noNotify argument of MVCObject

[Masashi.K]

Hi all -

I wonder does "noNotify" argument of MVCObject.bindTo() method works correctly?

The maps api v3 reference said:
(http://goo.gl/LkcPh)
------------------
>bindTo(key:string, target:MVCObject, targetKey?:string, noNotify?:boolean)
Binds a View to a Model.

>notify(key:string)
Notify all observers of a change on this property.
This notifies both objects that are bound to the object's property as
well as the object that it is bound to.
------------------

And a previous post about MVCObject said:
(http://goo.gl/uR0l2)
------------------
>We do - calling
> model.notify("enabled")
>is equivalent to calling
> google.maps.event.trigger(model, "enabled_changed")
>ie. MVCObject uses events for notification.
------------------

So I recognize if I set the value "true" to noNotify argument
the MVCObject would not fire the "(key)_changed" event, but it works.
<test code>
--------------------
var mvcObject1 = new google.maps.MVCObject();
mvcObject1.set("visible", true);

var mvcObject2 = new google.maps.MVCObject();
mvcObject2.bindTo("visible", mvcObject1, "visible", true); //noNotify = true

google.maps.event.addListener(mvcObject2, "visible_changed", function(){
// I believe this alert never display
alert("visible_changed");
});

var chkbox = document.getElementById("chkbox");
google.maps.event.addDomListener(chkbox, "click", function(){
mvcObject1.set("visible", chkbox.checked);
});
--------------------

Do I have wrong understand, or bug?
Please tell me.

- Masashi

[Enoch Lau (Google Employee)]

The noNotify argument is to specify that you don't want to be notified on bind, not that you don't ever want to be notified.

Enoch

[Masashi.K]

I see.
I've understand the meaning, but I can not understand how to use it.
Could you tell me any snippet?

(I like MVCObject class because it's useful)

On 10月6日, 午後3:26, "Enoch Lau (Google Employee)" <enoch...@google.com>
wrote:
> The noNotify argument is to specify that you don't want to be notified on *
> bind*, not that you don't ever want to be notified.
>
> Enoch

[Masashi.K]

Ok, I finally understand.
-------------------------------------

var mvcObject1 = new google.maps.MVCObject();
mvcObject1.set("visible", true);

var mvcObject2 = new google.maps.MVCObject();

mvcObject2.visible_changed = function(){
alert("visible_changed");
};
mvcObject2.bindTo("visible", mvcObject1, "visible", false); //
noNotify = false
//mvcObject2.bindTo("visible", mvcObject1, "visible", true); //
noNotify = true
-------------------------------------

[Masashi.K]

Oops, I forgot. Thank you, Enoch.

[Enoch Lau (Google Employee)]

That's right. When you install the event listener before the bindTo, ordinarily, the event listener will be triggered at the time you do the bindTo. To avoid that, you can specify noNotify, which causes the event listener to be not triggered when you call bindTo.

Enoch

[Masashi.K]

I see, that makes sense.
I'm happy for fully understanding.
Thanks again!

On 10月6日, 午後5:18, "Enoch Lau (Google Employee)" <enoch...@google.com>
wrote: