a37d27d2a0dfb2eda684beef648c30782823e1b5
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 "ncmpc.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(mpdclient_t *c);
126 static void
127 keydef_repaint(void)
128 {
129 keydef_paint(NULL);
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 == KEY_RESIZE)
164 screen_resize();
166 if (key==ERR) {
167 screen_status_printf(_("Aborted!"));
168 return;
169 }
171 cmd = find_key_command(key, cmds);
172 if (cmd != CMD_NONE && cmd != cmds[cmd_index].command) {
173 screen_status_printf(_("Error: key %s is already used for %s"),
174 key2str(key),
175 get_key_command_name(cmd));
176 screen_bell();
177 return;
178 }
180 cmds[cmd_index].keys[key_index] = key;
181 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
183 screen_status_printf(_("Assigned %s to %s"),
184 key2str(key),cmds[cmd_index].name);
185 check_subcmd_length();
187 /* repaint */
188 keydef_repaint();
190 /* update key conflict flags */
191 check_key_bindings(cmds, NULL, 0);
192 }
194 static const char *
195 list_callback(unsigned idx, int *highlight, mpd_unused void *data)
196 {
197 static char buf[BUFSIZE];
199 if (subcmd < 0) {
200 if (idx < (unsigned)command_list_length) {
201 if (cmds[idx].flags & COMMAND_KEY_CONFLICT)
202 *highlight = 1;
203 return cmds[idx].name;
204 } else if (idx == LIST_ITEM_APPLY())
205 return LIST_ITEM_APPLY_LABEL;
206 else if (idx == LIST_ITEM_SAVE())
207 return LIST_ITEM_SAVE_LABEL;
208 } else {
209 if (idx == 0)
210 return "[..]";
211 idx--;
212 if (idx < MAX_COMMAND_KEYS && cmds[subcmd].keys[idx] > 0) {
213 g_snprintf(buf,
214 BUFSIZE, "%d. %-20s (%d) ",
215 idx + 1,
216 key2str(cmds[subcmd].keys[idx]),
217 cmds[subcmd].keys[idx]);
218 return buf;
219 } else if (idx == subcmd_addpos) {
220 g_snprintf(buf, BUFSIZE, _("%d. Add new key "), idx + 1);
221 return buf;
222 }
223 }
225 return NULL;
226 }
228 static void
229 keydef_init(WINDOW *w, int cols, int rows)
230 {
231 lw = list_window_init(w, cols, rows);
232 }
234 static void
235 keydef_resize(int cols, int rows)
236 {
237 lw->cols = cols;
238 lw->rows = rows;
239 }
241 static void
242 keydef_exit(void)
243 {
244 list_window_free(lw);
245 if (cmds)
246 g_free(cmds);
247 cmds = NULL;
248 lw = NULL;
249 }
251 static void
252 keydef_open(mpd_unused screen_t *screen, mpd_unused mpdclient_t *c)
253 {
254 if (cmds == NULL) {
255 command_definition_t *current_cmds = get_command_definitions();
256 size_t cmds_size;
258 command_list_length = 0;
259 while (current_cmds[command_list_length].name)
260 command_list_length++;
262 cmds_size = (command_list_length+1) * sizeof(command_definition_t);
263 cmds = g_malloc0(cmds_size);
264 memcpy(cmds, current_cmds, cmds_size);
265 command_list_length += STATIC_ITEMS;
266 screen_status_printf(_("Welcome to the key editor!"));
267 }
269 subcmd = -1;
270 list_window_check_selected(lw, LIST_LENGTH());
271 }
273 static void
274 keydef_close(void)
275 {
276 if (cmds && !keybindings_changed()) {
277 g_free(cmds);
278 cmds = NULL;
279 } else
280 screen_status_printf(_("Note: Did you forget to \'Apply\' your changes?"));
281 }
283 static const char *
284 keydef_title(char *str, size_t size)
285 {
286 if (subcmd < 0)
287 return _("Edit key bindings");
289 g_snprintf(str, size, _("Edit keys for %s"), cmds[subcmd].name);
290 return str;
291 }
293 static void
294 keydef_paint(mpd_unused mpdclient_t *c)
295 {
296 list_window_paint(lw, list_callback, NULL);
297 }
299 static int
300 keydef_cmd(screen_t *screen, mpd_unused mpdclient_t *c, command_t cmd)
301 {
302 int length = LIST_LENGTH();
304 if (subcmd >= 0)
305 length = subcmd_length;
307 if (list_window_cmd(lw, length, cmd)) {
308 keydef_repaint();
309 return 1;
310 }
312 switch(cmd) {
313 case CMD_PLAY:
314 if (subcmd < 0) {
315 if (lw->selected == LIST_ITEM_APPLY())
316 apply_keys();
317 else if (lw->selected == LIST_ITEM_SAVE()) {
318 apply_keys();
319 save_keys();
320 } else {
321 subcmd = lw->selected;
322 lw->selected=0;
323 check_subcmd_length();
325 keydef_repaint();
326 }
327 } else {
328 if (lw->selected == 0) { /* up */
329 lw->selected = subcmd;
330 subcmd = -1;
332 keydef_repaint();
333 } else
334 assign_new_key(screen->status_window.w,
335 subcmd,
336 lw->selected - STATIC_SUB_ITEMS);
337 }
338 return 1;
339 case CMD_DELETE:
340 if (subcmd >= 0 && lw->selected >= STATIC_SUB_ITEMS)
341 delete_key(subcmd, lw->selected - STATIC_SUB_ITEMS);
342 return 1;
343 break;
344 case CMD_SAVE_PLAYLIST:
345 apply_keys();
346 save_keys();
347 break;
348 case CMD_LIST_FIND:
349 case CMD_LIST_RFIND:
350 case CMD_LIST_FIND_NEXT:
351 case CMD_LIST_RFIND_NEXT:
352 screen_find(screen,
353 lw, length,
354 cmd, list_callback, NULL);
355 keydef_repaint();
356 return 1;
358 default:
359 break;
360 }
362 return 0;
363 }
365 const struct screen_functions screen_keydef = {
366 .init = keydef_init,
367 .exit = keydef_exit,
368 .open = keydef_open,
369 .close = keydef_close,
370 .resize = keydef_resize,
371 .paint = keydef_paint,
372 .cmd = keydef_cmd,
373 .get_title = keydef_title,
374 };