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Get rid of the PANE_HIDDEN flag in favour of a function, and moving the
decision for whether or not a pane should be drawn out of the layout code and
into the redraw code.

This is needed for the new layout design, getting it in now to make that easier
to work on.

/* $OpenBSD: cmd-select-pane.c,v 1.3 2009/07/14 07:23:36 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.
 */

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

const struct cmd_entry cmd_select_pane_entry = {
	"select-pane", "selectp",
	CMD_PANE_WINDOW_USAGE,
	0, 0,
	cmd_pane_init,
	cmd_pane_parse,
	cmd_select_pane_exec,
       	cmd_pane_send,
	cmd_pane_recv,
	cmd_pane_free,
	cmd_pane_print
};

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

	if ((wl = cmd_find_window(ctx, data->target, NULL)) == NULL)
		return (-1);
	if (data->pane == -1)
		wp = wl->window->active;
	else {
		wp = window_pane_at_index(wl->window, data->pane);
		if (wp == NULL) {
			ctx->error(ctx, "no pane: %d", data->pane);
			return (-1);
		}
	}

	if (!window_pane_visible(wp)) {
		ctx->error(ctx, "pane %d is not visible", data->pane);
		return (-1);
	}
	window_set_active_pane(wl->window, wp);
	layout_refresh(wl->window, 1);

	return (0);
}