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/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     DECLARE_VIRTUAL_TRACE();
  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     bool reportValidity() { return true; }
  64     virtual void setCustomValidity(const String&) override { }
  65
  66 #if !ENABLE(OILPAN)
  67     using Node::ref;
  68     using Node::deref;
  69 #endif
  70
  71     virtual bool canContainRangeEndPoint() const override { return useFallbackContent(); }
  72
  73     bool isExposed() const;
  74
  75 private:
  76     HTMLObjectElement(Document&, HTMLFormElement*, bool createdByParser);
  77
  78     virtual void parseAttribute(const QualifiedName&, const AtomicString&) override;
  79     virtual bool isPresentationAttribute(const QualifiedName&) const override;
  80     virtual void collectStyleForPresentationAttribute(const QualifiedName&, const AtomicString&, MutableStylePropertySet*) override;
  81
  82     virtual InsertionNotificationRequest insertedInto(ContainerNode*) override;
  83     virtual void removedFrom(ContainerNode*) override;
  84
  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 LayoutPart* existingLayoutPart() 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