Hybrid View

  1. #1
    Sencha User
    Join Date
    Jul 2011
    Posts
    28
    Vote Rating
    1
    rbrecheis is on a distinguished road

      0  

    Default Unanswered: GXT combobox giving JavaScript parent is null errors

    Unanswered: GXT combobox giving JavaScript parent is null errors


    Hi,

    I have a GXT combobox which I fill up with items, specifically ComboBox<ProjectItem>. When I load my application page the combo box gets properly filled and when I expand it I see the item or items. When I click on these items right away, it gets selected and there's no problem. If, however, I first expand the combo box and then click somewhere else (which I suppose triggers a blur/focus lost event on the combo box) I get the stack trace listed below.

    Does anybody have an idea what might be wrong? I instantiate the combo box as follows:

    public ComboBox<ProjectItem> getProjectComboBox()
    {
    if(mProjectComboBox == null)
    {
    mProjectComboBox = new ComboBox<ProjectItem>(
    new ListStore<ProjectItem>(ProjectItem.PROPERTIES.id()),
    ProjectItem.PROPERTIES.label());
    mProjectComboBox.setForceSelection(true);
    mProjectComboBox.getStore().setAutoCommit(true);
    mProjectComboBox.setTriggerAction(ComboBoxCell.TriggerAction.ALL);
    }
    return mProjectComboBox;
    }


    The ProjectItem.PROPERTIES.id() returns a ModelKeyProvider and the label() returns a LabelProvider.

    Any help would be highly appreciated!!

    Ralph


    ---------
    com.google.gwt.event.shared.UmbrellaException: One or more exceptions caught, see full set in UmbrellaException#getCauses
    [ERROR] at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:129)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.fire(Event.java:87)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.access$4(Event.java:73)
    [ERROR] at com.google.gwt.user.client.Event$.fireNativePreviewEvent(Event.java:488)
    [ERROR] at com.google.gwt.user.client.DOM.previewEvent(DOM.java:1328)
    [ERROR] at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    [ERROR] at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    [ERROR] at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    [ERROR] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
    [ERROR] at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    [ERROR] at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    [ERROR] at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    [ERROR] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
    [ERROR] at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
    [ERROR] at java.lang.Thread.run(Thread.java:680)
    [ERROR] Caused by: com.google.gwt.core.client.JavaScriptException: (TypeError): parent is null
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:248)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNativeBoolean(ModuleSpace.java:184)
    [ERROR] at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeBoolean(JavaScriptHost.java:35)
    [ERROR] at com.google.gwt.dom.client.DOMImplMozilla.isOrHasChild(DOMImplMozilla.java)
    [ERROR] at com.google.gwt.dom.client.Node$.isOrHasChild$(Node.java:280)
    [ERROR] at com.sencha.gxt.cell.core.client.form.ComboBoxCell.collapseIf(ComboBoxCell.java:690)
    [ERROR] at com.sencha.gxt.cell.core.client.form.ComboBoxCell$4.onPreview(ComboBoxCell.java:768)
    [ERROR] at com.sencha.gxt.core.client.util.BaseEventPreview.onPreviewNativeEvent(BaseEventPreview.java:115)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.dispatch(Event.java:195)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.dispatch(Event.java:1)
    [ERROR] at com.google.gwt.event.shared.GwtEvent.dispatch(GwtEvent.java:1)
    [ERROR] at com.google.web.bindery.event.shared.EventBus.dispatchEvent(EventBus.java:40)
    [ERROR] at com.google.web.bindery.event.shared.SimpleEventBus.doFire(SimpleEventBus.java:193)
    [ERROR] at com.google.web.bindery.event.shared.SimpleEventBus.fireEvent(SimpleEventBus.java:88)
    [ERROR] at com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:127)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.fire(Event.java:87)
    [ERROR] at com.google.gwt.user.client.Event$NativePreviewEvent.access$4(Event.java:73)
    [ERROR] at com.google.gwt.user.client.Event$.fireNativePreviewEvent(Event.java:488)
    [ERROR] at com.google.gwt.user.client.DOM.previewEvent(DOM.java:1328)
    [ERROR] at sun.reflect.GeneratedMethodAccessor59.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    [ERROR] at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    [ERROR] at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    [ERROR] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
    [ERROR] at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:337)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:218)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:136)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:561)
    [ERROR] at com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:269)
    [ERROR] at com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:91)
    [ERROR] at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
    [ERROR] at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:213)
    [ERROR] at sun.reflect.GeneratedMethodAccessor52.invoke(Unknown Source)
    [ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    [ERROR] at java.lang.reflect.Method.invoke(Method.java:597)
    [ERROR] at com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
    [ERROR] at com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
    [ERROR] at com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:172)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:292)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:546)
    [ERROR] at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:363)
    [ERROR] at java.lang.Thread.run(Thread.java:680)

  2. #2
    Sencha - GXT Dev Team
    Join Date
    Feb 2009
    Location
    Minnesota
    Posts
    2,640
    Answers
    107
    Vote Rating
    80
    Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice Colin Alworth is just really nice

      0  

    Default


    What GXT version are you using? Can you reproduce this on http://sencha.com/examples/, running 3.0.1?

Thread Participants: 1

film izle

hd film izle

film sitesi

takipci kazanma sitesi

takipci kazanma sitesi

güzel olan herşey

takipci alma sitesi

komik eğlenceli videolar