summaryrefslogtreecommitdiffstats
path: root/widget/nsAppShellSingleton.h
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /widget/nsAppShellSingleton.h
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'widget/nsAppShellSingleton.h')
-rw-r--r--widget/nsAppShellSingleton.h60
1 files changed, 60 insertions, 0 deletions
diff --git a/widget/nsAppShellSingleton.h b/widget/nsAppShellSingleton.h
new file mode 100644
index 0000000000..cd554951c6
--- /dev/null
+++ b/widget/nsAppShellSingleton.h
@@ -0,0 +1,60 @@
+/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
+/* 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/. */
+
+#ifndef nsAppShellSingleton_h__
+#define nsAppShellSingleton_h__
+
+/**
+ * This file is designed to be included into the file that provides the
+ * XPCOM module implementation for a particular widget toolkit.
+ *
+ * The following functions are defined:
+ * nsAppShellInit
+ * nsAppShellShutdown
+ * nsAppShellConstructor
+ *
+ * The nsAppShellInit function is designed to be used as a module constructor.
+ * If you already have a module constructor, then call nsAppShellInit from your
+ * module constructor.
+ *
+ * The nsAppShellShutdown function is designed to be used as a module
+ * destructor. If you already have a module destructor, then call
+ * nsAppShellShutdown from your module destructor.
+ *
+ * The nsAppShellConstructor function is designed to be used as a factory
+ * method for the nsAppShell class.
+ */
+
+#include "nsXULAppAPI.h"
+
+static nsIAppShell* sAppShell;
+
+static nsresult nsAppShellInit() {
+ NS_ASSERTION(!sAppShell, "already initialized");
+
+ sAppShell = new nsAppShell();
+ if (!sAppShell) return NS_ERROR_OUT_OF_MEMORY;
+ NS_ADDREF(sAppShell);
+
+ nsresult rv = static_cast<nsAppShell*>(sAppShell)->Init();
+ // If we somehow failed to initialize the appshell, it's extremely likely
+ // that we are sufficiently hosed that continuing on is just going to lead
+ // to bad things later. By crashing early here, the crash report will
+ // potentially contain a little more insight into what's going wrong than
+ // if we waited for a crash further down the line. See also bug 1545381.
+ MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+
+ return NS_OK;
+}
+
+static void nsAppShellShutdown() { NS_RELEASE(sAppShell); }
+
+nsresult nsAppShellConstructor(const nsIID& iid, void** result) {
+ NS_ENSURE_TRUE(sAppShell, NS_ERROR_NOT_INITIALIZED);
+
+ return sAppShell->QueryInterface(iid, result);
+}
+
+#endif // nsAppShellSingleton_h__