Just a silly mistake, but could be useful for someone. In my Ui Binder style widget I had a default 0-arg constructor that looks like this:
public MyWidget() { initWidget(binder.createAndBindUi(this)); } ... and then later I decided I needed an additional constructor that takes args, but I forgot to call initWidget(binder.createAndBindUi(this)); in the second constructor. So now I have: public MyWidget(String message) { this(); // invoke my first default constructor which does the UI binding this.message = message; } Later I had a line of code that said myDivElement.setInnerText(label); but myDivElement was null because the Ui Binder had not "bound" yet. This was the cause of the message: Cannot set property 'textContent' of null All fixed, shan't be making that error again! On Sep 28, 11:27 am, Paul Schwarz <paulsschw...@gmail.com> wrote: > Using GWT 2.1 M3 and making use of Ui Binder widgets, and having done > some refactoring elsewhere I now get the odd UI related error that > looks like the following. I have no clue where to start tracing it and > doing null checks or whatever, someone, please give me a hint! > > com.google.gwt.core.client.JavaScriptException: (TypeError): Cannot > set property 'textContent' of null > stack: TypeError: Cannot set property 'textContent' of null > at [object Object].<anonymous> (unknown source) > at __gwt_jsInvoke (http://192.168.0.223:8888/cabs/hosted.html?cabs: > 76:35) > at eval at <anonymous> (http://192.168.0.223:8888/cabs/hosted.html? > cabs:54:12) > at XMLHttpRequest.<anonymous> (unknown source) > at unknown source > at __gwt_jsInvoke (http://192.168.0.223:8888/cabs/hosted.html?cabs: > 76:35) > at eval at <anonymous> (http://192.168.0.223:8888/cabs/hosted.html? > cabs:54:12) > at XMLHttpRequest.onreadystatechange (unknown source) > type: non_object_property_store > arguments: textContent, > __gwt_ObjectId: 28258 > at > com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChann > elServer.java: > 237) > at > com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java: > 126) > at > com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java: > 552) > at > com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java: > 269) > at > com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.j > ava: > 91) > at com.google.gwt.core.client.impl.Impl.apply(Impl.java) > at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214) > at sun.reflect.GeneratedMethodAccessor56.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at > com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103) > at > com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71) > at > com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.jav a: > 157) > at > com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChanne > lServer.java: > 281) > at > com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChan > nelServer.java: > 531) > at > com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java : > 352) > at java.lang.Thread.run(Unknown Source) -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To post to this group, send email to google-web-tool...@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.