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Web dynpro abap basics12/28/2022 ![]() Ver 1.0 Component Interface Interface Controller Interface View View Is embedded into window Defines the visible layout via predefined UI elements Dont contain any HTML or scripting UI elements Are the smallest UI building blocks (button, input field) Available as provided UI element libraries Have properties which steer their behavior Can be nested with Container UI elements Are positioned in hierarchical structure Controller Contains the logic of the UI layer Implements event handlers Implements action handlers Each view has its own view controller Context Hierarchy of nodes and attributes Nodes and attributes can be bound to properties of UI elements Framework cares about updating the values Each node can be a collection of elements. Ver 1.0 Web Dynpro Component Architecture A Typical Web Dynpro Component diagram is Web Dynpro Component contains Windows Views UI elements Layout Controllers Context Data Event Methods Attributes _ _ of 51 Ver 1.0 Objectives of Web Dynpro Model-based UI development Enforce clear separation between UI logic and business logic Little coding, lots of design Declarative UI development Central implementation of user interface standards Accessibility support Adobe Forms integration Centrally provided UI elements Internationalization support SAP Web Dynpro uses principles of MVC paradigm Controller: handle the user input and steers the application Views : define the layout Model : holds and provides the business logic See the MVC Architecture diagram: Model View Controller (MVC) _ _ of 51 Web Dynpro offers the following advantages for application developers: The use of declarative and graphical tools significantly reduces the implementation effort Web Dynpro supports a structured design process Strict separation between layout and business data Reuse and better maintainability by using components The layout and navigation is easily changed using the Web Dynpro tools Stateful applications are supported that is, if the page is changed and the required data remains intact so that you can access it at any time throughout the entire application context. It consists of a runtime environment and a graphical development environment with special Web Dynpro tools that are integrated in the ABAP Workbench (SE80). The Web Dynpro programming model is based on the Model View Controller paradigm, and has the following features that build on the classic dynpro model: Clear separation of business logic and display logic Uniform Meta model for all types of user interfaces Execution on a number of client platforms Extensive platform independence of interfaces What is Web Dynpro for ABAP? Web Dynpro for ABAP (WD4A, WDA) is the SAP standard UI technology for developing Web applications in the ABAP environment. Ver 1.0 Agenda What is Web Dynpro for ABAP? Objectives of Web Dynpro Web Dynpro Component Architecture Web Dynpro Component Development Web Dynpro is the SAP Netweaver programming model for user interfaces (UIs). ![]() ![]() Basic Web Dynpro ABAP Step by step guide Objective of this document: To give an understanding and knowledge on advanced technology to everyone who wanted to have knowledge in the area of Basic Web Dynpro ABAP
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