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Annotation of src/usr.bin/tmux/window.c, Revision 1.215

1.215   ! nicm        1: /* $OpenBSD: window.c,v 1.214 2018/11/19 13:35:41 nicm Exp $ */
1.1       nicm        2:
                      3: /*
1.156     nicm        4:  * Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1       nicm        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>
1.162     nicm       20: #include <sys/ioctl.h>
1.1       nicm       21:
                     22: #include <errno.h>
                     23: #include <fcntl.h>
1.5       nicm       24: #include <fnmatch.h>
1.203     nicm       25: #include <signal.h>
1.1       nicm       26: #include <stdint.h>
                     27: #include <stdlib.h>
                     28: #include <string.h>
                     29: #include <termios.h>
1.163     nicm       30: #include <time.h>
1.1       nicm       31: #include <unistd.h>
                     32: #include <util.h>
1.198     nicm       33: #include <vis.h>
1.1       nicm       34:
                     35: #include "tmux.h"
                     36:
                     37: /*
1.14      nicm       38:  * Each window is attached to a number of panes, each of which is a pty. This
1.1       nicm       39:  * file contains code to handle them.
                     40:  *
                     41:  * A pane has two buffers attached, these are filled and emptied by the main
                     42:  * server poll loop. Output data is received from pty's in screen format,
                     43:  * translated and returned as a series of escape sequences and strings via
                     44:  * input_parse (in input.c). Input data is received as key codes and written
                     45:  * directly via input_key.
                     46:  *
                     47:  * Each pane also has a "virtual" screen (screen.c) which contains the current
                     48:  * state and is redisplayed when the window is reattached to a client.
                     49:  *
                     50:  * Windows are stored directly on a global array and wrapped in any number of
                     51:  * winlink structs to be linked onto local session RB trees. A reference count
                     52:  * is maintained and a window removed from the global list and destroyed when
                     53:  * it reaches zero.
                     54:  */
1.124     nicm       55:
1.1       nicm       56: /* Global window list. */
                     57: struct windows windows;
                     58:
1.64      nicm       59: /* Global panes tree. */
                     60: struct window_pane_tree all_window_panes;
1.166     nicm       61: static u_int   next_window_pane_id;
                     62: static u_int   next_window_id;
                     63: static u_int   next_active_point;
1.37      nicm       64:
1.174     nicm       65: static void    window_destroy(struct window *);
                     66:
1.169     nicm       67: static struct window_pane *window_pane_create(struct window *, u_int, u_int,
                     68:                    u_int);
                     69: static void    window_pane_destroy(struct window_pane *);
                     70:
1.166     nicm       71: static void    window_pane_read_callback(struct bufferevent *, void *);
                     72: static void    window_pane_error_callback(struct bufferevent *, short, void *);
                     73:
1.169     nicm       74: static int     winlink_next_index(struct winlinks *, int);
                     75:
1.166     nicm       76: static struct window_pane *window_pane_choose_best(struct window_pane **,
                     77:                    u_int);
1.109     nicm       78:
1.122     nicm       79: RB_GENERATE(windows, window, entry, window_cmp);
1.169     nicm       80: RB_GENERATE(winlinks, winlink, entry, winlink_cmp);
                     81: RB_GENERATE(window_pane_tree, window_pane, tree_entry, window_pane_cmp);
1.122     nicm       82:
                     83: int
                     84: window_cmp(struct window *w1, struct window *w2)
                     85: {
                     86:        return (w1->id - w2->id);
                     87: }
                     88:
1.1       nicm       89: int
                     90: winlink_cmp(struct winlink *wl1, struct winlink *wl2)
                     91: {
                     92:        return (wl1->idx - wl2->idx);
1.12      nicm       93: }
                     94:
1.64      nicm       95: int
                     96: window_pane_cmp(struct window_pane *wp1, struct window_pane *wp2)
                     97: {
                     98:        return (wp1->id - wp2->id);
                     99: }
                    100:
1.12      nicm      101: struct winlink *
                    102: winlink_find_by_window(struct winlinks *wwl, struct window *w)
                    103: {
                    104:        struct winlink  *wl;
                    105:
                    106:        RB_FOREACH(wl, winlinks, wwl) {
                    107:                if (wl->window == w)
                    108:                        return (wl);
                    109:        }
                    110:
                    111:        return (NULL);
1.1       nicm      112: }
                    113:
                    114: struct winlink *
                    115: winlink_find_by_index(struct winlinks *wwl, int idx)
                    116: {
                    117:        struct winlink  wl;
                    118:
                    119:        if (idx < 0)
                    120:                fatalx("bad index");
                    121:
                    122:        wl.idx = idx;
                    123:        return (RB_FIND(winlinks, wwl, &wl));
                    124: }
                    125:
1.71      nicm      126: struct winlink *
                    127: winlink_find_by_window_id(struct winlinks *wwl, u_int id)
                    128: {
                    129:        struct winlink *wl;
                    130:
                    131:        RB_FOREACH(wl, winlinks, wwl) {
                    132:                if (wl->window->id == id)
                    133:                        return (wl);
                    134:        }
1.78      nicm      135:        return (NULL);
1.71      nicm      136: }
                    137:
1.169     nicm      138: static int
1.22      nicm      139: winlink_next_index(struct winlinks *wwl, int idx)
1.1       nicm      140: {
1.22      nicm      141:        int     i;
1.1       nicm      142:
1.22      nicm      143:        i = idx;
                    144:        do {
1.1       nicm      145:                if (winlink_find_by_index(wwl, i) == NULL)
                    146:                        return (i);
1.22      nicm      147:                if (i == INT_MAX)
                    148:                        i = 0;
                    149:                else
                    150:                        i++;
                    151:        } while (i != idx);
                    152:        return (-1);
1.1       nicm      153: }
                    154:
                    155: u_int
                    156: winlink_count(struct winlinks *wwl)
                    157: {
                    158:        struct winlink  *wl;
                    159:        u_int            n;
                    160:
                    161:        n = 0;
                    162:        RB_FOREACH(wl, winlinks, wwl)
                    163:                n++;
                    164:
                    165:        return (n);
                    166: }
                    167:
                    168: struct winlink *
1.63      nicm      169: winlink_add(struct winlinks *wwl, int idx)
1.1       nicm      170: {
                    171:        struct winlink  *wl;
                    172:
1.22      nicm      173:        if (idx < 0) {
                    174:                if ((idx = winlink_next_index(wwl, -idx - 1)) == -1)
                    175:                        return (NULL);
                    176:        } else if (winlink_find_by_index(wwl, idx) != NULL)
1.1       nicm      177:                return (NULL);
                    178:
                    179:        wl = xcalloc(1, sizeof *wl);
                    180:        wl->idx = idx;
                    181:        RB_INSERT(winlinks, wwl, wl);
                    182:
1.63      nicm      183:        return (wl);
                    184: }
                    185:
                    186: void
                    187: winlink_set_window(struct winlink *wl, struct window *w)
                    188: {
1.174     nicm      189:        if (wl->window != NULL) {
                    190:                TAILQ_REMOVE(&wl->window->winlinks, wl, wentry);
1.192     nicm      191:                window_remove_ref(wl->window, __func__);
1.174     nicm      192:        }
                    193:        TAILQ_INSERT_TAIL(&w->winlinks, wl, wentry);
1.63      nicm      194:        wl->window = w;
1.192     nicm      195:        window_add_ref(w, __func__);
1.1       nicm      196: }
                    197:
                    198: void
                    199: winlink_remove(struct winlinks *wwl, struct winlink *wl)
                    200: {
                    201:        struct window   *w = wl->window;
                    202:
1.174     nicm      203:        if (w != NULL) {
                    204:                TAILQ_REMOVE(&w->winlinks, wl, wentry);
1.192     nicm      205:                window_remove_ref(w, __func__);
1.174     nicm      206:        }
                    207:
1.1       nicm      208:        RB_REMOVE(winlinks, wwl, wl);
1.82      nicm      209:        free(wl->status_text);
                    210:        free(wl);
1.1       nicm      211: }
                    212:
                    213: struct winlink *
1.41      nicm      214: winlink_next(struct winlink *wl)
1.1       nicm      215: {
                    216:        return (RB_NEXT(winlinks, wwl, wl));
                    217: }
                    218:
                    219: struct winlink *
1.41      nicm      220: winlink_previous(struct winlink *wl)
1.1       nicm      221: {
                    222:        return (RB_PREV(winlinks, wwl, wl));
1.52      nicm      223: }
                    224:
                    225: struct winlink *
1.53      nicm      226: winlink_next_by_number(struct winlink *wl, struct session *s, int n)
1.52      nicm      227: {
                    228:        for (; n > 0; n--) {
                    229:                if ((wl = RB_NEXT(winlinks, wwl, wl)) == NULL)
1.53      nicm      230:                        wl = RB_MIN(winlinks, &s->windows);
1.52      nicm      231:        }
                    232:
                    233:        return (wl);
                    234: }
                    235:
                    236: struct winlink *
1.53      nicm      237: winlink_previous_by_number(struct winlink *wl, struct session *s, int n)
1.52      nicm      238: {
                    239:        for (; n > 0; n--) {
                    240:                if ((wl = RB_PREV(winlinks, wwl, wl)) == NULL)
1.53      nicm      241:                        wl = RB_MAX(winlinks, &s->windows);
1.52      nicm      242:        }
                    243:
                    244:        return (wl);
1.1       nicm      245: }
                    246:
                    247: void
                    248: winlink_stack_push(struct winlink_stack *stack, struct winlink *wl)
                    249: {
                    250:        if (wl == NULL)
                    251:                return;
                    252:
                    253:        winlink_stack_remove(stack, wl);
1.28      nicm      254:        TAILQ_INSERT_HEAD(stack, wl, sentry);
1.1       nicm      255: }
                    256:
                    257: void
                    258: winlink_stack_remove(struct winlink_stack *stack, struct winlink *wl)
                    259: {
                    260:        struct winlink  *wl2;
                    261:
                    262:        if (wl == NULL)
                    263:                return;
1.42      nicm      264:
1.28      nicm      265:        TAILQ_FOREACH(wl2, stack, sentry) {
1.1       nicm      266:                if (wl2 == wl) {
1.28      nicm      267:                        TAILQ_REMOVE(stack, wl, sentry);
1.1       nicm      268:                        return;
                    269:                }
                    270:        }
                    271: }
                    272:
                    273: struct window *
1.125     nicm      274: window_find_by_id_str(const char *s)
1.123     nicm      275: {
                    276:        const char      *errstr;
                    277:        u_int            id;
                    278:
                    279:        if (*s != '@')
                    280:                return (NULL);
                    281:
                    282:        id = strtonum(s + 1, 0, UINT_MAX, &errstr);
                    283:        if (errstr != NULL)
                    284:                return (NULL);
                    285:        return (window_find_by_id(id));
                    286: }
                    287:
                    288: struct window *
1.71      nicm      289: window_find_by_id(u_int id)
                    290: {
1.122     nicm      291:        struct window   w;
1.71      nicm      292:
1.122     nicm      293:        w.id = id;
                    294:        return (RB_FIND(windows, &windows, &w));
1.71      nicm      295: }
                    296:
1.143     nicm      297: void
                    298: window_update_activity(struct window *w)
                    299: {
                    300:        gettimeofday(&w->activity_time, NULL);
                    301:        alerts_queue(w, WINDOW_ACTIVITY);
                    302: }
                    303:
1.71      nicm      304: struct window *
1.171     nicm      305: window_create(u_int sx, u_int sy)
1.1       nicm      306: {
                    307:        struct window   *w;
                    308:
1.38      nicm      309:        w = xcalloc(1, sizeof *w);
1.1       nicm      310:        w->name = NULL;
1.160     nicm      311:        w->flags = WINDOW_STYLECHANGED;
1.1       nicm      312:
                    313:        TAILQ_INIT(&w->panes);
                    314:        w->active = NULL;
1.14      nicm      315:
1.17      nicm      316:        w->lastlayout = -1;
1.14      nicm      317:        w->layout_root = NULL;
1.42      nicm      318:
1.1       nicm      319:        w->sx = sx;
                    320:        w->sy = sy;
1.133     nicm      321:
1.146     nicm      322:        w->options = options_create(global_w_options);
1.1       nicm      323:
                    324:        w->references = 0;
1.174     nicm      325:        TAILQ_INIT(&w->winlinks);
1.1       nicm      326:
1.122     nicm      327:        w->id = next_window_id++;
1.129     nicm      328:        RB_INSERT(windows, &windows, w);
1.122     nicm      329:
1.143     nicm      330:        window_update_activity(w);
                    331:
1.1       nicm      332:        return (w);
                    333: }
                    334:
                    335: struct window *
1.171     nicm      336: window_create_spawn(const char *name, int argc, char **argv, const char *path,
1.147     nicm      337:     const char *shell, const char *cwd, struct environ *env,
                    338:     struct termios *tio, u_int sx, u_int sy, u_int hlimit, char **cause)
1.1       nicm      339: {
1.14      nicm      340:        struct window           *w;
                    341:        struct window_pane      *wp;
1.1       nicm      342:
1.171     nicm      343:        w = window_create(sx, sy);
1.208     nicm      344:        wp = window_add_pane(w, NULL, 0, 0, hlimit);
1.93      nicm      345:        layout_init(w, wp);
1.91      nicm      346:
1.171     nicm      347:        if (window_pane_spawn(wp, argc, argv, path, shell, cwd,
                    348:            env, tio, cause) != 0) {
1.1       nicm      349:                window_destroy(w);
                    350:                return (NULL);
                    351:        }
1.91      nicm      352:
1.1       nicm      353:        w->active = TAILQ_FIRST(&w->panes);
                    354:        if (name != NULL) {
                    355:                w->name = xstrdup(name);
1.146     nicm      356:                options_set_number(w->options, "automatic-rename", 0);
1.1       nicm      357:        } else
                    358:                w->name = default_window_name(w);
1.91      nicm      359:
1.193     nicm      360:        notify_window("window-pane-changed", w);
                    361:
1.1       nicm      362:        return (w);
                    363: }
                    364:
1.174     nicm      365: static void
1.1       nicm      366: window_destroy(struct window *w)
                    367: {
1.192     nicm      368:        log_debug("window @%u destroyed (%d references)", w->id, w->references);
1.174     nicm      369:
1.122     nicm      370:        RB_REMOVE(windows, &windows, w);
1.1       nicm      371:
1.14      nicm      372:        if (w->layout_root != NULL)
1.135     nicm      373:                layout_free_cell(w->layout_root);
                    374:        if (w->saved_layout_root != NULL)
                    375:                layout_free_cell(w->saved_layout_root);
1.127     nicm      376:        free(w->old_layout);
1.139     nicm      377:
1.141     nicm      378:        if (event_initialized(&w->name_event))
                    379:                evtimer_del(&w->name_event);
1.38      nicm      380:
1.143     nicm      381:        if (event_initialized(&w->alerts_timer))
                    382:                evtimer_del(&w->alerts_timer);
1.213     nicm      383:        if (event_initialized(&w->offset_timer))
                    384:                event_del(&w->offset_timer);
1.143     nicm      385:
1.146     nicm      386:        options_free(w->options);
1.1       nicm      387:
                    388:        window_destroy_panes(w);
                    389:
1.82      nicm      390:        free(w->name);
                    391:        free(w);
1.84      nicm      392: }
                    393:
1.200     nicm      394: int
                    395: window_pane_destroy_ready(struct window_pane *wp)
                    396: {
1.201     nicm      397:        int     n;
                    398:
                    399:        if (wp->pipe_fd != -1) {
                    400:                if (EVBUFFER_LENGTH(wp->pipe_event->output) != 0)
                    401:                        return (0);
                    402:                if (ioctl(wp->fd, FIONREAD, &n) != -1 && n > 0)
                    403:                        return (0);
                    404:        }
1.200     nicm      405:
                    406:        if (~wp->flags & PANE_EXITED)
                    407:                return (0);
                    408:        return (1);
                    409: }
                    410:
1.84      nicm      411: void
1.192     nicm      412: window_add_ref(struct window *w, const char *from)
                    413: {
                    414:        w->references++;
                    415:        log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
                    416: }
                    417:
                    418: void
                    419: window_remove_ref(struct window *w, const char *from)
1.84      nicm      420: {
                    421:        w->references--;
1.192     nicm      422:        log_debug("%s: @%u %s, now %d", __func__, w->id, from, w->references);
                    423:
1.84      nicm      424:        if (w->references == 0)
                    425:                window_destroy(w);
1.72      nicm      426: }
                    427:
                    428: void
                    429: window_set_name(struct window *w, const char *new_name)
                    430: {
1.82      nicm      431:        free(w->name);
1.198     nicm      432:        utf8_stravis(&w->name, new_name, VIS_OCTAL|VIS_CSTYLE|VIS_TAB|VIS_NL);
1.172     nicm      433:        notify_window("window-renamed", w);
1.1       nicm      434: }
                    435:
1.15      nicm      436: void
1.1       nicm      437: window_resize(struct window *w, u_int sx, u_int sy)
                    438: {
                    439:        w->sx = sx;
                    440:        w->sy = sy;
                    441: }
                    442:
1.114     nicm      443: int
1.118     nicm      444: window_has_pane(struct window *w, struct window_pane *wp)
                    445: {
                    446:        struct window_pane      *wp1;
                    447:
                    448:        TAILQ_FOREACH(wp1, &w->panes, entry) {
                    449:                if (wp1 == wp)
                    450:                        return (1);
                    451:        }
                    452:        return (0);
                    453: }
                    454:
                    455: int
1.1       nicm      456: window_set_active_pane(struct window *w, struct window_pane *wp)
                    457: {
1.185     nicm      458:        log_debug("%s: pane %%%u (was %%%u)", __func__, wp->id, w->active->id);
1.59      nicm      459:        if (wp == w->active)
1.114     nicm      460:                return (0);
1.58      nicm      461:        w->last = w->active;
1.1       nicm      462:        w->active = wp;
1.109     nicm      463:        w->active->active_point = next_active_point++;
1.136     nicm      464:        w->active->flags |= PANE_CHANGED;
1.213     nicm      465:        tty_update_window_offset(w);
1.193     nicm      466:        notify_window("window-pane-changed", w);
1.114     nicm      467:        return (1);
1.145     nicm      468: }
                    469:
                    470: void
                    471: window_redraw_active_switch(struct window *w, struct window_pane *wp)
                    472: {
1.177     nicm      473:        const struct grid_cell  *gc;
1.145     nicm      474:
                    475:        if (wp == w->active)
                    476:                return;
                    477:
                    478:        /*
                    479:         * If window-style and window-active-style are the same, we don't need
1.177     nicm      480:         * to redraw panes when switching active panes.
1.145     nicm      481:         */
1.177     nicm      482:        gc = options_get_style(w->options, "window-active-style");
                    483:        if (style_equal(gc, options_get_style(w->options, "window-style")))
1.145     nicm      484:                return;
1.177     nicm      485:
                    486:        /*
                    487:         * If the now active or inactive pane do not have a custom style or if
                    488:         * the palette is different, they need to be redrawn.
                    489:         */
1.178     nicm      490:        if (window_pane_get_palette(w->active, w->active->colgc.fg) != -1 ||
                    491:            window_pane_get_palette(w->active, w->active->colgc.bg) != -1 ||
1.177     nicm      492:            style_equal(&grid_default_cell, &w->active->colgc))
1.145     nicm      493:                w->active->flags |= PANE_REDRAW;
1.178     nicm      494:        if (window_pane_get_palette(wp, wp->colgc.fg) != -1 ||
                    495:            window_pane_get_palette(wp, wp->colgc.bg) != -1 ||
1.177     nicm      496:            style_equal(&grid_default_cell, &wp->colgc))
1.145     nicm      497:                wp->flags |= PANE_REDRAW;
1.29      nicm      498: }
                    499:
1.66      nicm      500: struct window_pane *
                    501: window_get_active_at(struct window *w, u_int x, u_int y)
1.29      nicm      502: {
                    503:        struct window_pane      *wp;
                    504:
                    505:        TAILQ_FOREACH(wp, &w->panes, entry) {
1.213     nicm      506:                 if (!window_pane_visible(wp))
                    507:                         continue;
1.66      nicm      508:                if (x < wp->xoff || x > wp->xoff + wp->sx)
1.29      nicm      509:                        continue;
1.66      nicm      510:                if (y < wp->yoff || y > wp->yoff + wp->sy)
1.29      nicm      511:                        continue;
1.66      nicm      512:                return (wp);
                    513:        }
                    514:        return (NULL);
                    515: }
                    516:
                    517: struct window_pane *
                    518: window_find_string(struct window *w, const char *s)
                    519: {
                    520:        u_int   x, y;
                    521:
                    522:        x = w->sx / 2;
                    523:        y = w->sy / 2;
                    524:
                    525:        if (strcasecmp(s, "top") == 0)
                    526:                y = 0;
                    527:        else if (strcasecmp(s, "bottom") == 0)
                    528:                y = w->sy - 1;
                    529:        else if (strcasecmp(s, "left") == 0)
                    530:                x = 0;
                    531:        else if (strcasecmp(s, "right") == 0)
                    532:                x = w->sx - 1;
                    533:        else if (strcasecmp(s, "top-left") == 0) {
                    534:                x = 0;
                    535:                y = 0;
                    536:        } else if (strcasecmp(s, "top-right") == 0) {
                    537:                x = w->sx - 1;
                    538:                y = 0;
                    539:        } else if (strcasecmp(s, "bottom-left") == 0) {
                    540:                x = 0;
                    541:                y = w->sy - 1;
                    542:        } else if (strcasecmp(s, "bottom-right") == 0) {
                    543:                x = w->sx - 1;
                    544:                y = w->sy - 1;
                    545:        } else
                    546:                return (NULL);
                    547:
                    548:        return (window_get_active_at(w, x, y));
1.1       nicm      549: }
                    550:
1.93      nicm      551: int
                    552: window_zoom(struct window_pane *wp)
                    553: {
                    554:        struct window           *w = wp->window;
                    555:        struct window_pane      *wp1;
                    556:
                    557:        if (w->flags & WINDOW_ZOOMED)
                    558:                return (-1);
                    559:
1.94      nicm      560:        if (window_count_panes(w) == 1)
                    561:                return (-1);
                    562:
1.93      nicm      563:        if (w->active != wp)
                    564:                window_set_active_pane(w, wp);
                    565:
                    566:        TAILQ_FOREACH(wp1, &w->panes, entry) {
                    567:                wp1->saved_layout_cell = wp1->layout_cell;
                    568:                wp1->layout_cell = NULL;
                    569:        }
                    570:
                    571:        w->saved_layout_root = w->layout_root;
                    572:        layout_init(w, wp);
                    573:        w->flags |= WINDOW_ZOOMED;
1.172     nicm      574:        notify_window("window-layout-changed", w);
1.93      nicm      575:
                    576:        return (0);
                    577: }
                    578:
                    579: int
                    580: window_unzoom(struct window *w)
                    581: {
1.97      nicm      582:        struct window_pane      *wp;
1.93      nicm      583:
                    584:        if (!(w->flags & WINDOW_ZOOMED))
                    585:                return (-1);
                    586:
                    587:        w->flags &= ~WINDOW_ZOOMED;
                    588:        layout_free(w);
                    589:        w->layout_root = w->saved_layout_root;
1.120     nicm      590:        w->saved_layout_root = NULL;
1.93      nicm      591:
1.97      nicm      592:        TAILQ_FOREACH(wp, &w->panes, entry) {
                    593:                wp->layout_cell = wp->saved_layout_cell;
                    594:                wp->saved_layout_cell = NULL;
1.93      nicm      595:        }
1.213     nicm      596:        layout_fix_panes(w);
1.172     nicm      597:        notify_window("window-layout-changed", w);
1.93      nicm      598:
                    599:        return (0);
                    600: }
                    601:
1.1       nicm      602: struct window_pane *
1.185     nicm      603: window_add_pane(struct window *w, struct window_pane *other, int before,
1.208     nicm      604:     int full_size, u_int hlimit)
1.1       nicm      605: {
                    606:        struct window_pane      *wp;
                    607:
1.185     nicm      608:        if (other == NULL)
                    609:                other = w->active;
                    610:
1.14      nicm      611:        wp = window_pane_create(w, w->sx, w->sy, hlimit);
1.186     nicm      612:        if (TAILQ_EMPTY(&w->panes)) {
                    613:                log_debug("%s: @%u at start", __func__, w->id);
1.1       nicm      614:                TAILQ_INSERT_HEAD(&w->panes, wp, entry);
1.186     nicm      615:        } else if (before) {
                    616:                log_debug("%s: @%u before %%%u", __func__, w->id, wp->id);
1.208     nicm      617:                if (full_size)
                    618:                        TAILQ_INSERT_HEAD(&w->panes, wp, entry);
                    619:                else
                    620:                        TAILQ_INSERT_BEFORE(other, wp, entry);
1.186     nicm      621:        } else {
                    622:                log_debug("%s: @%u after %%%u", __func__, w->id, wp->id);
1.208     nicm      623:                if (full_size)
                    624:                        TAILQ_INSERT_TAIL(&w->panes, wp, entry);
                    625:                else
                    626:                        TAILQ_INSERT_AFTER(&w->panes, other, wp, entry);
1.186     nicm      627:        }
1.1       nicm      628:        return (wp);
                    629: }
                    630:
                    631: void
1.105     nicm      632: window_lost_pane(struct window *w, struct window_pane *wp)
1.1       nicm      633: {
1.205     nicm      634:        log_debug("%s: @%u pane %%%u", __func__, w->id, wp->id);
                    635:
1.152     nicm      636:        if (wp == marked_pane.wp)
1.132     nicm      637:                server_clear_marked();
                    638:
1.57      nicm      639:        if (wp == w->active) {
1.58      nicm      640:                w->active = w->last;
                    641:                w->last = NULL;
                    642:                if (w->active == NULL) {
                    643:                        w->active = TAILQ_PREV(wp, window_panes, entry);
                    644:                        if (w->active == NULL)
                    645:                                w->active = TAILQ_NEXT(wp, entry);
                    646:                }
1.193     nicm      647:                if (w->active != NULL) {
1.151     nicm      648:                        w->active->flags |= PANE_CHANGED;
1.193     nicm      649:                        notify_window("window-pane-changed", w);
                    650:                }
1.58      nicm      651:        } else if (wp == w->last)
                    652:                w->last = NULL;
1.105     nicm      653: }
                    654:
                    655: void
                    656: window_remove_pane(struct window *w, struct window_pane *wp)
                    657: {
                    658:        window_lost_pane(w, wp);
1.1       nicm      659:
                    660:        TAILQ_REMOVE(&w->panes, wp, entry);
                    661:        window_pane_destroy(wp);
                    662: }
                    663:
                    664: struct window_pane *
                    665: window_pane_at_index(struct window *w, u_int idx)
                    666: {
                    667:        struct window_pane      *wp;
                    668:        u_int                    n;
                    669:
1.146     nicm      670:        n = options_get_number(w->options, "pane-base-index");
1.1       nicm      671:        TAILQ_FOREACH(wp, &w->panes, entry) {
                    672:                if (n == idx)
                    673:                        return (wp);
                    674:                n++;
                    675:        }
                    676:        return (NULL);
1.53      nicm      677: }
                    678:
                    679: struct window_pane *
                    680: window_pane_next_by_number(struct window *w, struct window_pane *wp, u_int n)
                    681: {
                    682:        for (; n > 0; n--) {
                    683:                if ((wp = TAILQ_NEXT(wp, entry)) == NULL)
                    684:                        wp = TAILQ_FIRST(&w->panes);
                    685:        }
                    686:
                    687:        return (wp);
                    688: }
                    689:
                    690: struct window_pane *
                    691: window_pane_previous_by_number(struct window *w, struct window_pane *wp,
                    692:     u_int n)
                    693: {
                    694:        for (; n > 0; n--) {
                    695:                if ((wp = TAILQ_PREV(wp, window_panes, entry)) == NULL)
                    696:                        wp = TAILQ_LAST(&w->panes, window_panes);
                    697:        }
                    698:
                    699:        return (wp);
1.13      nicm      700: }
                    701:
1.69      nicm      702: int
                    703: window_pane_index(struct window_pane *wp, u_int *i)
1.13      nicm      704: {
                    705:        struct window_pane      *wq;
1.69      nicm      706:        struct window           *w = wp->window;
1.13      nicm      707:
1.146     nicm      708:        *i = options_get_number(w->options, "pane-base-index");
1.13      nicm      709:        TAILQ_FOREACH(wq, &w->panes, entry) {
1.69      nicm      710:                if (wp == wq) {
                    711:                        return (0);
                    712:                }
                    713:                (*i)++;
1.13      nicm      714:        }
1.69      nicm      715:
                    716:        return (-1);
1.1       nicm      717: }
                    718:
                    719: u_int
                    720: window_count_panes(struct window *w)
                    721: {
                    722:        struct window_pane      *wp;
                    723:        u_int                    n;
                    724:
                    725:        n = 0;
                    726:        TAILQ_FOREACH(wp, &w->panes, entry)
                    727:                n++;
                    728:        return (n);
                    729: }
                    730:
                    731: void
                    732: window_destroy_panes(struct window *w)
                    733: {
                    734:        struct window_pane      *wp;
                    735:
                    736:        while (!TAILQ_EMPTY(&w->panes)) {
                    737:                wp = TAILQ_FIRST(&w->panes);
                    738:                TAILQ_REMOVE(&w->panes, wp, entry);
                    739:                window_pane_destroy(wp);
                    740:        }
1.61      nicm      741: }
                    742:
1.188     nicm      743: const char *
1.189     nicm      744: window_printable_flags(struct winlink *wl)
1.61      nicm      745: {
1.189     nicm      746:        struct session  *s = wl->session;
                    747:        static char      flags[32];
                    748:        int              pos;
1.61      nicm      749:
                    750:        pos = 0;
                    751:        if (wl->flags & WINLINK_ACTIVITY)
                    752:                flags[pos++] = '#';
                    753:        if (wl->flags & WINLINK_BELL)
                    754:                flags[pos++] = '!';
                    755:        if (wl->flags & WINLINK_SILENCE)
                    756:                flags[pos++] = '~';
                    757:        if (wl == s->curw)
                    758:                flags[pos++] = '*';
                    759:        if (wl == TAILQ_FIRST(&s->lastw))
                    760:                flags[pos++] = '-';
1.152     nicm      761:        if (server_check_marked() && wl == marked_pane.wl)
1.132     nicm      762:                flags[pos++] = 'M';
1.93      nicm      763:        if (wl->window->flags & WINDOW_ZOOMED)
                    764:                flags[pos++] = 'Z';
1.61      nicm      765:        flags[pos] = '\0';
1.188     nicm      766:        return (flags);
1.1       nicm      767: }
                    768:
1.123     nicm      769: struct window_pane *
                    770: window_pane_find_by_id_str(const char *s)
                    771: {
                    772:        const char      *errstr;
                    773:        u_int            id;
                    774:
                    775:        if (*s != '%')
                    776:                return (NULL);
                    777:
                    778:        id = strtonum(s + 1, 0, UINT_MAX, &errstr);
                    779:        if (errstr != NULL)
                    780:                return (NULL);
                    781:        return (window_pane_find_by_id(id));
                    782: }
                    783:
1.64      nicm      784: struct window_pane *
                    785: window_pane_find_by_id(u_int id)
                    786: {
                    787:        struct window_pane      wp;
                    788:
                    789:        wp.id = id;
                    790:        return (RB_FIND(window_pane_tree, &all_window_panes, &wp));
                    791: }
                    792:
1.169     nicm      793: static struct window_pane *
1.1       nicm      794: window_pane_create(struct window *w, u_int sx, u_int sy, u_int hlimit)
                    795: {
                    796:        struct window_pane      *wp;
1.140     nicm      797:        char                     host[HOST_NAME_MAX + 1];
1.1       nicm      798:
                    799:        wp = xcalloc(1, sizeof *wp);
                    800:        wp->window = w;
                    801:
1.71      nicm      802:        wp->id = next_window_pane_id++;
1.64      nicm      803:        RB_INSERT(window_pane_tree, &all_window_panes, wp);
                    804:
1.110     nicm      805:        wp->argc = 0;
                    806:        wp->argv = NULL;
1.23      nicm      807:        wp->shell = NULL;
1.147     nicm      808:        wp->cwd = NULL;
1.1       nicm      809:
                    810:        wp->fd = -1;
1.37      nicm      811:        wp->event = NULL;
1.1       nicm      812:
                    813:        wp->mode = NULL;
1.176     nicm      814:        wp->modeprefix = 1;
1.14      nicm      815:
                    816:        wp->layout_cell = NULL;
1.1       nicm      817:
                    818:        wp->xoff = 0;
1.42      nicm      819:        wp->yoff = 0;
1.1       nicm      820:
1.197     nicm      821:        wp->sx = wp->osx = sx;
                    822:        wp->sy = wp->osx = sy;
1.1       nicm      823:
1.32      nicm      824:        wp->pipe_fd = -1;
                    825:        wp->pipe_off = 0;
1.36      nicm      826:        wp->pipe_event = NULL;
1.32      nicm      827:
1.9       nicm      828:        wp->saved_grid = NULL;
1.117     nicm      829:
                    830:        memcpy(&wp->colgc, &grid_default_cell, sizeof wp->colgc);
1.9       nicm      831:
1.1       nicm      832:        screen_init(&wp->base, sx, sy, hlimit);
                    833:        wp->screen = &wp->base;
1.159     nicm      834:
                    835:        screen_init(&wp->status_screen, 1, 1, 0);
1.140     nicm      836:
                    837:        if (gethostname(host, sizeof host) == 0)
                    838:                screen_set_title(&wp->base, host);
1.1       nicm      839:
                    840:        input_init(wp);
                    841:
                    842:        return (wp);
                    843: }
                    844:
1.169     nicm      845: static void
1.1       nicm      846: window_pane_destroy(struct window_pane *wp)
                    847: {
1.55      nicm      848:        window_pane_reset_mode(wp);
1.194     nicm      849:        free(wp->searchstr);
1.55      nicm      850:
1.37      nicm      851:        if (wp->fd != -1) {
1.70      nicm      852:                bufferevent_free(wp->event);
1.1       nicm      853:                close(wp->fd);
1.37      nicm      854:        }
1.1       nicm      855:
                    856:        input_free(wp);
                    857:
                    858:        screen_free(&wp->base);
1.9       nicm      859:        if (wp->saved_grid != NULL)
                    860:                grid_destroy(wp->saved_grid);
1.1       nicm      861:
1.32      nicm      862:        if (wp->pipe_fd != -1) {
1.70      nicm      863:                bufferevent_free(wp->pipe_event);
1.32      nicm      864:                close(wp->pipe_fd);
                    865:        }
1.167     nicm      866:
                    867:        if (event_initialized(&wp->resize_timer))
                    868:                event_del(&wp->resize_timer);
1.32      nicm      869:
1.64      nicm      870:        RB_REMOVE(window_pane_tree, &all_window_panes, wp);
                    871:
1.147     nicm      872:        free((void *)wp->cwd);
1.82      nicm      873:        free(wp->shell);
1.110     nicm      874:        cmd_free_argv(wp->argc, wp->argv);
1.177     nicm      875:        free(wp->palette);
1.82      nicm      876:        free(wp);
1.1       nicm      877: }
                    878:
                    879: int
1.110     nicm      880: window_pane_spawn(struct window_pane *wp, int argc, char **argv,
1.147     nicm      881:     const char *path, const char *shell, const char *cwd, struct environ *env,
1.110     nicm      882:     struct termios *tio, char **cause)
1.1       nicm      883: {
1.47      nicm      884:        struct winsize   ws;
1.150     nicm      885:        char            *argv0, *cmd, **argvp;
1.147     nicm      886:        const char      *ptr, *first, *home;
1.47      nicm      887:        struct termios   tio2;
1.203     nicm      888:        sigset_t         set, oldset;
1.1       nicm      889:
1.37      nicm      890:        if (wp->fd != -1) {
1.70      nicm      891:                bufferevent_free(wp->event);
1.1       nicm      892:                close(wp->fd);
1.37      nicm      893:        }
1.110     nicm      894:        if (argc > 0) {
                    895:                cmd_free_argv(wp->argc, wp->argv);
                    896:                wp->argc = argc;
                    897:                wp->argv = cmd_copy_argv(argc, argv);
1.1       nicm      898:        }
1.23      nicm      899:        if (shell != NULL) {
1.82      nicm      900:                free(wp->shell);
1.23      nicm      901:                wp->shell = xstrdup(shell);
                    902:        }
1.147     nicm      903:        if (cwd != NULL) {
                    904:                free((void *)wp->cwd);
                    905:                wp->cwd = xstrdup(cwd);
1.1       nicm      906:        }
1.206     nicm      907:        wp->flags &= ~(PANE_STATUSREADY|PANE_STATUSDRAWN);
1.91      nicm      908:
1.110     nicm      909:        cmd = cmd_stringify_argv(wp->argc, wp->argv);
1.209     nicm      910:        log_debug("%s: shell=%s", __func__, wp->shell);
1.210     nicm      911:        log_debug("%s: cmd=%s", __func__, cmd);
                    912:        log_debug("%s: cwd=%s", __func__, cwd);
1.211     nicm      913:        cmd_log_argv(wp->argc, wp->argv, __func__);
1.209     nicm      914:        environ_log(env, "%s: environment ", __func__);
1.1       nicm      915:
                    916:        memset(&ws, 0, sizeof ws);
                    917:        ws.ws_col = screen_size_x(&wp->base);
                    918:        ws.ws_row = screen_size_y(&wp->base);
                    919:
1.203     nicm      920:        sigfillset(&set);
                    921:        sigprocmask(SIG_BLOCK, &set, &oldset);
                    922:        switch (wp->pid = fdforkpty(ptm_fd, &wp->fd, wp->tty, NULL, &ws)) {
1.1       nicm      923:        case -1:
1.215   ! nicm      924:                wp->event = NULL;
1.1       nicm      925:                wp->fd = -1;
1.203     nicm      926:
1.1       nicm      927:                xasprintf(cause, "%s: %s", cmd, strerror(errno));
1.110     nicm      928:                free(cmd);
1.203     nicm      929:
                    930:                sigprocmask(SIG_SETMASK, &oldset, NULL);
1.1       nicm      931:                return (-1);
                    932:        case 0:
1.204     nicm      933:                proc_clear_signals(server_proc, 1);
1.203     nicm      934:                sigprocmask(SIG_SETMASK, &oldset, NULL);
                    935:
1.207     nicm      936:                cwd = NULL;
                    937:                if (chdir(wp->cwd) == 0)
                    938:                        cwd = wp->cwd;
                    939:                else if ((home = find_home()) != NULL && chdir(home) == 0)
                    940:                        cwd = home;
                    941:                else
                    942:                        chdir("/");
1.25      nicm      943:
                    944:                if (tcgetattr(STDIN_FILENO, &tio2) != 0)
                    945:                        fatal("tcgetattr failed");
                    946:                if (tio != NULL)
                    947:                        memcpy(tio2.c_cc, tio->c_cc, sizeof tio2.c_cc);
                    948:                tio2.c_cc[VERASE] = '\177';
                    949:                if (tcsetattr(STDIN_FILENO, TCSANOW, &tio2) != 0)
                    950:                        fatal("tcgetattr failed");
1.18      nicm      951:
1.203     nicm      952:                log_close();
1.56      nicm      953:                closefrom(STDERR_FILENO + 1);
                    954:
1.107     nicm      955:                if (path != NULL)
1.150     nicm      956:                        environ_set(env, "PATH", "%s", path);
1.207     nicm      957:                if (cwd != NULL)
                    958:                        environ_set(env, "PWD", "%s", cwd);
1.150     nicm      959:                environ_set(env, "TMUX_PANE", "%%%u", wp->id);
1.47      nicm      960:                environ_push(env);
1.18      nicm      961:
1.80      nicm      962:                setenv("SHELL", wp->shell, 1);
                    963:                ptr = strrchr(wp->shell, '/');
                    964:
1.110     nicm      965:                /*
                    966:                 * If given one argument, assume it should be passed to sh -c;
                    967:                 * with more than one argument, use execvp(). If there is no
                    968:                 * arguments, create a login shell.
                    969:                 */
                    970:                if (wp->argc > 0) {
                    971:                        if (wp->argc != 1) {
                    972:                                /* Copy to ensure argv ends in NULL. */
                    973:                                argvp = cmd_copy_argv(wp->argc, wp->argv);
                    974:                                execvp(argvp[0], argvp);
                    975:                                fatal("execvp failed");
                    976:                        }
                    977:                        first = wp->argv[0];
                    978:
1.80      nicm      979:                        if (ptr != NULL && *(ptr + 1) != '\0')
                    980:                                xasprintf(&argv0, "%s", ptr + 1);
                    981:                        else
                    982:                                xasprintf(&argv0, "%s", wp->shell);
1.110     nicm      983:                        execl(wp->shell, argv0, "-c", first, (char *)NULL);
1.8       nicm      984:                        fatal("execl failed");
                    985:                }
1.23      nicm      986:                if (ptr != NULL && *(ptr + 1) != '\0')
1.8       nicm      987:                        xasprintf(&argv0, "-%s", ptr + 1);
                    988:                else
1.23      nicm      989:                        xasprintf(&argv0, "-%s", wp->shell);
1.110     nicm      990:                execl(wp->shell, argv0, (char *)NULL);
1.1       nicm      991:                fatal("execl failed");
                    992:        }
1.209     nicm      993:        log_debug("%s: master=%s", __func__, ttyname(wp->fd));
                    994:        log_debug("%s: slave=%s", __func__, wp->tty);
1.1       nicm      995:
1.203     nicm      996:        sigprocmask(SIG_SETMASK, &oldset, NULL);
1.62      nicm      997:        setblocking(wp->fd, 0);
                    998:
1.110     nicm      999:        wp->event = bufferevent_new(wp->fd, window_pane_read_callback, NULL,
                   1000:            window_pane_error_callback, wp);
1.214     nicm     1001:        if (wp->event == NULL)
                   1002:                fatalx("out of memory");
1.215   ! nicm     1003:
        !          1004:        wp->pipe_off = 0;
        !          1005:        wp->flags &= ~PANE_EXITED;
1.131     nicm     1006:
1.183     nicm     1007:        bufferevent_setwatermark(wp->event, EV_READ, 0, READ_SIZE);
1.37      nicm     1008:        bufferevent_enable(wp->event, EV_READ|EV_WRITE);
1.1       nicm     1009:
1.110     nicm     1010:        free(cmd);
1.1       nicm     1011:        return (0);
                   1012: }
                   1013:
1.166     nicm     1014: static void
1.149     nicm     1015: window_pane_read_callback(__unused struct bufferevent *bufev, void *data)
1.37      nicm     1016: {
1.131     nicm     1017:        struct window_pane      *wp = data;
                   1018:        struct evbuffer         *evb = wp->event->input;
1.166     nicm     1019:        size_t                   size = EVBUFFER_LENGTH(evb);
1.131     nicm     1020:        char                    *new_data;
1.158     nicm     1021:        size_t                   new_size;
1.131     nicm     1022:
1.166     nicm     1023:        new_size = size - wp->pipe_off;
1.46      nicm     1024:        if (wp->pipe_fd != -1 && new_size > 0) {
1.155     nicm     1025:                new_data = EVBUFFER_DATA(evb) + wp->pipe_off;
1.46      nicm     1026:                bufferevent_write(wp->pipe_event, new_data, new_size);
                   1027:        }
                   1028:
1.183     nicm     1029:        log_debug("%%%u has %zu bytes", wp->id, size);
1.46      nicm     1030:        input_parse(wp);
1.37      nicm     1031:
1.173     nicm     1032:        wp->pipe_off = EVBUFFER_LENGTH(evb);
1.37      nicm     1033: }
                   1034:
1.166     nicm     1035: static void
1.149     nicm     1036: window_pane_error_callback(__unused struct bufferevent *bufev,
                   1037:     __unused short what, void *data)
1.37      nicm     1038: {
                   1039:        struct window_pane *wp = data;
                   1040:
1.200     nicm     1041:        log_debug("%%%u error", wp->id);
1.201     nicm     1042:        wp->flags |= PANE_EXITED;
1.200     nicm     1043:
                   1044:        if (window_pane_destroy_ready(wp))
                   1045:                server_destroy_pane(wp, 1);
1.37      nicm     1046: }
                   1047:
                   1048: void
1.1       nicm     1049: window_pane_resize(struct window_pane *wp, u_int sx, u_int sy)
                   1050: {
                   1051:        if (sx == wp->sx && sy == wp->sy)
1.15      nicm     1052:                return;
1.1       nicm     1053:        wp->sx = sx;
                   1054:        wp->sy = sy;
                   1055:
1.89      nicm     1056:        screen_resize(&wp->base, sx, sy, wp->saved_grid == NULL);
1.1       nicm     1057:        if (wp->mode != NULL)
                   1058:                wp->mode->resize(wp, sx, sy);
1.95      nicm     1059:
                   1060:        wp->flags |= PANE_RESIZE;
1.44      nicm     1061: }
                   1062:
                   1063: /*
                   1064:  * Enter alternative screen mode. A copy of the visible screen is saved and the
                   1065:  * history is not updated
                   1066:  */
                   1067: void
1.87      nicm     1068: window_pane_alternate_on(struct window_pane *wp, struct grid_cell *gc,
                   1069:     int cursor)
1.44      nicm     1070: {
                   1071:        struct screen   *s = &wp->base;
                   1072:        u_int            sx, sy;
                   1073:
                   1074:        if (wp->saved_grid != NULL)
                   1075:                return;
1.146     nicm     1076:        if (!options_get_number(wp->window->options, "alternate-screen"))
1.44      nicm     1077:                return;
                   1078:        sx = screen_size_x(s);
                   1079:        sy = screen_size_y(s);
                   1080:
                   1081:        wp->saved_grid = grid_create(sx, sy, 0);
                   1082:        grid_duplicate_lines(wp->saved_grid, 0, s->grid, screen_hsize(s), sy);
1.87      nicm     1083:        if (cursor) {
                   1084:                wp->saved_cx = s->cx;
                   1085:                wp->saved_cy = s->cy;
                   1086:        }
1.44      nicm     1087:        memcpy(&wp->saved_cell, gc, sizeof wp->saved_cell);
                   1088:
1.170     nicm     1089:        grid_view_clear(s->grid, 0, 0, sx, sy, 8);
1.44      nicm     1090:
                   1091:        wp->base.grid->flags &= ~GRID_HISTORY;
                   1092:
                   1093:        wp->flags |= PANE_REDRAW;
                   1094: }
                   1095:
                   1096: /* Exit alternate screen mode and restore the copied grid. */
                   1097: void
1.87      nicm     1098: window_pane_alternate_off(struct window_pane *wp, struct grid_cell *gc,
                   1099:     int cursor)
1.44      nicm     1100: {
                   1101:        struct screen   *s = &wp->base;
                   1102:        u_int            sx, sy;
                   1103:
                   1104:        if (wp->saved_grid == NULL)
                   1105:                return;
1.146     nicm     1106:        if (!options_get_number(wp->window->options, "alternate-screen"))
1.44      nicm     1107:                return;
                   1108:        sx = screen_size_x(s);
                   1109:        sy = screen_size_y(s);
                   1110:
                   1111:        /*
                   1112:         * If the current size is bigger, temporarily resize to the old size
                   1113:         * before copying back.
                   1114:         */
                   1115:        if (sy > wp->saved_grid->sy)
1.89      nicm     1116:                screen_resize(s, sx, wp->saved_grid->sy, 1);
1.44      nicm     1117:
                   1118:        /* Restore the grid, cursor position and cell. */
                   1119:        grid_duplicate_lines(s->grid, screen_hsize(s), wp->saved_grid, 0, sy);
1.87      nicm     1120:        if (cursor)
                   1121:                s->cx = wp->saved_cx;
1.44      nicm     1122:        if (s->cx > screen_size_x(s) - 1)
                   1123:                s->cx = screen_size_x(s) - 1;
1.87      nicm     1124:        if (cursor)
                   1125:                s->cy = wp->saved_cy;
1.44      nicm     1126:        if (s->cy > screen_size_y(s) - 1)
                   1127:                s->cy = screen_size_y(s) - 1;
                   1128:        memcpy(gc, &wp->saved_cell, sizeof *gc);
                   1129:
                   1130:        /*
                   1131:         * Turn history back on (so resize can use it) and then resize back to
                   1132:         * the current size.
                   1133:         */
                   1134:        wp->base.grid->flags |= GRID_HISTORY;
1.89      nicm     1135:        if (sy > wp->saved_grid->sy || sx != wp->saved_grid->sx)
                   1136:                screen_resize(s, sx, sy, 1);
1.44      nicm     1137:
                   1138:        grid_destroy(wp->saved_grid);
                   1139:        wp->saved_grid = NULL;
                   1140:
1.177     nicm     1141:        wp->flags |= PANE_REDRAW;
                   1142: }
                   1143:
                   1144: void
                   1145: window_pane_set_palette(struct window_pane *wp, u_int n, int colour)
                   1146: {
                   1147:        if (n > 0xff)
                   1148:                return;
                   1149:
                   1150:        if (wp->palette == NULL)
                   1151:                wp->palette = xcalloc(0x100, sizeof *wp->palette);
                   1152:
                   1153:        wp->palette[n] = colour;
                   1154:        wp->flags |= PANE_REDRAW;
                   1155: }
                   1156:
                   1157: void
                   1158: window_pane_unset_palette(struct window_pane *wp, u_int n)
                   1159: {
                   1160:        if (n > 0xff || wp->palette == NULL)
                   1161:                return;
                   1162:
                   1163:        wp->palette[n] = 0;
                   1164:        wp->flags |= PANE_REDRAW;
                   1165: }
                   1166:
                   1167: void
                   1168: window_pane_reset_palette(struct window_pane *wp)
                   1169: {
                   1170:        if (wp->palette == NULL)
                   1171:                return;
                   1172:
                   1173:        free(wp->palette);
                   1174:        wp->palette = NULL;
1.44      nicm     1175:        wp->flags |= PANE_REDRAW;
1.1       nicm     1176: }
                   1177:
1.180     nicm     1178: int
                   1179: window_pane_get_palette(const struct window_pane *wp, int c)
                   1180: {
                   1181:        int     new;
                   1182:
                   1183:        if (wp == NULL || wp->palette == NULL)
                   1184:                return (-1);
                   1185:
                   1186:        new = -1;
                   1187:        if (c < 8)
                   1188:                new = wp->palette[c];
                   1189:        else if (c >= 90 && c <= 97)
                   1190:                new = wp->palette[8 + c - 90];
                   1191:        else if (c & COLOUR_FLAG_256)
                   1192:                new = wp->palette[c & ~COLOUR_FLAG_256];
                   1193:        if (new == 0)
                   1194:                return (-1);
                   1195:        return (new);
                   1196: }
                   1197:
1.162     nicm     1198: static void
                   1199: window_pane_mode_timer(__unused int fd, __unused short events, void *arg)
                   1200: {
                   1201:        struct window_pane      *wp = arg;
                   1202:        struct timeval           tv = { .tv_sec = 10 };
                   1203:        int                      n = 0;
                   1204:
                   1205:        evtimer_del(&wp->modetimer);
                   1206:        evtimer_add(&wp->modetimer, &tv);
                   1207:
                   1208:        log_debug("%%%u in mode: last=%ld", wp->id, (long)wp->modelast);
                   1209:
                   1210:        if (wp->modelast < time(NULL) - WINDOW_MODE_TIMEOUT) {
                   1211:                if (ioctl(wp->fd, FIONREAD, &n) == -1 || n > 0)
                   1212:                        window_pane_reset_mode(wp);
                   1213:        }
                   1214: }
                   1215:
1.1       nicm     1216: int
1.196     nicm     1217: window_pane_set_mode(struct window_pane *wp, const struct window_mode *mode,
                   1218:     struct cmd_find_state *fs, struct args *args)
1.1       nicm     1219: {
                   1220:        struct screen   *s;
1.162     nicm     1221:        struct timeval   tv = { .tv_sec = 10 };
1.1       nicm     1222:
1.15      nicm     1223:        if (wp->mode != NULL)
1.1       nicm     1224:                return (1);
                   1225:        wp->mode = mode;
                   1226:
1.162     nicm     1227:        wp->modelast = time(NULL);
                   1228:        evtimer_set(&wp->modetimer, window_pane_mode_timer, wp);
                   1229:        evtimer_add(&wp->modetimer, &tv);
                   1230:
1.196     nicm     1231:        if ((s = wp->mode->init(wp, fs, args)) != NULL)
1.1       nicm     1232:                wp->screen = s;
1.142     nicm     1233:        wp->flags |= (PANE_REDRAW|PANE_CHANGED);
1.157     nicm     1234:
                   1235:        server_status_window(wp->window);
1.193     nicm     1236:        notify_pane("pane-mode-changed", wp);
1.1       nicm     1237:        return (0);
                   1238: }
                   1239:
                   1240: void
                   1241: window_pane_reset_mode(struct window_pane *wp)
                   1242: {
                   1243:        if (wp->mode == NULL)
                   1244:                return;
                   1245:
1.162     nicm     1246:        evtimer_del(&wp->modetimer);
                   1247:
1.1       nicm     1248:        wp->mode->free(wp);
                   1249:        wp->mode = NULL;
1.168     nicm     1250:        wp->modeprefix = 1;
1.1       nicm     1251:
                   1252:        wp->screen = &wp->base;
1.142     nicm     1253:        wp->flags |= (PANE_REDRAW|PANE_CHANGED);
1.157     nicm     1254:
                   1255:        server_status_window(wp->window);
1.193     nicm     1256:        notify_pane("pane-mode-changed", wp);
1.1       nicm     1257: }
                   1258:
                   1259: void
1.118     nicm     1260: window_pane_key(struct window_pane *wp, struct client *c, struct session *s,
1.148     nicm     1261:     key_code key, struct mouse_event *m)
1.1       nicm     1262: {
1.27      nicm     1263:        struct window_pane      *wp2;
1.3       nicm     1264:
1.118     nicm     1265:        if (KEYC_IS_MOUSE(key) && m == NULL)
                   1266:                return;
                   1267:
1.1       nicm     1268:        if (wp->mode != NULL) {
1.162     nicm     1269:                wp->modelast = time(NULL);
1.1       nicm     1270:                if (wp->mode->key != NULL)
1.199     nicm     1271:                        wp->mode->key(wp, c, s, (key & ~KEYC_XTERM), m);
1.27      nicm     1272:                return;
1.30      nicm     1273:        }
1.27      nicm     1274:
1.113     nicm     1275:        if (wp->fd == -1 || wp->flags & PANE_INPUTOFF)
1.30      nicm     1276:                return;
1.113     nicm     1277:
1.118     nicm     1278:        input_key(wp, key, m);
                   1279:
                   1280:        if (KEYC_IS_MOUSE(key))
                   1281:                return;
1.146     nicm     1282:        if (options_get_number(wp->window->options, "synchronize-panes")) {
1.27      nicm     1283:                TAILQ_FOREACH(wp2, &wp->window->panes, entry) {
1.213     nicm     1284:                        if (wp2 != wp &&
                   1285:                            wp2->mode == NULL &&
                   1286:                            wp2->fd != -1 &&
                   1287:                            (~wp2->flags & PANE_INPUTOFF) &&
                   1288:                            window_pane_visible(wp2))
1.118     nicm     1289:                                input_key(wp2, key, NULL);
1.27      nicm     1290:                }
                   1291:        }
1.10      nicm     1292: }
                   1293:
                   1294: int
1.205     nicm     1295: window_pane_visible(struct window_pane *wp)
1.10      nicm     1296: {
1.213     nicm     1297:        if (~wp->window->flags & WINDOW_ZOOMED)
                   1298:                return (1);
                   1299:        return (wp == wp->window->active);
1.1       nicm     1300: }
                   1301:
1.195     nicm     1302: u_int
                   1303: window_pane_search(struct window_pane *wp, const char *searchstr)
                   1304: {
                   1305:        struct screen   *s = &wp->base;
                   1306:        char            *newsearchstr, *line;
                   1307:        u_int            i;
                   1308:
                   1309:        xasprintf(&newsearchstr, "*%s*", searchstr);
                   1310:
                   1311:        for (i = 0; i < screen_size_y(s); i++) {
                   1312:                line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
                   1313:                if (fnmatch(newsearchstr, line, 0) == 0) {
                   1314:                        free(line);
                   1315:                        break;
                   1316:                }
                   1317:                free(line);
                   1318:        }
                   1319:
                   1320:        free(newsearchstr);
                   1321:        if (i == screen_size_y(s))
                   1322:                return (0);
                   1323:        return (i + 1);
1.45      nicm     1324: }
                   1325:
1.109     nicm     1326: /* Get MRU pane from a list. */
1.166     nicm     1327: static struct window_pane *
1.126     nicm     1328: window_pane_choose_best(struct window_pane **list, u_int size)
1.109     nicm     1329: {
                   1330:        struct window_pane      *next, *best;
                   1331:        u_int                    i;
                   1332:
1.126     nicm     1333:        if (size == 0)
1.109     nicm     1334:                return (NULL);
                   1335:
1.126     nicm     1336:        best = list[0];
                   1337:        for (i = 1; i < size; i++) {
                   1338:                next = list[i];
1.109     nicm     1339:                if (next->active_point > best->active_point)
                   1340:                        best = next;
                   1341:        }
                   1342:        return (best);
                   1343: }
                   1344:
                   1345: /*
                   1346:  * Find the pane directly above another. We build a list of those adjacent to
                   1347:  * top edge and then choose the best.
                   1348:  */
1.45      nicm     1349: struct window_pane *
                   1350: window_pane_find_up(struct window_pane *wp)
                   1351: {
1.126     nicm     1352:        struct window_pane      *next, *best, **list;
                   1353:        u_int                    edge, left, right, end, size;
1.187     nicm     1354:        int                      status, found;
1.45      nicm     1355:
1.213     nicm     1356:        if (wp == NULL)
1.45      nicm     1357:                return (NULL);
1.187     nicm     1358:        status = options_get_number(wp->window->options, "pane-border-status");
1.126     nicm     1359:
                   1360:        list = NULL;
                   1361:        size = 0;
1.109     nicm     1362:
                   1363:        edge = wp->yoff;
1.187     nicm     1364:        if (edge == (status == 1 ? 1 : 0))
                   1365:                edge = wp->window->sy + 1 - (status == 2 ? 1 : 0);
1.45      nicm     1366:
                   1367:        left = wp->xoff;
1.109     nicm     1368:        right = wp->xoff + wp->sx;
1.45      nicm     1369:
1.109     nicm     1370:        TAILQ_FOREACH(next, &wp->window->panes, entry) {
1.213     nicm     1371:                if (next == wp)
1.45      nicm     1372:                        continue;
1.109     nicm     1373:                if (next->yoff + next->sy + 1 != edge)
1.45      nicm     1374:                        continue;
1.109     nicm     1375:                end = next->xoff + next->sx - 1;
                   1376:
                   1377:                found = 0;
                   1378:                if (next->xoff < left && end > right)
                   1379:                        found = 1;
                   1380:                else if (next->xoff >= left && next->xoff <= right)
                   1381:                        found = 1;
                   1382:                else if (end >= left && end <= right)
                   1383:                        found = 1;
1.126     nicm     1384:                if (!found)
                   1385:                        continue;
                   1386:                list = xreallocarray(list, size + 1, sizeof *list);
                   1387:                list[size++] = next;
1.109     nicm     1388:        }
                   1389:
1.126     nicm     1390:        best = window_pane_choose_best(list, size);
                   1391:        free(list);
1.109     nicm     1392:        return (best);
1.45      nicm     1393: }
                   1394:
                   1395: /* Find the pane directly below another. */
                   1396: struct window_pane *
                   1397: window_pane_find_down(struct window_pane *wp)
                   1398: {
1.126     nicm     1399:        struct window_pane      *next, *best, **list;
                   1400:        u_int                    edge, left, right, end, size;
1.187     nicm     1401:        int                      status, found;
1.45      nicm     1402:
1.213     nicm     1403:        if (wp == NULL)
1.45      nicm     1404:                return (NULL);
1.187     nicm     1405:        status = options_get_number(wp->window->options, "pane-border-status");
1.126     nicm     1406:
                   1407:        list = NULL;
                   1408:        size = 0;
1.109     nicm     1409:
                   1410:        edge = wp->yoff + wp->sy + 1;
1.187     nicm     1411:        if (edge >= wp->window->sy - (status == 2 ? 1 : 0))
                   1412:                edge = (status == 1 ? 1 : 0);
1.45      nicm     1413:
                   1414:        left = wp->xoff;
1.109     nicm     1415:        right = wp->xoff + wp->sx;
1.45      nicm     1416:
1.109     nicm     1417:        TAILQ_FOREACH(next, &wp->window->panes, entry) {
1.213     nicm     1418:                if (next == wp)
1.45      nicm     1419:                        continue;
1.109     nicm     1420:                if (next->yoff != edge)
1.45      nicm     1421:                        continue;
1.109     nicm     1422:                end = next->xoff + next->sx - 1;
                   1423:
                   1424:                found = 0;
                   1425:                if (next->xoff < left && end > right)
                   1426:                        found = 1;
                   1427:                else if (next->xoff >= left && next->xoff <= right)
                   1428:                        found = 1;
                   1429:                else if (end >= left && end <= right)
                   1430:                        found = 1;
1.126     nicm     1431:                if (!found)
                   1432:                        continue;
                   1433:                list = xreallocarray(list, size + 1, sizeof *list);
                   1434:                list[size++] = next;
1.45      nicm     1435:        }
1.109     nicm     1436:
1.126     nicm     1437:        best = window_pane_choose_best(list, size);
                   1438:        free(list);
1.109     nicm     1439:        return (best);
1.45      nicm     1440: }
                   1441:
1.109     nicm     1442: /* Find the pane directly to the left of another. */
1.45      nicm     1443: struct window_pane *
                   1444: window_pane_find_left(struct window_pane *wp)
                   1445: {
1.126     nicm     1446:        struct window_pane      *next, *best, **list;
                   1447:        u_int                    edge, top, bottom, end, size;
1.109     nicm     1448:        int                      found;
1.45      nicm     1449:
1.213     nicm     1450:        if (wp == NULL)
1.45      nicm     1451:                return (NULL);
1.126     nicm     1452:
                   1453:        list = NULL;
                   1454:        size = 0;
1.109     nicm     1455:
                   1456:        edge = wp->xoff;
                   1457:        if (edge == 0)
                   1458:                edge = wp->window->sx + 1;
1.45      nicm     1459:
                   1460:        top = wp->yoff;
1.109     nicm     1461:        bottom = wp->yoff + wp->sy;
1.45      nicm     1462:
1.109     nicm     1463:        TAILQ_FOREACH(next, &wp->window->panes, entry) {
1.213     nicm     1464:                if (next == wp)
1.45      nicm     1465:                        continue;
1.109     nicm     1466:                if (next->xoff + next->sx + 1 != edge)
1.45      nicm     1467:                        continue;
1.109     nicm     1468:                end = next->yoff + next->sy - 1;
                   1469:
                   1470:                found = 0;
                   1471:                if (next->yoff < top && end > bottom)
                   1472:                        found = 1;
                   1473:                else if (next->yoff >= top && next->yoff <= bottom)
                   1474:                        found = 1;
                   1475:                else if (end >= top && end <= bottom)
                   1476:                        found = 1;
1.126     nicm     1477:                if (!found)
                   1478:                        continue;
                   1479:                list = xreallocarray(list, size + 1, sizeof *list);
                   1480:                list[size++] = next;
1.45      nicm     1481:        }
1.109     nicm     1482:
1.126     nicm     1483:        best = window_pane_choose_best(list, size);
                   1484:        free(list);
1.109     nicm     1485:        return (best);
1.45      nicm     1486: }
                   1487:
1.109     nicm     1488: /* Find the pane directly to the right of another. */
1.45      nicm     1489: struct window_pane *
                   1490: window_pane_find_right(struct window_pane *wp)
                   1491: {
1.126     nicm     1492:        struct window_pane      *next, *best, **list;
                   1493:        u_int                    edge, top, bottom, end, size;
1.109     nicm     1494:        int                      found;
1.45      nicm     1495:
1.213     nicm     1496:        if (wp == NULL)
1.45      nicm     1497:                return (NULL);
1.126     nicm     1498:
                   1499:        list = NULL;
                   1500:        size = 0;
1.109     nicm     1501:
                   1502:        edge = wp->xoff + wp->sx + 1;
                   1503:        if (edge >= wp->window->sx)
                   1504:                edge = 0;
1.45      nicm     1505:
                   1506:        top = wp->yoff;
1.109     nicm     1507:        bottom = wp->yoff + wp->sy;
1.45      nicm     1508:
1.109     nicm     1509:        TAILQ_FOREACH(next, &wp->window->panes, entry) {
1.213     nicm     1510:                if (next == wp)
1.45      nicm     1511:                        continue;
1.109     nicm     1512:                if (next->xoff != edge)
1.45      nicm     1513:                        continue;
1.109     nicm     1514:                end = next->yoff + next->sy - 1;
                   1515:
                   1516:                found = 0;
                   1517:                if (next->yoff < top && end > bottom)
                   1518:                        found = 1;
                   1519:                else if (next->yoff >= top && next->yoff <= bottom)
                   1520:                        found = 1;
                   1521:                else if (end >= top && end <= bottom)
                   1522:                        found = 1;
1.126     nicm     1523:                if (!found)
                   1524:                        continue;
                   1525:                list = xreallocarray(list, size + 1, sizeof *list);
                   1526:                list[size++] = next;
1.109     nicm     1527:        }
                   1528:
1.126     nicm     1529:        best = window_pane_choose_best(list, size);
                   1530:        free(list);
1.109     nicm     1531:        return (best);
1.81      nicm     1532: }
                   1533:
                   1534: /* Clear alert flags for a winlink */
                   1535: void
                   1536: winlink_clear_flags(struct winlink *wl)
                   1537: {
1.174     nicm     1538:        struct winlink  *loop;
1.81      nicm     1539:
1.174     nicm     1540:        wl->window->flags &= ~WINDOW_ALERTFLAGS;
                   1541:        TAILQ_FOREACH(loop, &wl->window->winlinks, wentry) {
                   1542:                if ((loop->flags & WINLINK_ALERTFLAGS) != 0) {
                   1543:                        loop->flags &= ~WINLINK_ALERTFLAGS;
                   1544:                        server_status_session(loop->session);
1.81      nicm     1545:                }
                   1546:        }
1.134     nicm     1547: }
                   1548:
1.184     nicm     1549: /* Shuffle window indexes up. */
1.134     nicm     1550: int
                   1551: winlink_shuffle_up(struct session *s, struct winlink *wl)
                   1552: {
                   1553:        int      idx, last;
                   1554:
                   1555:        idx = wl->idx + 1;
                   1556:
                   1557:        /* Find the next free index. */
                   1558:        for (last = idx; last < INT_MAX; last++) {
                   1559:                if (winlink_find_by_index(&s->windows, last) == NULL)
                   1560:                        break;
                   1561:        }
                   1562:        if (last == INT_MAX)
                   1563:                return (-1);
                   1564:
                   1565:        /* Move everything from last - 1 to idx up a bit. */
                   1566:        for (; last > idx; last--) {
                   1567:                wl = winlink_find_by_index(&s->windows, last - 1);
                   1568:                server_link_window(s, wl, s, last, 0, 0, NULL);
                   1569:                server_unlink_window(s, wl);
                   1570:        }
                   1571:
                   1572:        return (idx);
1.1       nicm     1573: }