Package puremvc :: Module core :: Class View

type View

          object --+
                   |
interfaces.IView --+
                   |
                  View

A Singleton IView implementation.

In PureMVC, the View class assumes these responsibilities:

Maintain a cache of IMediator instances.

Provide methods for registering, retrieving, and removing IMediators.

Notifiying IMediators when they are registered or removed.

Managing the observer lists for each INotification in the application.

Providing a method for attaching IObservers to an INotification's observer list.

Providing a method for broadcasting an INotification.

Notifying the IObservers of a given INotification when it broadcast.

See Also:: Mediator, Observer, Notification

Instance Methods

[hide private]

initializeView(self)
Initialize the Singleton View instance. source code

registerObserver(self, notificationName, observer)
Register an IObserver to be notified of INotifications with a given name. source code

notifyObservers(self, notification)
Notify the IObservers for a particular INotification. source code

removeObserver(self, notificationName, notifyContext)
Remove the observer for a given notifyContext from an observer list for a given Notification name.

source code

registerMediator(self, mediator)
Register an IMediator instance with the View. source code

retrieveMediator(self, mediatorName)
Retrieve an IMediator from the View. source code

removeMediator(self, mediatorName)
Remove an IMediator from the View. source code

hasMediator(self, mediatorName)
Check if a Mediator is registered or not

source code

Static Methods

[hide private]

__new__(cls, *args, **kwargs)
This iView implementation is a Singleton, so you should not call the constructor directly, but instead call the static Singleton method View.getInstance() source code

getInstance()
View Singleton Static method. source code

Class Variables

[hide private]

instance = None

observerMap = None

mediatorMap = None

Method Details

[hide private]

new(cls, *args, **kwargs)
Static Method

source code

This iView implementation is a Singleton, so you should not call the constructor directly, but instead call the static Singleton method View.getInstance()

Overrides: object.__new__

getInstance()
Static Method

source code

View Singleton Static method.

Returns:: the Singleton instance of View

initializeView(self)

source code

Initialize the Singleton View instance.

Called automatically by the constructor.

registerObserver(self, notificationName, observer)

source code

Parameters:

notificationName - the name of the INotifications to notify this IObserver of
observer - the IObserver to register

Overrides: interfaces.IView.registerObserver

notifyObservers(self, notification)

source code

Notify the IObservers for a particular INotification.

All previously attached IObservers for this INotification's list are notified and are passed a reference to the INotification in the order in which they were registered.

Parameters:

notification - the INotification to notify IObservers of.

Overrides: interfaces.IView.notifyObservers

removeObserver(self, notificationName, notifyContext)

source code

Remove the observer for a given notifyContext from an observer list for a given Notification name.

Parameters:

notificationName - which observer list to remove from
notifyContext - remove the observer with this object as its notifyContext

registerMediator(self, mediator)

source code

Registers the IMediator so that it can be retrieved by name, and further interrogates the IMediator for its INotification interests.

If the IMediator returns any INotification names to be notified about, an Observer is created encapsulating the IMediator instance's handleNotification method and registering it as an Observer for all INotifications the IMediator is interested in.

Parameters: