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nsStyleLinkElement.h
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
00002  * 
00003  * ***** BEGIN LICENSE BLOCK *****
00004  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00005  *
00006  * The contents of this file are subject to the Mozilla Public License Version
00007  * 1.1 (the "License"); you may not use this file except in compliance with
00008  * the License. You may obtain a copy of the License at
00009  * http://www.mozilla.org/MPL/
00010  *
00011  * Software distributed under the License is distributed on an "AS IS" basis,
00012  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00013  * for the specific language governing rights and limitations under the
00014  * License.
00015  *
00016  * The Original Code is Mozilla Communicator client code, released
00017  * March 31, 1998.
00018  *
00019  * The Initial Developer of the Original Code is
00020  * Netscape Communications Corporation.
00021  * Portions created by the Initial Developer are Copyright (C) 1998-1999
00022  * the Initial Developer. All Rights Reserved.
00023  *
00024  * Contributor(s):
00025  *
00026  * Alternatively, the contents of this file may be used under the terms of
00027  * either of the GNU General Public License Version 2 or later (the "GPL"),
00028  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00029  * in which case the provisions of the GPL or the LGPL are applicable instead
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00038  * ***** END LICENSE BLOCK ***** */
00039 #ifndef nsStyleLinkElement_h___
00040 #define nsStyleLinkElement_h___
00041 
00042 #include "nsCOMPtr.h"
00043 #include "nsIDOMLinkStyle.h"
00044 #include "nsIStyleSheetLinkingElement.h"
00045 #include "nsIStyleSheet.h"
00046 #include "nsIParser.h"
00047 
00048 class nsIDocument;
00049 class nsStringArray;
00050 
00051 class nsStyleLinkElement : public nsIDOMLinkStyle,
00052                            public nsIStyleSheetLinkingElement
00053 {
00054 public:
00055   nsStyleLinkElement();
00056   virtual ~nsStyleLinkElement();
00057 
00058   NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr) = 0;
00059 
00060   // nsIDOMLinkStyle
00061   NS_DECL_NSIDOMLINKSTYLE
00062 
00063   // nsIStyleSheetLinkingElement  
00064   NS_IMETHOD SetStyleSheet(nsIStyleSheet* aStyleSheet);
00065   NS_IMETHOD GetStyleSheet(nsIStyleSheet*& aStyleSheet);
00066   NS_IMETHOD InitStyleLinkElement(nsIParser *aParser, PRBool aDontLoadStyle);
00067   NS_IMETHOD UpdateStyleSheet(nsIDocument *aOldDocument = nsnull,
00068                               nsICSSLoaderObserver* aObserver = nsnull);
00069   NS_IMETHOD SetEnableUpdates(PRBool aEnableUpdates);
00070   NS_IMETHOD GetCharset(nsAString& aCharset);
00071   virtual void SetLineNumber(PRUint32 aLineNumber);
00072 
00073   static void ParseLinkTypes(const nsAString& aTypes, nsStringArray& aResult);
00074 
00075 protected:
00076   virtual void GetStyleSheetURL(PRBool* aIsInline,
00077                                 nsIURI** aURI) = 0;
00078   virtual void GetStyleSheetInfo(nsAString& aTitle,
00079                                  nsAString& aType,
00080                                  nsAString& aMedia,
00081                                  PRBool* aIsAlternate) = 0;
00082 
00083 
00084   nsCOMPtr<nsIStyleSheet> mStyleSheet;
00085   nsCOMPtr<nsIParser> mParser;
00086   PRPackedBool mDontLoadStyle;
00087   PRPackedBool mUpdatesEnabled;
00088   PRUint32 mLineNumber;
00089 };
00090 
00091 #endif /* nsStyleLinkElement_h___ */
00092