We do exactly what you describe and it works fine. However, we don't use
GWTP. Our code looks very similar to yours. The presenter (activity)
initiates the query and invokes the dialog and hides it when the callback
returns.
Maybe GWTP is doing something in the interim.
Mike
On Saturday, October 26, 2013 2:21:57 AM UTC-7, Tom wrote:
>
> I am using GWTP to build my webapp. Here is my problem. I have a customer
> page (CustPresenter). When that page is visited, it will call & load Data
> from Database.
>
> It may take a while to load all data, so I *want my current Browser
> locked* so that the user can not click any things while data has not
> finished downloading yet.
>
> So here is what I am thinking. I want to show a DialogBox right before I
> make the RPC call & hide it when the call finishes. Look at the below code:
>
> public class CustPresenter extends
> Presenter<CustPresenter.MyView, CustPresenter.MyProxy> {
>
> private DialogBox loadingDialogBox=new DialogBox();
>
> @Inject DispatchAsync dispatchAsync;
>
> @Override
> public void prepareFromRequest(PlaceRequest request){
> super.prepareFromRequest(request);
> loadingDialogBox.show();
> GetData getDataAction=new GetData();
> dispatchAsync.execute(getDataAction, getDataCallback);
>
> }
>
> private AsyncCallback<GetDataResult> getDataCallback=new
> AsyncCallback<GetDataResult>(){
>
> @Override
> public void onFailure(Throwable caught) {
> loadingDialogBox.hide();
> }
>
> @Override
> public void onSuccess(GetVerbFromTripleResult result) {
> //show data here (it may take long time)
> loadingDialogBox.hide();
> }
> };
> }
>
> However, when runing, the dialogbox only shows up for 1 second & then
> disappears. Right After that all the UiBinder Guis show up on the Customer
> Page & user can click any buttons on the page while the data has not
> finished downloading yet. This is not a correct behavior.
>
> I want to do something like this http://sqlfiddle.com/#!2/a2581/1. As u
> can see, when u first time open that link, a loading panel popups & u can't
> click anything until all guis show up.
>
> So, why do I have this problem?
>
> How to fix it?
>
> Or generally, What is the simplest way to show "loading indicator" during
> an RPC call in GWTP?
>
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