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Support up, down, left, right movement through panes with -UDLR flags to
select-pane.

Also REMOVE the up- and down-pane commands: equivalent behaviour is now
available using -t :.+ and -t :.-.

/* $OpenBSD: cmd-select-pane.c,v 1.10 2010/03/22 19:07:52 nicm 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 "tmux.h"

/*
 * Select pane.
 */

void	cmd_select_pane_init(struct cmd *, int);
int	cmd_select_pane_exec(struct cmd *, struct cmd_ctx *);

const struct cmd_entry cmd_select_pane_entry = {
	"select-pane", "selectp",
	"[-DLRU] " CMD_TARGET_PANE_USAGE,
	0, "DLRU",
	cmd_select_pane_init,
	cmd_target_parse,
	cmd_select_pane_exec,
	cmd_target_free,
	cmd_target_print
};

void
cmd_select_pane_init(struct cmd *self, int key)
{
	struct cmd_target_data	*data;

	cmd_target_init(self, key);
	data = self->data;

	if (key == KEYC_UP)
		cmd_set_flag(&data->chflags, 'U');
	if (key == KEYC_DOWN)
		cmd_set_flag(&data->chflags, 'D');
	if (key == KEYC_LEFT)
		cmd_set_flag(&data->chflags, 'L');
	if (key == KEYC_RIGHT)
		cmd_set_flag(&data->chflags, 'R');
	if (key == 'o')
		data->target = xstrdup(":.+");
}

int
cmd_select_pane_exec(struct cmd *self, struct cmd_ctx *ctx)
{
	struct cmd_target_data	*data = self->data;
	struct winlink		*wl;
	struct window_pane	*wp;

	if ((wl = cmd_find_pane(ctx, data->target, NULL, &wp)) == NULL)
		return (-1);

	if (!window_pane_visible(wp)) {
		ctx->error(ctx, "pane not visible: %s", data->target);
		return (-1);
	}

	if (cmd_check_flag(data->chflags, 'L'))
		wp = window_pane_find_left(wp);
	else if (cmd_check_flag(data->chflags, 'R'))
		wp = window_pane_find_right(wp);
	else if (cmd_check_flag(data->chflags, 'U'))
		wp = window_pane_find_up(wp);
	else if (cmd_check_flag(data->chflags, 'D'))
		wp = window_pane_find_down(wp);
	if (wp == NULL) {
		ctx->error(ctx, "pane not found");
		return (-1);
	}

	window_set_active_pane(wl->window, wp);
	server_status_window(wl->window);
	server_redraw_window_borders(wl->window);

	return (0);
}