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