RE: [flexcoders] Don't understand how to use deferred instantiation
Yes, a viewstack loads everything when the app loads. If you don't want that, I think you need to use states instead Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com http://www.cfwebtools.com 402-408-3733 x103 From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of biosmonkey Sent: Monday, September 14, 2009 1:49 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Don't understand how to use deferred instantiation I am having trouble understanding how to use deferred instantiation. I have a project with a viewstack, and the viewstack has a lot of canvas containers for different pages that are activated according to user selection on a menubar. Each page inside the canvas is actually one or two components. The problem is that each of these components has some custom code attached to the creationComplete event that loads external string files. What I am seeing is that all containers and the components are initializing when the application loads, and all string files are being loaded, regardless of the current viewstack view. This is creating a serious performance problem. To test the child controls, I added some alerts inside the page components as well (such as a label) that are attached to creationComplete and addedToStage. Both events are firing when the app loads, for all viewstack containers. I don't understand this. What exactly is being deferred? Do all components/child components/controls go through the initialization process and fire creationComplete, regardless of whether they are visible? Can someone please enlighten me on how to use this correctly? No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00
Re: [flexcoders] Don't understand how to use deferred instantiation
http://livedocs.adobe.com/flex/3/html/help.html?content=layoutperformance_05.html Have you tried setting the creation policy? Jake It says on the above page that viewStack defers child creation by default. Regards, Wesley Acheson On Mon, Sep 14, 2009 at 9:17 PM, Jake Churchill j...@cfwebtools.com wrote: Yes, a viewstack loads everything when the app loads. If you don’t want that, I think you need to use states instead Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com 402-408-3733 x103 *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On Behalf Of *biosmonkey *Sent:* Monday, September 14, 2009 1:49 PM *To:* flexcoders@yahoogroups.com *Subject:* [flexcoders] Don't understand how to use deferred instantiation I am having trouble understanding how to use deferred instantiation. I have a project with a viewstack, and the viewstack has a lot of canvas containers for different pages that are activated according to user selection on a menubar. Each page inside the canvas is actually one or two components. The problem is that each of these components has some custom code attached to the creationComplete event that loads external string files. What I am seeing is that all containers and the components are initializing when the application loads, and all string files are being loaded, regardless of the current viewstack view. This is creating a serious performance problem. To test the child controls, I added some alerts inside the page components as well (such as a label) that are attached to creationComplete and addedToStage. Both events are firing when the app loads, for all viewstack containers. I don't understand this. What exactly is being deferred? Do all components/child components/controls go through the initialization process and fire creationComplete, regardless of whether they are visible? Can someone please enlighten me on how to use this correctly? No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00
RE: [flexcoders] Don't understand how to use deferred instantiation
By default, Viewstack creates all of its children, but those children do not create their children unless they are the selectedChild. You can hook up to the creationComplete of one of those grandchildren. Alex Harui Flex SDK Developer Adobe Systems Inc.http://www.adobe.com/ Blog: http://blogs.adobe.com/aharui From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Wesley Acheson Sent: Monday, September 14, 2009 1:23 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Don't understand how to use deferred instantiation http://livedocs.adobe.com/flex/3/html/help.html?content=layoutperformance_05.html Have you tried setting the creation policy? Jake It says on the above page that viewStack defers child creation by default. Regards, Wesley Acheson On Mon, Sep 14, 2009 at 9:17 PM, Jake Churchill j...@cfwebtools.commailto:j...@cfwebtools.com wrote: Yes, a viewstack loads everything when the app loads. If you don't want that, I think you need to use states instead Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com 402-408-3733 x103 From: flexcoders@yahoogroups.commailto:flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.commailto:flexcoders@yahoogroups.com] On Behalf Of biosmonkey Sent: Monday, September 14, 2009 1:49 PM To: flexcoders@yahoogroups.commailto:flexcoders@yahoogroups.com Subject: [flexcoders] Don't understand how to use deferred instantiation I am having trouble understanding how to use deferred instantiation. I have a project with a viewstack, and the viewstack has a lot of canvas containers for different pages that are activated according to user selection on a menubar. Each page inside the canvas is actually one or two components. The problem is that each of these components has some custom code attached to the creationComplete event that loads external string files. What I am seeing is that all containers and the components are initializing when the application loads, and all string files are being loaded, regardless of the current viewstack view. This is creating a serious performance problem. To test the child controls, I added some alerts inside the page components as well (such as a label) that are attached to creationComplete and addedToStage. Both events are firing when the app loads, for all viewstack containers. I don't understand this. What exactly is being deferred? Do all components/child components/controls go through the initialization process and fire creationComplete, regardless of whether they are visible? Can someone please enlighten me on how to use this correctly? No virus found in this incoming message. Checked by AVG - www.avg.comhttp://www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00
RE: [flexcoders] Don't understand how to use deferred instantiation
Yeah, I always forget that you can change this. I think I meant the other way around. ViewStacks wait on everything, but other components (like Navigators) load everything up front. I think some of them extend the ViewStack don't they? Anyway, good information. Thanks for pointing out my backwards logic J Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com http://www.cfwebtools.com 402-408-3733 x103 From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of Wesley Acheson Sent: Monday, September 14, 2009 3:23 PM To: flexcoders@yahoogroups.com Subject: Re: [flexcoders] Don't understand how to use deferred instantiation http://livedocs.adobe.com/flex/3/html/help.html?content=layoutperformance_05 .html Have you tried setting the creation policy? Jake It says on the above page that viewStack defers child creation by default. Regards, Wesley Acheson On Mon, Sep 14, 2009 at 9:17 PM, Jake Churchill j...@cfwebtools.com wrote: Yes, a viewstack loads everything when the app loads. If you don't want that, I think you need to use states instead Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com http://www.cfwebtools.com 402-408-3733 x103 From: flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] On Behalf Of biosmonkey Sent: Monday, September 14, 2009 1:49 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Don't understand how to use deferred instantiation I am having trouble understanding how to use deferred instantiation. I have a project with a viewstack, and the viewstack has a lot of canvas containers for different pages that are activated according to user selection on a menubar. Each page inside the canvas is actually one or two components. The problem is that each of these components has some custom code attached to the creationComplete event that loads external string files. What I am seeing is that all containers and the components are initializing when the application loads, and all string files are being loaded, regardless of the current viewstack view. This is creating a serious performance problem. To test the child controls, I added some alerts inside the page components as well (such as a label) that are attached to creationComplete and addedToStage. Both events are firing when the app loads, for all viewstack containers. I don't understand this. What exactly is being deferred? Do all components/child components/controls go through the initialization process and fire creationComplete, regardless of whether they are visible? Can someone please enlighten me on how to use this correctly? No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00 No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00
Re: [flexcoders] Don't understand how to use deferred instantiation
That's not true. It only loads everything when the app loads if creationPolicy is set to all . ( http://livedocs.adobe.com/flex/3/langref/mx/core/Container.html#creationPolicy ). I suggest that the original poster check the creationPolicy for his viewStack. If none is set, move up the component chain to the main application file. Most likely someone somewhere set it to All ( |ContainerCreationPolicy.ALL ). | Jake Churchill wrote: Yes, a viewstack loads everything when the app loads. If you don't want that, I think you need to use states instead Jake Churchill CF Webtools 11204 Davenport, Ste. 100 Omaha, NE 68154 http://www.cfwebtools.com http://www.cfwebtools.com 402-408-3733 x103 *From:* flexcoders@yahoogroups.com [mailto:flexcod...@yahoogroups.com] *On Behalf Of *biosmonkey *Sent:* Monday, September 14, 2009 1:49 PM *To:* flexcoders@yahoogroups.com *Subject:* [flexcoders] Don't understand how to use deferred instantiation I am having trouble understanding how to use deferred instantiation. I have a project with a viewstack, and the viewstack has a lot of canvas containers for different pages that are activated according to user selection on a menubar. Each page inside the canvas is actually one or two components. The problem is that each of these components has some custom code attached to the creationComplete event that loads external string files. What I am seeing is that all containers and the components are initializing when the application loads, and all string files are being loaded, regardless of the current viewstack view. This is creating a serious performance problem. To test the child controls, I added some alerts inside the page components as well (such as a label) that are attached to creationComplete and addedToStage. Both events are firing when the app loads, for all viewstack containers. I don't understand this. What exactly is being deferred? Do all components/child components/controls go through the initialization process and fire creationComplete, regardless of whether they are visible? Can someone please enlighten me on how to use this correctly? No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.5.409 / Virus Database: 270.13.96/2369 - Release Date: 09/14/09 05:51:00 -- Jeffry Houser, Technical Entrepreneur Adobe Community Expert: http://tinyurl.com/684b5h http://www.twitter.com/reboog711 | Phone: 203-379-0773 -- Easy to use Interface Components for Flex Developers http://www.flextras.com?c=104 -- http://www.theflexshow.com http://www.jeffryhouser.com -- Part of the DotComIt Brain Trust
