blob: dab32129f9b921f9d52cc8c8f5f632d540e7eef6 [file] [log] [blame]
/*
* Copyright (C) 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 "StyleUpdate.h"
#include "ComposedTreeAncestorIterator.h"
#include "Document.h"
#include "Element.h"
#include "NodeRenderStyle.h"
#include "RenderElement.h"
#include "SVGElement.h"
#include "Text.h"
namespace WebCore {
namespace Style {
Update::Update(Document& document)
: m_document(document)
{
}
const ElementUpdate* Update::elementUpdate(const Element& element) const
{
auto it = m_elements.find(&element);
if (it == m_elements.end())
return nullptr;
return &it->value;
}
ElementUpdate* Update::elementUpdate(const Element& element)
{
auto it = m_elements.find(&element);
if (it == m_elements.end())
return nullptr;
return &it->value;
}
const TextUpdate* Update::textUpdate(const Text& text) const
{
auto it = m_texts.find(&text);
if (it == m_texts.end())
return nullptr;
return &it->value;
}
const RenderStyle* Update::elementStyle(const Element& element) const
{
if (auto* update = elementUpdate(element))
return update->style.get();
auto* renderer = element.renderer();
if (!renderer)
return nullptr;
return &renderer->style();
}
RenderStyle* Update::elementStyle(const Element& element)
{
if (auto* update = elementUpdate(element))
return update->style.get();
auto* renderer = element.renderer();
if (!renderer)
return nullptr;
return &renderer->mutableStyle();
}
void Update::addElement(Element& element, Element* parent, ElementUpdate&& elementUpdate)
{
ASSERT(composedTreeAncestors(element).first() == parent);
ASSERT(!m_elements.contains(&element));
m_roots.remove(&element);
addPossibleRoot(parent);
m_elements.add(&element, WTFMove(elementUpdate));
}
void Update::addText(Text& text, Element* parent, TextUpdate&& textUpdate)
{
ASSERT(composedTreeAncestors(text).first() == parent);
addPossibleRoot(parent);
auto result = m_texts.add(&text, WTFMove(textUpdate));
if (!result.isNewEntry) {
auto& entry = result.iterator->value;
auto startOffset = std::min(entry.offset, textUpdate.offset);
auto endOffset = std::max(entry.offset + entry.length, textUpdate.offset + textUpdate.length);
entry.offset = startOffset;
entry.length = endOffset - startOffset;
ASSERT(!entry.inheritedDisplayContentsStyle || !textUpdate.inheritedDisplayContentsStyle);
if (!entry.inheritedDisplayContentsStyle)
entry.inheritedDisplayContentsStyle = WTFMove(textUpdate.inheritedDisplayContentsStyle);
}
}
void Update::addText(Text& text, TextUpdate&& textUpdate)
{
addText(text, composedTreeAncestors(text).first(), WTFMove(textUpdate));
}
void Update::addSVGRendererUpdate(SVGElement& element)
{
auto parent = composedTreeAncestors(element).first();
m_roots.remove(&element);
addPossibleRoot(parent);
element.setNeedsSVGRendererUpdate(true);
}
void Update::addPossibleRoot(Element* element)
{
if (!element) {
m_roots.add(m_document.ptr());
return;
}
if (element->needsSVGRendererUpdate() || m_elements.contains(element))
return;
m_roots.add(element);
}
}
}