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