| /* |
| * Copyright (C) 2005, 2008 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 COMPUTER, INC. ``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 COMPUTER, INC. OR |
| * 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 "core/editing/commands/SplitElementCommand.h" |
| |
| #include "bindings/core/v8/ExceptionState.h" |
| #include "bindings/core/v8/ExceptionStatePlaceholder.h" |
| #include "core/HTMLNames.h" |
| #include "core/dom/Element.h" |
| #include "core/editing/EditingUtilities.h" |
| #include "wtf/Assertions.h" |
| |
| namespace blink { |
| |
| SplitElementCommand::SplitElementCommand(Element* element, Node* atChild) |
| : SimpleEditCommand(element->document()), |
| m_element2(element), |
| m_atChild(atChild) { |
| DCHECK(m_element2); |
| DCHECK(m_atChild); |
| DCHECK_EQ(m_atChild->parentNode(), m_element2); |
| } |
| |
| void SplitElementCommand::executeApply() { |
| if (m_atChild->parentNode() != m_element2) |
| return; |
| |
| HeapVector<Member<Node>> children; |
| for (Node* node = m_element2->firstChild(); node != m_atChild; |
| node = node->nextSibling()) |
| children.append(node); |
| |
| TrackExceptionState exceptionState; |
| |
| ContainerNode* parent = m_element2->parentNode(); |
| if (!parent || !hasEditableStyle(*parent)) |
| return; |
| parent->insertBefore(m_element1.get(), m_element2.get(), exceptionState); |
| if (exceptionState.hadException()) |
| return; |
| |
| // Delete id attribute from the second element because the same id cannot be |
| // used for more than one element |
| m_element2->removeAttribute(HTMLNames::idAttr); |
| |
| for (const auto& child : children) |
| m_element1->appendChild(child, exceptionState); |
| } |
| |
| void SplitElementCommand::doApply(EditingState*) { |
| m_element1 = m_element2->cloneElementWithoutChildren(); |
| |
| executeApply(); |
| } |
| |
| void SplitElementCommand::doUnapply() { |
| if (!m_element1 || !hasEditableStyle(*m_element1) || |
| !hasEditableStyle(*m_element2)) |
| return; |
| |
| NodeVector children; |
| getChildNodes(*m_element1, children); |
| |
| Node* refChild = m_element2->firstChild(); |
| |
| for (const auto& child : children) |
| m_element2->insertBefore(child, refChild, IGNORE_EXCEPTION); |
| |
| // Recover the id attribute of the original element. |
| const AtomicString& id = m_element1->getAttribute(HTMLNames::idAttr); |
| if (!id.isNull()) |
| m_element2->setAttribute(HTMLNames::idAttr, id); |
| |
| m_element1->remove(IGNORE_EXCEPTION); |
| } |
| |
| void SplitElementCommand::doReapply() { |
| if (!m_element1) |
| return; |
| |
| executeApply(); |
| } |
| |
| DEFINE_TRACE(SplitElementCommand) { |
| visitor->trace(m_element1); |
| visitor->trace(m_element2); |
| visitor->trace(m_atChild); |
| SimpleEditCommand::trace(visitor); |
| } |
| |
| } // namespace blink |