src/screen_utils.c

   1 /*
   2  * $Id$
   3  *
   4  * (c) 2004 by Kalle Wallin <kaw@linux.se>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18  *
  19  */
  20
  21 #include "screen_utils.h"
  22 #include "screen.h"
  23 #include "mpdclient.h"
  24 #include "config.h"
  25 #include "ncmpc.h"
  26 #include "support.h"
  27 #include "options.h"
  28 #include "colors.h"
  29 #include "wreadln.h"
  30
  31 #include <stdlib.h>
  32 #include <unistd.h>
  33 #include <string.h>
  34
  35 #define FIND_PROMPT  _("Find: ")
  36 #define RFIND_PROMPT _("Find backward: ")
  37
  38 void
  39 screen_bell(void)
  40 {
  41         if (options.audible_bell)
  42                 beep();
  43         if (options.visible_bell)
  44                 flash();
  45 }
  46
  47 int
  48 screen_getch(WINDOW *w, const char *prompt)
  49 {
  50         int key = -1;
  51         int prompt_len = strlen(prompt);
  52
  53         colors_use(w, COLOR_STATUS_ALERT);
  54         wclear(w);
  55         wmove(w, 0, 0);
  56         waddstr(w, prompt);
  57         wmove(w, 0, prompt_len);
  58
  59         echo();
  60         curs_set(1);
  61
  62         while ((key=my_wgetch(w)) == ERR)
  63                 ;
  64
  65 #ifdef HAVE_GETMOUSE
  66         /* ignore mouse events */
  67         if (key == KEY_MOUSE)
  68                 return screen_getch(w, prompt);
  69 #endif
  70
  71         noecho();
  72         curs_set(0);
  73
  74         return key;
  75 }
  76
  77 char *
  78 screen_readln(WINDOW *w,
  79               const char *prompt,
  80               const char *value,
  81               GList **history,
  82               GCompletion *gcmp)
  83 {
  84         char *line = NULL;
  85
  86         wmove(w, 0,0);
  87         curs_set(1);
  88         colors_use(w, COLOR_STATUS_ALERT);
  89         line = wreadln(w, prompt, value, COLS, history, gcmp);
  90         curs_set(0);
  91         return line;
  92 }
  93
  94 char *
  95 screen_getstr(WINDOW *w, const char *prompt)
  96 {
  97         return screen_readln(w, prompt, NULL, NULL, NULL);
  98 }
  99
 100 static char *
 101 screen_read_password(WINDOW *w, const char *prompt)
 102 {
 103         char *ret;
 104
 105         if (w == NULL) {
 106                 int rows, cols;
 107                 getmaxyx(stdscr, rows, cols);
 108                 /* create window for input */
 109                 w = newwin(1,  cols, rows-1, 0);
 110                 leaveok(w, FALSE);
 111                 keypad(w, TRUE);
 112         }
 113
 114         wmove(w, 0,0);
 115         curs_set(1);
 116         colors_use(w, COLOR_STATUS_ALERT);
 117
 118         if (prompt == NULL)
 119                 prompt = _("Password: ");
 120         ret = wreadln_masked(w, prompt, NULL, COLS, NULL, NULL);
 121
 122         curs_set(0);
 123         return ret;
 124 }
 125
 126 static gint
 127 _screen_auth(struct mpdclient *c, gint recursion)
 128 {
 129         mpd_clearError(c->connection);
 130         if (recursion > 2)
 131                 return 1;
 132         mpd_sendPasswordCommand(c->connection,  screen_read_password(NULL, NULL));
 133         mpd_finishCommand(c->connection);
 134         mpdclient_update(c);
 135         if (c->connection->errorCode == MPD_ACK_ERROR_PASSWORD)
 136                 return  _screen_auth(c, ++recursion);
 137         return 0;
 138 }
 139
 140 gint
 141 screen_auth(struct mpdclient *c)
 142 {
 143         gint ret = _screen_auth(c, 0);
 144         mpdclient_update(c);
 145         curs_set(0);
 146         return ret;
 147 }
 148
 149 /* query user for a string and find it in a list window */
 150 int
 151 screen_find(screen_t *screen,
 152             list_window_t *lw,
 153             int rows,
 154             command_t findcmd,
 155             list_window_callback_fn_t callback_fn,
 156             void *callback_data)
 157 {
 158         int reversed = 0;
 159         int retval = 0;
 160         const char *prompt = FIND_PROMPT;
 161         char *value = options.find_show_last_pattern ? (char *) -1 : NULL;
 162
 163         if (findcmd == CMD_LIST_RFIND || findcmd == CMD_LIST_RFIND_NEXT) {
 164                 prompt = RFIND_PROMPT;
 165                 reversed = 1;
 166         }
 167
 168         switch (findcmd) {
 169         case CMD_LIST_FIND:
 170         case CMD_LIST_RFIND:
 171                 if (screen->findbuf) {
 172                         g_free(screen->findbuf);
 173                         screen->findbuf=NULL;
 174                 }
 175                 /* continue... */
 176
 177         case CMD_LIST_FIND_NEXT:
 178         case CMD_LIST_RFIND_NEXT:
 179                 if (!screen->findbuf)
 180                         screen->findbuf=screen_readln(screen->status_window.w,
 181                                                       prompt,
 182                                                       value,
 183                                                       &screen->find_history,
 184                                                       NULL);
 185
 186                 if (!screen->findbuf || !screen->findbuf[0])
 187                         return 1;
 188
 189                 if (reversed)
 190                         retval = list_window_rfind(lw,
 191                                                    callback_fn,
 192                                                    callback_data,
 193                                                    screen->findbuf,
 194                                                    options.find_wrap,
 195                                                    rows);
 196                 else
 197                         retval = list_window_find(lw,
 198                                                   callback_fn,
 199                                                   callback_data,
 200                                                   screen->findbuf,
 201                                                   options.find_wrap);
 202
 203                 if (retval == 0)
 204                         lw->repaint  = 1;
 205                 else {
 206                         screen_status_printf(_("Unable to find \'%s\'"), 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(screen_t *screen, 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, basename(tmp));
 245                         g_free(tmp);
 246                 }
 247         }
 248
 249         wrefresh(w);
 250         doupdate();
 251         colors_use(w, COLOR_LIST);
 252 }
 253
 254 void
 255 set_xterm_title(const char *format, ...)
 256 {
 257         /* the current xterm title exists under the WM_NAME property */
 258         /* and can be retreived with xprop -id $WINDOWID */
 259
 260         if (options.enable_xterm_title) {
 261                 if (g_getenv("WINDOWID")) {
 262                         char *msg;
 263                         va_list ap;
 264
 265                         va_start(ap,format);
 266                         msg = g_strdup_vprintf(format,ap);
 267                         va_end(ap);
 268                         printf("%c]0;%s%c", '\033', msg, '\007');
 269                         g_free(msg);
 270                 } else
 271                         options.enable_xterm_title = FALSE;
 272         }
 273 }