David's you could uses currentStateChanging to do the dispatchEvent. in the Object you want to do it.
REgards. On 11/17/06, David Harris <[EMAIL PROTECTED]> wrote:
Hi Matt, the problem isn't the ViewStack, but the states. If you have 2 states, and then you go from one to another, all the children are created. The situation I found this was where one State was a login and the other State the application. When logging was a success, the appliction switched to the "MainApplication" state, which then created ALL it's children. The fact that all the children are created had the same effect as having creationPolicy="all" set, which can not be good if application is quite complex. Hope that makes sense. Regards, David On 11/17/06, Matt Chotin <[EMAIL PROTECTED]> wrote: > > Yes, this is expected behavior. Is the problem that you have panels > in a ViewStack and you don't want the events for all of those at once? > Maybe you should use the "show" event instead? That will fire each time > the Panel in the stack is shown, so if you plan on going back and forth you > may want to keep a flag as to whether you've already executed that call. > > > ------------------------------ > > *From:* [EMAIL PROTECTED] ups.com [mailto:[EMAIL PROTECTED] ups.com] > *On Behalf Of *David Harris > *Sent:* Thursday, November 16, 2006 10:39 AM > *To:* flexcoders@yahoogroups.com > *Subject:* [flexcoders] Re: States create all their children > > > > I guess about now I start logging a bug... > > Anyone know how to do this? > > On 11/13/06, David Harris <[EMAIL PROTECTED]<djohnsmarie%40gmail.com>> > wrote: > > I have a situation where my "states" in my application are very > complex. > > > > Each state has a lot in them, and each view in the state has events of > > data retrieval tied to the "creationComplete" event. > > > > The problem is this: > > > > If you switch from one state to another, all the children of the new > > state are created, so all the "creationComplete" events are fired, and > > my server gets alot of hits very quickly, and the app takes a long > > time to load. > > > > Below is are 2 simple examples (I have posted before, so sorry for the > > double up...) that show what I mean: > > > > Baring an typo's, when you run example 1, and you click on the button > > to switch states, all the sub panels fire their creationComplete > > events, while in the second example, the creationComplete is fired as > > the ApplicationControlBar is clicked. > > > > Is the "expected" (and justified) behaviour of a Flex app, or am I > > (yet again) missing the obvious? > > > > Example 1 (with view states): > > > > =================================================================== > > > > <?xml version="1.0" encoding="utf-8"?> > > <mx:Application > > xmlns:mx="http://www.adobe.com/2006/mxml"; > > layout="absolute" > > currentState="initalizing" > > > > > > > <mx:Script> > > <![CDATA[ > > > > public function handleCreationComplete(event:Event):void > > { > > > > trace("This got created : " + event.target); > > > > } > > > > ]]> > > </mx:Script> > > > > > > <mx:states> > > <mx:State name="initalizing"> > > <mx:AddChild position="lastChild"> > > <mx:Button click="this.currentState = 'MainApplication'" /> > > </mx:AddChild> > > </mx:State> > > > > <mx:State name="MainApplication"> > > > > <mx:AddChild position="lastChild"> > > > > <mx:Panel width="400" height="400"> > > > > <mx:ApplicationControlBar width="100%" cornerRadius="6" > > shadowDistance="3" paddingLeft="40" > > > > > <mx:LinkBar dataProvider="myViewstack" disabledColor="#8F8F8F" > > color="#000000" separatorWidth="2"/> > > > > </mx:ApplicationControlBar> > > > > <mx:ViewStack id="myViewstack" width="100%" > > height="100%"> > > > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="one" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="two" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="three" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="four" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="five" > > width="100%" > > height="100%" > > /> > > > > </mx:ViewStack> > > > > </mx:Panel> > > > > </mx:AddChild> > > </mx:State> > > </mx:states> > > </mx:Application> > > > > > > =================================================================== > > > > Example 2: > > > > ================================================================== > > > > <?xml version="1.0" encoding="utf-8"?> > > <mx:Application > > xmlns:mx="http://www.adobe.com/2006/mxml"; > > layout="absolute" > > > > > > > > > <mx:Script> > > <![CDATA[ > > > > public function handleCreationComplete(event:Event):void > > { > > > > trace("This got created : " + event.target); > > > > } > > > > ]]> > > </mx:Script> > > > > > > <mx:Panel width="400" height="400"> > > > > <mx:ApplicationControlBar width="100%" cornerRadius="6" > > shadowDistance="3" paddingLeft="40" > > > > > <mx:LinkBar dataProvider="myViewstack" disabledColor="#8F8F8F" > > color="#000000" separatorWidth="2"/> > > > > </mx:ApplicationControlBar> > > > > <mx:ViewStack id="myViewstack" width="100%" > > height="100%"> > > > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="one" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="two" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="three" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="four" > > width="100%" > > height="100%" > > /> > > <mx:Panel creationComplete="handleCreationComplete(event)" > > label="five" > > width="100%" > > height="100%" > > /> > > > > </mx:ViewStack> > > > > </mx:Panel> > > > > > > </mx:Application> > > > > > > ================================================================== > > > >
-- ---------------------------- Igor Costa www.igorcosta.com
