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Annotation of embedaddon/tmux/cmd-select-layout.c, revision 1.1.1.1

1.1       misho       1: /* $OpenBSD$ */
                      2: 
                      3: /*
                      4:  * Copyright (c) 2009 Nicholas Marriott <nicholas.marriott@gmail.com>
                      5:  *
                      6:  * Permission to use, copy, modify, and distribute this software for any
                      7:  * purpose with or without fee is hereby granted, provided that the above
                      8:  * copyright notice and this permission notice appear in all copies.
                      9:  *
                     10:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     11:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     12:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     13:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     14:  * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
                     15:  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                     16:  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     17:  */
                     18: 
                     19: #include <sys/types.h>
                     20: 
                     21: #include <stdlib.h>
                     22: 
                     23: #include "tmux.h"
                     24: 
                     25: /*
                     26:  * Switch window to selected layout.
                     27:  */
                     28: 
                     29: static enum cmd_retval cmd_select_layout_exec(struct cmd *,
                     30:                            struct cmdq_item *);
                     31: 
                     32: const struct cmd_entry cmd_select_layout_entry = {
                     33:        .name = "select-layout",
                     34:        .alias = "selectl",
                     35: 
                     36:        .args = { "nopt:", 0, 1 },
                     37:        .usage = "[-nop] " CMD_TARGET_WINDOW_USAGE " [layout-name]",
                     38: 
                     39:        .tflag = CMD_WINDOW,
                     40: 
                     41:        .flags = CMD_AFTERHOOK,
                     42:        .exec = cmd_select_layout_exec
                     43: };
                     44: 
                     45: const struct cmd_entry cmd_next_layout_entry = {
                     46:        .name = "next-layout",
                     47:        .alias = "nextl",
                     48: 
                     49:        .args = { "t:", 0, 0 },
                     50:        .usage = CMD_TARGET_WINDOW_USAGE,
                     51: 
                     52:        .tflag = CMD_WINDOW,
                     53: 
                     54:        .flags = CMD_AFTERHOOK,
                     55:        .exec = cmd_select_layout_exec
                     56: };
                     57: 
                     58: const struct cmd_entry cmd_previous_layout_entry = {
                     59:        .name = "previous-layout",
                     60:        .alias = "prevl",
                     61: 
                     62:        .args = { "t:", 0, 0 },
                     63:        .usage = CMD_TARGET_WINDOW_USAGE,
                     64: 
                     65:        .tflag = CMD_WINDOW,
                     66: 
                     67:        .flags = CMD_AFTERHOOK,
                     68:        .exec = cmd_select_layout_exec
                     69: };
                     70: 
                     71: static enum cmd_retval
                     72: cmd_select_layout_exec(struct cmd *self, struct cmdq_item *item)
                     73: {
                     74:        struct args     *args = self->args;
                     75:        struct winlink  *wl = item->state.tflag.wl;
                     76:        struct window   *w;
                     77:        const char      *layoutname;
                     78:        char            *oldlayout;
                     79:        int              next, previous, layout;
                     80: 
                     81:        w = wl->window;
                     82:        server_unzoom_window(w);
                     83: 
                     84:        next = self->entry == &cmd_next_layout_entry;
                     85:        if (args_has(args, 'n'))
                     86:                next = 1;
                     87:        previous = self->entry == &cmd_previous_layout_entry;
                     88:        if (args_has(args, 'p'))
                     89:                previous = 1;
                     90: 
                     91:        oldlayout = w->old_layout;
                     92:        w->old_layout = layout_dump(w->layout_root);
                     93: 
                     94:        if (next || previous) {
                     95:                if (next)
                     96:                        layout_set_next(w);
                     97:                else
                     98:                        layout_set_previous(w);
                     99:                goto changed;
                    100:        }
                    101: 
                    102:        if (!args_has(args, 'o')) {
                    103:                if (args->argc == 0)
                    104:                        layout = w->lastlayout;
                    105:                else
                    106:                        layout = layout_set_lookup(args->argv[0]);
                    107:                if (layout != -1) {
                    108:                        layout_set_select(w, layout);
                    109:                        goto changed;
                    110:                }
                    111:        }
                    112: 
                    113:        if (args->argc != 0)
                    114:                layoutname = args->argv[0];
                    115:        else if (args_has(args, 'o'))
                    116:                layoutname = oldlayout;
                    117:        else
                    118:                layoutname = NULL;
                    119: 
                    120:        if (layoutname != NULL) {
                    121:                if (layout_parse(w, layoutname) == -1) {
                    122:                        cmdq_error(item, "can't set layout: %s", layoutname);
                    123:                        goto error;
                    124:                }
                    125:                goto changed;
                    126:        }
                    127: 
                    128:        free(oldlayout);
                    129:        return (CMD_RETURN_NORMAL);
                    130: 
                    131: changed:
                    132:        free(oldlayout);
                    133:        server_redraw_window(w);
                    134:        return (CMD_RETURN_NORMAL);
                    135: 
                    136: error:
                    137:        free(w->old_layout);
                    138:        w->old_layout = oldlayout;
                    139:        return (CMD_RETURN_ERROR);
                    140: }