1 /* 2 * Copyright (C) 2006, 2007 Apple 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 COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef FocusController_h 27 #define FocusController_h 28 29 #include "FocusDirection.h" 30 #include "SpatialNavigation.h" 31 #include <wtf/Forward.h> 32 #include <wtf/Noncopyable.h> 33 #include <wtf/RefPtr.h> 34 35 namespace WebCore { 36 37 class Document; 38 class Frame; 39 class KeyboardEvent; 40 class Node; 41 class Page; 42 43 class FocusController { 44 WTF_MAKE_NONCOPYABLE(FocusController); WTF_MAKE_FAST_ALLOCATED; 45 public: 46 FocusController(Page*); 47 48 void setFocusedFrame(PassRefPtr<Frame>); 49 Frame* focusedFrame() const { return m_focusedFrame.get(); } 50 Frame* focusedOrMainFrame() const; 51 52 bool setInitialFocus(FocusDirection, KeyboardEvent*); 53 bool advanceFocus(FocusDirection, KeyboardEvent*, bool initialFocus = false); 54 55 bool setFocusedNode(Node*, PassRefPtr<Frame>); 56 57 void setActive(bool); 58 bool isActive() const { return m_isActive; } 59 60 void setFocused(bool); 61 bool isFocused() const { return m_isFocused; } 62 63 private: 64 bool advanceFocusDirectionally(FocusDirection, KeyboardEvent*); 65 bool advanceFocusInDocumentOrder(FocusDirection, KeyboardEvent*, bool initialFocus); 66 67 bool advanceFocusDirectionallyInContainer(Node* container, const IntRect& startingRect, FocusDirection, KeyboardEvent*); 68 void findFocusCandidateInContainer(Node* container, const IntRect& startingRect, FocusDirection, KeyboardEvent*, FocusCandidate& closest); 69 70 Page* m_page; 71 RefPtr<Frame> m_focusedFrame; 72 bool m_isActive; 73 bool m_isFocused; 74 bool m_isChangingFocusedFrame; 75 }; 76 77 } // namespace WebCore 78 79 #endif // FocusController_h 80