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/* $OpenBSD: notify.c,v 1.11 2016/10/15 00:09:30 nicm Exp $ */
/*
* Copyright (c) 2012 George Nachman <tmux@georgester.com>
*
* 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 <sys/queue.h>
#include <stdlib.h>
#include "tmux.h"
enum notify_type {
NOTIFY_WINDOW_LAYOUT_CHANGED,
NOTIFY_WINDOW_UNLINKED,
NOTIFY_WINDOW_LINKED,
NOTIFY_WINDOW_RENAMED,
NOTIFY_ATTACHED_SESSION_CHANGED,
NOTIFY_SESSION_RENAMED,
NOTIFY_SESSION_CREATED,
NOTIFY_SESSION_CLOSED
};
static const char *notify_hooks[] = {
"window-layout-changed",
NULL, /* "window-unlinked", */
NULL, /* "window-linked", */
"window-renamed",
NULL, /* "attached-session-changed", */
"session-renamed",
NULL, /* "session-created", */
NULL, /* "session-closed" */
};
struct notify_entry {
enum notify_type type;
struct client *client;
struct session *session;
struct window *window;
TAILQ_ENTRY(notify_entry) entry;
};
TAILQ_HEAD(notify_queue, notify_entry);
static struct notify_queue notify_queue = TAILQ_HEAD_INITIALIZER(notify_queue);
static void notify_add(enum notify_type, struct client *, struct session *,
struct window *);
static void
notify_hook(struct notify_entry *ne)
{
const char *name;
struct cmd_find_state fs;
struct hook *hook;
struct cmd_q *hooks_cmdq;
name = notify_hooks[ne->type];
if (name == NULL)
return;
cmd_find_clear_state(&fs, NULL, 0);
if (ne->session != NULL && ne->window != NULL)
cmd_find_from_session_window(&fs, ne->session, ne->window);
else if (ne->window != NULL)
cmd_find_from_window(&fs, ne->window);
else if (ne->session != NULL)
cmd_find_from_session(&fs, ne->session);
if (cmd_find_empty_state(&fs) || !cmd_find_valid_state(&fs))
return;
hook = hooks_find(fs.s->hooks, name);
if (hook == NULL)
return;
log_debug("notify hook %s", name);
hooks_cmdq = cmdq_new(NULL);
hooks_cmdq->flags |= CMD_Q_NOHOOKS;
cmd_find_copy_state(&hooks_cmdq->current, &fs);
hooks_cmdq->parent = NULL;
cmdq_run(hooks_cmdq, hook->cmdlist, NULL);
cmdq_free(hooks_cmdq);
}
static void
notify_add(enum notify_type type, struct client *c, struct session *s,
struct window *w)
{
struct notify_entry *ne;
ne = xcalloc(1, sizeof *ne);
ne->type = type;
ne->client = c;
ne->session = s;
ne->window = w;
TAILQ_INSERT_TAIL(¬ify_queue, ne, entry);
if (c != NULL)
c->references++;
if (s != NULL)
s->references++;
if (w != NULL)
w->references++;
}
void
notify_drain(void)
{
struct notify_entry *ne, *ne1;
TAILQ_FOREACH_SAFE(ne, ¬ify_queue, entry, ne1) {
switch (ne->type) {
case NOTIFY_WINDOW_LAYOUT_CHANGED:
control_notify_window_layout_changed(ne->window);
break;
case NOTIFY_WINDOW_UNLINKED:
control_notify_window_unlinked(ne->session, ne->window);
break;
case NOTIFY_WINDOW_LINKED:
control_notify_window_linked(ne->session, ne->window);
break;
case NOTIFY_WINDOW_RENAMED:
control_notify_window_renamed(ne->window);
break;
case NOTIFY_ATTACHED_SESSION_CHANGED:
control_notify_attached_session_changed(ne->client);
break;
case NOTIFY_SESSION_RENAMED:
control_notify_session_renamed(ne->session);
break;
case NOTIFY_SESSION_CREATED:
control_notify_session_created(ne->session);
break;
case NOTIFY_SESSION_CLOSED:
control_notify_session_close(ne->session);
break;
}
TAILQ_REMOVE(¬ify_queue, ne, entry);
notify_hook(ne);
if (ne->client != NULL)
server_client_unref(ne->client);
if (ne->session != NULL)
session_unref(ne->session);
if (ne->window != NULL)
window_remove_ref(ne->window);
free(ne);
}
}
void
notify_input(struct window_pane *wp, struct evbuffer *input)
{
struct client *c;
TAILQ_FOREACH(c, &clients, entry) {
if (c->flags & CLIENT_CONTROL)
control_notify_input(c, wp, input);
}
}
void
notify_window_layout_changed(struct window *w)
{
notify_add(NOTIFY_WINDOW_LAYOUT_CHANGED, NULL, NULL, w);
notify_drain();
}
void
notify_window_unlinked(struct session *s, struct window *w)
{
notify_add(NOTIFY_WINDOW_UNLINKED, NULL, s, w);
notify_drain();
}
void
notify_window_linked(struct session *s, struct window *w)
{
notify_add(NOTIFY_WINDOW_LINKED, NULL, s, w);
notify_drain();
}
void
notify_window_renamed(struct window *w)
{
notify_add(NOTIFY_WINDOW_RENAMED, NULL, NULL, w);
notify_drain();
}
void
notify_attached_session_changed(struct client *c)
{
notify_add(NOTIFY_ATTACHED_SESSION_CHANGED, c, NULL, NULL);
notify_drain();
}
void
notify_session_renamed(struct session *s)
{
notify_add(NOTIFY_SESSION_RENAMED, NULL, s, NULL);
notify_drain();
}
void
notify_session_created(struct session *s)
{
notify_add(NOTIFY_SESSION_CREATED, NULL, s, NULL);
notify_drain();
}
void
notify_session_closed(struct session *s)
{
notify_add(NOTIFY_SESSION_CLOSED, NULL, s, NULL);
notify_drain();
}
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