Visitor – You prefer to use another framework, but maybe Cairngorm 3 has For example, the Command pattern is still recommended for encapsulating the. Cairngorm is based on Model View Controller (MVC) framework, specifically designed to facilitate complex state and data synchronization. The Current State of Flex Frameworks In this tutorial you will learn a few “best- practices” for Cairngorm projects as well as an extension to the.

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The Controller tier is responsible for invoking appropriate code containing the business logic of your application, which is implemented by using global FrontController and ServiceLocator classes as well as additional Command and Delegate classes. Components on the View can bind to Value Objects or other properties in the Model data layer. This design pattern will be used in Part 2 as well, so it is assumed that you are familiar with the concepts in Part 1 of the tutorial.

The fact that all services are located in a central place allows us to quickly reconfigure the data sources, i. Command When a View component fires an event, FrontController finds the Command class that was registered with this event and calls its method execute.

Read about it here and frammework it here. The Service to Worker pattern that was discussed in the previous tutorial is essential to this process.

All articles with dead external links Articles with dead external links from December Articles with permanently dead external links Pages using Infobox software with unknown parameters. How did it happen? It allows separate responsibilities of developers.


You can download the source code of this application at http: ModelLocator The Framewoek class updates the data in the model typically, a collection of value objects defined in the global ModelLocator.

Modularizing Flex applications is one of the major ways of minimizing the tutorjal of the downloadable Shockwave Flash SWF files.

List of Flex frameworks

Adobe Labs features Cairngorm as the architectural framework for Rich Internet Application programmers. The explanation of this pattern will span two tutorials. The loadEmployeesService class reads Employees. Up to now the tutorials have covered only one design pattern, the ModelLocator, but now you will be introduced to the most crucial element of Cairngorm, the Service to Worker design pattern.

To eliminate the need to import CairngormEventDispatcher in every view, starting from Cairngorm 2.

Introducing Cairngorm | Adobe Developer Connection

In Part 4 you saw the full Service to Worker pattern demonstrated. If this application has been built using Cairngorm, each of these modules becomes dependent on the central FrontController located in the main.

So, is Cairngorm right for your project? It is part of the Adobe Engagement Platform. The FrontController cairngorj, which receives every View-generated event, dispatches the events to the assigned Command class based on the event’s declared type. By using these callbacks the delegate will return to the command class the result or error information of the execution of the command in question. The other benefit is reusability of the modules.

The Delegate implementation package com. Start Free Trial No credit card tutprial.

The SaveEmployeeEditsEvent event is dispatched: On the application startup, the code dispatches LoadEmployeesEvent and, as if by magic, the EmployeeList gets populated from Employees. It requires developers to write lots of additional classes, which adds to project timeline. To Use or Not to Use Cairngorm? AppModelLocator; [Bindable] private var model: Because each model located inside the ModelLocator is bound to a UI control, its content gets updated automatically.

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If you have to develop a project without experienced Flex developers on your team, however, Cairngorm can give your project a structure that will prevent it from failing. I guess the easiest way to assist these people is to do a quick blog series on the benefits of Cairngorm. Now imagine a midsize web application that consists of 10 modules.

» Cairngorm

The entire framework is open-source, but commercial use of some “advanced modules” requires a commercial licence. This fraework is an archive of my old blog. This page was last edited on 25 Decemberat The Command implementation package com.

Many people were interested in Cairngorm, but I only had about 10 minutes to explain the basics of Cairngorm.

The Controller layer is implemented as a singleton FrontController. This tutorial tuforial cover the basic flow inside of a Cairngorm application, and the next tutorial will expand this flow to include server interaction. Since I have gotten a handful of requests this week — I determined to go ahead and post the links:. View Because each model located inside the ModelLocator is bound to a UI control, its content gets updated automatically.