import { Event } from "../../../base/common/event.js";
import { IJSONSchema } from "../../../base/common/jsonSchema.js";
import { IColorTheme } from "./themeService.js";
export type SizeIdentifier = string;
/**
 * Size value unit types supported by the registry
 */
export type SizeUnit = "px" | "rem" | "em" | "%";
/**
 * A size value with a numeric amount and unit
 */
export interface SizeValue {
    readonly value: number;
    readonly unit: SizeUnit;
}
export interface SizeContribution {
    readonly id: SizeIdentifier;
    readonly description: string;
    readonly defaults: SizeDefaults | SizeValue | null;
    readonly deprecationMessage: string | undefined;
}
/**
 * Returns the css variable name for the given size identifier. Dots (`.`) are replaced with hyphens (`-`) and
 * everything is prefixed with `--vscode-`.
 *
 * @sample `editor.fontSize` is `--vscode-editor-fontSize`.
 */
export declare function asCssVariableName(sizeIdent: SizeIdentifier): string;
export declare function asCssVariable(size: SizeIdentifier): string;
export declare function asCssVariableWithDefault(size: SizeIdentifier, defaultCssValue: string): string;
export interface SizeDefaults {
    light: SizeValue | null;
    dark: SizeValue | null;
    hcDark: SizeValue | null;
    hcLight: SizeValue | null;
}
export declare function isSizeDefaults(value: unknown): value is SizeDefaults;
/**
 * Helper function to create a size value
 */
export declare function size(value: number, unit?: SizeUnit): SizeValue;
/**
 * Helper function to create size defaults that use the same value for all themes
 */
export declare function sizeForAllThemes(value: number, unit?: SizeUnit): SizeDefaults;
/**
 * Convert a size value to a CSS string
 */
export declare function sizeValueToCss(sizeValue: SizeValue): string;
export declare const Extensions: {
    SizeContribution: string;
};
export declare const DEFAULT_SIZE_CONFIG_VALUE = "default";
export interface ISizeRegistry {
    readonly onDidChangeSchema: Event<void>;
    /**
     * Register a size to the registry.
     * @param id The size id as used in theme description files
     * @param defaults The default values
     * @param description the description
     */
    registerSize(id: string, defaults: SizeDefaults | SizeValue | null, description: string): SizeIdentifier;
    /**
     * Deregister a size from the registry.
     */
    deregisterSize(id: string): void;
    /**
     * Get all size contributions
     */
    getSizes(): SizeContribution[];
    /**
     * Gets the default size of the given id
     */
    resolveDefaultSize(id: SizeIdentifier, theme: IColorTheme): SizeValue | undefined;
    /**
     * JSON schema for an object to assign size values to one of the size contributions.
     */
    getSizeSchema(): IJSONSchema;
    /**
     * JSON schema for a reference to a size contribution.
     */
    getSizeReferenceSchema(): IJSONSchema;
    /**
     * Notify when the color theme or settings change.
     */
    notifyThemeUpdate(theme: IColorTheme): void;
}
export declare function registerSize(id: string, defaults: SizeDefaults | SizeValue | null, description: string, deprecationMessage?: string): SizeIdentifier;
export declare function getSizeRegistry(): ISizeRegistry;
export declare const workbenchSizesSchemaId = "vscode://schemas/workbench-sizes";