1 /* 2 * Copyright (C) 2006, 2010 Apple Inc. All rights reserved. 3 * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 4 * Copyright (C) 2009 Google, Inc. All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 16 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 23 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #ifndef BackForwardListImpl_h 29 #define BackForwardListImpl_h 30 31 #include "BackForwardList.h" 32 #include <wtf/HashSet.h> 33 #include <wtf/Vector.h> 34 35 namespace WebCore { 36 37 class Page; 38 39 typedef Vector<RefPtr<HistoryItem> > HistoryItemVector; 40 typedef HashSet<RefPtr<HistoryItem> > HistoryItemHashSet; 41 42 // FIXME: After renaming BackForwardList to BackForwardClient, 43 // rename this to BackForwardList. 44 class BackForwardListImpl : public BackForwardList { 45 public: 46 static PassRefPtr<BackForwardListImpl> create(Page* page) { return adoptRef(new BackForwardListImpl(page)); } 47 virtual ~BackForwardListImpl(); 48 49 Page* page() { return m_page; } 50 51 virtual void addItem(PassRefPtr<HistoryItem>); 52 void goBack(); 53 void goForward(); 54 virtual void goToItem(HistoryItem*); 55 56 HistoryItem* backItem(); 57 HistoryItem* currentItem(); 58 HistoryItem* forwardItem(); 59 virtual HistoryItem* itemAtIndex(int); 60 61 void backListWithLimit(int, HistoryItemVector&); 62 void forwardListWithLimit(int, HistoryItemVector&); 63 64 int capacity(); 65 void setCapacity(int); 66 bool enabled(); 67 void setEnabled(bool); 68 virtual int backListCount(); 69 virtual int forwardListCount(); 70 bool containsItem(HistoryItem*); 71 72 virtual void close(); 73 bool closed(); 74 75 void removeItem(HistoryItem*); 76 HistoryItemVector& entries(); 77 78 #if ENABLE(WML) 79 virtual void clearWMLPageHistory(); 80 #endif 81 82 private: 83 BackForwardListImpl(Page*); 84 85 virtual bool isActive() { return enabled() && capacity(); } 86 87 Page* m_page; 88 HistoryItemVector m_entries; 89 HistoryItemHashSet m_entryHash; 90 unsigned m_current; 91 unsigned m_capacity; 92 bool m_closed; 93 bool m_enabled; 94 }; 95 96 } // namespace WebCore 97 98 #endif // BackForwardListImpl_h 99
