mabye you can use a custom Proxy to do it there, but I do it always in
either onReset or prepareFromRequest.
On Thursday, September 8, 2016 at 12:41:35 AM UTC+2, harshyadav wrote:
>
> Thanks for the Reply Ümit,
>
> I was hoping to see if there is a built in way to handle requests in a
> proxy.
> But I'll try the onReset() method way you suggested.
>
> Thanks again!
>
> On Wednesday, September 7, 2016 at 10:09:14 AM UTC-4, Ümit Seren wrote:
>>
>> Why don't you just store the current product as a field variable in the
>> class and in the onReset method you can just access the currentPlaceRequest
>> and compare them and then conditonally load the data.
>>
>>
>> On Tuesday, September 6, 2016 at 5:48:52 PM UTC+2, harshyadav wrote:
>>>
>>> This is a GWTP question, asking here as no answer on the GWTP
>>> group/stackoverflow.
>>>
>>>
>>> I have a Presenter (with Proxy), and I display multiple child presenters
>>> (with ProxyPlace) inside the parent presenter.
>>>
>>> Parent Presenter:
>>>
>>>
>>> @ProxyStandard
>>> @NoGatekeeper
>>> public interface MyProxy
>>> extends Proxy<ParentPresenter> {
>>> }
>>>
>>>
>>>
>>> Child Presenters:
>>>
>>> @NameToken (NameTokens.CHILD)
>>> @ProxyCodeSplit
>>> public interface MyProxy
>>> extends ProxyPlace<ChildPresenter> {
>>> }
>>>
>>>
>>>
>>> The parent presenter gets the common data and display it in the top main
>>> menu. So far so good.
>>> When the parent presenter gets the data, it uses the event bus to
>>> generate an event. The child presenters implements the handler to listen to
>>> the event.
>>>
>>> The issue is that I want the parent presenter to load the new common
>>> data, only on the place change i.e. when the URL parameter changes.
>>> Since the Proxy presenters don't implement prepareFromRequest, I cant do
>>> that in Parent Presenter.
>>>
>>> I can work around with that, by loading common data in either onReset()
>>> or by implementing a NavigationEvent in the parent presenter.
>>> However in that case, the data would be loaded unnecessarily, even when
>>> not needed.
>>>
>>> For e.g.
>>> if the URL parameter is product=1, the child presenters look like:
>>> #child1;product=1
>>> #child2;product=1
>>>
>>> I want the Parent Presenter to only request the new data, if the actual
>>> URL parameter changes.
>>> That is:
>>> Load new data if URL changes from:
>>> #child1;product=1 TO #child1;product=2
>>>
>>> OR
>>>
>>> #child1;product=1 TO #child2;product=2
>>>
>>>
>>> NOT when it changes from:
>>> #child1;product=1 TO #child2;product=1
>>>
>>>
>>> What I can do is check in the Parent Presenter, if the current history
>>> parameter is same or different than the previous one, and then load new
>>> data.
>>> But is there a better way to do this. I want to call my data service
>>> only when needed.
>>>
>>>
>>> Thanks,
>>> Harsh
>>>
>>
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