265 lines
10 KiB
C++
265 lines
10 KiB
C++
/*
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* Copyright (C) 2018 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "LayoutState.h"
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#if ENABLE(LAYOUT_FORMATTING_CONTEXT)
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#include "BlockFormattingState.h"
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#include "FlexFormattingState.h"
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#include "FloatingState.h"
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#include "InlineFormattingState.h"
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#include "LayoutBox.h"
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#include "LayoutBoxGeometry.h"
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#include "LayoutContainerBox.h"
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#include "RenderBox.h"
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#include "RuntimeEnabledFeatures.h"
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#include "TableFormattingState.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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namespace Layout {
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WTF_MAKE_ISO_ALLOCATED_IMPL(LayoutState);
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LayoutState::LayoutState(const Document& document, const ContainerBox& rootContainer)
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: m_rootContainer(makeWeakPtr(rootContainer))
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{
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// It makes absolutely no sense to construct a dedicated layout state for a non-formatting context root (layout would be a no-op).
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ASSERT(root().establishesFormattingContext());
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auto quirksMode = [&] {
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if (document.inLimitedQuirksMode())
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return LayoutState::QuirksMode::Limited;
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if (document.inQuirksMode())
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return LayoutState::QuirksMode::Yes;
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return LayoutState::QuirksMode::No;
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};
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setQuirksMode(quirksMode());
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}
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LayoutState::~LayoutState() = default;
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BoxGeometry& LayoutState::geometryForRootBox()
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{
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return ensureGeometryForBox(root());
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}
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BoxGeometry& LayoutState::ensureGeometryForBoxSlow(const Box& layoutBox)
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{
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if (layoutBox.canCacheForLayoutState(*this)) {
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ASSERT(!layoutBox.cachedGeometryForLayoutState(*this));
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auto newBox = makeUnique<BoxGeometry>();
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auto& newBoxPtr = *newBox;
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layoutBox.setCachedGeometryForLayoutState(*this, WTFMove(newBox));
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return newBoxPtr;
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}
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return *m_layoutBoxToBoxGeometry.ensure(&layoutBox, [] {
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return makeUnique<BoxGeometry>();
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}).iterator->value;
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}
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FormattingState& LayoutState::formattingStateForBox(const Box& layoutBox) const
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{
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return establishedFormattingState(layoutBox.formattingContextRoot());
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}
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bool LayoutState::hasFormattingState(const ContainerBox& formattingContextRoot) const
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{
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ASSERT(formattingContextRoot.establishesFormattingContext());
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return m_blockFormattingStates.contains(&formattingContextRoot)
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|| m_inlineFormattingStates.contains(&formattingContextRoot)
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|| m_tableFormattingStates.contains(&formattingContextRoot)
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|| m_flexFormattingStates.contains(&formattingContextRoot);
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}
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FormattingState& LayoutState::establishedFormattingState(const ContainerBox& formattingContextRoot) const
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{
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if (RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled()) {
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ASSERT(&formattingContextRoot == m_rootContainer.get());
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return *m_rootInlineFormattingStateForIntegration;
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}
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if (auto* formattingState = m_inlineFormattingStates.get(&formattingContextRoot))
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return *formattingState;
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if (auto* formattingState = m_blockFormattingStates.get(&formattingContextRoot))
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return *formattingState;
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if (auto* formattingState = m_tableFormattingStates.get(&formattingContextRoot))
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return *formattingState;
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if (auto* formattingState = m_flexFormattingStates.get(&formattingContextRoot))
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return *formattingState;
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CRASH();
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}
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InlineFormattingState& LayoutState::establishedInlineFormattingState(const ContainerBox& formattingContextRoot) const
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{
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ASSERT(formattingContextRoot.establishesInlineFormattingContext());
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if (RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled()) {
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ASSERT(&formattingContextRoot == m_rootContainer.get());
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return *m_rootInlineFormattingStateForIntegration;
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}
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return *m_inlineFormattingStates.get(&formattingContextRoot);
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}
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BlockFormattingState& LayoutState::establishedBlockFormattingState(const ContainerBox& formattingContextRoot) const
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{
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ASSERT(formattingContextRoot.establishesBlockFormattingContext());
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return *m_blockFormattingStates.get(&formattingContextRoot);
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}
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TableFormattingState& LayoutState::establishedTableFormattingState(const ContainerBox& formattingContextRoot) const
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{
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ASSERT(formattingContextRoot.establishesTableFormattingContext());
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return *m_tableFormattingStates.get(&formattingContextRoot);
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}
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FlexFormattingState& LayoutState::establishedFlexFormattingState(const ContainerBox& formattingContextRoot) const
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{
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ASSERT(formattingContextRoot.establishesFlexFormattingContext());
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return *m_flexFormattingStates.get(&formattingContextRoot);
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}
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FormattingState& LayoutState::ensureFormattingState(const ContainerBox& formattingContextRoot)
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{
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if (formattingContextRoot.establishesInlineFormattingContext())
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return ensureInlineFormattingState(formattingContextRoot);
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if (formattingContextRoot.establishesBlockFormattingContext())
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return ensureBlockFormattingState(formattingContextRoot);
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if (formattingContextRoot.establishesTableFormattingContext())
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return ensureTableFormattingState(formattingContextRoot);
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if (formattingContextRoot.establishesFlexFormattingContext())
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return ensureFlexFormattingState(formattingContextRoot);
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CRASH();
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}
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InlineFormattingState& LayoutState::ensureInlineFormattingState(const ContainerBox& formattingContextRoot)
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{
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ASSERT(formattingContextRoot.establishesInlineFormattingContext());
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auto create = [&] {
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// If the block container box that initiates this inline formatting context also establishes a block context, the floats outside of the formatting root
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// should not interfere with the content inside.
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// <div style="float: left"></div><div style="overflow: hidden"> <- is a non-intrusive float, because overflow: hidden triggers new block formatting context.</div>
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if (formattingContextRoot.establishesBlockFormattingContext())
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return makeUnique<InlineFormattingState>(FloatingState::create(*this, formattingContextRoot), *this);
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// Otherwise, the formatting context inherits the floats from the parent formatting context.
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// Find the formatting state in which this formatting root lives, not the one it creates and use its floating state.
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auto& parentFormattingState = ensureFormattingState(formattingContextRoot.formattingContextRoot());
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auto& parentFloatingState = parentFormattingState.floatingState();
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return makeUnique<InlineFormattingState>(parentFloatingState, *this);
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};
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if (RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled()) {
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if (!m_rootInlineFormattingStateForIntegration) {
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ASSERT(&formattingContextRoot == m_rootContainer.get());
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m_rootInlineFormattingStateForIntegration = create();
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}
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return *m_rootInlineFormattingStateForIntegration;
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}
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return *m_inlineFormattingStates.ensure(&formattingContextRoot, create).iterator->value;
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}
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BlockFormattingState& LayoutState::ensureBlockFormattingState(const ContainerBox& formattingContextRoot)
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{
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ASSERT(formattingContextRoot.establishesBlockFormattingContext());
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auto create = [&] {
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return makeUnique<BlockFormattingState>(FloatingState::create(*this, formattingContextRoot), *this);
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};
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return *m_blockFormattingStates.ensure(&formattingContextRoot, create).iterator->value;
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}
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TableFormattingState& LayoutState::ensureTableFormattingState(const ContainerBox& formattingContextRoot)
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{
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ASSERT(formattingContextRoot.establishesTableFormattingContext());
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auto create = [&] {
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// Table formatting context always establishes a new floating state -and it stays empty.
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return makeUnique<TableFormattingState>(FloatingState::create(*this, formattingContextRoot), *this, formattingContextRoot);
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};
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return *m_tableFormattingStates.ensure(&formattingContextRoot, create).iterator->value;
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}
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FlexFormattingState& LayoutState::ensureFlexFormattingState(const ContainerBox& formattingContextRoot)
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{
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ASSERT(formattingContextRoot.establishesFlexFormattingContext());
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auto create = [&] {
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// Flex formatting context always establishes a new floating state -and it stays empty.
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return makeUnique<FlexFormattingState>(FloatingState::create(*this, formattingContextRoot), *this);
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};
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return *m_flexFormattingStates.ensure(&formattingContextRoot, create).iterator->value;
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}
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void LayoutState::setViewportSize(const LayoutSize& viewportSize)
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{
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ASSERT(RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled());
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m_viewportSize = viewportSize;
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}
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LayoutSize LayoutState::viewportSize() const
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{
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ASSERT(RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled());
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return m_viewportSize;
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}
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void LayoutState::setIsIntegratedRootBoxFirstChild(bool value)
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{
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ASSERT(RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled());
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m_isIntegratedRootBoxFirstChild = value ? IsIntegratedRootBoxFirstChild::Yes : IsIntegratedRootBoxFirstChild::No;
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}
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bool LayoutState::shouldIgnoreTrailingLetterSpacing() const
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{
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return RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled();
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}
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bool LayoutState::shouldNotSynthesizeInlineBlockBaseline() const
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{
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return RuntimeEnabledFeatures::sharedFeatures().layoutFormattingContextIntegrationEnabled();
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}
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}
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}
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#endif
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