content/browser/screen_orientation/screen_orientation_listener_android.cc - Issue 2688383002: [ScreenOrientation] Merge mojo interface ScreenOrientationListener into ScreenOrientation

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Side by Side Diff: content/browser/screen_orientation/screen_orientation_listener_android.cc

Issue 2688383002: [ScreenOrientation] Merge mojo interface ScreenOrientationListener into ScreenOrientation

Patch Set: Created 3 years, 10 months ago

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1 // Copyright 2014 The Chromium Authors. All rights reserved.

2 // Use of this source code is governed by a BSD-style license that can be

3 // found in the LICENSE file.

4

5 #include "content/browser/screen_orientation/screen_orientation_listener_android .h"

6

7 #include "base/message_loop/message_loop.h"

8 #include "content/browser/screen_orientation/screen_orientation_delegate_android .h"

9 #include "content/common/screen_orientation_messages.h"

10

11 namespace content {

12

13 ScreenOrientationListenerAndroid::ScreenOrientationListenerAndroid()

14 : BrowserMessageFilter(ScreenOrientationMsgStart),

15 BrowserAssociatedInterface<device::mojom::ScreenOrientationListener>(

16 this,

17 this),

18 listeners_count_(0) {}

19

20 ScreenOrientationListenerAndroid::~ScreenOrientationListenerAndroid() {

21 DCHECK(base::MessageLoopForIO::IsCurrent());

22 if (listeners_count_ > 0)

23 ScreenOrientationDelegateAndroid::StopAccurateListening();

24 }

25

26 bool ScreenOrientationListenerAndroid::OnMessageReceived(

27 const IPC::Message& message) {

28 return false;

29 }

30

31 void ScreenOrientationListenerAndroid::Start() {

32 DCHECK(base::MessageLoopForIO::IsCurrent());

33 ++listeners_count_;

34 if (listeners_count_ == 1)

35 ScreenOrientationDelegateAndroid::StartAccurateListening();

36 }

37

38 void ScreenOrientationListenerAndroid::Stop() {

39 DCHECK(base::MessageLoopForIO::IsCurrent());

40 DCHECK(listeners_count_ > 0);

41 --listeners_count_;

42 if (listeners_count_ == 0)

43 ScreenOrientationDelegateAndroid::StopAccurateListening();

44 }

45

46 } // namespace content

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