widget/RemoteLookAndFeel.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
   2  * vim: sw=2 ts=8 et :
   3  */
   4 /* This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   7
   8 #ifndef mozilla_widget_RemoteLookAndFeel_h__
   9 #define mozilla_widget_RemoteLookAndFeel_h__
  10
  11 #include "mozilla/widget/nsXPLookAndFeel.h"
  12 #include "mozilla/widget/LookAndFeelTypes.h"
  13
  14 namespace mozilla::widget {
  15
  16 /**
  17  * A LookAndFeel implementation whose native values are provided by the
  18  * parent process.
  19  */
  20 class RemoteLookAndFeel final : public nsXPLookAndFeel {
  21  public:
  22   explicit RemoteLookAndFeel(FullLookAndFeel&& aTables);
  23
  24   virtual ~RemoteLookAndFeel();
  25
  26   void NativeInit() override {}
  27
  28   nsresult NativeGetInt(IntID, int32_t& aResult) override;
  29   nsresult NativeGetFloat(FloatID, float& aResult) override;
  30   nsresult NativeGetColor(ColorID, ColorScheme, nscolor& aResult) override;
  31   bool NativeGetFont(FontID aID, nsString& aFontName,
  32                      gfxFontStyle& aFontStyle) override;
  33
  34   char16_t GetPasswordCharacterImpl() override;
  35   bool GetEchoPasswordImpl() override;
  36
  37   // Sets the LookAndFeel data to be used by this content process' singleton
  38   // RemoteLookAndFeel object.
  39   void SetDataImpl(FullLookAndFeel&& aTables) override;
  40
  41   // Extracts the data from the platform's default LookAndFeel implementation.
  42   //
  43   // This is called in the parent process to obtain the data to send down to
  44   // content processes when they are created (and when the OS theme changes).
  45   //
  46   // Note that the pointer returned from here is only valid until the next time
  47   // ClearCachedData is called.
  48   static const FullLookAndFeel* ExtractData();
  49
  50   // Clears any cached extracted data from the platform's default LookAndFeel
  51   // implementation.
  52   //
  53   // This is called in the parent process when the default LookAndFeel is
  54   // refreshed, to invalidate sCachedLookAndFeelData.
  55   static void ClearCachedData();
  56
  57  private:
  58   LookAndFeelTables mTables;
  59 };
  60
  61 }  // namespace mozilla::widget
  62
  63 #endif  // mozilla_widget_RemoteLookAndFeel_h__