src/screen_utils.c

   1 /* ncmpc (Ncurses MPD Client)
   2  * (c) 2004-2009 The Music Player Daemon Project
   3  * Project homepage: http://musicpd.org
   4
   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.
   9
  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.
  14
  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 */
  19
  20 #include "screen_utils.h"
  21 #include "screen.h"
  22 #include "mpdclient.h"
  23 #include "config.h"
  24 #include "i18n.h"
  25 #include "options.h"
  26 #include "colors.h"
  27 #include "wreadln.h"
  28
  29 #include <stdlib.h>
  30 #include <unistd.h>
  31
  32 #define FIND_PROMPT  _("Find")
  33 #define RFIND_PROMPT _("Find backward")
  34
  35 void
  36 screen_bell(void)
  37 {
  38         if (options.audible_bell)
  39                 beep();
  40         if (options.visible_bell)
  41                 flash();
  42 }
  43
  44 int
  45 screen_getch(WINDOW *w, const char *prompt)
  46 {
  47         int key = -1;
  48
  49         colors_use(w, COLOR_STATUS_ALERT);
  50         werase(w);
  51         wmove(w, 0, 0);
  52         waddstr(w, prompt);
  53
  54         echo();
  55         curs_set(1);
  56
  57         while ((key = wgetch(w)) == ERR)
  58                 ;
  59
  60 #ifdef HAVE_GETMOUSE
  61         /* ignore mouse events */
  62         if (key == KEY_MOUSE)
  63                 return screen_getch(w, prompt);
  64 #endif
  65
  66         noecho();
  67         curs_set(0);
  68
  69         return key;
  70 }
  71
  72 char *
  73 screen_readln(WINDOW *w,
  74               const char *prompt,
  75               const char *value,
  76               GList **history,
  77               GCompletion *gcmp)
  78 {
  79         char *line = NULL;
  80
  81         wmove(w, 0,0);
  82         curs_set(1);
  83         colors_use(w, COLOR_STATUS_ALERT);
  84         line = wreadln(w, prompt, value, COLS, history, gcmp);
  85         curs_set(0);
  86         return line;
  87 }
  88
  89 char *
  90 screen_getstr(WINDOW *w, const char *prompt)
  91 {
  92         return screen_readln(w, prompt, NULL, NULL, NULL);
  93 }
  94
  95 static char *
  96 screen_read_password(WINDOW *w, const char *prompt)
  97 {
  98         char *ret;
  99
 100         if (w == NULL) {
 101                 int rows, cols;
 102                 getmaxyx(stdscr, rows, cols);
 103                 /* create window for input */
 104                 w = newwin(1,  cols, rows-1, 0);
 105                 leaveok(w, FALSE);
 106                 keypad(w, TRUE);
 107         }
 108
 109         wmove(w, 0,0);
 110         curs_set(1);
 111         colors_use(w, COLOR_STATUS_ALERT);
 112
 113         if (prompt == NULL)
 114                 prompt = _("Password: ");
 115         ret = wreadln_masked(w, prompt, NULL, COLS, NULL, NULL);
 116
 117         curs_set(0);
 118         return ret;
 119 }
 120
 121 static gint
 122 _screen_auth(struct mpdclient *c, gint recursion)
 123 {
 124         char *password;
 125
 126         mpd_clearError(c->connection);
 127         if (recursion > 2)
 128                 return 1;
 129
 130         password = screen_read_password(NULL, NULL);
 131         if (password == NULL)
 132                 return 1;
 133
 134         mpd_sendPasswordCommand(c->connection, password);
 135         g_free(password);
 136
 137         mpd_finishCommand(c->connection);
 138         mpdclient_update(c);
 139         if (c->connection->errorCode == MPD_ACK_ERROR_PASSWORD)
 140                 return  _screen_auth(c, ++recursion);
 141         return 0;
 142 }
 143
 144 gint
 145 screen_auth(struct mpdclient *c)
 146 {
 147         gint ret = _screen_auth(c, 0);
 148         mpdclient_update(c);
 149         curs_set(0);
 150         return ret;
 151 }
 152
 153 /* query user for a string and find it in a list window */
 154 int
 155 screen_find(list_window_t *lw,
 156             int rows,
 157             command_t findcmd,
 158             list_window_callback_fn_t callback_fn,
 159             void *callback_data)
 160 {
 161         int reversed = 0;
 162         bool found;
 163         const char *prompt = FIND_PROMPT;
 164         char *value = options.find_show_last_pattern ? (char *) -1 : NULL;
 165
 166         if (findcmd == CMD_LIST_RFIND || findcmd == CMD_LIST_RFIND_NEXT) {
 167                 prompt = RFIND_PROMPT;
 168                 reversed = 1;
 169         }
 170
 171         switch (findcmd) {
 172         case CMD_LIST_FIND:
 173         case CMD_LIST_RFIND:
 174                 if (screen.findbuf) {
 175                         g_free(screen.findbuf);
 176                         screen.findbuf=NULL;
 177                 }
 178                 /* continue... */
 179
 180         case CMD_LIST_FIND_NEXT:
 181         case CMD_LIST_RFIND_NEXT:
 182                 if (!screen.findbuf)
 183                         screen.findbuf=screen_readln(screen.status_window.w,
 184                                                      prompt,
 185                                                      value,
 186                                                      &screen.find_history,
 187                                                      NULL);
 188
 189                 if (screen.findbuf == NULL)
 190                         return 1;
 191
 192                 found = reversed
 193                         ? list_window_rfind(lw,
 194                                             callback_fn, callback_data,
 195                                             screen.findbuf,
 196                                             options.find_wrap,
 197                                             options.bell_on_wrap,
 198                                             rows)
 199                         : list_window_find(lw,
 200                                            callback_fn, callback_data,
 201                                            screen.findbuf,
 202                                            options.find_wrap,
 203                                            options.bell_on_wrap);
 204                 if (!found) {
 205                         screen_status_printf(_("Unable to find \'%s\'"),
 206                                              screen.findbuf);
 207                         screen_bell();
 208                 }
 209                 return 1;
 210         default:
 211                 break;
 212         }
 213         return 0;
 214 }
 215
 216 void
 217 screen_display_completion_list(GList *list)
 218 {
 219         static GList *prev_list = NULL;
 220         static guint prev_length = 0;
 221         static guint offset = 0;
 222         WINDOW *w = screen.main_window.w;
 223         guint length, y=0;
 224
 225         length = g_list_length(list);
 226         if (list == prev_list && length == prev_length) {
 227                 offset += screen.main_window.rows;
 228                 if (offset >= length)
 229                         offset = 0;
 230         } else {
 231                 prev_list = list;
 232                 prev_length = length;
 233                 offset = 0;
 234         }
 235
 236         colors_use(w, COLOR_STATUS_ALERT);
 237         while (y < screen.main_window.rows) {
 238                 GList *item = g_list_nth(list, y+offset);
 239
 240                 wmove(w, y++, 0);
 241                 wclrtoeol(w);
 242                 if (item) {
 243                         gchar *tmp = g_strdup(item->data);
 244                         waddstr(w, g_basename(tmp));
 245                         g_free(tmp);
 246                 }
 247         }
 248
 249         wrefresh(w);
 250         doupdate();
 251         colors_use(w, COLOR_LIST);
 252 }
 253
 254 #ifndef NCMPC_MINI
 255 void
 256 set_xterm_title(const char *format, ...)
 257 {
 258         /* the current xterm title exists under the WM_NAME property */
 259         /* and can be retreived with xprop -id $WINDOWID */
 260
 261         if (options.enable_xterm_title) {
 262                 if (g_getenv("WINDOWID")) {
 263                         char *msg;
 264                         va_list ap;
 265
 266                         va_start(ap,format);
 267                         msg = g_strdup_vprintf(format,ap);
 268                         va_end(ap);
 269                         printf("%c]0;%s%c", '\033', msg, '\007');
 270                         g_free(msg);
 271                 } else
 272                         options.enable_xterm_title = FALSE;
 273         }
 274 }
 275 #endif