b85c094c557412f35b6d859d679e9513395e54ea
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 <errno.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <glib.h>
25 #include <ncurses.h>
27 #include "config.h"
29 #ifdef ENABLE_KEYDEF_SCREEN
30 #include "ncmpc.h"
31 #include "mpdclient.h"
32 #include "options.h"
33 #include "conf.h"
34 #include "command.h"
35 #include "screen.h"
36 #include "screen_utils.h"
38 #define STATIC_ITEMS 0
39 #define STATIC_SUB_ITEMS 1
40 #define BUFSIZE 256
42 #define LIST_ITEM_APPLY() (command_list_length)
43 #define LIST_ITEM_SAVE() (LIST_ITEM_APPLY()+1)
44 #define LIST_LENGTH() (LIST_ITEM_SAVE()+1)
46 #define LIST_ITEM_SAVE_LABEL _("===> Apply & Save key bindings ")
47 #define LIST_ITEM_APPLY_LABEL _("===> Apply key bindings ")
50 static list_window_t *lw = NULL;
51 static int command_list_length = 0;
52 static command_definition_t *cmds = NULL;
54 static int subcmd = -1;
55 static int subcmd_length = 0;
56 static int subcmd_addpos = 0;
58 static int
59 keybindings_changed(void)
60 {
61 command_definition_t *orginal_cmds = get_command_definitions();
62 size_t size = command_list_length*sizeof(command_definition_t);
64 return memcmp(orginal_cmds, cmds, size);
65 }
67 static void
68 apply_keys(void)
69 {
70 if( keybindings_changed() )
71 {
72 command_definition_t *orginal_cmds = get_command_definitions();
73 size_t size = command_list_length*sizeof(command_definition_t);
75 memcpy(orginal_cmds, cmds, size);
76 screen_status_printf(_("You have new key bindings!"));
77 }
78 else
79 screen_status_printf(_("Keybindings unchanged."));
80 }
82 static int
83 save_keys(void)
84 {
85 FILE *f;
86 char *filename;
88 if( check_user_conf_dir() )
89 {
90 screen_status_printf(_("Error: Unable to create direcory ~/.ncmpc - %s"),
91 strerror(errno));
92 screen_bell();
93 return -1;
94 }
96 filename = get_user_key_binding_filename();
98 if( (f=fopen(filename,"w")) == NULL )
99 {
100 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
101 screen_bell();
102 g_free(filename);
103 return -1;
104 }
105 if( write_key_bindings(f) )
106 screen_status_printf(_("Error: %s - %s"), filename, strerror(errno));
107 else
108 screen_status_printf(_("Wrote %s"), filename);
110 g_free(filename);
111 return fclose(f);
112 }
114 static void
115 check_subcmd_length(void)
116 {
117 subcmd_length = 0;
118 while( subcmd_length<MAX_COMMAND_KEYS && cmds[subcmd].keys[subcmd_length]>0 )
119 subcmd_length ++;
121 if( subcmd_length<MAX_COMMAND_KEYS )
122 {
123 subcmd_addpos = subcmd_length;
124 subcmd_length++;
125 }
126 else
127 subcmd_addpos = 0;
128 subcmd_length += STATIC_SUB_ITEMS;
129 }
131 static void
132 delete_key(int cmd_index, int key_index)
133 {
134 int i = key_index+1;
136 screen_status_printf(_("Deleted"));
137 while( i<MAX_COMMAND_KEYS && cmds[cmd_index].keys[i] )
138 cmds[cmd_index].keys[key_index++] = cmds[cmd_index].keys[i++];
139 cmds[cmd_index].keys[key_index] = 0;
141 check_subcmd_length();
142 lw->clear = 1;
143 lw->repaint = 1;
144 }
146 static void
147 assign_new_key(WINDOW *w, int cmd_index, int key_index)
148 {
149 int key;
150 char buf[BUFSIZE];
151 command_t cmd;
153 snprintf(buf, BUFSIZE, _("Enter new key for %s: "), cmds[cmd_index].name);
154 key = screen_getch(w, buf);
155 if( key==KEY_RESIZE )
156 screen_resize();
157 if( key==ERR )
158 {
159 screen_status_printf(_("Aborted!"));
160 return;
161 }
162 cmd = find_key_command(key, cmds);
163 if( cmd!=CMD_NONE && cmd!= cmds[cmd_index].command )
164 {
165 screen_status_printf(_("Error: key %s is already used for %s"),
166 key2str(key),
167 get_key_command_name(cmd));
168 screen_bell();
169 return;
170 }
171 cmds[cmd_index].keys[key_index] = key;
172 screen_status_printf(_("Assigned %s to %s"),
173 key2str(key),cmds[cmd_index].name);
174 check_subcmd_length();
175 lw->repaint = 1;
176 }
178 static char *
179 list_callback(int index, int *highlight, void *data)
180 {
181 static char buf[BUFSIZE];
183 if( subcmd <0 )
184 {
185 if( index<command_list_length )
186 return cmds[index].name;
187 else if( index==LIST_ITEM_APPLY() )
188 return LIST_ITEM_APPLY_LABEL;
189 else if( index==LIST_ITEM_SAVE() )
190 return LIST_ITEM_SAVE_LABEL;
191 }
192 else
193 {
194 if( index== 0 )
195 return "[..]";
196 index--;
197 if( index<MAX_COMMAND_KEYS && cmds[subcmd].keys[index]>0 )
198 {
199 snprintf(buf,
200 BUFSIZE, "%d. %-20s (%d) ",
201 index+1,
202 key2str(cmds[subcmd].keys[index]),
203 cmds[subcmd].keys[index]);
204 return buf;
205 }
206 else if ( index==subcmd_addpos )
207 {
208 snprintf(buf, BUFSIZE, _("%d. Add new key "), index+1 );
209 return buf;
210 }
211 }
213 return NULL;
214 }
216 static void
217 keydef_init(WINDOW *w, int cols, int rows)
218 {
219 lw = list_window_init(w, cols, rows);
220 }
222 static void
223 keydef_resize(int cols, int rows)
224 {
225 lw->cols = cols;
226 lw->rows = rows;
227 }
229 static void
230 keydef_exit(void)
231 {
232 list_window_free(lw);
233 if( cmds )
234 g_free(cmds);
235 cmds = NULL;
236 lw = NULL;
237 }
239 static void
240 keydef_open(screen_t *screen, mpdclient_t *c)
241 {
242 if( cmds == NULL )
243 {
244 command_definition_t *current_cmds = get_command_definitions();
245 size_t cmds_size;
247 command_list_length = 0;
248 while( current_cmds[command_list_length].name )
249 command_list_length++;
251 cmds_size = (command_list_length+1)*sizeof(command_definition_t);
252 cmds = g_malloc0(cmds_size);
253 memcpy(cmds, current_cmds, cmds_size);
254 command_list_length += STATIC_ITEMS;
255 screen_status_printf(_("Welcome to the key editor!"));
256 }
258 subcmd = -1;
259 list_window_check_selected(lw, LIST_LENGTH());
260 }
262 static void
263 keydef_close(void)
264 {
265 if( cmds && !keybindings_changed() )
266 {
267 g_free(cmds);
268 cmds = NULL;
269 }
270 else
271 screen_status_printf(_("Note: Did you forget to \'Apply\' your changes?"));
272 }
274 static char *
275 keydef_title(char *str, size_t size)
276 {
277 if( subcmd<0 )
278 return _("Edit key bindings");
280 snprintf(str, size, _("Edit keys for %s"), cmds[subcmd].name);
281 return str;
282 }
284 static void
285 keydef_paint(screen_t *screen, mpdclient_t *c)
286 {
287 lw->clear = 1;
288 list_window_paint(lw, list_callback, NULL);
289 wrefresh(lw->w);
290 }
292 static void
293 keydef_update(screen_t *screen, mpdclient_t *c)
294 {
295 if( lw->repaint )
296 {
297 list_window_paint(lw, list_callback, NULL);
298 wrefresh(lw->w);
299 lw->repaint = 0;
300 }
301 }
303 static int
304 keydef_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
305 {
306 int length = LIST_LENGTH();
308 if( subcmd>=0 )
309 length = subcmd_length;
311 switch(cmd)
312 {
313 case CMD_PLAY:
314 if( subcmd<0 )
315 {
316 if( lw->selected == LIST_ITEM_APPLY() )
317 apply_keys();
318 else if( lw->selected == LIST_ITEM_SAVE() )
319 {
320 apply_keys();
321 save_keys();
322 }
323 else
324 {
325 subcmd = lw->selected;
326 lw->selected=0;
327 check_subcmd_length();
328 }
329 }
330 else
331 {
332 if( lw->selected == 0 ) /* up */
333 {
334 lw->selected = subcmd;
335 subcmd = -1;
336 }
337 else
338 assign_new_key(screen->status_window.w,
339 subcmd,
340 lw->selected-STATIC_SUB_ITEMS);
341 }
342 lw->repaint = 1;
343 lw->clear = 1;
344 return 1;
345 case CMD_DELETE:
346 if( subcmd>=0 && lw->selected-STATIC_SUB_ITEMS>=0 )
347 delete_key(subcmd, lw->selected-STATIC_SUB_ITEMS);
348 return 1;
349 break;
350 case CMD_LIST_FIND:
351 case CMD_LIST_RFIND:
352 case CMD_LIST_FIND_NEXT:
353 case CMD_LIST_RFIND_NEXT:
354 return screen_find(screen, c,
355 lw, length,
356 cmd, list_callback);
358 default:
359 break;
360 }
362 return list_window_cmd(lw, length, cmd);
363 }
365 static list_window_t *
366 keydef_lw(void)
367 {
368 return lw;
369 }
371 screen_functions_t *
372 get_screen_keydef(void)
373 {
374 static screen_functions_t functions;
376 memset(&functions, 0, sizeof(screen_functions_t));
377 functions.init = keydef_init;
378 functions.exit = keydef_exit;
379 functions.open = keydef_open;
380 functions.close = keydef_close;
381 functions.resize = keydef_resize;
382 functions.paint = keydef_paint;
383 functions.update = keydef_update;
384 functions.cmd = keydef_cmd;
385 functions.get_lw = keydef_lw;
386 functions.get_title = keydef_title;
388 return &functions;
389 }
392 #endif