"gwt-2.4.0/doc/helpInfo/jsoRestrictions.html" comes with GWT distribution. So far best readable document on the topic. However, a bit of disappointment. b/c It implies I can not implement callbacks in a neat way and in general.
The example you pointed me two days ago is no more relevat, since it breaks all the RULES. https://code.google.com/p/gwt-in-the-air/source/browse/trunk/src/net/ltgt/gwt/browserplus/core/client/BrowserPlus.java#145 >From gwt-2.4.0/doc/helpInfo/jsoRestrictions.html: 4. JSO classes cannot have instance fields. -- this is waht callbacks are about. 2. An interface type may be implemented by at most one JSO subtype. -- this excludes possibility of having a general interface for callbacks What this implies is that anythig more complex in JSNI boils down to TRAMPOLINE METHODS. Ugly. A lots of boilerplate code. The otherwise "closured" instance fileds (See 4. above) now have to be static Java fileds on the trapoline. (Trampoline is not very flexible/dynamic thing indeed) Dne pátek, 8. června 2012 9:57:09 UTC+2 Thomas Broyer napsal(a): > > > > On Friday, June 8, 2012 12:54:48 AM UTC+2, zorro wrote: >> >> Regarding callbacks there is one more error I am getting: >> Only one JavaScriptObject type may implement the methods of an interface >> that declared methods. >> >> This >> gwt-2.4.0/doc/helpInfo/jsoRestrictions.html >> explains alot. But why nobody tell me that in the past? I mean tutorials, >> talks? >> >> > You mean > https://developers.google.com/web-toolkit/doc/latest/DevGuideCodingBasicsOverlay > ? > -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/M1YX8ISGOhcJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
