layout/base/nsStyleSheetService.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * IBM Corporation.
  19  * Portions created by the Initial Developer are Copyright (C) 2005
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *  Brian Ryner <bryner@brianryner.com>
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 /* implementation of interface for managing user and user-agent style sheets */
  40
  41 #ifndef nsStyleSheetService_h_
  42 #define nsStyleSheetService_h_
  43
  44 #include "nsIStyleSheetService.h"
  45 #include "nsCOMArray.h"
  46 #include "nsIStyleSheet.h"
  47
  48 class nsISimpleEnumerator;
  49 class nsICategoryManager;
  50
  51 #define NS_STYLESHEETSERVICE_CID \
  52 {0xfcca6f83, 0x9f7d, 0x44e4, {0xa7, 0x4b, 0xb5, 0x94, 0x33, 0xe6, 0xc8, 0xc3}}
  53
  54 #define NS_STYLESHEETSERVICE_CONTRACTID \
  55   "@mozilla.org/content/style-sheet-service;1"
  56
  57 class nsStyleSheetService : public nsIStyleSheetService
  58 {
  59  public:
  60   nsStyleSheetService() NS_HIDDEN;
  61   ~nsStyleSheetService() NS_HIDDEN;
  62
  63   NS_DECL_ISUPPORTS
  64   NS_DECL_NSISTYLESHEETSERVICE
  65
  66   NS_HIDDEN_(nsresult) Init();
  67
  68   nsCOMArray<nsIStyleSheet>* AgentStyleSheets() { return &mSheets[AGENT_SHEET]; }
  69   nsCOMArray<nsIStyleSheet>* UserStyleSheets() { return &mSheets[USER_SHEET]; }
  70
  71   static nsStyleSheetService *gInstance;
  72
  73  private:
  74
  75   NS_HIDDEN_(void) RegisterFromEnumerator(nsICategoryManager  *aManager,
  76                                           const char          *aCategory,
  77                                           nsISimpleEnumerator *aEnumerator,
  78                                           PRUint32             aSheetType);
  79
  80   NS_HIDDEN_(PRInt32) FindSheetByURI(const nsCOMArray<nsIStyleSheet> &sheets,
  81                                      nsIURI *sheetURI);
  82
  83   // Like LoadAndRegisterSheet, but doesn't notify.  If succesful, the
  84   // new sheet will be the last sheet in mSheets[aSheetType].
  85   NS_HIDDEN_(nsresult) LoadAndRegisterSheetInternal(nsIURI *aSheetURI,
  86                                                     PRUint32 aSheetType);
  87
  88   nsCOMArray<nsIStyleSheet> mSheets[2];
  89 };
  90
  91 #endif