summaryrefslogtreecommitdiff
path: root/src/todo.c
blob: 385acc7f8fc33bfb95dca0f36a6386ca34dfaab0 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
/*	$calcurse: todo.c,v 1.3 2006/08/31 18:47:54 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, "");
	getstring(swin, colr, todo_input, 0, 1);
	if (strlen(todo_input) != 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 = todolist;
	int n = 1;
	
	for (;;) {
		if (o == i) break;
		o = o->next;
		n++;
	}
	return n; 
}

/* 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;
}