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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) 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& href, const KURL& baseURL, 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 #ifdef ANDROID_APPLE_TOUCH_ICON
     97     static void tokenizeRelAttribute(const AtomicString& value, bool& stylesheet, bool& alternate, bool& icon, bool& touchIcon, bool& precomposedTouchIcon, bool& dnsPrefetch);
     98 #else
     99     static void tokenizeRelAttribute(const AtomicString& value, bool& stylesheet, bool& alternate, bool& icon, bool& dnsPrefetch);
    100 #endif
    101 
    102     virtual void addSubresourceAttributeURLs(ListHashSet<KURL>&) const;
    103 
    104     virtual void finishParsingChildren();
    105 
    106 #ifdef ANDROID_INSTRUMENT
    107     // Overridden to resolve the ambiguous
    108     void* operator new(size_t size);
    109     void* operator new[](size_t size);
    110     void operator delete(void* p, size_t size);
    111     void operator delete[](void* p, size_t size);
    112 #endif
    113 
    114 protected:
    115     CachedResourceHandle<CachedCSSStyleSheet> m_cachedSheet;
    116     RefPtr<CSSStyleSheet> m_sheet;
    117     KURL m_url;
    118     String m_type;
    119     String m_media;
    120     int m_disabledState; // 0=unset(default), 1=enabled via script, 2=disabled
    121     bool m_loading;
    122     bool m_alternate;
    123     bool m_isStyleSheet;
    124     bool m_isIcon;
    125 #ifdef ANDROID_APPLE_TOUCH_ICON
    126     bool m_isTouchIcon;
    127     bool m_isPrecomposedTouchIcon;
    128 #endif
    129     bool m_isDNSPrefetch;
    130     bool m_createdByParser;
    131 };
    132 
    133 } //namespace
    134 
    135 #endif
    136