summaryrefslogtreecommitdiff
path: root/src/todo.c
blob: 20a6e5af7c9af248ec5922ade1e23611d96f9505 (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
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
/*	$calcurse: todo.c,v 1.20 2008/04/04 21:31:20 culot Exp $	*/

/*
 * Calcurse - text-based organizer
 * Copyright (c) 2004-2007 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 <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "utils.h"
#include "custom.h"
#include "i18n.h"
#include "todo.h"

struct todo_s  *todolist;
static int	hilt = 0;
static int	todos = 0;
static int	first = 1;
static char    *msgsav;

/* Returns a structure containing the selected item. */
static 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;
}

/* Sets which todo is highlighted. */
void
todo_hilt_set(int highlighted)
{
	hilt = highlighted;
}

void
todo_hilt_decrease(void)
{
	hilt--;
}

void
todo_hilt_increase(void)
{
	hilt++;
}

/* 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(void)
{
	first++;
}

void
todo_first_decrease(void)
{
	first--;
}

/* 
 * 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);
}

/* Request user to enter a new todo item. */
void 
todo_new_item(void)
{
	int ch = 0;
	char *mesg = _("Enter the new ToDo item : ");
	char *mesg_id = 
		_("Enter the ToDo priority [1 (highest) - 9 (lowest)] :");
	char todo_input[BUFSIZ] = "";

	status_mesg(mesg, "");
	if (getstring(win[STA].p, todo_input, BUFSIZ, 0, 1) == 
		GETSTRING_VALID) {
		while ( (ch < '1') || (ch > '9') ) {
			status_mesg(mesg_id, "");
			ch = wgetch(win[STA].p);
		}
		todo_add(todo_input, ch - '0', NULL);
		todos++;
	}
}

/* Add an item in the todo linked list. */
struct todo_s *
todo_add(char *mesg, int id, char *note)
{
	struct todo_s *o, **i;
	o = (struct todo_s *) malloc(sizeof(struct todo_s));
	o->mesg = (char *) malloc(strlen(mesg) + 1);
	strncpy(o->mesg, mesg, strlen(mesg) + 1);
	o->id = id;
	o->note = (note != NULL && note[0] != '\0') ? strdup(note) : NULL;
	i = &todolist;
	for (;;) {
		if (*i == 0 || (*i)->id > id) {
			o->next = *i;
			*i = o;
			break;
		}
		i = &(*i)->next;
	}
	return o;
}

/* Delete a note previously attached to a todo item. */
static void 
todo_delete_note_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) {
			if (i->note == NULL)
				ierror(
				   _("FATAL ERROR in todo_delete_note_bynum: "
				   "no note attached\n"), IERROR_FATAL);
			erase_note(&i->note, ERASE_FORCE_ONLY_NOTE);
			return;
		}
		iptr = &i->next;
		n++;
	}
	/* NOTREACHED */
	ierror(_("FATAL ERROR in todo_delete_note_bynum: no such todo\n"),
	    IERROR_FATAL);
	exit(EXIT_FAILURE);
}

/* Delete an item from the todo linked list. */
static void 
todo_delete_bynum(unsigned num, erase_flag_e flag)
{
	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);
			if (i->note != NULL)
				erase_note(&i->note, flag);
			free(i);
			return;
		}
		iptr = &i->next;
		n++;
	}
	/* NOTREACHED */
	ierror(_("FATAL ERROR in todo_delete_bynum: no such todo\n"), 
	    IERROR_FATAL);
	exit(EXIT_FAILURE);
}

/* Delete an item from the ToDo list. */
void 
todo_delete(conf_t *conf)
{
	char *choices = "[y/n] ";
	char *del_todo_str = _("Do you really want to delete this task ?");
	char *erase_warning =
		_("This item has a note attached to it. "
		  "Delete (t)odo or just its (n)ote ?");
	char *erase_choice =
		_("[t/n] ");
	bool go_for_todo_del = false;
	int answer = 0, has_note;
	
	if (conf->confirm_delete) {
		status_mesg(del_todo_str, choices);
		answer = wgetch(win[STA].p);
		if ( (answer == 'y') && (todos > 0) ) {
			go_for_todo_del = true;
		} else {
			erase_status_bar();
			return;
		}
	} else 
		if (todos > 0) 
			go_for_todo_del = true;

	if (go_for_todo_del == false) {
		erase_status_bar();
		return;
	}

	answer = 0;
	has_note = (todo_get_item(hilt)->note != NULL) ? 1 : 0;
	if (has_note == 0)
		answer = 't';
	
	while (answer != 't' && answer != 'n' && answer != ESCAPE) {
		status_mesg(erase_warning, erase_choice);
		answer = wgetch(win[STA].p);
	}
	
	switch (answer) {
	case 't':
		todo_delete_bynum(hilt - 1, ERASE_FORCE);
		todos--;
		if (hilt > 1) 
			hilt--;
		if (todos == 0) 
			hilt = 0;
		if (hilt - first < 0)
			first--;
		break;
	case 'n':
		todo_delete_note_bynum(hilt - 1);
		break;
	default:
		erase_status_bar();
		return;
	}
}

/* 
 * Returns the position into the linked list corresponding to the
 * given todo_s item.
 */
static 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. */
void
todo_chg_priority(int action)
{
	struct todo_s *backup;
	char backup_mesg[BUFSIZ];
	int backup_id;
	char backup_note[NOTESIZ + 1];
	int do_chg = 1;

	backup = todo_get_item(hilt);
	strncpy(backup_mesg, backup->mesg, strlen(backup->mesg) + 1);
	backup_id = backup->id;
	if (backup->note)
		strncpy(backup_note, backup->note, NOTESIZ + 1);
	else
		backup_note[0] = '\0';
	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(hilt - 1, ERASE_FORCE_KEEP_NOTE);
		backup = todo_add(backup_mesg, backup_id, backup_note);
		hilt = todo_get_position(backup);	
	} 
}

/* Edit the description of an already existing todo item. */
void 
todo_edit_item(void)
{
	struct todo_s *i;
	char *mesg = _("Enter the new ToDo description :");	

	status_mesg(mesg, "");
	i = todo_get_item(hilt);
	updatestring(win[STA].p, &i->mesg, 0, 1);
}

/* Display todo items in the corresponding panel. */
static void
display_todo_item(int incolor, char *msg, int prio, int note, int len, int y,
    int x)
{
	WINDOW *w;
	int ch_note;
	char buf[len];

	w = win[TOD].p;
	ch_note = (note) ? '>' : '.';
	if (incolor == 0) 
		custom_apply_attr(w, ATTR_HIGHEST);
	if (strlen(msg) < len)
		mvwprintw(w, y, x, "%d%c %s", prio, ch_note, msg);
	else {
		strncpy(buf, msg, len - 1);
		buf[len - 1] = '\0';
		mvwprintw(w, y, x, "%d%c %s...", prio, ch_note, buf);
	}
	if (incolor == 0) 
		custom_remove_attr(w, ATTR_HIGHEST);
}

/* Updates the ToDo panel. */
void 
todo_update_panel(window_t *wintod, int which_pan)
{
	struct todo_s *i;
	int len = wintod->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 = wintod->h - 4;
	int incolor = -1;

	/* Print todo item in the panel. */
	erase_window_part(win[TOD].p, 1, title_lines, wintod->w - 2, 
	    wintod->h - 2);
	for (i = todolist; i != 0; i = i->next) {
		num_todo++;
		t_realpos = num_todo - first;
		incolor = num_todo - hilt;
		if (incolor == 0) 
			msgsav = i->mesg; 
		if (t_realpos >= 0 && t_realpos < max_items) {
			display_todo_item(incolor, i->mesg, i->id,
			    (i->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);
		bool hilt_bar = (which_pan == TOD) ? true : false;
		int sbar_top = highend + title_lines;
	
		if ((sbar_top + sbar_length) > wintod->h - 1)
			sbar_length = wintod->h - 1 - sbar_top;
		draw_scrollbar(win[TOD].p, sbar_top, wintod->w - 2, 
	    	    sbar_length, title_lines, wintod->h - 1, hilt_bar);
	}
	
	wnoutrefresh(win[TOD].p);
}

/* Attach a note to a todo */
void 
todo_edit_note(char *editor)
{
	struct todo_s *i;
	char fullname[BUFSIZ];
	char *filename;

	i = todo_get_item(hilt);
	if (i->note == NULL) {
		if ((filename = new_tempfile(path_notes, NOTESIZ))
		    != NULL)
			i->note = filename;
		else
			return;
	}
	snprintf(fullname, BUFSIZ, "%s%s", path_notes, i->note);
	wins_launch_external(fullname, editor);
}

/* View a note previously attached to a todo */
void 
todo_view_note(char *pager)
{
	struct todo_s *i;
	char fullname[BUFSIZ];

	i = todo_get_item(hilt);
	if (i->note == NULL)
		return;
	snprintf(fullname, BUFSIZ, "%s%s", path_notes, i->note);
	wins_launch_external(fullname, pager);
}