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comparison: embedding/components/appstartup/src/nsAppStartupNotifier.cpp
embedding/components/appstartup/src/nsAppStartupNotifier.cpp
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| -1:000000000000 | 0:609e790e02b8 |
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| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #include "nsCOMPtr.h" | |
| 7 #include "nsString.h" | |
| 8 #include "nsXPIDLString.h" | |
| 9 #include "nsIServiceManager.h" | |
| 10 #include "nsICategoryManager.h" | |
| 11 #include "nsXPCOM.h" | |
| 12 #include "nsISupportsPrimitives.h" | |
| 13 #include "nsAppStartupNotifier.h" | |
| 14 #include "nsISimpleEnumerator.h" | |
| 15 | |
| 16 NS_IMPL_ISUPPORTS(nsAppStartupNotifier, nsIObserver) | |
| 17 | |
| 18 nsAppStartupNotifier::nsAppStartupNotifier() | |
| 19 { | |
| 20 } | |
| 21 | |
| 22 nsAppStartupNotifier::~nsAppStartupNotifier() | |
| 23 { | |
| 24 } | |
| 25 | |
| 26 NS_IMETHODIMP nsAppStartupNotifier::Observe(nsISupports *aSubject, const char *aTopic, const char16_t *someData) | |
| 27 { | |
| 28 NS_ENSURE_ARG(aTopic); | |
| 29 nsresult rv; | |
| 30 | |
| 31 // now initialize all startup listeners | |
| 32 nsCOMPtr<nsICategoryManager> categoryManager = | |
| 33 do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv); | |
| 34 NS_ENSURE_SUCCESS(rv, rv); | |
| 35 | |
| 36 nsCOMPtr<nsISimpleEnumerator> enumerator; | |
| 37 rv = categoryManager->EnumerateCategory(aTopic, | |
| 38 getter_AddRefs(enumerator)); | |
| 39 if (NS_FAILED(rv)) return rv; | |
| 40 | |
| 41 nsCOMPtr<nsISupports> entry; | |
| 42 while (NS_SUCCEEDED(enumerator->GetNext(getter_AddRefs(entry)))) { | |
| 43 nsCOMPtr<nsISupportsCString> category = do_QueryInterface(entry, &rv); | |
| 44 | |
| 45 if (NS_SUCCEEDED(rv)) { | |
| 46 nsAutoCString categoryEntry; | |
| 47 rv = category->GetData(categoryEntry); | |
| 48 | |
| 49 nsXPIDLCString contractId; | |
| 50 categoryManager->GetCategoryEntry(aTopic, | |
| 51 categoryEntry.get(), | |
| 52 getter_Copies(contractId)); | |
| 53 | |
| 54 if (NS_SUCCEEDED(rv)) { | |
| 55 | |
| 56 // If we see the word "service," in the beginning | |
| 57 // of the contractId then we create it as a service | |
| 58 // if not we do a createInstance | |
| 59 | |
| 60 nsCOMPtr<nsISupports> startupInstance; | |
| 61 if (Substring(contractId, 0, 8).EqualsLiteral("service,")) | |
| 62 startupInstance = do_GetService(contractId.get() + 8, &rv); | |
| 63 else | |
| 64 startupInstance = do_CreateInstance(contractId, &rv); | |
| 65 | |
| 66 if (NS_SUCCEEDED(rv)) { | |
| 67 // Try to QI to nsIObserver | |
| 68 nsCOMPtr<nsIObserver> startupObserver = | |
| 69 do_QueryInterface(startupInstance, &rv); | |
| 70 if (NS_SUCCEEDED(rv)) { | |
| 71 rv = startupObserver->Observe(nullptr, aTopic, nullptr); | |
| 72 | |
| 73 // mainly for debugging if you want to know if your observer worked. | |
| 74 NS_ASSERTION(NS_SUCCEEDED(rv), "Startup Observer failed!\n"); | |
| 75 } | |
| 76 } | |
| 77 else { | |
| 78 #ifdef DEBUG | |
| 79 nsAutoCString warnStr("Cannot create startup observer : "); | |
| 80 warnStr += contractId.get(); | |
| 81 NS_WARNING(warnStr.get()); | |
| 82 #endif | |
| 83 } | |
| 84 | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 return NS_OK; | |
| 90 } |
