1 files changed, 64 insertions, 0 deletions
diff --git a/widget/windows/nsAppShell.h b/widget/windows/nsAppShell.h
new file mode 100644
index 0000000000..e9bc87a366
--- /dev/null
+++ b/widget/windows/nsAppShell.h
@@ -0,0 +1,64 @@
+/* -*- 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 nsAppShell_h__
+#define nsAppShell_h__
+
+#include "nsBaseAppShell.h"
+#include <windows.h>
+#include <vector>
+#include "mozilla/TimeStamp.h"
+#include "mozilla/Mutex.h"
+
+// The maximum time we allow before forcing a native event callback.
+// In seconds.
+#define NATIVE_EVENT_STARVATION_LIMIT 1
+
+/**
+ * Native Win32 Application shell wrapper
+ */
+class nsAppShell : public nsBaseAppShell {
+ public:
+  nsAppShell()
+      : mEventWnd(nullptr),
+        mNativeCallbackPending(false),
+        mLastNativeEventScheduledMutex(
+            "nsAppShell::mLastNativeEventScheduledMutex") {}
+  typedef mozilla::TimeStamp TimeStamp;
+  typedef mozilla::Mutex Mutex;
+
+  nsresult Init();
+  void DoProcessMoreGeckoEvents();
+
+  static UINT GetTaskbarButtonCreatedMessage();
+
+  NS_IMETHOD AfterProcessNextEvent(nsIThreadInternal* thread,
+                                   bool eventWasProcessed) final;
+
+ protected:
+  NS_IMETHOD Run() override;
+  NS_IMETHOD Exit() override;
+  NS_IMETHOD Observe(nsISupports* aSubject, const char* aTopic,
+                     const char16_t* aData) override;
+
+  virtual void ScheduleNativeEventCallback();
+  virtual bool ProcessNextNativeEvent(bool mayWait);
+  virtual ~nsAppShell();
+
+  static LRESULT CALLBACK EventWindowProc(HWND, UINT, WPARAM, LPARAM);
+
+ protected:
+  HWND mEventWnd;
+  bool mNativeCallbackPending;
+
+  Mutex mLastNativeEventScheduledMutex MOZ_UNANNOTATED;
+  TimeStamp mLastNativeEventScheduled;
+  std::vector<MSG> mMsgsToRepost;
+
+ private:
+  wchar_t mTimezoneName[128];
+};
+
+#endif  // nsAppShell_h__