1 /* 2 * Copyright (C) 2012 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY 17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23 */ 24 25 #ifndef PointerLockController_h 26 #define PointerLockController_h 27 28 #include "platform/heap/Handle.h" 29 #include "wtf/RefPtr.h" 30 #include "wtf/text/AtomicString.h" 31 32 namespace blink { 33 34 class Element; 35 class Document; 36 class Page; 37 class PlatformMouseEvent; 38 39 class PointerLockController FINAL : public NoBaseWillBeGarbageCollected<PointerLockController> { 40 WTF_MAKE_NONCOPYABLE(PointerLockController); 41 WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED; 42 public: 43 static PassOwnPtrWillBeRawPtr<PointerLockController> create(Page*); 44 45 void requestPointerLock(Element* target); 46 void requestPointerUnlock(); 47 void elementRemoved(Element*); 48 void documentDetached(Document*); 49 bool lockPending() const; 50 Element* element() const; 51 52 void didAcquirePointerLock(); 53 void didNotAcquirePointerLock(); 54 void didLosePointerLock(); 55 void dispatchLockedMouseEvent(const PlatformMouseEvent&, const AtomicString& eventType); 56 57 void trace(Visitor*); 58 59 private: 60 explicit PointerLockController(Page*); 61 void clearElement(); 62 void enqueueEvent(const AtomicString& type, Element*); 63 void enqueueEvent(const AtomicString& type, Document*); 64 65 RawPtrWillBeMember<Page> m_page; 66 bool m_lockPending; 67 RefPtrWillBeMember<Element> m_element; 68 RefPtrWillBeMember<Document> m_documentOfRemovedElementWhileWaitingForUnlock; 69 }; 70 71 } // namespace blink 72 73 #endif // PointerLockController_h 74