tmate/cmd-switch-client.c
Nicholas Marriott 3964309c67 Add a command queue to standardize and simplify commands that call other
commands and allow a command to block execution of subsequent commands. This
allows run-shell and if-shell to be synchronous which has been much requested.

Each client has a default command queue and commands are consumed one at a time
from it. A command may suspend execution from the queue by returning
CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example
run-shell does this from the callback that is fired after the job is freed.

When the command queue becomes empty, command clients are automatically exited
(unless attaching). A callback is also fired - this is used for nested commands
in, for example, if-shell which can block execution of the client's cmdq until
a new cmdq becomes empty.

Also merge all the old error/info/print functions together and lose the old
curclient/cmdclient distinction - a cmdq is bound to one client (or none if in
the configuration file), this is a command client if c->session is NULL
otherwise an attached client.
2013-02-23 22:25:58 +00:00

115 lines
3.0 KiB
C

/* $Id$ */
/*
* Copyright (c) 2007 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 <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Switch client to a different session.
*/
void cmd_switch_client_key_binding(struct cmd *, int);
enum cmd_retval cmd_switch_client_exec(struct cmd *, struct cmd_q *);
const struct cmd_entry cmd_switch_client_entry = {
"switch-client", "switchc",
"lc:npt:r", 0, 0,
"[-lnpr] [-c target-client] [-t target-session]",
CMD_READONLY,
cmd_switch_client_key_binding,
NULL,
cmd_switch_client_exec
};
void
cmd_switch_client_key_binding(struct cmd *self, int key)
{
self->args = args_create(0);
switch (key) {
case '(':
args_set(self->args, 'p', NULL);
break;
case ')':
args_set(self->args, 'n', NULL);
break;
case 'L':
args_set(self->args, 'l', NULL);
break;
}
}
enum cmd_retval
cmd_switch_client_exec(struct cmd *self, struct cmd_q *cmdq)
{
struct args *args = self->args;
struct client *c;
struct session *s;
if ((c = cmd_find_client(cmdq, args_get(args, 'c'), 0)) == NULL)
return (CMD_RETURN_ERROR);
if (args_has(args, 'r')) {
if (c->flags & CLIENT_READONLY) {
c->flags &= ~CLIENT_READONLY;
cmdq_info(cmdq, "made client writable");
} else {
c->flags |= CLIENT_READONLY;
cmdq_info(cmdq, "made client read-only");
}
}
s = NULL;
if (args_has(args, 'n')) {
if ((s = session_next_session(c->session)) == NULL) {
cmdq_error(cmdq, "can't find next session");
return (CMD_RETURN_ERROR);
}
} else if (args_has(args, 'p')) {
if ((s = session_previous_session(c->session)) == NULL) {
cmdq_error(cmdq, "can't find previous session");
return (CMD_RETURN_ERROR);
}
} else if (args_has(args, 'l')) {
if (c->last_session != NULL && session_alive(c->last_session))
s = c->last_session;
if (s == NULL) {
cmdq_error(cmdq, "can't find last session");
return (CMD_RETURN_ERROR);
}
} else
s = cmd_find_session(cmdq, args_get(args, 't'), 0);
if (s == NULL)
return (CMD_RETURN_ERROR);
if (c->session != NULL)
c->last_session = c->session;
c->session = s;
session_update_activity(s);
recalculate_sizes();
server_check_unattached();
server_redraw_client(c);
s->curw->flags &= ~WINLINK_ALERTFLAGS;
return (CMD_RETURN_NORMAL);
}