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      1 /*
      2  * Copyright (C) 2012 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 
     33 #include "core/html/HTMLTemplateElement.h"
     34 
     35 #include "core/dom/Document.h"
     36 #include "core/dom/DocumentFragment.h"
     37 #include "core/dom/TemplateContentDocumentFragment.h"
     38 
     39 namespace blink {
     40 
     41 using namespace HTMLNames;
     42 
     43 inline HTMLTemplateElement::HTMLTemplateElement(Document& document)
     44     : HTMLElement(templateTag, document)
     45 {
     46 }
     47 
     48 DEFINE_NODE_FACTORY(HTMLTemplateElement)
     49 
     50 HTMLTemplateElement::~HTMLTemplateElement()
     51 {
     52 #if !ENABLE(OILPAN)
     53     if (m_content)
     54         m_content->clearHost();
     55 #endif
     56 }
     57 
     58 DocumentFragment* HTMLTemplateElement::content() const
     59 {
     60     if (!m_content)
     61         m_content = TemplateContentDocumentFragment::create(document().ensureTemplateDocument(), const_cast<HTMLTemplateElement*>(this));
     62 
     63     return m_content.get();
     64 }
     65 
     66 PassRefPtrWillBeRawPtr<Node> HTMLTemplateElement::cloneNode(bool deep)
     67 {
     68     if (!deep)
     69         return cloneElementWithoutChildren();
     70 
     71     RefPtrWillBeRawPtr<Node> clone = cloneElementWithChildren();
     72     if (m_content)
     73         content()->cloneChildNodes(toHTMLTemplateElement(clone.get())->content());
     74     return clone.release();
     75 }
     76 
     77 void HTMLTemplateElement::didMoveToNewDocument(Document& oldDocument)
     78 {
     79     HTMLElement::didMoveToNewDocument(oldDocument);
     80     if (!m_content)
     81         return;
     82     document().ensureTemplateDocument().adoptIfNeeded(*m_content);
     83 }
     84 
     85 void HTMLTemplateElement::trace(Visitor* visitor)
     86 {
     87     visitor->trace(m_content);
     88     HTMLElement::trace(visitor);
     89 }
     90 
     91 } // namespace blink
     92