/**
 * O HI. I AM AN ORANGUTANG, WOOPA WOOPA
 *
 * Copyright (c) Send a Patch <ludvig@sendapatch.se>, 2010
 */

/**
 * Why does JavaScript not have this?
 */
String.prototype.endsWith = function(v) {
  return this.substring(this.length - v.length) == v;
};

/**
 * Keyboard shortcuts
 */
var shortcuts = new Hash({
  'p': 'python',
  'j': 'js',
  'h': 'html',
  's': 'sql',
  'b': 'bash',
  'c': 'css',
  'space': function(){
    $('lexer').focus();
    return false;
  },
  'enter': function(){
    $$(".bambutton").getParent("form")[0].submit();
    return false;
  }
});

/**
 * Reverse mapping of lexer names to keyboard shortcuts (skips non-lexer
 * shortcuts)
 */
var boundValues = new Hash();
shortcuts.each(function(value, shortcut) {
  if ($type(value) == 'string') {
    boundValues.set(value, shortcut);
  }
});

window.addEvent('keydown', function(event){
  if (event.alt && !(event.meta || event.control)) {
    var s = shortcuts.get(event.shift ? event.key.toUpperCase() : event.key);
    switch ($type(s)) {
      case 'string':
        $('lexer').set('value', s);
        return false;
      case 'function':
        return s.call(event);
    }
  }
});

function updateShortcutTitles(force) {
  var lexerEl = $("lexer");

  lexerEl.getElements("option").each(function(optEl) {
    var shortcut = boundValues.get(optEl.get('value'));
    if (!shortcut)
      return;

    var shortcutHTML = ' &#8211; ';
    if (shortcut == shortcut.toUpperCase()) {
      shortcutHTML += '&#8679;'
    }
    shortcutHTML += '&#8997;' + shortcut.toUpperCase();

    optEl.set('html', optEl.get('html') + shortcutHTML);
  });

  var labelEl = lexerEl.getParent('label');
  labelEl.set('html', labelEl.get('html') + ' &#8211; &#8997; Space');

  var bamEl = $$(".bambutton")[0];
  if (bamEl && !bamEl.value.endsWith(' ⌥↩'))
    bamEl.value += ' ⌥↩';
}

/**
 * Convert the dropdown to a text input if "manual selection" is clicked.
 */
function rebuildLexerIntoText() {
  if (this.get('value') != 'not_in_list')
    return;

  var textInput = new Element(
      'input',
      {type: 'text', value: 'text',
       name: this.name, id: this.id});
  textInput.inject(this.id, 'after');
  textInput.focus();
  this.destroy();
}


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