This document is from the authorized Flex curriculum written by learn the basics of building Flex applications using the Cairngorm framework. Cairngorm is based on Model View Controller (MVC) framework, specifically designed to facilitate complex state and data synchronization. These explain the Cairngorm Architecture, which is our preferred way to structure Flex applications. Below the introductory material can be found more detailed.
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To eliminate the need to import CairngormEventDispatcher in every view, starting from Cairngorm 2. The improved cairngorn of the Cairngorm framework fraamework more suitable for Web application development and maintenance. The View portion contains visual components required by your application, value objects, and Cairngorm-specific event classes used for communication with the Model and Controller tiers.
When a View component fires an event, FrontController finds the Command class that was registered with this event and calls its method execute.
flex – How cairngorm framework works internally – Stack Overflow
You are commenting using your Facebook account. Object; public function LoginDelegate responder: Cairngorm 3 is based on Parsley. Leave a Reply Cancel reply Enter your comment here Using a centralized Caiengorm also makes multiple components dependent on the knowledge of the properties of the model.
The other benefit is reusability of the modules. The fast development of mobile terminals provides good conditions for constructing function-completed autonomous learning information system. Please look around if you live in a cage J.
On the application startup, the code dispatches LoadEmployeesEvent and, as if by magic, the EmployeeList gets populated from Employees. ModelLocator The Command class updates the data framewotk the model typically, a collection of value objects defined in the caringorm ModelLocator.
For web services, call the method getWebService. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Software architecture Free computer libraries.
Cairngorm was designed to ensure that UI components do not need to know where data is located. Responders implement the mx.
Cairngorm Framework for Flex Developers
Flex frameworks are software libraries that assist developers in building rich internet applications on the Apache Flex platform. Please note that as ActionScript 3 does not support private constructors, the public constructor of this class throws an error if someone tries to improperly instantiate it i. Cairngorm 3 isn’t based on Parsley.
The locate the required service in the Service Locator, call the given method on it and route the response back to a responder object. Cairngorm Framework for Flex Developers. On the same note, changes in the UI are propagated to the server side through this business layer. The View portion of the employee list gets updated automatically as a result of data binding. Adobe Labs features Cairngorm as the architectural framework for Rich Internet Application programmers. AppModelLocator; [Bindable] private var model: Leave a Reply Cancel reply Enter your comment here The FrontController instance, which receives every View-generated event, dispatches the events to the assigned Command class based on the event’s declared type.
The fact that all services are located in a central place allows us to quickly reconfigure the data sources, i. The List component the View cairjgorm about its model and is bound to it directly via its dataProvider property. The business layer retrieves data from the servers and stores it in the memory objects that represent the data model, which use binding to notify the UI components about data arrival or changes.
Notify me of new comments via email. Start Free Trial No credit card required. The first step of using Cairngorm should be creating the backbone of frame work.
The framework with the MVC design pattern to simplify the application calrngorm model, specification of the application development process, and pay more attention to the business logic, the author after careful study of the entire framework, the control layer of the Cairngorm framework is made some improvements to the improved version of the Cairngorm framework.
List of Flex frameworks
In recent years, the Flex technology has been widely used. The fact that Cairngorm is built around a Command pattern with a centrally located command repository can be very convenient for some projects that require audit or undo functionality. A collaboration of recognized design patterns, Cairngorm exemplifies and encourages best-practices for RIA development advocated by Adobe Consulting, encourages best-practice leverage of the underlying Flex framework, while making it easier for medium to large teams of software engineers deliver medium to large scale, mission-critical Rich Internet Applications.
Create a common ancestor to all your commands and define the fault method there to avoid repeating the same code in each command class. The command folder is for Command classes; control is for events and FrontController ; the ModelLocator is located in the model folder; and the view folder has visual components as shown in Figures through See its methods setCredentials and setRemoteCredentials for details.
The Controller layer is implemented as a singleton FrontController. To find out more, including how to control cookies, see here: Obviously it is a mapping house of event and command. The controller is instantiated directly in the main. By continuing to use this website, you agree to their use. Typically every action of view will need create a event: The Command class updates the data in the model typically, a collection of value objects defined in the global ModelLocator.
Adobe Flash Media Server. To minimize the amount of manually written code, consider using Cairngen, an open source code generator for Cairngorm.
This class creates an event with an ID AppController. The other view work flow is similar to the above… The FB Project structure like: