/* termemu-keys.js: some key-handling code common to both drivers. */

/* ASCII values of keys 0-9. */
var numShifts = [41, 33, 64, 35, 36, 37, 94, 38, 42, 40];

var keyHexCodes = {
  init: function () {
    this[KeyboardEvent.DOM_VK_RETURN] = ["0d", "0d"];
    this[KeyboardEvent.DOM_VK_SPACE] =  ["20", "20"];
    this[KeyboardEvent.DOM_VK_TAB] =    ["09", "09"];
    this[KeyboardEvent.DOM_VK_BACK_QUOTE] =    ["60", "7e"];
    this[KeyboardEvent.DOM_VK_OPEN_BRACKET] =  ["5b", "7b"];
    this[KeyboardEvent.DOM_VK_CLOSE_BRACKET] = ["5d", "7d"];
    this[KeyboardEvent.DOM_VK_BACK_SLASH] = ["5c", "7c"];
    this[KeyboardEvent.DOM_VK_SEMICOLON] =  ["3b", "3a"];
    this[KeyboardEvent.DOM_VK_QUOTE] =  ["27", "22"];
    this[KeyboardEvent.DOM_VK_COMMA] =  ["2c", "3c"];
    this[KeyboardEvent.DOM_VK_PERIOD] = ["2e", "3e"];
    this[KeyboardEvent.DOM_VK_SLASH] =  ["2f", "3f"];
    this[KeyboardEvent.DOM_VK_EQUALS] = ["3d", "2b"];
    this[KeyboardEvent.DOM_VK_SUBTRACT] =   ["2d", "5f"];
    this[KeyboardEvent.DOM_VK_BACK_SPACE] = ["08", "08"];
    this[KeyboardEvent.DOM_VK_DELETE] = ["1b5b337e", "1b5b337e"];
    this[KeyboardEvent.DOM_VK_ESCAPE] = ["1b", "1b"];
    this[KeyboardEvent.DOM_VK_PAGE_UP] =   ["1b5b357e", "1b5b357e"];
    this[KeyboardEvent.DOM_VK_PAGE_DOWN] = ["1b5b367e", "1b5b367e"];
    this.appCursor(false);
    this.appKeypad(false);
  },
  /* Multi-char control sequences!  Neat! */
  appCursor: function (on) {
    /* Aren't special keys vile? */
    if (on) {
      this[KeyboardEvent.DOM_VK_LEFT] =  ["1b4f44", "1b4f44"];
      this[KeyboardEvent.DOM_VK_RIGHT] = ["1b4f43", "1b4f43"];
      this[KeyboardEvent.DOM_VK_UP] =    ["1b4f41", "1b4f41"];
      this[KeyboardEvent.DOM_VK_DOWN] =  ["1b4f42", "1b4f42"];
      this[KeyboardEvent.DOM_VK_END] =   ["1b4f46", "1b4f46"];
      this[KeyboardEvent.DOM_VK_HOME] =  ["1b4f48", "1b4f48"];
    }
    else {
      this[KeyboardEvent.DOM_VK_LEFT] =  ["1b5b44", "1b5b44"];
      this[KeyboardEvent.DOM_VK_RIGHT] = ["1b5b43", "1b5b43"];
      this[KeyboardEvent.DOM_VK_UP] =    ["1b5b41", "1b5b41"];
      this[KeyboardEvent.DOM_VK_DOWN] =  ["1b5b42", "1b5b42"];
      this[KeyboardEvent.DOM_VK_END] =   ["1b5b46", "1b5b46"];
      this[KeyboardEvent.DOM_VK_HOME] =  ["1b5b48", "1b5b48"];
    }
  },
  appKeypad: function (on) {
    /* In theory, these should produce either numerals or the k[a-c][1-3]
     * sequences.  Since we can't count on the terminfo description actually
     * containing those sequences, pretend they're just arrow keys etc.
     */
    this[KeyboardEvent.DOM_VK_NUMPAD1] = ["1b4f46", "1b4f46"];
    this[KeyboardEvent.DOM_VK_NUMPAD2] = ["1b4f42", "1b4f42"];
    this[KeyboardEvent.DOM_VK_NUMPAD3] = ["1b5b367e", "1b5b367e"];
    this[KeyboardEvent.DOM_VK_NUMPAD4] = ["1b4f44", "1b4f44"];
    this[KeyboardEvent.DOM_VK_NUMPAD5] = ["1b5b45", "1b5b45"];
    this[KeyboardEvent.DOM_VK_NUMPAD6] = ["1b4f43", "1b4f43"];
    this[KeyboardEvent.DOM_VK_NUMPAD7] = ["1b4f48", "1b4f48"];
    this[KeyboardEvent.DOM_VK_NUMPAD8] = ["1b4f41", "1b4f41"];
    this[KeyboardEvent.DOM_VK_NUMPAD9] = ["1b5b357e", "1b5b357e"];
    return;
  }
};