Make automatic selection of appointments/events smarter

Keep item selection when an item is moved (e.g. by changing the start
time or description).

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>

src/calcurse.c

@@ -48,11 +48,15 @@ int count, reg;
  */
 static void do_storage(int day_changed)
 {
+	struct day_item *day = ui_day_selitem();
+
 	day_process_storage(ui_calendar_get_slctd_day(), day_changed);
 	ui_day_load_items();
 
 	if (day_changed)
 		ui_day_sel_reset();
+	else if (day)
+		ui_day_set_selitem(day);
 }
 
 static inline void key_generic_change_view(void)

src/calcurse.h

@@ -772,6 +772,7 @@ int day_check_if_item(struct date);
 unsigned day_chk_busy_slices(struct date, int, int *);
 struct day_item *day_cut_item(long, int);
 int day_paste_item(struct day_item *, long);
+int day_get_position(struct day_item *);
 struct day_item *day_get_item(int);
 unsigned day_item_count(int);
 void day_edit_note(struct day_item *, const char *);
@@ -1042,6 +1043,8 @@ void todo_init_list(void);
 void todo_free_list(void);
 
 /* ui-day.c */
+struct day_item *ui_day_selitem(void);
+void ui_day_set_selitem(struct day_item *);
 void ui_day_item_add(void);
 void ui_day_item_delete(unsigned);
 void ui_day_item_edit(void);

src/day.c

@@ -700,6 +700,21 @@ int day_paste_item(struct day_item *p, long date)
 	return p->type;
 }
 
+/* Returns the position corresponding to a given item. */
+int day_get_position(struct day_item *needle)
+{
+	int n = 0;
+
+	VECTOR_FOREACH(&day_items, n) {
+		struct day_item *p = VECTOR_NTH(&day_items, n);
+		/* Compare pointers. */
+		if (p->item.ev == needle->item.ev)
+			return n;
+	}
+
+	return -1;
+}
+
 /* Returns a structure containing the selected item. */
 struct day_item *day_get_item(int item_number)
 {

src/ui-day.c

@@ -38,6 +38,21 @@
 
 struct day_item day_cut[38] = { {0, 0, {NULL}} };
 
+struct day_item *ui_day_selitem(void)
+{
+	if (day_item_count(0) <= 0)
+		return NULL;
+
+	return day_get_item(listbox_get_sel(&lb_apt));
+}
+
+void ui_day_set_selitem(struct day_item *day)
+{
+	int n = day_get_position(day);
+	if (n >= 0)
+		listbox_set_sel(&lb_apt, n);
+}
+
 /* Request the user to enter a new time. */
 static int day_edit_time(int time, unsigned *new_hour,
 			 unsigned *new_minute)