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/* $calcurse: todo.c,v 1.7 2006/12/13 09:32:22 culot Exp $ */
/*
* Calcurse - text-based organizer
* Copyright (c) 2004-2006 Frederic Culot
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Send your feedback or comments to : calcurse@culot.org
* Calcurse home page : http://culot.org/calcurse
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "vars.h"
#include "utils.h"
#include "i18n.h"
#include "todo.h"
struct todo_s *todolist;
/* Request user to enter a new todo item. */
int todo_new_item(int total, int colr)
{
int ch = 0;
char *mesg = _("Enter the new ToDo item : ");
char *mesg_id =
_("Enter the ToDo priority [1 (highest) - 9 (lowest)] :");
char todo_input[MAX_LENGTH] = "";
status_mesg(mesg, "");
if (getstring(swin, colr, todo_input, MAX_LENGTH, 0, 1) == 0) {
while ( (ch < '1') || (ch > '9') ) {
status_mesg(mesg_id, "");
ch = wgetch(swin);
}
todo_add(todo_input, ch - '0');
total++;
}
return total;
}
/* Add an item in the todo linked list. */
struct todo_s *todo_add(char *mesg, int id)
{
struct todo_s *o, **i;
o = (struct todo_s *) malloc(sizeof(struct todo_s));
o->mesg = (char *) malloc(strlen(mesg) + 1);
strcpy(o->mesg, mesg);
o->id = id;
i = &todolist;
for (;;) {
if (*i == 0 || (*i)->id > id) {
o->next = *i;
*i = o;
break;
}
i = &(*i)->next;
}
return o;
}
/* Delete an item from the todo linked list. */
void todo_delete_bynum(unsigned num)
{
unsigned n;
struct todo_s *i, **iptr;
n = 0;
iptr = &todolist;
for (i = todolist; i != 0; i = i->next) {
if (n == num) {
*iptr = i->next;
free(i->mesg);
free(i);
return;
}
iptr = &i->next;
n++;
}
/* NOTREACHED */
fputs(_("FATAL ERROR in todo_delete_bynum: no such todo\n"), stderr);
exit(EXIT_FAILURE);
}
/* Returns a structure containing the selected item. */
struct todo_s *todo_get_item(int item_number)
{
struct todo_s *o;
int i;
o = todolist;
for (i = 1; i < item_number; i++) {
o = o->next;
}
return o;
}
/*
* Returns the position into the linked list corresponding to the
* given todo_s item.
*/
int todo_get_position(struct todo_s *i)
{
struct todo_s *o;
int n = 1, found = 0;
for (o = todolist; o; o = o->next) {
if (o == i) {
found = 1;
break;
}
n++;
}
if (found) {
return n;
} else {
fputs(_("FATAL ERROR in todo_get_position: todo not found\n"),
stderr);
exit(EXIT_FAILURE);
}
}
/* Change an item priority by pressing '+' or '-' inside TODO panel. */
int todo_chg_priority(int action, int item_num)
{
struct todo_s *backup;
char backup_mesg[MAX_LENGTH];
int backup_id;
int do_chg = 1, new_position;
backup = todo_get_item(item_num);
strncpy(backup_mesg, backup->mesg, strlen(backup->mesg) + 1);
backup_id = backup->id;
if (action == '+') {
(backup_id > 1) ? backup_id-- : do_chg--;
} else if (action == '-') {
(backup_id < 9) ? backup_id++ : do_chg--;
} else { /* NOTREACHED */
fputs(_("FATAL ERROR in todo_chg_priority: no such action\n"),
stderr);
}
if (do_chg) {
todo_delete_bynum(item_num - 1);
backup = todo_add(backup_mesg, backup_id);
new_position = todo_get_position(backup);
} else {
new_position = item_num;
}
return new_position;
}
/* Edit the description of an already existing todo item. */
void todo_edit_item(int item_num, int colr)
{
struct todo_s *i;
char *mesg = _("Enter the new ToDo description :");
status_mesg(mesg, "");
i = todo_get_item(item_num);
updatestring(swin, colr, &i->mesg, 0, 1);
}
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