layout/base/nsStyleSheetService.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 /* implementation of interface for managing user and user-agent style sheets */
   8
   9 #ifndef nsStyleSheetService_h_
  10 #define nsStyleSheetService_h_
  11
  12 #include "nsCOMArray.h"
  13 #include "nsCOMPtr.h"
  14 #include "nsIMemoryReporter.h"
  15 #include "nsIStyleSheetService.h"
  16 #include "mozilla/Attributes.h"
  17 #include "mozilla/MemoryReporting.h"
  18
  19 class nsICategoryManager;
  20 class nsIMemoryReporter;
  21 class nsISimpleEnumerator;
  22 class nsIStyleSheet;
  23
  24 #define NS_STYLESHEETSERVICE_CID \
  25 {0xfcca6f83, 0x9f7d, 0x44e4, {0xa7, 0x4b, 0xb5, 0x94, 0x33, 0xe6, 0xc8, 0xc3}}
  26
  27 #define NS_STYLESHEETSERVICE_CONTRACTID \
  28   "@mozilla.org/content/style-sheet-service;1"
  29
  30 class nsStyleSheetService MOZ_FINAL
  31   : public nsIStyleSheetService
  32   , public nsIMemoryReporter
  33 {
  34  public:
  35   nsStyleSheetService();
  36
  37   NS_DECL_ISUPPORTS
  38   NS_DECL_NSISTYLESHEETSERVICE
  39   NS_DECL_NSIMEMORYREPORTER
  40
  41   nsresult Init();
  42
  43   nsCOMArray<nsIStyleSheet>* AgentStyleSheets() { return &mSheets[AGENT_SHEET]; }
  44   nsCOMArray<nsIStyleSheet>* UserStyleSheets() { return &mSheets[USER_SHEET]; }
  45   nsCOMArray<nsIStyleSheet>* AuthorStyleSheets() { return &mSheets[AUTHOR_SHEET]; }
  46
  47   size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
  48
  49   static nsStyleSheetService *GetInstance();
  50   static nsStyleSheetService *gInstance;
  51
  52  private:
  53   ~nsStyleSheetService();
  54
  55   void RegisterFromEnumerator(nsICategoryManager  *aManager,
  56                                           const char          *aCategory,
  57                                           nsISimpleEnumerator *aEnumerator,
  58                                           uint32_t             aSheetType);
  59
  60   int32_t FindSheetByURI(const nsCOMArray<nsIStyleSheet> &sheets,
  61                                      nsIURI *sheetURI);
  62
  63   // Like LoadAndRegisterSheet, but doesn't notify.  If successful, the
  64   // new sheet will be the last sheet in mSheets[aSheetType].
  65   nsresult LoadAndRegisterSheetInternal(nsIURI *aSheetURI,
  66                                         uint32_t aSheetType);
  67
  68   nsCOMArray<nsIStyleSheet> mSheets[3];
  69 };
  70
  71 #endif