layout/style/nsICSSLoaderObserver.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 /* internal interface for observing CSS style sheet loads */
   8
   9 #ifndef nsICSSLoaderObserver_h___
  10 #define nsICSSLoaderObserver_h___
  11
  12 #include "nsISupports.h"
  13
  14 #define NS_ICSSLOADEROBSERVER_IID                    \
  15   {                                                  \
  16     0xf51fbf2c, 0xfe4b, 0x4a15, {                    \
  17       0xaf, 0x7e, 0x5e, 0x20, 0x64, 0x5f, 0xaf, 0x58 \
  18     }                                                \
  19   }
  20
  21 namespace mozilla {
  22 class StyleSheet;
  23 }
  24
  25 class nsICSSLoaderObserver : public nsISupports {
  26  public:
  27   NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICSSLOADEROBSERVER_IID)
  28
  29   /**
  30    * StyleSheetLoaded is called after aSheet is marked complete and before any
  31    * load events associated with aSheet are fired.
  32    * @param aSheet the sheet that was loaded. Guaranteed to always be
  33    *        non-null, even if aStatus indicates failure.
  34    * @param aWasDeferred whether the sheet load was deferred, due to it being an
  35    *        alternate sheet, or having a non-matching media list.
  36    * @param aStatus is a success code if the sheet loaded successfully and a
  37    *        failure code otherwise.  Note that successful load of aSheet
  38    *        doesn't indicate anything about whether the data actually parsed
  39    *        as CSS, and doesn't indicate anything about the status of any child
  40    *        sheets of aSheet.
  41    */
  42   NS_IMETHOD StyleSheetLoaded(mozilla::StyleSheet* aSheet, bool aWasDeferred,
  43                               nsresult aStatus) = 0;
  44 };
  45
  46 NS_DEFINE_STATIC_IID_ACCESSOR(nsICSSLoaderObserver, NS_ICSSLOADEROBSERVER_IID)
  47
  48 #endif  // nsICSSLoaderObserver_h___