Implement pointer lock API for out-of-process iframes.

third_party/WebKit/Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 122 matching lines @@
 #include "public/platform/WebScheduler.h"
 #include "public/platform/WebURLRequest.h"
 #include "public/platform/WebVector.h"
 #include "public/platform/WebViewScheduler.h"
 #include "public/web/WebAXObject.h"
 #include "public/web/WebActiveWheelFlingParameters.h"
 #include "public/web/WebAutofillClient.h"
 #include "public/web/WebElement.h"
 #include "public/web/WebFrame.h"
 #include "public/web/WebFrameClient.h"
+#include "public/web/WebFrameWidget.h"
 #include "public/web/WebHitTestResult.h"
 #include "public/web/WebInputElement.h"
 #include "public/web/WebMeaningfulLayout.h"
 #include "public/web/WebMediaPlayerAction.h"
 #include "public/web/WebNode.h"
 #include "public/web/WebPlugin.h"
 #include "public/web/WebPluginAction.h"
 #include "public/web/WebRange.h"
 #include "public/web/WebScopedUserGesture.h"
 #include "public/web/WebSelection.h"
@@ skipping 2010 matching lines @@
             return WebInputEventResult::HandledSuppressed;
     }
 
     // Report the event to be NOT processed by WebKit, so that the browser can handle it appropriately.
     if (m_ignoreInputEvents)
         return WebInputEventResult::NotHandled;
 
     TemporaryChange<const WebInputEvent*> currentEventChange(m_currentInputEvent, &inputEvent);
     UIEventWithKeyState::clearNewTabModifierSetFromIsolatedWorld();
 
-    if (isPointerLocked() && WebInputEvent::isMouseEventType(inputEvent.type)) {
+    bool isPointerLocked = false;

[dcheng, 2016/06/07 05:07:55]

Sigh. One day we won't need this I guess =)

+    if (WebFrameWidget* widget = mainFrameImpl()->frameWidget()) {
+        if (WebWidgetClient* client = widget->client())
+            isPointerLocked = client->isPointerLocked();
+    }
+
+    if (isPointerLocked && WebInputEvent::isMouseEventType(inputEvent.type)) {
         pointerLockMouseEvent(inputEvent);
         return WebInputEventResult::HandledSystem;
     }
 
     if (m_mouseCaptureNode && WebInputEvent::isMouseEventType(inputEvent.type)) {
         TRACE_EVENT1("input", "captured mouse event", "type", inputEvent.type);
         // Save m_mouseCaptureNode since mouseCaptureLost() will clear it.
         Node* node = m_mouseCaptureNode;
 
         // Not all platforms call mouseCaptureLost() directly.
@@ skipping 2252 matching lines @@
 
     if (page())
         m_page->setVisibilityState(static_cast<PageVisibilityState>(static_cast<int>(visibilityState)), isInitialState);
 
     bool visible = visibilityState == WebPageVisibilityStateVisible;
     if (m_layerTreeView)
         m_layerTreeView->setVisible(visible);
     m_scheduler->setPageVisible(visible);
 }
 
-bool WebViewImpl::requestPointerLock()
-{
-    return m_client && m_client->requestPointerLock();
-}
-
-void WebViewImpl::requestPointerUnlock()
-{
-    if (m_client)
-        m_client->requestPointerUnlock();
-}
-
-bool WebViewImpl::isPointerLocked()
-{
-    return m_client && m_client->isPointerLocked();
-}
-
 void WebViewImpl::pointerLockMouseEvent(const WebInputEvent& event)
 {
     OwnPtr<UserGestureIndicator> gestureIndicator;
     AtomicString eventType;
     switch (event.type) {
     case WebInputEvent::MouseDown:
         eventType = EventTypeNames::mousedown;
         gestureIndicator = adoptPtr(new UserGestureIndicator(DefinitelyProcessingNewUserGesture));
         m_pointerLockGestureToken = gestureIndicator->currentToken();
         break;
@@ skipping 81 matching lines @@
 {
     // TODO(oshima): Investigate if this should return the ScreenInfo's scale factor rather than
     // page's scale factor, which can be 1 in use-zoom-for-dsf mode.
     if (!page())
         return 1;
 
     return page()->deviceScaleFactor();
 }
 
 } // namespace blink