Module to Module communication

Mariush T. — Wed, 08 Jul 2009 17:04:01 +0000

This example is implemented using PureMVC and demonstrates how to load dynamically, connect and communicate Modules that have been implemented using the PureMVC framework.GreenModule communicates with BlueModule directly through pipe(no need for sending messages to Shell/Application and from Shell back to the Module). The same happens for BlueModule-GreenModule communication, messages are sent through pipe.

View and study Source Code

Connecting Module to Shell – simplified diagram

Mariush T. — Wed, 24 Jun 2009 21:30:39 +0000

I had a hard time to understand Flex/PureMVC-Multicore version with Pipes utility especially when simple demos on the web use TeeSplit and Pipe to connect single module to application (diagram at the top-left). It didn’t really make sense to have TeeSplit for only one Pipe/Module. It makes more sense to add Tees(TeeSpit, TeeMerge) only when you go to the next level of having the application collaborate with multiple modules (diagram at the bottom).

Below code shows how to connect single module to application. ShellJunctionMediator.as

package com.mariusht.shellModuleDemo.shell.view
{
    import com.mariusht.shellModuleDemo.common.IPipeAwareModule;
    import com.mariusht.shellModuleDemo.common.PipeAwareModuleConstants;
    import com.mariusht.shellModuleDemo.shell.ShellFacade;

    import org.puremvc.as3.multicore.interfaces.INotification;
    import org.puremvc.as3.multicore.utilities.pipes.plumbing.Junction;
    import org.puremvc.as3.multicore.utilities.pipes.plumbing.JunctionMediator;
    import org.puremvc.as3.multicore.utilities.pipes.plumbing.Pipe;

    public class ShellJunctionMediator extends JunctionMediator
    {
        public static const NAME:String = 'ShellJunctionMediator';

        public function ShellJunctionMediator()
        {
            super(NAME, new Junction());
        }

        override public function listNotificationInterests():Array
        {
            var interests:Array = super.listNotificationInterests();
            interests.push(ShellFacade.MODULE_ADDED);
            return interests;
        }

        override public function handleNotification(note:INotification):void
        {
            switch(note.getName())
            {
                case ShellFacade.MODULE_ADDED:
                    connectModule(note.getBody() as IPipeAwareModule);
                    break;
            }
        }

        private function connectModule(module:IPipeAwareModule):void
        {
            var pipe:Pipe = new Pipe();
            junction.registerPipe(PipeAwareModuleConstants.SHELL_TO_MODULE_PIPE,
                Junction.OUTPUT, pipe);

            module.acceptInputPipe(PipeAwareModuleConstants.SHELL_TO_MODULE_PIPE, pipe);
        }
    }
}

Mariush T. - Flex Developer, Blogger » Pipes

Module to Module communication

Connecting Module to Shell – simplified diagram