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