FLEX CAIRNGORM FRAMEWORK PDF

It is specifically designed to facilitate complex state and data synchronization between the client and the server, while keeping the programming of the View layer detached from the data implementation. The role of the View layer in a Cairngorm application is to throw events and bind to data stored in the Model. Components on the View can bind to Value Objects or other properties in the Model data layer. In a Cairngorm Model, related data are stored in Value Objects VOs , while simple variables can be stored as direct properties of the ModelLocator class. A static reference to the ModelLocator singleton instance is used by the View layers to locate the required data.

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Now your project tree should appear like the image below: 5. IModelLocator interface. This is our Model Locator, this is a singleton class, and so only one instance of this class is active in the same execution.

As described above, this class will be used to store all Application Value Objects. IModelLocator; import it. FrontController as superclass. This class now is empty after we will map events to related commands.

FrontController; import it. Create Delegate Object and remote repository What we need to have a fully customized template for our Flex project is the delegator and the remote repository. The project, as it is, is a fully customized Cairngorm one; you can use this template as default for all of your projects. ServiceLocator; import mx. ArrayCollection; import mx. Create Value Object We need to create the value objects that will store values to be displayed on our views. This object is very simple right now and it is not in scope of this tutorial to perform any other development.

In real projects is useful to enhance this Value Object in order to be similar to a Java Bean with get and set methods for each attribute e. It would be enough only one view, but I prefer to create two views in order to explain how is possible to change view with the Model Locator.

Register event handler and implement the business logic We need to register event in the Front Controller and create the Command object in order to manage the business logic.

ICommand , IResponder mx. ICommand; import com. CairngormEvent; import it. Delegate; import it. ConnectEvent; import it.

ViewModelLocator; import it. CompanyCodeVO; import mx. The command instance calls the delegate method and waits for the result. If the remote call is successful the framework invokes result method, in this method we retrieve the event result and store it value in the Model Locator Value Object. CompanycodeGetlist new ArrayCollection ; call.

Happy ending We are ready to execute our application. Before you start you have to be sure that the crossdomain. More information are available on this blog Add.

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Cairngorm[ edit ] Cairngorm is one of the primary open-source software frameworks for application architecture in Adobe Flex. It was developed by iteration::two, which was acquired by Macromedia in It is part of the Adobe Engagement Platform. Adobe Labs features Cairngorm as the architectural framework for Rich Internet Application programmers. Cairngorm is based on the MVC model. It is specifically designed to facilitate complex state and data synchronization between the client and the server, while keeping the programming of the View layer detached from the data implementation. The role of the View layer in a Cairngorm application is to throw events and bind to data stored in the Model.

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Now your project tree should appear like the image below: 5. IModelLocator interface. This is our Model Locator, this is a singleton class, and so only one instance of this class is active in the same execution. As described above, this class will be used to store all Application Value Objects. IModelLocator; import it. FrontController as superclass.

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Cairngorm (Flex framework)

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