Good one! I´ve never used ChangeWatcher in this way.
Thank you 2011/2/9 Raj <[email protected]> > > hi Diego, > > thanks for sharing knowledge about as3signals. > > I would have used same approach, but implementation would have used > changeWatcher. In view create a watcher for the model's property. > > In view: > ChangeWatcher.watch(MyModel.getInstance(), > "itemsUpdated", ItemsUpdatedHandler); > > Raj > > 2011/2/8 Diego Ponce de León <[email protected]> > > Oh, and if someone ask why I´m using Signals here, the answer is easy: I >> don´t want to create a new flash Event wherever I need to fire a >> notification or dispatching data. So, in the example, "itemsUpdated" is just >> a property in the model: >> >> public var itemsUpdated:Signal = new Signal(ArrayCollection); >> >> El 8 de febrero de 2011 17:48, Diego Ponce de León >> <[email protected]>escribió: >> >> Yeah, that would be a possible "solution". But in that way you are missing >>> the point. You are breaking the hold view encapsulation and the framework >>> flow. >>> >>> I´m using another "solution" in a current project: >>> The model has one or more Signal events (as3Signals) that is fired from a >>> command. The model itself is a Singleton, so I can do something like this >>> from the command: >>> >>> private function OnResult(event:ResultEvent):void >>> { >>> var items:ArrayCollection = event.result as ArrayCollection; >>> MyModel.getInstance().items = items; >>> MyModel.getInstance().itemsUpdated.dispatch(items); // itemsUpdated >>> is a simple Signal >>> } >>> >>> on the view: >>> >>> MyModel.getInstance().itemsUpdated.add(ItemsUpdatedHandler); >>> >>> private function ItemsUpdatedHandler(items:ArrayCollection):void >>> { >>> // do something >>> } >>> >>> >>> The view is subscribed to that Signal. This way the view can notice when >>> a command is done and I don´t break the MVC flow because the view only knows >>> about the model. >>> >>> What do you think? >>> >>> 2011/2/8 Raj <[email protected]> >>> >>> >>>> hi Diego, >>>> >>>> What you probably need is a callback method. >>>> If view could have a handle to operation's AsynToken, it can attach its >>>> own responder to it. >>>> >>>> This mechanism along with cairngorm's boilerplate code will certainly >>>> make a project's code complex and difficult to debug. >>>> >>>> I would rather share the reference to the service endpoint to the view >>>> and let view attach a responder to it. >>>> Am assuming that the view is a large piece of code providing significant >>>> functionality and not just a tiny view like a Alert with more buttons. >>>> Then this approach is still scalable as the complexity of that view >>>> remains in one file. >>>> >>>> Every application is different and this approach may not work >>>> universally. >>>> >>>> regards, >>>> Raj >>>> >>>> 2011/2/3 Diego Ponce de León <[email protected]> >>>> >>>>> It is not just "plenty of boiler plate code" thing. >>>>> >>>>> For me the Cairngorm´s handicap is that all views are based on data >>>>> binding. Don´t get me wrong. Flex data binding is a wonderful world, but >>>>> not >>>>> for every case. >>>>> >>>>> This is a usual scenario: >>>>> >>>>> >>>>> 1. View dispatch an event >>>>> 2. FrontController catch it and execute a command >>>>> 3. The command make a service call and wait to response >>>>> 4. The command gets the service response and modifies the model >>>>> (bindable) >>>>> 5. The view updates JUST because a property is binded to the model >>>>> >>>>> >>>>> The last point is very useful sometimes, for example, if you have a >>>>> list or datagrid listening to some bindable variable at the model. >>>>> But what happens if you just need to call a method in the view? >>>>> What happens if you just need to change any value property in the >>>>> view, not depending on the model? >>>>> >>>>> Ok, and you could say: "put that property in the model"... >>>>> Sadly, that is wrong in many scenarios (too many for me) >>>>> >>>>> So, it could happen that a change on the view is not dependent on the >>>>> model or a variable, and you just need to tell the view to update or >>>>> change >>>>> itself in some way. >>>>> A good example of what I´m talking about are Robotlegs view mediators. >>>>> >>>>> >>>>> >>>>> 2011/1/25 Prasanna <[email protected]> >>>>> >>>>> hello Diego, >>>>>> Can you justify why Cairngorm is worst? >>>>>> >>>>>> On Jan 22, 11:40 pm, Diego Ponce de León <[email protected]> wrote: >>>>>> > Whatever you do, don't use cairngorm. It's the worst framework I've >>>>>> ever >>>>>> > used >>>>>> > El 22/01/2011 13:27, "naveen SR" <[email protected]> escribió: >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > > If you have communication to server side I would recommend MATE >>>>>> framework >>>>>> > > ....http://mate.asfusion.com/. >>>>>> > >>>>>> > > I like this framework over the others for several reasons :). >>>>>> > >>>>>> > > Thanks, >>>>>> > > Naveen >>>>>> > >>>>>> > > On Sat, Jan 22, 2011 at 4:10 AM, Daniel Gerep < >>>>>> [email protected] >>>>>> > >wrote: >>>>>> > >>>>>> > >> Hi guys. >>>>>> > >>>>>> > >> Which is the best framework to work with Flex? I'll start a new >>>>>> project >>>>>> > and >>>>>> > >> want to use a framework and I don't have to much experience with >>>>>> Flex. >>>>>> > >>>>>> > >> Thanks in advance. >>>>>> > >>>>>> > >> -- >>>>>> > >> *Att* >>>>>> > >> *Daniel Gerep* >>>>>> > >> *www.redenoos.com.br* >>>>>> > >>>>>> > >> -- >>>>>> > >> You received this message because you are subscribed to the >>>>>> Google Groups >>>>>> > >> "Flex India Community" group. >>>>>> > >> To post to this group, send email to [email protected] >>>>>> . >>>>>> > >> To unsubscribe from this group, send email to >>>>>> > >> [email protected] >>>>>> <flex_india%2Bunsubscribe@googlegrou ps.com> >>>>>> > >>>>>> > <flex_india%[email protected] >>>>>> <flex_india%252Bunsubscribe@googl egroups.com> >>>>>> > >>>>>> > >> . >>>>>> > >> For more options, visit this group at >>>>>> > >>http://groups.google.com/group/flex_india?hl=en. >>>>>> > >>>>>> > > -- >>>>>> > > You received this message because you are subscribed to the Google >>>>>> Groups >>>>>> > >>>>>> > "Flex India Community" group.> To post to this group, send email to >>>>>> [email protected]. >>>>>> > > To unsubscribe from this group, send email to >>>>>> > >>>>>> > [email protected] >>>>>> <flex_india%2Bunsubscribe@googlegrou ps.com> >>>>>> > .> For more options, visit this group at >>>>>> > >>>>>> > http://groups.google.com/group/flex_india?hl=en. >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> > >>>>>> >>>>>> -- >>>>>> You received this message because you are subscribed to the Google >>>>>> Groups "Flex India Community" group. >>>>>> To post to this group, send email to [email protected]. >>>>>> To unsubscribe from this group, send email to >>>>>> [email protected]. >>>>>> For more options, visit this group at >>>>>> http://groups.google.com/group/flex_india?hl=en. >>>>>> >>>>>> >>>>> >>>>> >>>>> -- >>>>> Diego Ponce de León >>>>> >>>>> http://www.xleon.net >>>>> http://twitter.com/diegoxleon >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "Flex India Community" group. >>>>> To post to this group, send email to [email protected]. >>>>> To unsubscribe from this group, send email to >>>>> [email protected]. >>>>> For more options, visit this group at >>>>> http://groups.google.com/group/flex_india?hl=en. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to the Google >>>> Groups "Flex India Community" group. >>>> To post to this group, send email to [email protected]. >>>> To unsubscribe from this group, send email to >>>> [email protected]. >>>> For more options, visit this group at >>>> http://groups.google.com/group/flex_india?hl=en. >>>> >>> >>> >>> >>> -- >>> Diego Ponce de León >>> >>> http://www.xleon.net >>> http://twitter.com/diegoxleon >>> >>> >> >> >> -- >> Diego Ponce de León >> >> http://www.xleon.net >> http://twitter.com/diegoxleon >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Flex India Community" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]. >> For more options, visit this group at >> http://groups.google.com/group/flex_india?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Flex India Community" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/flex_india?hl=en. > -- Diego Ponce de León http://www.xleon.net http://twitter.com/diegoxleon -- You received this message because you are subscribed to the Google Groups "Flex India Community" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/flex_india?hl=en.
