[gnome-shell/wip/rstrode/login-screen-extensions: 11/134] loginDialog: allow timed login with disabled user list

[Ray Strode <halfline src gnome org>]

commit 12333f331c39aa72ef711d45f68a5bcd122a8b9d
Author: Ray Strode <rstrode redhat com>
Date:   Tue Apr 19 13:12:46 2016 -0400

    loginDialog: allow timed login with disabled user list
    
    At the moment the timed login feature is implemented in the user list.
    If there's no user list, we don't show the indicator anywhere and
    don't proceed with timed login.
    
    This commit allows timed login to work when the user list is disabled.
    It accomplishes this by putting the timed login indicator on the
    auth prompt, in that scenario.

 data/theme/gnome-shell-sass/_common.scss |  4 ++++
 js/gdm/authPrompt.js                     | 41 +++++++++++++++++++++++++++++++-
 js/gdm/loginDialog.js                    | 25 +++++++++++++++++--
 3 files changed, 67 insertions(+), 3 deletions(-)
---
diff --git a/data/theme/gnome-shell-sass/_common.scss b/data/theme/gnome-shell-sass/_common.scss
index a6357baad4..c2df282791 100644
--- a/data/theme/gnome-shell-sass/_common.scss
+++ b/data/theme/gnome-shell-sass/_common.scss
@@ -1856,6 +1856,10 @@ StScrollBar {
       padding-bottom: 12px;
       spacing: 8px;
       width: 23em;
+      .login-dialog-timed-login-indicator {
+          height: 2px;
+          background-color: darken($fg_color,40%);
+      }
   }
 
   .login-dialog-prompt-label {
diff --git a/js/gdm/authPrompt.js b/js/gdm/authPrompt.js
index 27eb31a89f..cf77b3f26e 100644
--- a/js/gdm/authPrompt.js
+++ b/js/gdm/authPrompt.js
@@ -1,6 +1,6 @@
 // -*- mode: js; js-indent-level: 4; indent-tabs-mode: nil -*-
 
-const { Clutter, Pango, Shell, St } = imports.gi;
+const { Clutter, GLib, Pango, Shell, St } = imports.gi;
 const Signals = imports.signals;
 
 const Animation = imports.ui.animation;
@@ -111,6 +111,11 @@ var AuthPrompt = class {
 
         this._entry.grab_key_focus();
 
+        this._timedLoginIndicator = new St.Bin({ style_class: 'login-dialog-timed-login-indicator',
+                                                 scale_x: 0 });
+
+        this.actor.add(this._timedLoginIndicator);
+
         this._message = new St.Label({ opacity: 0,
                                        styleClass: 'login-dialog-message' });
         this._message.clutter_text.line_wrap = true;
@@ -135,6 +140,40 @@ var AuthPrompt = class {
         this._defaultButtonWell.add_child(this._spinner.actor);
     }
 
+    showTimedLoginIndicator(time) {
+        let hold = new Batch.Hold();
+
+        this.hideTimedLoginIndicator();
+
+        let startTime = GLib.get_monotonic_time();
+
+        this._timedLoginTimeoutId = GLib.timeout_add (GLib.PRIORITY_DEFAULT, 33,
+            () => {
+                let currentTime = GLib.get_monotonic_time();
+                let elapsedTime = (currentTime - startTime) / GLib.USEC_PER_SEC;
+                this._timedLoginIndicator.scale_x = elapsedTime / time;
+                if (elapsedTime >= time) {
+                    this._timedLoginTimeoutId = 0;
+                    hold.release();
+                    return GLib.SOURCE_REMOVE;
+                }
+
+                return GLib.SOURCE_CONTINUE;
+            });
+
+        GLib.Source.set_name_by_id(this._timedLoginTimeoutId, '[gnome-shell] this._timedLoginTimeoutId');
+
+        return hold;
+    }
+
+    hideTimedLoginIndicator() {
+        if (this._timedLoginTimeoutId) {
+            GLib.source_remove(this._timedLoginTimeoutId);
+            this._timedLoginTimeoutId = 0;
+        }
+        this._timedLoginIndicator.scale_x = 0.;
+    }
+
     _onDestroy() {
         if (this._preemptiveAnswerWatchId) {
             this._idleMonitor.remove_watch(this._preemptiveAnswerWatchId);
diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 6c4d1357d0..b4df6e9598 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -734,6 +734,9 @@ var LoginDialog = GObject.registerClass({
 
             if (this._authPrompt.verificationStatus == AuthPrompt.AuthPromptStatus.NOT_VERIFYING)
                 this._authPrompt.reset();
+
+            if (this._disableUserList && this._timedLoginUserListHold)
+                this._timedLoginUserListHold.release();
         }
     }
 
@@ -1020,16 +1023,31 @@ var LoginDialog = GObject.registerClass({
         let loginItem = null;
         let animationTime;
 
-        let tasks = [() => this._waitForItemForUser(userName),
+        let tasks = [() => {
+                         if (this._disableUserList)
+                             return;
+
+                         this._timedLoginUserListHold = this._waitForItemForUser(userName);
+
+                         return this._timedLoginUserListHold;
+                     },
 
                      () => {
-                         loginItem = this._userList.getItemFromUserName(userName);
+                         this._timedLoginUserListHold = null;
+
+
+                         loginItem = this._disableUserList
+                            ? this._authPrompt
+                            : this._userList.getItemFromUserName(userName);
 
                          // If there is an animation running on the item, reset it.
                          loginItem.hideTimedLoginIndicator();
                      },
 
                      () => {
+                         if (this._disableUserList)
+                             return;
+
                          // If we're just starting out, start on the right item.
                          if (!this._userManager.is_loaded) {
                              this._userList.jumpToItem(loginItem);
@@ -1051,6 +1069,9 @@ var LoginDialog = GObject.registerClass({
                      },
 
                      () => {
+                         if (this._disableUserList)
+                             return;
+
                          // If idle timeout is done, make sure the timed login indicator is shown
                          if (delay > _TIMED_LOGIN_IDLE_THRESHOLD &&
                              this._authPrompt.actor.visible)