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-rw-r--r--embedding/components/appstartup/nsAppStartupNotifier.cpp90
1 files changed, 90 insertions, 0 deletions
diff --git a/embedding/components/appstartup/nsAppStartupNotifier.cpp b/embedding/components/appstartup/nsAppStartupNotifier.cpp
new file mode 100644
index 000000000..4ef38fb8d
--- /dev/null
+++ b/embedding/components/appstartup/nsAppStartupNotifier.cpp
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsCOMPtr.h"
+#include "nsString.h"
+#include "nsXPIDLString.h"
+#include "nsIServiceManager.h"
+#include "nsICategoryManager.h"
+#include "nsXPCOM.h"
+#include "nsISupportsPrimitives.h"
+#include "nsAppStartupNotifier.h"
+#include "nsISimpleEnumerator.h"
+
+NS_IMPL_ISUPPORTS(nsAppStartupNotifier, nsIObserver)
+
+nsAppStartupNotifier::nsAppStartupNotifier()
+{
+}
+
+nsAppStartupNotifier::~nsAppStartupNotifier()
+{
+}
+
+NS_IMETHODIMP nsAppStartupNotifier::Observe(nsISupports *aSubject, const char *aTopic, const char16_t *someData)
+{
+ NS_ENSURE_ARG(aTopic);
+ nsresult rv;
+
+ // now initialize all startup listeners
+ nsCOMPtr<nsICategoryManager> categoryManager =
+ do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsCOMPtr<nsISimpleEnumerator> enumerator;
+ rv = categoryManager->EnumerateCategory(aTopic,
+ getter_AddRefs(enumerator));
+ if (NS_FAILED(rv)) return rv;
+
+ nsCOMPtr<nsISupports> entry;
+ while (NS_SUCCEEDED(enumerator->GetNext(getter_AddRefs(entry)))) {
+ nsCOMPtr<nsISupportsCString> category = do_QueryInterface(entry, &rv);
+
+ if (NS_SUCCEEDED(rv)) {
+ nsAutoCString categoryEntry;
+ rv = category->GetData(categoryEntry);
+
+ nsXPIDLCString contractId;
+ categoryManager->GetCategoryEntry(aTopic,
+ categoryEntry.get(),
+ getter_Copies(contractId));
+
+ if (NS_SUCCEEDED(rv)) {
+
+ // If we see the word "service," in the beginning
+ // of the contractId then we create it as a service
+ // if not we do a createInstance
+
+ nsCOMPtr<nsISupports> startupInstance;
+ if (Substring(contractId, 0, 8).EqualsLiteral("service,"))
+ startupInstance = do_GetService(contractId.get() + 8, &rv);
+ else
+ startupInstance = do_CreateInstance(contractId, &rv);
+
+ if (NS_SUCCEEDED(rv)) {
+ // Try to QI to nsIObserver
+ nsCOMPtr<nsIObserver> startupObserver =
+ do_QueryInterface(startupInstance, &rv);
+ if (NS_SUCCEEDED(rv)) {
+ rv = startupObserver->Observe(nullptr, aTopic, nullptr);
+
+ // mainly for debugging if you want to know if your observer worked.
+ NS_ASSERTION(NS_SUCCEEDED(rv), "Startup Observer failed!\n");
+ }
+ }
+ else {
+ #ifdef DEBUG
+ nsAutoCString warnStr("Cannot create startup observer : ");
+ warnStr += contractId.get();
+ NS_WARNING(warnStr.get());
+ #endif
+ }
+
+ }
+ }
+ }
+
+ return NS_OK;
+}