Ok, here is my dilemma:
I got a Header presenter which is the nested presenter. The Customer
presenter is the child of Header presenter (ie the Customer presenter was
put into a slot of Header presenter).
There is Login Panel in Header presenter.
-*So here is the requirements*:
-Users can not see any Gui of Customer presenter if they have not logged in
yet.
-When the user logins successfully then it will visible the Gui of Customer
presenter.
-When User refreshes the page, the system will check if the customer
logined. If he/she did login, then the system will show Gui of Customer
presenter. If he/she has not logined, then prompt an error message.
So here is what I did.
In Header presenter, I have a method loginedSuccessfully(), this method
will passUserInfo() (use eventBus) into Customer presenter.
In Customer presenter, I have:
private int custID=0;
public void onReset(){
super.onReset();
if(custID>0){
showGui();
}
else{
hideGui(); // he hideGui() has Window.alert("Pls Login");
}
}
private PassUserInfoHandler passUserInfoHandler=new PassUserInfoHandler(){
@Override
public void onPassUserInfo(PassUserInfoEvent event) {
custID=event.getCustID();
if(custID>0){
showGui();
}
else{
hideGui();
}
}
};
When user refresh the Customer page. The onResetwill be called, if customer
has not logined yet then it won't show Gui & prompt a message.
When user logins by clicking login button then passUserInfoHandler will be
called & it will show the Gui if logged in ok.
But here is the problem. When user *already logged in* & if I open a new
browser Tab & re-open the Customer page, then this time both onReset &
passUserInfoHandler waere called & the page prompts the message *TWICE*.
This is not Good.
But why that happened?
This is because the onReset was called before the passUserInfoHandler was
called. That is why checking gui method was called *2 times*.
I used Scheduler.get().scheduleDeferred(new Command() {}; but it didn't
work.
Do you know how to fix the problem so that it can meet all the above
requirements?
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