Do not call g_object_notify() when property didn't change

19 files changed, 158 insertions, 2 deletions

diff --git a/calendar/gui/dialogs/comp-editor-page.c b/calendar/gui/dialogs/comp-editor-page.c
index 2f4e942bf1..e24bca5c1e 100644
--- a/calendar/gui/dialogs/comp-editor-page.c
+++ b/calendar/gui/dialogs/comp-editor-page.c
@@ -224,6 +224,9 @@ comp_editor_page_set_updating (CompEditorPage *page,
 {
 	g_return_if_fail (IS_COMP_EDITOR_PAGE (page));
 
+	if ((page->priv->updating ? 1 : 0) == (updating ? 1 : 0))
+		return;
+
 	page->priv->updating = updating;
 
 	g_object_notify (G_OBJECT (page), "updating");
diff --git a/calendar/gui/dialogs/comp-editor.c b/calendar/gui/dialogs/comp-editor.c
index 027146753c..8d840cbc99 100644
--- a/calendar/gui/dialogs/comp-editor.c
+++ b/calendar/gui/dialogs/comp-editor.c
@@ -2441,6 +2441,9 @@ comp_editor_set_summary (CompEditor *editor,
 
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (g_strcmp0 (editor->priv->summary, summary) == 0)
+		return;
+
 	g_free (editor->priv->summary);
 	editor->priv->summary = g_strdup (summary);
 
@@ -2485,6 +2488,9 @@ comp_editor_set_timezone (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->zone == zone)
+		return;
+
 	editor->priv->zone = zone;
 
 	g_object_notify (G_OBJECT (editor), "timezone");
@@ -2504,6 +2510,9 @@ comp_editor_set_use_24_hour_format (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if ((editor->priv->use_24_hour_format ? 1 : 0) == (use_24_hour_format ? 1 : 0))
+		return;
+
 	editor->priv->use_24_hour_format = use_24_hour_format;
 
 	g_object_notify (G_OBJECT (editor), "use-24-hour-format");
@@ -2523,6 +2532,9 @@ comp_editor_set_work_day_end_hour (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->work_day_end_hour == work_day_end_hour)
+		return;
+
 	editor->priv->work_day_end_hour = work_day_end_hour;
 
 	g_object_notify (G_OBJECT (editor), "work-day-end-hour");
@@ -2542,6 +2554,9 @@ comp_editor_set_work_day_end_minute (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->work_day_end_minute == work_day_end_minute)
+		return;
+
 	editor->priv->work_day_end_minute = work_day_end_minute;
 
 	g_object_notify (G_OBJECT (editor), "work-day-end-minute");
@@ -2561,6 +2576,9 @@ comp_editor_set_work_day_start_hour (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->work_day_start_hour == work_day_start_hour)
+		return;
+
 	editor->priv->work_day_start_hour = work_day_start_hour;
 
 	g_object_notify (G_OBJECT (editor), "work-day-start-hour");
@@ -2580,6 +2598,9 @@ comp_editor_set_work_day_start_minute (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->work_day_start_minute == work_day_start_minute)
+		return;
+
 	editor->priv->work_day_start_minute = work_day_start_minute;
 
 	g_object_notify (G_OBJECT (editor), "work-day-start-minute");
@@ -2601,6 +2622,9 @@ comp_editor_set_changed (CompEditor *editor,
 
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if ((editor->priv->changed ? 1 : 0) == (changed ? 1 : 0))
+		return;
+
 	editor->priv->changed = changed;
 
 	action = comp_editor_get_action (editor, "save");
@@ -2655,6 +2679,9 @@ comp_editor_set_flags (CompEditor *editor,
 {
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 
+	if (editor->priv->flags == flags)
+		return;
+
 	editor->priv->flags = flags;
 	editor->priv->user_org = flags & COMP_EDITOR_USER_ORG;
 
@@ -3001,6 +3028,9 @@ comp_editor_set_client (CompEditor *editor,
 	g_return_if_fail (IS_COMP_EDITOR (editor));
 	g_return_if_fail (cal_client == NULL || E_IS_CAL_CLIENT (cal_client));
 
+	if (editor->priv->cal_client == cal_client)
+		return;
+
 	if (cal_client != NULL)
 		g_object_ref (cal_client);
 
diff --git a/calendar/gui/e-cal-model-tasks.c b/calendar/gui/e-cal-model-tasks.c
index 565f629b2c..54f95004cc 100644
--- a/calendar/gui/e-cal-model-tasks.c
+++ b/calendar/gui/e-cal-model-tasks.c
@@ -1269,6 +1269,9 @@ e_cal_model_tasks_set_color_due_today (ECalModelTasks *model,
 	g_return_if_fail (E_IS_CAL_MODEL_TASKS (model));
 	g_return_if_fail (color_due_today != NULL);
 
+	if (g_strcmp0 (model->priv->color_due_today, color_due_today) == 0)
+		return;
+
 	g_free (model->priv->color_due_today);
 	model->priv->color_due_today = g_strdup (color_due_today);
 
@@ -1312,6 +1315,9 @@ e_cal_model_tasks_set_color_overdue (ECalModelTasks *model,
 	g_return_if_fail (E_IS_CAL_MODEL_TASKS (model));
 	g_return_if_fail (color_overdue != NULL);
 
+	if (g_strcmp0 (model->priv->color_overdue, color_overdue) == 0)
+		return;
+
 	g_free (model->priv->color_overdue);
 	model->priv->color_overdue = g_strdup (color_overdue);
 
diff --git a/calendar/gui/e-cal-model.c b/calendar/gui/e-cal-model.c
index 2aaefc363d..90c411cee6 100644
--- a/calendar/gui/e-cal-model.c
+++ b/calendar/gui/e-cal-model.c
@@ -1762,6 +1762,9 @@ e_cal_model_set_confirm_delete (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if ((model->priv->confirm_delete ? 1 : 0) == (confirm_delete ? 1 : 0))
+		return;
+
 	model->priv->confirm_delete = confirm_delete;
 
 	g_object_notify (G_OBJECT (model), "confirm-delete");
@@ -1855,6 +1858,9 @@ e_cal_model_set_compress_weekend (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if ((model->priv->compress_weekend ? 1 : 0) == (compress_weekend ? 1 : 0))
+		return;
+
 	model->priv->compress_weekend = compress_weekend;
 
 	g_object_notify (G_OBJECT (model), "compress-weekend");
@@ -1884,6 +1890,9 @@ e_cal_model_set_default_reminder_interval (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->default_reminder_interval == default_reminder_interval)
+		return;
+
 	model->priv->default_reminder_interval = default_reminder_interval;
 
 	g_object_notify (G_OBJECT (model), "default-reminder-interval");
@@ -1903,6 +1912,9 @@ e_cal_model_set_default_reminder_units (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->default_reminder_units == default_reminder_units)
+		return;
+
 	model->priv->default_reminder_units = default_reminder_units;
 
 	g_object_notify (G_OBJECT (model), "default-reminder-units");
@@ -1948,6 +1960,9 @@ e_cal_model_set_use_default_reminder (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if ((model->priv->use_default_reminder ? 1 : 0) == (use_default_reminder ? 1 : 0))
+		return;
+
 	model->priv->use_default_reminder = use_default_reminder;
 
 	g_object_notify (G_OBJECT (model), "use-default-reminder");
@@ -1991,6 +2006,9 @@ e_cal_model_set_work_day_end_hour (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->work_day_end_hour == work_day_end_hour)
+		return;
+
 	model->priv->work_day_end_hour = work_day_end_hour;
 
 	g_object_notify (G_OBJECT (model), "work-day-end-hour");
@@ -2010,6 +2028,9 @@ e_cal_model_set_work_day_end_minute (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->work_day_end_minute == work_day_end_minute)
+		return;
+
 	model->priv->work_day_end_minute = work_day_end_minute;
 
 	g_object_notify (G_OBJECT (model), "work-day-end-minute");
@@ -2029,6 +2050,9 @@ e_cal_model_set_work_day_start_hour (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->work_day_start_hour == work_day_start_hour)
+		return;
+
 	model->priv->work_day_start_hour = work_day_start_hour;
 
 	g_object_notify (G_OBJECT (model), "work-day-start-hour");
@@ -2048,6 +2072,9 @@ e_cal_model_set_work_day_start_minute (ECalModel *model,
 {
 	g_return_if_fail (E_IS_CAL_MODEL (model));
 
+	if (model->priv->work_day_start_minute == work_day_start_minute)
+		return;
+
 	model->priv->work_day_start_minute = work_day_start_minute;
 
 	g_object_notify (G_OBJECT (model), "work-day-start-minute");
@@ -2092,6 +2119,9 @@ e_cal_model_set_default_client (ECalModel *model,
 
 	priv = model->priv;
 
+	if (priv->default_client == client)
+		return;
+
 	if (priv->default_client) {
 		client_data = find_client_data (model, priv->default_client);
 		if (!client_data) {
diff --git a/calendar/gui/e-calendar-view.c b/calendar/gui/e-calendar-view.c
index 7bab36838f..fb82854de3 100644
--- a/calendar/gui/e-calendar-view.c
+++ b/calendar/gui/e-calendar-view.c
@@ -1251,6 +1251,9 @@ e_calendar_view_set_time_divisions (ECalendarView *cal_view,
 {
 	g_return_if_fail (E_IS_CALENDAR_VIEW (cal_view));
 
+	if (cal_view->priv->time_divisions == time_divisions)
+		return;
+
 	cal_view->priv->time_divisions = time_divisions;
 
 	g_object_notify (G_OBJECT (cal_view), "time-divisions");
diff --git a/calendar/gui/e-cell-date-edit-text.c b/calendar/gui/e-cell-date-edit-text.c
index 034d715d9b..d6c2a32ca2 100644
--- a/calendar/gui/e-cell-date-edit-text.c
+++ b/calendar/gui/e-cell-date-edit-text.c
@@ -312,6 +312,9 @@ e_cell_date_edit_text_set_timezone (ECellDateEditText *ecd,
 {
 	g_return_if_fail (E_IS_CELL_DATE_EDIT_TEXT (ecd));
 
+	if (ecd->priv->timezone == timezone)
+		return;
+
 	ecd->priv->timezone = timezone;
 
 	g_object_notify (G_OBJECT (ecd), "timezone");
@@ -331,6 +334,9 @@ e_cell_date_edit_text_set_use_24_hour_format (ECellDateEditText *ecd,
 {
 	g_return_if_fail (E_IS_CELL_DATE_EDIT_TEXT (ecd));
 
+	if ((ecd->priv->use_24_hour_format ? 1 : 0) == (use_24_hour ? 1 : 0))
+		return;
+
 	ecd->priv->use_24_hour_format = use_24_hour;
 
 	g_object_notify (G_OBJECT (ecd), "use-24-hour-format");
diff --git a/calendar/gui/e-date-time-list.c b/calendar/gui/e-date-time-list.c
index 70a4578f70..4ca04a3f16 100644
--- a/calendar/gui/e-date-time-list.c
+++ b/calendar/gui/e-date-time-list.c
@@ -525,6 +525,9 @@ e_date_time_list_set_use_24_hour_format (EDateTimeList *date_time_list,
 {
 	g_return_if_fail (E_IS_DATE_TIME_LIST (date_time_list));
 
+	if ((date_time_list->use_24_hour_format ? 1 : 0) == (use_24_hour_format ? 1 : 0))
+		return;
+
 	date_time_list->use_24_hour_format = use_24_hour_format;
 
 	g_object_notify (G_OBJECT (date_time_list), "use-24-hour-format");
diff --git a/calendar/gui/e-day-view-main-item.c b/calendar/gui/e-day-view-main-item.c
index cb20ffeb4e..32021b670a 100644
--- a/calendar/gui/e-day-view-main-item.c
+++ b/calendar/gui/e-day-view-main-item.c
@@ -1277,6 +1277,9 @@ e_day_view_main_item_set_day_view (EDayViewMainItem *main_item,
 	g_return_if_fail (E_IS_DAY_VIEW_MAIN_ITEM (main_item));
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if (main_item->priv->day_view == day_view)
+		return;
+
 	if (main_item->priv->day_view != NULL)
 		g_object_unref (main_item->priv->day_view);
 
diff --git a/calendar/gui/e-day-view-time-item.c b/calendar/gui/e-day-view-time-item.c
index 3ddc9489d1..02600d0225 100644
--- a/calendar/gui/e-day-view-time-item.c
+++ b/calendar/gui/e-day-view-time-item.c
@@ -1011,6 +1011,9 @@ e_day_view_time_item_set_day_view (EDayViewTimeItem *time_item,
 	g_return_if_fail (E_IS_DAY_VIEW_TIME_ITEM (time_item));
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if (time_item->priv->day_view == day_view)
+		return;
+
 	if (time_item->priv->day_view != NULL)
 		g_object_unref (time_item->priv->day_view);
 
diff --git a/calendar/gui/e-day-view-top-item.c b/calendar/gui/e-day-view-top-item.c
index b5afbdf4e4..15cfc8079d 100644
--- a/calendar/gui/e-day-view-top-item.c
+++ b/calendar/gui/e-day-view-top-item.c
@@ -858,6 +858,9 @@ e_day_view_top_item_set_day_view (EDayViewTopItem *top_item,
 	g_return_if_fail (E_IS_DAY_VIEW_TOP_ITEM (top_item));
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if (top_item->priv->day_view == day_view)
+		return;
+
 	if (top_item->priv->day_view != NULL)
 		g_object_unref (top_item->priv->day_view);
 
@@ -880,6 +883,9 @@ e_day_view_top_item_set_show_dates (EDayViewTopItem *top_item,
 {
 	g_return_if_fail (E_IS_DAY_VIEW_TOP_ITEM (top_item));
 
+	if ((top_item->priv->show_dates ? 1 : 0) == (show_dates ? 1 : 0))
+		return;
+
 	top_item->priv->show_dates = show_dates;
 
 	g_object_notify (G_OBJECT (top_item), "show-dates");
diff --git a/calendar/gui/e-day-view.c b/calendar/gui/e-day-view.c
index 4d15f03939..da77c4d51d 100644
--- a/calendar/gui/e-day-view.c
+++ b/calendar/gui/e-day-view.c
@@ -2827,6 +2827,9 @@ e_day_view_marcus_bains_set_show_line (EDayView *day_view,
 {
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if ((day_view->marcus_bains_show_line ? 1 : 0) == (show_line ? 1 : 0))
+		return;
+
 	day_view->marcus_bains_show_line = show_line;
 
 	e_day_view_marcus_bains_update (day_view);
@@ -2848,6 +2851,9 @@ e_day_view_marcus_bains_set_day_view_color (EDayView *day_view,
 {
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if (g_strcmp0 (day_view->marcus_bains_day_view_color, day_view_color) == 0)
+		return;
+
 	g_free (day_view->marcus_bains_day_view_color);
 	day_view->marcus_bains_day_view_color = g_strdup (day_view_color);
 
@@ -2870,6 +2876,9 @@ e_day_view_marcus_bains_set_time_bar_color (EDayView *day_view,
 {
 	g_return_if_fail (E_IS_DAY_VIEW (day_view));
 
+	if (g_strcmp0 (day_view->marcus_bains_time_bar_color, time_bar_color) == 0)
+		return;
+
 	g_free (day_view->marcus_bains_time_bar_color);
 	day_view->marcus_bains_time_bar_color = g_strdup (time_bar_color);
 
diff --git a/calendar/gui/e-meeting-store.c b/calendar/gui/e-meeting-store.c
index 6e73107b6f..6d15afc130 100644
--- a/calendar/gui/e-meeting-store.c
+++ b/calendar/gui/e-meeting-store.c
@@ -879,6 +879,9 @@ e_meeting_store_set_client (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (store->priv->client == client)
+		return;
+
 	if (client != NULL) {
 		g_return_if_fail (E_IS_CAL_CLIENT (client));
 		g_object_ref (client);
@@ -906,6 +909,9 @@ e_meeting_store_set_default_reminder_interval (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (store->priv->default_reminder_interval == default_reminder_interval)
+		return;
+
 	store->priv->default_reminder_interval = default_reminder_interval;
 
 	g_object_notify (G_OBJECT (store), "default-reminder-interval");
@@ -925,6 +931,9 @@ e_meeting_store_set_default_reminder_units (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (store->priv->default_reminder_units == default_reminder_units)
+		return;
+
 	store->priv->default_reminder_units = default_reminder_units;
 
 	g_object_notify (G_OBJECT (store), "default-reminder-units");
@@ -944,6 +953,9 @@ e_meeting_store_set_free_busy_template (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (g_strcmp0 (store->priv->fb_uri, free_busy_template) == 0)
+		return;
+
 	g_free (store->priv->fb_uri);
 	store->priv->fb_uri = g_strdup (free_busy_template);
 
@@ -964,6 +976,9 @@ e_meeting_store_set_timezone (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (store->priv->zone == timezone)
+		return;
+
 	store->priv->zone = timezone;
 
 	g_object_notify (G_OBJECT (store), "timezone");
@@ -983,6 +998,9 @@ e_meeting_store_set_week_start_day (EMeetingStore *store,
 {
 	g_return_if_fail (E_IS_MEETING_STORE (store));
 
+	if (store->priv->week_start_day == week_start_day)
+		return;
+
 	store->priv->week_start_day = week_start_day;
 
 	g_object_notify (G_OBJECT (store), "week-start-day");
diff --git a/calendar/gui/e-meeting-time-sel.c b/calendar/gui/e-meeting-time-sel.c
index a7a5294241..79acc1887a 100644
--- a/calendar/gui/e-meeting-time-sel.c
+++ b/calendar/gui/e-meeting-time-sel.c
@@ -1018,6 +1018,9 @@ e_meeting_time_selector_set_show_week_numbers (EMeetingTimeSelector *mts,
 {
 	g_return_if_fail (E_IS_MEETING_TIME_SELECTOR (mts));
 
+	if ((mts->priv->show_week_numbers ? 1 : 0) == (show_week_numbers ? 1 : 0))
+		return;
+
 	mts->priv->show_week_numbers = show_week_numbers;
 
 	g_object_notify (G_OBJECT (mts), "show-week-numbers");
@@ -1037,6 +1040,9 @@ e_meeting_time_selector_set_use_24_hour_format (EMeetingTimeSelector *mts,
 {
 	g_return_if_fail (E_IS_MEETING_TIME_SELECTOR (mts));
 
+	if ((mts->priv->use_24_hour_format ? 1 : 0) == (use_24_hour_format ? 1 : 0))
+		return;
+
 	mts->priv->use_24_hour_format = use_24_hour_format;
 
 	g_object_notify (G_OBJECT (mts), "use-24-hour-format");
@@ -1056,6 +1062,9 @@ e_meeting_time_selector_set_week_start_day (EMeetingTimeSelector *mts,
 {
 	g_return_if_fail (E_IS_MEETING_TIME_SELECTOR (mts));
 
+	if (mts->priv->week_start_day == week_start_day)
+		return;
+
 	mts->priv->week_start_day = week_start_day;
 
 	g_object_notify (G_OBJECT (mts), "week-start-day");
diff --git a/calendar/gui/e-timezone-entry.c b/calendar/gui/e-timezone-entry.c
index d8429b844d..41b40dcf3b 100644
--- a/calendar/gui/e-timezone-entry.c
+++ b/calendar/gui/e-timezone-entry.c
@@ -353,6 +353,9 @@ e_timezone_entry_set_timezone (ETimezoneEntry *timezone_entry,
 {
 	g_return_if_fail (E_IS_TIMEZONE_ENTRY (timezone_entry));
 
+	if (timezone_entry->priv->timezone == timezone)
+		return;
+
 	timezone_entry->priv->timezone = timezone;
 
 	timezone_entry_update_entry (timezone_entry);
diff --git a/calendar/gui/e-week-view-event-item.c b/calendar/gui/e-week-view-event-item.c
index c18ab8db57..13de066ce5 100644
--- a/calendar/gui/e-week-view-event-item.c
+++ b/calendar/gui/e-week-view-event-item.c
@@ -1192,6 +1192,9 @@ e_week_view_event_item_set_event_num (EWeekViewEventItem *event_item,
 {
 	g_return_if_fail (E_IS_WEEK_VIEW_EVENT_ITEM (event_item));
 
+	if (event_item->priv->event_num == event_num)
+		return;
+
 	event_item->priv->event_num = event_num;
 	gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (event_item));
 
@@ -1212,6 +1215,9 @@ e_week_view_event_item_set_span_num (EWeekViewEventItem *event_item,
 {
 	g_return_if_fail (E_IS_WEEK_VIEW_EVENT_ITEM (event_item));
 
+	if (event_item->priv->span_num == span_num)
+		return;
+
 	event_item->priv->span_num = span_num;
 	gnome_canvas_item_request_update (GNOME_CANVAS_ITEM (event_item));
 
diff --git a/calendar/gui/e-week-view-main-item.c b/calendar/gui/e-week-view-main-item.c
index 06ebf68dbe..edf21ccaf6 100644
--- a/calendar/gui/e-week-view-main-item.c
+++ b/calendar/gui/e-week-view-main-item.c
@@ -477,6 +477,9 @@ e_week_view_main_item_set_week_view (EWeekViewMainItem *main_item,
 	g_return_if_fail (E_IS_WEEK_VIEW_MAIN_ITEM (main_item));
 	g_return_if_fail (E_IS_WEEK_VIEW (week_view));
 
+	if (main_item->priv->week_view == week_view)
+		return;
+
 	if (main_item->priv->week_view != NULL)
 		g_object_unref (main_item->priv->week_view);
 
diff --git a/calendar/gui/e-week-view-titles-item.c b/calendar/gui/e-week-view-titles-item.c
index 40d7391679..0ad78e9cf7 100644
--- a/calendar/gui/e-week-view-titles-item.c
+++ b/calendar/gui/e-week-view-titles-item.c
@@ -302,6 +302,9 @@ e_week_view_titles_item_set_week_view (EWeekViewTitlesItem *titles_item,
 	g_return_if_fail (E_IS_WEEK_VIEW_TITLES_ITEM (titles_item));
 	g_return_if_fail (E_IS_WEEK_VIEW (week_view));
 
+	if (titles_item->priv->week_view == week_view)
+		return;
+
 	if (titles_item->priv->week_view != NULL)
 		g_object_unref (titles_item->priv->week_view);
 
diff --git a/calendar/gui/e-week-view.c b/calendar/gui/e-week-view.c
index ae9ca7a75e..613ab9e5b9 100644
--- a/calendar/gui/e-week-view.c
+++ b/calendar/gui/e-week-view.c
@@ -2033,7 +2033,7 @@ e_week_view_set_compress_weekend (EWeekView *week_view,
 
 	g_return_if_fail (E_IS_WEEK_VIEW (week_view));
 
-	if (week_view->compress_weekend == compress_weekend)
+	if ((week_view->compress_weekend ? 1 : 0) == (compress_weekend ? 1 : 0))
 		return;
 
 	week_view->compress_weekend = compress_weekend;
@@ -2079,7 +2079,7 @@ e_week_view_set_show_event_end_times (EWeekView *week_view,
 {
 	g_return_if_fail (E_IS_WEEK_VIEW (week_view));
 
-	if (week_view->show_event_end_times == show_event_end_times)
+	if ((week_view->show_event_end_times ? 1 : 0) == (show_event_end_times ? 1 : 0))
 		return;
 
 	week_view->show_event_end_times = show_event_end_times;
diff --git a/calendar/gui/gnome-cal.c b/calendar/gui/gnome-cal.c
index 7b737b69c0..7975d2752b 100644
--- a/calendar/gui/gnome-cal.c
+++ b/calendar/gui/gnome-cal.c
@@ -1840,6 +1840,9 @@ gnome_calendar_set_view (GnomeCalendar *gcal,
 
 	g_return_if_fail (GNOME_IS_CALENDAR (gcal));
 
+	if (gcal->priv->current_view_type == view_type)
+		return;
+
 	gcal->priv->current_view_type = view_type;
 	gnome_calendar_set_range_selected (gcal, FALSE);
 
@@ -1970,6 +1973,9 @@ gnome_calendar_set_date_navigator (GnomeCalendar *gcal,
 {
 	g_return_if_fail (GNOME_IS_CALENDAR (gcal));
 
+	if (gcal->priv->date_navigator == date_navigator)
+		return;
+
 	if (date_navigator != NULL) {
 		g_return_if_fail (E_IS_CALENDAR (date_navigator));
 		g_object_ref (date_navigator);
@@ -2000,6 +2006,9 @@ gnome_calendar_set_memo_table (GnomeCalendar *gcal,
 {
 	g_return_if_fail (GNOME_IS_CALENDAR (gcal));
 
+	if (gcal->priv->memo_table == memo_table)
+		return;
+
 	if (memo_table != NULL) {
 		g_return_if_fail (E_IS_MEMO_TABLE (memo_table));
 		g_object_ref (memo_table);
@@ -2027,6 +2036,9 @@ gnome_calendar_set_task_table (GnomeCalendar *gcal,
 {
 	g_return_if_fail (GNOME_IS_CALENDAR (gcal));
 
+	if (gcal->priv->task_table == task_table)
+		return;
+
 	if (task_table != NULL) {
 		g_return_if_fail (E_IS_TASK_TABLE (task_table));
 		g_object_ref (task_table);