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// 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.
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);
void OnLockError(int request_id,
blink::WebLockOrientationError 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_
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