/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import * as fs from 'node:fs';
import type { Theme, ThemeType, ColorsTheme } from './theme.js';
import type { CustomTheme } from '@google/gemini-cli-core';
import type { SemanticColors } from './semantic-tokens.js';
export interface ThemeDisplay {
    name: string;
    type: ThemeType;
    isCustom?: boolean;
}
export declare const DEFAULT_THEME: Theme;
declare class ThemeManager {
    private readonly availableThemes;
    private activeTheme;
    private settingsThemes;
    private extensionThemes;
    private fileThemes;
    private terminalBackground;
    private cachedColors;
    private cachedSemanticColors;
    private lastCacheKey;
    private fs;
    private homedir;
    constructor(dependencies?: {
        fs?: typeof fs;
        homedir?: () => string;
    });
    setTerminalBackground(color: string | undefined): void;
    getTerminalBackground(): string | undefined;
    private clearCache;
    isDefaultTheme(themeName: string | undefined): boolean;
    /**
     * Loads custom themes from settings.
     * @param customThemesSettings Custom themes from settings.
     */
    loadCustomThemes(customThemesSettings?: Record<string, CustomTheme>): void;
    /**
     * Loads custom themes from extensions.
     * @param extensionName The name of the extension providing the themes.
     * @param customThemes Custom themes from extensions.
     */
    registerExtensionThemes(extensionName: string, customThemes?: CustomTheme[]): void;
    /**
     * Unregisters custom themes from extensions.
     * @param extensionName The name of the extension.
     * @param customThemes Custom themes to unregister.
     */
    unregisterExtensionThemes(extensionName: string, customThemes?: CustomTheme[]): void;
    /**
     * Checks if themes for a given extension are already registered.
     * @param extensionName The name of the extension.
     * @returns True if any themes from the extension are registered.
     */
    hasExtensionThemes(extensionName: string): boolean;
    /**
     * Clears all registered extension themes.
     * This is primarily for testing purposes to reset state between tests.
     */
    clearExtensionThemes(): void;
    /**
     * Clears all themes loaded from files.
     * This is primarily for testing purposes to reset state between tests.
     */
    clearFileThemes(): void;
    /**
     * Re-initializes the ThemeManager with new dependencies.
     * This is primarily for testing to allow injecting mocks.
     */
    reinitialize(dependencies: {
        fs?: typeof fs;
        homedir?: () => string;
    }): void;
    /**
     * Resets the ThemeManager state to defaults.
     * This is for testing purposes to ensure test isolation.
     */
    resetForTesting(dependencies?: {
        fs?: typeof fs;
        homedir?: () => string;
    }): void;
    setActiveTheme(themeName: string | undefined): boolean;
    /**
     * Gets the currently active theme.
     * @returns The active theme.
     */
    getActiveTheme(): Theme;
    /**
     * Gets the colors for the active theme, respecting the terminal background.
     * @returns The theme colors.
     */
    getColors(): ColorsTheme;
    /**
     * Gets the semantic colors for the active theme.
     * @returns The semantic colors.
     */
    getSemanticColors(): SemanticColors;
    isThemeCompatible(activeTheme: Theme, terminalBackground: string | undefined): boolean;
    private _getAllCustomThemes;
    /**
     * Gets a list of custom theme names.
     * @returns Array of custom theme names.
     */
    getCustomThemeNames(): string[];
    /**
     * Checks if a theme name is a custom theme.
     * @param themeName The theme name to check.
     * @returns True if the theme is custom.
     */
    isCustomTheme(themeName: string): boolean;
    /**
     * Returns a list of available theme names.
     */
    getAvailableThemes(): ThemeDisplay[];
    /**
     * Gets a theme by name.
     * @param themeName The name of the theme to get.
     * @returns The theme if found, undefined otherwise.
     */
    getTheme(themeName: string): Theme | undefined;
    /**
     * Gets all available themes.
     * @returns A list of all available themes.
     */
    getAllThemes(): Theme[];
    private isPath;
    private loadThemeFromFile;
    findThemeByName(themeName: string | undefined): Theme | undefined;
}
export declare const themeManager: ThemeManager;
export {};