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/*
* Copyright (C) 2018-2024 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 "RenderTreeBuilderBlockFlow.h"
#include "RenderMultiColumnFlow.h"
#include "RenderTreeBuilderBlock.h"
#include "RenderTreeBuilderMultiColumn.h"
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(RenderTreeBuilder::BlockFlow);
RenderTreeBuilder::BlockFlow::BlockFlow(RenderTreeBuilder& builder)
: m_builder(builder)
{
}
void RenderTreeBuilder::BlockFlow::attach(RenderBlockFlow& parent, RenderPtr<RenderObject> child, RenderObject* beforeChild)
{
if (auto* multicolumnFlow = parent.multiColumnFlow()) {
auto legendAvoidsMulticolumn = parent.isFieldset() && child->isLegend();
if (legendAvoidsMulticolumn)
return m_builder.blockBuilder().attach(parent, WTFMove(child), nullptr);
auto legendBeforeChildIsIncorrect = parent.isFieldset() && beforeChild && beforeChild->isLegend();
if (legendBeforeChildIsIncorrect)
return m_builder.blockBuilder().attach(*multicolumnFlow, WTFMove(child), nullptr);
// When the before child is set to be the first child of the RenderBlockFlow, we need to readjust it to be the first
// child of the multicol conainter.
return m_builder.attach(*multicolumnFlow, WTFMove(child), beforeChild == multicolumnFlow ? multicolumnFlow->firstChild() : beforeChild);
}
auto* beforeChildOrPlaceholder = beforeChild;
if (auto* containingFragmentedFlow = parent.enclosingFragmentedFlow())
beforeChildOrPlaceholder = m_builder.multiColumnBuilder().resolveMovedChild(*containingFragmentedFlow, beforeChild);
m_builder.blockBuilder().attach(parent, WTFMove(child), beforeChildOrPlaceholder);
}
void RenderTreeBuilder::BlockFlow::moveAllChildrenIncludingFloats(RenderBlockFlow& from, RenderBlock& to, RenderTreeBuilder::NormalizeAfterInsertion normalizeAfterInsertion)
{
m_builder.moveAllChildren(from, to, normalizeAfterInsertion);
from.addFloatsToNewParent(downcast<RenderBlockFlow>(to));
}
}
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