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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/DocumentFragment.h"
     36 #include "core/dom/TemplateContentDocumentFragment.h"
     37 
     38 namespace WebCore {
     39 
     40 using namespace HTMLNames;
     41 
     42 inline HTMLTemplateElement::HTMLTemplateElement(const QualifiedName& tagName, Document* document)
     43     : HTMLElement(tagName, document)
     44 {
     45     ScriptWrappable::init(this);
     46 }
     47 
     48 HTMLTemplateElement::~HTMLTemplateElement()
     49 {
     50     if (m_content)
     51         m_content->clearHost();
     52 }
     53 
     54 PassRefPtr<HTMLTemplateElement> HTMLTemplateElement::create(const QualifiedName& tagName, Document* document)
     55 {
     56     return adoptRef(new HTMLTemplateElement(tagName, document));
     57 }
     58 
     59 DocumentFragment* HTMLTemplateElement::content() const
     60 {
     61     if (!m_content)
     62         m_content = TemplateContentDocumentFragment::create(document()->ensureTemplateDocument(), this);
     63 
     64     return m_content.get();
     65 }
     66 
     67 PassRefPtr<Node> HTMLTemplateElement::cloneNode(bool deep)
     68 {
     69     if (!deep)
     70         return cloneElementWithoutChildren();
     71 
     72     RefPtr<Node> clone = cloneElementWithChildren();
     73     if (m_content)
     74         content()->cloneChildNodes(toHTMLTemplateElement(clone.get())->content());
     75     return clone.release();
     76 }
     77 
     78 void HTMLTemplateElement::didMoveToNewDocument(Document* oldDocument)
     79 {
     80     HTMLElement::didMoveToNewDocument(oldDocument);
     81     if (!m_content)
     82         return;
     83     document()->ensureTemplateDocument()->adoptIfNeeded(m_content.get());
     84 }
     85 
     86 #ifndef NDEBUG
     87 const HTMLTemplateElement* toHTMLTemplateElement(const Node* node)
     88 {
     89     ASSERT_WITH_SECURITY_IMPLICATION(!node || (node->isHTMLElement() && node->hasTagName(templateTag)));
     90     return static_cast<const HTMLTemplateElement*>(node);
     91 }
     92 #endif
     93 
     94 } // namespace WebCore
     95