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/*
* Copyright (C) 2012 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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/html/html_template_element.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/document_fragment.h"
#include "third_party/blink/renderer/core/dom/template_content_document_fragment.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
HTMLTemplateElement::HTMLTemplateElement(Document& document)
: HTMLElement(html_names::kTemplateTag, document) {
UseCounter::Count(document, WebFeature::kHTMLTemplateElement);
}
HTMLTemplateElement::~HTMLTemplateElement() = default;
DocumentFragment* HTMLTemplateElement::content() const {
if (!content_)
content_ = MakeGarbageCollected<TemplateContentDocumentFragment>(
GetDocument().EnsureTemplateDocument(),
const_cast<HTMLTemplateElement*>(this));
return content_.Get();
}
// https://html.spec.whatwg.org/C/#the-template-element:concept-node-clone-ext
void HTMLTemplateElement::CloneNonAttributePropertiesFrom(
const Element& source,
CloneChildrenFlag flag) {
if (flag == CloneChildrenFlag::kSkip)
return;
auto& html_template_element = To<HTMLTemplateElement>(source);
if (html_template_element.content_)
content()->CloneChildNodesFrom(*html_template_element.content());
}
void HTMLTemplateElement::DidMoveToNewDocument(Document& old_document) {
HTMLElement::DidMoveToNewDocument(old_document);
if (!content_)
return;
GetDocument().EnsureTemplateDocument().AdoptIfNeeded(*content_);
}
void HTMLTemplateElement::Trace(Visitor* visitor) {
visitor->Trace(content_);
HTMLElement::Trace(visitor);
}
} // namespace blink