tmux/server-window.c

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/* $Id: server-window.c,v 1.16 2010-07-20 17:36:41 tcunha Exp $ */
/*
* Copyright (c) 2009 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <event.h>
#include <unistd.h>
#include "tmux.h"
int server_window_backoff(struct window_pane *);
int server_window_check_bell(struct session *, struct winlink *);
int server_window_check_activity(struct session *, struct winlink *);
int server_window_check_content(
struct session *, struct winlink *, struct window_pane *);
/* Check if this window should suspend reading. */
int
server_window_backoff(struct window_pane *wp)
{
struct client *c;
u_int i;
if (!window_pane_visible(wp))
return (0);
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session == NULL)
continue;
if ((c->flags & (CLIENT_SUSPENDED|CLIENT_DEAD)) != 0)
continue;
if (c->session->curw->window != wp->window)
continue;
if (EVBUFFER_LENGTH(c->tty.event->output) > BACKOFF_THRESHOLD)
return (1);
}
return (0);
}
/* Window functions that need to happen every loop. */
void
server_window_loop(void)
{
struct window *w;
struct winlink *wl;
struct window_pane *wp;
struct session *s;
u_int i, j;
for (i = 0; i < ARRAY_LENGTH(&windows); i++) {
w = ARRAY_ITEM(&windows, i);
if (w == NULL)
continue;
TAILQ_FOREACH(wp, &w->panes, entry) {
if (wp->fd == -1)
continue;
if (!(wp->flags & PANE_FREEZE)) {
if (server_window_backoff(wp))
bufferevent_disable(wp->event, EV_READ);
else
bufferevent_enable(wp->event, EV_READ);
}
}
for (j = 0; j < ARRAY_LENGTH(&sessions); j++) {
s = ARRAY_ITEM(&sessions, j);
if (s == NULL)
continue;
wl = session_has(s, w);
if (wl == NULL)
continue;
if (server_window_check_bell(s, wl) ||
server_window_check_activity(s, wl))
server_status_session(s);
TAILQ_FOREACH(wp, &w->panes, entry)
server_window_check_content(s, wl, wp);
}
w->flags &= ~(WINDOW_BELL|WINDOW_ACTIVITY);
}
}
/* Check for bell in window. */
int
server_window_check_bell(struct session *s, struct winlink *wl)
{
struct client *c;
struct window *w = wl->window;
u_int i;
int action, visual;
if (!(w->flags & WINDOW_BELL) || wl->flags & WINLINK_BELL)
return (0);
if (s->curw != wl)
wl->flags |= WINLINK_BELL;
action = options_get_number(&s->options, "bell-action");
switch (action) {
case BELL_ANY:
if (s->flags & SESSION_UNATTACHED)
break;
visual = options_get_number(&s->options, "visual-bell");
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session != s)
continue;
if (!visual) {
tty_putcode(&c->tty, TTYC_BEL);
continue;
}
if (c->session->curw->window == w) {
status_message_set(c, "Bell in current window");
continue;
}
status_message_set(c, "Bell in window %u",
winlink_find_by_window(&s->windows, w)->idx);
}
break;
case BELL_CURRENT:
if (s->flags & SESSION_UNATTACHED)
break;
visual = options_get_number(&s->options, "visual-bell");
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session != s)
continue;
if (c->session->curw->window != w)
continue;
if (!visual) {
tty_putcode(&c->tty, TTYC_BEL);
continue;
}
status_message_set(c, "Bell in current window");
}
break;
}
return (1);
}
/* Check for activity in window. */
int
server_window_check_activity(struct session *s, struct winlink *wl)
{
struct client *c;
struct window *w = wl->window;
u_int i;
if (!(w->flags & WINDOW_ACTIVITY) || wl->flags & WINLINK_ACTIVITY)
return (0);
if (s->curw == wl)
return (0);
if (!options_get_number(&w->options, "monitor-activity"))
return (0);
wl->flags |= WINLINK_ACTIVITY;
if (options_get_number(&s->options, "visual-activity")) {
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session != s)
continue;
status_message_set(c, "Activity in window %u",
winlink_find_by_window(&s->windows, w)->idx);
}
}
return (1);
}
/* Check for content change in window. */
int
server_window_check_content(
struct session *s, struct winlink *wl, struct window_pane *wp)
{
struct client *c;
struct window *w = wl->window;
u_int i;
char *found, *ptr;
/* Activity flag must be set for new content. */
if (!(w->flags & WINDOW_ACTIVITY) || wl->flags & WINLINK_CONTENT)
return (0);
if (s->curw == wl)
return (0);
ptr = options_get_string(&w->options, "monitor-content");
if (ptr == NULL || *ptr == '\0')
return (0);
if ((found = window_pane_search(wp, ptr, NULL)) == NULL)
return (0);
xfree(found);
wl->flags |= WINLINK_CONTENT;
if (options_get_number(&s->options, "visual-content")) {
for (i = 0; i < ARRAY_LENGTH(&clients); i++) {
c = ARRAY_ITEM(&clients, i);
if (c == NULL || c->session != s)
continue;
status_message_set(c, "Content in window %u",
winlink_find_by_window(&s->windows, w)->idx);
}
}
return (1);
}