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| 1 /* | |
| 2 * Copyright 2010 Apple Inc. All rights reserved. | |
| 3 * Copyright (C) 2012 Samsung Electronics. All rights reserved. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 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 copyright | |
| 11 * notice, this list of conditions and the following disclaimer in the | |
| 12 * documentation and/or other materials provided with the distribution. | |
| 13 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 */ | |
| 26 | |
| 27 #include "config.h" | |
| 28 #include "modules/device_orientation/DeviceSensorEventController.h" | |
| 29 | |
| 30 #include "core/dom/Document.h" | |
| 31 #include "core/frame/DOMWindow.h" | |
| 32 #include "core/page/Page.h" | |
| 33 | |
| 34 namespace WebCore { | |
| 35 | |
| 36 DeviceSensorEventController::DeviceSensorEventController(Document& document) | |
| 37 : PageLifecycleObserver(document.page()) | |
| 38 , m_hasEventListener(false) | |
| 39 , m_document(document) | |
| 40 , m_isActive(false) | |
| 41 , m_needsCheckingNullEvents(true) | |
| 42 , m_timer(this, &DeviceSensorEventController::fireDeviceEvent) | |
| 43 { | |
| 44 } | |
| 45 | |
| 46 DeviceSensorEventController::~DeviceSensorEventController() | |
| 47 { | |
| 48 } | |
| 49 | |
| 50 void DeviceSensorEventController::fireDeviceEvent(Timer<DeviceSensorEventControl
ler>* timer) | |
| 51 { | |
| 52 ASSERT_UNUSED(timer, timer == &m_timer); | |
| 53 ASSERT(hasLastData()); | |
| 54 | |
| 55 m_timer.stop(); | |
| 56 dispatchDeviceEvent(getLastEvent()); | |
| 57 } | |
| 58 | |
| 59 void DeviceSensorEventController::dispatchDeviceEvent(PassRefPtr<Event> prpEvent
) | |
| 60 { | |
| 61 RefPtr<Event> event = prpEvent; | |
| 62 if (m_document.domWindow() | |
| 63 && !m_document.activeDOMObjectsAreSuspended() | |
| 64 && !m_document.activeDOMObjectsAreStopped()) | |
| 65 m_document.domWindow()->dispatchEvent(event); | |
| 66 | |
| 67 if (m_needsCheckingNullEvents) { | |
| 68 if (isNullEvent(event.get())) | |
| 69 stopUpdating(); | |
| 70 else | |
| 71 m_needsCheckingNullEvents = false; | |
| 72 } | |
| 73 } | |
| 74 | |
| 75 void DeviceSensorEventController::startUpdating() | |
| 76 { | |
| 77 if (m_isActive) | |
| 78 return; | |
| 79 | |
| 80 if (hasLastData() && !m_timer.isActive()) { | |
| 81 // Make sure to fire the device motion data as soon as possible. | |
| 82 m_timer.startOneShot(0); | |
| 83 } | |
| 84 | |
| 85 registerWithDispatcher(); | |
| 86 m_isActive = true; | |
| 87 } | |
| 88 | |
| 89 void DeviceSensorEventController::stopUpdating() | |
| 90 { | |
| 91 if (!m_isActive) | |
| 92 return; | |
| 93 | |
| 94 if (m_timer.isActive()) | |
| 95 m_timer.stop(); | |
| 96 | |
| 97 unregisterWithDispatcher(); | |
| 98 m_isActive = false; | |
| 99 } | |
| 100 | |
| 101 void DeviceSensorEventController::pageVisibilityChanged() | |
| 102 { | |
| 103 if (!m_hasEventListener) | |
| 104 return; | |
| 105 | |
| 106 if (page()->visibilityState() == PageVisibilityStateVisible) | |
| 107 startUpdating(); | |
| 108 else | |
| 109 stopUpdating(); | |
| 110 } | |
| 111 | |
| 112 } // namespace WebCore | |
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Chromium Code Reviews
Issue 191003009:
Move DeviceSensorEvent* h|cpp files to a common module (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master