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// Copyright 2015 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_BROWSER_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_
#define CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_
#include <set>
#include <utility>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "content/browser/wake_lock/wake_lock_service_impl.h"
#include "content/common/content_export.h"
#include "content/public/browser/web_contents_observer.h"
#include "mojo/public/cpp/bindings/interface_request.h"
namespace content {
class PowerSaveBlocker;
class RenderFrameHost;
class WebContents;
class CONTENT_EXPORT WakeLockServiceContext : public WebContentsObserver {
public:
explicit WakeLockServiceContext(WebContents* web_contents);
~WakeLockServiceContext() override;
// Creates a WakeLockServiceImpl that is strongly bound to |request|.
void CreateService(int render_process_id,
int render_frame_id,
mojo::InterfaceRequest<WakeLockService> request);
// WebContentsObserver implementation.
void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
// Requests wake lock for RenderFrame identified by |render_process_id| and
// |render_frame_id|.
void RequestWakeLock(int render_process_id, int render_frame_id);
// Cancels wake lock request for RenderFrame identified by
// |render_process_id| and |render_frame_id|.
void CancelWakeLock(int render_process_id, int render_frame_id);
// Used by tests.
bool HasWakeLockForTests() const;
private:
void CreateWakeLock();
void RemoveWakeLock();
void UpdateWakeLock();
// Set of (render_process_id, render_frame_id) pairs identifying all
// RenderFrames requesting wake lock.
std::set<std::pair<int, int>> frames_requesting_lock_;
// The actual power save blocker for screen.
scoped_ptr<PowerSaveBlocker> wake_lock_;
base::WeakPtrFactory<WakeLockServiceContext> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(WakeLockServiceContext);
};
} // namespace content
#endif // CONTENT_BROWSER_WAKE_LOCK_WAKE_LOCK_SERVICE_CONTEXT_H_
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