/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

interface nsIFile;
interface mozIPersonalDictionary;

[scriptable, uuid(8ba643a4-7ddc-4662-b976-7ec123843f10)]

/**
 * This interface represents a SpellChecker.
 */

interface mozISpellCheckingEngine : nsISupports {
  /**
   * The name of the current dictionary. Is either a value from
   * getDictionaryList or the empty string if no dictionary is selected.
   * Setting this attribute to a value not in getDictionaryList will throw
   * NS_ERROR_FILE_NOT_FOUND.
   *
   * The spellcheck engine will send a notification with
   * "spellcheck-dictionary-update" as topic when this changes.
   * If the dictionary is changed to no dictionary (the empty string), an
   * observer is allowed to set another dictionary before it returns.
   */
  attribute wstring dictionary;

  /**
   * The language this spellchecker is using when checking
   *
   * The spellcheck engine will send a notification with
   * "spellcheck-dictionary-update" as topic when this changes.
   */
  readonly attribute wstring language;

  /**
   * Does the engine provide its own personal dictionary?
   */
  readonly attribute boolean providesPersonalDictionary;

  /**
   * Does the engine provide its own word utils?
   */
  readonly attribute boolean providesWordUtils;

  /**
   * The name of the engine
   */
  readonly attribute wstring name;

  /** 
   * a string indicating the copyright of the engine
   */
  readonly attribute wstring copyright;

  /**
   * the personal dictionary
   */
  attribute mozIPersonalDictionary personalDictionary;

  /**
   * Get the list of dictionaries
   */
  void getDictionaryList([array, size_is(count)] out wstring dictionaries, out PRUint32 count);

  /**
   * check a word
   *
   * The spellcheck engine will send a notification with
   * "spellcheck-dictionary-update" as topic when this changes.
   */
  boolean check(in wstring word);

  /**
   * get a list of suggestions for a misspelled word
   *
   * The spellcheck engine will send a notification with
   * "spellcheck-dictionary-update" as topic when this changes.
   */
  void suggest(in wstring word,[array, size_is(count)] out wstring suggestions, out PRUint32 count);

  /**
   * Load dictionaries from the specified dir
   */
  void loadDictionariesFromDir(in nsIFile dir);

  /**
   * Add dictionaries from a directory to the spell checker
   */
  void addDirectory(in nsIFile dir);

  /**
   * Remove dictionaries from a directory from the spell checker
   */
  void removeDirectory(in nsIFile dir);
};

%{C++
#define DICTIONARY_SEARCH_DIRECTORY "DictD"
#define DICTIONARY_SEARCH_DIRECTORY_LIST "DictDL"

#define SPELLCHECK_DICTIONARY_UPDATE_NOTIFICATION \
  "spellcheck-dictionary-update"
%}
