126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
/*
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* (C) 1999 Lars Knoll (knoll@kde.org)
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* (C) 2000 Dirk Mueller (mueller@kde.org)
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* Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include "config.h"
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#include "RenderTextFragment.h"
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#include "RenderBlock.h"
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#include "RenderIterator.h"
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#include "RenderMultiColumnFlow.h"
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#include "RenderTreeBuilder.h"
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#include "Text.h"
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#include <wtf/IsoMallocInlines.h>
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namespace WebCore {
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WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTextFragment);
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RenderTextFragment::RenderTextFragment(Text& textNode, const String& text, int startOffset, int length)
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: RenderText(textNode, text.substring(startOffset, length))
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, m_start(startOffset)
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, m_end(length)
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, m_firstLetter(nullptr)
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{
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}
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RenderTextFragment::RenderTextFragment(Document& document, const String& text, int startOffset, int length)
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: RenderText(document, text.substring(startOffset, length))
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, m_start(startOffset)
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, m_end(length)
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, m_firstLetter(nullptr)
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{
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}
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RenderTextFragment::RenderTextFragment(Document& textNode, const String& text)
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: RenderText(textNode, text)
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, m_start(0)
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, m_end(text.length())
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, m_contentString(text)
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, m_firstLetter(nullptr)
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{
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}
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RenderTextFragment::~RenderTextFragment()
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{
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ASSERT(!m_firstLetter);
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}
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bool RenderTextFragment::canBeSelectionLeaf() const
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{
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return textNode() && textNode()->hasEditableStyle();
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}
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void RenderTextFragment::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
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{
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RenderText::styleDidChange(diff, oldStyle);
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if (RenderBlock* block = blockForAccompanyingFirstLetter())
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block->mutableStyle().removeCachedPseudoStyle(PseudoId::FirstLetter);
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}
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void RenderTextFragment::setText(const String& newText, bool force)
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{
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RenderText::setText(newText, force);
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m_start = 0;
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m_end = text().length();
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if (!m_firstLetter)
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return;
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if (RenderTreeBuilder::current())
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RenderTreeBuilder::current()->destroy(*m_firstLetter);
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else
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RenderTreeBuilder(*document().renderView()).destroy(*m_firstLetter);
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ASSERT(!m_firstLetter);
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ASSERT(!textNode() || textNode()->renderer() == this);
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}
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UChar RenderTextFragment::previousCharacter() const
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{
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if (start()) {
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String original = textNode() ? textNode()->data() : contentString();
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if (!original.isNull() && start() <= original.length())
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return original[start() - 1];
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}
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return RenderText::previousCharacter();
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}
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RenderBlock* RenderTextFragment::blockForAccompanyingFirstLetter()
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{
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if (!m_firstLetter)
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return nullptr;
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for (auto& block : ancestorsOfType<RenderBlock>(*m_firstLetter)) {
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if (is<RenderMultiColumnFlow>(block))
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break;
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if (block.style().hasPseudoStyle(PseudoId::FirstLetter) && block.canHaveChildren())
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return █
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}
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return nullptr;
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}
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void RenderTextFragment::setContentString(const String& text)
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{
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m_contentString = text;
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setText(text);
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}
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} // namespace WebCore
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