third_party/WebKit/Source/core/html/HTMLObjectElement.h

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@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/CoreExport.h"
  27 #include "core/html/FormAssociatedElement.h"
  28 #include "core/html/HTMLPlugInElement.h"
  29
  30 namespace blink {
  31
  32 class HTMLFormElement;
  33
  34 class CORE_EXPORT HTMLObjectElement final : public HTMLPlugInElement, public FormAssociatedElement {
  35     DEFINE_WRAPPERTYPEINFO();
  36     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(HTMLObjectElement);
  37 public:
  38     static PassRefPtrWillBeRawPtr<HTMLObjectElement> create(Document&, HTMLFormElement*, bool createdByParser);
  39     ~HTMLObjectElement() override;
  40     DECLARE_VIRTUAL_TRACE();
  41
  42     const String& classId() const { return m_classId; }
  43
  44     HTMLFormElement* formOwner() const override;
  45
  46     bool containsJavaApplet() const;
  47
  48     bool hasFallbackContent() const override;
  49     bool useFallbackContent() const override;
  50     void renderFallbackContent() override;
  51
  52     bool isFormControlElement() const override { return false; }
  53
  54     bool isEnumeratable() const override { return true; }
  55     bool isInteractiveContent() const override;
  56     bool appendFormData(FormDataList&, bool) override;
  57
  58     // Implementations of constraint validation API.
  59     // Note that the object elements are always barred from constraint validation.
  60     String validationMessage() const override { return String(); }
  61     bool checkValidity() { return true; }
  62     bool reportValidity() { return true; }
  63     void setCustomValidity(const String&) override { }
  64
  65 #if !ENABLE(OILPAN)
  66     using Node::ref;
  67     using Node::deref;
  68 #endif
  69
  70     bool canContainRangeEndPoint() const override { return useFallbackContent(); }
  71
  72     bool isExposed() const;
  73
  74 private:
  75     HTMLObjectElement(Document&, HTMLFormElement*, bool createdByParser);
  76
  77     void parseAttribute(const QualifiedName&, const AtomicString&) override;
  78     bool isPresentationAttribute(const QualifiedName&) const override;
  79     void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
  80
  81     InsertionNotificationRequest insertedInto(ContainerNode*) override;
  82     void removedFrom(ContainerNode*) override;
  83
  84     void didMoveToNewDocument(Document& oldDocument) override;
  85
  86     void childrenChanged(const ChildrenChange&) override;
  87
  88     bool isURLAttribute(const Attribute&) const override;
  89     bool hasLegalLinkAttribute(const QualifiedName&) const override;
  90     const QualifiedName& subResourceAttributeName() const override;
  91     const AtomicString imageSourceURL() const override;
  92
  93     LayoutPart* existingLayoutPart() const override;
  94
  95     void updateWidgetInternal() override;
  96     void updateDocNamedItem();
  97
  98     void reattachFallbackContent();
  99
 100     // FIXME: This function should not deal with url or serviceType
 101     // so that we can better share code between <object> and <embed>.
 102     void parametersForPlugin(Vector<String>& paramNames, Vector<String>& paramValues, String& url, String& serviceType);
 103
 104     bool hasValidClassId();
 105
 106     void reloadPluginOnAttributeChange(const QualifiedName&);
 107
 108 #if !ENABLE(OILPAN)
 109     void refFormAssociatedElement() override { ref(); }
 110     void derefFormAssociatedElement() override { deref(); }
 111 #endif
 112
 113     bool shouldRegisterAsNamedItem() const override { return true; }
 114     bool shouldRegisterAsExtraNamedItem() const override { return true; }
 115
 116     String m_classId;
 117     bool m_useFallbackContent : 1;
 118 };
 119
 120 // Intentionally left unimplemented, template specialization needs to be provided for specific
 121 // return types.
 122 template<typename T> inline const T& toElement(const FormAssociatedElement&);
 123 template<typename T> inline const T* toElement(const FormAssociatedElement*);
 124
 125 // Make toHTMLObjectElement() accept a FormAssociatedElement as input instead of a Node.
 126 template<> inline const HTMLObjectElement* toElement<HTMLObjectElement>(const FormAssociatedElement* element)
 127 {
 128     ASSERT_WITH_SECURITY_IMPLICATION(!element || !element->isFormControlElement());
 129     ASSERT_WITH_SECURITY_IMPLICATION(!element || !element->isLabelElement());
 130     const HTMLObjectElement* objectElement = static_cast<const HTMLObjectElement*>(element);
 131     // We need to assert after the cast because FormAssociatedElement doesn't
 132     // have hasTagName.
 133     ASSERT_WITH_SECURITY_IMPLICATION(!objectElement || objectElement->hasTagName(HTMLNames::objectTag));
 134     return objectElement;
 135 }
 136
 137 template<> inline const HTMLObjectElement& toElement<HTMLObjectElement>(const FormAssociatedElement& element)
 138 {
 139     ASSERT_WITH_SECURITY_IMPLICATION(!element.isFormControlElement());
 140     ASSERT_WITH_SECURITY_IMPLICATION(!element.isLabelElement());
 141     const HTMLObjectElement& objectElement = static_cast<const HTMLObjectElement&>(element);
 142     // We need to assert after the cast because FormAssociatedElement doesn't
 143     // have hasTagName.
 144     ASSERT_WITH_SECURITY_IMPLICATION(objectElement.hasTagName(HTMLNames::objectTag));
 145     return objectElement;
 146 }
 147
 148 } // namespace blink
 149
 150 #endif // HTMLObjectElement_h