UmbrellaException which contains ClassCastException when using GWTBootstrap3 Extras Summernote event handling (KeyUp Event)

Question

I try to handle a Summernote Keyup event with this:

myEditor.addSummernoteKeyUpHandler(new SummernoteKeyUpHandler() {

        @Override
        public void onSummernoteKeyUp(final SummernoteKeyUpEvent event) {
            // TODO Auto-generated method stub
            log.fine("hello");
        }

    });

I get a UmbrellaException which is IMHO a class cast exception.

This is the call stack

I identified the following spot where te cast failes:

@HasNoSideEffects
static native boolean canCast(Object src, JavaScriptObject dstId) /*-{
if (@com.google.gwt.lang.Cast::instanceOfString(*)(src)) {
   return [email protected]::stringCastMap[dstId];
} else if ([email protected]::castableTypeMap) {
  return [email protected]::castableTypeMap[dstId]; //<-- this returns false!!!
} else if (@com.google.gwt.lang.Cast::instanceOfDouble(*)(src)) {
  return [email protected]::doubleCastMap[dstId];
} else if (@com.google.gwt.lang.Cast::instanceOfBoolean(*)(src)) {
  return [email protected]::booleanCastMap[dstId];
}
return false;
}-*/;

dstId contains:

Any help greatly appreciated!

I tested this with a small demo which actually works. But in my large application, I get this exception and I don't see why.

Do you have any idea whats wrong here?

Best regards Hannes

Answer 1

As Andrei suggested I set the style to DETAILED. I use Eclipse as a development environment. I decided to clean build the system (which I had done before). Now the problem has simply vanished !! Furthermore, I use SDBG (see: https://sdbg.github.io/) to debug my GWT application. This works pretty well (even without -style DETAILED). Now the very very strange thing remains. I can set breakpoints for my application and they all work well, except setting a breakpoint within the event handling method. I use a logger to print some text to the console, so I see that the event handler for summernote is actually called but the debugger will not stop. I checked whether the breakpoint is listed in the tab "Breakpoints" and it is and it is checked. I don't get it. Perhaps I have to rebuild all again.

But to keep long things short: The solution to the problem is probably to really issue a clean build and then hope for the best.