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Rewrite of choose mode, both to simplify and tidy the code and to add
some modern features.

Now the common code is in mode-tree.c, which provides an API used by the
three modes now separated into window-{buffer,client,tree}.c. Buffer
mode shows buffers, client mode clients and tree mode a tree of
sessions, windows and panes.

Each mode has a common set of key bindings plus a few that are specific
to the mode. Other changes are:

- each mode has a preview pane: for buffers this is the buffer content
  (very useful), for others it is a preview of the pane;

- items may be sorted in different ways ('O' key);

- multiple items may be tagged and an operation applied to all of them
  (for example, to delete multiple buffers at once);

- in tree mode a command may be run on the selected item (session,
  window, pane) or on tagged items (key ':');

- displayed items may be filtered in tree mode by using a format (this
  is used to implement find-window) (key 'f');

- the custom format (-F) for the display is no longer available;

- shortcut keys change from 0-9, a-z, A-Z which was always a bit weird
  with keys used for other uses to 0-9, M-a to M-z.

Now that the code is simpler, other improvements will come later.

Primary key bindings for each mode are documented under the commands in
the man page (choose-buffer, choose-client, choose-tree).

Parts written by Thomas Adam.

/* $OpenBSD: cmd-find-window.c,v 1.43 2017/05/30 21:44:59 nicm Exp $ */

/*
 * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.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 <stdlib.h>

#include "tmux.h"

/*
 * Find window containing text.
 */

static enum cmd_retval	cmd_find_window_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_find_window_entry = {
	.name = "find-window",
	.alias = "findw",

	.args = { "CNt:T", 1, 1 },
	.usage = "[-CNT] " CMD_TARGET_PANE_USAGE " match-string",

	.target = { 't', CMD_FIND_PANE, 0 },

	.flags = 0,
	.exec = cmd_find_window_exec
};

static enum cmd_retval
cmd_find_window_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args		*args = self->args, *new_args;
	struct window_pane	*wp = item->target.wp;
	const char		*s = args->argv[0];
	char			*filter, *argv = { NULL };
	int			 C, N, T;

	C = args_has(args, 'C');
	N = args_has(args, 'N');
	T = args_has(args, 'T');

	if (!C && !N && !T)
		C = N = T = 1;

	if (C && N && T) {
		xasprintf(&filter,
		    "#{||:"
		    "#{C:%s},#{||:#{m:*%s*,#{window_name}},"
		    "#{m:*%s*,#{pane_title}}}}",
		    s, s, s);
	} else if (C && N) {
		xasprintf(&filter,
		    "#{||:#{C:%s},#{m:*%s*,#{window_name}}}",
		    s, s);
	} else if (C && T) {
		xasprintf(&filter,
		    "#{||:#{C:%s},#{m:*%s*,#{pane_title}}}",
		    s, s);
	} else if (N && T) {
		xasprintf(&filter,
		    "#{||:#{m:*%s*,#{window_name}},#{m:*%s*,#{pane_title}}}",
		    s, s);
	} else if (C)
		xasprintf(&filter, "#{C:%s}", s);
	else if (N)
		xasprintf(&filter, "#{m:*%s*,#{window_name}}", s);
	else if (T)
		xasprintf(&filter, "#{m:*%s*,#{pane_title}}", s);

	new_args = args_parse("", 1, &argv);
	args_set(new_args, 'f', filter);

	window_pane_set_mode(wp, &window_tree_mode, &item->target, new_args);

	args_free(new_args);
	free(filter);

	return (CMD_RETURN_NORMAL);
}