git.sur5r.net Git - i3/i3/blob - src/commands.c

   1 /*
   2  * vim:ts=4:sw=4:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
   6  *
   7  * commands.c: all command functions (see commands_parser.c)
   8  *
   9  */
  10 #include "all.h"
  11
  12 #include <stdint.h>
  13 #include <float.h>
  14 #include <stdarg.h>
  15
  16 #ifdef I3_ASAN_ENABLED
  17 #include <sanitizer/lsan_interface.h>
  18 #endif
  19
  20 #include "shmlog.h"
  21
  22 // Macros to make the YAJL API a bit easier to use.
  23 #define y(x, ...) (cmd_output->json_gen != NULL ? yajl_gen_##x(cmd_output->json_gen, ##__VA_ARGS__) : 0)
  24 #define ystr(str) (cmd_output->json_gen != NULL ? yajl_gen_string(cmd_output->json_gen, (unsigned char *)str, strlen(str)) : 0)
  25 #define ysuccess(success)                   \
  26     do {                                    \
  27         if (cmd_output->json_gen != NULL) { \
  28             y(map_open);                    \
  29             ystr("success");                \
  30             y(bool, success);               \
  31             y(map_close);                   \
  32         }                                   \
  33     } while (0)
  34 #define yerror(format, ...)                             \
  35     do {                                                \
  36         if (cmd_output->json_gen != NULL) {             \
  37             char *message;                              \
  38             sasprintf(&message, format, ##__VA_ARGS__); \
  39             y(map_open);                                \
  40             ystr("success");                            \
  41             y(bool, false);                             \
  42             ystr("error");                              \
  43             ystr(message);                              \
  44             y(map_close);                               \
  45             free(message);                              \
  46         }                                               \
  47     } while (0)
  48
  49 /** If an error occurred during parsing of the criteria, we want to exit instead
  50  * of relying on fallback behavior. See #2091. */
  51 #define HANDLE_INVALID_MATCH                                   \
  52     do {                                                       \
  53         if (current_match->error != NULL) {                    \
  54             yerror("Invalid match: %s", current_match->error); \
  55             return;                                            \
  56         }                                                      \
  57     } while (0)
  58
  59 /** When the command did not include match criteria (!), we use the currently
  60  * focused container. Do not confuse this case with a command which included
  61  * criteria but which did not match any windows. This macro has to be called in
  62  * every command.
  63  */
  64 #define HANDLE_EMPTY_MATCH                              \
  65     do {                                                \
  66         HANDLE_INVALID_MATCH;                           \
  67                                                         \
  68         if (match_is_empty(current_match)) {            \
  69             while (!TAILQ_EMPTY(&owindows)) {           \
  70                 owindow *ow = TAILQ_FIRST(&owindows);   \
  71                 TAILQ_REMOVE(&owindows, ow, owindows);  \
  72                 free(ow);                               \
  73             }                                           \
  74             owindow *ow = smalloc(sizeof(owindow));     \
  75             ow->con = focused;                          \
  76             TAILQ_INIT(&owindows);                      \
  77             TAILQ_INSERT_TAIL(&owindows, ow, owindows); \
  78         }                                               \
  79     } while (0)
  80
  81 /*
  82  * Checks whether we switched to a new workspace and returns false in that case,
  83  * signaling that further workspace switching should be done by the calling function
  84  * If not, calls workspace_back_and_forth() if workspace_auto_back_and_forth is set
  85  * and return true, signaling that no further workspace switching should occur in the calling function.
  86  *
  87  */
  88 static bool maybe_back_and_forth(struct CommandResultIR *cmd_output, const char *name) {
  89     Con *ws = con_get_workspace(focused);
  90
  91     /* If we switched to a different workspace, do nothing */
  92     if (strcmp(ws->name, name) != 0)
  93         return false;
  94
  95     DLOG("This workspace is already focused.\n");
  96     if (config.workspace_auto_back_and_forth) {
  97         workspace_back_and_forth();
  98         cmd_output->needs_tree_render = true;
  99     }
 100     return true;
 101 }
 102
 103 /*
 104  * Return the passed workspace unless it is the current one and auto back and
 105  * forth is enabled, in which case the back_and_forth workspace is returned.
 106  */
 107 static Con *maybe_auto_back_and_forth_workspace(Con *workspace) {
 108     Con *current, *baf;
 109
 110     if (!config.workspace_auto_back_and_forth)
 111         return workspace;
 112
 113     current = con_get_workspace(focused);
 114
 115     if (current == workspace) {
 116         baf = workspace_back_and_forth_get();
 117         if (baf != NULL) {
 118             DLOG("Substituting workspace with back_and_forth, as it is focused.\n");
 119             return baf;
 120         }
 121     }
 122
 123     return workspace;
 124 }
 125
 126 /*******************************************************************************
 127  * Criteria functions.
 128  ******************************************************************************/
 129
 130 /*
 131  * Helper data structure for an operation window (window on which the operation
 132  * will be performed). Used to build the TAILQ owindows.
 133  *
 134  */
 135 typedef struct owindow {
 136     Con *con;
 137
 138     TAILQ_ENTRY(owindow)
 139     owindows;
 140 } owindow;
 141
 142 typedef TAILQ_HEAD(owindows_head, owindow) owindows_head;
 143
 144 static owindows_head owindows;
 145
 146 /*
 147  * Initializes the specified 'Match' data structure and the initial state of
 148  * commands.c for matching target windows of a command.
 149  *
 150  */
 151 void cmd_criteria_init(I3_CMD) {
 152     Con *con;
 153     owindow *ow;
 154
 155     DLOG("Initializing criteria, current_match = %p\n", current_match);
 156     match_free(current_match);
 157     match_init(current_match);
 158     while (!TAILQ_EMPTY(&owindows)) {
 159         ow = TAILQ_FIRST(&owindows);
 160         TAILQ_REMOVE(&owindows, ow, owindows);
 161         free(ow);
 162     }
 163     TAILQ_INIT(&owindows);
 164     /* copy all_cons */
 165     TAILQ_FOREACH(con, &all_cons, all_cons) {
 166         ow = smalloc(sizeof(owindow));
 167         ow->con = con;
 168         TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 169     }
 170 }
 171
 172 /*
 173  * A match specification just finished (the closing square bracket was found),
 174  * so we filter the list of owindows.
 175  *
 176  */
 177 void cmd_criteria_match_windows(I3_CMD) {
 178     owindow *next, *current;
 179
 180     DLOG("match specification finished, matching...\n");
 181     /* copy the old list head to iterate through it and start with a fresh
 182      * list which will contain only matching windows */
 183     struct owindows_head old = owindows;
 184     TAILQ_INIT(&owindows);
 185     for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 186         /* make a copy of the next pointer and advance the pointer to the
 187          * next element as we are going to invalidate the element’s
 188          * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 189         current = next;
 190         next = TAILQ_NEXT(next, owindows);
 191
 192         DLOG("checking if con %p / %s matches\n", current->con, current->con->name);
 193
 194         /* We use this flag to prevent matching on window-less containers if
 195          * only window-specific criteria were specified. */
 196         bool accept_match = false;
 197
 198         if (current_match->con_id != NULL) {
 199             accept_match = true;
 200
 201             if (current_match->con_id == current->con) {
 202                 DLOG("con_id matched.\n");
 203             } else {
 204                 DLOG("con_id does not match.\n");
 205                 FREE(current);
 206                 continue;
 207             }
 208         }
 209
 210         if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
 211             accept_match = true;
 212             bool matched_by_mark = false;
 213
 214             mark_t *mark;
 215             TAILQ_FOREACH(mark, &(current->con->marks_head), marks) {
 216                 if (!regex_matches(current_match->mark, mark->name))
 217                     continue;
 218
 219                 DLOG("match by mark\n");
 220                 matched_by_mark = true;
 221                 break;
 222             }
 223
 224             if (!matched_by_mark) {
 225                 DLOG("mark does not match.\n");
 226                 FREE(current);
 227                 continue;
 228             }
 229         }
 230
 231         if (current->con->window != NULL) {
 232             if (match_matches_window(current_match, current->con->window)) {
 233                 DLOG("matches window!\n");
 234                 accept_match = true;
 235             } else {
 236                 DLOG("doesn't match\n");
 237                 FREE(current);
 238                 continue;
 239             }
 240         }
 241
 242         if (accept_match) {
 243             TAILQ_INSERT_TAIL(&owindows, current, owindows);
 244         } else {
 245             FREE(current);
 246             continue;
 247         }
 248     }
 249
 250     TAILQ_FOREACH(current, &owindows, owindows) {
 251         DLOG("matching: %p / %s\n", current->con, current->con->name);
 252     }
 253 }
 254
 255 /*
 256  * Interprets a ctype=cvalue pair and adds it to the current match
 257  * specification.
 258  *
 259  */
 260 void cmd_criteria_add(I3_CMD, const char *ctype, const char *cvalue) {
 261     match_parse_property(current_match, ctype, cvalue);
 262 }
 263
 264 static void move_matches_to_workspace(Con *ws) {
 265     owindow *current;
 266     TAILQ_FOREACH(current, &owindows, owindows) {
 267         DLOG("matching: %p / %s\n", current->con, current->con->name);
 268         con_move_to_workspace(current->con, ws, true, false, false);
 269     }
 270 }
 271
 272 /*
 273  * Implementation of 'move [window|container] [to] workspace
 274  * next|prev|next_on_output|prev_on_output|current'.
 275  *
 276  */
 277 void cmd_move_con_to_workspace(I3_CMD, const char *which) {
 278     DLOG("which=%s\n", which);
 279
 280     /* We have nothing to move:
 281      *  when criteria was specified but didn't match any window or
 282      *  when criteria wasn't specified and we don't have any window focused. */
 283     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 284         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 285          !con_has_children(focused))) {
 286         ysuccess(false);
 287         return;
 288     }
 289
 290     HANDLE_EMPTY_MATCH;
 291
 292     /* get the workspace */
 293     Con *ws;
 294     if (strcmp(which, "next") == 0)
 295         ws = workspace_next();
 296     else if (strcmp(which, "prev") == 0)
 297         ws = workspace_prev();
 298     else if (strcmp(which, "next_on_output") == 0)
 299         ws = workspace_next_on_output();
 300     else if (strcmp(which, "prev_on_output") == 0)
 301         ws = workspace_prev_on_output();
 302     else if (strcmp(which, "current") == 0)
 303         ws = con_get_workspace(focused);
 304     else {
 305         ELOG("BUG: called with which=%s\n", which);
 306         ysuccess(false);
 307         return;
 308     }
 309
 310     move_matches_to_workspace(ws);
 311
 312     cmd_output->needs_tree_render = true;
 313     // XXX: default reply for now, make this a better reply
 314     ysuccess(true);
 315 }
 316
 317 /**
 318  * Implementation of 'move [window|container] [to] workspace back_and_forth'.
 319  *
 320  */
 321 void cmd_move_con_to_workspace_back_and_forth(I3_CMD) {
 322     Con *ws = workspace_back_and_forth_get();
 323     if (ws == NULL) {
 324         yerror("No workspace was previously active.");
 325         return;
 326     }
 327
 328     HANDLE_EMPTY_MATCH;
 329
 330     move_matches_to_workspace(ws);
 331
 332     cmd_output->needs_tree_render = true;
 333     // XXX: default reply for now, make this a better reply
 334     ysuccess(true);
 335 }
 336
 337 /*
 338  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace <name>'.
 339  *
 340  */
 341 void cmd_move_con_to_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 342     if (strncasecmp(name, "__", strlen("__")) == 0) {
 343         LOG("You cannot move containers to i3-internal workspaces (\"%s\").\n", name);
 344         ysuccess(false);
 345         return;
 346     }
 347
 348     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 349
 350     /* We have nothing to move:
 351      *  when criteria was specified but didn't match any window or
 352      *  when criteria wasn't specified and we don't have any window focused. */
 353     if (!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) {
 354         ELOG("No windows match your criteria, cannot move.\n");
 355         ysuccess(false);
 356         return;
 357     } else if (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 358                !con_has_children(focused)) {
 359         ysuccess(false);
 360         return;
 361     }
 362
 363     LOG("should move window to workspace %s\n", name);
 364     /* get the workspace */
 365     Con *ws = workspace_get(name, NULL);
 366
 367     if (!no_auto_back_and_forth)
 368         ws = maybe_auto_back_and_forth_workspace(ws);
 369
 370     HANDLE_EMPTY_MATCH;
 371
 372     move_matches_to_workspace(ws);
 373
 374     cmd_output->needs_tree_render = true;
 375     // XXX: default reply for now, make this a better reply
 376     ysuccess(true);
 377 }
 378
 379 /*
 380  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace number <name>'.
 381  *
 382  */
 383 void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 384     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 385
 386     /* We have nothing to move:
 387      *  when criteria was specified but didn't match any window or
 388      *  when criteria wasn't specified and we don't have any window focused. */
 389     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 390         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 391          !con_has_children(focused))) {
 392         ysuccess(false);
 393         return;
 394     }
 395
 396     LOG("should move window to workspace %s\n", which);
 397
 398     long parsed_num = ws_name_to_number(which);
 399     if (parsed_num == -1) {
 400         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 401         yerror("Could not parse number \"%s\"", which);
 402         return;
 403     }
 404
 405     Con *ws = get_existing_workspace_by_num(parsed_num);
 406     if (!ws) {
 407         ws = workspace_get(which, NULL);
 408     }
 409
 410     if (!no_auto_back_and_forth)
 411         ws = maybe_auto_back_and_forth_workspace(ws);
 412
 413     HANDLE_EMPTY_MATCH;
 414
 415     move_matches_to_workspace(ws);
 416
 417     cmd_output->needs_tree_render = true;
 418     // XXX: default reply for now, make this a better reply
 419     ysuccess(true);
 420 }
 421
 422 /*
 423  * Convert a string direction ("left", "right", etc.) to a direction_t. Assumes
 424  * valid direction string.
 425  */
 426 static direction_t parse_direction(const char *str) {
 427     if (strcmp(str, "left") == 0) {
 428         return D_LEFT;
 429     } else if (strcmp(str, "right") == 0) {
 430         return D_RIGHT;
 431     } else if (strcmp(str, "up") == 0) {
 432         return D_UP;
 433     } else if (strcmp(str, "down") == 0) {
 434         return D_DOWN;
 435     } else {
 436         ELOG("Invalid direction. This is a parser bug.\n");
 437         assert(false);
 438     }
 439 }
 440
 441 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction_str, Con *floating_con, int px) {
 442     Rect old_rect = floating_con->rect;
 443     Con *focused_con = con_descend_focused(floating_con);
 444
 445     direction_t direction;
 446     if (strcmp(direction_str, "height") == 0) {
 447         direction = D_DOWN;
 448     } else if (strcmp(direction_str, "width") == 0) {
 449         direction = D_RIGHT;
 450     } else {
 451         direction = parse_direction(direction_str);
 452     }
 453     orientation_t orientation = orientation_from_direction(direction);
 454
 455     /* ensure that resize will take place even if pixel increment is smaller than
 456      * height increment or width increment.
 457      * fixes #1011 */
 458     const i3Window *window = focused_con->window;
 459     if (window != NULL) {
 460         if (orientation == VERT) {
 461             if (px < 0) {
 462                 px = (-px < window->height_increment) ? -window->height_increment : px;
 463             } else {
 464                 px = (px < window->height_increment) ? window->height_increment : px;
 465             }
 466         } else {
 467             if (px < 0) {
 468                 px = (-px < window->width_increment) ? -window->width_increment : px;
 469             } else {
 470                 px = (px < window->width_increment) ? window->width_increment : px;
 471             }
 472         }
 473     }
 474
 475     if (orientation == VERT) {
 476         floating_con->rect.height += px;
 477     } else {
 478         floating_con->rect.width += px;
 479     }
 480     floating_check_size(floating_con);
 481
 482     /* Did we actually resize anything or did the size constraints prevent us?
 483      * If we could not resize, exit now to not move the window. */
 484     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0) {
 485         return;
 486     }
 487
 488     if (direction == D_UP) {
 489         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 490     } else if (direction == D_LEFT) {
 491         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 492     }
 493
 494     /* If this is a scratchpad window, don't auto center it from now on. */
 495     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH) {
 496         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 497     }
 498 }
 499
 500 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *way, const char *direction, int px, int ppt) {
 501     Con *second = NULL;
 502     Con *first = current;
 503     direction_t search_direction = parse_direction(direction);
 504
 505     bool res = resize_find_tiling_participants(&first, &second, search_direction, false);
 506     if (!res) {
 507         yerror("No second container found in this direction.\n");
 508         return false;
 509     }
 510
 511     if (ppt) {
 512         /* For backwards compatibility, 'X px or Y ppt' means that ppt is
 513          * preferred. */
 514         px = 0;
 515     }
 516     return resize_neighboring_cons(first, second, px, ppt);
 517 }
 518
 519 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int px, int _ppt) {
 520     LOG("width/height resize\n");
 521
 522     /* get the appropriate current container (skip stacked/tabbed cons) */
 523     Con *dummy = NULL;
 524     direction_t search_direction = (strcmp(direction, "width") == 0 ? D_LEFT : D_DOWN);
 525     bool search_result = resize_find_tiling_participants(&current, &dummy, search_direction, true);
 526     if (search_result == false) {
 527         ysuccess(false);
 528         return false;
 529     }
 530
 531     /* get the default percentage */
 532     int children = con_num_children(current->parent);
 533     LOG("ins. %d children\n", children);
 534     double percentage = 1.0 / children;
 535     LOG("default percentage = %f\n", percentage);
 536
 537     /* Ensure all the other children have a percentage set. */
 538     Con *child;
 539     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 540         LOG("child->percent = %f (child %p)\n", child->percent, child);
 541         if (child->percent == 0.0)
 542             child->percent = percentage;
 543     }
 544
 545     double ppt = (double)_ppt / 100.0;
 546     double new_current_percent;
 547     double subtract_percent;
 548     if (_ppt) {
 549         new_current_percent = current->percent + ppt;
 550     } else {
 551         new_current_percent = px_resize_to_percent(current, px);
 552         ppt = new_current_percent - current->percent;
 553     }
 554     subtract_percent = ppt / (children - 1);
 555
 556     LOG("new_current_percent = %f\n", new_current_percent);
 557     LOG("subtract_percent = %f\n", subtract_percent);
 558     /* Ensure that the new percentages are positive. */
 559     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 560         if (child == current)
 561             continue;
 562         if (child->percent - subtract_percent <= 0.0) {
 563             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 564             ysuccess(false);
 565             return false;
 566         }
 567     }
 568     if (new_current_percent <= 0.0) {
 569         LOG("Not resizing, already at minimum size\n");
 570         ysuccess(false);
 571         return false;
 572     }
 573
 574     current->percent = new_current_percent;
 575     LOG("current->percent after = %f\n", current->percent);
 576
 577     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 578         if (child == current)
 579             continue;
 580         child->percent -= subtract_percent;
 581         LOG("child->percent after (%p) = %f\n", child, child->percent);
 582     }
 583
 584     return true;
 585 }
 586
 587 /*
 588  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 589  *
 590  */
 591 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 592     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 593     if (strcmp(way, "shrink") == 0) {
 594         resize_px *= -1;
 595         resize_ppt *= -1;
 596     }
 597
 598     HANDLE_EMPTY_MATCH;
 599
 600     owindow *current;
 601     TAILQ_FOREACH(current, &owindows, owindows) {
 602         /* Don't handle dock windows (issue #1201) */
 603         if (current->con->window && current->con->window->dock) {
 604             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 605             continue;
 606         }
 607
 608         Con *floating_con;
 609         if ((floating_con = con_inside_floating(current->con))) {
 610             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 611         } else {
 612             if (strcmp(direction, "width") == 0 ||
 613                 strcmp(direction, "height") == 0) {
 614                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 615                                                     current->con, way, direction,
 616                                                     resize_px, resize_ppt))
 617                     return;
 618             } else {
 619                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 620                                                  current->con, way, direction,
 621                                                  resize_px, resize_ppt))
 622                     return;
 623             }
 624         }
 625     }
 626
 627     cmd_output->needs_tree_render = true;
 628     // XXX: default reply for now, make this a better reply
 629     ysuccess(true);
 630 }
 631
 632 /*
 633  * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
 634  *
 635  */
 636 void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
 637     DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
 638     if (cwidth < 0 || cheight < 0) {
 639         ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
 640         return;
 641     }
 642
 643     HANDLE_EMPTY_MATCH;
 644
 645     owindow *current;
 646     bool success = true;
 647     TAILQ_FOREACH(current, &owindows, owindows) {
 648         Con *floating_con;
 649         if ((floating_con = con_inside_floating(current->con))) {
 650             Con *output = con_get_output(floating_con);
 651             if (cwidth == 0) {
 652                 cwidth = floating_con->rect.width;
 653             } else if (mode_width && strcmp(mode_width, "ppt") == 0) {
 654                 cwidth = output->rect.width * ((double)cwidth / 100.0);
 655             }
 656             if (cheight == 0) {
 657                 cheight = floating_con->rect.height;
 658             } else if (mode_height && strcmp(mode_height, "ppt") == 0) {
 659                 cheight = output->rect.height * ((double)cheight / 100.0);
 660             }
 661             floating_resize(floating_con, cwidth, cheight);
 662         } else {
 663             if (current->con->window && current->con->window->dock) {
 664                 DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 665                 continue;
 666             }
 667
 668             if (cwidth > 0 && mode_width && strcmp(mode_width, "ppt") == 0) {
 669                 /* get the appropriate current container (skip stacked/tabbed cons) */
 670                 Con *target = current->con;
 671                 Con *dummy;
 672                 resize_find_tiling_participants(&target, &dummy, D_LEFT, true);
 673
 674                 /* Calculate new size for the target container */
 675                 double current_percent = target->percent;
 676                 char *action_string;
 677                 long adjustment;
 678
 679                 if (current_percent > cwidth) {
 680                     action_string = "shrink";
 681                     adjustment = (int)(current_percent * 100) - cwidth;
 682                 } else {
 683                     action_string = "grow";
 684                     adjustment = cwidth - (int)(current_percent * 100);
 685                 }
 686
 687                 /* perform resizing and report failure if not possible */
 688                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 689                                                     target, action_string, "width", 0, adjustment)) {
 690                     success = false;
 691                 }
 692             }
 693
 694             if (cheight > 0 && mode_height && strcmp(mode_height, "ppt") == 0) {
 695                 /* get the appropriate current container (skip stacked/tabbed cons) */
 696                 Con *target = current->con;
 697                 Con *dummy;
 698                 resize_find_tiling_participants(&target, &dummy, D_DOWN, true);
 699
 700                 /* Calculate new size for the target container */
 701                 double current_percent = target->percent;
 702                 char *action_string;
 703                 long adjustment;
 704
 705                 if (current_percent > cheight) {
 706                     action_string = "shrink";
 707                     adjustment = (int)(current_percent * 100) - cheight;
 708                 } else {
 709                     action_string = "grow";
 710                     adjustment = cheight - (int)(current_percent * 100);
 711                 }
 712
 713                 /* perform resizing and report failure if not possible */
 714                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 715                                                     target, action_string, "height", 0, adjustment)) {
 716                     success = false;
 717                 }
 718             }
 719         }
 720     }
 721
 722     cmd_output->needs_tree_render = true;
 723     ysuccess(success);
 724 }
 725
 726 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 727     if (border_style == BS_NONE) {
 728         return 0;
 729     }
 730     if (border_width >= 0) {
 731         return logical_px(border_width);
 732     }
 733
 734     const bool is_floating = con_inside_floating(con) != NULL;
 735     /* Load the configured defaults. */
 736     if (is_floating && border_style == config.default_floating_border) {
 737         return config.default_floating_border_width;
 738     } else if (!is_floating && border_style == config.default_border) {
 739         return config.default_border_width;
 740     } else {
 741         /* Use some hardcoded values. */
 742         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 743     }
 744 }
 745
 746 /*
 747  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 748  *
 749  */
 750 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 751     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 752     owindow *current;
 753
 754     HANDLE_EMPTY_MATCH;
 755
 756     TAILQ_FOREACH(current, &owindows, owindows) {
 757         DLOG("matching: %p / %s\n", current->con, current->con->name);
 758
 759         border_style_t border_style;
 760         if (strcmp(border_style_str, "toggle") == 0) {
 761             border_style = (current->con->border_style + 1) % 3;
 762         } else if (strcmp(border_style_str, "normal") == 0) {
 763             border_style = BS_NORMAL;
 764         } else if (strcmp(border_style_str, "pixel") == 0) {
 765             border_style = BS_PIXEL;
 766         } else if (strcmp(border_style_str, "none") == 0) {
 767             border_style = BS_NONE;
 768         } else {
 769             ELOG("BUG: called with border_style=%s\n", border_style_str);
 770             ysuccess(false);
 771             return;
 772         }
 773
 774         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 775         con_set_border_style(current->con, border_style, con_border_width);
 776     }
 777
 778     cmd_output->needs_tree_render = true;
 779     // XXX: default reply for now, make this a better reply
 780     ysuccess(true);
 781 }
 782
 783 /*
 784  * Implementation of 'nop <comment>'.
 785  *
 786  */
 787 void cmd_nop(I3_CMD, const char *comment) {
 788     LOG("-------------------------------------------------\n");
 789     LOG("  NOP: %s\n", comment);
 790     LOG("-------------------------------------------------\n");
 791     ysuccess(true);
 792 }
 793
 794 /*
 795  * Implementation of 'append_layout <path>'.
 796  *
 797  */
 798 void cmd_append_layout(I3_CMD, const char *cpath) {
 799     LOG("Appending layout \"%s\"\n", cpath);
 800
 801     /* Make sure we allow paths like '~/.i3/layout.json' */
 802     char *path = resolve_tilde(cpath);
 803
 804     char *buf = NULL;
 805     ssize_t len;
 806     if ((len = slurp(path, &buf)) < 0) {
 807         /* slurp already logged an error. */
 808         goto out;
 809     }
 810
 811     if (!json_validate(buf, len)) {
 812         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 813         yerror("Could not parse \"%s\" as JSON.", path);
 814         goto out;
 815     }
 816
 817     json_content_t content = json_determine_content(buf, len);
 818     LOG("JSON content = %d\n", content);
 819     if (content == JSON_CONTENT_UNKNOWN) {
 820         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 821         yerror("Could not determine the contents of \"%s\".", path);
 822         goto out;
 823     }
 824
 825     Con *parent = focused;
 826     if (content == JSON_CONTENT_WORKSPACE) {
 827         parent = output_get_content(con_get_output(parent));
 828     } else {
 829         /* We need to append the layout to a split container, since a leaf
 830          * container must not have any children (by definition).
 831          * Note that we explicitly check for workspaces, since they are okay for
 832          * this purpose, but con_accepts_window() returns false for workspaces. */
 833         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 834             parent = parent->parent;
 835     }
 836     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 837     char *errormsg = NULL;
 838     tree_append_json(parent, buf, len, &errormsg);
 839     if (errormsg != NULL) {
 840         yerror(errormsg);
 841         free(errormsg);
 842         /* Note that we continue executing since tree_append_json() has
 843          * side-effects — user-provided layouts can be partly valid, partly
 844          * invalid, leading to half of the placeholder containers being
 845          * created. */
 846     } else {
 847         ysuccess(true);
 848     }
 849
 850     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 851     // false); should be enough, but when sending 'workspace 4; append_layout
 852     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 853     // is not executed yet and will be batched with append_layout’s
 854     // needs_tree_render after the parser finished. We should check if that is
 855     // necessary at all.
 856     render_con(croot, false);
 857
 858     restore_open_placeholder_windows(parent);
 859
 860     if (content == JSON_CONTENT_WORKSPACE)
 861         ipc_send_workspace_event("restored", parent, NULL);
 862
 863     cmd_output->needs_tree_render = true;
 864 out:
 865     free(path);
 866     free(buf);
 867 }
 868
 869 /*
 870  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 871  *
 872  */
 873 void cmd_workspace(I3_CMD, const char *which) {
 874     Con *ws;
 875
 876     DLOG("which=%s\n", which);
 877
 878     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 879         LOG("Cannot switch workspace while in global fullscreen\n");
 880         ysuccess(false);
 881         return;
 882     }
 883
 884     if (strcmp(which, "next") == 0)
 885         ws = workspace_next();
 886     else if (strcmp(which, "prev") == 0)
 887         ws = workspace_prev();
 888     else if (strcmp(which, "next_on_output") == 0)
 889         ws = workspace_next_on_output();
 890     else if (strcmp(which, "prev_on_output") == 0)
 891         ws = workspace_prev_on_output();
 892     else {
 893         ELOG("BUG: called with which=%s\n", which);
 894         ysuccess(false);
 895         return;
 896     }
 897
 898     workspace_show(ws);
 899
 900     cmd_output->needs_tree_render = true;
 901     // XXX: default reply for now, make this a better reply
 902     ysuccess(true);
 903 }
 904
 905 /*
 906  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 907  *
 908  */
 909 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 910     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 911
 912     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 913         LOG("Cannot switch workspace while in global fullscreen\n");
 914         ysuccess(false);
 915         return;
 916     }
 917
 918     long parsed_num = ws_name_to_number(which);
 919     if (parsed_num == -1) {
 920         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 921         yerror("Could not parse number \"%s\"", which);
 922         return;
 923     }
 924
 925     Con *workspace = get_existing_workspace_by_num(parsed_num);
 926     if (!workspace) {
 927         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 928         ysuccess(true);
 929         workspace_show_by_name(which);
 930         cmd_output->needs_tree_render = true;
 931         return;
 932     }
 933     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 934         ysuccess(true);
 935         return;
 936     }
 937     workspace_show(workspace);
 938
 939     cmd_output->needs_tree_render = true;
 940     // XXX: default reply for now, make this a better reply
 941     ysuccess(true);
 942 }
 943
 944 /*
 945  * Implementation of 'workspace back_and_forth'.
 946  *
 947  */
 948 void cmd_workspace_back_and_forth(I3_CMD) {
 949     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 950         LOG("Cannot switch workspace while in global fullscreen\n");
 951         ysuccess(false);
 952         return;
 953     }
 954
 955     workspace_back_and_forth();
 956
 957     cmd_output->needs_tree_render = true;
 958     // XXX: default reply for now, make this a better reply
 959     ysuccess(true);
 960 }
 961
 962 /*
 963  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 964  *
 965  */
 966 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 967     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 968
 969     if (strncasecmp(name, "__", strlen("__")) == 0) {
 970         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 971         ysuccess(false);
 972         return;
 973     }
 974
 975     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 976         LOG("Cannot switch workspace while in global fullscreen\n");
 977         ysuccess(false);
 978         return;
 979     }
 980
 981     DLOG("should switch to workspace %s\n", name);
 982     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 983         ysuccess(true);
 984         return;
 985     }
 986     workspace_show_by_name(name);
 987
 988     cmd_output->needs_tree_render = true;
 989     // XXX: default reply for now, make this a better reply
 990     ysuccess(true);
 991 }
 992
 993 /*
 994  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 995  *
 996  */
 997 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 998     HANDLE_EMPTY_MATCH;
 999
1000     owindow *current = TAILQ_FIRST(&owindows);
1001     if (current == NULL) {
1002         ysuccess(false);
1003         return;
1004     }
1005
1006     /* Marks must be unique, i.e., no two windows must have the same mark. */
1007     if (current != TAILQ_LAST(&owindows, owindows_head)) {
1008         yerror("A mark must not be put onto more than one window");
1009         return;
1010     }
1011
1012     DLOG("matching: %p / %s\n", current->con, current->con->name);
1013
1014     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
1015     if (toggle != NULL) {
1016         con_mark_toggle(current->con, mark, mark_mode);
1017     } else {
1018         con_mark(current->con, mark, mark_mode);
1019     }
1020
1021     cmd_output->needs_tree_render = true;
1022     // XXX: default reply for now, make this a better reply
1023     ysuccess(true);
1024 }
1025
1026 /*
1027  * Implementation of 'unmark [mark]'
1028  *
1029  */
1030 void cmd_unmark(I3_CMD, const char *mark) {
1031     if (match_is_empty(current_match)) {
1032         con_unmark(NULL, mark);
1033     } else {
1034         owindow *current;
1035         TAILQ_FOREACH(current, &owindows, owindows) {
1036             con_unmark(current->con, mark);
1037         }
1038     }
1039
1040     cmd_output->needs_tree_render = true;
1041     // XXX: default reply for now, make this a better reply
1042     ysuccess(true);
1043 }
1044
1045 /*
1046  * Implementation of 'mode <string>'.
1047  *
1048  */
1049 void cmd_mode(I3_CMD, const char *mode) {
1050     DLOG("mode=%s\n", mode);
1051     switch_mode(mode);
1052
1053     // XXX: default reply for now, make this a better reply
1054     ysuccess(true);
1055 }
1056
1057 /*
1058  * Implementation of 'move [window|container] [to] output <str>'.
1059  *
1060  */
1061 void cmd_move_con_to_output(I3_CMD, const char *name) {
1062     DLOG("Should move window to output \"%s\".\n", name);
1063     HANDLE_EMPTY_MATCH;
1064
1065     owindow *current;
1066     bool had_error = false;
1067     TAILQ_FOREACH(current, &owindows, owindows) {
1068         DLOG("matching: %p / %s\n", current->con, current->con->name);
1069
1070         had_error |= !con_move_to_output_name(current->con, name, true);
1071     }
1072
1073     cmd_output->needs_tree_render = true;
1074     ysuccess(!had_error);
1075 }
1076
1077 /*
1078  * Implementation of 'move [container|window] [to] mark <str>'.
1079  *
1080  */
1081 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1082     DLOG("moving window to mark \"%s\"\n", mark);
1083
1084     HANDLE_EMPTY_MATCH;
1085
1086     bool result = true;
1087     owindow *current;
1088     TAILQ_FOREACH(current, &owindows, owindows) {
1089         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1090         result &= con_move_to_mark(current->con, mark);
1091     }
1092
1093     cmd_output->needs_tree_render = true;
1094     ysuccess(result);
1095 }
1096
1097 /*
1098  * Implementation of 'floating enable|disable|toggle'
1099  *
1100  */
1101 void cmd_floating(I3_CMD, const char *floating_mode) {
1102     owindow *current;
1103
1104     DLOG("floating_mode=%s\n", floating_mode);
1105
1106     HANDLE_EMPTY_MATCH;
1107
1108     TAILQ_FOREACH(current, &owindows, owindows) {
1109         DLOG("matching: %p / %s\n", current->con, current->con->name);
1110         if (strcmp(floating_mode, "toggle") == 0) {
1111             DLOG("should toggle mode\n");
1112             toggle_floating_mode(current->con, false);
1113         } else {
1114             DLOG("should switch mode to %s\n", floating_mode);
1115             if (strcmp(floating_mode, "enable") == 0) {
1116                 floating_enable(current->con, false);
1117             } else {
1118                 floating_disable(current->con, false);
1119             }
1120         }
1121     }
1122
1123     cmd_output->needs_tree_render = true;
1124     // XXX: default reply for now, make this a better reply
1125     ysuccess(true);
1126 }
1127
1128 /*
1129  * Implementation of 'move workspace to [output] <str>'.
1130  *
1131  */
1132 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1133     DLOG("should move workspace to output %s\n", name);
1134
1135     HANDLE_EMPTY_MATCH;
1136
1137     owindow *current;
1138     TAILQ_FOREACH(current, &owindows, owindows) {
1139         Con *ws = con_get_workspace(current->con);
1140         if (con_is_internal(ws)) {
1141             continue;
1142         }
1143
1144         Output *current_output = get_output_for_con(ws);
1145         if (current_output == NULL) {
1146             ELOG("Cannot get current output. This is a bug in i3.\n");
1147             ysuccess(false);
1148             return;
1149         }
1150
1151         Output *target_output = get_output_from_string(current_output, name);
1152         if (!target_output) {
1153             ELOG("Could not get output from string \"%s\"\n", name);
1154             ysuccess(false);
1155             return;
1156         }
1157
1158         bool success = workspace_move_to_output(ws, target_output);
1159         if (!success) {
1160             ELOG("Failed to move workspace to output.\n");
1161             ysuccess(false);
1162             return;
1163         }
1164     }
1165
1166     cmd_output->needs_tree_render = true;
1167     // XXX: default reply for now, make this a better reply
1168     ysuccess(true);
1169 }
1170
1171 /*
1172  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1173  *
1174  */
1175 void cmd_split(I3_CMD, const char *direction) {
1176     HANDLE_EMPTY_MATCH;
1177
1178     owindow *current;
1179     LOG("splitting in direction %c\n", direction[0]);
1180     TAILQ_FOREACH(current, &owindows, owindows) {
1181         if (con_is_docked(current->con)) {
1182             ELOG("Cannot split a docked container, skipping.\n");
1183             continue;
1184         }
1185
1186         DLOG("matching: %p / %s\n", current->con, current->con->name);
1187         if (direction[0] == 't') {
1188             layout_t current_layout;
1189             if (current->con->type == CT_WORKSPACE) {
1190                 current_layout = current->con->layout;
1191             } else {
1192                 current_layout = current->con->parent->layout;
1193             }
1194             /* toggling split orientation */
1195             if (current_layout == L_SPLITH) {
1196                 tree_split(current->con, VERT);
1197             } else {
1198                 tree_split(current->con, HORIZ);
1199             }
1200         } else {
1201             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1202         }
1203     }
1204
1205     cmd_output->needs_tree_render = true;
1206     // XXX: default reply for now, make this a better reply
1207     ysuccess(true);
1208 }
1209
1210 /*
1211  * Implementation of 'kill [window|client]'.
1212  *
1213  */
1214 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1215     if (kill_mode_str == NULL)
1216         kill_mode_str = "window";
1217
1218     DLOG("kill_mode=%s\n", kill_mode_str);
1219
1220     int kill_mode;
1221     if (strcmp(kill_mode_str, "window") == 0)
1222         kill_mode = KILL_WINDOW;
1223     else if (strcmp(kill_mode_str, "client") == 0)
1224         kill_mode = KILL_CLIENT;
1225     else {
1226         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1227         ysuccess(false);
1228         return;
1229     }
1230
1231     HANDLE_EMPTY_MATCH;
1232
1233     owindow *current;
1234     TAILQ_FOREACH(current, &owindows, owindows) {
1235         con_close(current->con, kill_mode);
1236     }
1237
1238     cmd_output->needs_tree_render = true;
1239     // XXX: default reply for now, make this a better reply
1240     ysuccess(true);
1241 }
1242
1243 /*
1244  * Implementation of 'exec [--no-startup-id] <command>'.
1245  *
1246  */
1247 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1248     bool no_startup_id = (nosn != NULL);
1249
1250     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1251     start_application(command, no_startup_id);
1252
1253     // XXX: default reply for now, make this a better reply
1254     ysuccess(true);
1255 }
1256
1257 /*
1258  * Implementation of 'focus left|right|up|down'.
1259  *
1260  */
1261 void cmd_focus_direction(I3_CMD, const char *direction) {
1262     switch (parse_direction(direction)) {
1263         case D_LEFT:
1264             tree_next('p', HORIZ);
1265             break;
1266         case D_RIGHT:
1267             tree_next('n', HORIZ);
1268             break;
1269         case D_UP:
1270             tree_next('p', VERT);
1271             break;
1272         case D_DOWN:
1273             tree_next('n', VERT);
1274             break;
1275     }
1276
1277     cmd_output->needs_tree_render = true;
1278     // XXX: default reply for now, make this a better reply
1279     ysuccess(true);
1280 }
1281
1282 /*
1283  * Focus a container and disable any other fullscreen container not permitting the focus.
1284  *
1285  */
1286 static void cmd_focus_force_focus(Con *con) {
1287     /* Disable fullscreen container in workspace with container to be focused. */
1288     Con *ws = con_get_workspace(con);
1289     Con *fullscreen_on_ws = (focused && focused->fullscreen_mode == CF_GLOBAL) ? focused : con_get_fullscreen_con(ws, CF_OUTPUT);
1290     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1291         con_disable_fullscreen(fullscreen_on_ws);
1292     }
1293     con_activate(con);
1294 }
1295
1296 /*
1297  * Implementation of 'focus tiling|floating|mode_toggle'.
1298  *
1299  */
1300 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1301     DLOG("window_mode = %s\n", window_mode);
1302
1303     bool to_floating = false;
1304     if (strcmp(window_mode, "mode_toggle") == 0) {
1305         to_floating = !con_inside_floating(focused);
1306     } else if (strcmp(window_mode, "floating") == 0) {
1307         to_floating = true;
1308     } else if (strcmp(window_mode, "tiling") == 0) {
1309         to_floating = false;
1310     }
1311
1312     Con *ws = con_get_workspace(focused);
1313     Con *current;
1314     bool success = false;
1315     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1316         if ((to_floating && current->type != CT_FLOATING_CON) ||
1317             (!to_floating && current->type == CT_FLOATING_CON))
1318             continue;
1319
1320         cmd_focus_force_focus(con_descend_focused(current));
1321         success = true;
1322         break;
1323     }
1324
1325     if (success) {
1326         cmd_output->needs_tree_render = true;
1327         ysuccess(true);
1328     } else {
1329         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1330     }
1331 }
1332
1333 /*
1334  * Implementation of 'focus parent|child'.
1335  *
1336  */
1337 void cmd_focus_level(I3_CMD, const char *level) {
1338     DLOG("level = %s\n", level);
1339     bool success = false;
1340
1341     /* Focusing the parent can only be allowed if the newly
1342      * focused container won't escape the fullscreen container. */
1343     if (strcmp(level, "parent") == 0) {
1344         if (focused && focused->parent) {
1345             if (con_fullscreen_permits_focusing(focused->parent))
1346                 success = level_up();
1347             else
1348                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1349         }
1350     }
1351
1352     /* Focusing a child should always be allowed. */
1353     else
1354         success = level_down();
1355
1356     cmd_output->needs_tree_render = success;
1357     // XXX: default reply for now, make this a better reply
1358     ysuccess(success);
1359 }
1360
1361 /*
1362  * Implementation of 'focus'.
1363  *
1364  */
1365 void cmd_focus(I3_CMD) {
1366     DLOG("current_match = %p\n", current_match);
1367
1368     if (match_is_empty(current_match)) {
1369         ELOG("You have to specify which window/container should be focused.\n");
1370         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1371
1372         yerror("You have to specify which window/container should be focused");
1373
1374         return;
1375     }
1376
1377     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1378     int count = 0;
1379     owindow *current;
1380     TAILQ_FOREACH(current, &owindows, owindows) {
1381         Con *ws = con_get_workspace(current->con);
1382         /* If no workspace could be found, this was a dock window.
1383          * Just skip it, you cannot focus dock windows. */
1384         if (!ws)
1385             continue;
1386
1387         /* In case this is a scratchpad window, call scratchpad_show(). */
1388         if (ws == __i3_scratch) {
1389             scratchpad_show(current->con);
1390             count++;
1391             /* While for the normal focus case we can change focus multiple
1392              * times and only a single window ends up focused, we could show
1393              * multiple scratchpad windows. So, rather break here. */
1394             break;
1395         }
1396
1397         /* If the container is not on the current workspace,
1398          * workspace_show() will switch to a different workspace and (if
1399          * enabled) trigger a mouse pointer warp to the currently focused
1400          * container (!) on the target workspace.
1401          *
1402          * Therefore, before calling workspace_show(), we make sure that
1403          * 'current' will be focused on the workspace. However, we cannot
1404          * just con_focus(current) because then the pointer will not be
1405          * warped at all (the code thinks we are already there).
1406          *
1407          * So we focus 'current' to make it the currently focused window of
1408          * the target workspace, then revert focus. */
1409         Con *currently_focused = focused;
1410         cmd_focus_force_focus(current->con);
1411         con_activate(currently_focused);
1412
1413         /* Now switch to the workspace, then focus */
1414         workspace_show(ws);
1415         LOG("focusing %p / %s\n", current->con, current->con->name);
1416         con_activate(current->con);
1417         count++;
1418     }
1419
1420     if (count > 1)
1421         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1422             "while only exactly one container can be focused at a time.\n",
1423             count);
1424
1425     cmd_output->needs_tree_render = true;
1426     ysuccess(count > 0);
1427 }
1428
1429 /*
1430  * Implementation of 'fullscreen enable|toggle [global]' and
1431  *                   'fullscreen disable'
1432  *
1433  */
1434 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1435     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1436     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1437     owindow *current;
1438
1439     HANDLE_EMPTY_MATCH;
1440
1441     TAILQ_FOREACH(current, &owindows, owindows) {
1442         DLOG("matching: %p / %s\n", current->con, current->con->name);
1443         if (strcmp(action, "toggle") == 0) {
1444             con_toggle_fullscreen(current->con, mode);
1445         } else if (strcmp(action, "enable") == 0) {
1446             con_enable_fullscreen(current->con, mode);
1447         } else if (strcmp(action, "disable") == 0) {
1448             con_disable_fullscreen(current->con);
1449         }
1450     }
1451
1452     cmd_output->needs_tree_render = true;
1453     // XXX: default reply for now, make this a better reply
1454     ysuccess(true);
1455 }
1456
1457 /*
1458  * Implementation of 'sticky enable|disable|toggle'.
1459  *
1460  */
1461 void cmd_sticky(I3_CMD, const char *action) {
1462     DLOG("%s sticky on window\n", action);
1463     HANDLE_EMPTY_MATCH;
1464
1465     owindow *current;
1466     TAILQ_FOREACH(current, &owindows, owindows) {
1467         if (current->con->window == NULL) {
1468             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1469             continue;
1470         }
1471         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1472
1473         bool sticky = false;
1474         if (strcmp(action, "enable") == 0)
1475             sticky = true;
1476         else if (strcmp(action, "disable") == 0)
1477             sticky = false;
1478         else if (strcmp(action, "toggle") == 0)
1479             sticky = !current->con->sticky;
1480
1481         current->con->sticky = sticky;
1482         ewmh_update_sticky(current->con->window->id, sticky);
1483     }
1484
1485     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1486      * sure it gets pushed to the front now. */
1487     output_push_sticky_windows(focused);
1488
1489     ewmh_update_wm_desktop();
1490
1491     cmd_output->needs_tree_render = true;
1492     ysuccess(true);
1493 }
1494
1495 /*
1496  * Implementation of 'move <direction> [<pixels> [px]]'.
1497  *
1498  */
1499 void cmd_move_direction(I3_CMD, const char *direction_str, long move_px) {
1500     owindow *current;
1501     HANDLE_EMPTY_MATCH;
1502
1503     Con *initially_focused = focused;
1504     direction_t direction = parse_direction(direction_str);
1505
1506     TAILQ_FOREACH(current, &owindows, owindows) {
1507         DLOG("moving in direction %s, px %ld\n", direction_str, move_px);
1508         if (con_is_floating(current->con)) {
1509             DLOG("floating move with %ld pixels\n", move_px);
1510             Rect newrect = current->con->parent->rect;
1511
1512             switch (direction) {
1513                 case D_LEFT:
1514                     newrect.x -= move_px;
1515                     break;
1516                 case D_RIGHT:
1517                     newrect.x += move_px;
1518                     break;
1519                 case D_UP:
1520                     newrect.y -= move_px;
1521                     break;
1522                 case D_DOWN:
1523                     newrect.y += move_px;
1524                     break;
1525             }
1526
1527             floating_reposition(current->con->parent, newrect);
1528         } else {
1529             tree_move(current->con, direction);
1530             cmd_output->needs_tree_render = true;
1531         }
1532     }
1533
1534     /* the move command should not disturb focus */
1535     if (focused != initially_focused)
1536         con_activate(initially_focused);
1537
1538     // XXX: default reply for now, make this a better reply
1539     ysuccess(true);
1540 }
1541
1542 /*
1543  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1544  *
1545  */
1546 void cmd_layout(I3_CMD, const char *layout_str) {
1547     HANDLE_EMPTY_MATCH;
1548
1549     layout_t layout;
1550     if (!layout_from_name(layout_str, &layout)) {
1551         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1552         return;
1553     }
1554
1555     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1556
1557     owindow *current;
1558     TAILQ_FOREACH(current, &owindows, owindows) {
1559         if (con_is_docked(current->con)) {
1560             ELOG("cannot change layout of a docked container, skipping it.\n");
1561             continue;
1562         }
1563
1564         DLOG("matching: %p / %s\n", current->con, current->con->name);
1565         con_set_layout(current->con, layout);
1566     }
1567
1568     cmd_output->needs_tree_render = true;
1569     // XXX: default reply for now, make this a better reply
1570     ysuccess(true);
1571 }
1572
1573 /*
1574  * Implementation of 'layout toggle [all|split]'.
1575  *
1576  */
1577 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1578     owindow *current;
1579
1580     if (toggle_mode == NULL)
1581         toggle_mode = "default";
1582
1583     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1584
1585     /* check if the match is empty, not if the result is empty */
1586     if (match_is_empty(current_match))
1587         con_toggle_layout(focused, toggle_mode);
1588     else {
1589         TAILQ_FOREACH(current, &owindows, owindows) {
1590             DLOG("matching: %p / %s\n", current->con, current->con->name);
1591             con_toggle_layout(current->con, toggle_mode);
1592         }
1593     }
1594
1595     cmd_output->needs_tree_render = true;
1596     // XXX: default reply for now, make this a better reply
1597     ysuccess(true);
1598 }
1599
1600 /*
1601  * Implementation of 'exit'.
1602  *
1603  */
1604 void cmd_exit(I3_CMD) {
1605     LOG("Exiting due to user command.\n");
1606 #ifdef I3_ASAN_ENABLED
1607     __lsan_do_leak_check();
1608 #endif
1609     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1610     unlink(config.ipc_socket_path);
1611     xcb_disconnect(conn);
1612     exit(0);
1613
1614     /* unreached */
1615 }
1616
1617 /*
1618  * Implementation of 'reload'.
1619  *
1620  */
1621 void cmd_reload(I3_CMD) {
1622     LOG("reloading\n");
1623     kill_nagbar(&config_error_nagbar_pid, false);
1624     kill_nagbar(&command_error_nagbar_pid, false);
1625     load_configuration(conn, NULL, true);
1626     x_set_i3_atoms();
1627     /* Send an IPC event just in case the ws names have changed */
1628     ipc_send_workspace_event("reload", NULL, NULL);
1629     /* Send an update event for the barconfig just in case it has changed */
1630     update_barconfig();
1631
1632     // XXX: default reply for now, make this a better reply
1633     ysuccess(true);
1634 }
1635
1636 /*
1637  * Implementation of 'restart'.
1638  *
1639  */
1640 void cmd_restart(I3_CMD) {
1641     LOG("restarting i3\n");
1642     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1643     unlink(config.ipc_socket_path);
1644     /* We need to call this manually since atexit handlers don’t get called
1645      * when exec()ing */
1646     purge_zerobyte_logfile();
1647     i3_restart(false);
1648
1649     // XXX: default reply for now, make this a better reply
1650     ysuccess(true);
1651 }
1652
1653 /*
1654  * Implementation of 'open'.
1655  *
1656  */
1657 void cmd_open(I3_CMD) {
1658     LOG("opening new container\n");
1659     Con *con = tree_open_con(NULL, NULL);
1660     con->layout = L_SPLITH;
1661     con_activate(con);
1662
1663     y(map_open);
1664     ystr("success");
1665     y(bool, true);
1666     ystr("id");
1667     y(integer, (uintptr_t)con);
1668     y(map_close);
1669
1670     cmd_output->needs_tree_render = true;
1671 }
1672
1673 /*
1674  * Implementation of 'focus output <output>'.
1675  *
1676  */
1677 void cmd_focus_output(I3_CMD, const char *name) {
1678     owindow *current;
1679
1680     DLOG("name = %s\n", name);
1681
1682     HANDLE_EMPTY_MATCH;
1683
1684     /* get the output */
1685     Output *current_output = NULL;
1686     Output *output;
1687
1688     TAILQ_FOREACH(current, &owindows, owindows)
1689     current_output = get_output_for_con(current->con);
1690     assert(current_output != NULL);
1691
1692     output = get_output_from_string(current_output, name);
1693
1694     if (!output) {
1695         LOG("No such output found.\n");
1696         ysuccess(false);
1697         return;
1698     }
1699
1700     /* get visible workspace on output */
1701     Con *ws = NULL;
1702     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1703     if (!ws) {
1704         ysuccess(false);
1705         return;
1706     }
1707
1708     workspace_show(ws);
1709
1710     cmd_output->needs_tree_render = true;
1711     // XXX: default reply for now, make this a better reply
1712     ysuccess(true);
1713 }
1714
1715 /*
1716  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1717  *
1718  */
1719 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1720     bool has_error = false;
1721
1722     owindow *current;
1723     HANDLE_EMPTY_MATCH;
1724
1725     TAILQ_FOREACH(current, &owindows, owindows) {
1726         if (!con_is_floating(current->con)) {
1727             ELOG("Cannot change position. The window/container is not floating\n");
1728
1729             if (!has_error) {
1730                 yerror("Cannot change position of a window/container because it is not floating.");
1731                 has_error = true;
1732             }
1733
1734             continue;
1735         }
1736
1737         Rect newrect = current->con->parent->rect;
1738
1739         DLOG("moving to position %ld %ld\n", x, y);
1740         newrect.x = x;
1741         newrect.y = y;
1742
1743         if (!floating_reposition(current->con->parent, newrect)) {
1744             yerror("Cannot move window/container out of bounds.");
1745             has_error = true;
1746         }
1747     }
1748
1749     if (!has_error)
1750         ysuccess(true);
1751 }
1752
1753 /*
1754  * Implementation of 'move [window|container] [to] [absolute] position center
1755  *
1756  */
1757 void cmd_move_window_to_center(I3_CMD, const char *method) {
1758     bool has_error = false;
1759     HANDLE_EMPTY_MATCH;
1760
1761     owindow *current;
1762     TAILQ_FOREACH(current, &owindows, owindows) {
1763         Con *floating_con = con_inside_floating(current->con);
1764         if (floating_con == NULL) {
1765             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1766                  current->con, current->con->name);
1767
1768             if (!has_error) {
1769                 yerror("Cannot change position of a window/container because it is not floating.");
1770                 has_error = true;
1771             }
1772
1773             continue;
1774         }
1775
1776         if (strcmp(method, "absolute") == 0) {
1777             DLOG("moving to absolute center\n");
1778             floating_center(floating_con, croot->rect);
1779
1780             floating_maybe_reassign_ws(floating_con);
1781             cmd_output->needs_tree_render = true;
1782         }
1783
1784         if (strcmp(method, "position") == 0) {
1785             DLOG("moving to center\n");
1786             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1787
1788             cmd_output->needs_tree_render = true;
1789         }
1790     }
1791
1792     // XXX: default reply for now, make this a better reply
1793     if (!has_error)
1794         ysuccess(true);
1795 }
1796
1797 /*
1798  * Implementation of 'move [window|container] [to] position mouse'
1799  *
1800  */
1801 void cmd_move_window_to_mouse(I3_CMD) {
1802     HANDLE_EMPTY_MATCH;
1803
1804     owindow *current;
1805     TAILQ_FOREACH(current, &owindows, owindows) {
1806         Con *floating_con = con_inside_floating(current->con);
1807         if (floating_con == NULL) {
1808             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1809                  current->con, current->con->name);
1810             continue;
1811         }
1812
1813         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1814         floating_move_to_pointer(floating_con);
1815     }
1816
1817     cmd_output->needs_tree_render = true;
1818     ysuccess(true);
1819 }
1820
1821 /*
1822  * Implementation of 'move scratchpad'.
1823  *
1824  */
1825 void cmd_move_scratchpad(I3_CMD) {
1826     DLOG("should move window to scratchpad\n");
1827     owindow *current;
1828
1829     HANDLE_EMPTY_MATCH;
1830
1831     TAILQ_FOREACH(current, &owindows, owindows) {
1832         DLOG("matching: %p / %s\n", current->con, current->con->name);
1833         scratchpad_move(current->con);
1834     }
1835
1836     cmd_output->needs_tree_render = true;
1837     // XXX: default reply for now, make this a better reply
1838     ysuccess(true);
1839 }
1840
1841 /*
1842  * Implementation of 'scratchpad show'.
1843  *
1844  */
1845 void cmd_scratchpad_show(I3_CMD) {
1846     DLOG("should show scratchpad window\n");
1847     owindow *current;
1848     bool result = false;
1849
1850     if (match_is_empty(current_match)) {
1851         result = scratchpad_show(NULL);
1852     } else {
1853         TAILQ_FOREACH(current, &owindows, owindows) {
1854             DLOG("matching: %p / %s\n", current->con, current->con->name);
1855             result |= scratchpad_show(current->con);
1856         }
1857     }
1858
1859     cmd_output->needs_tree_render = true;
1860
1861     ysuccess(result);
1862 }
1863
1864 /*
1865  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1866  *
1867  */
1868 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1869     HANDLE_EMPTY_MATCH;
1870
1871     owindow *match = TAILQ_FIRST(&owindows);
1872     if (match == NULL) {
1873         DLOG("No match found for swapping.\n");
1874         return;
1875     }
1876
1877     Con *con;
1878     if (strcmp(mode, "id") == 0) {
1879         long target;
1880         if (!parse_long(arg, &target, 0)) {
1881             yerror("Failed to parse %s into a window id.\n", arg);
1882             return;
1883         }
1884
1885         con = con_by_window_id(target);
1886     } else if (strcmp(mode, "con_id") == 0) {
1887         long target;
1888         if (!parse_long(arg, &target, 0)) {
1889             yerror("Failed to parse %s into a container id.\n", arg);
1890             return;
1891         }
1892
1893         con = con_by_con_id(target);
1894     } else if (strcmp(mode, "mark") == 0) {
1895         con = con_by_mark(arg);
1896     } else {
1897         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1898         return;
1899     }
1900
1901     if (con == NULL) {
1902         yerror("Could not find container for %s = %s\n", mode, arg);
1903         return;
1904     }
1905
1906     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1907         DLOG("More than one container matched the swap command, only using the first one.");
1908     }
1909
1910     if (match->con == NULL) {
1911         DLOG("Match %p has no container.\n", match);
1912         ysuccess(false);
1913         return;
1914     }
1915
1916     DLOG("Swapping %p with %p.\n", match->con, con);
1917     bool result = con_swap(match->con, con);
1918
1919     cmd_output->needs_tree_render = true;
1920     ysuccess(result);
1921 }
1922
1923 /*
1924  * Implementation of 'title_format <format>'
1925  *
1926  */
1927 void cmd_title_format(I3_CMD, const char *format) {
1928     DLOG("setting title_format to \"%s\"\n", format);
1929     HANDLE_EMPTY_MATCH;
1930
1931     owindow *current;
1932     TAILQ_FOREACH(current, &owindows, owindows) {
1933         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1934         FREE(current->con->title_format);
1935
1936         /* If we only display the title without anything else, we can skip the parsing step,
1937          * so we remove the title format altogether. */
1938         if (strcasecmp(format, "%title") != 0) {
1939             current->con->title_format = sstrdup(format);
1940
1941             if (current->con->window != NULL) {
1942                 i3String *formatted_title = con_parse_title_format(current->con);
1943                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1944                 I3STRING_FREE(formatted_title);
1945             }
1946         } else {
1947             if (current->con->window != NULL) {
1948                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1949                 ewmh_update_visible_name(current->con->window->id, NULL);
1950             }
1951         }
1952
1953         if (current->con->window != NULL) {
1954             /* Make sure the window title is redrawn immediately. */
1955             current->con->window->name_x_changed = true;
1956         } else {
1957             /* For windowless containers we also need to force the redrawing. */
1958             FREE(current->con->deco_render_params);
1959         }
1960     }
1961
1962     cmd_output->needs_tree_render = true;
1963     ysuccess(true);
1964 }
1965
1966 /*
1967  * Implementation of 'rename workspace [<name>] to <name>'
1968  *
1969  */
1970 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1971     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1972         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1973         ysuccess(false);
1974         return;
1975     }
1976     if (old_name) {
1977         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1978     } else {
1979         LOG("Renaming current workspace to \"%s\"\n", new_name);
1980     }
1981
1982     Con *workspace;
1983     if (old_name) {
1984         workspace = get_existing_workspace_by_name(old_name);
1985     } else {
1986         workspace = con_get_workspace(focused);
1987         old_name = workspace->name;
1988     }
1989
1990     if (!workspace) {
1991         yerror("Old workspace \"%s\" not found", old_name);
1992         return;
1993     }
1994
1995     Con *check_dest = get_existing_workspace_by_name(new_name);
1996
1997     /* If check_dest == workspace, the user might be changing the case of the
1998      * workspace, or it might just be a no-op. */
1999     if (check_dest != NULL && check_dest != workspace) {
2000         yerror("New workspace \"%s\" already exists", new_name);
2001         return;
2002     }
2003
2004     /* Change the name and try to parse it as a number. */
2005     /* old_name might refer to workspace->name, so copy it before free()ing */
2006     char *old_name_copy = sstrdup(old_name);
2007     FREE(workspace->name);
2008     workspace->name = sstrdup(new_name);
2009
2010     workspace->num = ws_name_to_number(new_name);
2011     LOG("num = %d\n", workspace->num);
2012
2013     /* By re-attaching, the sort order will be correct afterwards. */
2014     Con *previously_focused = focused;
2015     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
2016     Con *parent = workspace->parent;
2017     con_detach(workspace);
2018     con_attach(workspace, parent, false);
2019
2020     /* Move the workspace to the correct output if it has an assignment */
2021     struct Workspace_Assignment *assignment = NULL;
2022     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
2023         if (assignment->output == NULL)
2024             continue;
2025         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
2026             continue;
2027         }
2028
2029         Output *target_output = get_output_by_name(assignment->output, true);
2030         if (!target_output) {
2031             LOG("Could not get output named \"%s\"\n", assignment->output);
2032             continue;
2033         }
2034         if (!output_triggers_assignment(target_output, assignment)) {
2035             continue;
2036         }
2037         workspace_move_to_output(workspace, target_output);
2038
2039         break;
2040     }
2041
2042     bool can_restore_focus = previously_focused != NULL;
2043     /* NB: If previously_focused is a workspace we can't work directly with it
2044      * since it might have been cleaned up by workspace_show() already,
2045      * depending on the focus order/number of other workspaces on the output.
2046      * Instead, we loop through the available workspaces and only focus
2047      * previously_focused if we still find it. */
2048     if (previously_focused_content) {
2049         Con *workspace = NULL;
2050         GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2051         can_restore_focus &= (workspace != NULL);
2052     }
2053
2054     if (can_restore_focus) {
2055         /* Restore the previous focus since con_attach messes with the focus. */
2056         workspace_show(con_get_workspace(previously_focused));
2057         con_focus(previously_focused);
2058     }
2059
2060     cmd_output->needs_tree_render = true;
2061     ysuccess(true);
2062
2063     ipc_send_workspace_event("rename", workspace, NULL);
2064     ewmh_update_desktop_names();
2065     ewmh_update_desktop_viewport();
2066     ewmh_update_current_desktop();
2067
2068     startup_sequence_rename_workspace(old_name_copy, new_name);
2069     free(old_name_copy);
2070 }
2071
2072 /*
2073  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2074  *
2075  */
2076 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2077     int mode = M_DOCK;
2078     bool toggle = false;
2079     if (strcmp(bar_mode, "dock") == 0)
2080         mode = M_DOCK;
2081     else if (strcmp(bar_mode, "hide") == 0)
2082         mode = M_HIDE;
2083     else if (strcmp(bar_mode, "invisible") == 0)
2084         mode = M_INVISIBLE;
2085     else if (strcmp(bar_mode, "toggle") == 0)
2086         toggle = true;
2087     else {
2088         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2089         return false;
2090     }
2091
2092     bool changed_sth = false;
2093     Barconfig *current = NULL;
2094     TAILQ_FOREACH(current, &barconfigs, configs) {
2095         if (bar_id && strcmp(current->id, bar_id) != 0)
2096             continue;
2097
2098         if (toggle)
2099             mode = (current->mode + 1) % 2;
2100
2101         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2102         current->mode = mode;
2103         changed_sth = true;
2104
2105         if (bar_id)
2106             break;
2107     }
2108
2109     if (bar_id && !changed_sth) {
2110         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2111         return false;
2112     }
2113
2114     return true;
2115 }
2116
2117 /*
2118  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2119  *
2120  */
2121 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2122     int hidden_state = S_SHOW;
2123     bool toggle = false;
2124     if (strcmp(bar_hidden_state, "hide") == 0)
2125         hidden_state = S_HIDE;
2126     else if (strcmp(bar_hidden_state, "show") == 0)
2127         hidden_state = S_SHOW;
2128     else if (strcmp(bar_hidden_state, "toggle") == 0)
2129         toggle = true;
2130     else {
2131         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2132         return false;
2133     }
2134
2135     bool changed_sth = false;
2136     Barconfig *current = NULL;
2137     TAILQ_FOREACH(current, &barconfigs, configs) {
2138         if (bar_id && strcmp(current->id, bar_id) != 0)
2139             continue;
2140
2141         if (toggle)
2142             hidden_state = (current->hidden_state + 1) % 2;
2143
2144         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2145         current->hidden_state = hidden_state;
2146         changed_sth = true;
2147
2148         if (bar_id)
2149             break;
2150     }
2151
2152     if (bar_id && !changed_sth) {
2153         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2154         return false;
2155     }
2156
2157     return true;
2158 }
2159
2160 /*
2161  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2162  *
2163  */
2164 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2165     bool ret;
2166     if (strcmp(bar_type, "mode") == 0)
2167         ret = cmd_bar_mode(bar_value, bar_id);
2168     else if (strcmp(bar_type, "hidden_state") == 0)
2169         ret = cmd_bar_hidden_state(bar_value, bar_id);
2170     else {
2171         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2172         ret = false;
2173     }
2174
2175     ysuccess(ret);
2176     if (!ret)
2177         return;
2178
2179     update_barconfig();
2180 }
2181
2182 /*
2183  * Implementation of 'shmlog <size>|toggle|on|off'
2184  *
2185  */
2186 void cmd_shmlog(I3_CMD, const char *argument) {
2187     if (!strcmp(argument, "toggle"))
2188         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2189         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2190     else if (!strcmp(argument, "on"))
2191         shmlog_size = default_shmlog_size;
2192     else if (!strcmp(argument, "off"))
2193         shmlog_size = 0;
2194     else {
2195         long new_size = 0;
2196         if (!parse_long(argument, &new_size, 0)) {
2197             yerror("Failed to parse %s into a shmlog size.\n", argument);
2198             return;
2199         }
2200         /* If shm logging now, restart logging with the new size. */
2201         if (shmlog_size > 0) {
2202             shmlog_size = 0;
2203             LOG("Restarting shm logging...\n");
2204             init_logging();
2205         }
2206         shmlog_size = (int)new_size;
2207     }
2208     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2209     init_logging();
2210     update_shmlog_atom();
2211     ysuccess(true);
2212 }
2213
2214 /*
2215  * Implementation of 'debuglog toggle|on|off'
2216  *
2217  */
2218 void cmd_debuglog(I3_CMD, const char *argument) {
2219     bool logging = get_debug_logging();
2220     if (!strcmp(argument, "toggle")) {
2221         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2222         set_debug_logging(!logging);
2223     } else if (!strcmp(argument, "on") && !logging) {
2224         LOG("Enabling debug logging\n");
2225         set_debug_logging(true);
2226     } else if (!strcmp(argument, "off") && logging) {
2227         LOG("Disabling debug logging\n");
2228         set_debug_logging(false);
2229     }
2230     // XXX: default reply for now, make this a better reply
2231     ysuccess(true);
2232 }