import type { ExtensionPriority } from '@remirror/core-constants';
import type { AnyFunction, CommandFunction, KeyBindingCommandFunction, Listable, LiteralUnion, NonChainableCommandFunction, ProsemirrorAttributes, Shape } from '@remirror/core-types';
import type { I18n } from '@remirror/i18n';
import type { CoreIcon } from '@remirror/icons';
import type { AnyExtension, HelperAnnotation } from '../extension';
import type { GetOptions, TypedPropertyDescriptor } from '../types';
/**
 * A decorator which can be applied to top level methods on an extension to
 * identify them as helpers. This can be used as a replacement for the
 * `createHelpers` method.
 *
 * To allow the TypeScript compiler to automatically infer types, please create
 * your methods with the following type signature.
 *
 * ```ts
 * import { CommandFunction } from '@remirror/core';
 *
 * type Signature = (...args: any[]) => CommandFunction;
 * ```
 *
 * The following is an example of how this can be used within your extension.
 *
 * ```ts
 * import { helper, Helper } from '@remirror/core';
 *
 * class MyExtension {
 *   get name() {
 *     return 'my';
 *   }
 *
 *   @helper()
 *   alwaysTrue(): Helper<boolean> {
 *     return true;
 *   }
 * }
 * ```
 *
 * The above helper can now be used within your editor instance.
 *
 * ```tsx
 * import { useRemirrorContext } from '@remirror/react';
 *
 * const MyEditorButton = () => {
 *   const { helpers } = useRemirrorContext();
 *
 *   return helpers.alwaysTrue() ? <button>My Button</button> : null
 * }
 * ```
 *
 * @category Method Decorator
 */
export declare function helper(options?: HelperDecoratorOptions): <Extension extends AnyExtension, Type>(target: Extension, propertyKey: string, _descriptor: TypedPropertyDescriptor<AnyFunction<NonNullable<Type> extends HelperAnnotation ? Type : never>>) => void;
/**
 * A decorator which can be applied to top level methods on an extension to
 * identify them as commands. This can be used as a replacement for the
 * `createCommands` method.
 *
 * If you prefer not to use decorators, then you can continue using
 * `createCommands`. Internally the decorators are being used as they are better
 * for documentation purposes.
 *
 * For automated type inference methods that use this decorator must implement
 * the following type signature.
 *
 * ```ts
 * import { CommandFunction } from '@remirror/core';
 *
 * type Signature = (...args: any[]) => CommandFunction;
 * ```
 *
 * The following is an example of how this can be used within your extension.
 *
 * ```ts
 * import { command, CommandFunction } from '@remirror/core';
 *
 * class MyExtension {
 *   get name() {
 *     return 'my';
 *   }
 *
 *   @command()
 *   myCommand(text: string): CommandFunction {
 *     return ({ tr, dispatch }) => {
 *       dispatch?.(tr.insertText('my command ' + text));
 *       return true;
 *     }
 *   }
 * }
 * ```
 *
 * The above command can now be used within your editor instance.
 *
 * ```tsx
 * import { useRemirrorContext } from '@remirror/react';
 *
 * const MyEditorButton = () => {
 *   const { commands } = useRemirrorContext();
 *
 *   return <button onClick={() => commands.myCommand('hello')}>My Button</button>
 * }
 * ```
 *
 * @category Method Decorator
 */
export declare function command<Extension extends AnyExtension>(options?: ChainableCommandDecoratorOptions<Required<GetOptions<Extension>>>): ExtensionDecorator<Extension, CommandFunction, void>;
export declare function command<Extension extends AnyExtension>(options: NonChainableCommandDecoratorOptions<Required<GetOptions<Extension>>>): ExtensionDecorator<Extension, NonChainableCommandFunction, void>;
/**
 * A decorator which can be applied to an extension method to
 * identify as a key binding method. This can be used as a replacement for
 * the `createKeymap` method depending on your preference.
 *
 * If you prefer not to use decorators, then you can continue using
 * `createKeymap`.
 *
 * @category Method Decorator
 */
export declare function keyBinding<Extension extends AnyExtension>(options: KeybindingDecoratorOptions<Required<GetOptions<Extension>>>): (target: Extension, propertyKey: string, _descriptor: TypedPropertyDescriptor<KeyBindingCommandFunction>) => void;
export interface HelperDecoratorOptions {
}
export type KeyboardShortcutFunction<Options extends Shape = Shape> = (options: Options, store: Remirror.ExtensionStore) => KeyboardShortcut;
export type KeyboardShortcutValue = Listable<LiteralUnion<'Enter' | 'ArrowDown' | 'ArrowUp' | 'ArrowLeft' | 'ArrowRight' | 'Escape' | 'Delete' | 'Backspace', string>>;
export type KeyboardShortcut = KeyboardShortcutValue | KeyboardShortcutFunction;
export interface KeybindingDecoratorOptions<Options extends Shape = Shape> {
    /**
     * The keypress sequence to intercept.
     *
     * - `Enter`
     * - `Shift-Enter`
     */
    shortcut: KeyboardShortcut;
    /**
     * This can be used to set a keybinding as inactive based on the provided
     * options.
     */
    isActive?: (options: Options, store: Remirror.ExtensionStore) => boolean;
    /**
     * The priority for this keybinding.
     */
    priority?: ExtensionPriority | ((options: Options, store: Remirror.ExtensionStore) => ExtensionPriority);
    /**
     * The name of the command that the keybinding should be attached to.
     */
    command?: Remirror.AllUiCommandNames;
}
type ExtensionDecorator<Extension extends AnyExtension, Fn, Return> = (target: Extension, propertyKey: string, _descriptor: TypedPropertyDescriptor<AnyFunction<Fn>>) => Return;
export interface CommandUiIcon {
    /**
     * The icon name.
     */
    name: CoreIcon;
    /**
     * Text placed in a superscript position. For `ltr` this is in the top right
     * hand corner of the icon.
     */
    sup?: string;
    /**
     * Text placed in a subscript position. For `ltr` this is in the bottom right
     * hand corner.
     */
    sub?: string;
}
export type CommandDecoratorShortcut = string | {
    shortcut: string;
    attrs: ProsemirrorAttributes;
} | string[] | Array<{
    shortcut: string;
    attrs: ProsemirrorAttributes;
}>;
export interface CommandUiDecoratorOptions {
    /**
     * The default command icon to use if this has a UI representation.
     */
    icon?: CommandDecoratorValue<CoreIcon | CommandUiIcon>;
    /**
     * A label for the command with support for i18n. This makes use of
     * `babel-plugin-macros` to generate the message.
     */
    label?: CommandDecoratorMessage;
    /**
     * An i18n compatible description which can be used to provide extra context
     * for the command.
     */
    description?: CommandDecoratorMessage;
    /**
     * A keyboard shortcut which can be used to run the specified command.
     *
     * Rather than defining this here, you should create a decorated `keyBinding`
     * and set the `command` name option. This way the shortcut will dynamically
     * be added at runtime.
     */
    shortcut?: CommandDecoratorShortcut;
}
export interface CommandDecoratorMessageProps {
    /**
     * True when the command is enabled.
     */
    enabled: boolean;
    /**
     * True when the extension is active.
     */
    active: boolean;
    /**
     * Predefined attributes which can influence the returned value.
     */
    attrs: ProsemirrorAttributes | undefined;
    /**
     * A translation utility for translating a predefined string / or message
     * descriptor.
     */
    t: I18n['_'];
}
/**
 * @typeParam Value - the value which should be returned from the function or
 * used directly.
 */
export type CommandDecoratorValue<Value> = ((props: CommandDecoratorMessageProps) => Value) | Value;
export type CommandDecoratorMessage = CommandDecoratorValue<string>;
interface ChainableCommandDecoratorOptions<Options extends Shape> extends Remirror.CommandDecoratorOptions<Options> {
    /**
     * Set this to `true` to disable chaining of this command. This means it will
     * no longer be available when running `
     *
     * @defaultValue false
     */
    disableChaining?: false;
}
interface NonChainableCommandDecoratorOptions<Options extends Shape> extends Remirror.CommandDecoratorOptions<Options> {
    /**
     * Set this to `true` to disable chaining of this command. This means it will
     * no longer be available when running `
     *
     * @defaultValue false
     */
    disableChaining: true;
}
export type CommandDecoratorOptions<Options extends Shape = Shape> = ChainableCommandDecoratorOptions<Options> | NonChainableCommandDecoratorOptions<Options>;
declare global {
    namespace Remirror {
        /**
         * UX options for the command which can be extended.
         */
        interface CommandDecoratorOptions<Options extends Shape = Shape> extends CommandUiDecoratorOptions {
            /**
             * A function which can be used to override whether a command is already
             * active for the current selection.
             */
            active?: (options: Options, store: ExtensionStore) => boolean;
        }
    }
}
export {};