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 "ncmpc.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=my_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         mpd_clearError(c->connection);
 125         if (recursion > 2)
 126                 return 1;
 127         mpd_sendPasswordCommand(c->connection,  screen_read_password(NULL, NULL));
 128         mpd_finishCommand(c->connection);
 129         mpdclient_update(c);
 130         if (c->connection->errorCode == MPD_ACK_ERROR_PASSWORD)
 131                 return  _screen_auth(c, ++recursion);
 132         return 0;
 133 }
 134
 135 gint
 136 screen_auth(struct mpdclient *c)
 137 {
 138         gint ret = _screen_auth(c, 0);
 139         mpdclient_update(c);
 140         curs_set(0);
 141         return ret;
 142 }
 143
 144 /* query user for a string and find it in a list window */
 145 int
 146 screen_find(screen_t *screen,
 147             list_window_t *lw,
 148             int rows,
 149             command_t findcmd,
 150             list_window_callback_fn_t callback_fn,
 151             void *callback_data)
 152 {
 153         int reversed = 0;
 154         int retval = 0;
 155         const char *prompt = FIND_PROMPT;
 156         char *value = options.find_show_last_pattern ? (char *) -1 : NULL;
 157
 158         if (findcmd == CMD_LIST_RFIND || findcmd == CMD_LIST_RFIND_NEXT) {
 159                 prompt = RFIND_PROMPT;
 160                 reversed = 1;
 161         }
 162
 163         switch (findcmd) {
 164         case CMD_LIST_FIND:
 165         case CMD_LIST_RFIND:
 166                 if (screen->findbuf) {
 167                         g_free(screen->findbuf);
 168                         screen->findbuf=NULL;
 169                 }
 170                 /* continue... */
 171
 172         case CMD_LIST_FIND_NEXT:
 173         case CMD_LIST_RFIND_NEXT:
 174                 if (!screen->findbuf)
 175                         screen->findbuf=screen_readln(screen->status_window.w,
 176                                                       prompt,
 177                                                       value,
 178                                                       &screen->find_history,
 179                                                       NULL);
 180
 181                 if (!screen->findbuf || !screen->findbuf[0])
 182                         return 1;
 183
 184                 if (reversed)
 185                         retval = list_window_rfind(lw,
 186                                                    callback_fn,
 187                                                    callback_data,
 188                                                    screen->findbuf,
 189                                                    options.find_wrap,
 190                                                    rows);
 191                 else
 192                         retval = list_window_find(lw,
 193                                                   callback_fn,
 194                                                   callback_data,
 195                                                   screen->findbuf,
 196                                                   options.find_wrap);
 197
 198                 if (retval != 0) {
 199                         screen_status_printf(_("Unable to find \'%s\'"), screen->findbuf);
 200                         screen_bell();
 201                 }
 202                 return 1;
 203         default:
 204                 break;
 205         }
 206         return 0;
 207 }
 208
 209 void
 210 screen_display_completion_list(screen_t *screen, GList *list)
 211 {
 212         static GList *prev_list = NULL;
 213         static guint prev_length = 0;
 214         static guint offset = 0;
 215         WINDOW *w = screen->main_window.w;
 216         guint length, y=0;
 217
 218         length = g_list_length(list);
 219         if (list == prev_list && length == prev_length) {
 220                 offset += screen->main_window.rows;
 221                 if (offset >= length)
 222                         offset = 0;
 223         } else {
 224                 prev_list = list;
 225                 prev_length = length;
 226                 offset = 0;
 227         }
 228
 229         colors_use(w, COLOR_STATUS_ALERT);
 230         while (y < screen->main_window.rows) {
 231                 GList *item = g_list_nth(list, y+offset);
 232
 233                 wmove(w, y++, 0);
 234                 wclrtoeol(w);
 235                 if (item) {
 236                         gchar *tmp = g_strdup(item->data);
 237                         waddstr(w, basename(tmp));
 238                         g_free(tmp);
 239                 }
 240         }
 241
 242         wrefresh(w);
 243         doupdate();
 244         colors_use(w, COLOR_LIST);
 245 }
 246
 247 void
 248 set_xterm_title(const char *format, ...)
 249 {
 250         /* the current xterm title exists under the WM_NAME property */
 251         /* and can be retreived with xprop -id $WINDOWID */
 252
 253         if (options.enable_xterm_title) {
 254                 if (g_getenv("WINDOWID")) {
 255                         char *msg;
 256                         va_list ap;
 257
 258                         va_start(ap,format);
 259                         msg = g_strdup_vprintf(format,ap);
 260                         va_end(ap);
 261                         printf("%c]0;%s%c", '\033', msg, '\007');
 262                         g_free(msg);
 263                 } else
 264                         options.enable_xterm_title = FALSE;
 265         }
 266 }