30f85ac76e18f378dc4dcc45379cf89e3bf705e5
1 /* ncmpc (Ncurses MPD Client)
2 * (c) 2004-2009 The Music Player Daemon Project
3 * Project homepage: http://musicpd.org
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
20 #include "screen_keydef.h"
21 #include "screen_interface.h"
22 #include "i18n.h"
23 #include "conf.h"
24 #include "screen.h"
25 #include "screen_utils.h"
27 #include <errno.h>
28 #include <string.h>
29 #include <glib.h>
31 #define STATIC_ITEMS 0
32 #define STATIC_SUB_ITEMS 1
33 #define BUFSIZE 256
35 #define LIST_ITEM_APPLY() ((unsigned)command_list_length)
36 #define LIST_ITEM_SAVE() (LIST_ITEM_APPLY()+1)
37 #define LIST_LENGTH() (LIST_ITEM_SAVE()+1)
39 #define LIST_ITEM_SAVE_LABEL _("===> Apply & Save key bindings ")
40 #define LIST_ITEM_APPLY_LABEL _("===> Apply key bindings ")
43 static list_window_t *lw = NULL;
44 static unsigned command_list_length = 0;
45 static command_definition_t *cmds = NULL;
47 static int subcmd = -1;
48 static unsigned subcmd_length = 0;
49 static unsigned subcmd_addpos = 0;
51 static int
52 keybindings_changed(void)
53 {
54 command_definition_t *orginal_cmds = get_command_definitions();
55 size_t size = command_list_length * sizeof(command_definition_t);
57 return memcmp(orginal_cmds, cmds, size);
58 }
60 static void
61 apply_keys(void)
62 {
63 if (keybindings_changed()) {
64 command_definition_t *orginal_cmds = get_command_definitions();
65 size_t size = command_list_length * sizeof(command_definition_t);
67 memcpy(orginal_cmds, cmds, size);
68 screen_status_printf(_("You have new key bindings"));
69 } else
70 screen_status_printf(_("Keybindings unchanged."));
71 }
73 static int
74 save_keys(void)
75 {
76 FILE *f;
77 char *filename;
79 if (check_user_conf_dir()) {
80 screen_status_printf(_("Error: Unable to create directory ~/.ncmpc - %s"),
81 strerror(errno));
82 screen_bell();
83 return -1;
84 }
86 filename = get_user_key_binding_filename();
88 if ((f = fopen(filename,"w")) == NULL) {
89 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
90 screen_bell();
91 g_free(filename);
92 return -1;
93 }
95 if (write_key_bindings(f, KEYDEF_WRITE_HEADER))
96 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
97 else
98 screen_status_printf(_("Wrote %s"), filename);
100 g_free(filename);
101 return fclose(f);
102 }
104 static void
105 check_subcmd_length(void)
106 {
107 subcmd_length = 0;
108 while (subcmd_length < MAX_COMMAND_KEYS &&
109 cmds[subcmd].keys[subcmd_length] > 0)
110 ++subcmd_length;
112 if (subcmd_length < MAX_COMMAND_KEYS) {
113 subcmd_addpos = subcmd_length;
114 subcmd_length++;
115 } else
116 subcmd_addpos = 0;
117 subcmd_length += STATIC_SUB_ITEMS;
118 }
120 static void
121 keydef_paint(void);
123 static void
124 keydef_repaint(void)
125 {
126 keydef_paint();
127 wrefresh(lw->w);
128 }
130 static void
131 delete_key(int cmd_index, int key_index)
132 {
133 int i = key_index+1;
135 screen_status_printf(_("Deleted"));
136 while (i < MAX_COMMAND_KEYS && cmds[cmd_index].keys[i])
137 cmds[cmd_index].keys[key_index++] = cmds[cmd_index].keys[i++];
138 cmds[cmd_index].keys[key_index] = 0;
139 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
140 check_subcmd_length();
142 /* repaint */
143 keydef_repaint();
145 /* update key conflict flags */
146 check_key_bindings(cmds, NULL, 0);
147 }
149 static void
150 assign_new_key(int cmd_index, int key_index)
151 {
152 int key;
153 char *buf;
154 command_t cmd;
156 buf = g_strdup_printf(_("Enter new key for %s: "), cmds[cmd_index].name);
157 key = screen_getch(buf);
158 g_free(buf);
160 if (key==ERR) {
161 screen_status_printf(_("Aborted"));
162 return;
163 }
165 cmd = find_key_command(key, cmds);
166 if (cmd != CMD_NONE && cmd != cmds[cmd_index].command) {
167 screen_status_printf(_("Error: key %s is already used for %s"),
168 key2str(key),
169 get_key_command_name(cmd));
170 screen_bell();
171 return;
172 }
174 cmds[cmd_index].keys[key_index] = key;
175 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
177 screen_status_printf(_("Assigned %s to %s"),
178 key2str(key),cmds[cmd_index].name);
179 check_subcmd_length();
181 /* repaint */
182 keydef_repaint();
184 /* update key conflict flags */
185 check_key_bindings(cmds, NULL, 0);
186 }
188 static const char *
189 list_callback(unsigned idx, bool *highlight, G_GNUC_UNUSED char** sc, G_GNUC_UNUSED void *data)
190 {
191 static char buf[BUFSIZE];
193 if (subcmd < 0) {
194 if (idx < (unsigned)command_list_length) {
195 if (cmds[idx].flags & COMMAND_KEY_CONFLICT)
196 *highlight = true;
197 return cmds[idx].name;
198 } else if (idx == LIST_ITEM_APPLY())
199 return LIST_ITEM_APPLY_LABEL;
200 else if (idx == LIST_ITEM_SAVE())
201 return LIST_ITEM_SAVE_LABEL;
202 } else {
203 if (idx == 0)
204 return "[..]";
205 idx--;
206 if (idx < MAX_COMMAND_KEYS && cmds[subcmd].keys[idx] > 0) {
207 g_snprintf(buf,
208 BUFSIZE, "%d. %-20s (%d) ",
209 idx + 1,
210 key2str(cmds[subcmd].keys[idx]),
211 cmds[subcmd].keys[idx]);
212 return buf;
213 } else if (idx == subcmd_addpos) {
214 g_snprintf(buf, BUFSIZE, "%d. %s",
215 idx + 1, _("Add new key"));
216 return buf;
217 }
218 }
220 return NULL;
221 }
223 static void
224 keydef_init(WINDOW *w, int cols, int rows)
225 {
226 lw = list_window_init(w, cols, rows);
227 }
229 static void
230 keydef_resize(int cols, int rows)
231 {
232 lw->cols = cols;
233 lw->rows = rows;
234 }
236 static void
237 keydef_exit(void)
238 {
239 list_window_free(lw);
240 if (cmds)
241 g_free(cmds);
242 cmds = NULL;
243 lw = NULL;
244 }
246 static void
247 keydef_open(G_GNUC_UNUSED struct mpdclient *c)
248 {
249 if (cmds == NULL) {
250 command_definition_t *current_cmds = get_command_definitions();
251 size_t cmds_size;
253 command_list_length = 0;
254 while (current_cmds[command_list_length].name)
255 command_list_length++;
257 cmds_size = (command_list_length+1) * sizeof(command_definition_t);
258 cmds = g_malloc0(cmds_size);
259 memcpy(cmds, current_cmds, cmds_size);
260 command_list_length += STATIC_ITEMS;
261 }
263 subcmd = -1;
264 list_window_check_selected(lw, LIST_LENGTH());
265 }
267 static void
268 keydef_close(void)
269 {
270 if (cmds && !keybindings_changed()) {
271 g_free(cmds);
272 cmds = NULL;
273 } else
274 screen_status_printf(_("Note: Did you forget to \'Apply\' your changes?"));
275 }
277 static const char *
278 keydef_title(char *str, size_t size)
279 {
280 if (subcmd < 0)
281 return _("Edit key bindings");
283 g_snprintf(str, size, _("Edit keys for %s"), cmds[subcmd].name);
284 return str;
285 }
287 static void
288 keydef_paint(void)
289 {
290 list_window_paint(lw, list_callback, NULL);
291 }
293 static bool
294 keydef_cmd(G_GNUC_UNUSED struct mpdclient *c, command_t cmd)
295 {
296 int length = LIST_LENGTH();
298 if (subcmd >= 0)
299 length = subcmd_length;
301 if (cmd == CMD_LIST_RANGE_SELECT)
302 return false;
304 if (list_window_cmd(lw, length, cmd)) {
305 keydef_repaint();
306 return true;
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 lw->selected_start = lw->selected;
321 lw->selected_end = lw->selected;
322 check_subcmd_length();
324 keydef_repaint();
325 }
326 } else {
327 if (lw->selected == 0) { /* up */
328 lw->selected = subcmd;
329 lw->selected_start = lw->selected;
330 lw->selected_end = lw->selected;
331 subcmd = -1;
333 keydef_repaint();
334 } else
335 assign_new_key(subcmd,
336 lw->selected - STATIC_SUB_ITEMS);
337 }
338 return true;
339 case CMD_GO_PARENT_DIRECTORY:
340 if (subcmd >=0) {
341 lw->selected = subcmd;
342 lw->selected_start = lw->selected;
343 lw->selected_end = lw->selected;
344 subcmd = -1;
346 keydef_repaint();
347 }
348 break;
349 case CMD_DELETE:
350 if (subcmd >= 0 && lw->selected >= STATIC_SUB_ITEMS)
351 delete_key(subcmd, lw->selected - STATIC_SUB_ITEMS);
352 return true;
353 break;
354 case CMD_SAVE_PLAYLIST:
355 apply_keys();
356 save_keys();
357 break;
358 case CMD_LIST_FIND:
359 case CMD_LIST_RFIND:
360 case CMD_LIST_FIND_NEXT:
361 case CMD_LIST_RFIND_NEXT:
362 screen_find(lw, length,
363 cmd, list_callback, NULL);
364 keydef_repaint();
365 return true;
367 default:
368 break;
369 }
371 return false;
372 }
374 const struct screen_functions screen_keydef = {
375 .init = keydef_init,
376 .exit = keydef_exit,
377 .open = keydef_open,
378 .close = keydef_close,
379 .resize = keydef_resize,
380 .paint = keydef_paint,
381 .cmd = keydef_cmd,
382 .get_title = keydef_title,
383 };