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/**
 * @fileoverview This file contains ASCII input mode class, which is used from
 * ime.js.
 */

'use strict';

console.assert(
    skk.mode, 'ime_mode_interface.js must be loaded prior to this module');

/**
 * Initializes ASCII direct input mode.
 * This mode does nothing; Just receives key event and pass it to system.
 * @constructor
 * @implements {skk.mode.InputModeInterface}
 * @param {skk.IME} ime IME instance.
 */
skk.mode.Ascii = function(ime) {
  this.ime_ = ime;
};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.enter = function() {};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.leave = function() {};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.suspend = function() {};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.resume = function() {};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.prepareForKey = function(keyEvent) {
  if (keyEvent.key === 'j' && keyEvent.ctrlKey) {
    this.ime_.switchMode(skk.InputMode.KANA);
    return null;
  }

  return keyEvent;
};

/**
 * @inheritDoc
 */
skk.mode.Ascii.prototype.addKey = function(keyEvent) { return false; };