1 /*
2 * (c) 2004 by Kalle Wallin <kaw@linux.se>
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 */
19 #include "i18n.h"
20 #include "mpdclient.h"
21 #include "options.h"
22 #include "conf.h"
23 #include "command.h"
24 #include "screen.h"
25 #include "screen_utils.h"
26 #include "gcc.h"
28 #include <errno.h>
29 #include <stdlib.h>
30 #include <string.h>
31 #include <glib.h>
32 #include <ncurses.h>
34 #define STATIC_ITEMS 0
35 #define STATIC_SUB_ITEMS 1
36 #define BUFSIZE 256
38 #define LIST_ITEM_APPLY() ((unsigned)command_list_length)
39 #define LIST_ITEM_SAVE() (LIST_ITEM_APPLY()+1)
40 #define LIST_LENGTH() (LIST_ITEM_SAVE()+1)
42 #define LIST_ITEM_SAVE_LABEL _("===> Apply & Save key bindings ")
43 #define LIST_ITEM_APPLY_LABEL _("===> Apply key bindings ")
46 static list_window_t *lw = NULL;
47 static unsigned command_list_length = 0;
48 static command_definition_t *cmds = NULL;
50 static int subcmd = -1;
51 static unsigned subcmd_length = 0;
52 static unsigned subcmd_addpos = 0;
54 static int
55 keybindings_changed(void)
56 {
57 command_definition_t *orginal_cmds = get_command_definitions();
58 size_t size = command_list_length * sizeof(command_definition_t);
60 return memcmp(orginal_cmds, cmds, size);
61 }
63 static void
64 apply_keys(void)
65 {
66 if (keybindings_changed()) {
67 command_definition_t *orginal_cmds = get_command_definitions();
68 size_t size = command_list_length * sizeof(command_definition_t);
70 memcpy(orginal_cmds, cmds, size);
71 screen_status_printf(_("You have new key bindings!"));
72 } else
73 screen_status_printf(_("Keybindings unchanged."));
74 }
76 static int
77 save_keys(void)
78 {
79 FILE *f;
80 char *filename;
82 if (check_user_conf_dir()) {
83 screen_status_printf(_("Error: Unable to create direcory ~/.ncmpc - %s"),
84 strerror(errno));
85 screen_bell();
86 return -1;
87 }
89 filename = get_user_key_binding_filename();
91 if ((f = fopen(filename,"w")) == NULL) {
92 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
93 screen_bell();
94 g_free(filename);
95 return -1;
96 }
98 if (write_key_bindings(f, KEYDEF_WRITE_HEADER))
99 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
100 else
101 screen_status_printf(_("Wrote %s"), filename);
103 g_free(filename);
104 return fclose(f);
105 }
107 static void
108 check_subcmd_length(void)
109 {
110 subcmd_length = 0;
111 while (subcmd_length < MAX_COMMAND_KEYS &&
112 cmds[subcmd].keys[subcmd_length] > 0)
113 ++subcmd_length;
115 if (subcmd_length < MAX_COMMAND_KEYS) {
116 subcmd_addpos = subcmd_length;
117 subcmd_length++;
118 } else
119 subcmd_addpos = 0;
120 subcmd_length += STATIC_SUB_ITEMS;
121 }
123 static void
124 keydef_paint(void);
126 static void
127 keydef_repaint(void)
128 {
129 keydef_paint();
130 wrefresh(lw->w);
131 }
133 static void
134 delete_key(int cmd_index, int key_index)
135 {
136 int i = key_index+1;
138 screen_status_printf(_("Deleted"));
139 while (i < MAX_COMMAND_KEYS && cmds[cmd_index].keys[i])
140 cmds[cmd_index].keys[key_index++] = cmds[cmd_index].keys[i++];
141 cmds[cmd_index].keys[key_index] = 0;
142 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
143 check_subcmd_length();
145 /* repaint */
146 keydef_repaint();
148 /* update key conflict flags */
149 check_key_bindings(cmds, NULL, 0);
150 }
152 static void
153 assign_new_key(WINDOW *w, int cmd_index, int key_index)
154 {
155 int key;
156 char *buf;
157 command_t cmd;
159 buf = g_strdup_printf(_("Enter new key for %s: "), cmds[cmd_index].name);
160 key = screen_getch(w, buf);
161 g_free(buf);
163 if (key==ERR) {
164 screen_status_printf(_("Aborted!"));
165 return;
166 }
168 cmd = find_key_command(key, cmds);
169 if (cmd != CMD_NONE && cmd != cmds[cmd_index].command) {
170 screen_status_printf(_("Error: key %s is already used for %s"),
171 key2str(key),
172 get_key_command_name(cmd));
173 screen_bell();
174 return;
175 }
177 cmds[cmd_index].keys[key_index] = key;
178 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
180 screen_status_printf(_("Assigned %s to %s"),
181 key2str(key),cmds[cmd_index].name);
182 check_subcmd_length();
184 /* repaint */
185 keydef_repaint();
187 /* update key conflict flags */
188 check_key_bindings(cmds, NULL, 0);
189 }
191 static const char *
192 list_callback(unsigned idx, int *highlight, mpd_unused void *data)
193 {
194 static char buf[BUFSIZE];
196 if (subcmd < 0) {
197 if (idx < (unsigned)command_list_length) {
198 if (cmds[idx].flags & COMMAND_KEY_CONFLICT)
199 *highlight = 1;
200 return cmds[idx].name;
201 } else if (idx == LIST_ITEM_APPLY())
202 return LIST_ITEM_APPLY_LABEL;
203 else if (idx == LIST_ITEM_SAVE())
204 return LIST_ITEM_SAVE_LABEL;
205 } else {
206 if (idx == 0)
207 return "[..]";
208 idx--;
209 if (idx < MAX_COMMAND_KEYS && cmds[subcmd].keys[idx] > 0) {
210 g_snprintf(buf,
211 BUFSIZE, "%d. %-20s (%d) ",
212 idx + 1,
213 key2str(cmds[subcmd].keys[idx]),
214 cmds[subcmd].keys[idx]);
215 return buf;
216 } else if (idx == subcmd_addpos) {
217 g_snprintf(buf, BUFSIZE, _("%d. Add new key "), idx + 1);
218 return buf;
219 }
220 }
222 return NULL;
223 }
225 static void
226 keydef_init(WINDOW *w, int cols, int rows)
227 {
228 lw = list_window_init(w, cols, rows);
229 }
231 static void
232 keydef_resize(int cols, int rows)
233 {
234 lw->cols = cols;
235 lw->rows = rows;
236 }
238 static void
239 keydef_exit(void)
240 {
241 list_window_free(lw);
242 if (cmds)
243 g_free(cmds);
244 cmds = NULL;
245 lw = NULL;
246 }
248 static void
249 keydef_open(mpd_unused mpdclient_t *c)
250 {
251 if (cmds == NULL) {
252 command_definition_t *current_cmds = get_command_definitions();
253 size_t cmds_size;
255 command_list_length = 0;
256 while (current_cmds[command_list_length].name)
257 command_list_length++;
259 cmds_size = (command_list_length+1) * sizeof(command_definition_t);
260 cmds = g_malloc0(cmds_size);
261 memcpy(cmds, current_cmds, cmds_size);
262 command_list_length += STATIC_ITEMS;
263 screen_status_printf(_("Welcome to the key editor!"));
264 }
266 subcmd = -1;
267 list_window_check_selected(lw, LIST_LENGTH());
268 }
270 static void
271 keydef_close(void)
272 {
273 if (cmds && !keybindings_changed()) {
274 g_free(cmds);
275 cmds = NULL;
276 } else
277 screen_status_printf(_("Note: Did you forget to \'Apply\' your changes?"));
278 }
280 static const char *
281 keydef_title(char *str, size_t size)
282 {
283 if (subcmd < 0)
284 return _("Edit key bindings");
286 g_snprintf(str, size, _("Edit keys for %s"), cmds[subcmd].name);
287 return str;
288 }
290 static void
291 keydef_paint(void)
292 {
293 list_window_paint(lw, list_callback, NULL);
294 }
296 static int
297 keydef_cmd(mpd_unused mpdclient_t *c, command_t cmd)
298 {
299 int length = LIST_LENGTH();
301 if (subcmd >= 0)
302 length = subcmd_length;
304 if (list_window_cmd(lw, length, cmd)) {
305 keydef_repaint();
306 return 1;
307 }
309 switch(cmd) {
310 case CMD_PLAY:
311 if (subcmd < 0) {
312 if (lw->selected == LIST_ITEM_APPLY())
313 apply_keys();
314 else if (lw->selected == LIST_ITEM_SAVE()) {
315 apply_keys();
316 save_keys();
317 } else {
318 subcmd = lw->selected;
319 lw->selected=0;
320 check_subcmd_length();
322 keydef_repaint();
323 }
324 } else {
325 if (lw->selected == 0) { /* up */
326 lw->selected = subcmd;
327 subcmd = -1;
329 keydef_repaint();
330 } else
331 assign_new_key(screen.status_window.w,
332 subcmd,
333 lw->selected - STATIC_SUB_ITEMS);
334 }
335 return 1;
336 case CMD_DELETE:
337 if (subcmd >= 0 && lw->selected >= STATIC_SUB_ITEMS)
338 delete_key(subcmd, lw->selected - STATIC_SUB_ITEMS);
339 return 1;
340 break;
341 case CMD_SAVE_PLAYLIST:
342 apply_keys();
343 save_keys();
344 break;
345 case CMD_LIST_FIND:
346 case CMD_LIST_RFIND:
347 case CMD_LIST_FIND_NEXT:
348 case CMD_LIST_RFIND_NEXT:
349 screen_find(lw, length,
350 cmd, list_callback, NULL);
351 keydef_repaint();
352 return 1;
354 default:
355 break;
356 }
358 return 0;
359 }
361 const struct screen_functions screen_keydef = {
362 .init = keydef_init,
363 .exit = keydef_exit,
364 .open = keydef_open,
365 .close = keydef_close,
366 .resize = keydef_resize,
367 .paint = keydef_paint,
368 .cmd = keydef_cmd,
369 .get_title = keydef_title,
370 };