Where do I use $wnd.test.JsOpClass()? It doesn't work within <script> tags inside the HMTL file of my GWT project.
The reason I'm looking at JsInterop was because we want to use web workers. And since there is no GWT implementation of web workers I would do this via native calls. And the web worker would only forward methods because once I'm in the worker thread I have to call GWT functions again. GWT Mainthread ---> Worker.js ---> GWT in a worker thread The calls from Worker.js to GWT in the worker thread would also pass an instance of the worker itself into GWT (as JavaScriptObject) so I could call worker.postMessage to get back to the main thread. On 11 April 2017 at 16:42, Vassilis Virvilis <[email protected]> wrote: > Hi, > > 1. With jsinterop you won't need any JSNI normally. > 2. If you have older JSNI code that calls your new code (can't really > happen) you can > a) use new $wnd.test.JsOpClass(); with -generateJsInteropExports as > Thomas suggested > b) use the old syntax found here http://www.gwtproject.org/doc/latest/ > DevGuideCodingBasicsJSNI.html and that would be something like @com.test. > workertest.shared.JsOpClass::new()() Note the ()() double parenthesis. > > Do you want JsOpClass to be visible from both js and java? > > > On Tue, Apr 11, 2017 at 5:29 PM, Philipp Gloor <[email protected]> > wrote: > >> Can I access Classes and Methods decorated with JsType/JsMethod from >> anywhere within GWT granted I'm inside a JSNI block? Or is it restricted to >> packages? >> >> I added the -generateJsInteropExports to the run configuration arguments >> but when I try to create a new object JsOpClass() it tells me $wnd.pdf is >> undefined. >> >> On 11 April 2017 at 11:32, Thomas Broyer <[email protected]> wrote: >> >>> >>> >>> On Tuesday, April 11, 2017 at 10:43:06 AM UTC+2, Philipp wrote: >>>> >>>> If I have a java class and I mark it with @JsType I create a contract >>>> between Java and Javascript that I can use this class with it's given Java >>>> name in Javascript - is this correct? >>>> >>>> package com.test.workertest.shared; >>>> >>>> >>>> import com.google.gwt.core.shared.GWT; >>>> >>>> >>>> import jsinterop.annotations.*; >>>> >>>> >>>> @JsType(namespace = "test", name = "JsOpClass") >>>> public class JsOpClass >>>> { >>>> >>>> >>>> @JsMethod >>>> public void printStuff() >>>> { >>>> GWT.log("asdfasdf"); >>>> } >>>> } >>>> >>>> >>>> I would like to be able to create now a JsOpClass object in javascript >>>> and call printStuff() on this object but I actually don't understand where >>>> this is meant to be working. If I create for example a web worker which >>>> would create this class it reports that >>>> >>>> com.google.gwt.event.shared.UmbrellaException: Exception caught: ( >>>> ReferenceError) : testis not defined >>>> >>>> which makes sense because my worker.js knows nothing about GWT (would >>>> this be possible?) >>>> >>>> And even if I try it in the GWT HTML file it doesn't seem to know about >>>> this class and I get a test is not defined error. >>>> >>>> How do I actually call exposed classes/methods and from where is it >>>> possible? >>>> >>> >>> First, you have to pass -generateJsInteropExports to GWT (compiler, >>> codeserver, devmode), to actually export the JsType to JavaScript. >>> Then, from the context the GWT app (*.nocache.js) was loaded in, you >>> should be able to do '(new test.JsOpClass()).printStuff()', *after* your >>> GWT app has been loaded/started (once onModuleLoad has been called) >>> >>> >>>> Is it only a JSNI substitute >>>> >>> >>> Yes. >>> >>> >>>> (but even then I was not able to call it from a JSNI method). >>>> >>> >>> var o = new $wnd.test.JsOpClass(); >>> o.printStuff(); >>> >>> …but maybe all you miss is the -generateJsInteropExports? >>> >>> -- >>> You received this message because you are subscribed to a topic in the >>> Google Groups "GWT Users" group. >>> To unsubscribe from this topic, visit https://groups.google.com/d/to >>> pic/google-web-toolkit/wpcpNJka5qo/unsubscribe. >>> To unsubscribe from this group and all its topics, send an email to >>> [email protected]. >>> To post to this group, send email to [email protected] >>> . >>> Visit this group at https://groups.google.com/group/google-web-toolkit. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "GWT Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To post to this group, send email to [email protected]. >> Visit this group at https://groups.google.com/group/google-web-toolkit. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Vassilis Virvilis > > -- > You received this message because you are subscribed to a topic in the > Google Groups "GWT Users" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/google-web-toolkit/wpcpNJka5qo/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/google-web-toolkit. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "GWT Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/google-web-toolkit. For more options, visit https://groups.google.com/d/optout.
