Import supervised user dialog

chrome/browser/resources/md_user_manager/import_supervised_user.js

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+/**
+ * @fileoverview 'import-supervised-user' is a popup that allows user to select
+ * a supervised profile from a list of profiles to import on the current device.
+ */
+(function() {
+/**
+ * It means no supervised user is selected.
+ * @const {number}
+ */
+var NO_USER_SELECTED = -1;
+
+Polymer({
+  is: 'import-supervised-user',
+
+  behaviors: [
+    I18nBehavior,
+  ],
+
+  properties: {
+    /**
+     * True if the element is currently hidden.
+     * @private {boolean}
+     */
+    hidden_: {

[tommycli, 2016/04/18 23:27:18]

Maybe clarify the var name and comment to indicate that this is a dialog element
that hides and shows itself.

[Moe, 2016/04/19 21:47:43]

Done.

+      type: Boolean,
+      value: true
+    },
+
+    /**
+     * The currently signed in user and the custodian.
+     * @private {?SignedInUser}
+     */
+    signedInUser_: {
+      type: Object,
+      value: function() { return null; },

[tommycli, 2016/04/18 23:27:18]

nit: all of the final values have no comma, except this one. Either style is
fine (I personally prefer trailing commas), just consistent is better.

[Moe, 2016/04/19 21:47:43]

Done.

+    },
+
+    /**
+     * The list of supervised users managed by signedInUser_.
+     * @private {!Array<!SupervisedUser>}
+     */
+    supervisedUsers_: {
+      type: Array,
+      value: function() { return []; }
+    },
+
+    /**
+     * Index of the selected supervised user.
+     * @private {number}
+     */
+    supervisedUserIndex_: {
+      type: Number,
+      value: NO_USER_SELECTED
+    },
+
+    /**
+     * Supervised user import message.
+     * @private {string}
+     */
+    message_: {
+      type: String,
+      value: ''
+    }
+  },
+
+  /**
+   * Displays the popup.
+   * @param {SignedInUser} signedInUser
+   * @param {Array<!SupervisedUser>} supervisedUsers
+   */
+  show: function(signedInUser, supervisedUsers) {
+    this.signedInUser_ = signedInUser || null;
+    this.supervisedUsers_ = this.sortSupervisedUsers_(supervisedUsers || []);
+    this.supervisedUserIndex_ = NO_USER_SELECTED;
+    this.message_ = this.supervisedUsers_.length > 0 ?
+        this.i18n('supervisedUserImportText') :
+        this.i18n('noSupervisedUserImportText');
+    if (this.signedInUser_)
+      this.hidden_ = false;
+  },
+
+  /**
+   * Sorts supervised users.
+   * @param {!Array<!SupervisedUser>} supervisedUsers Array of supervised users.
+   * @return {!Array<!SupervisedUser>} Sorted array of supervised users.
+   * @private
+   */
+  sortSupervisedUsers_: function(supervisedUsers) {

[tommycli, 2016/04/18 23:27:18]

Since this method is only used once and is private, we can just inline the
sorting functionality within 'show'

[Moe, 2016/04/19 21:47:43]

Done.

+    supervisedUsers.sort(function(a, b) {
+      if (a.onCurrentDevice != b.onCurrentDevice)
+        return a.onCurrentDevice ? 1 : -1;
+      return a.name.localeCompare(b.name);
+    });
+    return supervisedUsers;
+  },
+
+  /**
+   * Returns the appropriate class names for the HTML container of
+   * |supervisedUser| depending on if is currently located on the disk.
+   * @param {!SupervisedUser} supervisedUser
+   * @private
+   */
+  getUserClassNames_: function(supervisedUser) {
+    var classNames = 'list-item';
+    if (!supervisedUser.onCurrentDevice) {
+      classNames += ' selectable';
+    }
+    return classNames;
+  },
+
+  /**
+   * Hides the popup.
+   * @private
+   */
+  onCancelTap_: function() {
+    this.hidden_ = true;
+  },
+
+  /**
+   * Returns true if the 'Import' button should be enabled and false otherwise.
+   * @private
+   * @return {boolean}
+   */
+  isImportDisabled_: function(supervisedUserIndex) {
+    return supervisedUserIndex == NO_USER_SELECTED;
+  },
+
+  /**
+   * Called when the user clicks the 'Import' button. it proceeds with importing
+   * the supervised user.
+   * @private
+   */
+  onImportTap_: function() {
+    var supervisedUser = this.supervisedUsers_[this.supervisedUserIndex_];
+    if (this.signedInUser_ && supervisedUser) {
+      // Event is caught by create-profile.
+      this.fire('import', {supervisedUser: supervisedUser,
+                           signedInUser: this.signedInUser_});
+      this.hidden_ = true;
+    }
+  }
+});
+})();