com.vaadin.navigator

Interface ViewProvider

All Superinterfaces:

Serializable

All Known Implementing Classes:

Navigator.ClassBasedViewProvider, Navigator.StaticViewProvider

public interface ViewProvider
extends Serializable

A provider for view instances that can return pre-registered views or dynamically create new views. If multiple providers are used, getViewName(String) of each is called (in registration order) until one of them returns a non-null value. The getView(String) method of that provider is then used.

Since:

7.0

Author:

Vaadin Ltd

Method Summary

Modifier and Type	Method and Description
View	getView(String viewName) Create or return a pre-created instance of a view.
String	getViewName(String viewAndParameters) Extract the view name from a combined view name and parameter string.

Method Detail

getViewName

String getViewName(String viewAndParameters)

Extract the view name from a combined view name and parameter string. This method should return a view name if and only if this provider handles creation of such views.

Parameters:

viewAndParameters - string with view name and its fragment parameters (if given), not null

Returns:

view name if the view is handled by this provider, null otherwise

getView

View getView(String viewName)

Create or return a pre-created instance of a view. The parameters for the view are set separately by the navigator when the view is activated.

Parameters:

viewName - name of the view, not null

Returns:

newly created view (null if none available for the view name)