Why it's look like a design problem?
Can I create ActivityManager with CachingActivityMapper
and FilteredActivityMapper?
Somthing like this:
public CachingHorizontalMasterActivityMapper(HorizontalMasterActivityMapper
horizontalMasterActivityMapper) {
FilteredActivityMapper.Filter filter = new
FilteredActivityMapper.Filter() {
@Override
public Place filter(Place place) {
return place instanceof MailDetailPlace ? new MailListPlace() :
place;
}
};
CachingActivityMapper cachingActivityMapper = new
CachingActivityMapper(horizontalMasterActivityMapper);
filteredActivityMapper = new FilteredActivityMapper(filter,
cachingActivityMapper);
}
@Override
public Activity getActivity(Place place) {
return filteredActivityMapper.getActivity(place);
}
This ActivityManager does not stop currently started activity
MailListActivity if new place is MailDetailPlace, right?
If, so, why ActivityManager ask current MailListActivity mayStop, if it
will not stop it?
Is there in my words any logic?
Or you mean that my ListEditActivity has design problem?
ListEditActivity is responsible for saving all changed list items in one
server call, each item has been changed by ItemDetailActivity (but not
actually sended to server for save).
for this functionality there is ListEditView which implements
IsEditor<ListEditor<T, E>>
and ListEditActivity.mayStop is performed then user go from one item to
edit another item in list - trying to change ItemDetailPlace - this place
stops current ItemDetailActivity and starts new ItemDetailActivity
this call of ListEditActivity.mayStop not need because ListEditActivity
will not stopped. Only ItemDetailActivity will be stopped in
ItemDetailActivity.mayStop needt to call.
And call ListEditActivity.mayStop need only when place ListEditPlace is
changed, then ListEditActivity will be stopped
very kind of you to send me those links ))))
On Thursday, March 26, 2015 at 8:27:25 PM UTC+3, Eric Ponthiaux wrote:
>
> It looks like a design problem .
>
> But if you really want to continue in this way , start by reading :
>
>
> http://www.gwtproject.org/javadoc/latest/com/google/gwt/place/shared/PlaceChangeEvent.html
>
> http://www.gwtproject.org/javadoc/latest/com/google/gwt/place/shared/PlaceChangeEvent.Handler.html
>
> http://www.gwtproject.org/javadoc/latest/com/google/gwt/place/shared/PlaceChangeRequestEvent.html
>
> http://www.gwtproject.org/javadoc/latest/com/google/gwt/place/shared/PlaceChangeRequestEvent.Handler.html
>
> Regards
>
>
>
>
>
>
>
> Le jeudi 26 mars 2015 11:35:42 UTC+1, Anton Mityagin a écrit :
>>
>>
>> Hi
>>
>> There is need to filter some places in onPlaceChangeRequest in
>> ActivityManager to prevent call mayStop of currentActivity.
>>
>> for example, I have ListEditActivity where I can edit list items. This
>> activity managed by ActivityManager this CachingActivityMapper
>> and FilteredActivityMapper.
>> Also I have ListSelectionItemPlace which indicates currently selected
>> item in the list
>>
>> After a list item has been edited and selected another item in the list,
>> there is an attempt to change the place to ListSelectionItemPlace
>> and fired event PlaceChangeRequestEvent. Handler onPlaceChangeRequest in
>> ActivityManager calls mayStop method of ListEditActivity it is returns some
>> message
>> because item has been edited.
>>
>> I need to ignore such places change, but I cannot to do it.
>>
>> method mayStop has no any parameters.
>>
>> Handle PlaceChangeRequestEvent in ListEditActivity gets no result because
>> event handler is still called in ActivityManager before.
>>
>> I can subclass ActivityManager for ListEditActivity and override
>> onPlaceChangeRequest method, but I have no access to currentActivity to ask
>> it ignor or not this call.
>>
>>
>> Have any ideas?
>>
>
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