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-rw-r--r--widget/nsAppShellSingleton.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/widget/nsAppShellSingleton.h b/widget/nsAppShellSingleton.h
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+++ b/widget/nsAppShellSingleton.h
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+/* -*- 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
+ * nsIModule 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;
+ rv = static_cast<nsAppShell*>(sAppShell)->Init();
+ if (NS_FAILED(rv)) {
+ NS_RELEASE(sAppShell);
+ return rv;
+ }
+
+ return NS_OK;
+}
+
+static void
+nsAppShellShutdown()
+{
+ NS_RELEASE(sAppShell);
+}
+
+static nsresult
+nsAppShellConstructor(nsISupports *outer, const nsIID &iid, void **result)
+{
+ NS_ENSURE_TRUE(!outer, NS_ERROR_NO_AGGREGATION);
+ NS_ENSURE_TRUE(sAppShell, NS_ERROR_NOT_INITIALIZED);
+
+ return sAppShell->QueryInterface(iid, result);
+}
+
+#endif // nsAppShellSingleton_h__