1 files changed, 65 insertions, 0 deletions
diff --git a/chromium/content/renderer/screen_orientation/screen_orientation_dispatcher.h b/chromium/content/renderer/screen_orientation/screen_orientation_dispatcher.h
new file mode 100644
index 00000000000..d64fda1514f
--- /dev/null
+++ b/chromium/content/renderer/screen_orientation/screen_orientation_dispatcher.h
@@ -0,0 +1,65 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_RENDERER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_H_
+#define CONTENT_RENDERER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_H_
+
+#include "base/compiler_specific.h"
+#include "base/id_map.h"
+#include "base/macros.h"
+#include "content/public/renderer/render_frame_observer.h"
+#include "third_party/WebKit/public/platform/WebLockOrientationCallback.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientationClient.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientationLockType.h"
+#include "third_party/WebKit/public/platform/WebScreenOrientationType.h"
+
+namespace content {
+
+class RenderFrame;
+
+// ScreenOrientationDispatcher implements the WebScreenOrientationClient API
+// which handles screen lock. It sends lock (or unlock) requests to the browser
+// process and listens for responses and let Blink know about the result of the
+// request via WebLockOrientationCallback.
+class CONTENT_EXPORT ScreenOrientationDispatcher :
+    public RenderFrameObserver,
+    NON_EXPORTED_BASE(public blink::WebScreenOrientationClient) {
+ public:
+  explicit ScreenOrientationDispatcher(RenderFrame* render_frame);
+  virtual ~ScreenOrientationDispatcher();
+
+ private:
+  friend class ScreenOrientationDispatcherTest;
+
+  // RenderFrameObserver implementation.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // blink::WebScreenOrientationClient implementation.
+  virtual void lockOrientation(
+      blink::WebScreenOrientationLockType orientation,
+      blink::WebLockOrientationCallback* callback) OVERRIDE;
+  virtual void unlockOrientation() OVERRIDE;
+
+  void OnLockSuccess(int request_id,
+                     unsigned angle,
+                     blink::WebScreenOrientationType orientation);
+  void OnLockError(int request_id,
+                   blink::WebLockOrientationCallback::ErrorType error);
+
+  void CancelPendingLocks();
+
+  // The pending_callbacks_ map is mostly meant to have a unique ID to associate
+  // with every callback going trough the dispatcher. The map will own the
+  // pointer in the sense that it will destroy it when Remove() will be called.
+  // Furthermore, we only expect to have one callback at a time in this map,
+  // which is what IDMap was designed for.
+  typedef IDMap<blink::WebLockOrientationCallback, IDMapOwnPointer> CallbackMap;
+  CallbackMap pending_callbacks_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenOrientationDispatcher);
+};
+
+}  // namespace content
+
+#endif // CONTENT_RENDERER_SCREEN_ORIENTATION_SCREEN_ORIENTATION_DISPATCHER_H_