BetaDesigns( Blog ) Flex and Component Development

 
package com.liquidphoto.settings.user
{
    public class EffectSettings
    {
        //----------------------------------------------------------------------
        //
        // Public Properties.
        //
        //----------------------------------------------------------------------
 
        [PublishSubscribe(persistent="true", objectId="effectSettings.playEffects")]
        [Bindable]
        public var playEffects:Boolean;
 
        [PublishSubscribe(persistent="true", objectId="effectSettings.intensity")]
        [Bindable]
        public var intensity:Number;
 
        [PublishSubscribe(persistent="true", objectId="effectSettings.initialised")]
        [Bindable]
        public var initialised:Boolean;
 
        //----------------------------------------------------------------------
        //
        // Public Methods.
        //
        //----------------------------------------------------------------------
 
        [Init]
        /**
         * Initialise the settings.
         * This will be automatically called by Parsley
         * when this class is created. 
         */
        public function init():void
        {
            if (!initialised)
            {
                reset();
            }
        }
 
        /**
         * Reset the settings to the initial values. 
         */
        public function reset():void
        {
            play = true;
            intensity = 6;
            initialised;
        }
    }
}

package com.liquidphoto.persistence
{
    import mx.utils.NameUtil;
    import flash.utils.getDefinitionByName;
 
    public class NavigationPersistence
    {
        //----------------------------------------------------------------------
        //
        // Constants
        //
        //----------------------------------------------------------------------
 
        private static const LOG:Logger = LogContext.getLogger(NavigationPersistence);
 
        //----------------------------------------------------------------------
        //
        // Public Properties.
        //
        //----------------------------------------------------------------------
 
        [Inject]
        public var navController:NavigationController;
 
        [PublishSubscribe(persistent="true", objectId="navigation")]
        [Bindable]
        public var persistedViews:Array;
 
        //----------------------------------------------------------------------
        //
        // Public Methods.
        //
        //----------------------------------------------------------------------
 
        [Init]
        public function init():void
        {
            //Setup our application close handlers.
            setupCloseHandlers();
            //If we have some persisted data try to push it to our navigation controller.
            if (persistedViews && persistedViews.length > 0)
            {
                var viewClass:Class;
                for each (var view:String in persistedViews)
                {
                    try
                    {
                        //Try to get our persisted view class
                        viewClass = getDefinitionByName(view) as Class;
                        navController.pushView(viewClass);
                    }
                    catch (error:ReferenceError)
                    {
                        LOG.fatal("Applicaiton persisted view could not be found! {0} Starting over from the begining.", view);
                        navController.pushView(SplashScreen);
                    }
                }
                LOG.debug("Rebuilding persisted views {0}", persistedViews);
            }
            else
            {
                //No views to persist so load our splashscreen.
                navController.pushView(SplashScreen);
            }
        }
        //----------------------------------------------------------------------
        //
        // Private methods. 
        //
        //----------------------------------------------------------------------
 
        private function setupCloseHandlers():void
        {
            //Listen for application exiting.
            NativeApplication.nativeApplication.addEventListener(Event.EXITING, nativeApp_exitingHandler);
        }
 
        private function nativeApp_exitingHandler(event:Event):void
        {
            var persistViews:Array = [];
            for each (var item:* in navController.stack)
            {
                persistViews.push(NameUtil.getUnqualifiedClassName(item));
            }
            persistedViews = persistViews;
            LOG.debug("Persisting views {0}", persistedViews);
        }
    }
}