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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_widget_HeadlessLookAndFeel_h
#define mozilla_widget_HeadlessLookAndFeel_h
#include "nsXPLookAndFeel.h"
#include "nsLookAndFeel.h"
namespace mozilla {
namespace widget {
#if defined(MOZ_WIDGET_GTK)
// Our nsLookAndFeel for Gtk relies on APIs that aren't available in headless
// mode, so for processes that are unable to connect to a display server, we use
// an implementation with hardcoded values.
//
// HeadlessLookAndFeel is used:
//
// * in the parent process, when full headless mode (MOZ_HEADLESS=1) is
// enabled
// * in content processes, when full headless mode or headless content
// mode (security.sandbox.content.headless) is enabled, unless
// widget.remote-look-and-feel is also enabled, in which case
// RemoteLookAndFeel is used instead.
//
// The result of this is that when headless content mode is enabled, content
// processes use values derived from the parent's nsLookAndFeel (i.e., values
// derived from Gtk APIs) while still refraining from making any display server
// connections.
class HeadlessLookAndFeel : public nsXPLookAndFeel {
public:
explicit HeadlessLookAndFeel(const LookAndFeelCache* aCache);
virtual ~HeadlessLookAndFeel();
void NativeInit() final{};
virtual nsresult NativeGetInt(IntID aID, int32_t& aResult) override;
virtual nsresult NativeGetFloat(FloatID aID, float& aResult) override;
virtual nsresult NativeGetColor(ColorID aID, nscolor& aResult) override;
virtual bool NativeGetFont(FontID aID, nsString& aFontName,
gfxFontStyle& aFontStyle) override;
virtual void RefreshImpl() override;
virtual char16_t GetPasswordCharacterImpl() override;
virtual bool GetEchoPasswordImpl() override;
};
#else
// When possible, we simply reuse the platform's existing nsLookAndFeel
// implementation in headless mode.
typedef nsLookAndFeel HeadlessLookAndFeel;
#endif
} // namespace widget
} // namespace mozilla
#endif
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