lightdm-webkit2-greeter/themes/gruvbox/js/accounts.js

class Accounts {
  constructor() {
    this._localStorage = window.localStorage;
    this._userImage = document.querySelector("#user-image");
    this._userLabel = document.querySelector("#user-label");
    this._accountsList = document.querySelector("#users-list");
    this._accountsButton = document.querySelector("#users-button");
    this._defaultUser = null;
    this._usersObject = null;
    this._init();
  }

  getDefaultUserName() {
    return this._defaultUser.username;
  }

  _setAccountDefault() {
    var img = this._userImage.querySelector("img");
    img.src = this._defaultUser.image;
    img.onerror = function () {
      img.src = "";
    };
    this._userLabel.innerHTML = `<b>${this._defaultUser.display_name}</b>`;
  }

  _updateOnStartup() {
    var username =
      this._localStorage.getItem("defaultUser") ||
      this._usersObject[0].username;
    var display_name =
      this._localStorage.getItem("defaultUserDisplayName") ||
      this._usersObject[0].display_name;
    var image =
      this._localStorage.getItem("defaultUserProfileImage") ||
      this._usersObject[0].image;
    this._defaultUser = {
      username,
      display_name,
      image,
    };
    this._setAccountDefault();
  }

  _setGuestAccount() {
    if (lightdm.has_guest_account) {
      this._guestAccount = `guest-account-${Math.floor(Math.random() * 1000)}`;
      this._usersObject.push({
        username: this._guestAccount,
        display_name: "Guest",
        image: "",
      });
    }
  }

  _setAccountList() {
    var dropdown = this._accountsList.querySelector(".dropdown");
    dropdown.innerHTML = "";
    for (let i = 0; i < this._usersObject.length; i++) {
      var name = this._usersObject[i].display_name;
      var li = document.createElement("li");
      var button = document.createElement("button");
      button.innerHTML = name;
      button.addEventListener("click", () => {
        this._updateDefaults(this._usersObject[i]);
        this._setAccountDefault();
        authenticate.startAuthentication();
      });

      li.appendChild(button);
      dropdown.appendChild(li);
    }
  }

  _setKeydown() {
    var dropdown = this._accountsList.querySelector(".dropdown");
    dropdown.addEventListener("keydown", (ev) => {
      if (ev.keyCode == 27) {
        dropdown.classList.add("hide");
        this._accountsButton.focus();
      }
    });
  }

  _setButton() {
    var dropdown = this._accountsList.querySelector(".dropdown");
    document.querySelector("#screen").addEventListener("click", (ev) => {
      if (
        ev.target == this._accountsButton ||
        ev.target.parentElement == this._accountsButton
      ) {
        dropdown.classList.toggle("hide");
      } else if (
        ev.target != this._accountsList &&
        ev.target.closest(".dropdown") == null
      ) {
        dropdown.classList.add("hide");
      }
    });
    document.querySelector("#screen").addEventListener("focusin", (ev) => {
      if (
        !dropdown.contains(document.activeElement) &&
        document.activeElement != this._accountsButton
      ) {
        dropdown.classList.add("hide");
      }
    });
  }

  _updateDefaults(userObject) {
    if (!userObject) return;
    this._defaultUser = userObject;

    this._localStorage.setItem("defaultUser", this._defaultUser.username);
    this._localStorage.setItem(
      "defaultUserDisplayName",
      this._defaultUser.display_name
    );
    this._localStorage.setItem(
      "defaultUserProfileImage",
      this._defaultUser.image
    );
  }

  _init() {
    this._usersObject = lightdm.users;
    this._updateOnStartup();
    this._setAccountList();
    this._setButton();
    this._setKeydown();
  }
}