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Is the central logical layout element in the Web Dynpro application.It is responsible for the presentation logic and for the browser layout.
Description of a visible screen area
Contains and lays out controls (aka widgets)
Defines actions (i.e. relevant input on controls by the user), which trigger event handling
Active part of web dynpro application,handles the data flow between the model and the view in both directions
Performs event handling
Each component has a component controller
Each view has a view controller
Custom controllers may be added for further structuring
3. Model :
Is the interface to the back end systm and is responsible for providing data to the entire application.
Represents the data in the backend
Reusable UI program package
Mostly contains views, often uses models
Communicates with other components via component interfaces
Something runnable (from client application, i.e. web browser)
Identified by URL
Running an application means starting a component, navigating” to an initial view in an initial window.
Single UI unit representing a component’s user Interface/View Composition needed for embedding purposes.
A controller contains a context which holds the data. The data flow between the contexts is referred to as context mapping.
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