97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
// Copyright 2024 The Chromium Embedded Framework Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be found
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// in the LICENSE file.
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#ifndef CEF_LIBCEF_BROWSER_VIEWS_WIDGET_IMPL_H_
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#define CEF_LIBCEF_BROWSER_VIEWS_WIDGET_IMPL_H_
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#pragma once
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#include <map>
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#include "libcef/browser/views/color_provider_tracker.h"
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#include "libcef/browser/views/widget.h"
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#include "chrome/browser/themes/theme_service_observer.h"
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#include "ui/views/widget/widget.h"
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class CefWindowView;
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class Profile;
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// Widget specialization to implement theme support for the Alloy runtime. The
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// global NativeTheme (native/OS theme) will be used unless this Widget contains
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// a BrowserView, in which case a Chrome theme associated with the BrowserView's
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// Profile will be used.
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//
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// Theme support works as follows:
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// - OnNativeThemeUpdated is called when the NativeTheme associated with this
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// Widget changes. For example, when switching the OS appearance between light
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// and dark mode.
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// - OnColorProviderCacheResetMissed is called if some other NativeTheme not
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// associated with this Widget changes and we need to reapply global color
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// overrides (see CefColorProviderTracker for details).
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// - OnThemeChanged is called when the client changes the Chrome theme
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// explicitly by calling CefRequestContext::SetChromeColorScheme.
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// - GetThemeProvider, GetCustomTheme and GetColorProviderKey return objects
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// that are used internally to apply the current theme.
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//
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// Callers should use view_util methods (e.g. GetColor, ShouldUseDarkTheme, etc)
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// instead of calling theme-related Widget methods directly.
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class CefWidgetImpl : public views::Widget,
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public CefWidget,
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public CefColorProviderTracker::Observer,
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public ThemeServiceObserver {
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public:
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explicit CefWidgetImpl(CefWindowView* window_view);
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~CefWidgetImpl() override;
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CefWidgetImpl(const CefWidgetImpl&) = delete;
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CefWidgetImpl& operator=(const CefWidgetImpl&) = delete;
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// CefWidget methods:
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views::Widget* GetWidget() override { return this; }
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const views::Widget* GetWidget() const override { return this; }
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void Initialized() override;
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bool IsInitialized() const override { return initialized_; }
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void AddAssociatedProfile(Profile* profile) override;
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void RemoveAssociatedProfile(Profile* profile) override;
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Profile* GetThemeProfile() const override;
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// views::Widget methods:
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const ui::ThemeProvider* GetThemeProvider() const override;
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ui::ColorProviderKey::ThemeInitializerSupplier* GetCustomTheme()
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const override;
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// NativeWidgetDelegate methods:
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void OnNativeWidgetDestroyed() override;
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// ui::NativeThemeObserver methods:
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void OnNativeThemeUpdated(ui::NativeTheme* observed_theme) override;
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ui::ColorProviderKey GetColorProviderKey() const override;
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// ThemeServiceObserver methods:
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void OnThemeChanged() override;
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private:
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void NotifyThemeColorsChanged(bool chrome_theme, bool call_theme_changed);
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// Select a native theme that is appropriate for the current context. This is
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// currently only needed for Linux to switch between the regular NativeTheme
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// and the GTK NativeTheme instance.
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void SelectNativeTheme();
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// CefColorProviderTracker::Observer methods:
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void OnColorProviderCacheResetMissed() override;
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CefWindowView* window_view_;
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bool initialized_ = false;
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// Map of Profile* to count.
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using ProfileMap = std::map<Profile*, size_t>;
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ProfileMap associated_profiles_;
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CefColorProviderTracker color_provider_tracker_{this};
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};
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#endif // CEF_LIBCEF_BROWSER_VIEWS_WIDGET_IMPL_H_
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