var gAS_Controller = {
  Cc: Components.classes,
  Ci: Components.interfaces,
  _password: null,
  _firstTime: true,

  init: function()
  {
    this._buildLoginList();
    this.updateUI();
  },

  updateUI: function()
  {
    var cs = document.getElementById("credentialsSource");
    var isCustom = cs.value == "custom";
    document.getElementById("username").disabled = !isCustom;
    document.getElementById("password").disabled = !isCustom;
    document.getElementById("lastFmUsername").disabled = isCustom;
  },

  passwordSyncTo: function()
  {
    var plaintext = document.getElementById("password").value;
    this._password = plaintext;
    if(plaintext.length > 0) {
      var as = this.Cc["@skrul.com/audioscrobbler-service;1"]
                      .getService(this.Ci.sbIAudioscrobblerService);
      return as.hashPassword(plaintext);
    }
    else {
      return "";
    }
  },

  passwordSyncFrom: function()
  {
    // If this is the first time, we don't know what the password is yet
    if(this._firstTime) {
      this._firstTime = false;
      var value = document.getElementById("preference.password").value;
      // If the password pref is blank, return a blank so the textbox is
      // empty.  Otherwise just put an arbitrary value in there to represent
      // the saved password
      if(value == "") {
        this._password = "";
      }
      else {
        this._password = "xxxxxxxxxx";
      }
    }
    return this._password;
  },

  _buildLoginList: function()
  {
    var menulist = document.getElementById("lastFmUsername");
    var usernames = [];
    var pm = this.Cc["@mozilla.org/passwordmanager;1"]
                    .getService(this.Ci.nsIPasswordManager);
    var e = pm.enumerator;
    var i = 0;
    while(e.hasMoreElements()) {
      var password = e.getNext();
      if(password.host == "last.fm" || password.host == "www.last.fm") {
        menulist.insertItemAt(i, password.user, password.user, "");
        i++;
      }
    }

    if(i == 0) {
      menulist.insertItemAt(0, "<none>", "-1", "");
      menulist.selectedIndex = 0;
    }

  }

}