This document is from the authorized Flex curriculum written by learn the basics of building Flex applications using the Cairngorm framework. Flex frameworks are software libraries that assist developers in building rich internet Cairngorm is one of the primary open-source software frameworks for application Hello World Example using Cairngorm · Official Adobe Cairngorm Site. I have just constructed my first Cairngorm application: an Adobe Flex application that uses the Cairngorm application framework, implementing (For example, a user types their username and password into a login box, this.
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Dispatch thrown events to the mapped Command element. Our parameters are also assigned everytime the event is dispatched, eliminating the need for parameters to be fetched in a Cairngorm Command. In the example code, CairngormEventDispatcher dispatches the cgEvent: 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. This leads to the need for additional coding to convert the data to appropriate types.
Connects with a SOAP webservice. Save and close Welcome view and now edit CompanyList view. The class LoadEmployeesEvent package com. Development managers who have to work with distributed teams of beginner or mid-level Flex developers and need a safety net to split the project work into smaller controllable tasks e.
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First of all we need to create a SAP web service for our test. It aims at greatly simplifying the development of RIA applications through client-side data management, real-time messaging, transparent lazy-loading, paged queries, code generation and other features.
I just posted a post with an example. Cairngorm is one of the primary open-source software frameworks for application architecture in Adobe Flex.
It also implements the interface IResponderwhich requires you to add the result and fault methods. Before you start you have to be sure that the crossdomain. The Command implementation package com. Cairngorm was designed to ensure that UI components do not need to know where data is located. The SaveEmployeeEditsEvent event is dispatched: As described above, this class will be used to store all Application Value Objects.
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.
Even though data binding can help in writing less code, because Cairngorm enforces data binding as the only mechanism of updating the views, it makes them nonreusable.
The method execute must have an argument—the instance of the CairngormEvent object that may or may not encapsulate some application data for example, some value object that is not used in our scenario. The Controller is the most sophisticated part of the Cairngorm architecture. ModelLocator The Command class updates the framewwork in the model typically, a collection of value objects defined in the global ModelLocator. We start off by initializing the data object in the constructor of the event.
Suppose you have 10 [Bindable] Flwx variables in the ModelLocator. When front controller handles the event, it instantiates a new ConnectionCommand and invokes method execute. Please note the use of four global objects: This object is very simple right now and it is not in scope of this tutorial to perform any other development.
Online, you may encounter lots of debate regarding whether Cairngorm should be used in Flex projects.
The Command class is now free of all the complicated code that needs to be written for obtaining parameters. 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. The execute method of SaveEmployeeEditsCommand does not use any delegates, as it just needs to add a newly inserted Employee to the model.
On the same note, changes in the UI are propagated to the server side through this business layer. The execute method can update the central Model, as well as invoke a Service class which hutorial involves communication with a remote server. Cairngorm is based on the MVC model.
flex – Cairngorm Framework – Stack Overflow
Now your project tree should appear like the image below: Home About About Contact. Go into source mode and insert the script section as shown below: If so explain how you did it? Flex frameworks are software libraries that assist developers in building rich internet applications on the Apache Flex platform.
Flex Cairngorm – Interacting with a Command, through an Event
Now imagine a midsize web application that consists of 10 modules. ICommandIResponder mx. This class now is empty after we will map events to related commands. However, some of the PureMVC language ports are still in alpha. In the folder commands create a new Cairrngorm Class named ConnectCommand ; in the interface list add these interfaces: IResponder; private var service: