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**tuckerpm** · 14 May 2014, 12:03

I update GWT to 2.6.1 with no change. I then modified the code to make it call the 1 arg version of setDataSource instead and the Exception still occurs, but with a slightly different stacktrace. I'm hoping this alternate stacktrace will help someone point me in the right direction.

Thanks,
Pat

00:11:19.204 [ERROR] Uncaught Exception
com.google.gwt.event.shared.UmbrellaException: Exception caught: (TypeError) @com.smartgwt.client.widgets.BaseWidget::setProperty(Ljava/lang/String;Lcom/google/gwt/core/client/JavaScriptObject;)([string: 'dataSource', JavaScript object(7963)]): Unable to get property 'getItems' of undefined or null reference
at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
at com.google.gwt.user.client.ui.Widget.fireEvent(Widget.java:129)
at com.google.gwt.event.logical.shared.SelectionEvent.fire(SelectionEvent.java:43)
at com.google.gwt.user.client.ui.TabBar.selectTab(TabBar.java:514)
at com.google.gwt.user.client.ui.TabBar.selectTab(TabBar.java:482)
at com.google.gwt.user.client.ui.TabBar.selectTabByTabWidget(TabBar.java:665)
at com.google.gwt.user.client.ui.TabBar.access$0(TabBar.java:660)
at com.google.gwt.user.client.ui.TabBar$ClickDelegatePanel.onBrowserEvent(TabBar.java:161)
at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1714)
at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1653)
at com.google.gwt.user.client.impl.DOMImplStandard.dispatchEvent(DOMImplStandard.java:325)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:338)
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:219)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:576)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:284)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:356)
at sun.reflect.GeneratedMethodAccessor241.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
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.java:172)
at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:293)
at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:547)
at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:364)
at java.lang.Thread.run(Thread.java:744)
Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError) @com.smartgwt.client.widgets.BaseWidget::setProperty(Ljava/lang/String;Lcom/google/gwt/core/client/JavaScriptObject;)([string: 'dataSource', JavaScript object(7963)]): Unable to get property 'getItems' of undefined or null reference
at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:249)
at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:576)
at com.google.gwt.dev.shell.ModuleSpace.invokeNativeVoid(ModuleSpace.java:304)
at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeVoid(JavaScriptHost.java:107)
at com.smartgwt.client.widgets.BaseWidget.setProperty(BaseWidget.java)
at com.smartgwt.client.widgets.BaseWidget.setAttribute(BaseWidget.java:962)
at com.smartgwt.client.widgets.grid.ListGrid.setDataSource(ListGrid.java:19635)

**tuckerpm** · 15 May 2014, 07:01

Any ideas what I can check to figure this issue out? I'm at a loss...

**Blama** · 15 May 2014, 07:49

For a JS error, Isomorphic will definitely ask for your exact framework version and most likely for a minimal testcase.

Best regards,
Blama

**tuckerpm** · 15 May 2014, 08:32

Thanks Blama, I will modify the original post to contain the version number printed in the console.

I spent hours yesterday trying to reproduce the issue in a stand alone project, but failed to do so. If I knew what could potentially be causing the issue I would be more than happy to provide a testcase.

With the Smart GWT Console showing I see the following error:

12:22:02.843:TMR3:WARN:Log:TypeError: Unable to get property 'hasFocus' of undefined or null reference
Stack from error.stack:
GridBody.redraw () @ module/sc/modules/ISC_Grids.js:713:22
Canvas.clearRedrawQueue () @ module/sc/modules/ISC_Core.js:2503:107
Class.fireCallback () @ module/sc/modules/ISC_Core.js:257:71
Timer._fireTimeout () @ module/sc/modules/ISC_Core.js:1106:76
Unknown script code () @ Unknown script code:1:1

This is quite different from the exception that is actually thrown. Really weird...

**tuckerpm** · 15 May 2014, 08:59

I just tried the latest 4.1 build it also throws the exception.

**tuckerpm** · 16 May 2014, 09:33

Any ideas would be greatly appreciated.

**Isomorphic** · 16 May 2014, 16:03

We haven't seen this issue. As Blama suggested, a standalone test case would be the way to go. Without this we have no way of knowing whether you've hit a framework bug or whether you're experiencing a side effect of broken application code, etc.

It should not be too difficult to build a test case if this is indeed a framework problem. You should make the test case as minimal as possible - basically an entryPoint class which we can actually run which contains only the code you need to define and draw your component, and perhaps a button to trip the interaction which fails.

Also be sure to include the actual steps you're taking to get the error.

You can use our shipped samples as a starting point if that's helpful, and for DataSource(s), you can use clientOnly dataSources, or steal DataSources from the samples.

Regards
Isomorphic Software

**tuckerpm** · 19 May 2014, 04:31

Thanks for the response. As I stated above I spent quite a bit of time trying to reproduce the problem in a stand alone project and was not successful. I tried the obvious, and am hoping someone can shed some light on the weird error that is being thrown. The error is telling me I passed in null or undefined object when I did not.

I don't have access to the code that is throwing the exception so I have no way of knowing what else I should try to do to reproduce the error.

Any ideas would be greatly appreciated!

Thanks,
Pat

**Isomorphic** · 20 May 2014, 09:44

Well we've made a theoretical change which may address this - 4.0p, 4.1p and 5.0d branches.
Please try the next nightly build (May 21 or above)
If the problem persists we'll definitely need a way to reproduce the problem from you.

Regards
Isomorphic Software

**nickv** · 18 Feb 2015, 17:34

was there any solution

Hi, tuckerpm

i got problems with ListGrid too, i think that it can be similar to yours. Did you find any solution?
I created grid with 2 editables columns and several readonly columns, set Edit by cell true. When i click one of the column editor opens allowing to change cell contents, if i then click the same cell for another record i got:

Code:

03:19:42.508 [ERROR] [fin] 03:19:42.509:pointerup3:WARN:Log:TypeError: Unable to get property '$11e' of undefined or null reference
Stack from error.stack:
    FormItem._absPos () @ fin/sc/modules/ISC_Forms.js:635:57
    FormItem.getStandaloneItemHTML () @ fin/sc/modules/ISC_Forms.js:666:404
    ListGrid.getEditItemCellValue () @ fin/sc/modules/ISC_Grids.js:1411:30
    ListGrid.getCellValue () @ fin/sc/modules/ISC_Grids.js:1350:66
    Function code () @ Function code:2:89
    GridRenderer._getCellValue () @ fin/sc/modules/ISC_Grids.js:476:323
    GridRenderer.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:575:1
    GridBody.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:736:1
    ListGrid.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:1912:16
    ListGrid.refreshCell () @ fin/sc/modules/ISC_Grids.js:1905:93
com.smartgwt.client.core.JsObject$SGWT_WARN: 03:19:42.509:pointerup3:WARN:Log:TypeError: Unable to get property '$11e' of undefined or null reference
Stack from error.stack:
    FormItem._absPos () @ fin/sc/modules/ISC_Forms.js:635:57
    FormItem.getStandaloneItemHTML () @ fin/sc/modules/ISC_Forms.js:666:404
    ListGrid.getEditItemCellValue () @ fin/sc/modules/ISC_Grids.js:1411:30
    ListGrid.getCellValue () @ fin/sc/modules/ISC_Grids.js:1350:66
    Function code () @ Function code:2:89
    GridRenderer._getCellValue () @ fin/sc/modules/ISC_Grids.js:476:323
    GridRenderer.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:575:1
    GridBody.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:736:1
    ListGrid.refreshCellValue () @ fin/sc/modules/ISC_Grids.js:1912:16
    ListGrid.refreshCell () @ fin/sc/modules/ISC_Grids.js:1905:93

but if i click editable cell in another column all is fine

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Exception with ListGrid.setDataSource when setAlwaysShowEditors(true)

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