MergeIdenticalElementsCommand.cpp [plain text]
#include "config.h"
#include "MergeIdenticalElementsCommand.h"
#include "Element.h"
namespace WebCore {
MergeIdenticalElementsCommand::MergeIdenticalElementsCommand(Ref<Element>&& first, Ref<Element>&& second)
: SimpleEditCommand(first->document())
, m_element1(WTFMove(first))
, m_element2(WTFMove(second))
{
ASSERT(m_element1->nextSibling() == m_element2.ptr());
}
void MergeIdenticalElementsCommand::doApply()
{
if (m_element1->nextSibling() != m_element2.ptr() || !m_element1->hasEditableStyle() || !m_element2->hasEditableStyle())
return;
m_atChild = m_element2->firstChild();
Vector<Ref<Node>> children;
for (Node* child = m_element1->firstChild(); child; child = child->nextSibling())
children.append(*child);
for (auto& child : children)
m_element2->insertBefore(child, m_atChild.get());
m_element1->remove();
}
void MergeIdenticalElementsCommand::doUnapply()
{
RefPtr<Node> atChild = WTFMove(m_atChild);
auto* parent = m_element2->parentNode();
if (!parent || !parent->hasEditableStyle())
return;
if (parent->insertBefore(m_element1, m_element2.ptr()).hasException())
return;
Vector<Ref<Node>> children;
for (Node* child = m_element2->firstChild(); child && child != atChild; child = child->nextSibling())
children.append(*child);
for (auto& child : children)
m_element1->appendChild(child);
}
#ifndef NDEBUG
void MergeIdenticalElementsCommand::getNodesInCommand(HashSet<Node*>& nodes)
{
addNodeAndDescendants(m_element1.ptr(), nodes);
addNodeAndDescendants(m_element2.ptr(), nodes);
}
#endif
}