What is custom controller in SAP BC-WD - Web Dynpro?

SAP Term: custom controller

• Component: BC-WD

• Component Name: Web Dynpro

• Description: A controller that can be defined by application development and used to share common data over several views. Custom controllers are defined for purposes that cannot be assigned to view controllers or component controllers, and serve as structuring element of a application. Custom controllers use their context to communicate with their surroundings. They are used for manipulating data, or connecting to the back end.

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• Key Concepts: 
  Custom controller is a type of controller in the BC-WD Web Dynpro component of SAP. It is used to define the behavior of a view or window in an application. It is responsible for managing the data and logic of the application, and for providing the user interface. 
  
  How to use it: 
  Custom controllers are created in the Web Dynpro Component Controller. They can be used to define the behavior of a view or window in an application. The custom controller can be used to manage data and logic, as well as provide the user interface. The custom controller can also be used to define navigation between views and windows, as well as to define actions that can be triggered by the user. 
  
  Tips & Tricks: 
  When creating a custom controller, it is important to consider how it will interact with other components in the application. It is also important to consider how it will interact with other controllers, such as the window controller or view controller. Additionally, it is important to consider how the custom controller will interact with other elements of the application, such as data sources and services. 
  
  Related Information: 
  For more information on custom controllers in BC-WD Web Dynpro, please refer to SAP's official documentation: https://help.sap.com/viewer/product/BC_WD_WEB_DYNPRO/731/en-US