Thanks for your suggestion. SNAPHOT did resolve this error, but caused
others. I ended up using JSNI and the cast() method of the
JavaScriptObject.
@JsFunctionpublic interface Function{
public JavaScriptObject call(JavaScriptObject event);
}
@JsType
public class MouseEvent extends JavaScriptObject {
protected MouseEvent(){}
public final native String getType() /*-{
return this.target;
}-*/;
}
and then:
map.on("click", new Function(){
@Override
public JavaScriptObject call(JavaScriptObject event) {
MouseEvent msEvent = event.cast();
});
This is the only workaround I found for now, although I would have prefered
to use JsInterop only. Hoping that the stable release will correct this
issue.
Le mardi 26 juillet 2016 17:07:00 UTC+2, Thomas Broyer a écrit :
>
>
>
> On Tuesday, July 26, 2016 at 4:45:03 PM UTC+2, zakaria amine wrote:
>>
>> I have an interface annotated with @JsFunction that I use as a callback
>> for events. As there are different types of events, I have added a type
>> parameter:
>>
>>
>> @JsFunctionpublic interface Function<T extends Event>{
>>
>> public JavaScriptObject call(T event);
>> }
>>
>>
>> From the entry point I do something like :
>>
>>
>> //...
>>
>> map.on("click", new Function<MouseEvent>(){
>> @Override
>> public JavaScriptObject call(MouseEvent event) {
>>
>> });
>>
>>
>> When I run the project, everything compiles and run fine. But when the
>> code above is executed, I get the following exception in the console:
>>
>> Uncaught java.lang.ClassCastException
>> InternalPreconditions.java:45
>>
>>
>> This seems like a GWT internal error. Is this a known bug in GWT 2.8 ?
>> Are generics not allowed with JsInterop types?
>>
>
> Many things have changed since 2.8.0-beta1, have you tried with
> 2.8.0-SNAPSHOT? (I'm not saying it *will* work, I'm saying one shouldn't
> draw conclusions based on beta1)
>
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