location.

Returns:

Boolean: Whether or not the link's href is of the same origin as the page's current location.

`_isParentView`

(

view
parent

)

Boolean protected

Defined in app/js/app-base.js:632

Available since 3.5.0

Determines if the specified view is configured as the parent of the specified child view. This requires both views to be either named-views, or view instances created using configuration data that exists in the views object, e.g. created by the createView() or showView() method.

Parameters:

view View | String

The name of a view defined in the views object, or a view instance.
parent View | String

The name of a view defined in the views object, or a view instance.

Returns:

Boolean: Whether the view is configured as the parent of the child.

`_joinURL`

(

url

)

String protected

Inherited from Router: app/js/router.js:913

Joins the root URL to the specified url, normalizing leading/trailing / characters.

Parameters:

url String

URL to append to the root URL.

Returns:

String: Joined URL.

Example:

router.set('root', '/foo');
router._joinURL('bar');  // => '/foo/bar'
router._joinURL('/bar'); // => '/foo/bar'

router.set('root', '/foo/');
router._joinURL('bar');  // => '/foo/bar'
router._joinURL('/bar'); // => '/foo/bar'

`_monitor`

(

what
eventType
o

)

private

Inherited from EventTarget: event-custom/js/event-target.js:604

This is the entry point for the event monitoring system. You can monitor 'attach', 'detach', 'fire', and 'publish'. When configured, these events generate an event. click -> clickattach, clickdetach, click_publish -- these can be subscribed to like other events to monitor the event system. Inividual published events can have monitoring turned on or off (publish can't be turned off before it it published) by setting the events 'monitor' config.

Parameters:

what String

'attach', 'detach', 'fire', or 'publish'
eventType String | CustomEvent

The prefixed name of the event being monitored, or the CustomEvent object.
o Object

Information about the event interaction, such as fire() args, subscription category, publish config

`_navigate`

(

url
[options]

)

protected

Inherited from PjaxBase but overwritten in app/js/app-base.js:658

Underlying implementation for navigate().

Parameters:

url String

The fully-resolved URL that the app should dispatch to its route handlers to fulfill the enhanced navigation "request", or use to update window.location in non-HTML5 history capable browsers when serverRouting is true.
[options] Object optional

Additional options to configure the navigation. These are mixed into the navigate event facade.
- [replace] Boolean optional
  
  Whether or not the current history entry will be replaced, or a new entry will be created. Will default to true if the specified url is the same as the current URL.
- [force] Boolean optional
  
  Whether the enhanced navigation should occur even in browsers without HTML5 history. Will default to true when serverRouting is falsy.

`_normalizePath`

(

path

)

String protected

Inherited from Router: app/js/router.js:946

Available since 3.5.0

Returns a normalized path, ridding it of any '..' segments and properly handling leading and trailing slashes.

Parameters:

path String

URL path to normalize.

Returns:

String: Normalized path.

`_normAttrVals`

(

valueHash

)

Object private

Inherited from AttributeCore: attribute/js/AttributeCore.js:829

Utility method to split out simple attribute name/value pairs ("x") from complex attribute name/value pairs ("x.y.z"), so that complex attributes can be keyed by the top level attribute name.

Parameters:

valueHash Object

An object with attribute name/value pairs

Returns:

Object: An object literal with 2 properties - "simple" and "complex", containing simple and complex attribute values respectively keyed by the top level attribute name, or null, if valueHash is falsey.

`_onLinkClick`

(

)

protected

Inherited from PjaxBase: pjax/js/pjax-base.js:325

Available since 3.5.0

Handler for delegated link-click events which match the linkSelector.

This will attempt to enhance the navigation to the link element's href by passing the URL to the _navigate() method. When the navigation is being enhanced, the default action is prevented.

If the user clicks a link with the middle/right mouse buttons, or is holding down the Ctrl or Command keys, this method's behavior is not applied and allows the native behavior to occur. Similarly, if the router is not capable or handling the URL because no route-handlers match, the link click will behave natively.

Parameters:

e EventFacade

`_parseQuery`

(

query

)

Object protected

Inherited from Router: app/js/router.js:988

Parses a URL query string into a key/value hash. If Y.QueryString.parse is available, this method will be an alias to that.

Parameters:

query String

Query string to parse.

Returns:

Object: Hash of key/value pairs for query parameters.

`_parseType`

() private

Inherited from EventTarget: event-custom/js/event-target.js:52

Returns an array with the detach key (if provided), and the prefixed event name from _getType Y.on('detachcategory| menu:click', fn)

`_pjaxBindUI`

() protected

Inherited from PjaxBase: pjax/js/pjax-base.js:279

Available since 3.5.0

Binds the delegation of link-click events that match the linkSelector to the _onLinkClick() handler.

By default this method will only be called if the browser is capable of using HTML5 history.

`_preInitEventCfg`

(

config

)

private

Inherited from BaseObservable: base/js/BaseObservable.js:92

Handles the special on, after and target properties which allow the user to easily configure on and after listeners as well as bubble targets during construction, prior to init.

Parameters:

config Object

The user configuration object

`_protectAttrs`

(

attrs

)

Object deprecated protected

Inherited from AttributeCore: attribute/js/AttributeCore.js:815

Deprecated: Use `AttributeCore.protectAttrs()` or `Attribute.protectAttrs()` which are the same static utility method.

Utility method to protect an attribute configuration hash, by merging the entire object and the individual attr config objects.

Parameters:

attrs Object

A hash of attribute to configuration object pairs.

Returns:

Object: A protected version of the attrs argument.

`_queue`

() protected chainable

Inherited from Router: app/js/router.js:1016

Queues up a _save() call to run after all previously-queued calls have finished.

This is necessary because if we make multiple _save() calls before the first call gets dispatched, then both calls will dispatch to the last call's URL.

All arguments passed to _queue() will be passed on to _save() when the queued function is executed.

`_resolvePath`

(

path

)

String protected

Inherited from Router: app/js/router.js:1061

Available since 3.5.0

Returns the normalized result of resolving the path against the current path. Falsy values for path will return just the current path.

Parameters:

path String

URL path to resolve.

Returns:

String: Resolved path.

`_resolveURL`

(

url

)

String protected

Inherited from Router: app/js/router.js:1083

Available since 3.5.0

Resolves the specified URL against the current URL.

This method resolves URLs like a browser does and will always return an absolute URL. When the specified URL is already absolute, it is assumed to be fully resolved and is simply returned as is. Scheme-relative URLs are prefixed with the current protocol. Relative URLs are giving the current URL's origin and are resolved and normalized against the current path root.

Parameters:

url String

URL to resolve.

Returns:

String: Resolved URL.

`_save`

(

[url]
[replace=false]

)

protected chainable

Inherited from Router but overwritten in app/js/app-base.js:688

Will either save a history entry using pushState() or the location hash, or gracefully-degrade to sending a request to the server causing a full-page reload.

Overrides Router's _save() method to preform graceful-degradation when the app's serverRouting is true and html5 is false by updating the full URL via standard assignment to window.location or by calling window.location.replace(); both of which will cause a request to the server resulting in a full-page reload.

Otherwise this will just delegate off to Router's _save() method allowing the client-side enhanced routing to occur.

Parameters:

[url] String optional

URL for the history entry.
[replace=false] Boolean optional

If true, the current history entry will be replaced instead of a new one being added.

`_set`

(

name
val

)

Object protected chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:374

Allows setting of readOnly/writeOnce attributes. See set for argument details.

Parameters:

name String

The name of the attribute.
val Any

The value to set the attribute to.

Returns:

Object: A reference to the host object.

`_setAttr`

(

name
value
opts
force

)

Object protected chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:389

Provides the common implementation for the public set and protected _set methods.

See set for argument details.

Parameters:

name String

The name of the attribute.
value Any

The value to set the attribute to.
opts Object

(Optional) Optional event data to be mixed into the event facade passed to subscribers of the attribute's change event. This is currently a hack. There's no real need for the AttributeCore implementation to support this parameter, but breaking it out into AttributeObservable, results in additional function hops for the critical path.
force Boolean

If true, allows the caller to set values for readOnly or writeOnce attributes which have already been set.

Returns:

Object: A reference to the host object.

`_setAttrs`

(

attrs

)

Object protected chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:675

Implementation behind the public setAttrs method, to set multiple attribute values.

Parameters:

attrs Object

An object with attributes name/value pairs.

Returns:

Object: A reference to the host object.

`_setAttrVal`

(

attrName
subAttrName
prevVal
newVal

)

Booolean private

Inherited from AttributeCore: attribute/js/AttributeCore.js:582

Updates the stored value of the attribute in the privately held State object, if validation and setter passes.

Parameters:

attrName String

The attribute name.
subAttrName String

The sub-attribute name, if setting a sub-attribute property ("x.y.z").
prevVal Any

The currently stored value of the attribute.
newVal Any

The value which is going to be stored.

Returns:

Booolean: true if the new attribute value was stored, false if not.

`_setRoutes`

(

routes

)

Object[] protected

Inherited from Router: app/js/router.js:1193

Setter for the routes attribute.

Parameters:

routes Object[]

Array of route objects.

Returns:

Object[]: Array of route objects.

`_setStateVal`

(

name
value

)

private

Inherited from AttributeCore: attribute/js/AttributeCore.js:564

Sets the stored value for the attribute, in either the internal state object, or the state proxy if it exits

Parameters:

name String

The name of the attribute
value Any

The value of the attribute

`_uiSetActiveView`

(

newView
[oldView]
[options]

)

protected

Defined in app/js/app-base.js:741

Available since 3.5.0

Performs the actual change of this app's activeView by attaching the newView to this app, and detaching the oldView from this app using any specified options.

The newView is attached to the app by rendering it to the viewContainer, and making this app a bubble target of its events.

The oldView is detached from the app by removing it from the viewContainer, and removing this app as a bubble target for its events. The oldView will either be preserved or properly destroyed.

Note: The activeView attribute is read-only and can be changed by calling the showView() method.

Parameters:

newView View

The View which is now this app's activeView.
[oldView] View optional

The View which was this app's activeView.
[options] Object optional

Optional object containing any of the following properties:
- [callback] Function optional
  
  Optional callback function to call after new activeView is ready to use, the function will be passed:
  - view View
    A reference to the new activeView.
- [prepend=false] Boolean optional
  
  Whether the view should be prepended instead of appended to the viewContainer.
- [render] Boolean optional
  
  Whether the view should be rendered. Note: If no value is specified, a view instance will only be rendered if it's newly created by this method.
- [update=false] Boolean optional
  
  Whether an existing view should have its attributes updated by passing the config object to its setAttrs() method. Note: This option does not have an effect if the view instance is created as a result of calling this method.

`_upgradeURL`

(

url

)

String protected

Inherited from Router: app/js/router.js:1214

Available since 3.5.0

Upgrades a hash-based URL to a full-path URL, if necessary.

The specified url will be upgraded if its of the same origin as the current URL and has a path-like hash. URLs that don't need upgrading will be returned as-is.

Parameters:

url String

The URL to upgrade from hash-based to full-path.

Returns:

String: The upgraded URL, or the specified URL untouched.

Example:

app._upgradeURL('http://example.com/#/foo/'); // => 'http://example.com/foo/';

`addAttr`

(

name
config
lazy

)

Object chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:152

Adds an attribute with the provided configuration to the host object.

The config argument object supports the following properties:

value <Any>

The initial value to set on the attribute

valueFn <Function | String>

A function, which will return the initial value to set on the attribute. This is useful for cases where the attribute configuration is defined statically, but needs to reference the host instance ("this") to obtain an initial value. If both the value and valueFn properties are defined, the value returned by the valueFn has precedence over the value property, unless it returns undefined, in which case the value property is used.

valueFn can also be set to a string, representing the name of the instance method to be used to retrieve the value.

readOnly <boolean>

Whether or not the attribute is read only. Attributes having readOnly set to true cannot be modified by invoking the set method.

writeOnce <boolean> or <string>

Whether or not the attribute is "write once". Attributes having writeOnce set to true, can only have their values set once, be it through the default configuration, constructor configuration arguments, or by invoking set.

The writeOnce attribute can also be set to the string "initOnly", in which case the attribute can only be set during initialization (when used with Base, this means it can only be set during construction)

setter <Function | String>

The setter function used to massage or normalize the value passed to the set method for the attribute. The value returned by the setter will be the final stored value. Returning Attribute.INVALID_VALUE, from the setter will prevent the value from being stored.

setter can also be set to a string, representing the name of the instance method to be used as the setter function.

getter <Function | String>

The getter function used to massage or normalize the value returned by the get method for the attribute. The value returned by the getter function is the value which will be returned to the user when they invoke get.

getter can also be set to a string, representing the name of the instance method to be used as the getter function.

validator <Function | String>

The validator function invoked prior to setting the stored value. Returning false from the validator function will prevent the value from being stored.

validator can also be set to a string, representing the name of the instance method to be used as the validator function.

lazyAdd <boolean>

Whether or not to delay initialization of the attribute until the first call to get/set it. This flag can be used to over-ride lazy initialization on a per attribute basis, when adding multiple attributes through the addAttrs method.

The setter, getter and validator are invoked with the value and name passed in as the first and second arguments, and with the context ("this") set to the host object.

Configuration properties outside of the list mentioned above are considered private properties used internally by attribute, and are not intended for public use.

Parameters:

name String

The name of the attribute.
config Object

An object with attribute configuration property/value pairs, specifying the configuration for the attribute.

NOTE: The configuration object is modified when adding an attribute, so if you need to protect the original values, you will need to merge the object.
lazy Boolean

(optional) Whether or not to add this attribute lazily (on the first call to get/set).

Returns:

Object: A reference to the host object.

`addAttrs`

(

cfgs
values
lazy

)

Object chainable

Inherited from AttributeCore: attribute/js/AttributeCore.js:737

Configures a group of attributes, and sets initial values.

NOTE: This method does not isolate the configuration object by merging/cloning. The caller is responsible for merging/cloning the configuration object if required.

Parameters:

cfgs Object

An object with attribute name/configuration pairs.
values Object

An object with attribute name/value pairs, defining the initial values to apply. Values defined in the cfgs argument will be over-written by values in this argument unless defined as read only.
lazy Boolean

Whether or not to delay the intialization of these attributes until the first call to get/set. Individual attributes can over-ride this behavior by defining a lazyAdd configuration property in their configuration. See addAttr.

Returns:

Object: A reference to the host object.

`addTarget`

(

)

Inherited from EventTarget: event-custom/js/event-facade.js:387

Registers another EventTarget as a bubble target. Bubble order is determined by the order registered. Multiple targets can be specified.

Events can only bubble if emitFacade is true.

Included in the event-custom-complex submodule.

Parameters:

o EventTarget

the target to add

`after`

(

type
fn
[context]
[arg*]

)

EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:744

Subscribe to a custom event hosted by this object. The supplied callback will execute after any listeners add via the subscribe method, and after the default function, if configured for the event, has executed.

Parameters:

type String

The name of the event
fn Function

The callback to execute in response to the event
[context] Object optional

Override this object in callback
[arg*] Any optional

0..n additional arguments to supply to the subscriber

Returns:

EventHandle: A subscription handle capable of detaching the subscription

`attachEvents`

(

[events]

)

chainable

Inherited from View: app/js/view.js:181

Attaches delegated event handlers to this view's container element. This method is called internally to subscribe to events configured in the events attribute when the view is initialized.

You may override this method to customize the event attaching logic.

Parameters:

[events] Object optional

Hash of events to attach. See the docs for the events attribute for details on the format. If not specified, this view's events property will be used.

`attrAdded`

(

name

)

Boolean

Inherited from AttributeCore: attribute/js/AttributeCore.js:300

Checks if the given attribute has been added to the host

Parameters:

name String

The name of the attribute to check.

Returns:

Boolean: true if an attribute with the given name has been added, false if it hasn't. This method will return true for lazily added attributes.

`before`

()

Inherited from EventTarget: event-custom/js/event-target.js:781

Executes the callback before a DOM event, custom event or method. If the first argument is a function, it is assumed the target is a method. For DOM and custom events, this is an alias for Y.on.

For DOM and custom events: type, callback, context, 0-n arguments

For methods: callback, object (method host), methodName, context, 0-n arguments

Returns:

detach handle

`bubble`

(

evt

)

Boolean

Inherited from EventTarget: event-custom/js/event-facade.js:424

Propagate an event. Requires the event-custom-complex module.

Parameters:

evt CustomEvent

the custom event to propagate

Returns:

Boolean: the aggregated return value from Event.Custom.fire

`create`

(

[container]

)

Node

Inherited from View: app/js/view.js:233

Creates and returns a container node for this view.

By default, the container is created from the HTML template specified in the containerTemplate property, and is not added to the DOM automatically.

You may override this method to customize how the container node is created (such as by rendering it from a custom template format). Your method must return a Y.Node instance.

Parameters:

[container] HTMLElement | Node | String optional

Selector string, Y.Node instance, or DOM element to use at the container node.

Returns:

Node: Node instance of the created container node.

`createView`

(

name
[config]

)

View

Defined in app/js/app-base.js:185

Available since 3.5.0

Creates and returns a new view instance using the provided name to look up the view info metadata defined in the views object. The passed-in config object is passed to the view constructor function.

This function also maps a view instance back to its view info metadata.

Parameters:

name String

The name of a view defined on the views object.
[config] Object optional

The configuration object passed to the view constructor function when creating the new view instance.

Returns:

View: The new view instance.

`destroy`

(

[options]

)

chainable

Inherited from BaseObservable but overwritten in app/js/view.js:146

Destroys this View, detaching any DOM events and optionally also destroying its container node.

By default, the container node will not be destroyed. Pass an options object with a truthy remove property to destroy the container as well.

Parameters:

[options] Object optional

Options.
- [remove=false] Boolean optional
  
  If true, this View's container will be removed from the DOM and destroyed as well.

`detach`

(

type
fn
context

)

EventTarget

Inherited from EventTarget: event-custom/js/event-target.js:344

Detach one or more listeners the from the specified event

Parameters:

type String | Object

Either the handle to the subscriber or the type of event. If the type is not specified, it will attempt to remove the listener from all hosted events.
fn Function

The subscribed function to unsubscribe, if not supplied, all subscribers will be removed.
context Object

The custom object passed to subscribe. This is optional, but if supplied will be used to disambiguate multiple listeners that are the same (e.g., you subscribe many object using a function that lives on the prototype)

Returns:

EventTarget: the host

`detachAll`

(

type

)

Inherited from EventTarget: event-custom/js/event-target.js:464

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

Parameters:

type String

The type, or name of the event

`detachEvents`

() chainable

Inherited from View: app/js/view.js:253

Detaches DOM events that have previously been attached to the container by attachEvents().

`dispatch`

() chainable

Inherited from Router: app/js/router.js:206

Dispatches to the first route handler that matches the current URL, if any.

If dispatch() is called before the ready event has fired, it will automatically wait for the ready event before dispatching. Otherwise it will dispatch immediately.

`fire`

(

type
arguments

)

EventTarget

Inherited from EventTarget: event-custom/js/event-target.js:641

Fire a custom event by name. The callback functions will be executed from the context specified when the event was created, and with the following parameters.

If the custom event object hasn't been created, then the event hasn't been published and it has no subscribers. For performance sake, we immediate exit in this case. This means the event won't bubble, so if the intention is that a bubble target be notified, the event must be published on this object first.

The first argument is the event type, and any additional arguments are passed to the listeners as parameters. If the first of these is an object literal, and the event is configured to emit an event facade, that object is mixed into the event facade and the facade is provided in place of the original object.

Parameters:

type String | Object

The type of the event, or an object that contains a 'type' property.
arguments Object*

an arbitrary set of parameters to pass to the handler. If the first of these is an object literal and the event is configured to emit an event facade, the event facade will replace that parameter after the properties the object literal contains are copied to the event facade.

Returns:

EventTarget: the event host

`get`

(

name

)

Any

Inherited from AttributeCore: attribute/js/AttributeCore.js:311

Returns the current value of the attribute. If the attribute has been configured with a 'getter' function, this method will delegate to the 'getter' to obtain the value of the attribute.

Parameters:

name String

The name of the attribute. If the value of the attribute is an Object, dot notation can be used to obtain the value of a property of the object (e.g. get("x.y.z"))

Returns:

Any: The value of the attribute

`getAttrs`

(

attrs

)

Object

Inherited from AttributeCore: attribute/js/AttributeCore.js:694

Gets multiple attribute values.

Parameters:

attrs Array | boolean

Optional. An array of attribute names. If omitted, all attribute values are returned. If set to true, all attributes modified from their initial values are returned.

Returns:

Object: An object with attribute name/value pairs.

`getEvent`

(

type
prefixed

)

CustomEvent

Inherited from EventTarget: event-custom/js/event-target.js:726

Returns the custom event of the provided type has been created, a falsy value otherwise

Parameters:

type String

the type, or name of the event
prefixed String

if true, the type is prefixed already

Returns:

CustomEvent: the custom event or null

`getPath`

() String

Inherited from Router: app/js/router.js:230

Gets the current route path, relative to the root (if any).

Returns:

String: Current route path.

`getTargets`

()

Inherited from EventTarget: event-custom/js/event-facade.js:405

Returns an array of bubble targets for this object.

Returns:

EventTarget[]

`getViewInfo`

(

view

)

Object

Defined in app/js/app-base.js:215

Available since 3.5.0

Returns the metadata associated with a view instance or view name defined on the views object.

Parameters:

view View | String

View instance, or name of a view defined on the views object.

Returns:

Object: The metadata for the view, or undefined if the view is not registered.

`hasRoute`

(

url

)

Boolean

Inherited from Router: app/js/router.js:240

Returns true if this router has at least one route that matches the specified URL, false otherwise.

This method enforces the same-origin security constraint on the specified url; any URL which is not from the same origin as the current URL will always return false.

Parameters:

url String

URL to match.

Returns:

Boolean: true if there's at least one matching route, false otherwise.

`init`

(

cfg

)

BaseCore chainable

Inherited from BaseObservable but overwritten in base/js/BaseCore.js:219

Init lifecycle method, invoked during construction. Sets up attributes and invokes initializers for the class hierarchy.

Parameters:

cfg Object

Object with configuration property name/value pairs

Returns:

BaseCore: A reference to this object

`match`

(

path

)

Object[]

Inherited from Router: app/js/router.js:269

Returns an array of route objects that match the specified URL path.

This method is called internally to determine which routes match the current path whenever the URL changes. You may override it if you want to customize the route matching logic, although this usually shouldn't be necessary.

Each returned route object has the following properties:

callback: A function or a string representing the name of a function this router that should be executed when the route is triggered.
keys: An array of strings representing the named parameters defined in the route's path specification, if any.
path: The route's path specification, which may be either a string or a regex.
regex: A regular expression version of the route's path specification. This regex is used to determine whether the route matches a given path.

Parameters:

path String

URL path to match.

Returns:

Object[]: Array of route objects that match the specified path.

Example:

router.route('/foo', function () {});
router.match('/foo');
// => [{callback: ..., keys: [], path: '/foo', regex: ...}]

`modifyAttr`

(

name
config

)

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:40

Updates the configuration of an attribute which has already been added.

The properties which can be modified through this interface are limited to the following subset of attributes, which can be safely modified after a value has already been set on the attribute: readOnly, writeOnce, broadcast and getter.

Parameters:

name String

The name of the attribute whose configuration is to be updated.
config Object

An object with configuration property/value pairs, specifying the configuration properties to modify.

`navigate`

(

url
[options]

)

Inherited from PjaxBase but overwritten in app/js/app-base.js:234

Navigates to the specified URL if there is a route handler that matches. In browsers capable of using HTML5 history or when serverRouting is falsy, the navigation will be enhanced by firing the navigate event and having the app handle the "request". When serverRouting is true, non-HTML5 browsers will navigate to the new URL via a full page reload.

When there is a route handler for the specified URL and it is being navigated to, this method will return true, otherwise it will return false.

Note: The specified URL must be of the same origin as the current URL, otherwise an error will be logged and navigation will not occur. This is intended as both a security constraint and a purposely imposed limitation as it does not make sense to tell the app to navigate to a URL on a different scheme, host, or port.

Parameters:

url String

The URL to navigate to. This must be of the same origin as the current URL.
[options] Object optional

Additional options to configure the navigation. These are mixed into the navigate event facade.
- [replace] Boolean optional
  
  Whether or not the current history entry will be replaced, or a new entry will be created. Will default to true if the specified url is the same as the current URL.
- [force] Boolean optional
  
  Whether the enhanced navigation should occur even in browsers without HTML5 history. Will default to true when serverRouting is falsy.

`on`

(

type
fn
[context]
[arg*]

)

EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:191

Subscribe a callback function to a custom event fired by this object or from an object that bubbles its events to this object.

Callback functions for events published with emitFacade = true will receive an EventFacade as the first argument (typically named "e"). These callbacks can then call e.preventDefault() to disable the behavior published to that event's defaultFn. See the EventFacade API for all available properties and methods. Subscribers to non-emitFacade events will receive the arguments passed to fire() after the event name.

To subscribe to multiple events at once, pass an object as the first argument, where the key:value pairs correspond to the eventName:callback, or pass an array of event names as the first argument to subscribe to all listed events with the same callback.

Returning false from a callback is supported as an alternative to calling e.preventDefault(); e.stopPropagation();. However, it is recommended to use the event methods whenever possible.

Parameters:

type String

The name of the event
fn Function

The callback to execute in response to the event
[context] Object optional

Override this object in callback
[arg*] Any optional

0..n additional arguments to supply to the subscriber

Returns:

EventHandle: A subscription handle capable of detaching that subscription

`once`

(

type
fn
[context]
[arg*]

)

EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:127

Listen to a custom event hosted by this object one time. This is the equivalent to on except the listener is immediatelly detached when it is executed.

Parameters:

type String

The name of the event
fn Function

The callback to execute in response to the event
[context] Object optional

Override this object in callback
[arg*] Any optional

0..n additional arguments to supply to the subscriber

Returns:

EventHandle: A subscription handle capable of detaching the subscription

`onceAfter`

(

type
fn
[context]
[arg*]

)

EventHandle

Inherited from EventTarget: event-custom/js/event-target.js:149

Listen to a custom event hosted by this object one time. This is the equivalent to after except the listener is immediatelly detached when it is executed.

Parameters:

type String

The name of the event
fn Function

The callback to execute in response to the event
[context] Object optional

Override this object in callback
[arg*] Any optional

0..n additional arguments to supply to the subscriber

Returns:

EventHandle: A subscription handle capable of detaching that subscription

`parseType`

(

type
[pre=this._yuievt.config.prefix]

)

Array

Inherited from EventTarget: event-custom/js/event-target.js:171

Available since 3.3.0

Takes the type parameter passed to 'on' and parses out the various pieces that could be included in the type. If the event type is passed without a prefix, it will be expanded to include the prefix one is supplied or the event target is configured with a default prefix.

Parameters:

type String

the type
[pre=this._yuievt.config.prefix] String optional

the prefix

Returns:

Array: an array containing: * the detach category, if supplied, * the prefixed event type, * whether or not this is an after listener, * the supplied event type

`publish`

(

type
opts

)

CustomEvent

Inherited from EventTarget: event-custom/js/event-target.js:488

Creates a new custom event of the specified type. If a custom event by that name already exists, it will not be re-created. In either case the custom event is returned.

Parameters:

type String

the type, or name of the event
opts Object
optional config params. Valid properties are:
- 'broadcast': whether or not the YUI instance and YUI global are notified when the event is fired (false)
- 'bubbles': whether or not this event bubbles (true) Events can only bubble if emitFacade is true.
- 'context': the default execution context for the listeners (this)
- 'defaultFn': the default function to execute when this event fires if preventDefault was not called
- 'emitFacade': whether or not this event emits a facade (false)
- 'prefix': the prefix for this targets events, e.g., 'menu' in 'menu:click'
- 'fireOnce': if an event is configured to fire once, new subscribers after the fire will be notified immediately.
- 'async': fireOnce event listeners will fire synchronously if the event has already fired unless async is true.
- 'preventable': whether or not preventDefault() has an effect (true)
- 'preventedFn': a function that is executed when preventDefault is called
- 'queuable': whether or not this event can be queued during bubbling (false)
- 'silent': if silent is true, debug messages are not provided for this event.
- 'stoppedFn': a function that is executed when stopPropagation is called
- 'monitored': specifies whether or not this event should send notifications about when the event has been attached, detached, or published.
- 'type': the event type (valid option if not provided as the first parameter to publish)

Returns:

CustomEvent: the custom event

`remove`

() chainable

Inherited from View: app/js/view.js:272

Removes this view's container element from the DOM (if it's in the DOM), but doesn't destroy it or any event listeners attached to it.

`removeAttr`

(

name

)

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:78

Removes an attribute from the host object

Parameters:

name String

The name of the attribute to be removed.

`removeQuery`

(

url

)

String

Inherited from Router: app/js/router.js:327

Removes a query string from the end of the url (if one exists) and returns the result.

Parameters:

url String

URL.

Returns:

String: Queryless path.

`removeRoot`

(

url

)

String

Inherited from Router: app/js/router.js:305

Removes the root URL from the front of url (if it's there) and returns the result. The returned path will always have a leading /.

Parameters:

url String

URL.

Returns:

String: Rootless path.

`removeTarget`

(

)

Inherited from EventTarget: event-custom/js/event-facade.js:414

Removes a bubble target

Parameters:

o EventTarget

the target to remove

`render`

() chainable

Inherited from View but overwritten in app/js/app-base.js:266

Renders this application by appending the viewContainer node to the container node if it isn't already a child of the container, and the activeView will be appended the view container, if it isn't already.

You should call this method at least once, usually after the initialization of your app instance so the proper DOM structure is setup and optionally append the container to the DOM if it's not there already.

You may override this method to customize the app's rendering, but you should expect that the viewContainer's contents will be modified by the app for the purpose of rendering the activeView when it changes.

`replace`

(

[url]

)

chainable

Inherited from Router: app/js/router.js:339

Replaces the current browser history entry with a new one, and dispatches to the first matching route handler, if any.

Behind the scenes, this method uses HTML5 pushState() in browsers that support it (or the location hash in older browsers and IE) to change the URL.

The specified URL must share the same origin (i.e., protocol, host, and port) as the current page, or an error will occur.

Parameters:

[url] String optional

URL to set. This URL needs to be of the same origin as the current URL. This can be a URL relative to the router's root attribute. If no URL is specified, the page's current URL will be used.

Example:

// Starting URL: http://example.com/

router.replace('/path/');
// New URL: http://example.com/path/

router.replace('/path?foo=bar');
// New URL: http://example.com/path?foo=bar

router.replace('/');
// New URL: http://example.com/

`reset`

(

name

)

Object chainable

Inherited from AttributeExtras: attribute/js/AttributeExtras.js:88

Resets the attribute (or all attributes) to its initial value, as long as the attribute is not readOnly, or writeOnce.

Parameters:

name String

Optional. The name of the attribute to reset. If omitted, all attributes are reset.

Returns:

Object: A reference to the host object.

`route`

(

path
callbacks

)

chainable

Inherited from Router: app/js/router.js:373

Adds a route handler for the specified URL path.

The path parameter may be either a string or a regular expression. If it's a string, it may contain named parameters: :param will match any single part of a URL path (not including / characters), and *param will match any number of parts of a URL path (including / characters). These named parameters will be made available as keys on the req.params object that's passed to route handlers.

If the path parameter is a regex, all pattern matches will be made available as numbered keys on req.params, starting with 0 for the full match, then 1 for the first subpattern match, and so on.

Here's a set of sample routes along with URL paths that they match:

Route: /photos/:tag/:page
- URL: /photos/kittens/1, params: {tag: 'kittens', page: '1'}
- URL: /photos/puppies/2, params: {tag: 'puppies', page: '2'}
Route: /file/*path
- URL: /file/foo/bar/baz.txt, params: {path: 'foo/bar/baz.txt'}
- URL: /file/foo, params: {path: 'foo'}

Middleware: Routes also support an arbitrary number of callback functions. This allows you to easily reuse parts of your route-handling code with different route. This method is liberal in how it processes the specified callbacks, you can specify them as separate arguments, or as arrays, or both.

If multiple route match a given URL, they will be executed in the order they were added. The first route that was added will be the first to be executed.

Passing Control: Invoking the next() function within a route callback will pass control to the next callback function (if any) or route handler (if any). If a value is passed to next(), it's assumed to be an error, therefore stopping the dispatch chain, unless that value is: "route", which is special case and dispatching will skip to the next route handler. This allows middleware to skip any remaining middleware for a particular route.

Parameters:

path String | RegExp

Path to match. May be a string or a regular expression.
callbacks Array | Function | String multiple

Callback functions to call whenever this route is triggered. These can be specified as separate arguments, or in arrays, or both. If a callback is specified as a string, the named function will be called on this router instance.
- req Object
  
  Request object containing information about the request. It contains the following properties.
  - params Array | Object
    Captured parameters matched by the route path specification. If a string path was used and contained named parameters, then this will be a key/value hash mapping parameter names to their matched values. If a regex path was used, this will be an array of subpattern matches starting at index 0 for the full match, then 1 for the first subpattern match, and so on.
  - path String
    The current URL path.
  - pendingCallbacks Number
    Number of remaining callbacks the route handler has after this one in the dispatch chain.
  - pendingRoutes Number
    Number of matching routes after this one in the dispatch chain.
  - query Object
    Query hash representing the URL query string, if any. Parameter names are keys, and are mapped to parameter values.
  - url String
    The full URL.
  - src String
    What initiated the dispatch. In an HTML5 browser, when the back/forward buttons are used, this property will have a value of "popstate".
- res Object
  
  Response object containing methods and information that relate to responding to a request. It contains the following properties.
  - req Object
    Reference to the request object.
- next Function
  
  Function to pass control to the next callback or the next matching route if no more callbacks (middleware) exist for the current route handler. If you don't call this function, then no further callbacks or route handlers will be executed, even if there are more that match. If you do call this function, then the next callback (if any) or matching route handler (if any) will be called. All of these functions will receive the same req and res objects that were passed to this route (so you can use these objects to pass data along to subsequent callbacks and routes).
  - [err] String optional
    Optional error which will stop the dispatch chaining for this req, unless the value is "route", which is special cased to jump skip past any callbacks for the current route and pass control the next route handler.

Example:

router.route('/photos/:tag/:page', function (req, res, next) {
  Y.log('Current tag: ' + req.params.tag);
  Y.log('Current page number: ' + req.params.page);
});

// Using middleware.

router.findUser = function (req, res, next) {
    req.user = this.get('users').findById(req.params.user);
    next();
};

router.route('/users/:user', 'findUser', function (req, res, next) {
    // The findUser middleware puts the user object on the req.
    Y.log('Current user:' req.user.get('name'));
});

`save`

(

[url]

)

chainable

Inherited from Router: app/js/router.js:500

Saves a new browser history entry and dispatches to the first matching route handler, if any.

Behind the scenes, this method uses HTML5 pushState() in browsers that support it (or the location hash in older browsers and IE) to change the URL and create a history entry.

The specified URL must share the same origin (i.e., protocol, host, and port) as the current page, or an error will occur.

Parameters:

[url] String optional

URL to set. This URL needs to be of the same origin as the current URL. This can be a URL relative to the router's root attribute. If no URL is specified, the page's current URL will be used.

Example:

// Starting URL: http://example.com/

router.save('/path/');
// New URL: http://example.com/path/

router.save('/path?foo=bar');
// New URL: http://example.com/path?foo=bar

router.save('/');
// New URL: http://example.com/

`set`

(

name
value

)

Object chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:356

Sets the value of an attribute.

Parameters:

name String

The name of the attribute. If the current value of the attribute is an Object, dot notation can be used to set the value of a property within the object (e.g. set("x.y.z", 5)).
value Any

The value to set the attribute to.

Returns:

Object: A reference to the host object.

`setAttrs`

(

attrs

)

Object chainable

Inherited from AttributeObservable but overwritten in attribute/js/AttributeCore.js:663

Sets multiple attribute values.

Parameters:

attrs Object

An object with attributes name/value pairs.

Returns:

Object: A reference to the host object.

`showView`

(

view
[config]
[options]
[callback]

)

chainable

Defined in app/js/app-base.js:307

Available since 3.5.0

Sets which view is active/visible for the application. This will set the app's activeView attribute to the specified view.

The view will be "attached" to this app, meaning it will be both rendered into this app's viewContainer node and all of its events will bubble to the app. The previous activeView will be "detached" from this app.

When a string-name is provided for a view which has been registered on this app's views object, the referenced metadata will be used and the activeView will be set to either a preserved view instance, or a new instance of the registered view will be created using the specified config object passed-into this method.

A callback function can be specified as either the third or fourth argument, and this function will be called after the new view becomes the activeView, is rendered to the viewContainer, and is ready to use.

Parameters:

view String | View

The name of a view defined in the views object, or a view instance which should become this app's activeView.
[config] Object optional

Optional configuration to use when creating a new view instance. This config object can also be used to update an existing or preserved view's attributes when options.update is true.
[options] Object optional

Optional object containing any of the following properties:
- [callback] Function optional
  
  Optional callback function to call after new activeView is ready to use, the function will be passed:
  - view View
    A reference to the new activeView.
- [prepend=false] Boolean optional
  
  Whether the view should be prepended instead of appended to the viewContainer.
- [render] Boolean optional
  
  Whether the view should be rendered. Note: If no value is specified, a view instance will only be rendered if it's newly created by this method.
- [update=false] Boolean optional
  
  Whether an existing view should have its attributes updated by passing the config object to its setAttrs() method. Note: This option does not have an effect if the view instance is created as a result of calling this method.
[callback] Function optional

Optional callback Function to call after the new activeView is ready to use. Note: this will override options.callback and it can be specified as either the third or fourth argument. The function will be passed the following:
- view View
  
  A reference to the new activeView.

Example:

var app = new Y.App({
    views: {
        usersView: {
            // Imagine that Y.UsersView has been defined.
            type: Y.UsersView
        }
    },

    users: new Y.ModelList()
});

app.route('/users/', function () {
    this.showView('usersView', {users: this.get('users')});
});

app.render();
app.navigate('/uses/'); // => Creates a new Y.UsersView and shows it.

`subscribe`

() deprecated

Inherited from EventTarget: event-custom/js/event-target.js:334

Deprecated: use on

subscribe to an event

`toString`

() String

Inherited from BaseCore: base/js/BaseCore.js:620

Default toString implementation. Provides the constructor NAME and the instance guid, if set.

Returns:

String: String representation for this object

`unsubscribe`

() deprecated

Inherited from EventTarget: event-custom/js/event-target.js:454

Deprecated: use detach

detach a listener

`unsubscribeAll`

(

type

)

deprecated

Inherited from EventTarget: event-custom/js/event-target.js:475

Deprecated: use detachAll

Removes all listeners from the specified event. If the event type is not specified, all listeners from all hosted custom events will be removed.

Parameters:

type String

The type, or name of the event

`upgrade`

() Boolean

Inherited from Router: app/js/router.js:534

Upgrades a hash-based URL to an HTML5 URL if necessary. In non-HTML5 browsers, this method is a noop.

Returns:

Boolean: true if the URL was upgraded, false otherwise.

Properties

`_allowAdHocAttrs`

Boolean protected

Inherited from BaseCore but overwritten in app/js/view.js:111

Available since 3.5.0

This tells Y.Base that it should create ad-hoc attributes for config properties passed to View's constructor. This makes it possible to instantiate a view and set a bunch of attributes without having to subclass Y.View and declare all those attributes first.

Default: true

`_dispatched`

Boolean protected

Inherited from Router: app/js/router.js:64

Whether or not _dispatch() has been called since this router was instantiated.

Default: undefined

`_dispatching`

Boolean protected

Inherited from Router: app/js/router.js:74

Whether or not we're currently in the process of dispatching to routes.

Default: undefined

`_historyEvents`

EventHandle protected

Inherited from Router: app/js/router.js:83

History event handle for the history:change or hashchange event subscription.

`_html5`

Boolean protected

Inherited from Router: app/js/router.js:92

Cached copy of the html5 attribute for internal use.

`_NON_ATTRS_CFG`

Array protected static

Defined in app/js/app-base.js:1020

Available since 3.5.0

Properties that shouldn't be turned into ad-hoc attributes when passed to App's constructor.

`_pjaxEvents`

EventHandle protected

Inherited from PjaxBase: pjax/js/pjax-base.js:69

Available since 3.5.0

Holds the delegated pjax-link click handler.

`_ready`

Boolean protected

Inherited from Router: app/js/router.js:100

Whether or not the ready event has fired yet.

Default: undefined

`_regexPathParam`

RegExp protected

Inherited from Router: app/js/router.js:109

Regex used to match parameter placeholders in route paths.

Subpattern captures:

Parameter prefix character. Either a : for subpath parameters that should only match a single level of a path, or * for splat parameters that should match any number of path levels.
Parameter name, if specified, otherwise it is a wildcard match.

`_regexURL`

RegExp protected

Inherited from PjaxBase: pjax/js/pjax-base.js:78

Available since 3.5.0

Regex used to break up a URL string around the URL's path.

Subpattern captures:

Origin, everything before the URL's path-part.
The URL's path-part.
Suffix, everything after the URL's path-part.

`_regexUrlOrigin`

RegExp protected

Inherited from Router: app/js/router.js:136

Regex that matches everything before the path portion of a URL (the origin). This will be used to strip this part of the URL from a string when we only want the path.

`_regexUrlQuery`

RegExp protected

Inherited from Router: app/js/router.js:126

Regex that matches and captures the query portion of a URL, minus the preceding ? character, and discarding the hash portion of the URL if any.

`_viewInfoMap`

Object protected

Defined in app/js/app-base.js:134

Available since 3.5.0

Map of view instance id (via Y.stamp()) to view-info object in views.

This mapping is used to tie a specific view instance back to its metadata by adding a reference to the the related view info on the views object.

Default: {}

`containerTemplate`

String

Inherited from View: app/js/view.js:40

Available since 3.5.0

Template for this view's container.

Default: "<div/>"

`events`

Object

Inherited from View: app/js/view.js:50

Hash of CSS selectors mapped to events to delegate to elements matching those selectors.

CSS selectors are relative to the container element. Events are attached to the container, and delegation is used so that subscribers are only notified of events that occur on elements inside the container that match the specified selectors. This allows the container's contents to be re- rendered as needed without losing event subscriptions.

Event handlers can be specified either as functions or as strings that map to function names on this view instance or its prototype.

The this object in event handlers will refer to this view instance. If you'd prefer this to be something else, use Y.bind() to bind a custom this object.

Default: {}

Example:

var view = new Y.View({
    events: {
        // Call this.toggle() whenever the element with the id
        // "toggle-button" is clicked.
        '#toggle-button': {click: 'toggle'},

        // Call this.hoverOn() when the mouse moves over any element
        // with the "hoverable" class, and this.hoverOff() when the
        // mouse moves out of any element with the "hoverable" class.
        '.hoverable': {
            mouseover: 'hoverOn',
            mouseout : 'hoverOff'
        }
    }
});

`name`

String deprecated

Inherited from BaseCore: base/js/BaseCore.js:197

Deprecated: Use this.constructor.NAME

The string used to identify the class of this object.

`template`

Mixed

Inherited from View: app/js/view.js:91

Template for this view's contents.

This is a convenience property that has no default behavior of its own. It's only provided as a convention to allow you to store whatever you consider to be a template, whether that's an HTML string, a Y.Node instance, a Mustache template, or anything else your little heart desires.

How this template gets used is entirely up to you and your custom render() method.

Default: ''

`views`

Object

Defined in app/js/app-base.js:76

Available since 3.5.0

Hash of view-name to metadata used to declaratively describe an application's views and their relationship with the app and its other views.

The view metadata is composed of Objects keyed to a view-name that can have any or all of the following properties:

type: Function or a string representing the view constructor to use to create view instances. If a string is used, the constructor function is assumed to be on the Y object; e.g. "SomeView" -> Y.SomeView.
preserve: Boolean for whether the view instance should be retained. By default, the view instance will be destroyed when it is no longer the activeView. If true the view instance will simply be removed() from the DOM when it is no longer active. This is useful when the view is frequently used and may be expensive to re-create.
parent: String to another named view in this hash that represents the parent view within the application's view hierarchy; e.g. a "photo" view could have "album" has its parent view. This parent/child relationship is a useful cue for things like transitions.
instance: Used internally to manage the current instance of this named view. This can be used if your view instance is created up-front, or if you would rather manage the View lifecycle, but you probably should just let this be handled for you.

If views are specified at instantiation time, the metadata in the views Object here will be used as defaults when creating the instance's views.

Every Y.App instance gets its own copy of a views object so this Object on the prototype will not be polluted.

Default: {}

Example:

// Imagine that Y.UsersView and Y.UserView have been defined.
var app = new Y.App({
    views: {
        users: {
            type    : Y.UsersView,
            preserve: true
        },

        user: {
            type  : Y.UserView,
            parent: 'users'
        }
    }
});

Attributes

`activeView`

View readonly

Defined in app/js/app-base.js:819

Available since 3.5.0

The application's active/visible view.

This attribute is read-only, to set the activeView use the showView() method.

Default: null

Fires event `activeViewChange`

Fires when the value for the configuration attribute activeView is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`container`

HTMLElement | Node | String

Inherited from View but overwritten in app/js/app-base.js:837

Container node which represents the application's bounding-box, into which this app's content will be rendered.

The container node serves as the host for all DOM events attached by the app. Delegation is used to handle events on children of the container, allowing the container's contents to be re-rendered at any time without losing event subscriptions.

The default container is the <body> Node, but you can override this in a subclass, or by passing in a custom container config value at instantiation time.

When container is overridden by a subclass or passed as a config option at instantiation time, it may be provided as a selector string, a DOM element, or a Y.Node instance. During initialization, this app's create() method will be called to convert the container into a Y.Node instance if it isn't one already and stamp it with the CSS class: "yui3-app".

The container is not added to the page automatically. This allows you to have full control over how and when your app is actually rendered to the page.

Default: Y.one('body')

Fires event `containerChange`

Fires when the value for the configuration attribute container is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`destroyed`

Boolean readonly

Inherited from BaseCore: base/js/BaseCore.js:157

Flag indicating whether or not this object has been through the destroy lifecycle phase.

Default: false

Fires event `destroyedChange`

Fires when the value for the configuration attribute destroyed is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`html5`

Boolean

Inherited from Router but overwritten in app/js/app-base.js:872

Whether or not this browser is capable of using HTML5 history.

This value is dependent on the value of serverRouting and will default accordingly.

Setting this to false will force the use of hash-based history even on HTML5 browsers, but please don't do this unless you understand the consequences.

Fires event `html5Change`

Fires when the value for the configuration attribute html5 is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`initialized`

Boolean readonly

Inherited from BaseCore: base/js/BaseCore.js:143

Flag indicating whether or not this object has been through the init lifecycle phase.

Default: false

Fires event `initializedChange`

Fires when the value for the configuration attribute initialized is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`linkSelector`

String | Function

Inherited from PjaxBase but overwritten in app/js/app-base.js:891

CSS selector string used to filter link click events so that only the links which match it will have the enhanced-navigation behavior of pjax applied.

When a link is clicked and that link matches this selector, navigating to the link's href URL using the enhanced, pjax, behavior will be attempted; and the browser's default way to navigate to new pages will be the fallback.

By default this selector will match all links on the page.

Default: "a"

Fires event `linkSelectorChange`

Fires when the value for the configuration attribute linkSelector is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`navigateOnHash`

Boolean

Inherited from PjaxBase: pjax/js/pjax-base.js:401

Available since 3.5.0

Whether navigating to a hash-fragment identifier on the current page should be enhanced and cause the navigate event to fire.

By default Pjax allows the browser to perform its default action when a user is navigating within a page by clicking in-page links (e.g. <a href="#top">Top of page</a>) and does not attempt to interfere or enhance in-page navigation.

Default: false

Fires event `navigateOnHashChange`

Fires when the value for the configuration attribute navigateOnHash is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`root`

String

Inherited from Router: app/js/router.js:1326

Absolute root path from which all routes should be evaluated.

For example, if your router is running on a page at http://example.com/myapp/ and you add a route with the path /, your route will never execute, because the path will always be preceded by /myapp. Setting root to /myapp would cause all routes to be evaluated relative to that root URL, so the / route would then execute when the user browses to http://example.com/myapp/.

Default: `''`

Fires event `rootChange`

Fires when the value for the configuration attribute root is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`routes`

Object[]

Inherited from Router: app/js/router.js:1344

Array of route objects.

Each item in the array must be an object with the following properties:

path: String or regex representing the path to match. See the docs for the route() method for more details.
callbacks: Function or a string representing the name of a function on this router instance that should be called when the route is triggered. An array of functions and/or strings may also be provided. See the docs for the route() method for more details.

This attribute is intended to be used to set routes at init time, or to completely reset all routes after init. To add routes after init without resetting all existing routes, use the route() method.

Default: `[]`

Fires event `routesChange`

Fires when the value for the configuration attribute routes is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`scrollToTop`

Boolean

Inherited from PjaxBase: pjax/js/pjax-base.js:419

Available since 3.5.0

Whether the page should be scrolled to the top after navigating to a URL.

When the user clicks the browser's back button, the previous scroll position will be maintained.

Default: true

Fires event `scrollToTopChange`

Fires when the value for the configuration attribute scrollToTop is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`serverRouting`

Boolean

Defined in app/js/app-base.js:911

Available since 3.5.0

Whether or not this application's server is capable of properly routing all requests and rendering the initial state in the HTML responses.

This can have three different values, each having particular implications on how the app will handle routing and navigation:

undefined: The best form of URLs will be chosen based on the capabilities of the browser. Given no information about the server environmentm a balanced approach to routing and navigation is chosen.

The server should be capable of handling full-path requests, since full-URLs will be generated by browsers using HTML5 history. If this is a client-side-only app the server could handle full-URL requests by sending a redirect back to the root with a hash-based URL, e.g:
```
Request:     http://example.com/users/1
Redirect to: http://example.com/#/users/1
```
true: The server is fully capable of properly handling requests to all full-path URLs the app can produce.

This is the best option for progressive-enhancement because it will cause all URLs to always have full-paths, which means the server will be able to accurately handle all URLs this app produces. e.g.
```
http://example.com/users/1
```
To meet this strict full-URL requirement, browsers which are not capable of using HTML5 history will make requests to the server resulting in full-page reloads.
false: The server is not capable of properly handling requests to all full-path URLs the app can produce, therefore all routing will be handled by this App instance.

Be aware that this will cause all URLs to always be hash-based, even in browsers that are capable of using HTML5 history. e.g.
```
http://example.com/#/users/1
```
A single-page or client-side-only app where the server sends a "shell" page with JavaScript to the client might have this restriction. If you're setting this to false, read the following:

Note: When this is set to false, the server will never receive the full URL because browsers do not send the fragment-part to the server, that is everything after and including the "#".

Consider the following example:

URL shown in browser: http://example.com/#/users/1
URL sent to server:   http://example.com/

You should feel bad about hurting our precious web if you forcefully set either serverRouting or html5 to false, because you're basically punching the web in the face here with your lossy URLs! Please make sure you know what you're doing and that you understand the implications.

Ideally you should always prefer full-path URLs (not /#/foo/), and want full-page reloads when the client's browser is not capable of enhancing the experience using the HTML5 history APIs. Setting this to true is the best option for progressive-enhancement (and graceful-degradation).

Default: undefined

Fires event `serverRoutingChange`

Fires when the value for the configuration attribute serverRouting is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

`viewContainer`

HTMLElement | Node | String

Defined in app/js/app-base.js:987

Available since 3.5.0

The node into which this app's views will be rendered when they become the activeView.

The view container node serves as the container to hold the app's activeView. Each time the activeView is set via showView(), the previous view will be removed from this node, and the new active view's container node will be appended.

The default view container is a <div> Node, but you can override this in a subclass, or by passing in a custom viewContainer config value at instantiation time. The viewContainer may be provided as a selector string, DOM element, or a Y.Node instance (having the viewContainer and the container be the same node is also supported).

The app's render() method will stamp the view container with the CSS class "yui3-app-views" and append it to the app's container node if it isn't already, and any activeView will be appended to this node if it isn't already.

Default: Y.Node.create(this.containerTemplate)

Fires event `viewContainerChange`

Fires when the value for the configuration attribute viewContainer is changed. You can listen for the event using the on method if you wish to be notified before the attribute's value has changed, or using the after method if you wish to be notified after the attribute's value has changed.

Parameters:

e EventFacade
An Event Facade object with the following attribute-specific properties added:
- prevVal Any
  The value of the attribute, prior to it being set.
- newVal Any
  The value the attribute is to be set to.
- attrName String
  The name of the attribute being set.
- subAttrName String
  If setting a property within the attribute's value, the name of the sub-attribute property being set.

Events

`destroy`

Inherited from BaseObservable: base/js/BaseObservable.js:144

Lifecycle event for the destroy phase, fired prior to destruction. Invoking the preventDefault method on the event object provided to subscribers will prevent destruction from proceeding.

Subscribers to the "after" moment of this event, will be notified after destruction is complete (and as a result cannot prevent destruction).

Event Payload:

e EventFacade

Event object

`init`

Inherited from BaseObservable: base/js/BaseObservable.js:61

Lifecycle event for the init phase, fired prior to initialization. Invoking the preventDefault() method on the event object provided to subscribers will prevent initialization from occuring.

Subscribers to the "after" momemt of this event, will be notified after initialization of the object is complete (and therefore cannot prevent initialization).

Event Payload:

e EventFacade

Event object, with a cfg property which refers to the configuration object passed to the constructor.

`navigate`

Inherited from PjaxBase: pjax/js/pjax-base.js:16

Available since 3.5.0

Fired when navigating to a URL via Pjax.

When the navigate() method is called or a pjax link is clicked, this event will be fired if the browser supports HTML5 history and the router has a route handler for the specified URL.

This is a useful event to listen to for adding a visual loading indicator while the route handlers are busy handling the URL change.

Event Payload:

url String

The URL that the router will dispatch to its route handlers in order to fulfill the enhanced navigation "request".
[force=false] Boolean optional

Whether the enhanced navigation should occur even in browsers without HTML5 history.
[hash] String optional

The hash-fragment (including "#") of the url. This will be present when the url differs from the current URL only by its hash and navigateOnHash has been set to true.
[originEvent] Event optional

The event that caused the navigation. Usually this would be a click event from a "pjax" anchor element.
[replace] Boolean optional

Whether or not the current history entry will be replaced, or a new entry will be created. Will default to true if the specified url is the same as the current URL.

`ready`

Inherited from Router: app/js/router.js:24

Fired when the router is ready to begin dispatching to route handlers.

You shouldn't need to wait for this event unless you plan to implement some kind of custom dispatching logic. It's used internally in order to avoid dispatching to an initial route if a browser history change occurs first.

Event Payload:

dispatched Boolean

true if routes have already been dispatched (most likely due to a history change).