138 lines
4.2 KiB
C++
138 lines
4.2 KiB
C++
/*
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* Copyright (C) 2016 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 "StyleUpdate.h"
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#include "ComposedTreeAncestorIterator.h"
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#include "Document.h"
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#include "Element.h"
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#include "NodeRenderStyle.h"
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#include "RenderElement.h"
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#include "Text.h"
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namespace WebCore {
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namespace Style {
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Update::Update(Document& document)
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: m_document(document)
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{
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}
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const ElementUpdates* Update::elementUpdates(const Element& element) const
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{
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auto it = m_elements.find(&element);
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if (it == m_elements.end())
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return nullptr;
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return &it->value;
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}
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ElementUpdates* Update::elementUpdates(const Element& element)
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{
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auto it = m_elements.find(&element);
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if (it == m_elements.end())
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return nullptr;
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return &it->value;
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}
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const TextUpdate* Update::textUpdate(const Text& text) const
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{
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auto it = m_texts.find(&text);
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if (it == m_texts.end())
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return nullptr;
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return &it->value;
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}
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const RenderStyle* Update::elementStyle(const Element& element) const
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{
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if (auto* updates = elementUpdates(element))
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return updates->update.style.get();
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auto* renderer = element.renderer();
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if (!renderer)
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return nullptr;
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return &renderer->style();
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}
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RenderStyle* Update::elementStyle(const Element& element)
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{
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if (auto* updates = elementUpdates(element))
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return updates->update.style.get();
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auto* renderer = element.renderer();
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if (!renderer)
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return nullptr;
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return &renderer->mutableStyle();
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}
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void Update::addElement(Element& element, Element* parent, ElementUpdates&& elementUpdates)
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{
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ASSERT(!m_elements.contains(&element));
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ASSERT(composedTreeAncestors(element).first() == parent);
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m_roots.remove(&element);
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addPossibleRoot(parent);
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m_elements.add(&element, WTFMove(elementUpdates));
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}
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void Update::addText(Text& text, Element* parent, TextUpdate&& textUpdate)
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{
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ASSERT(composedTreeAncestors(text).first() == parent);
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addPossibleRoot(parent);
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auto result = m_texts.add(&text, WTFMove(textUpdate));
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if (!result.isNewEntry) {
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auto& entry = result.iterator->value;
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auto startOffset = std::min(entry.offset, textUpdate.offset);
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auto endOffset = std::max(entry.offset + entry.length, textUpdate.offset + textUpdate.length);
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entry.offset = startOffset;
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entry.length = endOffset - startOffset;
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ASSERT(!entry.inheritedDisplayContentsStyle || !textUpdate.inheritedDisplayContentsStyle);
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if (!entry.inheritedDisplayContentsStyle)
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entry.inheritedDisplayContentsStyle = WTFMove(textUpdate.inheritedDisplayContentsStyle);
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}
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}
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void Update::addText(Text& text, TextUpdate&& textUpdate)
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{
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addText(text, composedTreeAncestors(text).first(), WTFMove(textUpdate));
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}
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void Update::addPossibleRoot(Element* element)
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{
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if (!element) {
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m_roots.add(m_document.ptr());
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return;
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}
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if (m_elements.contains(element))
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return;
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m_roots.add(element);
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}
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}
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}
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