/*
 * Copyright (c) 2021-2024 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @file
 * @kit IMEKit
 */

/// <reference path="../component/common_ts_ets_api.d.ts"/>

import type { AsyncCallback, Callback } from './@ohos.base';
import type { KeyEvent as InputKeyEvent } from './@ohos.multimodalInput.keyEvent';
import InputMethodSubtype from './@ohos.InputMethodSubtype';
import type { LocalStorage } from 'StateManagement';
import BaseContext from './application/BaseContext';
import window from './@ohos.window';

/**
 * Input method engine
 *
 * @namespace inputMethodEngine
 * @syscap SystemCapability.MiscServices.InputMethodFramework
 * @since 8
 */
declare namespace inputMethodEngine {
  /**
   * When "enter" key is pressed, there is no action
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_UNSPECIFIED: number;

  /**
   * When "enter" key is pressed, it means GO
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_GO: number;

  /**
   * When "enter" key is pressed, it means SEARCH
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_SEARCH: number;

  /**
   * When "enter" key is pressed, it means SEND
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_SEND: number;

  /**
   * When "enter" key is pressed, it means NEXT
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_NEXT: number;

  /**
   * When "enter" key is pressed, it means DONE
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_DONE: number;

  /**
   * When "enter" key is pressed, it means PREVIOUS
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const ENTER_KEY_TYPE_PREVIOUS: number;

  /**
   * Editor with no special function
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_NULL: number;

  /**
   * Editor of type TEXT
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_TEXT: number;

  /**
   * Editor of type NUMBER
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_NUMBER: number;

  /**
   * Editor of type PHONE NUMBER
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_PHONE: number;

  /**
   * Editor of type DATETIME
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_DATETIME: number;

  /**
   * Editor of type EMAIL
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_EMAIL: number;

  /**
   * Editor of type URI
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_URI: number;

  /**
   * Editor of type PASSWORD
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const PATTERN_PASSWORD: number;

  /**
   * Editor of type SCREEN LOCK PASSWORD
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 11
   */
  const PATTERN_PASSWORD_SCREEN_LOCK: number;

  /**
   * Editor of type NUMBER PASSWORD
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 11
   */
  const PATTERN_PASSWORD_NUMBER: number;

  /**
   * Editor in SELECTING state
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const FLAG_SELECTING: number;

  /**
   * Editor in SINGLE_LINE state
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const FLAG_SINGLE_LINE: number;

  /**
   * The Editor displays in PART mode
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const DISPLAY_MODE_PART: number;

  /**
   * The Editor displays in FULL mode
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const DISPLAY_MODE_FULL: number;

  /**
   * Allows ASCII to be inputted
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_ASCII: number;

  /**
   * Do not specify Editor's input type
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_NONE: number;

  /**
   * Allows CHARACTERS to be inputted
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_AUTO_CAP_CHARACTERS: number;

  /**
   * Allows SENTENCES to be inputted
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_AUTO_CAP_SENTENCES: number;

  /**
   * Allows WORDS to be inputted
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_AUTO_WORDS: number;

  /**
   * Allows MULTI_LINE to be inputted
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_MULTI_LINE: number;

  /**
   * Half-screen mode
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  const OPTION_NO_FULLSCREEN: number;

  /**
   * The move direction of cursor: UP
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  const CURSOR_UP: number;

  /**
   * The move direction of cursor: DOWN
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  const CURSOR_DOWN: number;

  /**
   * The move direction of cursor: LEFT
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  const CURSOR_LEFT: number;

  /**
   * The move direction of cursor: RIGHT
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  const CURSOR_RIGHT: number;

  /**
   * The window styles for input method ability.
   *
   * @constant
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  const WINDOW_TYPE_INPUT_METHOD_FLOAT: number;

  /**
   * Get InputMethodAbility object to subscribe events about IME.
   *
   * @returns { InputMethodAbility } the object of the InputMethodAbility.
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  function getInputMethodAbility(): InputMethodAbility;

  /**
   * @returns { InputMethodEngine }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   * @deprecated since 9
   * @useinstead inputMethodEngine#getInputMethodAbility
   */
  function getInputMethodEngine(): InputMethodEngine;

  /**
   * Get KeyboardDelegate object to subscribe key event or events about editor.
   *
   * @returns { KeyboardDelegate } the object of KeyboardDelegate.
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  function getKeyboardDelegate(): KeyboardDelegate;

  /**
   * @returns { KeyboardDelegate }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   * @deprecated since 9
   * @useinstead inputMethodEngine#getKeyboardDelegate
   */
  function createKeyboardDelegate(): KeyboardDelegate;

  /**
   * Indicates the possible data types of the command.
   * @typedef { number | string | boolean }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 12
   */
  type CommandDataType = number | string | boolean;

  /**
   * @interface KeyboardController
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  interface KeyboardController {
    /**
     * Hide soft keyboard
     *
     * @param { AsyncCallback<void> } callback - indicates the callback function of hide.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    hide(callback: AsyncCallback<void>): void;

    /**
     * Hide soft keyboard
     *
     * @returns { Promise<void> } the promise returned by the function
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    hide(): Promise<void>;

    /**
     * @param { AsyncCallback<void> } callback - indicates the callback function of hideKeyboard.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.KeyboardController#hide
     */
    hideKeyboard(callback: AsyncCallback<void>): void;

    /**
     * @returns { Promise<void> } the promise returned by the function
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.KeyboardController#hide
     */
    hideKeyboard(): Promise<void>;

    /**
     * Exit the current input type. This function can only be called by default input method configured by system.
     *
     * @param { AsyncCallback<void> } callback - the callback of exitCurrentInputType.
     * @throws { BusinessError } 12800008 - input method manager service error.
     * @throws { BusinessError } 12800010 - not default input method configured by system.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    exitCurrentInputType(callback: AsyncCallback<void>): void;

    /**
     * Exit the current input type. This function can only be called by default input method configured by system.
     *
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 12800008 - input method manager service error.
     * @throws { BusinessError } 12800010 - not default input method configured by system.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    exitCurrentInputType(): Promise<void>;
  }

  /**
   * @interface InputMethodEngine
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  interface InputMethodEngine {
    /**
     * Subscribe 'inputStart'
     *
     * @param { 'inputStart' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback of on('inputStart').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(
      type: 'inputStart',
      callback: (kbController: KeyboardController, textInputClient: TextInputClient) => void
    ): void;

    /**
     * Unsubscribe 'inputStart'
     *
     * @param { 'inputStart' } type - indicates the type of subscribe event.
     * @param { function } callback - optional, indicates the callback of off('inputStart').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(
      type: 'inputStart',
      callback?: (kbController: KeyboardController, textInputClient: TextInputClient) => void
    ): void;

    /**
     * Subscribe 'keyboardShow'|'keyboardHide'
     *
     * @param { 'keyboardShow' | 'keyboardHide' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback of on('keyboardShow'|'keyboardHide').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(type: 'keyboardShow' | 'keyboardHide', callback: () => void): void;

    /**
     * Unsubscribe 'keyboardShow'|'keyboardHide'
     *
     * @param { 'keyboardShow' | 'keyboardHide' } type - indicates the type of subscribe event.
     * @param { function } [callback] - optional, indicates the callback of off('keyboardShow'|'keyboardHide').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(type: 'keyboardShow' | 'keyboardHide', callback?: () => void): void;
  }

  /**
   * <p>Control events about IME.</p>
   * <p>Events provided for IME to subscribe with callback function. When those events occur, the corresponding callback
   * will be invoked.</p>
   *
   * @interface InputMethodAbility
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  interface InputMethodAbility {
    /**
     * Subscribe 'inputStart' event.
     *
     * @param { 'inputStart' } type - the type of subscribe event.
     * @param { function } callback - the callback of on('inputStart').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    on(type: 'inputStart', callback: (kbController: KeyboardController, inputClient: InputClient) => void): void;

    /**
     * Unsubscribe 'inputStart' event.
     *
     * @param { 'inputStart' } type - the type of unsubscribe event.
     * @param { function } [callback] - optional, the callback of off('inputStart').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    off(type: 'inputStart', callback?: (kbController: KeyboardController, inputClient: InputClient) => void): void;

    /**
     * Subscribe 'inputStop'.
     *
     * @param { 'inputStop' } type - the type of subscribe event.
     * @param { function } callback - the callback of on('inputStop').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    on(type: 'inputStop', callback: () => void): void;

    /**
     * Unsubscribe 'inputStop'.
     *
     * @param { 'inputStop' } type - the type of unsubscribe event.
     * @param { function } callback - the callback of off('inputStop').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    off(type: 'inputStop', callback: () => void): void;

    /**
     * Subscribe 'setCallingWindow'.
     *
     * @param { 'setCallingWindow' } type - the type of subscribe event.
     * @param { function } callback - the callback of on('setCallingWindow').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    on(type: 'setCallingWindow', callback: (wid: number) => void): void;

    /**
     * Unsubscribe 'setCallingWindow'.
     *
     * @param { 'setCallingWindow' } type - the type of unsubscribe event.
     * @param { function } callback - the callback of off('setCallingWindow').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    off(type: 'setCallingWindow', callback: (wid: number) => void): void;

    /**
     * Subscribe 'keyboardShow'|'keyboardHide'.
     *
     * @param { 'keyboardShow' | 'keyboardHide' } type - the type of subscribe event.
     * @param { function } callback - the callback of on('keyboardShow'|'keyboardHide').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    on(type: 'keyboardShow' | 'keyboardHide', callback: () => void): void;

    /**
     * Unsubscribe 'keyboardShow'|'keyboardHide'.
     *
     * @param { 'keyboardShow' | 'keyboardHide' } type - the type of unsubscribe event.
     * @param { function } [callback] - the callback of off('keyboardShow'|'keyboardHide').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    off(type: 'keyboardShow' | 'keyboardHide', callback?: () => void): void;

    /**
     * Subscribe 'setSubtype'.
     *
     * @param { 'setSubtype' } type - the type of subscribe event.
     * @param { function } callback - the callback of on('setSubtype').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    on(type: 'setSubtype', callback: (inputMethodSubtype: InputMethodSubtype) => void): void;

    /**
     * Unsubscribe 'setSubtype'.
     *
     * @param { 'setSubtype' } type - the type of subscribe event.
     * @param { function } [callback] - the callback of off('setSubtype').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    off(type: 'setSubtype', callback?: (inputMethodSubtype: InputMethodSubtype) => void): void;

    /**
     * Subscribe 'securityModeChange' event.
     *
     * @param { 'securityModeChange' } type - the type of subscribe event.
     * @param { Callback<SecurityMode> } callback - the callback of on('securityModeChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    on(type: 'securityModeChange', callback: Callback<SecurityMode>): void;

    /**
     * Unsubscribe 'securityModeChange' event.
     *
     * @param { 'securityModeChange' } type - the type of unsubscribe event.
     * @param { Callback<SecurityMode> } [callback] - optional, the callback of off('securityModeChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    off(type: 'securityModeChange', callback?: Callback<SecurityMode>): void;

    /**
     * Subscribe 'privateCommand'.This function can only be called by default input method configured by system.
     *
     * @param { 'privateCommand' } type - indicates the type of subscribe event.
     * @param { Callback<Record<string, CommandDataType>> } callback - indicates the callback of on('privateCommand').
     * @throws { BusinessError } 12800010 - not default input method configured by system.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    on(type: 'privateCommand', callback: Callback<Record<string, CommandDataType>>): void;

    /**
     * Unsubscribe 'privateCommand'.This function can only be called by default input method configured by system.
     *
     * @param { 'privateCommand' } type - indicates the type of subscribe event.
     * @param { Callback<Record<string, CommandDataType>> } [callback] - optional,
     * indicates the callback of off('privateCommand').
     * @throws { BusinessError } 12800010 - not default input method configured by system.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    off(type: 'privateCommand', callback?: Callback<Record<string, CommandDataType>>): void;

    /**
     * Get input method's security mode.
     *
     * @returns { SecurityMode } return security mode.
     * @throws { BusinessError } 12800004 - not an input method extension.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    getSecurityMode(): SecurityMode;

    /**
     * Creates a panel.
     * <p>The system only allows one soft keyboard and one status bar to be created.</p>
     *
     * @param { BaseContext } ctx - indicates the context on which the window depends.
     * @param { PanelInfo } info - the info of panel to be created.
     * @param { AsyncCallback<Panel> } callback - the callback of createPanel.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 
     * @throws { BusinessError } 12800004 - not an input method extension.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    createPanel(ctx: BaseContext, info: PanelInfo, callback: AsyncCallback<Panel>): void;

    /**
     * Creates a panel.
     * <p>The system only allows one soft keyboard and one status bar to be created.</p>
     *
     * @param { BaseContext } ctx - indicates the context on which the window depends.
     * @param { PanelInfo } info - the info of panel to be created.
     * @returns { Promise<Panel> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types;
     * @throws { BusinessError } 12800004 - not an input method extension.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    createPanel(ctx: BaseContext, info: PanelInfo): Promise<Panel>;

    /**
     * Destroys a panel.
     *
     * @param { Panel } panel - to be destroyed.
     * @param { AsyncCallback<void> } callback - the callback of destroyPanel.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    destroyPanel(panel: Panel, callback: AsyncCallback<void>): void;

    /**
     * Destroys a panel.
     *
     * @param { Panel } panel - to be destroyed.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    destroyPanel(panel: Panel): Promise<void>;
  }

  /**
   * @interface TextInputClient
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   * @deprecated since 9
   * @useinstead inputMethodEngine#InputClient
   */
  interface TextInputClient {
    /**
     * @param { number } action - action indicates the function of "enter" key.
     * @param { AsyncCallback<boolean> } callback - the callback of sendKeyFunction.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#sendKeyFunction
     */
    sendKeyFunction(action: number, callback: AsyncCallback<boolean>): void;

    /**
     * @param { number } action - action indicates the function of "enter" key.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#sendKeyFunction
     */
    sendKeyFunction(action: number): Promise<boolean>;

    /**
     * @param { number } length - length of text which will be deleted forward.
     * @param { AsyncCallback<boolean> } callback - the callback of deleteForward.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#deleteForward
     */
    deleteForward(length: number, callback: AsyncCallback<boolean>): void;

    /**
     * @param { number } length - length of text which will be deleted forward.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#deleteForward
     */
    deleteForward(length: number): Promise<boolean>;

    /**
     * @param { number } length - length of text which will be deleted backward.
     * @param { AsyncCallback<boolean> } callback - the callback of deleteBackward.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#deleteBackward
     */
    deleteBackward(length: number, callback: AsyncCallback<boolean>): void;

    /**
     * @param { number } length - length of text which will be deleted backward.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#deleteBackward
     */
    deleteBackward(length: number): Promise<boolean>;

    /**
     * @param { string } text - text which will be inserted.
     * @param { AsyncCallback<boolean> } callback - the callback of insertText.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#insertText
     */
    insertText(text: string, callback: AsyncCallback<boolean>): void;

    /**
     * @param { string } text - text which will be inserted.
     * @returns { Promise<boolean> } the promise returned by the function
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#insertText
     */
    insertText(text: string): Promise<boolean>;

    /**
     * @param { number } length - the length of text which will be got.
     * @param { AsyncCallback<string> } callback - the callback of getForward.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getForward
     */
    getForward(length: number, callback: AsyncCallback<string>): void;

    /**
     * @param { number } length - the length of text which will be got.
     * @returns { Promise<string> } the promise returned by the function
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getForward
     */
    getForward(length: number): Promise<string>;

    /**
     * @param { number } length - the length of text which will be got.
     * @param { AsyncCallback<string> } callback - the callback of getBackward.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getBackward
     */
    getBackward(length: number, callback: AsyncCallback<string>): void;

    /**
     * @param { number } length - the length of text which will be got.
     * @returns { Promise<string> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getBackward
     */
    getBackward(length: number): Promise<string>;

    /**
     * @param { AsyncCallback<EditorAttribute> } callback - the callback of getEditorAttribute.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getEditorAttribute
     */
    getEditorAttribute(callback: AsyncCallback<EditorAttribute>): void;

    /**
     * @returns { Promise<EditorAttribute> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     * @deprecated since 9
     * @useinstead inputMethodEngine.InputClient#getEditorAttribute
     */
    getEditorAttribute(): Promise<EditorAttribute>;
  }

  /**
   * Control events about Editor.
   *
   * @interface InputClient
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 9
   */
  interface InputClient {
    /**
     * Send the function of the key.
     *
     * @param { number } action - action indicates the function of "enter" key.
     * @param { AsyncCallback<boolean> } callback - the callback of sendKeyFunction.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    sendKeyFunction(action: number, callback: AsyncCallback<boolean>): void;

    /**
     * Send the function of the key.
     *
     * @param { number } action - action indicates the function of "enter" key.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    sendKeyFunction(action: number): Promise<boolean>;

    /**
     * Delete text forward.
     *
     * @param { number } length - length of text which will be deleted forward. It can't be less than 0.
     * @param { AsyncCallback<boolean> } callback - the callback of deleteForward.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    deleteForward(length: number, callback: AsyncCallback<boolean>): void;

    /**
     * Delete text forward.
     *
     * @param { number } length - length of text which will be deleted forward. It can't be less than 0.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    deleteForward(length: number): Promise<boolean>;

    /**
     * Delete text forward.
     *
     * @param { number } length - length of text which will be deleted forward. It can't be less than 0.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800002 - input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    deleteForwardSync(length: number): void;

    /**
     * Delete text backward.
     *
     * @param { number } length - length of text which will be deleted backward. It can't be less than 0.
     * @param { AsyncCallback<boolean> } callback - the callback of deleteBackward.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    deleteBackward(length: number, callback: AsyncCallback<boolean>): void;

    /**
     * Delete text backward.
     *
     * @param { number } length - length of text which will be deleted backward. It can't be less than 0.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    deleteBackward(length: number): Promise<boolean>;

    /**
     * Delete text backward.
     *
     * @param { number } length - length of text which will be deleted backward. It can't be less than 0.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800002 - input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    deleteBackwardSync(length: number): void;

    /**
     * Insert text into Editor.
     *
     * @param { string } text - text which will be inserted.
     * @param { AsyncCallback<boolean> } callback - the callback of insertText.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    insertText(text: string, callback: AsyncCallback<boolean>): void;

    /**
     * Insert text into Editor.
     *
     * @param { string } text - text which will be inserted.
     * @returns { Promise<boolean> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - Input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    insertText(text: string): Promise<boolean>;

    /**
     * Insert text into Editor.
     *
     * @param { string } text - text which will be inserted.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800002 - input method engine error.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    insertTextSync(text: string): void;

    /**
     * Get the text before cursor.
     *
     * @param { number } length - the length of text which will be got. It can't be less than 0.
     * @param { AsyncCallback<string> } callback - the callback of getForward.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getForward(length: number, callback: AsyncCallback<string>): void;

    /**
     * Get the text before cursor.
     *
     * @param { number } length - the length of text which will be got. It can't be less than 0.
     * @returns { Promise<string> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getForward(length: number): Promise<string>;

    /**
     * Get the text before cursor.
     *
     * @param { number } length - the length of text which will be got. It can't be less than 0.
     * @returns { string } the text string before cursor.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getForwardSync(length: number): string;

    /**
     * Get the text after cursor.
     *
     * @param { number } length - the length of text which will be got.It can't be less than 0.
     * @param { AsyncCallback<string> } callback - the callback of getBackward.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getBackward(length: number, callback: AsyncCallback<string>): void;

    /**
     * Get the text after cursor.
     *
     * @param { number } length - the length of text which will be got.It can't be less than 0.
     * @returns { Promise<string> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes: 
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getBackward(length: number): Promise<string>;

    /**
     * Get the text after cursor.
     *
     * @param { number } length - the length of text which will be got. It can't be less than 0.
     * @returns { string } the text string after cursor.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getBackwardSync(length: number): string;

    /**
     * Get attribute about editor.
     *
     * @param { AsyncCallback<EditorAttribute> } callback - the callback of getEditorAttribute.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getEditorAttribute(callback: AsyncCallback<EditorAttribute>): void;

    /**
     * Get attribute about editor.
     *
     * @returns { Promise<EditorAttribute> } the promise returned by the function.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    getEditorAttribute(): Promise<EditorAttribute>;

    /**
     * Get attribute about editor.
     *
     * @returns { EditorAttribute } the attribute of editor.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getEditorAttributeSync(): EditorAttribute;

    /**
     * Move cursor from input method.
     *
     * @param { number } direction - Indicates the distance of cursor to be moved. It can't be less than 0.
     * @param { AsyncCallback<void> } callback - the callback of moveCursor.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    moveCursor(direction: number, callback: AsyncCallback<void>): void;

    /**
     * Move cursor from input method.
     *
     * @param { number } direction - Indicates the distance of cursor to be moved. It can't be less than 0.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 9
     */
    moveCursor(direction: number): Promise<void>;

    /**
     * Move cursor from input method.
     *
     * @param { number } direction - Indicates the distance of cursor to be moved. It can't be less than 0.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *    1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    moveCursorSync(direction: number): void;

    /**
     * Select text in editor by range.
     *
     * @param { Range } range - indicates the range of selected text in editor.
     * @param { AsyncCallback<void> } callback - the callback of selectByRange.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByRange(range: Range, callback: AsyncCallback<void>): void;

    /**
     * Select text in editor by range.
     *
     * @param { Range } range - indicates the range of selected text in editor.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *    1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByRange(range: Range): Promise<void>;

    /**
     * Select text in editor by range.
     *
     * @param { Range } range - indicates the range of selected text in editor.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByRangeSync(range: Range): void;

    /**
     * Select text in editor by cursor movement.
     *
     * @param { Movement } movement - indicates the movement of cursor when selecting.
     * @param { AsyncCallback<void> } callback - the callback of selectByMovement.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByMovement(movement: Movement, callback: AsyncCallback<void>): void;

    /**
     * Select text in editor by cursor movement.
     *
     * @param { Movement } movement - indicates the movement of cursor when selecting.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByMovement(movement: Movement): Promise<void>;

    /**
     * Select text in editor by cursor movement.
     *
     * @param { Movement } movement - indicates the movement of cursor when selecting.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @throws { BusinessError } 12800003 - input method client error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    selectByMovementSync(movement: Movement): void;

    /**
     * Get the index number of text at cursor.
     *
     * @param { AsyncCallback<number> } callback - the callback of getTextIndexAtCursor, number represents the index
     *        number of text at cursor.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getTextIndexAtCursor(callback: AsyncCallback<number>): void;

    /**
     * Get the index number of text at cursor.
     *
     * @returns { Promise<number> } the promise returned by the function, number represents the index number of text
     *          at cursor.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getTextIndexAtCursor(): Promise<number>;

    /**
     * Get the index number of text at cursor.
     *
     * @returns { number } the index number of text at cursor.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    getTextIndexAtCursorSync(): number;

    /**
     * Send extend action code.
     *
     * @param { ExtendAction } action - action code which will be send.
     * @param { AsyncCallback<void> } callback - the callback of sendExtendAction.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    sendExtendAction(action: ExtendAction, callback: AsyncCallback<void>): void;

    /**
     * Send extend action code.
     *
     * @param { ExtendAction } action - action code which will be send.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800006 - Input method controller error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    sendExtendAction(action: ExtendAction): Promise<void>;

    /**
     * Send private command.This function can only be called by default input method configured by system.
     *
     * @param { Record<string, CommandDataType> } commandData - command data which will be send.Max size 32KB.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800010 - not default input method configured by system.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    sendPrivateCommand(commandData: Record<string, CommandDataType>): Promise<void>;

    /**
     * Get info of the calling window.
     *
     * @returns { Promise<WindowInfo> } the promise returned by the function.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800012 - input method panel doesn't exist.
     * @throws { BusinessError } 12800013 - window manager service error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    getCallingWindowInfo(): Promise<WindowInfo>;

    /**
     * Insert the provided text as preview text.
     *
     * @param { string } text - the text to be previewed.
     * @param { Range } range - the range of the text to be replaced by the preview text.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *    1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800011 - text preview is not supported.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    setPreviewText(text: string, range: Range): Promise<void>;

    /**
     * Insert the provided text as preview text.
     *
     * @param { string } text - the text to be previewed.
     * @param { Range } range - the range of the text to be replaced by the preview text.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800011 - text preview is not supported.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    setPreviewTextSync(text: string, range: Range): void;

    /**
     * Finish the text preview.
     *
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800011 - text preview is not supported.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    finishTextPreview(): Promise<void>;

    /**
     * Finish the text preview.
     *
     * @throws { BusinessError } 12800003 - input method client error.
     * @throws { BusinessError } 12800011 - text preview is not supported.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    finishTextPreviewSync(): void;
  }

  /**
   * @interface KeyboardDelegate
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  interface KeyboardDelegate {
    /**
     * Subscribe key up or down event
     *
     * @param { 'keyDown' | 'keyUp' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function of on('keyDown'|'keyUp').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(type: 'keyDown' | 'keyUp', callback: (event: KeyEvent) => boolean): void;

    /**
     * Unsubscribe key up or down event
     *
     * @param { 'keyDown' | 'keyUp' } type - indicates the type of unsubscribe event.
     * @param { function } [callback] - optional, indicates the callback function of off('keyDown'|'keyUp').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(type: 'keyDown' | 'keyUp', callback?: (event: KeyEvent) => boolean): void;

    /**
     * Subscribe key event.
     *
     * @param { 'keyEvent' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function of on('keyEvent').
     *     If the key is processed by event subscriber, callback should be return true, else return false.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    on(type: 'keyEvent', callback: (event: InputKeyEvent) => boolean): void;

    /**
     * Unsubscribe key event.
     *
     * @param { 'keyEvent' } type - indicates the type of unsubscribe event.
     * @param { function } [callback] - optional, indicates the callback function of off('keyEvent').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    off(type: 'keyEvent', callback?: (event: InputKeyEvent) => boolean): void;

    /**
     * Subscribe cursor context change
     *
     * @param { 'cursorContextChange' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function of on('cursorContextChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(type: 'cursorContextChange', callback: (x: number, y: number, height: number) => void): void;

    /**
     * Unsubscribe cursor context change
     *
     * @param { 'cursorContextChange' } type - indicates the type of unsubscribe event.
     * @param { function } [callback] - optional, indicates the callback function of off('cursorContextChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(type: 'cursorContextChange', callback?: (x: number, y: number, height: number) => void): void;

    /**
     * Subscribe selection change
     *
     * @param { 'selectionChange' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function
     * of on('selectionChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(
      type: 'selectionChange',
      callback: (oldBegin: number, oldEnd: number, newBegin: number, newEnd: number) => void
    ): void;

    /**
     * Unsubscribe selection change
     *
     * @param { 'selectionChange' } type - indicates the type of unsubscribe event.
     * @param { function } [callback] - optional,
     * indicates the callback function of off('selectionChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(
      type: 'selectionChange',
      callback?: (oldBegin: number, oldEnd: number, newBegin: number, newEnd: number) => void
    ): void;

    /**
     * Subscribe text change
     *
     * @param { 'textChange' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function of on('textChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    on(type: 'textChange', callback: (text: string) => void): void;

    /**
     * Unsubscribe text change
     *
     * @param { 'textChange' } type - indicates the type of unsubscribe event.
     * @param { function } [callback] - optional, indicates the callback function of off('textChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    off(type: 'textChange', callback?: (text: string) => void): void;

    /**
     * Subscribe input text attribute change
     *
     * @param { 'editorAttributeChanged' } type - indicates the type of subscribe event.
     * @param { function } callback - indicates the callback function of on('editorAttributeChanged').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    on(type: 'editorAttributeChanged', callback: (attr: EditorAttribute) => void): void;

    /**
     * Unsubscribe input text attribute change
     *
     * @param { 'editorAttributeChanged' } type - indicates the type of subscribe event.
     * @param { function } [callback] - indicates the callback function of off('editorAttributeChanged').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    off(type: 'editorAttributeChanged', callback?: (attr: EditorAttribute) => void): void;
  }

  /**
   * A panel is a container used to hold soft keyboard, candidate list, or status bar.
   *
   * @interface Panel
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  interface Panel {
    /**
     * Sets ui content.
     * <p>When this method is executed successfully, the content of panel will be replaced.</p>
     *
     * @param { string } path - the path of ui content.
     * @param { AsyncCallback<void> } callback - the callback of setUiContent.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    setUiContent(path: string, callback: AsyncCallback<void>): void;

    /**
     * Sets ui content.
     * <p>When this method is executed successfully, the content of panel will be replaced.</p>
     *
     * @param { string } path - the path of ui content.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    setUiContent(path: string): Promise<void>;

    /**
     * Sets ui content.
     * <p>When this method is executed successfully, the content of panel will be replaced.</p>
     *
     * @param { string } path - the path of ui content.
     * @param { LocalStorage } storage - the data object shared within the content instance loaded by the panel.
     * @param { AsyncCallback<void> } callback - the callback of setUiContent.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    setUiContent(path: string, storage: LocalStorage, callback: AsyncCallback<void>): void;

    /**
     * Sets ui content.
     * <p>When this method is executed successfully, the content of panel will be replaced.</p>
     *
     * @param { string } path - the path of ui content.
     * @param { LocalStorage } storage - the data object shared within the content instance loaded by the panel.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    setUiContent(path: string, storage: LocalStorage): Promise<void>;

    /**
     * Resizes a panel.
     *
     * @param { number } width - the new width of the panel.
     * @param { number } height - the new height of the panel.
     * @param { AsyncCallback<void> } callback - the callback of resize.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    resize(width: number, height: number, callback: AsyncCallback<void>): void;

    /**
     * Resizes a panel.
     *
     * @param { number } width - the new width of the panel.
     * @param { number } height - the new height of the panel.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    resize(width: number, height: number): Promise<void>;

    /**
     * Moves a panel.
     * <p>It's unusable for SOFT_KEYBOARD panel with FLG_FIXED.</p>
     *
     * @param { number } x - the x-coordinate of the new position.
     * @param { number } y - the y-coordinate of the new position.
     * @param { AsyncCallback<void> } callback - the callback of moveTo.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    moveTo(x: number, y: number, callback: AsyncCallback<void>): void;

    /**
     * Moves a panel.
     * <p>It's unusable for SOFT_KEYBOARD panel with FLG_FIXED.</p>
     *
     * @param { number } x - the x-coordinate of the new position.
     * @param { number } y - the y-coordinate of the new position.
     * @returns { Promise<void> } the promise returned by the function.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    moveTo(x: number, y: number): Promise<void>;

    /**
     * Shows panel.
     *
     * @param { AsyncCallback<void> } callback - the callback of show.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    show(callback: AsyncCallback<void>): void;

    /**
     * Shows panel.
     *
     * @returns { Promise<void> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    show(): Promise<void>;

    /**
     * Hides panel.
     *
     * @param { AsyncCallback<void> } callback - the callback of hide.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    hide(callback: AsyncCallback<void>): void;

    /**
     * Hides panel.
     *
     * @returns { Promise<void> } the promise returned by the function.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    hide(): Promise<void>;

    /**
     * Registers panel show event.
     * <p>The "show" events are triggered when the panel is shown.</p>
     *
     * @param { 'show' } type - events type.
     * @param { function } callback - the callback will be called when events are triggered.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    on(type: 'show', callback: () => void): void;

    /**
     * Unregisters panel show event.
     *
     * @param { 'show' } type - events type.
     * @param { function } [callback] - the callback to Unregister.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    off(type: 'show', callback?: () => void): void;

    /**
     * Registers panel hide event.
     * <p>The "hide" events are triggered when the panel is hidden.</p>
     *
     * @param { 'hide' } type - events type.
     * @param { function } callback - the callback will be called when events are triggered.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    on(type: 'hide', callback: () => void): void;

    /**
     * Unregisters panel hide event.
     *
     * @param { 'hide' } type - events type.
     * @param { function } [callback] - the callback to Unregister.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    off(type: 'hide', callback?: () => void): void;

    /**
     * Changes panel flag.
     * <p>Before flag is changed, Developers should hide the panel.After that, developers can change the content, size, point of the panel
     *    and show it again at appropriate opportunity.</p>
     *
     * @param { PanelFlag } flag - the callback of changeFlag.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    changeFlag(flag: PanelFlag): void;

    /**
     * Sets ime panel private mode or not.
     *
     * @permission ohos.permission.PRIVACY_WINDOW
     * @param { boolean } isPrivacyMode - if the value is true, the privacy mode will be set,
     * otherwise the non-privacy mode will be set.
     * @throws { BusinessError } 201 - permissions check fails.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    setPrivacyMode(isPrivacyMode: boolean): void;

    /**
     * Adjust the rect of soft keyboard panel for landscape and portrait orientations.
     * <p>It's only used for SOFT_KEYBOARD panel with FLG_FIXED and FLG_FLOATING.</p>
     *
     * @param { PanelFlag } flag - panel flag.
     * @param { PanelRect } rect - panel rect.
     * @throws { BusinessError } 401 - parameter error. Possible causes:
     *     1.Mandatory parameters are left unspecified; 2.Incorrect parameter types; 3.Parameter verification failed.
     * @throws { BusinessError } 12800013 - window manager service error.
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    adjustPanelRect(flag: PanelFlag, rect: PanelRect): void;

    /**
     * Subscribe 'sizeChange' event.
     * <p>It's only used for SOFT_KEYBOARD panel with FLG_FIXED and FLG_FLOATING.</p>
     *
     * @param { 'sizeChange' } type - the type of subscribe event.
     * @param { Callback<window.Size> } callback - the callback of on('sizeChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    on(type: 'sizeChange', callback: Callback<window.Size>): void;

    /**
     * Unsubscribe 'sizeChange' event.
     * <p>It's only used for SOFT_KEYBOARD panel with FLG_FIXED and FLG_FLOATING.</p>
     *
     * @param { 'sizeChange' } type - the type of unsubscribe event.
     * @param { Callback<window.Size> } [callback] - optional, the callback of off('sizeChange').
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    off(type: 'sizeChange', callback?: Callback<window.Size>): void;
  }

  /**
   * @interface EditorAttribute
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  interface EditorAttribute {
    /**
     * Editor's pattern
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    readonly inputPattern: number;

    /**
     * Editor's key type
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    readonly enterKeyType: number;

    /**
     * Indicates whether the editor supports the text preview.
     *
     * @type { boolean }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    isTextPreviewSupported: boolean;
  }

  /**
   * @interface KeyEvent
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 8
   */
  interface KeyEvent {
    /**
     * Key code
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    readonly keyCode: number;

    /**
     * Key action
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 8
     */
    readonly keyAction: number;
  }

  /**
   * Enumerates the flags of panel
   *
   * @enum { number }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export enum PanelFlag {
    /**
     * Fixed style.
     * <p>It's provided for the panel with type of SOFT_KEYBOARD.
     * When the flag is set, the soft keyboard is fixed at the bottom of the screen.</p>
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    FLG_FIXED = 0,

    /**
     * Floating style.
     * <p>It's provided for the panel with type of SOFT_KEYBOARD.
     * When the flag is set, the soft keyboard is floating.</p>
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    FLG_FLOATING
  }

  /**
   * <p>Panel types provided for input method applications.</p>
   * <p>Input method application developers should select the appropriate panel type according to the user scenario.</p>
   *
   * @enum { number }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export enum PanelType {
    /**
     * Panel for displaying a virtual software keyboard.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    SOFT_KEYBOARD = 0,

    /**
     * Panel for displaying status bar.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    STATUS_BAR
  }

  /**
   * Panel information.
   *
   * @typedef PanelInfo
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export interface PanelInfo {
    /**
     * Panel type.
     *
     * @type { PanelType }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    type: PanelType;

    /**
     * <p>Flag of Panel.</p>
     * <p>Currently only using for SOFT_KEYBOARD panel.</p>
     *
     * @type { ?PanelFlag }
     * @default FLG_FIXED
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    flag?: PanelFlag;
  }

  /**
   * Enumerates the moving direction of cursor
   *
   * @enum { number }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export enum Direction {
    /**
     * Cursor moves up
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    CURSOR_UP = 1,

    /**
     * Cursor moves down
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    CURSOR_DOWN,

    /**
     * Cursor moves left
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    CURSOR_LEFT,

    /**
     * Cursor moves right
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    CURSOR_RIGHT
  }

  /**
   * Enumerates the security mode.
   *
   * @enum { number }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 11
   */
  export enum SecurityMode {
    /**
     * Basic security mode
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    BASIC = 0,
    /**
     * Full security mode
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 11
     */
    FULL
  }

  /**
   * Range of selected text.
   *
   * @interface Range
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export interface Range {
    /**
     * Indicates the index of the first character of the selected text.
     *
     * @type { number }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    start: number;

    /**
     * Indicates the index of the last character of the selected text.
     *
     * @type { number }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    end: number;
  }

  /**
   * Movement of cursor.
   *
   * @interface Movement
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export interface Movement {
    /**
     * Indicates the direction of cursor movement
     *
     * @type { Direction }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    direction: Direction;
  }

  /**
   * Enumerates the extend action.
   *
   * @enum { number }
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 10
   */
  export enum ExtendAction {
    /**
     * Select all text.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    SELECT_ALL = 0,

    /**
     * Cut selecting text.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    CUT = 3,

    /**
     * Copy selecting text.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    COPY = 4,

    /**
     * Paste from paste board.
     *
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 10
     */
    PASTE = 5
  }

  /**
   * Window info.
   *
   * @interface WindowInfo
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 12
   */
  export interface WindowInfo {
    /**
     * Rectangle.
     *
     * @type { window.Rect }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    rect: window.Rect;

    /**
     * Window status.
     *
     * @type { window.WindowStatusType }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    status: window.WindowStatusType;
  }

  /**
   * Panel Rect.
   *
   * @interface PanelRect
   * @syscap SystemCapability.MiscServices.InputMethodFramework
   * @since 12
   */
  export interface PanelRect {
    /**
     * Panel rect in landscape orientation.
     *
     * @type { window.Rect }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    landscapeRect: window.Rect;

    /**
     * Panel rect in portrait orientation.
     *
     * @type { window.Rect }
     * @syscap SystemCapability.MiscServices.InputMethodFramework
     * @since 12
     */
    portraitRect: window.Rect;
  }
}

export default inputMethodEngine;