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/*
* Copyright (C) 2010-2011, 2016 Apple 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. AND ITS CONTRIBUTORS ``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 ITS 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.
*/
#include "config.h"
#include "WebBackForwardListItem.h"
#include <WebCore/URL.h>
namespace WebKit {
static uint64_t highestItemID = 0;
Ref<WebBackForwardListItem> WebBackForwardListItem::create(BackForwardListItemState&& backForwardListItemState, uint64_t pageID)
{
return adoptRef(*new WebBackForwardListItem(WTFMove(backForwardListItemState), pageID));
}
WebBackForwardListItem::WebBackForwardListItem(BackForwardListItemState&& backForwardListItemState, uint64_t pageID)
: m_itemState(WTFMove(backForwardListItemState))
, m_pageID(pageID)
{
if (m_itemState.identifier > highestItemID)
highestItemID = m_itemState.identifier;
}
WebBackForwardListItem::~WebBackForwardListItem()
{
}
static const FrameState* childItemWithDocumentSequenceNumber(const FrameState& frameState, int64_t number)
{
for (const auto& child : frameState.children) {
if (child.documentSequenceNumber == number)
return &child;
}
return nullptr;
}
static bool documentTreesAreEqual(const FrameState& a, const FrameState& b)
{
if (a.documentSequenceNumber != b.documentSequenceNumber)
return false;
if (a.children.size() != b.children.size())
return false;
for (const auto& child : a.children) {
const FrameState* otherChild = childItemWithDocumentSequenceNumber(b, child.documentSequenceNumber);
if (!otherChild || !documentTreesAreEqual(child, *otherChild))
return false;
}
return true;
}
bool WebBackForwardListItem::itemIsInSameDocument(const WebBackForwardListItem& other) const
{
if (m_pageID != other.m_pageID)
return false;
// The following logic must be kept in sync with WebCore::HistoryItem::shouldDoSameDocumentNavigationTo.
const FrameState& mainFrameState = m_itemState.pageState.mainFrameState;
const FrameState& otherMainFrameState = other.m_itemState.pageState.mainFrameState;
if (mainFrameState.stateObjectData || otherMainFrameState.stateObjectData)
return mainFrameState.documentSequenceNumber == otherMainFrameState.documentSequenceNumber;
WebCore::URL url = WebCore::URL(WebCore::ParsedURLString, mainFrameState.urlString);
WebCore::URL otherURL = WebCore::URL(WebCore::ParsedURLString, otherMainFrameState.urlString);
if ((url.hasFragmentIdentifier() || otherURL.hasFragmentIdentifier()) && equalIgnoringFragmentIdentifier(url, otherURL))
return mainFrameState.documentSequenceNumber == otherMainFrameState.documentSequenceNumber;
return documentTreesAreEqual(mainFrameState, otherMainFrameState);
}
uint64_t WebBackForwardListItem::highestUsedItemID()
{
return highestItemID;
}
} // namespace WebKit