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IF_WD_VIEW 
The interface IF_WD_VIEW is the generic interface for all Web Dynpro views.
This method retrieves a view element with the specified ID or NULL if an element exists.,
This method retrieves the root element for the view element tree of the respective view.
This method retrieves the metadata description of the view embedding.
This method sets the focus on a specific view element.
This method resets the view layout, that is, the individual view elements of the view, to the initial status declared at design time. All dynamic layout modifications are rejected and the view is gets the status back that it had when it was initialized.