If gconf_entry_get_value() returns NULL, then it means the key was unset

2004-02-27  Jeffrey Stedfast  <fejj@ximian.com>

	* em-folder-view.c (emfv_setting_notify): If
	gconf_entry_get_value() returns NULL, then it means the key was
	unset or something. Don't use g_return_if_fail() for that.

	First of the lockdown fixes...

	* em-composer-prefs.c (em_composer_prefs_construct): Same as
	below.

	* em-mailer-prefs.c (em_mailer_prefs_construct): Respect
	locked-down keys by disabling their sensitivity to the user.
	(settings_changed): Don't re-enable check_incoming_imap if the key
	is locked.

svn path=/trunk/; revision=24911

4 files changed, 240 insertions, 79 deletions

diff --git a/mail/ChangeLog b/mail/ChangeLog
index b006299882..4e02f76391 100644
--- a/mail/ChangeLog
+++ b/mail/ChangeLog
@@ -1,3 +1,19 @@
+2004-02-27  Jeffrey Stedfast  <fejj@ximian.com>
+
+	* em-folder-view.c (emfv_setting_notify): If
+	gconf_entry_get_value() returns NULL, then it means the key was
+	unset or something. Don't use g_return_if_fail() for that.
+
+	First of the lockdown fixes...
+
+	* em-composer-prefs.c (em_composer_prefs_construct): Same as
+	below.
+
+	* em-mailer-prefs.c (em_mailer_prefs_construct): Respect
+	locked-down keys by disabling their sensitivity to the user.
+	(settings_changed): Don't re-enable check_incoming_imap if the key
+	is locked.
+
 2004-02-26  Rodney Dawes  <dobey@ximian.com>
 
 	* em-format-html-display.c (efhd_attachment_button): Create the
diff --git a/mail/em-composer-prefs.c b/mail/em-composer-prefs.c
index aaa3a623f9..e4b68b9b3d 100644
--- a/mail/em-composer-prefs.c
+++ b/mail/em-composer-prefs.c
@@ -329,7 +329,7 @@ sig_add_script_response (GtkWidget *widget, int button, EMComposerPrefs *prefs)
 				return;
 			}
 		}
-
+		
 		g_free(script);
 		dialog = gtk_message_dialog_new (GTK_WINDOW (prefs->sig_script_dialog),
 						 GTK_DIALOG_DESTROY_WITH_PARENT,
@@ -497,9 +497,9 @@ spell_set_ui (EMComposerPrefs *prefs)
 	gboolean go;
 	char **strv = NULL;
 	int i;
-
+	
 	prefs->spell_active = FALSE;
-
+	
 	/* setup the language list */
 	present = g_hash_table_new (g_str_hash, g_str_equal);
 	if (prefs->language_str && (strv = g_strsplit (prefs->language_str, " ", 0))) {
@@ -536,7 +536,7 @@ spell_get_language_str (EMComposerPrefs *prefs)
 	GtkTreeIter iter;
 	gboolean go;
 	char *rv;
-
+	
 	model = (GtkListStore *) gtk_tree_view_get_model (prefs->language);
 	for (go = gtk_tree_model_get_iter_first ((GtkTreeModel *) model, &iter);
 	     go;
@@ -595,7 +595,7 @@ spell_load_values (EMComposerPrefs *prefs)
 {
 	GConfValue *val;
 	char *def_lang;
-
+	
 	def_lang = g_strdup (e_iconv_locale_language ());
 	g_free (prefs->language_str);
 	prefs->language_str = g_strdup (def_lang);
@@ -673,7 +673,7 @@ spell_language_selection_changed (GtkTreeSelection *selection, EMComposerPrefs *
 	GtkTreeIter iter;
 	GtkTreeModel *model;
 	gboolean state = FALSE;
-
+	
 	if (gtk_tree_selection_get_selected (selection, &model, &iter)) {
 		gtk_tree_model_get ((GtkTreeModel *) model, &iter, 0, &state, -1);
 		gtk_button_set_label ((GtkButton *) prefs->spell_able_button, state ? _("Disable") : _("Enable"));
@@ -788,6 +788,22 @@ spell_setup_check_options (EMComposerPrefs *prefs)
  * End of Spell checking
  */
 
+
+static void
+toggle_button_init (GtkToggleButton *toggle, GConfClient *gconf, const char *key, int not, GCallback toggled, void *user_data)
+{
+	gboolean bool;
+	
+	bool = gconf_client_get_bool (gconf, key, NULL);
+	gtk_toggle_button_set_active (toggle, not ? !bool : bool);
+	
+	if (toggled)
+		g_signal_connect (toggle, "toggled", toggled, user_data);
+	
+	if (!gconf_client_key_is_writable (gconf, key, NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) toggle, FALSE);
+}
+
 static void
 em_composer_prefs_construct (EMComposerPrefs *prefs)
 {
@@ -796,7 +812,7 @@ em_composer_prefs_construct (EMComposerPrefs *prefs)
 	GladeXML *gui;
 	GtkListStore *model;
 	GtkTreeSelection *selection;
-	gboolean bool;
+	gboolean bool, locked;
 	int style;
 	char *buf;
 	
@@ -819,35 +835,37 @@ em_composer_prefs_construct (EMComposerPrefs *prefs)
 	
 	/* Default Behavior */
 	prefs->send_html = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkSendHTML"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/composer/send_html", NULL);
-	gtk_toggle_button_set_active (prefs->send_html, bool);
-	g_signal_connect (prefs->send_html, "toggled", G_CALLBACK (toggle_button_toggled), prefs);
+	toggle_button_init (prefs->send_html, prefs->gconf,
+			    "/apps/evolution/mail/composer/send_html",
+			    FALSE, G_CALLBACK (toggle_button_toggled), prefs);
 	
 	prefs->prompt_empty_subject = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkPromptEmptySubject"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/prompts/empty_subject", NULL);
-	gtk_toggle_button_set_active (prefs->prompt_empty_subject, bool);
-	g_signal_connect (prefs->prompt_empty_subject, "toggled", G_CALLBACK (toggle_button_toggled), prefs);
+	toggle_button_init (prefs->prompt_empty_subject, prefs->gconf,
+			    "/apps/evolution/mail/prompts/empty_subject",
+			    FALSE, G_CALLBACK (toggle_button_toggled), prefs);
 	
 	prefs->prompt_bcc_only = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkPromptBccOnly"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/prompts/only_bcc", NULL);
-	gtk_toggle_button_set_active (prefs->prompt_bcc_only, bool);
-	g_signal_connect (prefs->prompt_bcc_only, "toggled", G_CALLBACK (toggle_button_toggled), prefs);
+	toggle_button_init (prefs->prompt_bcc_only, prefs->gconf,
+			    "/apps/evolution/mail/prompts/only_bcc",
+			    FALSE, G_CALLBACK (toggle_button_toggled), prefs);
 	
 	prefs->auto_smileys = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkAutoSmileys"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/composer/magic_smileys", NULL);
-	gtk_toggle_button_set_active (prefs->auto_smileys, bool);
-	g_signal_connect (prefs->auto_smileys, "toggled", G_CALLBACK (toggle_button_toggled), prefs);
-
+	toggle_button_init (prefs->auto_smileys, prefs->gconf,
+			    "/apps/evolution/mail/composer/magic_smileys",
+			    FALSE, G_CALLBACK (toggle_button_toggled), prefs);
+	
 	prefs->spell_check = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkEnableSpellChecking"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/composer/inline_spelling", NULL);
-	gtk_toggle_button_set_active (prefs->spell_check, bool);
-	g_signal_connect (prefs->spell_check, "toggled", G_CALLBACK (toggle_button_toggled), prefs);
-
+	toggle_button_init (prefs->auto_smileys, prefs->gconf,
+			    "/apps/evolution/mail/composer/inline_spelling",
+			    FALSE, G_CALLBACK (toggle_button_toggled), prefs);
+	
 	prefs->charset = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuCharset"));
 	buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/composer/charset", NULL);
 	menu = e_charset_picker_new (buf && *buf ? buf : e_iconv_locale_charset ());
 	gtk_option_menu_set_menu (prefs->charset, GTK_WIDGET (menu));
 	option_menu_connect (prefs->charset, prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/composer/charset", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->charset, FALSE);
 	g_free (buf);
 	
 	/* Spell Checking: GNOME Spell part */
@@ -883,6 +901,8 @@ em_composer_prefs_construct (EMComposerPrefs *prefs)
 	gtk_container_foreach (GTK_CONTAINER (gtk_option_menu_get_menu (prefs->forward_style)),
 			       attach_style_info, &style);
 	option_menu_connect (prefs->forward_style, prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/format/forward_style", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->forward_style, FALSE);
 	
 	prefs->reply_style = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuReplyStyle"));
 	style = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/format/reply_style", NULL);
@@ -891,6 +911,8 @@ em_composer_prefs_construct (EMComposerPrefs *prefs)
 	gtk_container_foreach (GTK_CONTAINER (gtk_option_menu_get_menu (prefs->reply_style)),
 			       attach_style_info, &style);
 	option_menu_connect (prefs->reply_style, prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/format/reply_style", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->reply_style, FALSE);
 	
 	/* Signatures */
 	dialog = (GtkDialog *) gtk_dialog_new ();
diff --git a/mail/em-folder-view.c b/mail/em-folder-view.c
index a6d45dec63..d7da84caff 100644
--- a/mail/em-folder-view.c
+++ b/mail/em-folder-view.c
@@ -2014,27 +2014,30 @@ static GHashTable *emfv_setting_key;
 static void
 emfv_setting_notify(GConfClient *gconf, guint cnxn_id, GConfEntry *entry, EMFolderView *emfv)
 {
+	GConfValue *value;
 	char *tkey;
 
 	g_return_if_fail (gconf_entry_get_key (entry) != NULL);
-	g_return_if_fail (gconf_entry_get_value (entry) != NULL);
+	
+	if (!(value = gconf_entry_get_value (entry)))
+		return;
 	
 	tkey = strrchr(entry->key, '/');
 	g_return_if_fail (tkey != NULL);
 	
 	switch(GPOINTER_TO_INT(g_hash_table_lookup(emfv_setting_key, tkey+1))) {
 	case EMFV_ANIMATE_IMAGES:
-		em_format_html_display_set_animate(emfv->preview, gconf_value_get_bool(gconf_entry_get_value(entry)));
+		em_format_html_display_set_animate(emfv->preview, gconf_value_get_bool (value));
 		break;
 	case EMFV_CHARSET:
-		em_format_set_default_charset((EMFormat *)emfv->preview, gconf_value_get_string(gconf_entry_get_value(entry)));
+		em_format_set_default_charset((EMFormat *)emfv->preview, gconf_value_get_string (value));
 		break;
 	case EMFV_CITATION_COLOUR: {
 		const char *s;
 		GdkColor colour;
 		guint32 rgb;
 
-		s = gconf_value_get_string(gconf_entry_get_value(entry));
+		s = gconf_value_get_string (value);
 		gdk_color_parse(s?s:"#737373", &colour);
 		rgb = ((colour.red & 0xff00) << 8) | (colour.green & 0xff00) | ((colour.blue & 0xff00) >> 8);
 		em_format_html_set_mark_citations((EMFormatHTML *)emfv->preview,
@@ -2042,15 +2045,15 @@ emfv_setting_notify(GConfClient *gconf, guint cnxn_id, GConfEntry *entry, EMFold
 		break; }
 	case EMFV_CITATION_MARK:
 		em_format_html_set_mark_citations((EMFormatHTML *)emfv->preview,
-						  gconf_value_get_bool(gconf_entry_get_value(entry)),
+						  gconf_value_get_bool (value),
 						  ((EMFormatHTML *)emfv->preview)->citation_colour);
 		break;
 	case EMFV_CARET_MODE:
-		em_format_html_display_set_caret_mode(emfv->preview, gconf_value_get_bool(gconf_entry_get_value(entry)));
+		em_format_html_display_set_caret_mode(emfv->preview, gconf_value_get_bool (value));
 		break;
 	case EMFV_MESSAGE_STYLE:
 		if (EM_FOLDER_VIEW_GET_CLASS (emfv)->update_message_style) {
-			int style = gconf_value_get_int(gconf_entry_get_value(entry));
+			int style = gconf_value_get_int (value);
 			
 			if (style < EM_FORMAT_NORMAL || style > EM_FORMAT_SOURCE)
 				style = EM_FORMAT_NORMAL;
@@ -2058,19 +2061,19 @@ emfv_setting_notify(GConfClient *gconf, guint cnxn_id, GConfEntry *entry, EMFold
 		}
 		break;
 	case EMFV_MARK_SEEN:
-		emfv->mark_seen = gconf_value_get_bool(gconf_entry_get_value(entry));
+		emfv->mark_seen = gconf_value_get_bool (value);
 		break;
 	case EMFV_MARK_SEEN_TIMEOUT:
-		emfv->mark_seen_timeout = gconf_value_get_int(gconf_entry_get_value(entry));
+		emfv->mark_seen_timeout = gconf_value_get_int (value);
 		break;
 	case EMFV_LOAD_HTTP: {
-		int style = gconf_value_get_int(gconf_entry_get_value(entry));
+		int style = gconf_value_get_int (value);
 
 		/* FIXME: this doesn't handle the 'sometimes' case, only the always case */
 		em_format_html_set_load_http((EMFormatHTML *)emfv->preview, style == 2);
 		break; }
 	case EMFV_XMAILER_MASK:
-		em_format_html_set_xmailer_mask((EMFormatHTML *)emfv->preview, gconf_value_get_int(gconf_entry_get_value(entry)));
+		em_format_html_set_xmailer_mask((EMFormatHTML *)emfv->preview, gconf_value_get_int (value));
 		break;
 	case EMFV_HEADERS: {
 		GSList *header_config_list, *p;
diff --git a/mail/em-mailer-prefs.c b/mail/em-mailer-prefs.c
index 946baec956..ca13a8da77 100644
--- a/mail/em-mailer-prefs.c
+++ b/mail/em-mailer-prefs.c
@@ -159,8 +159,12 @@ static void
 settings_changed (GtkWidget *widget, gpointer user_data)
 {
 	EMMailerPrefs *prefs = (EMMailerPrefs *) user_data;
+	gboolean check_incoming, locked = FALSE;
 	
-	gtk_widget_set_sensitive (GTK_WIDGET (prefs->check_incoming_imap), gtk_toggle_button_get_active (prefs->check_incoming));
+	if ((check_incoming = gtk_toggle_button_get_active (prefs->check_incoming)))
+		locked = gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/junk/sa/check_incoming_imap", NULL);
+	
+	gtk_widget_set_sensitive (GTK_WIDGET (prefs->check_incoming_imap), check_incoming && !locked);
 	if (prefs->control)
 		evolution_config_control_changed (prefs->control);
 }
@@ -388,6 +392,80 @@ emmp_header_entry_changed (GtkWidget *entry, gpointer user_data)
 }
 
 static void
+entry_init (GtkEntry *entry, GConfClient *gconf, const char *key, GCallback changed, void *user_data)
+{
+	char *string;
+	
+	string = gconf_client_get_string (gconf, key, NULL);
+	gtk_entry_set_text (entry, string ? string : "");
+	g_free (string);
+	
+	if (changed)
+		g_signal_connect (entry, "changed", changed, user_data);
+	
+	if (!gconf_client_key_is_writable (gconf, key, NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) entry, FALSE);
+}
+
+static void
+spin_button_init (GtkSpinButton *spin, GConfClient *gconf, const char *key, float div, GCallback value_changed, void *user_data)
+{
+	GError *err = NULL;
+	double min, max;
+	char *mkey, *p;
+	int val;
+	
+	gtk_spin_button_get_range (spin, &min, &max);
+	
+	mkey = g_alloca (strlen (key) + 5);
+	p = g_stpcpy (mkey, key);
+	*p++ = '_';
+	
+	/* see if the admin locked down the min value */
+	strcpy (p, "min");
+	val = gconf_client_get_int (gconf, mkey, &err);
+	if (err == NULL)
+		g_clear_error (&err);
+	else
+		min = (1.0 * val) / div;
+	
+	/* see if the admin locked down the max value */
+	strcpy (p, "max");
+	val = gconf_client_get_int (gconf, mkey, &err);
+	if (err == NULL)
+		g_clear_error (&err);
+	else
+		max = (1.0 * val) / div;
+	
+	gtk_spin_button_set_range (spin, min, max);
+	
+	/* get the value */
+	val = gconf_client_get_int (gconf, key, NULL);
+	gtk_spin_button_set_value (spin, (1.0 * val) / div);
+	
+	if (value_changed)
+		g_signal_connect (spin, "value-changed", value_changed, user_data);
+	
+	if (!gconf_client_key_is_writable (gconf, key, NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) spin, FALSE);
+}
+
+static void
+toggle_button_init (GtkToggleButton *toggle, GConfClient *gconf, const char *key, int not, GCallback toggled, void *user_data)
+{
+	gboolean bool;
+	
+	bool = gconf_client_get_bool (gconf, key, NULL);
+	gtk_toggle_button_set_active (toggle, not ? !bool : bool);
+	
+	if (toggled)
+		g_signal_connect (toggle, "toggled", toggled, user_data);
+	
+	if (!gconf_client_key_is_writable (gconf, key, NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) toggle, FALSE);
+}
+
+static void
 em_mailer_prefs_construct (EMMailerPrefs *prefs)
 {
 	GSList *list, *header_config_list, *header_add_list, *p;
@@ -398,7 +476,7 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 	GtkTreeIter iter;
 	char *font, *buf;
 	GladeXML *gui;
-	gboolean bool, check_incoming;
+	gboolean locked, check_incoming;
 	int val, i;
 	
 	gui = glade_xml_new (EVOLUTION_GLADEDIR "/mail-config.glade", "preferences_tab", NULL);
@@ -417,63 +495,77 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 	
 	/* Message Display */
 	prefs->timeout_toggle = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkMarkTimeout"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/display/mark_seen", NULL);
-	gtk_toggle_button_set_active (prefs->timeout_toggle, bool);
-	g_signal_connect (prefs->timeout_toggle, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->timeout_toggle, prefs->gconf,
+			    "/apps/evolution/mail/display/mark_seen",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 	
 	prefs->timeout = GTK_SPIN_BUTTON (glade_xml_get_widget (gui, "spinMarkTimeout"));
-	val = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/display/mark_seen_timeout", NULL);
-	gtk_spin_button_set_value (prefs->timeout, (1.0 * val) / 1000.0);
-	g_signal_connect (prefs->timeout, "value-changed", G_CALLBACK (settings_changed), prefs);
+	spin_button_init (prefs->timeout, prefs->gconf,
+			  "/apps/evolution/mail/display/mark_seen_timeout",
+			  1000.0, G_CALLBACK (settings_changed), prefs);
 	
 	prefs->charset = GTK_OPTION_MENU (glade_xml_get_widget (gui, "omenuCharset"));
 	buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/display/charset", NULL);
 	menu = e_charset_picker_new (buf && *buf ? buf : e_iconv_locale_charset ());
 	gtk_option_menu_set_menu (prefs->charset, GTK_WIDGET (menu));
 	option_menu_connect (prefs->charset, prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/charset", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->charset, FALSE);
 	g_free (buf);
 	
 	prefs->citation_highlight = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkHighlightCitations"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/display/mark_citations", NULL);
-	gtk_toggle_button_set_active (prefs->citation_highlight, bool);
-	g_signal_connect (prefs->citation_highlight, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->citation_highlight, prefs->gconf,
+			    "/apps/evolution/mail/display/mark_citations",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 	
 	prefs->citation_color = GNOME_COLOR_PICKER (glade_xml_get_widget (gui, "colorpickerHighlightCitations"));
 	buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/display/citation_colour", NULL);
 	colorpicker_set_color (prefs->citation_color, buf ? buf : "#737373");
 	g_signal_connect (prefs->citation_color, "color-set", G_CALLBACK (color_set), prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/citation_colour", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->citation_color, FALSE);
 	g_free (buf);
 	
 	/* Deleting Mail */
 	prefs->empty_trash = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkEmptyTrashOnExit"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/trash/empty_on_exit", NULL);
-	gtk_toggle_button_set_active (prefs->empty_trash, bool);
-	g_signal_connect (prefs->empty_trash, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->empty_trash, prefs->gconf,
+			    "/apps/evolution/mail/trash/empty_on_exit",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 	
 	prefs->confirm_expunge = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkConfirmExpunge"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/prompts/expunge", NULL);
-	gtk_toggle_button_set_active (prefs->confirm_expunge, bool);
-	g_signal_connect (prefs->confirm_expunge, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->empty_trash, prefs->gconf,
+			    "/apps/evolution/mail/prompts/expunge",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 	
 	/* New Mail Notification */
+	locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/notify/type", NULL);
+	
 	val = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/notify/type", NULL);
 	prefs->notify_not = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radNotifyNot"));
 	gtk_toggle_button_set_active (prefs->notify_not, val == MAIL_CONFIG_NOTIFY_NOT);
 	g_signal_connect (prefs->notify_not, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->notify_not, FALSE);
 	
 	prefs->notify_beep = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radNotifyBeep"));
 	gtk_toggle_button_set_active (prefs->notify_beep, val == MAIL_CONFIG_NOTIFY_BEEP);
 	g_signal_connect (prefs->notify_beep, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->notify_beep, FALSE);
 	
 	prefs->notify_play_sound = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radNotifyPlaySound"));
 	gtk_toggle_button_set_active (prefs->notify_play_sound, val == MAIL_CONFIG_NOTIFY_PLAY_SOUND);
 	g_signal_connect (prefs->notify_play_sound, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->notify_play_sound, FALSE);
 	
 	prefs->notify_sound_file = GNOME_FILE_ENTRY (glade_xml_get_widget (gui, "fileNotifyPlaySound"));
 	buf = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/notify/sound", NULL);
 	gtk_entry_set_text (GTK_ENTRY (gnome_file_entry_gtk_entry (prefs->notify_sound_file)), buf ? buf : "");
 	g_signal_connect (gnome_file_entry_gtk_entry (prefs->notify_sound_file), "changed",
 			  G_CALLBACK (settings_changed), prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/notify/sound", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->notify_sound_file, FALSE);
 	g_free (buf);
 	
 	/* Mail  Fonts */
@@ -481,45 +573,58 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 	prefs->font_fixed = GNOME_FONT_PICKER (glade_xml_get_widget (gui, "radFontFixed"));
 	gnome_font_picker_set_font_name (prefs->font_fixed, font);
 	g_signal_connect (prefs->font_fixed, "font-set", G_CALLBACK (font_changed), prefs);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/fonts/monospace", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->font_fixed, FALSE);
 	
 	font = gconf_client_get_string (prefs->gconf, "/apps/evolution/mail/display/fonts/variable", NULL);
 	prefs->font_variable = GNOME_FONT_PICKER (glade_xml_get_widget (gui, "radFontVariable"));
 	gnome_font_picker_set_font_name (prefs->font_variable, font);
 	g_signal_connect (prefs->font_variable, "font-set", G_CALLBACK (font_changed), prefs);
-
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/display/fonts/use_custom", NULL);
+	if (!gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/fonts/variable", NULL))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->font_variable, FALSE);
+	
 	prefs->font_share = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radFontUseSame"));
-	gtk_toggle_button_set_active (prefs->font_share, !bool);
-	g_signal_connect (prefs->font_share, "toggled", G_CALLBACK (font_share_changed), prefs);
+	toggle_button_init (prefs->font_share, prefs->gconf,
+			    "/apps/evolution/mail/display/fonts/use_custom",
+			    TRUE, G_CALLBACK (font_share_changed), prefs);
 	font_share_changed (GTK_WIDGET (prefs->font_share), prefs);
 	
 	/* HTML Mail tab */
 	
 	/* Loading Images */
+	locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/load_http_images", NULL);
 	
 	val = gconf_client_get_int (prefs->gconf, "/apps/evolution/mail/display/load_http_images", NULL);
 	prefs->images_never = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesNever"));
 	gtk_toggle_button_set_active (prefs->images_never, val == MAIL_CONFIG_HTTP_NEVER);
 	g_signal_connect (prefs->images_never, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->images_never, FALSE);
 	
 	prefs->images_sometimes = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesSometimes"));
 	gtk_toggle_button_set_active (prefs->images_sometimes, val == MAIL_CONFIG_HTTP_SOMETIMES);
 	g_signal_connect (prefs->images_sometimes, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->images_sometimes, FALSE);
 	
 	prefs->images_always = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "radImagesAlways"));
 	gtk_toggle_button_set_active (prefs->images_always, val == MAIL_CONFIG_HTTP_ALWAYS);
 	g_signal_connect (prefs->images_always, "toggled", G_CALLBACK (settings_changed), prefs);
+	if (locked)
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->images_always, FALSE);
 	
 	prefs->show_animated = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkShowAnimatedImages"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/display/animate_images", NULL);
-	gtk_toggle_button_set_active (prefs->show_animated, bool);
-	g_signal_connect (prefs->show_animated, "toggled", G_CALLBACK (settings_changed), prefs);
-
+	toggle_button_init (prefs->show_animated, prefs->gconf,
+			    "/apps/evolution/mail/display/animate_images",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
+	
 	prefs->prompt_unwanted_html = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkPromptWantHTML"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/prompts/unwanted_html", NULL);
-	gtk_toggle_button_set_active (prefs->prompt_unwanted_html, bool);
-	g_signal_connect (prefs->prompt_unwanted_html, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->prompt_unwanted_html, prefs->gconf,
+			    "/apps/evolution/mail/prompts/unwanted_html",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 	
+	/* Labels... */
+	locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/labels", NULL);
 	i = 0;
 	list = mail_config_get_labels ();
 	while (list != NULL && i < 5) {
@@ -530,10 +635,12 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 		
 		widget_name = g_strdup_printf ("txtLabel%d", i);
 		prefs->labels[i].name = GTK_ENTRY (glade_xml_get_widget (gui, widget_name));
+		gtk_widget_sensitive ((GtkWidget *) prefs->labels[i].name, !locked);
 		g_free (widget_name);
 		
 		widget_name = g_strdup_printf ("colorLabel%d", i);
 		prefs->labels[i].color = GNOME_COLOR_PICKER (glade_xml_get_widget (gui, widget_name));
+		gtk_widget_sensitive ((GtkWidget *) prefs->labels[i].color, !locked);
 		g_free (widget_name);
 		
 		gtk_entry_set_text (prefs->labels[i].name, label->name);
@@ -547,13 +654,24 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 	}
 	
 	prefs->restore_labels = GTK_BUTTON (glade_xml_get_widget (gui, "cmdRestoreLabels"));
+	gtk_widget_sensitive ((GtkWidget *) prefs->restore_labels, !locked);
 	g_signal_connect (prefs->restore_labels, "clicked", G_CALLBACK (restore_labels_clicked), prefs);
 	
 	/* headers */
+	locked = !gconf_client_key_is_writable (prefs->gconf, "/apps/evolution/mail/display/headers", NULL);
+	
 	prefs->add_header = GTK_BUTTON (glade_xml_get_widget (gui, "cmdHeadersAdd"));
+	gtk_widget_set_sensitive ((GtkWidget *) prefs->add_header, !locked);
+	
 	prefs->remove_header = GTK_BUTTON (glade_xml_get_widget (gui, "cmdHeadersRemove"));
+	gtk_widget_set_sensitive ((GtkWidget *) prefs->remove_header, !locked);
+	
 	prefs->entry_header = GTK_ENTRY (glade_xml_get_widget (gui, "txtHeaders"));
+	gtk_widget_set_sensitive ((GtkWidget *) prefs->entry_header, !locked);
+	
 	prefs->header_list = GTK_TREE_VIEW (glade_xml_get_widget (gui, "treeHeaders"));
+	gtk_widget_set_sensitive ((GtkWidget *) prefs->header_list, !locked);
+	
 	selection = gtk_tree_view_get_selection (prefs->header_list);
 	g_signal_connect (selection, "changed", G_CALLBACK (emmp_header_list_row_selected), prefs);
 	g_signal_connect (prefs->entry_header, "changed", G_CALLBACK (emmp_header_entry_changed), prefs);
@@ -650,25 +768,27 @@ em_mailer_prefs_construct (EMMailerPrefs *prefs)
 	
 	/* Junk prefs */
 	prefs->check_incoming = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkCheckIncomingMail"));
-	check_incoming = bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/junk/check_incoming", NULL);
-	gtk_toggle_button_set_active (prefs->check_incoming, bool);
-	g_signal_connect (prefs->check_incoming, "toggled", G_CALLBACK (settings_changed), prefs);
-
+	toggle_button_init (prefs->check_incoming, prefs->gconf,
+			    "/apps/evolution/mail/junk/sa/check_incoming",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
+	
+	check_incoming = gtk_toggle_button_get_active (prefs->check_incoming);
 	prefs->check_incoming_imap = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkDoNotCheckIMAP"));
-	gtk_widget_set_sensitive (GTK_WIDGET (prefs->check_incoming_imap), check_incoming);
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/junk/check_incoming_imap", NULL);
-	gtk_toggle_button_set_active (prefs->check_incoming_imap, !bool);
-	g_signal_connect (prefs->check_incoming_imap, "toggled", G_CALLBACK (settings_changed), prefs);
-
+	toggle_button_init (prefs->check_incoming_imap, prefs->gconf,
+			    "/apps/evolution/mail/junk/sa/check_incoming_imap",
+			    TRUE, G_CALLBACK (settings_changed), prefs);
+	if (!gtk_toggle_button_get_active (prefs->check_incoming))
+		gtk_widget_set_sensitive ((GtkWidget *) prefs->check_incoming_imap, FALSE);
+	
 	prefs->sa_local_tests_only = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkSALocalTestsOnly"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/junk/sa/local_only", NULL);
-	gtk_toggle_button_set_active (prefs->sa_local_tests_only, bool);
-	g_signal_connect (prefs->sa_local_tests_only, "toggled", G_CALLBACK (settings_changed), prefs);
-
+	toggle_button_init (prefs->sa_local_tests_only, prefs->gconf,
+			    "/apps/evolution/mail/junk/sa/local_only",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
+	
 	prefs->sa_use_daemon = GTK_TOGGLE_BUTTON (glade_xml_get_widget (gui, "chkSAUseDaemon"));
-	bool = gconf_client_get_bool (prefs->gconf, "/apps/evolution/mail/junk/sa/use_daemon", NULL);
-	gtk_toggle_button_set_active (prefs->sa_use_daemon, bool);
-	g_signal_connect (prefs->sa_use_daemon, "toggled", G_CALLBACK (settings_changed), prefs);
+	toggle_button_init (prefs->sa_use_daemon, prefs->gconf,
+			    "/apps/evolution/mail/junk/sa/use_daemon",
+			    FALSE, G_CALLBACK (settings_changed), prefs);
 }
 
 GtkWidget *