parser/htmlparser/src/nsParserService.h

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  38 #ifndef NS_PARSERSERVICE_H__
  39 #define NS_PARSERSERVICE_H__
  40
  41 #include "nsIParserService.h"
  42 #include "nsDTDUtils.h"
  43 #include "nsVoidArray.h"
  44
  45 extern "C" int MOZ_XMLIsLetter(const char* ptr);
  46 extern "C" int MOZ_XMLIsNCNameChar(const char* ptr);
  47 extern "C" int MOZ_XMLTranslateEntity(const char* ptr, const char* end,
  48                                       const char** next, PRUnichar* result);
  49
  50 class nsParserService : public nsIParserService {
  51 public:
  52   nsParserService();
  53   virtual ~nsParserService();
  54
  55   NS_DECL_ISUPPORTS
  56
  57   PRInt32 HTMLAtomTagToId(nsIAtom* aAtom) const;
  58
  59   PRInt32 HTMLCaseSensitiveAtomTagToId(nsIAtom* aAtom) const;
  60
  61   PRInt32 HTMLStringTagToId(const nsAString& aTag) const;
  62
  63   const PRUnichar *HTMLIdToStringTag(PRInt32 aId) const;
  64
  65   nsIAtom *HTMLIdToAtomTag(PRInt32 aId) const;
  66
  67   NS_IMETHOD HTMLConvertEntityToUnicode(const nsAString& aEntity,
  68                                         PRInt32* aUnicode) const;
  69   NS_IMETHOD HTMLConvertUnicodeToEntity(PRInt32 aUnicode,
  70                                         nsCString& aEntity) const;
  71   NS_IMETHOD IsContainer(PRInt32 aId, PRBool& aIsContainer) const;
  72   NS_IMETHOD IsBlock(PRInt32 aId, PRBool& aIsBlock) const;
  73
  74    // Observer mechanism
  75   NS_IMETHOD RegisterObserver(nsIElementObserver* aObserver,
  76                               const nsAString& aTopic,
  77                               const eHTMLTags* aTags = nsnull);
  78
  79   NS_IMETHOD UnregisterObserver(nsIElementObserver* aObserver,
  80                                 const nsAString& aTopic);
  81   NS_IMETHOD GetTopicObservers(const nsAString& aTopic,
  82                                nsIObserverEntry** aEntry);
  83
  84   nsresult CheckQName(const nsAString& aQName,
  85                       PRBool aNamespaceAware, const PRUnichar** aColon);
  86
  87   PRBool IsXMLLetter(PRUnichar aChar)
  88   {
  89     return !!MOZ_XMLIsLetter(reinterpret_cast<const char*>(&aChar));
  90   }
  91   PRBool IsXMLNCNameChar(PRUnichar aChar)
  92   {
  93     return !!MOZ_XMLIsNCNameChar(reinterpret_cast<const char*>(&aChar));
  94   }
  95   PRUint32 DecodeEntity(const PRUnichar* aStart, const PRUnichar* aEnd,
  96                         const PRUnichar** aNext, PRUnichar* aResult)
  97   {
  98     *aNext = nsnull;
  99     return MOZ_XMLTranslateEntity(reinterpret_cast<const char*>(aStart),
 100                                   reinterpret_cast<const char*>(aEnd),
 101                                   reinterpret_cast<const char**>(aNext),
 102                                   aResult);
 103   }
 104
 105 protected:
 106   nsObserverEntry* GetEntry(const nsAString& aTopic);
 107   nsresult CreateEntry(const nsAString& aTopic,
 108                        nsObserverEntry** aEntry);
 109
 110   nsDeque  mEntries;  //each topic holds a list of observers per tag.
 111   PRBool   mHaveNotifiedCategoryObservers;
 112 };
 113
 114 #endif