Flex Application Architecture
Listing 7. LoginCommand.as
package com.jonniespratley.flexcontacts.commands { import com.adobe.cairngorm.commands.ICommand; import com.adobe.cairngorm.control.CairngormEvent; import com.jonniespratley.flexcontacts.events.GetContactsEvent; import com.jonniespratley.flexcontacts.events.LoginEvent; import com.jonniespratley.flexcontacts.model.FlexContactsModelLocator; import com.jonniespratley.flexcontacts.vo.*; import mx.controls.Alert; public class LoginCommand implements ICommand {
private var model:FlexContactsModelLocator = FlexContactsModelLocator.getInstance(); public function execute( event:CairngormEvent ) : void { trace( 'LoginCommand Executing' ); var evt:LoginEvent = event as LoginEvent; if ( evt.aUser.username == "admin" && evt.aUser.password == "admin" ) { model.isLoggedIn = true ; model.workflowState = FlexContactsModelLocator.MAIN_SCREEN; } else {
Alert.show( "Username: " + evt.aUser.username + "\nPassword was not valid.", "Login Error" ); model.isLoggedIn = false ; model.workflowState = FlexContactsModelLocator.LOGIN_SCREEN; }
}
}
}
Listing 8. FlexContactsController.as
package com.jonniespratley.flexcontacts.control {
import com.adobe.cairngorm.control.FrontController; import com.jonniespratley.flexcontacts.commands.*; import com.jonniespratley.flexcontacts.events.*; public final class FlexContactsController extends FrontController { public function FlexContactsController() { initilize(); } private function initilize():void {
this .addCommand( GetContactsEvent.GET_CONTACTS_EVENT, GetContactsCommand ); this .addCommand( LoginEvent.LOGIN_EVENT, LoginCommand );
trace( 'Registering Events to Commands' );
} }
}
03/2009 (5)
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