Source/modules/device_orientation/DeviceSensorEventDispatcher.cpp - Issue 191003009: Move DeviceSensorEvent* h|cpp files to a common module

Side by Side Diff: Source/modules/device_orientation/DeviceSensorEventDispatcher.cpp

Issue 191003009: Move DeviceSensorEvent* h|cpp files to a common module (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master

Patch Set: Adam's comment: no new dir required Created 6 years, 9 months ago

Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.

Jump to:

View unified diff | Download patch

OLD	NEW
	(Empty)
1 /*

2 * Copyright (C) 2013 Google Inc. All rights reserved.

3 *

4 * Redistribution and use in source and binary forms, with or without

5 * modification, are permitted provided that the following conditions are

6 * met:

7 *

8 * * Redistributions of source code must retain the above copyright

9 * notice, this list of conditions and the following disclaimer.

10 * * Redistributions in binary form must reproduce the above

11 * copyright notice, this list of conditions and the following disclaimer

12 * in the documentation and/or other materials provided with the

13 * distribution.

14 * * Neither the name of Google Inc. nor the names of its

15 * contributors may be used to endorse or promote products derived from

16 * this software without specific prior written permission.

17 *

18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

29 */

30

31 #include "config.h"

32 #include "modules/device_orientation/DeviceSensorEventDispatcher.h"

33

34 namespace WebCore {

35

36 DeviceSensorEventDispatcher::DeviceSensorEventDispatcher()

37 : m_needsPurge(false)

38 , m_isDispatching(false)

39 {

40 }

41

42 DeviceSensorEventDispatcher::~DeviceSensorEventDispatcher()

43 {

44 }

45

46 void DeviceSensorEventDispatcher::addController(DeviceSensorEventController* con troller)

47 {

48 bool wasEmpty = m_controllers.isEmpty();

49 if (!m_controllers.contains(controller))

50 m_controllers.append(controller);

51 if (wasEmpty)

52 startListening();

53 }

54

55 void DeviceSensorEventDispatcher::removeController(DeviceSensorEventController* controller)

56 {

57 // Do not actually remove the controller from the vector, instead zero them out.

58 // The zeros are removed in these two cases:

59 // 1. either immediately if we are not dispatching any events,

60 // 2. or after didChangeDeviceMotion/Orientation has dispatched all events.

61 // This is to correctly handle the re-entrancy case when a controller is des troyed

62 // while in the didChangeDeviceMotion/Orientation method.

63 size_t index = m_controllers.find(controller);

64 if (index == kNotFound)

65 return;

66

67 m_controllers[index] = 0;

68 m_needsPurge = true;

69

70 if (!m_isDispatching)

71 purgeControllers();

72 }

73

74 void DeviceSensorEventDispatcher::purgeControllers()

75 {

76 ASSERT(m_needsPurge);

77

78 size_t i = 0;

79 while (i < m_controllers.size()) {

80 if (!m_controllers[i]) {

81 m_controllers[i] = m_controllers.last();

82 m_controllers.removeLast();

83 } else {

84 ++i;

85 }

86 }

87

88 m_needsPurge = false;

89

90 if (m_controllers.isEmpty())

91 stopListening();

92 }

93

94 } // namespace WebCore

OLD	NEW