1 /*
2 * $Id$
3 *
4 * (c) 2004 by Kalle Wallin <kaw@linux.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
21 #include "config.h"
23 #ifndef DISABLE_KEYDEF_SCREEN
24 #include "ncmpc.h"
25 #include "mpdclient.h"
26 #include "options.h"
27 #include "conf.h"
28 #include "command.h"
29 #include "screen.h"
30 #include "screen_utils.h"
31 #include "gcc.h"
33 #include <errno.h>
34 #include <stdlib.h>
35 #include <string.h>
36 #include <glib.h>
37 #include <ncurses.h>
39 #define STATIC_ITEMS 0
40 #define STATIC_SUB_ITEMS 1
41 #define BUFSIZE 256
43 #define LIST_ITEM_APPLY() ((unsigned)command_list_length)
44 #define LIST_ITEM_SAVE() (LIST_ITEM_APPLY()+1)
45 #define LIST_LENGTH() (LIST_ITEM_SAVE()+1)
47 #define LIST_ITEM_SAVE_LABEL _("===> Apply & Save key bindings ")
48 #define LIST_ITEM_APPLY_LABEL _("===> Apply key bindings ")
51 static list_window_t *lw = NULL;
52 static unsigned command_list_length = 0;
53 static command_definition_t *cmds = NULL;
55 static int subcmd = -1;
56 static unsigned subcmd_length = 0;
57 static unsigned subcmd_addpos = 0;
59 static int
60 keybindings_changed(void)
61 {
62 command_definition_t *orginal_cmds = get_command_definitions();
63 size_t size = command_list_length*sizeof(command_definition_t);
65 return memcmp(orginal_cmds, cmds, size);
66 }
68 static void
69 apply_keys(void)
70 {
71 if( keybindings_changed() )
72 {
73 command_definition_t *orginal_cmds = get_command_definitions();
74 size_t size = command_list_length*sizeof(command_definition_t);
76 memcpy(orginal_cmds, cmds, size);
77 screen_status_printf(_("You have new key bindings!"));
78 }
79 else
80 screen_status_printf(_("Keybindings unchanged."));
81 }
83 static int
84 save_keys(void)
85 {
86 FILE *f;
87 char *filename;
89 if( check_user_conf_dir() )
90 {
91 screen_status_printf(_("Error: Unable to create direcory ~/.ncmpc - %s"),
92 strerror(errno));
93 screen_bell();
94 return -1;
95 }
97 filename = get_user_key_binding_filename();
99 if( (f=fopen(filename,"w")) == NULL )
100 {
101 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
102 screen_bell();
103 g_free(filename);
104 return -1;
105 }
106 if( write_key_bindings(f, KEYDEF_WRITE_HEADER) )
107 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
108 else
109 screen_status_printf(_("Wrote %s"), filename);
111 g_free(filename);
112 return fclose(f);
113 }
115 static void
116 check_subcmd_length(void)
117 {
118 subcmd_length = 0;
119 while( subcmd_length<MAX_COMMAND_KEYS && cmds[subcmd].keys[subcmd_length]>0 )
120 subcmd_length ++;
122 if( subcmd_length<MAX_COMMAND_KEYS )
123 {
124 subcmd_addpos = subcmd_length;
125 subcmd_length++;
126 }
127 else
128 subcmd_addpos = 0;
129 subcmd_length += STATIC_SUB_ITEMS;
130 }
132 static void
133 delete_key(int cmd_index, int key_index)
134 {
135 int i = key_index+1;
137 screen_status_printf(_("Deleted"));
138 while( i<MAX_COMMAND_KEYS && cmds[cmd_index].keys[i] )
139 cmds[cmd_index].keys[key_index++] = cmds[cmd_index].keys[i++];
140 cmds[cmd_index].keys[key_index] = 0;
141 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
142 check_subcmd_length();
143 lw->clear = 1;
144 lw->repaint = 1;
145 /* update key conflict flags */
146 check_key_bindings(cmds, NULL, 0);
147 }
149 static void
150 assign_new_key(WINDOW *w, 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(w, buf);
158 g_free(buf);
159 if( key==KEY_RESIZE )
160 screen_resize();
161 if( key==ERR )
162 {
163 screen_status_printf(_("Aborted!"));
164 return;
165 }
166 cmd = find_key_command(key, cmds);
167 if( cmd!=CMD_NONE && cmd!= cmds[cmd_index].command )
168 {
169 screen_status_printf(_("Error: key %s is already used for %s"),
170 key2str(key),
171 get_key_command_name(cmd));
172 screen_bell();
173 return;
174 }
175 cmds[cmd_index].keys[key_index] = key;
176 cmds[cmd_index].flags |= COMMAND_KEY_MODIFIED;
178 screen_status_printf(_("Assigned %s to %s"),
179 key2str(key),cmds[cmd_index].name);
180 check_subcmd_length();
181 lw->repaint = 1;
182 /* update key conflict flags */
183 check_key_bindings(cmds, NULL, 0);
184 }
186 static const char *
187 list_callback(unsigned idx, int *highlight, mpd_unused void *data)
188 {
189 static char buf[BUFSIZE];
191 if (subcmd < 0) {
192 if (idx < (unsigned)command_list_length) {
193 if (cmds[idx].flags & COMMAND_KEY_CONFLICT)
194 *highlight = 1;
195 return cmds[idx].name;
196 } else if (idx == LIST_ITEM_APPLY())
197 return LIST_ITEM_APPLY_LABEL;
198 else if (idx == LIST_ITEM_SAVE())
199 return LIST_ITEM_SAVE_LABEL;
200 } else {
201 if (idx == 0)
202 return "[..]";
203 idx--;
204 if (idx < MAX_COMMAND_KEYS && cmds[subcmd].keys[idx] > 0) {
205 g_snprintf(buf,
206 BUFSIZE, "%d. %-20s (%d) ",
207 idx + 1,
208 key2str(cmds[subcmd].keys[idx]),
209 cmds[subcmd].keys[idx]);
210 return buf;
211 } else if (idx == subcmd_addpos) {
212 g_snprintf(buf, BUFSIZE, _("%d. Add new key "), idx + 1);
213 return buf;
214 }
215 }
217 return NULL;
218 }
220 static void
221 keydef_init(WINDOW *w, int cols, int rows)
222 {
223 lw = list_window_init(w, cols, rows);
224 }
226 static void
227 keydef_resize(int cols, int rows)
228 {
229 lw->cols = cols;
230 lw->rows = rows;
231 }
233 static void
234 keydef_exit(void)
235 {
236 list_window_free(lw);
237 if( cmds )
238 g_free(cmds);
239 cmds = NULL;
240 lw = NULL;
241 }
243 static void
244 keydef_open(mpd_unused screen_t *screen, mpd_unused mpdclient_t *c)
245 {
246 if( cmds == NULL )
247 {
248 command_definition_t *current_cmds = get_command_definitions();
249 size_t cmds_size;
251 command_list_length = 0;
252 while( current_cmds[command_list_length].name )
253 command_list_length++;
255 cmds_size = (command_list_length+1)*sizeof(command_definition_t);
256 cmds = g_malloc0(cmds_size);
257 memcpy(cmds, current_cmds, cmds_size);
258 command_list_length += STATIC_ITEMS;
259 screen_status_printf(_("Welcome to the key editor!"));
260 }
262 subcmd = -1;
263 list_window_check_selected(lw, LIST_LENGTH());
264 }
266 static void
267 keydef_close(void)
268 {
269 if( cmds && !keybindings_changed() )
270 {
271 g_free(cmds);
272 cmds = NULL;
273 }
274 else
275 screen_status_printf(_("Note: Did you forget to \'Apply\' your changes?"));
276 }
278 static const char *
279 keydef_title(char *str, size_t size)
280 {
281 if( subcmd<0 )
282 return _("Edit key bindings");
284 g_snprintf(str, size, _("Edit keys for %s"), cmds[subcmd].name);
285 return str;
286 }
288 static void
289 keydef_paint(mpd_unused screen_t *screen, mpd_unused mpdclient_t *c)
290 {
291 lw->clear = 1;
292 list_window_paint(lw, list_callback, NULL);
293 wrefresh(lw->w);
294 }
296 static void
297 keydef_update(mpd_unused screen_t *screen, mpd_unused mpdclient_t *c)
298 {
299 if( lw->repaint )
300 {
301 list_window_paint(lw, list_callback, NULL);
302 wrefresh(lw->w);
303 lw->repaint = 0;
304 }
305 }
307 static int
308 keydef_cmd(screen_t *screen, mpd_unused mpdclient_t *c, command_t cmd)
309 {
310 int length = LIST_LENGTH();
312 if (subcmd >= 0)
313 length = subcmd_length;
315 switch(cmd) {
316 case CMD_PLAY:
317 if( subcmd<0 ) {
318 if( lw->selected == LIST_ITEM_APPLY() )
319 apply_keys();
320 else if( lw->selected == LIST_ITEM_SAVE() ) {
321 apply_keys();
322 save_keys();
323 } else {
324 subcmd = lw->selected;
325 lw->selected=0;
326 check_subcmd_length();
327 }
328 } else {
329 if (lw->selected == 0) { /* up */
330 lw->selected = subcmd;
331 subcmd = -1;
332 } else
333 assign_new_key(screen->status_window.w,
334 subcmd,
335 lw->selected-STATIC_SUB_ITEMS);
336 }
337 lw->repaint = 1;
338 lw->clear = 1;
339 return 1;
340 case CMD_DELETE:
341 if (subcmd >= 0 && lw->selected >= STATIC_SUB_ITEMS)
342 delete_key(subcmd, lw->selected - STATIC_SUB_ITEMS);
343 return 1;
344 break;
345 case CMD_SAVE_PLAYLIST:
346 apply_keys();
347 save_keys();
348 break;
349 case CMD_LIST_FIND:
350 case CMD_LIST_RFIND:
351 case CMD_LIST_FIND_NEXT:
352 case CMD_LIST_RFIND_NEXT:
353 return screen_find(screen,
354 lw, length,
355 cmd, list_callback, NULL);
357 default:
358 break;
359 }
361 return list_window_cmd(lw, length, cmd);
362 }
364 const struct screen_functions screen_keydef = {
365 .init = keydef_init,
366 .exit = keydef_exit,
367 .open = keydef_open,
368 .close = keydef_close,
369 .resize = keydef_resize,
370 .paint = keydef_paint,
371 .update = keydef_update,
372 .cmd = keydef_cmd,
373 .get_title = keydef_title,
374 };
376 #endif