98 lines
3.8 KiB
C++
98 lines
3.8 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 "ChangeListTypeCommand.h"
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#include "Editing.h"
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#include "ElementAncestorIterator.h"
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#include "Frame.h"
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#include "FrameSelection.h"
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#include "HTMLElement.h"
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#include "HTMLOListElement.h"
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#include "HTMLUListElement.h"
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#include <wtf/RefPtr.h>
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namespace WebCore {
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static std::optional<std::pair<ChangeListTypeCommand::Type, Ref<HTMLElement>>> listConversionTypeForSelection(const VisibleSelection& selection)
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{
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auto startNode = selection.start().containerNode();
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auto endNode = selection.end().containerNode();
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if (!startNode || !endNode)
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return { };
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auto commonAncestor = commonInclusiveAncestor<ComposedTree>(*startNode, *endNode);
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RefPtr<HTMLElement> listToReplace;
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if (is<HTMLUListElement>(commonAncestor) || is<HTMLOListElement>(commonAncestor))
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listToReplace = downcast<HTMLElement>(commonAncestor);
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else
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listToReplace = enclosingList(commonAncestor);
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if (is<HTMLUListElement>(listToReplace))
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return {{ ChangeListTypeCommand::Type::ConvertToOrderedList, listToReplace.releaseNonNull() }};
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if (is<HTMLOListElement>(listToReplace))
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return {{ ChangeListTypeCommand::Type::ConvertToUnorderedList, listToReplace.releaseNonNull() }};
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return std::nullopt;
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}
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std::optional<ChangeListTypeCommand::Type> ChangeListTypeCommand::listConversionType(Document& document)
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{
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if (auto frame = makeRefPtr(document.frame())) {
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if (auto typeAndElement = listConversionTypeForSelection(frame->selection().selection()))
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return typeAndElement->first;
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}
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return std::nullopt;
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}
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Ref<HTMLElement> ChangeListTypeCommand::createNewList(const HTMLElement& listToReplace)
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{
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RefPtr<HTMLElement> list;
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if (m_type == Type::ConvertToOrderedList)
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list = HTMLOListElement::create(document());
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else
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list = HTMLUListElement::create(document());
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list->cloneDataFromElement(listToReplace);
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return list.releaseNonNull();
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}
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void ChangeListTypeCommand::doApply()
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{
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auto typeAndElement = listConversionTypeForSelection(endingSelection());
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if (!typeAndElement || typeAndElement->first != m_type)
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return;
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auto listToReplace = WTFMove(typeAndElement->second);
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auto newList = createNewList(listToReplace);
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insertNodeBefore(newList.copyRef(), listToReplace);
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moveRemainingSiblingsToNewParent(listToReplace->firstChild(), nullptr, newList);
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removeNode(listToReplace);
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setEndingSelection({ Position { newList.ptr(), Position::PositionIsAfterChildren }});
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}
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} // namespace WebCore
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