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  1. #1
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    Default [FIXED] CheckBox in grid causes null pointer exception

    [FIXED] CheckBox in grid causes null pointer exception


    Hi,

    I am trying to render an EditorGrid, with a CheckColumnConfig column. The column gets rendered, checking works, but unchecking causes a null pointer exception with the following trace:

    [ERROR] Uncaught exception escaped
    java.lang.NullPointerException: null
    at com.extjs.gxt.ui.client.store.Record.set(Record.java:269)
    at com.extjs.gxt.ui.client.widget.grid.CheckColumnConfig.onMouseDown(CheckColumnConfig.java:112)
    at com.extjs.gxt.ui.client.widget.grid.CheckColumnConfig$1.handleEvent(CheckColumnConfig.java:67)
    at com.extjs.gxt.ui.client.widget.grid.CheckColumnConfig$1.handleEvent(CheckColumnConfig.java:1)
    at com.extjs.gxt.ui.client.event.BaseObservable.fireEvent(BaseObservable.java:100)
    at com.extjs.gxt.ui.client.widget.Component.fireEvent(Component.java:455)
    at com.extjs.gxt.ui.client.widget.grid.Grid.onMouseDown(Grid.java:601)
    at com.extjs.gxt.ui.client.widget.grid.Grid.onComponentEvent(Grid.java:373)
    at com.extjs.gxt.ui.client.widget.Component.onBrowserEvent(Component.java:758)
    at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1320)
    at com.google.gwt.user.client.DOM.dispatchEventAndCatch(DOM.java:1299)
    at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1262)
    at sun.reflect.GeneratedMethodAccessor40.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.ie.IDispatchImpl.callMethod(IDispatchImpl.java:126)
    at com.google.gwt.dev.shell.ie.IDispatchProxy.invoke(IDispatchProxy.java:155)
    at com.google.gwt.dev.shell.ie.IDispatchImpl.Invoke(IDispatchImpl.java:294)
    at com.google.gwt.dev.shell.ie.IDispatchImpl.method6(IDispatchImpl.java:194)
    at org.eclipse.swt.internal.ole.win32.COMObject.callback6(COMObject.java:117)
    at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method)
    at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1925)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2966)
    at com.google.gwt.dev.SwtHostedModeBase.processEvents(SwtHostedModeBase.java:235)
    at com.google.gwt.dev.HostedModeBase.pumpEventLoop(HostedModeBase.java:558)
    at com.google.gwt.dev.HostedModeBase.run(HostedModeBase.java:405)
    at com.google.gwt.dev.HostedMode.main(HostedMode.java:232)



    Also, clicking it the second time does make the checkmark appear.
    A quick fix seems to be, for my checkColumnConfig:

    CheckColumnConfig checkColumnConfig = new CheckColumnConfig(
    SecurityConstants.ASSIGNED, "assgined", 20) {
    protected void onMouseDown(GridEvent<ModelData> ge) {
    String cls = ge.getTarget().getClassName();
    if (cls != null && cls.indexOf("x-grid3-cc-" + getId()) != -1 && cls.indexOf("disabled") == -1) {
    ge.stopEvent();
    int index = grid.getView().findRowIndex(ge.getTarget());
    ModelData m = grid.getStore().getAt(index);
    Record r = grid.getStore().getRecord(m);
    boolean b = (Boolean) m.get(getDataIndex());
    r.setValid(getDataIndex(), true);
    r.set(getDataIndex(), !b);
    }
    }
    };

    Thanks.

  2. #2
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    Default


    This was already reported before and is fixed in SVN

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