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nsMetaCharsetObserver.h
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00001 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
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00015  * The Original Code is mozilla.org code.
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00017  * The Initial Developer of the Original Code is
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00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
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00037 #ifndef nsMetaCharsetObserverFactory_h__
00038 #define nsMetaCharsetObserverFactory_h__
00039 
00040 #include "nsIFactory.h"
00041 #include "nsIMetaCharsetService.h"
00042 #include "nsIElementObserver.h"
00043 #include "nsIObserver.h"
00044 #include "nsObserverBase.h"
00045 #include "nsWeakReference.h"
00046 
00047 //========================================================================== 
00048 //
00049 // Class declaration for the class 
00050 //
00051 //========================================================================== 
00052 class nsMetaCharsetObserver: public nsIElementObserver, 
00053                              public nsIObserver, 
00054                              public nsObserverBase,
00055                              public nsIMetaCharsetService,
00056                              public nsSupportsWeakReference {
00057 public:
00058   nsMetaCharsetObserver();
00059   virtual ~nsMetaCharsetObserver();
00060 
00061   /* methode for nsIElementObserver */
00062 
00063   /*
00064    *   Subject call observer when the parser hit the tag
00065    *   @param aDocumentID- ID of the document
00066    *   @param aTag- the tag
00067    *   @param numOfAttributes - number of attributes
00068    *   @param nameArray - array of name. 
00069    *   @param valueArray - array of value
00070    */
00071   NS_IMETHOD Notify(PRUint32 aDocumentID, eHTMLTags aTag, PRUint32 numOfAttributes, 
00072                     const PRUnichar* nameArray[], const PRUnichar* valueArray[]);
00073   NS_IMETHOD Notify(PRUint32 aDocumentID, const PRUnichar* aTag, PRUint32 numOfAttributes, 
00074                     const PRUnichar* nameArray[], const PRUnichar* valueArray[]);
00075 
00076   NS_IMETHOD Notify(nsISupports* aWebShell, 
00077                     nsISupports* aChannel,
00078                     const PRUnichar* aTag, 
00079                     const nsStringArray* keys, 
00080                     const nsStringArray* values,
00081                     const PRUint32 aFlags);
00082 
00083   NS_DECL_ISUPPORTS
00084 
00085   /* methode for nsIObserver */
00086   NS_DECL_NSIOBSERVER
00087 
00088   /* methode for nsIMetaCharsetService */
00089   NS_IMETHOD Start();
00090   NS_IMETHOD End();
00091  
00092 private:
00093 
00094   NS_IMETHOD Notify(PRUint32 aDocumentID, PRUint32 numOfAttributes, 
00095                     const PRUnichar* nameArray[], const PRUnichar* valueArray[]);
00096 
00097   NS_IMETHOD Notify(nsISupports* aWebShell, 
00098                     nsISupports* aChannel,
00099                     const nsStringArray* keys, 
00100                     const nsStringArray* values);
00101 
00102   NS_IMETHOD GetCharsetFromCompatibilityTag(const nsStringArray* keys, 
00103                                             const nsStringArray* values, 
00104                                             nsAString& aCharset);
00105 
00106   nsCOMPtr<nsICharsetAlias> mAlias;
00107 
00108   PRBool bMetaCharsetObserverStarted;
00109 };
00110 
00111 #endif // nsMetaCharsetObserverFactory_h__