import { IDataConnector } from '@jupyterlab/statedb';
import { PartialJSONObject, PartialJSONValue, ReadonlyPartialJSONObject, ReadonlyPartialJSONValue, Token } from '@lumino/coreutils';
import { IDisposable } from '@lumino/disposable';
import { ISignal } from '@lumino/signaling';
import { ISchemaValidator } from './settingregistry';
/**
 * The setting registry token.
 */
export declare const ISettingRegistry: Token<ISettingRegistry>;
/**
 * The settings registry interface.
 */
export interface ISettingRegistry {
    /**
     * The data connector used by the setting registry.
     */
    readonly connector: IDataConnector<ISettingRegistry.IPlugin, string, string>;
    /**
     * The schema of the setting registry.
     */
    readonly schema: ISettingRegistry.ISchema;
    /**
     * The schema validator used by the setting registry.
     */
    readonly validator: ISchemaValidator;
    /**
     * A signal that emits the name of a plugin when its settings change.
     */
    readonly pluginChanged: ISignal<this, string>;
    /**
     * The collection of setting registry plugins.
     */
    readonly plugins: {
        [name: string]: ISettingRegistry.IPlugin | undefined;
    };
    /**
     * Get an individual setting.
     *
     * @param plugin - The name of the plugin whose settings are being retrieved.
     *
     * @param key - The name of the setting being retrieved.
     *
     * @returns A promise that resolves when the setting is retrieved.
     */
    get(plugin: string, key: string): Promise<{
        composite: PartialJSONValue | undefined;
        user: PartialJSONValue | undefined;
    }>;
    /**
     * Load a plugin's settings into the setting registry.
     *
     * @param plugin - The name of the plugin whose settings are being loaded.
     *
     * @returns A promise that resolves with a plugin settings object or rejects
     * if the plugin is not found.
     */
    load(plugin: string): Promise<ISettingRegistry.ISettings>;
    /**
     * Reload a plugin's settings into the registry even if they already exist.
     *
     * @param plugin - The name of the plugin whose settings are being reloaded.
     *
     * @returns A promise that resolves with a plugin settings object or rejects
     * with a list of `ISchemaValidator.IError` objects if it fails.
     */
    reload(plugin: string): Promise<ISettingRegistry.ISettings>;
    /**
     * Remove a single setting in the registry.
     *
     * @param plugin - The name of the plugin whose setting is being removed.
     *
     * @param key - The name of the setting being removed.
     *
     * @returns A promise that resolves when the setting is removed.
     */
    remove(plugin: string, key: string): Promise<void>;
    /**
     * Set a single setting in the registry.
     *
     * @param plugin - The name of the plugin whose setting is being set.
     *
     * @param key - The name of the setting being set.
     *
     * @param value - The value of the setting being set.
     *
     * @returns A promise that resolves when the setting has been saved.
     *
     */
    set(plugin: string, key: string, value: PartialJSONValue): Promise<void>;
    /**
     * Register a plugin transform function to act on a specific plugin.
     *
     * @param plugin - The name of the plugin whose settings are transformed.
     *
     * @param transforms - The transform functions applied to the plugin.
     *
     * @returns A disposable that removes the transforms from the registry.
     *
     * #### Notes
     * - `compose` transformations: The registry automatically overwrites a
     * plugin's default values with user overrides, but a plugin may instead wish
     * to merge values. This behavior can be accomplished in a `compose`
     * transformation.
     * - `fetch` transformations: The registry uses the plugin data that is
     * fetched from its connector. If a plugin wants to override, e.g. to update
     * its schema with dynamic defaults, a `fetch` transformation can be applied.
     */
    transform(plugin: string, transforms: {
        [phase in ISettingRegistry.IPlugin.Phase]?: ISettingRegistry.IPlugin.Transform;
    }): IDisposable;
    /**
     * Upload a plugin's settings.
     *
     * @param plugin - The name of the plugin whose settings are being set.
     *
     * @param raw - The raw plugin settings being uploaded.
     *
     * @returns A promise that resolves when the settings have been saved.
     */
    upload(plugin: string, raw: string): Promise<void>;
}
/**
 * A namespace for setting registry interfaces.
 */
export declare namespace ISettingRegistry {
    /**
     * The primitive types available in a JSON schema.
     */
    type Primitive = 'array' | 'boolean' | 'null' | 'number' | 'object' | 'string';
    /**
     * The menu ids defined by default.
     */
    type DefaultMenuId = 'jp-menu-file' | 'jp-menu-file-new' | 'jp-menu-edit' | 'jp-menu-help' | 'jp-menu-kernel' | 'jp-menu-run' | 'jp-menu-settings' | 'jp-menu-view' | 'jp-menu-tabs';
    /**
     * An interface defining a menu.
     */
    interface IMenu extends PartialJSONObject {
        /**
         * Unique menu identifier
         */
        id: DefaultMenuId | string;
        /**
         * Menu items
         */
        items?: IMenuItem[];
        /**
         * The rank order of the menu among its siblings.
         */
        rank?: number;
        /**
         * Menu title
         *
         * #### Notes
         * Default will be the capitalized id.
         */
        label?: string;
        /**
         * Menu icon id
         *
         * #### Note
         * The icon id will looked for in registered LabIcon.
         */
        icon?: string;
        /**
         * Get the mnemonic index for the title.
         *
         * #### Notes
         * The default value is `-1`.
         */
        mnemonic?: number;
        /**
         * Whether a menu is disabled. `False` by default.
         *
         * #### Notes
         * This allows an user to suppress a menu.
         */
        disabled?: boolean;
    }
    /**
     * An interface describing a menu item.
     */
    interface IMenuItem extends PartialJSONObject {
        /**
         * The type of the menu item.
         *
         * The default value is `'command'`.
         */
        type?: 'command' | 'submenu' | 'separator';
        /**
         * The command to execute when the item is triggered.
         *
         * The default value is an empty string.
         */
        command?: string;
        /**
         * The arguments for the command.
         *
         * The default value is an empty object.
         */
        args?: PartialJSONObject;
        /**
         * The rank order of the menu item among its siblings.
         */
        rank?: number;
        /**
         * The submenu for a `'submenu'` type item.
         *
         * The default value is `null`.
         */
        submenu?: IMenu | null;
        /**
         * Whether a menu item is disabled. `false` by default.
         *
         * #### Notes
         * This allows an user to suppress menu items.
         */
        disabled?: boolean;
    }
    interface IContextMenuItem extends IMenuItem {
        /**
         * The CSS selector for the context menu item.
         *
         * The context menu item will only be displayed in the context menu
         * when the selector matches a node on the propagation path of the
         * contextmenu event. This allows the menu item to be restricted to
         * user-defined contexts.
         *
         * The selector must not contain commas.
         */
        selector: string;
    }
    /**
     * The settings for a specific plugin.
     */
    interface IPlugin extends PartialJSONObject {
        /**
         * The name of the plugin.
         */
        id: string;
        /**
         * The collection of values for a specified plugin.
         */
        data: ISettingBundle;
        /**
         * The raw user settings data as a string containing JSON with comments.
         */
        raw: string;
        /**
         * The JSON schema for the plugin.
         */
        schema: ISchema;
        /**
         * The published version of the NPM package containing the plugin.
         */
        version: string;
    }
    /**
     * A namespace for plugin functionality.
     */
    namespace IPlugin {
        /**
         * A function that transforms a plugin object before it is consumed by the
         * setting registry.
         */
        type Transform = (plugin: IPlugin) => IPlugin;
        /**
         * The phases during which a transformation may be applied to a plugin.
         */
        type Phase = 'compose' | 'fetch';
    }
    /**
     * A minimal subset of the formal JSON Schema that describes a property.
     */
    interface IProperty extends PartialJSONObject {
        /**
         * The default value, if any.
         */
        default?: PartialJSONValue;
        /**
         * The schema description.
         */
        description?: string;
        /**
         * The schema's child properties.
         */
        properties?: {
            [property: string]: IProperty;
        };
        /**
         * The title of a property.
         */
        title?: string;
        /**
         * The type or types of the data.
         */
        type?: Primitive | Primitive[];
    }
    /**
     * A schema type that is a minimal subset of the formal JSON Schema along with
     * optional JupyterLab rendering hints.
     */
    interface ISchema extends IProperty {
        /**
         * The JupyterLab menus that are created by a plugin's schema.
         */
        'jupyter.lab.menus'?: {
            main: IMenu[];
            context: IContextMenuItem[];
        };
        /**
         * Whether the schema is deprecated.
         *
         * #### Notes
         * This flag can be used by functionality that loads this plugin's settings
         * from the registry. For example, the setting editor does not display a
         * plugin's settings if it is set to `true`.
         */
        'jupyter.lab.setting-deprecated'?: boolean;
        /**
         * The JupyterLab icon hint.
         */
        'jupyter.lab.setting-icon'?: string;
        /**
         * The JupyterLab icon class hint.
         */
        'jupyter.lab.setting-icon-class'?: string;
        /**
         * The JupyterLab icon label hint.
         */
        'jupyter.lab.setting-icon-label'?: string;
        /**
         * The JupyterLab toolbars created by a plugin's schema.
         *
         * #### Notes
         * The toolbar items are grouped by document or widget factory name
         * that will contain a toolbar.
         */
        'jupyter.lab.toolbars'?: {
            [factory: string]: IToolbarItem[];
        };
        /**
         * A flag that indicates plugin should be transformed before being used by
         * the setting registry.
         *
         * #### Notes
         * If this value is set to `true`, the setting registry will wait until a
         * transformation has been registered (by calling the `transform()` method
         * of the registry) for the plugin ID before resolving `load()` promises.
         * This means that if the attribute is set to `true` but no transformation
         * is registered in time, calls to `load()` a plugin will eventually time
         * out and reject.
         */
        'jupyter.lab.transform'?: boolean;
        /**
         * The JupyterLab shortcuts that are created by a plugin's schema.
         */
        'jupyter.lab.shortcuts'?: IShortcut[];
        /**
         * The root schema is always an object.
         */
        type: 'object';
    }
    /**
     * The setting values for a plugin.
     */
    interface ISettingBundle extends PartialJSONObject {
        /**
         * A composite of the user setting values and the plugin schema defaults.
         *
         * #### Notes
         * The `composite` values will always be a superset of the `user` values.
         */
        composite: PartialJSONObject;
        /**
         * The user setting values.
         */
        user: PartialJSONObject;
    }
    /**
     * An interface for manipulating the settings of a specific plugin.
     */
    interface ISettings extends IDisposable {
        /**
         * A signal that emits when the plugin's settings have changed.
         */
        readonly changed: ISignal<this, void>;
        /**
         * The composite of user settings and extension defaults.
         */
        readonly composite: ReadonlyPartialJSONObject;
        /**
         * The plugin's ID.
         */
        readonly id: string;
        readonly plugin: ISettingRegistry.IPlugin;
        /**
         * The plugin settings raw text value.
         */
        readonly raw: string;
        /**
         * The plugin's schema.
         */
        readonly schema: ISettingRegistry.ISchema;
        /**
         * The user settings.
         */
        readonly user: ReadonlyPartialJSONObject;
        /**
         * The published version of the NPM package containing these settings.
         */
        readonly version: string;
        /**
         * Return the defaults in a commented JSON format.
         */
        annotatedDefaults(): string;
        /**
         * Calculate the default value of a setting by iterating through the schema.
         *
         * @param key - The name of the setting whose default value is calculated.
         *
         * @returns A calculated default JSON value for a specific setting.
         */
        default(key: string): PartialJSONValue | undefined;
        /**
         * Get an individual setting.
         *
         * @param key - The name of the setting being retrieved.
         *
         * @returns The setting value.
         */
        get(key: string): {
            composite: ReadonlyPartialJSONValue | undefined;
            user: ReadonlyPartialJSONValue | undefined;
        };
        /**
         * Remove a single setting.
         *
         * @param key - The name of the setting being removed.
         *
         * @returns A promise that resolves when the setting is removed.
         *
         * #### Notes
         * This function is asynchronous because it writes to the setting registry.
         */
        remove(key: string): Promise<void>;
        /**
         * Save all of the plugin's user settings at once.
         */
        save(raw: string): Promise<void>;
        /**
         * Set a single setting.
         *
         * @param key - The name of the setting being set.
         *
         * @param value - The value of the setting.
         *
         * @returns A promise that resolves when the setting has been saved.
         *
         * #### Notes
         * This function is asynchronous because it writes to the setting registry.
         */
        set(key: string, value: PartialJSONValue): Promise<void>;
        /**
         * Validates raw settings with comments.
         *
         * @param raw - The JSON with comments string being validated.
         *
         * @returns A list of errors or `null` if valid.
         */
        validate(raw: string): ISchemaValidator.IError[] | null;
    }
    /**
     * An interface describing a JupyterLab keyboard shortcut.
     */
    interface IShortcut extends PartialJSONObject {
        /**
         * The optional arguments passed into the shortcut's command.
         */
        args?: PartialJSONObject;
        /**
         * The command invoked by the shortcut.
         */
        command: string;
        /**
         * Whether a keyboard shortcut is disabled. `False` by default.
         */
        disabled?: boolean;
        /**
         * The key sequence of the shortcut.
         *
         * ### Notes
         *
         * If this is a list like `['Ctrl A', 'B']`, the user needs to press
         * `Ctrl A` followed by `B` to trigger the shortcuts.
         */
        keys: string[];
        /**
         * The CSS selector applicable to the shortcut.
         */
        selector: string;
    }
    /**
     * An interface describing a toolbar item.
     */
    interface IToolbarItem extends PartialJSONObject {
        /**
         * Unique toolbar item name
         */
        name: string;
        /**
         * The command to execute when the item is triggered.
         *
         * The default value is an empty string.
         */
        command?: string;
        /**
         * The arguments for the command.
         *
         * The default value is an empty object.
         */
        args?: PartialJSONObject;
        /**
         * Whether the toolbar item is ignored (i.e. not created). `false` by default.
         *
         * #### Notes
         * This allows an user to suppress toolbar items.
         */
        disabled?: boolean;
        /**
         * Item icon id
         *
         * #### Note
         * The id will be looked for in the LabIcon registry.
         * The command icon will be overridden by this label if defined.
         */
        icon?: string;
        /**
         * Item label
         *
         * #### Note
         * The command label will be overridden by this label if defined.
         */
        label?: string;
        /**
         * The rank order of the toolbar item among its siblings.
         */
        rank?: number;
        /**
         * The type of the toolbar item.
         */
        type?: 'command' | 'spacer';
    }
}