server-window.c

   1 /* $OpenBSD$ */
   2
   3 /*
   4  * Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
   5  *
   6  * Permission to use, copy, modify, and distribute this software for any
   7  * purpose with or without fee is hereby granted, provided that the above
   8  * copyright notice and this permission notice appear in all copies.
   9  *
  10  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  11  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  12  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  13  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  14  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
  15  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
  16  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  17  */
  18
  19 #include <sys/types.h>
  20
  21 #include <event.h>
  22 #include <unistd.h>
  23
  24 #include "tmux.h"
  25
  26 int     server_window_backoff(struct window_pane *);
  27 int     server_window_check_bell(struct session *, struct window *);
  28 int     server_window_check_activity(struct session *, struct window *);
  29 int     server_window_check_content(
  30             struct session *, struct window *, struct window_pane *);
  31
  32 /* Check if this window should suspend reading. */
  33 int
  34 server_window_backoff(struct window_pane *wp)
  35 {
  36         struct client   *c;
  37         u_int            i;
  38
  39         if (!window_pane_visible(wp))
  40                 return (0);
  41
  42         for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
  43                 c = ARRAY_ITEM(&clients, i);
  44                 if (c == NULL || c->session == NULL)
  45                         continue;
  46                 if ((c->flags & (CLIENT_SUSPENDED|CLIENT_DEAD)) != 0)
  47                         continue;
  48                 if (c->session->curw->window != wp->window)
  49                         continue;
  50
  51                 if (EVBUFFER_LENGTH(c->tty.event->output) > BACKOFF_THRESHOLD)
  52                         return (1);
  53         }
  54         return (0);
  55 }
  56
  57 /* Window functions that need to happen every loop. */
  58 void
  59 server_window_loop(void)
  60 {
  61         struct window           *w;
  62         struct window_pane      *wp;
  63         struct session          *s;
  64         u_int                    i, j;
  65
  66         for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
  67                 w = ARRAY_ITEM(&windows, i);
  68                 if (w == NULL)
  69                         continue;
  70
  71                 TAILQ_FOREACH(wp, &w->panes, entry) {
  72                         if (wp->fd != -1) {
  73                                 if (server_window_backoff(wp))
  74                                         bufferevent_disable(wp->event, EV_READ);
  75                                 else
  76                                         bufferevent_enable(wp->event, EV_READ);
  77                         }
  78                 }
  79
  80                 for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
  81                         s = ARRAY_ITEM(&sessions, j);
  82                         if (s == NULL || !session_has(s, w))
  83                                 continue;
  84
  85                         if (server_window_check_bell(s, w) ||
  86                             server_window_check_activity(s, w))
  87                                 server_status_session(s);
  88                         TAILQ_FOREACH(wp, &w->panes, entry)
  89                                 server_window_check_content(s, w, wp);
  90                 }
  91                 w->flags &= ~(WINDOW_BELL|WINDOW_ACTIVITY|WINDOW_CONTENT);
  92         }
  93 }
  94
  95 /* Check for bell in window. */
  96 int
  97 server_window_check_bell(struct session *s, struct window *w)
  98 {
  99         struct client   *c;
 100         u_int            i;
 101         int              action, visual;
 102
 103         if (!(w->flags & WINDOW_BELL))
 104                 return (0);
 105
 106         if (session_alert_has_window(s, w, WINDOW_BELL))
 107                 return (0);
 108         session_alert_add(s, w, WINDOW_BELL);
 109
 110         action = options_get_number(&s->options, "bell-action");
 111         switch (action) {
 112         case BELL_ANY:
 113                 if (s->flags & SESSION_UNATTACHED)
 114                         break;
 115                 visual = options_get_number(&s->options, "visual-bell");
 116                 for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 117                         c = ARRAY_ITEM(&clients, i);
 118                         if (c == NULL || c->session != s)
 119                                 continue;
 120                         if (!visual) {
 121                                 tty_putcode(&c->tty, TTYC_BEL);
 122                                 continue;
 123                         }
 124                         if (c->session->curw->window == w) {
 125                                 status_message_set(c, "Bell in current window");
 126                                 continue;
 127                         }
 128                         status_message_set(c, "Bell in window %u",
 129                             winlink_find_by_window(&s->windows, w)->idx);
 130                 }
 131                 break;
 132         case BELL_CURRENT:
 133                 if (s->flags & SESSION_UNATTACHED)
 134                         break;
 135                 visual = options_get_number(&s->options, "visual-bell");
 136                 for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 137                         c = ARRAY_ITEM(&clients, i);
 138                         if (c == NULL || c->session != s)
 139                                 continue;
 140                         if (c->session->curw->window != w)
 141                                 continue;
 142                         if (!visual) {
 143                                 tty_putcode(&c->tty, TTYC_BEL);
 144                                 continue;
 145                         }
 146                         status_message_set(c, "Bell in current window");
 147                 }
 148                 break;
 149         }
 150
 151         return (1);
 152 }
 153
 154 /* Check for activity in window. */
 155 int
 156 server_window_check_activity(struct session *s, struct window *w)
 157 {
 158         struct client   *c;
 159         u_int            i;
 160
 161         if (!(w->flags & WINDOW_ACTIVITY))
 162                 return (0);
 163         if (s->curw->window == w)
 164                 return (0);
 165
 166         if (!options_get_number(&w->options, "monitor-activity"))
 167                 return (0);
 168
 169         if (session_alert_has_window(s, w, WINDOW_ACTIVITY))
 170                 return (0);
 171         session_alert_add(s, w, WINDOW_ACTIVITY);
 172
 173         if (s->flags & SESSION_UNATTACHED)
 174                 return (0);
 175         if (options_get_number(&s->options, "visual-activity")) {
 176                 for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 177                         c = ARRAY_ITEM(&clients, i);
 178                         if (c == NULL || c->session != s)
 179                                 continue;
 180                         status_message_set(c, "Activity in window %u",
 181                             winlink_find_by_window(&s->windows, w)->idx);
 182                 }
 183         }
 184
 185         return (1);
 186 }
 187
 188 /* Check for content change in window. */
 189 int
 190 server_window_check_content(
 191     struct session *s, struct window *w, struct window_pane *wp)
 192 {
 193         struct client   *c;
 194         u_int            i;
 195         char            *found, *ptr;
 196
 197         if (!(w->flags & WINDOW_ACTIVITY))      /* activity for new content */
 198                 return (0);
 199         if (s->curw->window == w)
 200                 return (0);
 201
 202         ptr = options_get_string(&w->options, "monitor-content");
 203         if (ptr == NULL || *ptr == '\0')
 204                 return (0);
 205
 206         if (session_alert_has_window(s, w, WINDOW_CONTENT))
 207                 return (0);
 208
 209         if ((found = window_pane_search(wp, ptr, NULL)) == NULL)
 210                 return (0);
 211         xfree(found);
 212
 213         session_alert_add(s, w, WINDOW_CONTENT);
 214         if (s->flags & SESSION_UNATTACHED)
 215                 return (0);
 216         if (options_get_number(&s->options, "visual-content")) {
 217                 for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
 218                         c = ARRAY_ITEM(&clients, i);
 219                         if (c == NULL || c->session != s)
 220                                 continue;
 221                         status_message_set(c, "Content in window %u",
 222                             winlink_find_by_window(&s->windows, w)->idx);
 223                 }
 224         }
 225
 226         return (1);
 227 }