/*
* Calcurse - text-based organizer
*
* Copyright (c) 2004-2012 calcurse Development Team <misc@calcurse.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Send your feedback or comments to : misc@calcurse.org
* Calcurse home page : http://calcurse.org
*
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "calcurse.h"
llist_t todolist;
static int hilt = 0;
static int todos = 0;
static int first = 1;
static char *msgsav;
/* Returns a structure containing the selected item. */
struct todo *todo_get_item(int item_number)
{
return LLIST_GET_DATA(LLIST_NTH(&todolist, item_number - 1));
}
/* Sets which todo is highlighted. */
void todo_hilt_set(int highlighted)
{
hilt = highlighted;
}
void todo_hilt_decrease(int n)
{
hilt -= n;
}
void todo_hilt_increase(int n)
{
hilt += n;
}
/* Return which todo is highlighted. */
int todo_hilt(void)
{
return hilt;
}
/* Return the number of todos. */
int todo_nb(void)
{
return todos;
}
/* Set the number of todos. */
void todo_set_nb(int nb)
{
todos = nb;
}
/* Set which one is the first todo to be displayed. */
void todo_set_first(int nb)
{
first = nb;
}
void todo_first_increase(int n)
{
first += n;
}
void todo_first_decrease(int n)
{
first -= n;
}
/*
* Return the position of the hilghlighted item, relative to the first one
* displayed.
*/
int todo_hilt_pos(void)
{
return hilt - first;
}
/* Return the last visited todo. */
char *todo_saved_mesg(void)
{
return msgsav;
}
static int todo_cmp_id(struct todo *a, struct todo *b)
{
/*
* As of version 2.6, todo items can have a negative id, which means they
* were completed. To keep them sorted, we need to consider the absolute id
* value.
*/
int abs_a = abs(a->id);
int abs_b = abs(b->id);
return abs_a < abs_b ? -1 : (abs_a == abs_b ? 0 : 1);
}
/*
* Add an item in the todo linked list.
*/
struct todo *todo_add(char *mesg, int id, char *note)
{
struct todo *todo;
todo = mem_malloc(sizeof(struct todo));
todo->mesg = mem_strdup(mesg);
todo->id = id;
todo->note = (note != NULL && note[0] != '\0') ? mem_strdup(note) : NULL;
LLIST_ADD_SORTED(&todolist, todo, todo_cmp_id);
return todo;
}
void todo_write(struct todo *todo, FILE * f)
{
if (todo->note)
fprintf(f, "[%d]>%s %s\n", todo->id, todo->note, todo->mesg);
else
fprintf(f, "[%d] %s\n", todo->id, todo->mesg);
}
/* Delete a note previously attached to a todo item. */
void todo_delete_note_bynum(unsigned num)
{
llist_item_t *i = LLIST_NTH(&todolist, num);
if (!i)
EXIT(_("no such todo"));
struct todo *todo = LLIST_TS_GET_DATA(i);
if (!todo->note)
EXIT(_("no note attached"));
erase_note(&todo->note);
}
/* Delete an item from the todo linked list. */
void todo_delete(struct todo *todo)
{
llist_item_t *i = LLIST_FIND_FIRST(&todolist, todo, NULL);
if (!i)
EXIT(_("no such todo"));
LLIST_REMOVE(&todolist, i);
mem_free(todo->mesg);
erase_note(&todo->note);
mem_free(todo);
}
/*
* Flag a todo item (for now on, only the 'completed' state is available).
* Internally, a completed item keeps its priority, but it becomes negative.
* This way, it is easy to retrive its original priority if the user decides
* that in fact it was not completed.
*/
void todo_flag(struct todo *t)
{
t->id = -t->id;
}
/*
* Returns the position into the linked list corresponding to the
* given todo item.
*/
static int todo_get_position(struct todo *needle)
{
llist_item_t *i;
int n = 0;
LLIST_FOREACH(&todolist, i) {
n++;
if (LLIST_TS_GET_DATA(i) == needle)
return n;
}
EXIT(_("todo not found"));
return -1; /* avoid compiler warnings */
}
/* Change an item priority by pressing '+' or '-' inside TODO panel. */
void todo_chg_priority(struct todo *backup, int action)
{
char backup_mesg[BUFSIZ];
int backup_id;
char backup_note[MAX_NOTESIZ + 1];
strncpy(backup_mesg, backup->mesg, strlen(backup->mesg) + 1);
backup_id = backup->id;
if (backup->note)
strncpy(backup_note, backup->note, MAX_NOTESIZ + 1);
else
backup_note[0] = '\0';
switch (action) {
case KEY_RAISE_PRIORITY:
if (backup_id > 1)
backup_id--;
else
return;
break;
case KEY_LOWER_PRIORITY:
if (backup_id > 0 && backup_id < 9)
backup_id++;
else
return;
break;
default:
EXIT(_("no such action"));
/* NOTREACHED */
}
todo_delete(todo_get_item(hilt));
backup = todo_add(backup_mesg, backup_id, backup_note);
hilt = todo_get_position(backup);
}
/* Display todo items in the corresponding panel. */
static void
display_todo_item(int incolor, char *msg, int prio, int note, int width, int y,
int x)
{
WINDOW *w;
int ch_note;
char buf[width * UTF8_MAXLEN], priostr[2];
int i;
w = win[TOD].p;
ch_note = (note) ? '>' : '.';
if (prio > 0)
snprintf(priostr, sizeof priostr, "%d", prio);
else
strncpy(priostr, "X", sizeof priostr);
if (incolor == 0)
custom_apply_attr(w, ATTR_HIGHEST);
if (utf8_strwidth(msg) < width)
mvwprintw(w, y, x, "%s%c %s", priostr, ch_note, msg);
else {
for (i = 0; msg[i] && width > 0; i++) {
if (!UTF8_ISCONT(msg[i]))
width -= utf8_width(&msg[i]);
buf[i] = msg[i];
}
if (i)
buf[i - 1] = 0;
else
buf[0] = 0;
mvwprintw(w, y, x, "%s%c %s...", priostr, ch_note, buf);
}
if (incolor == 0)
custom_remove_attr(w, ATTR_HIGHEST);
}
/* Updates the ToDo panel. */
void todo_update_panel(int which_pan)
{
llist_item_t *i;
int len = win[TOD].w - 8;
int num_todo = 0;
int y_offset = 3, x_offset = 1;
int t_realpos = -1;
int title_lines = 3;
int todo_lines = 1;
int max_items = win[TOD].h - 4;
int incolor = -1;
/* Print todo item in the panel. */
erase_window_part(win[TOD].p, 1, title_lines, win[TOD].w - 2, win[TOD].h - 2);
LLIST_FOREACH(&todolist, i) {
struct todo *todo = LLIST_TS_GET_DATA(i);
num_todo++;
t_realpos = num_todo - first;
incolor = (which_pan == TOD) ? num_todo - hilt : num_todo;
if (incolor == 0)
msgsav = todo->mesg;
if (t_realpos >= 0 && t_realpos < max_items) {
display_todo_item(incolor, todo->mesg, todo->id,
(todo->note != NULL) ? 1 : 0, len, y_offset, x_offset);
y_offset = y_offset + todo_lines;
}
}
/* Draw the scrollbar if necessary. */
if (todos > max_items) {
float ratio = ((float)max_items) / ((float)todos);
int sbar_length = (int)(ratio * (max_items + 1));
int highend = (int)(ratio * first);
unsigned hilt_bar = (which_pan == TOD) ? 1 : 0;
int sbar_top = highend + title_lines;
if ((sbar_top + sbar_length) > win[TOD].h - 1)
sbar_length = win[TOD].h - 1 - sbar_top;
draw_scrollbar(win[TOD].p, sbar_top, win[TOD].w - 2,
sbar_length, title_lines, win[TOD].h - 1, hilt_bar);
}
wnoutrefresh(win[TOD].p);
}
/* Attach a note to a todo */
void todo_edit_note(struct todo *i, const char *editor)
{
edit_note(&i->note, editor);
}
/* View a note previously attached to a todo */
void todo_view_note(struct todo *i, const char *pager)
{
view_note(i->note, pager);
}
static void todo_free(struct todo *todo)
{
mem_free(todo->mesg);
erase_note(&todo->note);
mem_free(todo);
}
void todo_init_list(void)
{
LLIST_INIT(&todolist);
}
void todo_free_list(void)
{
LLIST_FREE_INNER(&todolist, todo_free);
LLIST_FREE(&todolist);
}
