I am using GWT-RPC to populate Ext-GWT TreeGrids with data from a
server. I am using 4 callbacks to populate 6 TreeGrids. As the
callback onSuccess function modifies the TreeGrid by inserting rows,
the TreeGridView needs to render the rows. The callback class is
called MainPnlSummaryTablesAsyncCallback.
For some reason, when it needs to determine the TreeGridView's
scroller's offsetHeight via JSNI, onSuccess or onFailure is called on
another instance of the callback in the stack trace. A copy of the
stack trace I encountered is below.
Isn't this really weird? Why is this happening?
FYI I am using Ext-GWT 2.0.1 and GWT 1.7.0 and I am using hosted mode
browser to debug this, although I am pretty sure that this is an issue
for web mode.
PnlSummaryClientDebug_as10node6 [Java Application]
com.google.gwt.dev.HostedMode at localhost:3595
Thread [main] (Suspended (breakpoint at line 403 in MainPage
$MainPnlSummaryTablesAsyncCallback))
MainPage$8(MainPage
$MainPnlSummaryTablesAsyncCallback).onSuccess
(GWTPair<AggregateStringGWTTable,AggregateStringGWTTable>) line:
403
MainPage$8(MainPage
$MainPnlSummaryTablesAsyncCallback).onSuccess(Object) line: 1
RequestCallbackAdapter<T>.onResponseReceived(Request,
Response) line: 215
Request.fireOnResponseReceivedImpl(RequestCallback) line:
264
Request.fireOnResponseReceivedAndCatch(GWT
$UncaughtExceptionHandler, RequestCallback) line: 236
Request.fireOnResponseReceived(RequestCallback) line:
227
NativeMethodAccessorImpl.invoke0(Method, Object, Object[])
line: not available [native method] [local variables unavailable]
NativeMethodAccessorImpl.invoke(Object, Object[]) line:
39
DelegatingMethodAccessorImpl.invoke(Object, Object[])
line: 25
Method.invoke(Object, Object...) line: 597
MethodAdaptor.invoke(Object, Object...) line: 103
IDispatchImpl.callMethod(CompilingClassLoader, Object,
Variant[], MethodAdaptor) line: 126
IDispatchProxy.invoke(int, int, Variant[]) line: 155
IDispatchProxy(IDispatchImpl).Invoke(int, int, int, int,
int, int, int, int) line: 294
IDispatchProxy(IDispatchImpl).method6(int[]) line: 194
COMObject.callback6(int[]) line: 117
COM.VtblCall(int, int, int, GUID, int, int, DISPPARAMS,
int, EXCEPINFO, int[]) line: not available [native method]
IDispatch.Invoke(int, GUID, int, int, DISPPARAMS, int,
EXCEPINFO, int[]) line: 64
OleAutomation.invoke(int, int, Variant[], int[], Variant)
line: 493
OleAutomation.invoke(int, Variant[]) line: 417
ModuleSpaceIE6.doInvokeOnWindow(OleAutomation, String,
Variant[]) line: 68
ModuleSpaceIE6.doInvoke(String, Object, Class<?>[], Object
[]) line: 153
ModuleSpaceIE6(ModuleSpace).invokeNative(String, Object,
Class<?>[], Object[]) line: 453
ModuleSpaceIE6(ModuleSpace).invokeNativeInt(String,
Object, Class<?>[], Object[]) line: 207
JavaScriptHost.invokeNativeInt(String, Object, Class<?>[],
Object[]) line: 75
Element$.getOffsetHeight$(Element) line: not available
El.getHeight(boolean) line: 984
TreeGridView(BufferView).getVisibleRowCount() line:
313
TreeGridView(BufferView).doRender(List<ColumnData>,
List<ModelData>, int, int, boolean, boolean) line: 189
TreeGridView(BufferView).doRender(List<ColumnData>,
List<ModelData>, int, int, boolean) line: 181
TreeGridView(GridView).renderRows(int, int) line: 1559
TreeGridView(GridView).insertRows(ListStore<ModelData>,
int, int, boolean) line: 1242
TreeGridView(GridView).onAdd(ListStore<ModelData>,
List<ModelData>, int) line: 1293
GridView$5.storeAdd(StoreEvent<ModelData>) line: 1179
GridView$5(StoreListener<M>).handleEvent(StoreEvent<M>)
line: 22
GridView$5(StoreListener<M>).handleEvent(BaseEvent) line:
1
TreeGrid$2(BaseObservable).callListener
(Listener<BaseEvent>, BaseEvent) line: 176
TreeGrid$2(BaseObservable).fireEvent(EventType, BaseEvent)
line: 96
TreeGrid$2(ListStore<M>).insert(List<? extends M>, int,
boolean) line: 467
TreeGrid$2(ListStore<M>).insert(List<? extends M>, int)
line: 266
TreeGrid<M>.onAdd(TreeStoreEvent<M>) line: 430
TreeGrid$1.storeAdd(StoreEvent<M>) line: 123
TreeGrid$1(StoreListener<M>).handleEvent(StoreEvent<M>)
line: 22
TreeGrid$1(StoreListener<M>).handleEvent(BaseEvent) line:
1
TreeStore<M>(BaseObservable).callListener
(Listener<BaseEvent>, BaseEvent) line: 176
TreeStore<M>(BaseObservable).fireEvent(EventType,
BaseEvent) line: 96
TreeStore<M>.doInsert(TreeModel, List<TreeModel>, int,
boolean, boolean) line: 799
TreeStore<M>.insert(List<M>, int, boolean) line: 493
TreeStore<M>.add(List<M>, boolean) line: 163
TreeStore<M>.add(M, boolean) line: 174
PnlClientFactory.populatePnlDataTreeStore
(AggregateStringGWTTable, TreeStore<BaseModel>) line: 42
MainPage$9(MainPage
$MainPnlSummaryTablesAsyncCallback).onSuccess
(GWTPair<AggregateStringGWTTable,AggregateStringGWTTable>) line:
403
MainPage$9(MainPage
$MainPnlSummaryTablesAsyncCallback).onSuccess(Object) line: 1
RequestCallbackAdapter<T>.onResponseReceived(Request,
Response) line: 215
Request.fireOnResponseReceivedImpl(RequestCallback) line:
264
Request.fireOnResponseReceivedAndCatch(GWT
$UncaughtExceptionHandler, RequestCallback) line: 236
Request.fireOnResponseReceived(RequestCallback) line:
227
NativeMethodAccessorImpl.invoke0(Method, Object, Object[])
line: not available [native method] [local variables unavailable]
NativeMethodAccessorImpl.invoke(Object, Object[]) line:
39
DelegatingMethodAccessorImpl.invoke(Object, Object[])
line: 25
Method.invoke(Object, Object...) line: 597
MethodAdaptor.invoke(Object, Object...) line: 103
IDispatchImpl.callMethod(CompilingClassLoader, Object,
Variant[], MethodAdaptor) line: 126
IDispatchProxy.invoke(int, int, Variant[]) line: 155
IDispatchProxy(IDispatchImpl).Invoke(int, int, int, int,
int, int, int, int) line: 294
IDispatchProxy(IDispatchImpl).method6(int[]) line: 194
COMObject.callback6(int[]) line: 117
OS.DispatchMessageW(MSG) line: not available [native
method]
OS.DispatchMessage(MSG) line: 1925
Display.readAndDispatch() line: 2966
HostedMode(SwtHostedModeBase).processEvents() line:
235
HostedMode(HostedModeBase).pumpEventLoop() line: 558
HostedMode(HostedModeBase).run() line: 405
HostedMode.main(String[]) line: 232
C:\Program Files\Java\jdk1.6.0_06\bin\javaw.exe (Jul 29, 2009
2:11:16 PM)
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