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27 #include "modules/gamepad/NavigatorGamepad.h"
29 #include "core/dom/Document.h"
30 #include "core/frame/LocalDOMWindow.h"
31 #include "core/frame/LocalFrame.h"
32 #include "core/frame/Navigator.h"
33 #include "core/page/Page.h"
34 #include "modules/gamepad/GamepadDispatcher.h"
35 #include "modules/gamepad/GamepadEvent.h"
36 #include "modules/gamepad/GamepadList.h"
37 #include "modules/gamepad/WebKitGamepadList.h"
42 static void sampleGamepad(unsigned index, T& gamepad, const WebGamepad& webGamepad)
44 gamepad.setId(webGamepad.id);
45 gamepad.setIndex(index);
46 gamepad.setConnected(webGamepad.connected);
47 gamepad.setTimestamp(webGamepad.timestamp);
48 gamepad.setMapping(webGamepad.mapping);
49 gamepad.setAxes(webGamepad.axesLength, webGamepad.axes);
50 gamepad.setButtons(webGamepad.buttonsLength, webGamepad.buttons);
53 template<typename GamepadType, typename ListType>
54 static void sampleGamepads(ListType* into)
58 GamepadDispatcher::instance().sampleGamepads(gamepads);
60 for (unsigned i = 0; i < WebGamepads::itemsLengthCap; ++i) {
61 WebGamepad& webGamepad = gamepads.items[i];
62 if (i < gamepads.length && webGamepad.connected) {
63 GamepadType* gamepad = into->item(i);
65 gamepad = GamepadType::create();
66 sampleGamepad(i, *gamepad, webGamepad);
67 into->set(i, gamepad);
74 NavigatorGamepad* NavigatorGamepad::from(Document& document)
76 if (!document.frame() || !document.frame()->domWindow())
78 Navigator& navigator = *document.frame()->domWindow()->navigator();
79 return &from(navigator);
82 NavigatorGamepad& NavigatorGamepad::from(Navigator& navigator)
84 NavigatorGamepad* supplement = static_cast<NavigatorGamepad*>(WillBeHeapSupplement<Navigator>::from(navigator, supplementName()));
86 supplement = new NavigatorGamepad(navigator.frame());
87 provideTo(navigator, supplementName(), adoptPtrWillBeNoop(supplement));
92 WebKitGamepadList* NavigatorGamepad::webkitGetGamepads(Navigator& navigator)
94 return NavigatorGamepad::from(navigator).webkitGamepads();
97 GamepadList* NavigatorGamepad::getGamepads(Navigator& navigator)
99 return NavigatorGamepad::from(navigator).gamepads();
102 WebKitGamepadList* NavigatorGamepad::webkitGamepads()
104 if (!m_webkitGamepads)
105 m_webkitGamepads = WebKitGamepadList::create();
108 sampleGamepads<WebKitGamepad>(m_webkitGamepads.get());
110 return m_webkitGamepads.get();
113 GamepadList* NavigatorGamepad::gamepads()
116 m_gamepads = GamepadList::create();
119 sampleGamepads<Gamepad>(m_gamepads.get());
121 return m_gamepads.get();
124 void NavigatorGamepad::trace(Visitor* visitor)
126 visitor->trace(m_gamepads);
127 visitor->trace(m_webkitGamepads);
128 visitor->trace(m_pendingEvents);
129 WillBeHeapSupplement<Navigator>::trace(visitor);
130 DOMWindowProperty::trace(visitor);
131 PlatformEventController::trace(visitor);
134 void NavigatorGamepad::didUpdateData()
136 // We should stop listening once we detached.
139 // We register to the dispatcher before sampling gamepads so we need to check if we actually have an event listener.
140 if (!m_hasEventListener)
143 if (window()->document()->activeDOMObjectsAreStopped() || window()->document()->activeDOMObjectsAreSuspended())
146 const GamepadDispatcher::ConnectionChange& change = GamepadDispatcher::instance().latestConnectionChange();
149 m_gamepads = GamepadList::create();
151 Gamepad* gamepad = m_gamepads->item(change.index);
153 gamepad = Gamepad::create();
154 sampleGamepad(change.index, *gamepad, change.pad);
155 m_gamepads->set(change.index, gamepad);
157 m_pendingEvents.append(gamepad);
158 m_dispatchOneEventRunner.runAsync();
161 void NavigatorGamepad::dispatchOneEvent()
164 ASSERT(!m_pendingEvents.isEmpty());
166 Gamepad* gamepad = m_pendingEvents.takeFirst();
167 const AtomicString& eventName = gamepad->connected() ? EventTypeNames::gamepadconnected : EventTypeNames::gamepaddisconnected;
168 window()->dispatchEvent(GamepadEvent::create(eventName, false, true, gamepad));
170 if (!m_pendingEvents.isEmpty())
171 m_dispatchOneEventRunner.runAsync();
174 NavigatorGamepad::NavigatorGamepad(LocalFrame* frame)
175 : DOMWindowProperty(frame)
176 , PlatformEventController(frame ? frame->page() : 0)
177 , DOMWindowLifecycleObserver(frame ? frame->domWindow() : 0)
178 , m_dispatchOneEventRunner(this, &NavigatorGamepad::dispatchOneEvent)
182 NavigatorGamepad::~NavigatorGamepad()
186 const char* NavigatorGamepad::supplementName()
188 return "NavigatorGamepad";
191 void NavigatorGamepad::willDestroyGlobalObjectInFrame()
194 DOMWindowProperty::willDestroyGlobalObjectInFrame();
197 void NavigatorGamepad::willDetachGlobalObjectFromFrame()
200 DOMWindowProperty::willDetachGlobalObjectFromFrame();
203 void NavigatorGamepad::registerWithDispatcher()
205 GamepadDispatcher::instance().addController(this);
206 m_dispatchOneEventRunner.resume();
209 void NavigatorGamepad::unregisterWithDispatcher()
211 m_dispatchOneEventRunner.suspend();
212 GamepadDispatcher::instance().removeController(this);
215 bool NavigatorGamepad::hasLastData()
217 // Gamepad data is polled instead of pushed.
221 static bool isGamepadEvent(const AtomicString& eventType)
223 return eventType == EventTypeNames::gamepadconnected || eventType == EventTypeNames::gamepaddisconnected;
226 void NavigatorGamepad::didAddEventListener(LocalDOMWindow*, const AtomicString& eventType)
228 if (isGamepadEvent(eventType)) {
229 if (page() && page()->visibilityState() == PageVisibilityStateVisible)
231 m_hasEventListener = true;
235 void NavigatorGamepad::didRemoveEventListener(LocalDOMWindow* window, const AtomicString& eventType)
237 if (isGamepadEvent(eventType)
238 && !window->hasEventListeners(EventTypeNames::gamepadconnected)
239 && !window->hasEventListeners(EventTypeNames::gamepaddisconnected)) {
240 didRemoveGamepadEventListeners();
244 void NavigatorGamepad::didRemoveAllEventListeners(LocalDOMWindow*)
246 didRemoveGamepadEventListeners();
249 void NavigatorGamepad::didRemoveGamepadEventListeners()
251 m_hasEventListener = false;
252 m_dispatchOneEventRunner.stop();
253 m_pendingEvents.clear();
256 void NavigatorGamepad::pageVisibilityChanged()
258 // Inform the embedder whether it needs to provide gamepad data for us.
259 bool visible = page()->visibilityState() == PageVisibilityStateVisible;
260 if (visible && (m_hasEventListener || m_gamepads || m_webkitGamepads))
265 if (!visible || !m_hasEventListener)
268 // Tell the page what has changed. m_gamepads contains the state before we became hidden.
269 // We create a new snapshot and compare them.
270 GamepadList* oldGamepads = m_gamepads.release();
272 GamepadList* newGamepads = m_gamepads.get();
275 for (unsigned i = 0; i < WebGamepads::itemsLengthCap; ++i) {
276 Gamepad* oldGamepad = oldGamepads ? oldGamepads->item(i) : 0;
277 Gamepad* newGamepad = newGamepads->item(i);
278 bool oldWasConnected = oldGamepad && oldGamepad->connected();
279 bool newIsConnected = newGamepad && newGamepad->connected();
280 bool connectedGamepadChanged = oldWasConnected && newIsConnected && oldGamepad->id() != newGamepad->id();
281 if (connectedGamepadChanged || (oldWasConnected && !newIsConnected)) {
282 oldGamepad->setConnected(false);
283 m_pendingEvents.append(oldGamepad);
285 if (connectedGamepadChanged || (!oldWasConnected && newIsConnected)) {
286 m_pendingEvents.append(newGamepad);
290 if (!m_pendingEvents.isEmpty())
291 m_dispatchOneEventRunner.runAsync();