1 /* 2 * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 1999 Antti Koivisto (koivisto (at) kde.org) 4 * (C) 2000 Simon Hausmann <hausmann (at) 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 "HTMLNames.h" 28 #include "core/dom/DOMURLUtils.h" 29 #include "core/html/HTMLElement.h" 30 #include "platform/LinkHash.h" 31 32 namespace WebCore { 33 34 // Link relation bitmask values. 35 // FIXME: Uncomment as the various link relations are implemented. 36 enum { 37 // RelationAlternate = 0x00000001, 38 // RelationArchives = 0x00000002, 39 // RelationAuthor = 0x00000004, 40 // RelationBoomark = 0x00000008, 41 // RelationExternal = 0x00000010, 42 // RelationFirst = 0x00000020, 43 // RelationHelp = 0x00000040, 44 // RelationIndex = 0x00000080, 45 // RelationLast = 0x00000100, 46 // RelationLicense = 0x00000200, 47 // RelationNext = 0x00000400, 48 // RelationNoFolow = 0x00000800, 49 RelationNoReferrer = 0x00001000, 50 // RelationPrev = 0x00002000, 51 // RelationSearch = 0x00004000, 52 // RelationSidebar = 0x00008000, 53 // RelationTag = 0x00010000, 54 // RelationUp = 0x00020000, 55 }; 56 57 class HTMLAnchorElement : public HTMLElement, public DOMURLUtils { 58 public: 59 static PassRefPtr<HTMLAnchorElement> create(Document&); 60 static PassRefPtr<HTMLAnchorElement> create(const QualifiedName&, Document&); 61 62 virtual ~HTMLAnchorElement(); 63 64 KURL href() const; 65 void setHref(const AtomicString&); 66 67 const AtomicString& name() const; 68 69 virtual KURL url() const OVERRIDE; 70 virtual void setURL(const KURL&) OVERRIDE; 71 72 virtual String input() const OVERRIDE; 73 virtual void setInput(const String&) OVERRIDE; 74 75 String text(); 76 77 bool isLiveLink() const; 78 79 virtual bool willRespondToMouseClickEvents() OVERRIDE; 80 81 bool hasRel(uint32_t relation) const; 82 void setRel(const String&); 83 84 LinkHash visitedLinkHash() const; 85 void invalidateCachedVisitedLinkHash() { m_cachedVisitedLinkHash = 0; } 86 87 protected: 88 HTMLAnchorElement(const QualifiedName&, Document&); 89 90 virtual void parseAttribute(const QualifiedName&, const AtomicString&) OVERRIDE; 91 92 private: 93 virtual bool supportsFocus() const; 94 virtual bool isMouseFocusable() const; 95 virtual bool isKeyboardFocusable() const OVERRIDE; 96 virtual void defaultEventHandler(Event*); 97 virtual void setActive(bool = true) OVERRIDE FINAL; 98 virtual void accessKeyAction(bool sendMouseEvents); 99 virtual bool isURLAttribute(const Attribute&) const OVERRIDE; 100 virtual bool canStartSelection() const; 101 virtual String target() const; 102 virtual short tabIndex() const; 103 virtual bool draggable() const; 104 virtual bool isInteractiveContent() const OVERRIDE; 105 106 void sendPings(const KURL& destinationURL); 107 108 void handleClick(Event*); 109 110 enum EventType { 111 MouseEventWithoutShiftKey, 112 MouseEventWithShiftKey, 113 NonMouseEvent, 114 }; 115 static EventType eventType(Event*); 116 bool treatLinkAsLiveForEventType(EventType) const; 117 118 Element* rootEditableElementForSelectionOnMouseDown() const; 119 void setRootEditableElementForSelectionOnMouseDown(Element*); 120 void clearRootEditableElementForSelectionOnMouseDown(); 121 122 class PrefetchEventHandler; 123 PrefetchEventHandler* prefetchEventHandler(); 124 125 bool m_hasRootEditableElementForSelectionOnMouseDown : 1; 126 bool m_wasShiftKeyDownOnMouseDown : 1; 127 uint32_t m_linkRelations : 30; 128 OwnPtr<PrefetchEventHandler> m_prefetchEventHandler; 129 mutable LinkHash m_cachedVisitedLinkHash; 130 }; 131 132 inline LinkHash HTMLAnchorElement::visitedLinkHash() const 133 { 134 if (!m_cachedVisitedLinkHash) 135 m_cachedVisitedLinkHash = WebCore::visitedLinkHash(document().baseURL(), fastGetAttribute(HTMLNames::hrefAttr)); 136 return m_cachedVisitedLinkHash; 137 } 138 139 // Functions shared with the other anchor elements (i.e., SVG). 140 141 bool isEnterKeyKeydownEvent(Event*); 142 bool isLinkClick(Event*); 143 144 inline bool isHTMLAnchorElement(const Node* node) 145 { 146 return node->hasTagName(HTMLNames::aTag); 147 } 148 149 inline bool isHTMLAnchorElement(const Element* element) 150 { 151 return element->hasTagName(HTMLNames::aTag); 152 } 153 154 inline bool isHTMLAnchorElement(const Element& element) 155 { 156 return element.hasTagName(HTMLNames::aTag); 157 } 158 159 DEFINE_NODE_TYPE_CASTS(HTMLAnchorElement, hasTagName(HTMLNames::aTag)); 160 161 } // namespace WebCore 162 163 #endif // HTMLAnchorElement_h 164
