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Bug 583923 - 'IndexedDB: Don't fire events if there are no listeners for it'. r=sicking.

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This commit is contained in:
Ben Turner 2010-08-04 14:44:28 -07:00
parent 20fdbdcaa8
commit e5a07dae46
1 changed files with 11 additions and 0 deletions
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11
dom/indexedDB/AsyncConnectionHelper.cpp
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@ -313,6 +313,17 @@ AsyncConnectionHelper::OnSuccess(nsIDOMEventTarget* aTarget)
return result;
}
// Check to make sure we have a listener here before actually firing.
nsCOMPtr<nsPIDOMEventTarget> target(do_QueryInterface(aTarget));
if (target) {
nsIEventListenerManager* manager = target->GetListenerManager(PR_FALSE);
if (!manager ||
!manager->HasListenersFor(NS_LITERAL_STRING(SUCCESS_EVT_STR))) {
// No listeners here, skip creating and dispatching the event.
return OK;
}
}
if (NS_FAILED(variant->SetWritable(PR_FALSE))) {
NS_ERROR("Failed to make variant readonly!");
return nsIIDBDatabaseException::UNKNOWN_ERR;