Pointerevent capture APIs

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 1613 matching lines @@
 WebInputEventResult EventHandler::dispatchMouseEvent(const AtomicString& eventType, Node* targetNode, int clickCount, const PlatformMouseEvent& mouseEvent)
 {
     updateMouseEventTargetNode(targetNode, mouseEvent);
     if (!m_nodeUnderMouse)
         return WebInputEventResult::NotHandled;
 
     RefPtrWillBeRawPtr<MouseEvent> event = MouseEvent::create(eventType, m_nodeUnderMouse->document().domWindow(), mouseEvent, clickCount, nullptr);
     return toWebInputEventResult(m_nodeUnderMouse->dispatchEvent(event));
 }
 
+bool EventHandler::isPointerEventActive(int pointerId)
+{
+    return m_pointerEventManager.isActive(pointerId);
+}
+
+void EventHandler::setPointerCapture(int pointerId, EventTarget* target)
+{
+    m_pointerEventManager.setPointerCapture(pointerId, target);

[Rick Byers, 2016/03/01 16:58:34]

As discussed offline, I think keeping this state per-frame is going to cause
bugs in cases where the point moves between iframes.  It's a pre-existing issue
with the PointerEventManager though, so I'd suggest filing a bug for moving
PointerEventManager from EventHandler to FrameHost and adding a TODO referencing
that bug here.

[Navid Zolghadr, 2016/03/01 20:46:05]

I will file that bug but I believe the TODO belongs somewhere beyond this
particular function and this change. But if you still like me to add the TODO
here I'll add it.

[Rick Byers, 2016/03/03 16:35:45]

Sure, that's fine.  I expect this all to change relatively soon so the TODOs
don't matter much (but the bugs tracking our planned work do).

+}
+
+void EventHandler::releasePointerCapture(int pointerId, EventTarget* target)
+{
+    m_pointerEventManager.releasePointerCapture(pointerId, target);
+}
+
+void EventHandler::elementRemoved(EventTarget* target)
+{
+    m_pointerEventManager.elementRemoved(target);
+}
+
 // TODO(mustaq): Make PE drive ME dispatch & bookkeeping in EventHandler.
 WebInputEventResult EventHandler::updatePointerTargetAndDispatchEvents(const AtomicString& mouseEventType, Node* targetNode, int clickCount, const PlatformMouseEvent& mouseEvent)
 {
     ASSERT(mouseEventType == EventTypeNames::mousedown
         || mouseEventType == EventTypeNames::mousemove
         || mouseEventType == EventTypeNames::mouseup);
 
     updateMouseEventTargetNode(targetNode, mouseEvent);
     if (!m_nodeUnderMouse)
         return WebInputEventResult::NotHandled;
@@ skipping 2338 matching lines @@
 PlatformEvent::Modifiers EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return static_cast<PlatformEvent::Modifiers>(PlatformEvent::CtrlKey | PlatformEvent::AltKey);
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink