src/screen_utils.c

   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  */
  18
  19 #include "screen_utils.h"
  20 #include "screen.h"
  21 #include "mpdclient.h"
  22 #include "config.h"
  23 #include "i18n.h"
  24 #include "support.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         wclear(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         int retval = 0;
 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                 if (reversed)
 193                         retval = list_window_rfind(lw,
 194                                                    callback_fn,
 195                                                    callback_data,
 196                                                    screen.findbuf,
 197                                                    options.find_wrap,
 198                                                    rows);
 199                 else
 200                         retval = list_window_find(lw,
 201                                                   callback_fn,
 202                                                   callback_data,
 203                                                   screen.findbuf,
 204                                                   options.find_wrap);
 205
 206                 if (retval != 0) {
 207                         screen_status_printf(_("Unable to find \'%s\'"),
 208                                              screen.findbuf);
 209                         screen_bell();
 210                 }
 211                 return 1;
 212         default:
 213                 break;
 214         }
 215         return 0;
 216 }
 217
 218 void
 219 screen_display_completion_list(GList *list)
 220 {
 221         static GList *prev_list = NULL;
 222         static guint prev_length = 0;
 223         static guint offset = 0;
 224         WINDOW *w = screen.main_window.w;
 225         guint length, y=0;
 226
 227         length = g_list_length(list);
 228         if (list == prev_list && length == prev_length) {
 229                 offset += screen.main_window.rows;
 230                 if (offset >= length)
 231                         offset = 0;
 232         } else {
 233                 prev_list = list;
 234                 prev_length = length;
 235                 offset = 0;
 236         }
 237
 238         colors_use(w, COLOR_STATUS_ALERT);
 239         while (y < screen.main_window.rows) {
 240                 GList *item = g_list_nth(list, y+offset);
 241
 242                 wmove(w, y++, 0);
 243                 wclrtoeol(w);
 244                 if (item) {
 245                         gchar *tmp = g_strdup(item->data);
 246                         waddstr(w, g_basename(tmp));
 247                         g_free(tmp);
 248                 }
 249         }
 250
 251         wrefresh(w);
 252         doupdate();
 253         colors_use(w, COLOR_LIST);
 254 }
 255
 256 #ifndef NCMPC_MINI
 257 void
 258 set_xterm_title(const char *format, ...)
 259 {
 260         /* the current xterm title exists under the WM_NAME property */
 261         /* and can be retreived with xprop -id $WINDOWID */
 262
 263         if (options.enable_xterm_title) {
 264                 if (g_getenv("WINDOWID")) {
 265                         char *msg;
 266                         va_list ap;
 267
 268                         va_start(ap,format);
 269                         msg = g_strdup_vprintf(format,ap);
 270                         va_end(ap);
 271                         printf("%c]0;%s%c", '\033', msg, '\007');
 272                         g_free(msg);
 273                 } else
 274                         options.enable_xterm_title = FALSE;
 275         }
 276 }
 277 #endif