| /* |
| * Copyright (C) 2018 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 "ChangeListTypeCommand.h" |
| |
| #include "Editing.h" |
| #include "ElementAncestorIterator.h" |
| #include "Frame.h" |
| #include "FrameSelection.h" |
| #include "HTMLElement.h" |
| #include "HTMLOListElement.h" |
| #include "HTMLUListElement.h" |
| #include <wtf/Optional.h> |
| #include <wtf/RefPtr.h> |
| |
| namespace WebCore { |
| |
| static Optional<std::pair<ChangeListTypeCommand::Type, Ref<HTMLElement>>> listConversionTypeForSelection(const VisibleSelection& selection) |
| { |
| auto startNode = selection.start().containerNode(); |
| auto endNode = selection.end().containerNode(); |
| if (!startNode || !endNode) |
| return { }; |
| auto commonAncestor = commonInclusiveAncestor(*startNode, *endNode); |
| |
| RefPtr<HTMLElement> listToReplace; |
| if (is<HTMLUListElement>(commonAncestor) || is<HTMLOListElement>(commonAncestor)) |
| listToReplace = downcast<HTMLElement>(commonAncestor.get()); |
| else |
| listToReplace = enclosingList(commonAncestor.get()); |
| |
| if (is<HTMLUListElement>(listToReplace)) |
| return {{ ChangeListTypeCommand::Type::ConvertToOrderedList, listToReplace.releaseNonNull() }}; |
| |
| if (is<HTMLOListElement>(listToReplace)) |
| return {{ ChangeListTypeCommand::Type::ConvertToUnorderedList, listToReplace.releaseNonNull() }}; |
| |
| return WTF::nullopt; |
| } |
| |
| Optional<ChangeListTypeCommand::Type> ChangeListTypeCommand::listConversionType(Document& document) |
| { |
| if (auto frame = makeRefPtr(document.frame())) { |
| if (auto typeAndElement = listConversionTypeForSelection(frame->selection().selection())) |
| return typeAndElement->first; |
| } |
| return WTF::nullopt; |
| } |
| |
| Ref<HTMLElement> ChangeListTypeCommand::createNewList(const HTMLElement& listToReplace) |
| { |
| RefPtr<HTMLElement> list; |
| if (m_type == Type::ConvertToOrderedList) |
| list = HTMLOListElement::create(document()); |
| else |
| list = HTMLUListElement::create(document()); |
| list->cloneDataFromElement(listToReplace); |
| return list.releaseNonNull(); |
| } |
| |
| void ChangeListTypeCommand::doApply() |
| { |
| auto typeAndElement = listConversionTypeForSelection(endingSelection()); |
| if (!typeAndElement || typeAndElement->first != m_type) |
| return; |
| |
| auto listToReplace = WTFMove(typeAndElement->second); |
| auto newList = createNewList(listToReplace); |
| insertNodeBefore(newList.copyRef(), listToReplace); |
| moveRemainingSiblingsToNewParent(listToReplace->firstChild(), nullptr, newList); |
| removeNode(listToReplace); |
| setEndingSelection({ Position { newList.ptr(), Position::PositionIsAfterChildren }}); |
| } |
| |
| } // namespace WebCore |