Add extensions to configure calender widgets.

Make ECalendarItem, ECalendarView, ECalModel, EDateEdit, EMeetingStore,
and EMeetingTimeSelector extensible and register extensions to
automatically bind every instance to the appropriate EShellSettings.

Conflicts:

	calendar/gui/gnome-cal.c
	modules/calendar/e-cal-shell-content.c

25 files changed, 51 insertions, 389 deletions

diff --git a/calendar/gui/dialogs/comp-editor-util.c b/calendar/gui/dialogs/comp-editor-util.c
index 271ac5a8cc..cd16b46974 100644
--- a/calendar/gui/dialogs/comp-editor-util.c
+++ b/calendar/gui/dialogs/comp-editor-util.c
@@ -209,7 +209,6 @@ comp_editor_date_label (CompEditorPageDates *dates, GtkWidget *label)
 
 /**
  * comp_editor_new_date_edit:
- * @shell_settings: an #EShellSettings
  * @show_date: Whether to show a date picker in the widget.
  * @show_time: Whether to show a time picker in the widget.
  * @make_time_insensitive: Whether the time field is made insensitive rather
@@ -221,15 +220,12 @@ comp_editor_date_label (CompEditorPageDates *dates, GtkWidget *label)
  * Return value: A newly-created #EDateEdit widget.
  **/
 GtkWidget *
-comp_editor_new_date_edit (EShellSettings *shell_settings,
-                           gboolean show_date,
+comp_editor_new_date_edit (gboolean show_date,
                            gboolean show_time,
                            gboolean make_time_insensitive)
 {
 	EDateEdit *dedit;
 
-	g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);
-
 	dedit = E_DATE_EDIT (e_date_edit_new ());
 
 	e_date_edit_set_show_date (dedit, show_date);
@@ -240,29 +236,9 @@ comp_editor_new_date_edit (EShellSettings *shell_settings,
 	e_date_edit_set_make_time_insensitive (dedit, FALSE);
 #endif
 
-	comp_editor_bind_date_edit_settings (GTK_WIDGET (dedit), shell_settings);
-
 	return GTK_WIDGET (dedit);
 }
 
-void
-comp_editor_bind_date_edit_settings (GtkWidget *dateedit, EShellSettings *shell_settings)
-{
-	g_return_if_fail (dateedit != NULL);
-	g_return_if_fail (E_IS_DATE_EDIT (dateedit));
-
-	if (!shell_settings)
-		shell_settings = e_shell_get_shell_settings (e_shell_get_default ());
-
-	e_binding_new (
-		shell_settings, "cal-show-week-numbers",
-		dateedit, "show-week-numbers");
-
-	e_binding_new (
-		shell_settings, "cal-week-start-day",
-		dateedit, "week-start-day");
-}
-
 /* Returns the current time, for EDateEdit widgets and ECalendar items in the
    dialogs.
    FIXME: Should probably use the timezone from somewhere in the component
diff --git a/calendar/gui/dialogs/comp-editor-util.h b/calendar/gui/dialogs/comp-editor-util.h
index 78a8bab33f..6eeb8c5410 100644
--- a/calendar/gui/dialogs/comp-editor-util.h
+++ b/calendar/gui/dialogs/comp-editor-util.h
@@ -26,7 +26,6 @@
 #define _COMP_EDITOR_UTIL_H_
 
 #include <gtk/gtk.h>
-#include <shell/e-shell-settings.h>
 #include "comp-editor-page.h"
 #include "../e-meeting-attendee.h"
 
@@ -35,13 +34,10 @@ void comp_editor_free_dates (CompEditorPageDates *dates);
 
 void comp_editor_date_label (CompEditorPageDates *dates, GtkWidget *label);
 
-GtkWidget *	comp_editor_new_date_edit	(EShellSettings *shell_settings,
-						 gboolean show_date,
+GtkWidget *	comp_editor_new_date_edit	(gboolean show_date,
 						 gboolean show_time,
 						 gboolean make_time_insensitive);
 
-void comp_editor_bind_date_edit_settings (GtkWidget *dateedit, EShellSettings *shell_settings);
-
 struct tm comp_editor_get_current_time (GtkObject *object, gpointer data);
 
 gchar *comp_editor_strip_categories (const gchar *categories);
diff --git a/calendar/gui/dialogs/event-editor.c b/calendar/gui/dialogs/event-editor.c
index 23256adff0..1a5f6d67fd 100644
--- a/calendar/gui/dialogs/event-editor.c
+++ b/calendar/gui/dialogs/event-editor.c
@@ -363,25 +363,12 @@ static void
 event_editor_constructed (GObject *object)
 {
 	EventEditorPrivate *priv;
-	EShellSettings *shell_settings;
-	EShell *shell;
 
 	priv = EVENT_EDITOR_GET_PRIVATE (object);
 
-	shell = comp_editor_get_shell (COMP_EDITOR (object));
-	shell_settings = e_shell_get_shell_settings (shell);
-
 	e_binding_new (
 		object, "client",
 		priv->model, "client");
-
-	e_binding_new (
-		shell_settings, "cal-free-busy-template",
-		priv->model, "free-busy-template");
-
-	e_binding_new (
-		shell_settings, "cal-timezone",
-		priv->model, "timezone");
 }
 
 static void
diff --git a/calendar/gui/dialogs/event-page.c b/calendar/gui/dialogs/event-page.c
index 7d79a2bfb7..a74cb64991 100644
--- a/calendar/gui/dialogs/event-page.c
+++ b/calendar/gui/dialogs/event-page.c
@@ -2219,7 +2219,6 @@ get_widgets (EventPage *epage)
 
 	/* Glade's visibility flag doesn't seem to work for custom widgets */
 	priv->start_time = GW ("start-time");
-	comp_editor_bind_date_edit_settings (priv->start_time, NULL);
 	gtk_widget_show (priv->start_time);
 
 	priv->time_hour = GW ("time-hour");
@@ -2228,7 +2227,6 @@ get_widgets (EventPage *epage)
 	priv->end_time_combo = GW ("end-time-combobox");
 
 	priv->end_time = GW ("end-time");
-	comp_editor_bind_date_edit_settings (priv->end_time, NULL);
 	gtk_widget_show_all (priv->time_hour);
 	gtk_widget_hide (priv->end_time);
 
diff --git a/calendar/gui/dialogs/memo-page.c b/calendar/gui/dialogs/memo-page.c
index f5c6a26400..269caba5d6 100644
--- a/calendar/gui/dialogs/memo-page.c
+++ b/calendar/gui/dialogs/memo-page.c
@@ -813,7 +813,6 @@ get_widgets (MemoPage *mpage)
 #undef GW
 
 	e_util_set_source_combo_box_list (priv->source_selector, "/apps/evolution/memos/sources");
-	comp_editor_bind_date_edit_settings (priv->start_date, NULL);
 
 	completion = e_category_completion_new ();
 	gtk_entry_set_completion (GTK_ENTRY (priv->categories), completion);
diff --git a/calendar/gui/dialogs/recurrence-page.c b/calendar/gui/dialogs/recurrence-page.c
index 4d3e0af1f0..578f98929c 100644
--- a/calendar/gui/dialogs/recurrence-page.c
+++ b/calendar/gui/dialogs/recurrence-page.c
@@ -1340,8 +1340,6 @@ static void
 make_ending_until_special (RecurrencePage *rpage)
 {
 	RecurrencePagePrivate *priv = rpage->priv;
-	EShell *shell;
-	EShellSettings *shell_settings;
 	CompEditor *editor;
 	CompEditorFlags flags;
 	EDateEdit *de;
@@ -1353,13 +1351,9 @@ make_ending_until_special (RecurrencePage *rpage)
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (rpage));
 	flags = comp_editor_get_flags (editor);
 
-	shell = comp_editor_get_shell (editor);
-	shell_settings = e_shell_get_shell_settings (shell);
-
 	/* Create the widget */
 
-	priv->ending_date_edit = comp_editor_new_date_edit (
-		shell_settings, TRUE, FALSE, FALSE);
+	priv->ending_date_edit = comp_editor_new_date_edit (TRUE, FALSE, FALSE);
 	de = E_DATE_EDIT (priv->ending_date_edit);
 
 	gtk_container_add (GTK_CONTAINER (priv->ending_special),
@@ -2088,14 +2082,10 @@ create_exception_dialog (RecurrencePage *rpage, const gchar *title, GtkWidget **
 	RecurrencePagePrivate *priv;
 	GtkWidget *dialog, *toplevel;
 	CompEditor *editor;
-	EShell *shell;
-	EShellSettings *shell_settings;
 
 	priv = rpage->priv;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (rpage));
-	shell = comp_editor_get_shell (editor);
-	shell_settings = e_shell_get_shell_settings (shell);
 
 	toplevel = gtk_widget_get_toplevel (priv->main);
 	dialog = gtk_dialog_new_with_buttons (title, GTK_WINDOW (toplevel),
@@ -2104,7 +2094,7 @@ create_exception_dialog (RecurrencePage *rpage, const gchar *title, GtkWidget **
 					      GTK_STOCK_OK, GTK_RESPONSE_ACCEPT,
 					      NULL);
 
-	*date_edit = comp_editor_new_date_edit (shell_settings, TRUE, FALSE, TRUE);
+	*date_edit = comp_editor_new_date_edit (TRUE, FALSE, TRUE);
 	gtk_widget_show (*date_edit);
 	gtk_box_pack_start (GTK_BOX (GTK_DIALOG (dialog)->vbox), *date_edit, FALSE, TRUE, 6);
 
@@ -2260,8 +2250,6 @@ static void
 init_widgets (RecurrencePage *rpage)
 {
 	RecurrencePagePrivate *priv;
-	EShell *shell;
-	EShellSettings *shell_settings;
 	CompEditor *editor;
 	ECalendar *ecal;
 	GtkAdjustment *adj;
@@ -2271,22 +2259,12 @@ init_widgets (RecurrencePage *rpage)
 	priv = rpage->priv;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (rpage));
-	shell = comp_editor_get_shell (editor);
-	shell_settings = e_shell_get_shell_settings (shell);
 
 	/* Recurrence preview */
 
 	priv->preview_calendar = e_calendar_new ();
 	ecal = E_CALENDAR (priv->preview_calendar);
 
-	e_binding_new (
-		shell_settings, "cal-show-week-numbers",
-		ecal->calitem, "show-week-numbers");
-
-	e_binding_new (
-		shell_settings, "cal-week-start-day",
-		ecal->calitem, "week-start-day");
-
 	g_signal_connect((ecal->calitem), "date_range_changed",
 			    G_CALLBACK (preview_date_range_changed_cb),
 			    rpage);
@@ -2423,12 +2401,6 @@ GtkWidget *make_exdate_date_edit (void);
 GtkWidget *
 make_exdate_date_edit (void)
 {
-	EShell *shell;
-	EShellSettings *shell_settings;
-
-	shell = e_shell_get_default ();
-	shell_settings = e_shell_get_shell_settings (shell);
-
-	return comp_editor_new_date_edit (shell_settings, TRUE, TRUE, FALSE);
+	return comp_editor_new_date_edit (TRUE, TRUE, FALSE);
 }
 
diff --git a/calendar/gui/dialogs/schedule-page.c b/calendar/gui/dialogs/schedule-page.c
index 32b6dffab8..2e13cba1b9 100644
--- a/calendar/gui/dialogs/schedule-page.c
+++ b/calendar/gui/dialogs/schedule-page.c
@@ -380,13 +380,9 @@ SchedulePage *
 schedule_page_construct (SchedulePage *spage, EMeetingStore *ems)
 {
 	SchedulePagePrivate *priv = spage->priv;
-	EShellSettings *shell_settings;
-	EShell *shell;
 	CompEditor *editor;
 
 	editor = comp_editor_page_get_editor (COMP_EDITOR_PAGE (spage));
-	shell = comp_editor_get_shell (editor);
-	shell_settings = e_shell_get_shell_settings (shell);
 
 	priv->builder = gtk_builder_new ();
 	e_load_ui_builder_definition (priv->builder, "schedule-page.ui");
@@ -412,18 +408,6 @@ schedule_page_construct (SchedulePage *spage, EMeetingStore *ems)
 	gtk_widget_show (GTK_WIDGET (priv->sel));
 	gtk_box_pack_start (GTK_BOX (priv->main), GTK_WIDGET (priv->sel), TRUE, TRUE, 6);
 
-	e_binding_new (
-		shell_settings, "cal-show-week-numbers",
-		priv->sel, "show-week-numbers");
-
-	e_binding_new (
-		shell_settings, "cal-use-24-hour-format",
-		priv->sel, "use-24-hour-format");
-
-	e_binding_new (
-		shell_settings, "cal-week-start-day",
-		priv->sel, "week-start-day");
-
 	if (!init_widgets (spage)) {
 		g_message ("schedule_page_construct(): "
 			   "Could not initialize the widgets!");
diff --git a/calendar/gui/dialogs/task-details-page.c b/calendar/gui/dialogs/task-details-page.c
index 4a5b5b094e..c549633eb5 100644
--- a/calendar/gui/dialogs/task-details-page.c
+++ b/calendar/gui/dialogs/task-details-page.c
@@ -474,7 +474,6 @@ get_widgets (TaskDetailsPage *tdpage)
 	priv->date_completed_label = GW ("date_completed_label");
 
 	priv->completed_date = GW ("completed-date");
-	comp_editor_bind_date_edit_settings (priv->completed_date, NULL);
 	gtk_widget_show (priv->completed_date);
 
 	priv->url_label = GW ("url_label");
diff --git a/calendar/gui/dialogs/task-editor.c b/calendar/gui/dialogs/task-editor.c
index a3d4baec46..7aaa3c5afe 100644
--- a/calendar/gui/dialogs/task-editor.c
+++ b/calendar/gui/dialogs/task-editor.c
@@ -202,25 +202,12 @@ static void
 task_editor_constructed (GObject *object)
 {
 	TaskEditorPrivate *priv;
-	EShellSettings *shell_settings;
-	EShell *shell;
 
 	priv = TASK_EDITOR_GET_PRIVATE (object);
 
-	shell = comp_editor_get_shell (COMP_EDITOR (object));
-	shell_settings = e_shell_get_shell_settings (shell);
-
 	e_binding_new (
 		object, "client",
 		priv->model, "client");
-
-	e_binding_new (
-		shell_settings, "cal-free-busy-template",
-		priv->model, "free-busy-template");
-
-	e_binding_new (
-		shell_settings, "cal-timezone",
-		priv->model, "timezone");
 }
 
 static void
diff --git a/calendar/gui/dialogs/task-page.c b/calendar/gui/dialogs/task-page.c
index 33413250ad..623260cf46 100644
--- a/calendar/gui/dialogs/task-page.c
+++ b/calendar/gui/dialogs/task-page.c
@@ -1360,10 +1360,8 @@ get_widgets (TaskPage *tpage)
 
 	/* Glade's visibility flag doesn't seem to work for custom widgets */
 	priv->due_date = e_builder_get_widget (priv->builder, "due-date");
-	comp_editor_bind_date_edit_settings (priv->due_date, NULL);
 	gtk_widget_show (priv->due_date);
 	priv->start_date = e_builder_get_widget (priv->builder, "start-date");
-	comp_editor_bind_date_edit_settings (priv->start_date, NULL);
 	gtk_widget_show (priv->start_date);
 
 	priv->timezone = e_builder_get_widget (priv->builder, "timezone");
diff --git a/calendar/gui/e-cal-model-calendar.c b/calendar/gui/e-cal-model-calendar.c
index 6df5588dae..778b72de21 100644
--- a/calendar/gui/e-cal-model-calendar.c
+++ b/calendar/gui/e-cal-model-calendar.c
@@ -525,11 +525,7 @@ ecmc_fill_component_from_model (ECalModel *model, ECalModelComponent *comp_data,
  * e_cal_model_calendar_new
  */
 ECalModel *
-e_cal_model_calendar_new (EShellSettings *shell_settings)
+e_cal_model_calendar_new (void)
 {
-	g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);
-
-	return g_object_new (
-		E_TYPE_CAL_MODEL_CALENDAR,
-		"shell-settings", shell_settings, NULL);
+	return g_object_new (E_TYPE_CAL_MODEL_CALENDAR, NULL);
 }
diff --git a/calendar/gui/e-cal-model-calendar.h b/calendar/gui/e-cal-model-calendar.h
index f1027032cb..6e3b3fe617 100644
--- a/calendar/gui/e-cal-model-calendar.h
+++ b/calendar/gui/e-cal-model-calendar.h
@@ -71,8 +71,8 @@ struct _ECalModelCalendarClass {
 	ECalModelClass parent_class;
 };
 
-GType		e_cal_model_calendar_get_type (void);
-ECalModel *	e_cal_model_calendar_new	(EShellSettings *shell_settings);
+GType		e_cal_model_calendar_get_type	(void);
+ECalModel *	e_cal_model_calendar_new	(void);
 
 G_END_DECLS
 
diff --git a/calendar/gui/e-cal-model-memos.c b/calendar/gui/e-cal-model-memos.c
index 41f63700c8..38e55ef71a 100644
--- a/calendar/gui/e-cal-model-memos.c
+++ b/calendar/gui/e-cal-model-memos.c
@@ -261,11 +261,7 @@ ecmm_fill_component_from_model (ECalModel *model, ECalModelComponent *comp_data,
  * e_cal_model_memos_new
  */
 ECalModel *
-e_cal_model_memos_new (EShellSettings *shell_settings)
+e_cal_model_memos_new (void)
 {
-	g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);
-
-	return g_object_new (
-		E_TYPE_CAL_MODEL_MEMOS,
-		"shell-settings", shell_settings, NULL);
+	return g_object_new (E_TYPE_CAL_MODEL_MEMOS, NULL);
 }
diff --git a/calendar/gui/e-cal-model-memos.h b/calendar/gui/e-cal-model-memos.h
index b58faa539b..3977bbe0cb 100644
--- a/calendar/gui/e-cal-model-memos.h
+++ b/calendar/gui/e-cal-model-memos.h
@@ -71,7 +71,7 @@ struct _ECalModelMemosClass {
 };
 
 GType		e_cal_model_memos_get_type	(void);
-ECalModel *	e_cal_model_memos_new		(EShellSettings *shell_settings);
+ECalModel *	e_cal_model_memos_new		(void);
 
 G_END_DECLS
 
diff --git a/calendar/gui/e-cal-model-tasks.c b/calendar/gui/e-cal-model-tasks.c
index e6fd01e9c9..c69e7452b9 100644
--- a/calendar/gui/e-cal-model-tasks.c
+++ b/calendar/gui/e-cal-model-tasks.c
@@ -133,27 +133,6 @@ cal_model_tasks_finalize (GObject *object)
 }
 
 static void
-cal_model_tasks_constructed (GObject *object)
-{
-	ECalModel *model;
-	EShellSettings *shell_settings;
-
-	model = E_CAL_MODEL (object);
-	shell_settings = e_cal_model_get_shell_settings (model);
-
-	e_binding_new (
-		shell_settings, "cal-tasks-color-due-today",
-		model, "color-due-today");
-
-	e_binding_new (
-		shell_settings, "cal-tasks-color-overdue",
-		model, "color-overdue");
-
-	/* Chain up to parent's constructed() method. */
-	G_OBJECT_CLASS (e_cal_model_tasks_parent_class)->constructed (object);
-}
-
-static void
 e_cal_model_tasks_class_init (ECalModelTasksClass *class)
 {
 	GObjectClass *object_class;
@@ -166,7 +145,6 @@ e_cal_model_tasks_class_init (ECalModelTasksClass *class)
 	object_class->set_property = cal_model_tasks_set_property;
 	object_class->get_property = cal_model_tasks_get_property;
 	object_class->finalize = cal_model_tasks_finalize;
-	object_class->constructed = cal_model_tasks_constructed;
 
 	table_model_class = E_TABLE_MODEL_CLASS (class);
 	table_model_class->column_count = ecmt_column_count;
@@ -1157,13 +1135,9 @@ ecmt_fill_component_from_model (ECalModel *model, ECalModelComponent *comp_data,
 }
 
 ECalModel *
-e_cal_model_tasks_new (EShellSettings *shell_settings)
+e_cal_model_tasks_new (void)
 {
-	g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);
-
-	return g_object_new (
-		E_TYPE_CAL_MODEL_TASKS,
-		"shell-settings", shell_settings, NULL);
+	return g_object_new (E_TYPE_CAL_MODEL_TASKS, NULL);
 }
 
 const gchar *
diff --git a/calendar/gui/e-cal-model-tasks.h b/calendar/gui/e-cal-model-tasks.h
index 056325547d..c0ceaaa2c5 100644
--- a/calendar/gui/e-cal-model-tasks.h
+++ b/calendar/gui/e-cal-model-tasks.h
@@ -79,7 +79,7 @@ struct _ECalModelTasksClass {
 };
 
 GType		e_cal_model_tasks_get_type	(void);
-ECalModel *	e_cal_model_tasks_new		(EShellSettings *shell_settings);
+ECalModel *	e_cal_model_tasks_new		(void);
 const gchar *	e_cal_model_tasks_get_color_due_today
 						(ECalModelTasks *model);
 void		e_cal_model_tasks_set_color_due_today
diff --git a/calendar/gui/e-cal-model.c b/calendar/gui/e-cal-model.c
index 1004d1b2a0..eaa5df68e1 100644
--- a/calendar/gui/e-cal-model.c
+++ b/calendar/gui/e-cal-model.c
@@ -35,7 +35,7 @@
 #include "e-cal-model.h"
 #include "itip-utils.h"
 #include "misc.h"
-#include "e-util/e-binding.h"
+#include "e-util/e-extensible.h"
 #include "e-util/e-util.h"
 
 #define E_CAL_MODEL_GET_PRIVATE(obj) \
@@ -54,8 +54,6 @@ typedef struct {
 } ECalModelClient;
 
 struct _ECalModelPrivate {
-	EShellSettings *shell_settings;
-
 	/* The list of clients we are managing. Each element is of type ECalModelClient */
 	GList *clients;
 
@@ -128,7 +126,6 @@ static void remove_client (ECalModel *model, ECalModelClient *client_data);
 enum {
 	PROP_0,
 	PROP_DEFAULT_CLIENT,
-	PROP_SHELL_SETTINGS,
 	PROP_TIMEZONE,
 	PROP_USE_24_HOUR_FORMAT,
 	PROP_WEEK_START_DAY
@@ -147,17 +144,9 @@ enum {
 static gpointer parent_class;
 static guint signals[LAST_SIGNAL];
 
-G_DEFINE_TYPE (ECalModel, e_cal_model, E_TABLE_MODEL_TYPE)
-
-static void
-cal_model_set_shell_settings (ECalModel *cal_model,
-                              EShellSettings *shell_settings)
-{
-	g_return_if_fail (E_IS_SHELL_SETTINGS (shell_settings));
-	g_return_if_fail (cal_model->priv->shell_settings == NULL);
-
-	cal_model->priv->shell_settings = g_object_ref (shell_settings);
-}
+G_DEFINE_TYPE_WITH_CODE (
+	ECalModel, e_cal_model, E_TABLE_MODEL_TYPE,
+	G_IMPLEMENT_INTERFACE (E_TYPE_EXTENSIBLE, NULL))
 
 static void
 cal_model_set_property (GObject *object,
@@ -172,12 +161,6 @@ cal_model_set_property (GObject *object,
 				g_value_get_object (value));
 			return;
 
-		case PROP_SHELL_SETTINGS:
-			cal_model_set_shell_settings (
-				E_CAL_MODEL (object),
-				g_value_get_object (value));
-			return;
-
 		case PROP_TIMEZONE:
 			e_cal_model_set_timezone (
 				E_CAL_MODEL (object),
@@ -214,13 +197,6 @@ cal_model_get_property (GObject *object,
 				E_CAL_MODEL (object)));
 			return;
 
-		case PROP_SHELL_SETTINGS:
-			g_value_set_object (
-				value,
-				e_cal_model_get_shell_settings (
-				E_CAL_MODEL (object)));
-			return;
-
 		case PROP_TIMEZONE:
 			g_value_set_pointer (
 				value,
@@ -253,11 +229,6 @@ cal_model_dispose (GObject *object)
 
 	priv = E_CAL_MODEL_GET_PRIVATE (object);
 
-	if (priv->shell_settings != NULL) {
-		g_object_unref (priv->shell_settings);
-		priv->shell_settings = NULL;
-	}
-
 	if (priv->clients) {
 		while (priv->clients != NULL) {
 			ECalModelClient *client_data = (ECalModelClient *) priv->clients->data;
@@ -316,28 +287,6 @@ cal_model_finalize (GObject *object)
 }
 
 static void
-cal_model_constructed (GObject *object)
-{
-	ECalModel *model;
-	EShellSettings *shell_settings;
-
-	model = E_CAL_MODEL (object);
-	shell_settings = e_cal_model_get_shell_settings (model);
-
-	e_binding_new (
-		shell_settings, "cal-timezone",
-		model, "timezone");
-
-	e_binding_new (
-		shell_settings, "cal-use-24-hour-format",
-		model, "use-24-hour-format");
-
-	e_binding_new (
-		shell_settings, "cal-week-start-day",
-		model, "week-start-day");
-}
-
-static void
 e_cal_model_class_init (ECalModelClass *class)
 {
 	GObjectClass *object_class;
@@ -351,7 +300,6 @@ e_cal_model_class_init (ECalModelClass *class)
 	object_class->get_property = cal_model_get_property;
 	object_class->dispose = cal_model_dispose;
 	object_class->finalize = cal_model_finalize;
-	object_class->constructed = cal_model_constructed;
 
 	etm_class = E_TABLE_MODEL_CLASS (class);
 	etm_class->column_count = ecm_column_count;
@@ -381,17 +329,6 @@ e_cal_model_class_init (ECalModelClass *class)
 
 	g_object_class_install_property (
 		object_class,
-		PROP_SHELL_SETTINGS,
-		g_param_spec_object (
-			"shell-settings",
-			_("Shell Settings"),
-			_("Application-wide settings"),
-			E_TYPE_SHELL_SETTINGS,
-			G_PARAM_READWRITE |
-			G_PARAM_CONSTRUCT_ONLY));
-
-	g_object_class_install_property (
-		object_class,
 		PROP_TIMEZONE,
 		g_param_spec_pointer (
 			"timezone",
@@ -502,6 +439,8 @@ e_cal_model_init (ECalModel *model)
 	model->priv->notify_modified = NULL;
 	model->priv->notify_removed = NULL;
 	model->priv->notify_lock = g_mutex_new ();
+
+	e_extensible_load_extensions (E_EXTENSIBLE (model));
 }
 
 /* ETableModel methods */
@@ -1376,14 +1315,6 @@ ecm_get_color_for_component (ECalModel *model, ECalModelComponent *comp_data)
 	return assigned_colors[first_empty].color;
 }
 
-EShellSettings *
-e_cal_model_get_shell_settings (ECalModel *model)
-{
-	g_return_val_if_fail (E_IS_CAL_MODEL (model), NULL);
-
-	return model->priv->shell_settings;
-}
-
 icalcomponent_kind
 e_cal_model_get_component_kind (ECalModel *model)
 {
diff --git a/calendar/gui/e-cal-model.h b/calendar/gui/e-cal-model.h
index 2d30f1877f..ee914eef67 100644
--- a/calendar/gui/e-cal-model.h
+++ b/calendar/gui/e-cal-model.h
@@ -29,7 +29,6 @@
 #include <table/e-table-model.h>
 #include <libecal/e-cal.h>
 #include "e-cell-date-edit-text.h"
-#include <shell/e-shell-settings.h>
 
 /* Standard GObject macros */
 #define E_TYPE_CAL_MODEL \
@@ -173,7 +172,6 @@ typedef time_t (*ECalModelDefaultTimeFunc) (ECalModel *model, gpointer user_data
 
 GType		e_cal_model_get_type		(void);
 GType		e_cal_model_component_get_type	(void);
-EShellSettings *e_cal_model_get_shell_settings	(ECalModel *model);
 icalcomponent_kind
 		e_cal_model_get_component_kind	(ECalModel *model);
 void		e_cal_model_set_component_kind	(ECalModel *model,
diff --git a/calendar/gui/e-calendar-view.c b/calendar/gui/e-calendar-view.c
index 42e4c1cd7a..d41ef007a4 100644
--- a/calendar/gui/e-calendar-view.c
+++ b/calendar/gui/e-calendar-view.c
@@ -33,6 +33,7 @@
 #include <libedataserver/e-time-utils.h>
 #include <e-util/e-util.h>
 #include <e-util/e-alert-dialog.h>
+#include <e-util/e-extensible.h>
 #include <e-util/e-selection.h>
 #include <e-util/e-datetime-format.h>
 #include <e-util/e-dialog-utils.h>
@@ -104,7 +105,9 @@ static guint signals[LAST_SIGNAL];
 
 static void calendar_view_selectable_init (ESelectableInterface *interface);
 
-G_DEFINE_ABSTRACT_TYPE_WITH_CODE (ECalendarView, e_calendar_view, GTK_TYPE_TABLE,
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (
+	ECalendarView, e_calendar_view, GTK_TYPE_TABLE,
+	G_IMPLEMENT_INTERFACE (E_TYPE_EXTENSIBLE, NULL)
 	G_IMPLEMENT_INTERFACE (E_TYPE_SELECTABLE, calendar_view_selectable_init));
 
 static void
@@ -873,6 +876,8 @@ e_calendar_view_init (ECalendarView *calendar_view)
 	target_list = gtk_target_list_new (NULL, 0);
 	e_target_list_add_calendar_targets (target_list, 0);
 	calendar_view->priv->paste_target_list = target_list;
+
+	e_extensible_load_extensions (E_EXTENSIBLE (calendar_view));
 }
 
 static void
diff --git a/calendar/gui/e-day-view.c b/calendar/gui/e-day-view.c
index 3df599f5d7..cbc71b969c 100644
--- a/calendar/gui/e-day-view.c
+++ b/calendar/gui/e-day-view.c
@@ -590,56 +590,12 @@ static void
 day_view_constructed (GObject *object)
 {
 	ECalModel *model;
-	EDayView *day_view;
-	EShellSettings *shell_settings;
-
-	day_view = E_DAY_VIEW (object);
-	model = e_calendar_view_get_model (E_CALENDAR_VIEW (day_view));
-	shell_settings = e_cal_model_get_shell_settings (model);
-
-	e_binding_new (
-		shell_settings, "cal-day-view-show-week-numbers",
-		day_view->week_number_label, "visible");
-
-	e_binding_new (
-		shell_settings, "cal-marcus-bains-show-line",
-		day_view, "marcus-bains-show-line");
-
-	e_binding_new (
-		shell_settings, "cal-marcus-bains-day-view-color",
-		day_view, "marcus-bains-day-view-color");
-
-	e_binding_new (
-		shell_settings, "cal-marcus-bains-time-bar-color",
-		day_view, "marcus-bains-time-bar-color");
-
-	e_binding_new (
-		shell_settings, "cal-time-divisions",
-		day_view, "mins-per-row");
-
-	e_binding_new (
-		shell_settings, "cal-work-day-end-hour",
-		day_view, "work-day-end-hour");
-
-	e_binding_new (
-		shell_settings, "cal-work-day-end-minute",
-		day_view, "work-day-end-minute");
-
-	e_binding_new (
-		shell_settings, "cal-work-day-start-hour",
-		day_view, "work-day-start-hour");
-
-	e_binding_new (
-		shell_settings, "cal-work-day-start-minute",
-		day_view, "work-day-start-minute");
 
-	e_binding_new (
-		shell_settings, "cal-working-days-bitset",
-		day_view, "working-days");
+	model = e_calendar_view_get_model (E_CALENDAR_VIEW (object));
 
 	g_signal_connect_swapped (
 		model, "notify::week-start-day",
-		G_CALLBACK (day_view_notify_week_start_day_cb), day_view);
+		G_CALLBACK (day_view_notify_week_start_day_cb), object);
 }
 
 static void
diff --git a/calendar/gui/e-meeting-store.c b/calendar/gui/e-meeting-store.c
index 8b9f02c5a5..28f171219e 100644
--- a/calendar/gui/e-meeting-store.c
+++ b/calendar/gui/e-meeting-store.c
@@ -31,6 +31,7 @@
 #include <libecal/e-cal-util.h>
 #include <libecal/e-cal-time-util.h>
 #include <libedataserver/e-data-server-util.h>
+#include <e-util/e-extensible.h>
 #include "itip-utils.h"
 #include "e-meeting-utils.h"
 #include "e-meeting-attendee.h"
@@ -87,7 +88,13 @@ enum {
 	PROP_TIMEZONE
 };
 
-static gpointer parent_class;
+/* Forward Declarations */
+static void ems_tree_model_init (GtkTreeModelIface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (
+	EMeetingStore, e_meeting_store, GTK_TYPE_LIST_STORE,
+	G_IMPLEMENT_INTERFACE (E_TYPE_EXTENSIBLE, NULL)
+	G_IMPLEMENT_INTERFACE (GTK_TYPE_TREE_MODEL, ems_tree_model_init))
 
 static icalparameter_cutype
 text_to_type (const gchar *type)
@@ -624,15 +631,14 @@ meeting_store_finalize (GObject *object)
 	g_mutex_free (priv->mutex);
 
 	/* Chain up to parent's finalize() method. */
-	G_OBJECT_CLASS (parent_class)->finalize (object);
+	G_OBJECT_CLASS (e_meeting_store_parent_class)->finalize (object);
 }
 
 static void
-meeting_store_class_init (GObjectClass *class)
+e_meeting_store_class_init (EMeetingStoreClass *class)
 {
 	GObjectClass *object_class;
 
-	parent_class = g_type_class_peek_parent (class);
 	g_type_class_add_private (class, sizeof (EMeetingStorePrivate));
 
 	object_class = G_OBJECT_CLASS (class);
@@ -671,7 +677,7 @@ meeting_store_class_init (GObjectClass *class)
 }
 
 static void
-meeting_store_init (EMeetingStore *store)
+e_meeting_store_init (EMeetingStore *store)
 {
 	store->priv = E_MEETING_STORE_GET_PRIVATE (store);
 
@@ -682,41 +688,8 @@ meeting_store_init (EMeetingStore *store)
 	store->priv->mutex = g_mutex_new ();
 
 	store->priv->num_queries = 0;
-}
-
-GType
-e_meeting_store_get_type (void)
-{
-	static GType type = 0;
-
-	if (G_UNLIKELY (type == 0)) {
-		static const GTypeInfo type_info = {
-			sizeof (EMeetingStoreClass),
-			(GBaseInitFunc) NULL,
-			(GBaseFinalizeFunc) NULL,
-			(GClassInitFunc) meeting_store_class_init,
-			(GClassFinalizeFunc) NULL,
-			NULL,  /* class_data */
-			sizeof (EMeetingStore),
-			0,     /* n_preallocs */
-			(GInstanceInitFunc) meeting_store_init,
-			NULL   /* value_table */
-		};
-
-		static const GInterfaceInfo tree_model_info = {
-			(GInterfaceInitFunc) ems_tree_model_init,
-			NULL,
-			NULL
-		};
-
-		type = g_type_register_static (
-			GTK_TYPE_LIST_STORE, "EMeetingStore", &type_info, 0);
-
-		g_type_add_interface_static (
-			type, GTK_TYPE_TREE_MODEL, &tree_model_info);
-	}
 
-	return type;
+	e_extensible_load_extensions (E_EXTENSIBLE (store));
 }
 
 GObject *
diff --git a/calendar/gui/e-meeting-time-sel.c b/calendar/gui/e-meeting-time-sel.c
index 19a572d6d8..72f531bc0f 100644
--- a/calendar/gui/e-meeting-time-sel.c
+++ b/calendar/gui/e-meeting-time-sel.c
@@ -40,6 +40,7 @@
 
 #include "misc/e-dateedit.h"
 #include "e-util/e-binding.h"
+#include "e-util/e-extensible.h"
 #include "e-util/e-util.h"
 
 #include "e-meeting-utils.h"
@@ -203,7 +204,9 @@ static void row_deleted_cb (GtkTreeModel *model, GtkTreePath *path, gpointer dat
 
 static void free_busy_template_changed_cb (EMeetingTimeSelector *mts);
 
-G_DEFINE_TYPE (EMeetingTimeSelector, e_meeting_time_selector, GTK_TYPE_TABLE)
+G_DEFINE_TYPE_WITH_CODE (
+	EMeetingTimeSelector, e_meeting_time_selector, GTK_TYPE_TABLE,
+	G_IMPLEMENT_INTERFACE (E_TYPE_EXTENSIBLE, NULL))
 
 static void
 meeting_time_selector_set_property (GObject *object,
@@ -391,6 +394,8 @@ e_meeting_time_selector_init (EMeetingTimeSelector * mts)
 
 	mts->fb_refresh_not = 0;
 	mts->style_change_idle_id = 0;
+
+	e_extensible_load_extensions (E_EXTENSIBLE (mts));
 }
 
 void
diff --git a/calendar/gui/e-week-view.c b/calendar/gui/e-week-view.c
index c319520924..23cc8e6654 100644
--- a/calendar/gui/e-week-view.c
+++ b/calendar/gui/e-week-view.c
@@ -522,19 +522,9 @@ week_view_constructed (GObject *object)
 {
 	ECalModel *model;
 	ECalendarView *calendar_view;
-	EShellSettings *shell_settings;
 
 	calendar_view = E_CALENDAR_VIEW (object);
 	model = e_calendar_view_get_model (calendar_view);
-	shell_settings = e_cal_model_get_shell_settings (model);
-
-	e_binding_new (
-		shell_settings, "cal-compress-weekend",
-		object, "compress-weekend");
-
-	e_binding_new (
-		shell_settings, "cal-show-event-end-times",
-		object, "show-event-end-times");
 
 	g_signal_connect_swapped (
 		model, "notify::week-start-day",
diff --git a/calendar/gui/gnome-cal.c b/calendar/gui/gnome-cal.c
index 670512bb43..aca3064531 100644
--- a/calendar/gui/gnome-cal.c
+++ b/calendar/gui/gnome-cal.c
@@ -76,8 +76,6 @@ static GHashTable *non_intrusive_error_table = NULL;
 
 /* Private part of the GnomeCalendar structure */
 struct _GnomeCalendarPrivate {
-	EShellSettings *shell_settings;
-
 	ECalModel *model;
 
 	/*
@@ -329,16 +327,6 @@ gnome_calendar_update_time_range (GnomeCalendar *gcal)
 }
 
 static void
-gnome_calendar_set_shell_settings (GnomeCalendar *gcal,
-                                   EShellSettings *shell_settings)
-{
-	g_return_if_fail (E_IS_SHELL_SETTINGS (shell_settings));
-	g_return_if_fail (gcal->priv->shell_settings == NULL);
-
-	gcal->priv->shell_settings = g_object_ref (shell_settings);
-}
-
-static void
 gnome_calendar_set_property (GObject *object,
                              guint property_id,
                              const GValue *value,
@@ -351,12 +339,6 @@ gnome_calendar_set_property (GObject *object,
 				g_value_get_object (value));
 			return;
 
-		case PROP_SHELL_SETTINGS:
-			gnome_calendar_set_shell_settings (
-				GNOME_CALENDAR (object),
-				g_value_get_object (value));
-			return;
-
 		case PROP_VIEW:
 			gnome_calendar_set_view (
 				GNOME_CALENDAR (object),
@@ -392,12 +374,6 @@ gnome_calendar_get_property (GObject *object,
 				GNOME_CALENDAR (object)));
 			return;
 
-		case PROP_SHELL_SETTINGS:
-			g_value_set_object (
-				value, gnome_calendar_get_shell_settings (
-				GNOME_CALENDAR (object)));
-			return;
-
 		case PROP_VIEW:
 			g_value_set_int (
 				value, gnome_calendar_get_view (
@@ -424,15 +400,12 @@ static void
 gnome_calendar_constructed (GObject *object)
 {
 	GnomeCalendar *gcal = GNOME_CALENDAR (object);
-	EShellSettings *shell_settings;
 	ECalendarView *calendar_view;
 	ECalModel *model;
 	GtkAdjustment *adjustment;
 
-	shell_settings = gnome_calendar_get_shell_settings (gcal);
-
 	/* Create the model for the views. */
-	model = e_cal_model_calendar_new (shell_settings);
+	model = e_cal_model_calendar_new ();
 	e_cal_model_set_flags (model, E_CAL_MODEL_FLAGS_EXPAND_RECURRENCES);
 	gcal->priv->model = model;
 
@@ -545,17 +518,6 @@ gnome_calendar_class_init (GnomeCalendarClass *class)
 
 	g_object_class_install_property (
 		object_class,
-		PROP_SHELL_SETTINGS,
-		g_param_spec_object (
-			"shell-settings",
-			_("Shell Settings"),
-			_("Application-wide settings"),
-			E_TYPE_SHELL_SETTINGS,
-			G_PARAM_READWRITE |
-			G_PARAM_CONSTRUCT_ONLY));
-
-	g_object_class_install_property (
-		object_class,
 		PROP_VIEW,
 		g_param_spec_int (
 			"view",
@@ -1492,11 +1454,6 @@ gnome_calendar_do_dispose (GObject *object)
 	priv = gcal->priv;
 
 	
-	if (priv->shell_settings != NULL) {
-		g_object_unref (priv->shell_settings);
-		priv->shell_settings = NULL;
-	}
-
 	if (priv->model != NULL) {
 		g_signal_handlers_disconnect_by_func (
 			priv->model, view_progress_cb, gcal);
@@ -1906,21 +1863,9 @@ non_intrusive_error_remove(GtkWidget *w, gpointer data)
 }
 
 GtkWidget *
-gnome_calendar_new (EShellSettings *shell_settings)
+gnome_calendar_new (void)
 {
-	g_return_val_if_fail (E_IS_SHELL_SETTINGS (shell_settings), NULL);
-
-	return g_object_new (
-		GNOME_TYPE_CALENDAR,
-		"shell-settings", shell_settings, NULL);
-}
-
-EShellSettings *
-gnome_calendar_get_shell_settings (GnomeCalendar *gcal)
-{
-	g_return_val_if_fail (GNOME_IS_CALENDAR (gcal), NULL);
-
-	return gcal->priv->shell_settings;
+	return g_object_new (GNOME_TYPE_CALENDAR, NULL);
 }
 
 ECalendar *
diff --git a/calendar/gui/gnome-cal.h b/calendar/gui/gnome-cal.h
index 4fa36b1446..52047a0e19 100644
--- a/calendar/gui/gnome-cal.h
+++ b/calendar/gui/gnome-cal.h
@@ -31,7 +31,6 @@
 #include <gtk/gtk.h>
 #include <misc/e-calendar.h>
 #include <libecal/e-cal.h>
-#include <shell/e-shell-settings.h>
 
 #include "e-cal-model.h"
 
@@ -113,10 +112,8 @@ struct _GnomeCalendarClass {
 };
 
 GType		gnome_calendar_get_type		(void);
-GtkWidget *	gnome_calendar_new		(EShellSettings *shell_settings);
+GtkWidget *	gnome_calendar_new		(void);
 void		gnome_calendar_dispose          (GnomeCalendar *gcal);
-EShellSettings *gnome_calendar_get_shell_settings
-						(GnomeCalendar *gcal);
 ECalendar *	gnome_calendar_get_date_navigator
 						(GnomeCalendar *gcal);
 void		gnome_calendar_set_date_navigator