[gnome-flashback] screensaver: redo settings

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 7689e42d55205d57f92fa56380ab57a033fd7ddc
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Tue Dec 10 19:44:38 2019 +0200

    screensaver: redo settings
    
    Rename GfSettings to GfPrefs. GfSettings object is already used in
    backend and has different meaning.
    
    Also remove all deprecated settings - embedded-keyboard-enabled,
    embedded-keyboard-command, idle-activation-enabled, logout-command,
    logout-delay, logout-enabled and status-message-enabled. We are
    not going to use them.

 gnome-flashback/libscreensaver/Makefile.am   |   4 +-
 gnome-flashback/libscreensaver/gf-prefs.c    | 200 ++++++++++++++++
 gnome-flashback/libscreensaver/gf-prefs.h    |  47 ++++
 gnome-flashback/libscreensaver/gf-settings.c | 334 ---------------------------
 gnome-flashback/libscreensaver/gf-settings.h |  61 -----
 5 files changed, 249 insertions(+), 397 deletions(-)
---
diff --git a/gnome-flashback/libscreensaver/Makefile.am b/gnome-flashback/libscreensaver/Makefile.am
index 80e7361..cf113d1 100644
--- a/gnome-flashback/libscreensaver/Makefile.am
+++ b/gnome-flashback/libscreensaver/Makefile.am
@@ -19,10 +19,10 @@ libscreensaver_la_CFLAGS = \
 libscreensaver_la_SOURCES = \
        gf-listener.c \
        gf-listener.h \
+       gf-prefs.c \
+       gf-prefs.h \
        gf-screensaver.c \
        gf-screensaver.h \
-       gf-settings.c \
-       gf-settings.h \
        gf-watcher.c \
        gf-watcher.h \
        $(BUILT_SOURCES) \
diff --git a/gnome-flashback/libscreensaver/gf-prefs.c b/gnome-flashback/libscreensaver/gf-prefs.c
new file mode 100644
index 0000000..82f7122
--- /dev/null
+++ b/gnome-flashback/libscreensaver/gf-prefs.c
@@ -0,0 +1,200 @@
+/*
+ * Copyright (C) 2004-2006 William Jon McCann
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Alberts Muktupāvels <alberts muktupavels gmail com>
+ *     William Jon McCann <mccann jhu edu>
+ */
+
+#include "config.h"
+#include "gf-prefs.h"
+
+#include <gio/gio.h>
+
+struct _GfPrefs
+{
+  GObject    parent;
+
+  GSettings *lockdown;
+  GSettings *screensaver;
+
+  gboolean   lock_disabled;
+  gboolean   user_switch_disabled;
+
+  gboolean   lock_enabled;
+  guint      lock_delay;
+  gboolean   user_switch_enabled;
+};
+
+enum
+{
+  CHANGED,
+
+  LAST_SIGNAL
+};
+
+static guint prefs_signals[LAST_SIGNAL] = { 0 };
+
+G_DEFINE_TYPE (GfPrefs, gf_prefs, G_TYPE_OBJECT)
+
+static void
+lockdown_changed_cb (GSettings   *settings,
+                     const gchar *key,
+                     GfPrefs     *self)
+{
+  if (key == NULL || g_strcmp0 (key, "disable-lock-screen") == 0)
+    {
+      gboolean disabled;
+
+      disabled = g_settings_get_boolean (settings, "disable-lock-screen");
+
+      self->lock_disabled = disabled;
+    }
+
+  if (key == NULL || g_strcmp0 (key, "disable-user-switching") == 0)
+    {
+      gboolean disabled;
+
+      disabled = g_settings_get_boolean (settings, "disable-user-switching");
+
+      self->user_switch_disabled = disabled;
+    }
+
+  g_signal_emit (self, prefs_signals[CHANGED], 0);
+}
+
+static void
+screensaver_changed_cb (GSettings   *settings,
+                        const gchar *key,
+                        GfPrefs     *self)
+{
+  gboolean enabled;
+
+  if (key == NULL || g_strcmp0 (key, "lock-enabled") == 0)
+    {
+      enabled = g_settings_get_boolean (settings, "lock-enabled");
+
+      self->lock_enabled = enabled;
+    }
+
+  if (key == NULL || g_strcmp0 (key, "lock-delay") == 0)
+    {
+      guint delay;
+
+      delay = g_settings_get_uint (settings, "lock-delay");
+
+      /* prevent overflow when converting to milliseconds */
+      if (delay > G_MAXUINT / 1000)
+        delay = G_MAXUINT / 1000;
+
+      self->lock_delay = delay * 1000;
+    }
+
+  if (key == NULL || g_strcmp0 (key, "user-switch-enabled") == 0)
+    {
+      enabled = g_settings_get_boolean (settings, "user-switch-enabled");
+
+      self->user_switch_enabled = enabled;
+    }
+
+  g_signal_emit (self, prefs_signals[CHANGED], 0);
+}
+
+static void
+gf_prefs_dispose (GObject *object)
+{
+  GfPrefs *self;
+
+  self = GF_PREFS (object);
+
+  g_clear_object (&self->lockdown);
+  g_clear_object (&self->screensaver);
+
+  G_OBJECT_CLASS (gf_prefs_parent_class)->dispose (object);
+}
+
+static void
+install_signals (void)
+{
+  prefs_signals[CHANGED] =
+    g_signal_new ("changed", GF_TYPE_PREFS, G_SIGNAL_RUN_LAST, 0,
+                  NULL, NULL, NULL, G_TYPE_NONE, 0);
+}
+
+static void
+gf_prefs_class_init (GfPrefsClass *self_class)
+{
+  GObjectClass *object_class;
+
+  object_class = G_OBJECT_CLASS (self_class);
+
+  object_class->dispose = gf_prefs_dispose;
+
+  install_signals ();
+}
+
+static void
+gf_prefs_init (GfPrefs *self)
+{
+  self->lockdown = g_settings_new ("org.gnome.desktop.lockdown");
+  self->screensaver = g_settings_new ("org.gnome.desktop.screensaver");
+
+  g_signal_connect (self->lockdown, "changed",
+                    G_CALLBACK (lockdown_changed_cb), self);
+
+  g_signal_connect (self->screensaver, "changed",
+                    G_CALLBACK (screensaver_changed_cb), self);
+
+  lockdown_changed_cb (self->lockdown, NULL, self);
+  screensaver_changed_cb (self->screensaver, NULL, self);
+}
+
+GfPrefs *
+gf_prefs_new (void)
+{
+  return g_object_new (GF_TYPE_PREFS, NULL);
+}
+
+gboolean
+gf_prefs_get_lock_disabled (GfPrefs *self)
+{
+  return self->lock_disabled;
+}
+
+gboolean
+gf_prefs_get_user_switch_disabled (GfPrefs *self)
+{
+  return self->user_switch_disabled;
+}
+
+gboolean
+gf_prefs_get_lock_enabled (GfPrefs *self)
+{
+  return self->lock_enabled;
+}
+
+guint
+gf_prefs_get_lock_delay (GfPrefs *self)
+{
+  return self->lock_delay;
+}
+
+gboolean
+gf_prefs_get_user_switch_enabled (GfPrefs *self)
+{
+  return self->user_switch_enabled;
+}
diff --git a/gnome-flashback/libscreensaver/gf-prefs.h b/gnome-flashback/libscreensaver/gf-prefs.h
new file mode 100644
index 0000000..d9f487f
--- /dev/null
+++ b/gnome-flashback/libscreensaver/gf-prefs.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2004-2006 William Jon McCann
+ * Copyright (C) 2019 Alberts Muktupāvels
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ *     Alberts Muktupāvels <alberts muktupavels gmail com>
+ *     William Jon McCann <mccann jhu edu>
+ */
+
+#ifndef GF_PREFS_H
+#define GF_PREFS_H
+
+#include <glib-object.h>
+
+G_BEGIN_DECLS
+
+#define GF_TYPE_PREFS (gf_prefs_get_type ())
+G_DECLARE_FINAL_TYPE (GfPrefs, gf_prefs, GF, PREFS, GObject)
+
+GfPrefs  *gf_prefs_new                      (void);
+
+gboolean  gf_prefs_get_lock_disabled        (GfPrefs *self);
+
+gboolean  gf_prefs_get_user_switch_disabled (GfPrefs *self);
+
+gboolean  gf_prefs_get_lock_enabled         (GfPrefs *self);
+
+guint     gf_prefs_get_lock_delay           (GfPrefs *self);
+
+gboolean  gf_prefs_get_user_switch_enabled  (GfPrefs *self);
+
+G_END_DECLS
+
+#endif