WebCore/HTMLLinkElement.h

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  * Copyright (C) 2003, 2008 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 HTMLLinkElement_h
  24 #define HTMLLinkElement_h
  25
  26 #include "CSSStyleSheet.h"
  27 #include "CachedResourceClient.h"
  28 #include "CachedResourceHandle.h"
  29 #include "HTMLElement.h"
  30
  31 namespace WebCore {
  32
  33 class CachedCSSStyleSheet;
  34 class KURL;
  35
  36 class HTMLLinkElement : public HTMLElement, public CachedResourceClient {
  37 public:
  38     HTMLLinkElement(const QualifiedName&, Document*, bool createdByParser);
  39     ~HTMLLinkElement();
  40
  41     virtual HTMLTagStatus endTagRequirement() const { return TagStatusForbidden; }
  42     virtual int tagPriority() const { return 0; }
  43
  44     bool disabled() const;
  45     void setDisabled(bool);
  46
  47     String charset() const;
  48     void setCharset(const String&);
  49
  50     KURL href() const;
  51     void setHref(const String&);
  52
  53     String hreflang() const;
  54     void setHreflang(const String&);
  55
  56     String media() const;
  57     void setMedia(const String&);
  58
  59     String rel() const;
  60     void setRel(const String&);
  61
  62     String rev() const;
  63     void setRev(const String&);
  64
  65     virtual String target() const;
  66     void setTarget(const String&);
  67
  68     String type() const;
  69     void setType(const String&);
  70
  71     StyleSheet* sheet() const;
  72
  73     // overload from HTMLElement
  74     virtual void parseMappedAttribute(MappedAttribute*);
  75
  76     void process();
  77
  78     virtual void insertedIntoDocument();
  79     virtual void removedFromDocument();
  80
  81     // from CachedResourceClient
  82     virtual void setCSSStyleSheet(const String &url, const String& charset, const CachedCSSStyleSheet* sheet);
  83     bool isLoading() const;
  84     virtual bool sheetLoaded();
  85
  86     bool isAlternate() const { return m_disabledState == 0 && m_alternate; }
  87     bool isDisabled() const { return m_disabledState == 2; }
  88     bool isEnabledViaScript() const { return m_disabledState == 1; }
  89     bool isIcon() const { return m_isIcon; }
  90
  91     int disabledState() { return m_disabledState; }
  92     void setDisabledState(bool _disabled);
  93
  94     virtual bool isURLAttribute(Attribute*) const;
  95
  96     static void tokenizeRelAttribute(const AtomicString& value, bool& stylesheet, bool& alternate, bool& icon, bool& dnsPrefetch);
  97
  98     virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
  99
 100     virtual void finishParsingChildren();
 101
 102 protected:
 103     CachedResourceHandle<CachedCSSStyleSheet> m_cachedSheet;
 104     RefPtr<CSSStyleSheet> m_sheet;
 105     KURL m_url;
 106     String m_type;
 107     String m_media;
 108     int m_disabledState; // 0=unset(default), 1=enabled via script, 2=disabled
 109     bool m_loading;
 110     bool m_alternate;
 111     bool m_isStyleSheet;
 112     bool m_isIcon;
 113     bool m_isDNSPrefetch;
 114     bool m_createdByParser;
 115 };
 116
 117 } //namespace
 118
 119 #endif