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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
#ifndef __nsXPLookAndFeel
#define __nsXPLookAndFeel
#include "mozilla/Maybe.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/widget/LookAndFeelTypes.h"
#include "nsTArray.h"
class nsLookAndFeel;
class nsXPLookAndFeel : public mozilla::LookAndFeel {
using FullLookAndFeel = mozilla::widget::FullLookAndFeel;
using LookAndFeelFont = mozilla::widget::LookAndFeelFont;
virtual ~nsXPLookAndFeel();
static nsXPLookAndFeel* GetInstance();
static void Shutdown();
void Init();
// Gets the pref name for a given color, just for debugging purposes.
static const char* GetColorPrefName(ColorID);
// These functions will return a value specified by an override pref, if it
// exists, and otherwise will call into the NativeGetXxx function to get the
// platform-specific value.
// NS_ERROR_NOT_AVAILABLE is returned if there is neither an override pref or
// a platform-specific value.
nsresult GetColorValue(ColorID, ColorScheme, UseStandins, nscolor& aResult);
nsresult GetIntValue(IntID aID, int32_t& aResult);
nsresult GetFloatValue(FloatID aID, float& aResult);
// Same, but returns false if there is no platform-specific value.
// (There are no override prefs for font values.)
bool GetFontValue(FontID aID, nsString& aName, gfxFontStyle& aStyle);
virtual nsresult NativeGetInt(IntID aID, int32_t& aResult) = 0;
virtual nsresult NativeGetFloat(FloatID aID, float& aResult) = 0;
virtual nsresult NativeGetColor(ColorID, ColorScheme, nscolor& aResult) = 0;
virtual bool NativeGetFont(FontID aID, nsString& aName,
gfxFontStyle& aStyle) = 0;
virtual void RefreshImpl();
virtual char16_t GetPasswordCharacterImpl() { return char16_t('*'); }
virtual bool GetEchoPasswordImpl() { return false; }
virtual uint32_t GetPasswordMaskDelayImpl() { return 600; }
virtual bool GetDefaultDrawInTitlebar() { return true; }
virtual TitlebarAction GetTitlebarAction(TitlebarEvent aEvent) {
return TitlebarAction::None;
static bool LookAndFeelFontToStyle(const LookAndFeelFont&, nsString& aName,
static LookAndFeelFont StyleToLookAndFeelFont(const nsAString& aName,
const gfxFontStyle&);
virtual void SetDataImpl(FullLookAndFeel&& aTables) {}
virtual void NativeInit() = 0;
virtual void GetThemeInfo(nsACString&) {}
nsXPLookAndFeel() = default;
static nscolor GetStandinForNativeColor(ColorID, ColorScheme);
// A platform-agnostic dark-color scheme, for platforms where we don't have
// "native" dark colors, like Windows and Android.
static mozilla::Maybe<nscolor> GenericDarkColor(ColorID);
mozilla::Maybe<nscolor> GetUncachedColor(ColorID, ColorScheme, UseStandins);
void RecordTelemetry();
virtual void RecordLookAndFeelSpecificTelemetry() {}
static void OnPrefChanged(const char* aPref, void* aClosure);
static bool sInitialized;
static nsXPLookAndFeel* sInstance;
static bool sShutdown;