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/*
* 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 "third_party/blink/renderer/core/editing/commands/split_element_command.h"
#include "third_party/blink/renderer/core/dom/element.h"
#include "third_party/blink/renderer/core/editing/editing_utilities.h"
#include "third_party/blink/renderer/core/html_names.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/wtf/assertions.h"
namespace blink {
SplitElementCommand::SplitElementCommand(Element* element, Node* at_child)
: SimpleEditCommand(element->GetDocument()),
element2_(element),
at_child_(at_child) {
DCHECK(element2_);
DCHECK(at_child_);
DCHECK_EQ(at_child_->parentNode(), element2_);
}
void SplitElementCommand::ExecuteApply() {
if (at_child_->parentNode() != element2_)
return;
HeapVector<Member<Node>> children;
for (Node* node = element2_->firstChild(); node != at_child_;
node = node->nextSibling())
children.push_back(node);
DummyExceptionStateForTesting exception_state;
ContainerNode* parent = element2_->parentNode();
if (!parent || !HasEditableStyle(*parent))
return;
parent->InsertBefore(element1_.Get(), element2_.Get(), exception_state);
if (exception_state.HadException())
return;
// Delete id attribute from the second element because the same id cannot be
// used for more than one element
element2_->removeAttribute(html_names::kIdAttr);
for (const auto& child : children)
element1_->AppendChild(child, exception_state);
}
void SplitElementCommand::DoApply(EditingState*) {
element1_ = element2_->CloneWithoutChildren();
ExecuteApply();
}
void SplitElementCommand::DoUnapply() {
if (!element1_ || !HasEditableStyle(*element1_) ||
!HasEditableStyle(*element2_))
return;
NodeVector children;
GetChildNodes(*element1_, children);
Node* ref_child = element2_->firstChild();
for (const auto& child : children)
element2_->InsertBefore(child, ref_child, IGNORE_EXCEPTION_FOR_TESTING);
// Recover the id attribute of the original element.
const AtomicString& id = element1_->FastGetAttribute(html_names::kIdAttr);
if (!id.IsNull())
element2_->setAttribute(html_names::kIdAttr, id);
element1_->remove(IGNORE_EXCEPTION_FOR_TESTING);
}
void SplitElementCommand::DoReapply() {
if (!element1_)
return;
ExecuteApply();
}
void SplitElementCommand::Trace(Visitor* visitor) const {
visitor->Trace(element1_);
visitor->Trace(element2_);
visitor->Trace(at_child_);
SimpleEditCommand::Trace(visitor);
}
} // namespace blink
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