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

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
   5  * Copyright (C) 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #ifndef HTMLAnchorElement_h
  25 #define HTMLAnchorElement_h
  26
  27 #include "core/CoreExport.h"
  28 #include "core/HTMLNames.h"
  29 #include "core/dom/DOMURLUtils.h"
  30 #include "core/dom/Document.h"
  31 #include "core/html/HTMLElement.h"
  32 #include "platform/LinkHash.h"
  33
  34 namespace blink {
  35
  36 // Link relation bitmask values.
  37 // FIXME: Uncomment as the various link relations are implemented.
  38 enum {
  39 //     RelationAlternate   = 0x00000001,
  40 //     RelationArchives    = 0x00000002,
  41 //     RelationAuthor      = 0x00000004,
  42 //     RelationBoomark     = 0x00000008,
  43 //     RelationExternal    = 0x00000010,
  44 //     RelationFirst       = 0x00000020,
  45 //     RelationHelp        = 0x00000040,
  46 //     RelationIndex       = 0x00000080,
  47 //     RelationLast        = 0x00000100,
  48 //     RelationLicense     = 0x00000200,
  49 //     RelationNext        = 0x00000400,
  50 //     RelationNoFolow    = 0x00000800,
  51     RelationNoReferrer     = 0x00001000,
  52 //     RelationPrev        = 0x00002000,
  53 //     RelationSearch      = 0x00004000,
  54 //     RelationSidebar     = 0x00008000,
  55 //     RelationTag         = 0x00010000,
  56 //     RelationUp          = 0x00020000,
  57 };
  58
  59 class CORE_EXPORT HTMLAnchorElement : public HTMLElement, public DOMURLUtils {
  60     DEFINE_WRAPPERTYPEINFO();
  61 public:
  62     static PassRefPtrWillBeRawPtr<HTMLAnchorElement> create(Document&);
  63
  64     ~HTMLAnchorElement() override;
  65
  66     KURL href() const;
  67     void setHref(const AtomicString&);
  68
  69     const AtomicString& name() const;
  70
  71     KURL url() const final;
  72     void setURL(const KURL&) final;
  73
  74     String input() const final;
  75     void setInput(const String&) final;
  76
  77     bool isLiveLink() const final;
  78
  79     bool willRespondToMouseClickEvents() final;
  80
  81     bool hasRel(uint32_t relation) const;
  82     void setRel(const AtomicString&);
  83
  84     LinkHash visitedLinkHash() const;
  85     void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; }
  86
  87     void sendPings(const KURL& destinationURL) const;
  88
  89 protected:
  90     HTMLAnchorElement(const QualifiedName&, Document&);
  91
  92     void attributeWillChange(const QualifiedName&, const AtomicString& oldValue, const AtomicString& newValue) override;
  93     void parseAttribute(const QualifiedName&, const AtomicString&) override;
  94     bool supportsFocus() const override;
  95
  96 private:
  97     bool shouldHaveFocusAppearance() const final;
  98     void dispatchFocusEvent(Element* oldFocusedElement, WebFocusType, InputDeviceCapabilities* sourceCapabilities) override;
  99     void dispatchBlurEvent(Element* newFocusedElement, WebFocusType, InputDeviceCapabilities* sourceCapabilities) override;
 100     bool isMouseFocusable() const override;
 101     bool isKeyboardFocusable() const override;
 102     void defaultEventHandler(Event*) final;
 103     void setActive(bool = true) final;
 104     void accessKeyAction(bool sendMouseEvents) final;
 105     bool isURLAttribute(const Attribute&) const final;
 106     bool hasLegalLinkAttribute(const QualifiedName&) const final;
 107     bool canStartSelection() const final;
 108     short tabIndex() const final;
 109     bool draggable() const final;
 110     bool isInteractiveContent() const final;
 111     InsertionNotificationRequest insertedInto(ContainerNode*) override;
 112     void handleClick(Event*);
 113
 114     uint32_t m_linkRelations;
 115     mutable LinkHash m_cachedVisitedLinkHash;
 116     bool m_wasFocusedByMouse;
 117 };
 118
 119 inline LinkHash HTMLAnchorElement::visitedLinkHash() const
 120 {
 121     if (!m_cachedVisitedLinkHash)
 122         m_cachedVisitedLinkHash = blink::visitedLinkHash(document().baseURL(), fastGetAttribute(HTMLNames::hrefAttr));
 123     return m_cachedVisitedLinkHash;
 124 }
 125
 126 // Functions shared with the other anchor elements (i.e., SVG).
 127
 128 bool isEnterKeyKeydownEvent(Event*);
 129 bool isLinkClick(Event*);
 130
 131 } // namespace blink
 132
 133 #endif // HTMLAnchorElement_h