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/*
* 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;
};