Re: How to make sure object is set before initWidget()

Call 

   Widget mainMenu = createMenu();
     initWidget(mainMenu);

from the onSuccess() method of the RPC after you have set the userInfo object.

Something like:

rpcService.getUserInfo(username, new AsyncCallback<UserInfo>() {


         @Override
         public void onSuccess(UserInfo result) {
            UserPanel.userInfo = result;

            Widget mainMenu = createMenu();
                          initWidget(mainMenu);
 }


 @Override
 public void onFailure(Throwable caught) {
 // Window.alert(caught.getMessage());
 }
 });

Remember, GWT RPC is asynchronous, so you have to always make sure you execute dependent code blocks in sequence.

On Monday, December 12, 2016 at 4:34:22 PM UTC-5, Olar Andrei wrote:

Hello,

I'm creating a menu, and I basically need my UserInfo object already set (based on the username) before creating the menu and doing the initWidget().

Basically I have the username, and based on this, I query the DB and get everything else based on that username.

But I am using an RPC call for the backend part. How can I make sure that userInfo is set before proceeding to the createMenu() and initWidget() part ?

private static UserInfo userInfo;

public UserPanel() {
    container = new MaterialContainer();

  container.setFontSize("1em");

   setUserInfo("someUsername");

   Widget mainMenu = createMenu();
     initWidget(mainMenu);

}

public void setUserInfo(String username) {

    DBGetUserInfoAsync rpcService = (DBGetUserInfoAsync) GWT.create(DBGetUserInfo.class);

ServiceDefTarget target = (ServiceDefTarget) rpcService;

String moduleRelativeURL = GWT.getModuleBaseURL() + "DBGetUserInfoImpl";

target.setServiceEntryPoint(moduleRelativeURL);

rpcService.getUserInfo(username, new AsyncCallback<UserInfo>() {

        @Override

        public void onSuccess(UserInfo result) {

UserPanel.userInfo = result;

}

@Override

public void onFailure(Throwable caught) {

// Window.alert(caught.getMessage());

}

});

}

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