/* * Copyright (C) 2006, 2010 Apple Inc. All rights reserved. * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) * Copyright (C) 2009 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: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #pragma once #include <WebCore/BackForwardClient.h> #include <wtf/HashSet.h> #include <wtf/Vector.h> typedef Vector<Ref<WebCore::HistoryItem>> HistoryItemVector; typedef HashSet<RefPtr<WebCore::HistoryItem>> HistoryItemHashSet; class BackForwardList : public WebCore::BackForwardClient { public: static Ref<BackForwardList> create() { return adoptRef(*new BackForwardList()); } virtual ~BackForwardList(); void addItem(Ref<WebCore::HistoryItem>&&) override; void goBack(); void goForward(); void goToItem(WebCore::HistoryItem&) override; RefPtr<WebCore::HistoryItem> backItem(); RefPtr<WebCore::HistoryItem> currentItem(); RefPtr<WebCore::HistoryItem> forwardItem(); RefPtr<WebCore::HistoryItem> itemAtIndex(int) override; void backListWithLimit(int, HistoryItemVector&); void forwardListWithLimit(int, HistoryItemVector&); int capacity(); void setCapacity(int); bool enabled(); void setEnabled(bool); unsigned backListCount() const final; unsigned forwardListCount() const final; bool containsItem(WebCore::HistoryItem*); void close() override; bool closed(); void removeItem(WebCore::HistoryItem*); HistoryItemVector& entries(); private: explicit BackForwardList(); HistoryItemVector m_entries; HistoryItemHashSet m_entryHash; unsigned m_current; unsigned m_capacity; bool m_closed; bool m_enabled; };