View Mediator and ViewNavigator

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View Mediator Support

Swiz includes two metadata tags which support the view mediator pattern. This allows references to views to be supplied to other beans. These two tags are [ViewAdded] and [ViewRemoved]. The tags have no attributes, so using them is very straightforward.

[ViewAdded] and [ViewRemoved] can be specified on properties, setters or methods in beans. Swiz will pass in any instances of the type specified that it detects have been added to or removed from stage. The events that trigger these actions are those specified in your SwizConfig's setUpEventType and tearDownEventType properties.

For example:

[ViewAdded]
public function userListViewAdded( view : UserListView ) : void
{
    this.view = view;
}

[ViewRemoved]
public function userListViewRemoved( view : UserListView ) : void
{
    this.view = null;
}

ViewNavigator Metadata Tag

In Flex mobile projects, you can now use the [ViewNavigator] tag to get a reference to the ViewNavigator instance in non-view classes. This works in a manner similar to [ViewAdded]:

[ViewNavigator]
public var viewNavigator : ViewNavigator;