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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  * Copyright (C) 2004, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  *
     21  */
     22 
     23 #ifndef HTMLObjectElement_h
     24 #define HTMLObjectElement_h
     25 
     26 #include "core/html/FormAssociatedElement.h"
     27 #include "core/html/HTMLPlugInElement.h"
     28 
     29 namespace blink {
     30 
     31 class HTMLFormElement;
     32 
     33 class HTMLObjectElement FINAL : public HTMLPlugInElement, public FormAssociatedElement {
     34     DEFINE_WRAPPERTYPEINFO();
     35     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLObjectElement);
     36 public:
     37     static PassRefPtrWillBeRawPtr<HTMLObjectElement> create(Document&, HTMLFormElement*, bool createdByParser);
     38     virtual ~HTMLObjectElement();
     39     virtual void trace(Visitor*) OVERRIDE;
     40 
     41     const String& classId() const { return m_classId; }
     42 
     43     virtual HTMLFormElement* formOwner() const OVERRIDE;
     44 
     45     bool containsJavaApplet() const;
     46 
     47     virtual bool hasFallbackContent() const OVERRIDE;
     48     virtual bool useFallbackContent() const OVERRIDE;
     49     virtual void renderFallbackContent() OVERRIDE;
     50 
     51     virtual bool isFormControlElement() const OVERRIDE { return false; }
     52 
     53     virtual bool isEnumeratable() const OVERRIDE { return true; }
     54     virtual bool isInteractiveContent() const OVERRIDE;
     55     virtual bool appendFormData(FormDataList&, bool) OVERRIDE;
     56 
     57     virtual bool isObjectElement() const OVERRIDE { return true; }
     58 
     59     // Implementations of constraint validation API.
     60     // Note that the object elements are always barred from constraint validation.
     61     virtual String validationMessage() const OVERRIDE { return String(); }
     62     bool checkValidity() { return true; }
     63     virtual void setCustomValidity(const String&) OVERRIDE { }
     64 
     65 #if !ENABLE(OILPAN)
     66     using Node::ref;
     67     using Node::deref;
     68 #endif
     69 
     70     virtual bool canContainRangeEndPoint() const OVERRIDE { return useFallbackContent(); }
     71 
     72     bool isExposed() const;
     73 
     74 private:
     75     HTMLObjectElement(Document&, HTMLFormElement*, bool createdByParser);
     76 
     77     virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE;
     78     virtual bool isPresentationAttribute(const QualifiedName&) const OVERRIDE;
     79     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) OVERRIDE;
     80 
     81     virtual InsertionNotificationRequest insertedInto(ContainerNode*) OVERRIDE;
     82     virtual void removedFrom(ContainerNode*) OVERRIDE;
     83 
     84     virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE;
     85     virtual void didMoveToNewDocument(Document& oldDocument) OVERRIDE;
     86 
     87     virtual void childrenChanged(const ChildrenChange&) OVERRIDE;
     88 
     89     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     90     virtual bool hasLegalLinkAttribute(const QualifiedName&) const OVERRIDE;
     91     virtual const QualifiedName& subResourceAttributeName() const OVERRIDE;
     92     virtual const AtomicString imageSourceURL() const OVERRIDE;
     93 
     94     virtual RenderWidget* existingRenderWidget() const OVERRIDE;
     95 
     96     virtual void updateWidgetInternal() OVERRIDE;
     97     void updateDocNamedItem();
     98 
     99     void reattachFallbackContent();
    100 
    101     // FIXME: This function should not deal with url or serviceType
    102     // so that we can better share code between <object> and <embed>.
    103     void parametersForPlugin(Vector<String>& paramNames, Vector<String>& paramValues, String& url, String& serviceType);
    104 
    105     bool hasValidClassId();
    106 
    107     void reloadPluginOnAttributeChange(const QualifiedName&);
    108 
    109 #if !ENABLE(OILPAN)
    110     virtual void refFormAssociatedElement() OVERRIDE { ref(); }
    111     virtual void derefFormAssociatedElement() OVERRIDE { deref(); }
    112 #endif
    113 
    114     virtual bool shouldRegisterAsNamedItem() const OVERRIDE { return true; }
    115     virtual bool shouldRegisterAsExtraNamedItem() const OVERRIDE { return true; }
    116 
    117     String m_classId;
    118     bool m_useFallbackContent : 1;
    119 };
    120 
    121 // Intentionally left unimplemented, template specialization needs to be provided for specific
    122 // return types.
    123 template<typename T> inline const T& toElement(const FormAssociatedElement&);
    124 template<typename T> inline const T* toElement(const FormAssociatedElement*);
    125 
    126 // Make toHTMLObjectElement() accept a FormAssociatedElement as input instead of a Node.
    127 template<> inline const HTMLObjectElement* toElement<HTMLObjectElement>(const FormAssociatedElement* element)
    128 {
    129     ASSERT_WITH_SECURITY_IMPLICATION(!element || !element->isFormControlElement());
    130     ASSERT_WITH_SECURITY_IMPLICATION(!element || !element->isLabelElement());
    131     const HTMLObjectElement* objectElement = static_cast<const HTMLObjectElement*>(element);
    132     // We need to assert after the cast because FormAssociatedElement doesn't
    133     // have hasTagName.
    134     ASSERT_WITH_SECURITY_IMPLICATION(!objectElement || objectElement->hasTagName(HTMLNames::objectTag));
    135     return objectElement;
    136 }
    137 
    138 template<> inline const HTMLObjectElement& toElement<HTMLObjectElement>(const FormAssociatedElement& element)
    139 {
    140     ASSERT_WITH_SECURITY_IMPLICATION(!element.isFormControlElement());
    141     ASSERT_WITH_SECURITY_IMPLICATION(!element.isLabelElement());
    142     const HTMLObjectElement& objectElement = static_cast<const HTMLObjectElement&>(element);
    143     // We need to assert after the cast because FormAssociatedElement doesn't
    144     // have hasTagName.
    145     ASSERT_WITH_SECURITY_IMPLICATION(objectElement.hasTagName(HTMLNames::objectTag));
    146     return objectElement;
    147 }
    148 
    149 } // namespace blink
    150 
    151 #endif // HTMLObjectElement_h
    152