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 *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 *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, direction,
 616                                                     resize_px, resize_ppt))
 617                     return;
 618             } else {
 619                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 620                                                  current->con, 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                 long adjustment;
 677
 678                 if (current_percent > cwidth) {
 679                     adjustment = (int)(current_percent * 100) - cwidth;
 680                 } else {
 681                     adjustment = cwidth - (int)(current_percent * 100);
 682                 }
 683
 684                 /* perform resizing and report failure if not possible */
 685                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 686                                                     target, "width", 0, adjustment)) {
 687                     success = false;
 688                 }
 689             }
 690
 691             if (cheight > 0 && mode_height && strcmp(mode_height, "ppt") == 0) {
 692                 /* get the appropriate current container (skip stacked/tabbed cons) */
 693                 Con *target = current->con;
 694                 Con *dummy;
 695                 resize_find_tiling_participants(&target, &dummy, D_DOWN, true);
 696
 697                 /* Calculate new size for the target container */
 698                 double current_percent = target->percent;
 699                 long adjustment;
 700
 701                 if (current_percent > cheight) {
 702                     adjustment = (int)(current_percent * 100) - cheight;
 703                 } else {
 704                     adjustment = cheight - (int)(current_percent * 100);
 705                 }
 706
 707                 /* perform resizing and report failure if not possible */
 708                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 709                                                     target, "height", 0, adjustment)) {
 710                     success = false;
 711                 }
 712             }
 713         }
 714     }
 715
 716     cmd_output->needs_tree_render = true;
 717     ysuccess(success);
 718 }
 719
 720 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 721     if (border_style == BS_NONE) {
 722         return 0;
 723     }
 724     if (border_width >= 0) {
 725         return logical_px(border_width);
 726     }
 727
 728     const bool is_floating = con_inside_floating(con) != NULL;
 729     /* Load the configured defaults. */
 730     if (is_floating && border_style == config.default_floating_border) {
 731         return config.default_floating_border_width;
 732     } else if (!is_floating && border_style == config.default_border) {
 733         return config.default_border_width;
 734     } else {
 735         /* Use some hardcoded values. */
 736         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 737     }
 738 }
 739
 740 /*
 741  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 742  *
 743  */
 744 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 745     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 746     owindow *current;
 747
 748     HANDLE_EMPTY_MATCH;
 749
 750     TAILQ_FOREACH(current, &owindows, owindows) {
 751         DLOG("matching: %p / %s\n", current->con, current->con->name);
 752
 753         border_style_t border_style;
 754         if (strcmp(border_style_str, "toggle") == 0) {
 755             border_style = (current->con->border_style + 1) % 3;
 756         } else if (strcmp(border_style_str, "normal") == 0) {
 757             border_style = BS_NORMAL;
 758         } else if (strcmp(border_style_str, "pixel") == 0) {
 759             border_style = BS_PIXEL;
 760         } else if (strcmp(border_style_str, "none") == 0) {
 761             border_style = BS_NONE;
 762         } else {
 763             ELOG("BUG: called with border_style=%s\n", border_style_str);
 764             ysuccess(false);
 765             return;
 766         }
 767
 768         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 769         con_set_border_style(current->con, border_style, con_border_width);
 770     }
 771
 772     cmd_output->needs_tree_render = true;
 773     // XXX: default reply for now, make this a better reply
 774     ysuccess(true);
 775 }
 776
 777 /*
 778  * Implementation of 'nop <comment>'.
 779  *
 780  */
 781 void cmd_nop(I3_CMD, const char *comment) {
 782     LOG("-------------------------------------------------\n");
 783     LOG("  NOP: %s\n", comment);
 784     LOG("-------------------------------------------------\n");
 785     ysuccess(true);
 786 }
 787
 788 /*
 789  * Implementation of 'append_layout <path>'.
 790  *
 791  */
 792 void cmd_append_layout(I3_CMD, const char *cpath) {
 793     LOG("Appending layout \"%s\"\n", cpath);
 794
 795     /* Make sure we allow paths like '~/.i3/layout.json' */
 796     char *path = resolve_tilde(cpath);
 797
 798     char *buf = NULL;
 799     ssize_t len;
 800     if ((len = slurp(path, &buf)) < 0) {
 801         /* slurp already logged an error. */
 802         goto out;
 803     }
 804
 805     if (!json_validate(buf, len)) {
 806         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 807         yerror("Could not parse \"%s\" as JSON.", path);
 808         goto out;
 809     }
 810
 811     json_content_t content = json_determine_content(buf, len);
 812     LOG("JSON content = %d\n", content);
 813     if (content == JSON_CONTENT_UNKNOWN) {
 814         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 815         yerror("Could not determine the contents of \"%s\".", path);
 816         goto out;
 817     }
 818
 819     Con *parent = focused;
 820     if (content == JSON_CONTENT_WORKSPACE) {
 821         parent = output_get_content(con_get_output(parent));
 822     } else {
 823         /* We need to append the layout to a split container, since a leaf
 824          * container must not have any children (by definition).
 825          * Note that we explicitly check for workspaces, since they are okay for
 826          * this purpose, but con_accepts_window() returns false for workspaces. */
 827         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 828             parent = parent->parent;
 829     }
 830     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 831     char *errormsg = NULL;
 832     tree_append_json(parent, buf, len, &errormsg);
 833     if (errormsg != NULL) {
 834         yerror(errormsg);
 835         free(errormsg);
 836         /* Note that we continue executing since tree_append_json() has
 837          * side-effects — user-provided layouts can be partly valid, partly
 838          * invalid, leading to half of the placeholder containers being
 839          * created. */
 840     } else {
 841         ysuccess(true);
 842     }
 843
 844     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 845     // false); should be enough, but when sending 'workspace 4; append_layout
 846     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 847     // is not executed yet and will be batched with append_layout’s
 848     // needs_tree_render after the parser finished. We should check if that is
 849     // necessary at all.
 850     render_con(croot, false);
 851
 852     restore_open_placeholder_windows(parent);
 853
 854     if (content == JSON_CONTENT_WORKSPACE)
 855         ipc_send_workspace_event("restored", parent, NULL);
 856
 857     cmd_output->needs_tree_render = true;
 858 out:
 859     free(path);
 860     free(buf);
 861 }
 862
 863 /*
 864  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 865  *
 866  */
 867 void cmd_workspace(I3_CMD, const char *which) {
 868     Con *ws;
 869
 870     DLOG("which=%s\n", which);
 871
 872     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 873         LOG("Cannot switch workspace while in global fullscreen\n");
 874         ysuccess(false);
 875         return;
 876     }
 877
 878     if (strcmp(which, "next") == 0)
 879         ws = workspace_next();
 880     else if (strcmp(which, "prev") == 0)
 881         ws = workspace_prev();
 882     else if (strcmp(which, "next_on_output") == 0)
 883         ws = workspace_next_on_output();
 884     else if (strcmp(which, "prev_on_output") == 0)
 885         ws = workspace_prev_on_output();
 886     else {
 887         ELOG("BUG: called with which=%s\n", which);
 888         ysuccess(false);
 889         return;
 890     }
 891
 892     workspace_show(ws);
 893
 894     cmd_output->needs_tree_render = true;
 895     // XXX: default reply for now, make this a better reply
 896     ysuccess(true);
 897 }
 898
 899 /*
 900  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 901  *
 902  */
 903 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 904     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 905
 906     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 907         LOG("Cannot switch workspace while in global fullscreen\n");
 908         ysuccess(false);
 909         return;
 910     }
 911
 912     long parsed_num = ws_name_to_number(which);
 913     if (parsed_num == -1) {
 914         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 915         yerror("Could not parse number \"%s\"", which);
 916         return;
 917     }
 918
 919     Con *workspace = get_existing_workspace_by_num(parsed_num);
 920     if (!workspace) {
 921         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 922         ysuccess(true);
 923         workspace_show_by_name(which);
 924         cmd_output->needs_tree_render = true;
 925         return;
 926     }
 927     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 928         ysuccess(true);
 929         return;
 930     }
 931     workspace_show(workspace);
 932
 933     cmd_output->needs_tree_render = true;
 934     // XXX: default reply for now, make this a better reply
 935     ysuccess(true);
 936 }
 937
 938 /*
 939  * Implementation of 'workspace back_and_forth'.
 940  *
 941  */
 942 void cmd_workspace_back_and_forth(I3_CMD) {
 943     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 944         LOG("Cannot switch workspace while in global fullscreen\n");
 945         ysuccess(false);
 946         return;
 947     }
 948
 949     workspace_back_and_forth();
 950
 951     cmd_output->needs_tree_render = true;
 952     // XXX: default reply for now, make this a better reply
 953     ysuccess(true);
 954 }
 955
 956 /*
 957  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 958  *
 959  */
 960 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 961     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 962
 963     if (strncasecmp(name, "__", strlen("__")) == 0) {
 964         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 965         ysuccess(false);
 966         return;
 967     }
 968
 969     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 970         LOG("Cannot switch workspace while in global fullscreen\n");
 971         ysuccess(false);
 972         return;
 973     }
 974
 975     DLOG("should switch to workspace %s\n", name);
 976     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 977         ysuccess(true);
 978         return;
 979     }
 980     workspace_show_by_name(name);
 981
 982     cmd_output->needs_tree_render = true;
 983     // XXX: default reply for now, make this a better reply
 984     ysuccess(true);
 985 }
 986
 987 /*
 988  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 989  *
 990  */
 991 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 992     HANDLE_EMPTY_MATCH;
 993
 994     owindow *current = TAILQ_FIRST(&owindows);
 995     if (current == NULL) {
 996         ysuccess(false);
 997         return;
 998     }
 999
1000     /* Marks must be unique, i.e., no two windows must have the same mark. */
1001     if (current != TAILQ_LAST(&owindows, owindows_head)) {
1002         yerror("A mark must not be put onto more than one window");
1003         return;
1004     }
1005
1006     DLOG("matching: %p / %s\n", current->con, current->con->name);
1007
1008     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
1009     if (toggle != NULL) {
1010         con_mark_toggle(current->con, mark, mark_mode);
1011     } else {
1012         con_mark(current->con, mark, mark_mode);
1013     }
1014
1015     cmd_output->needs_tree_render = true;
1016     // XXX: default reply for now, make this a better reply
1017     ysuccess(true);
1018 }
1019
1020 /*
1021  * Implementation of 'unmark [mark]'
1022  *
1023  */
1024 void cmd_unmark(I3_CMD, const char *mark) {
1025     if (match_is_empty(current_match)) {
1026         con_unmark(NULL, mark);
1027     } else {
1028         owindow *current;
1029         TAILQ_FOREACH(current, &owindows, owindows) {
1030             con_unmark(current->con, mark);
1031         }
1032     }
1033
1034     cmd_output->needs_tree_render = true;
1035     // XXX: default reply for now, make this a better reply
1036     ysuccess(true);
1037 }
1038
1039 /*
1040  * Implementation of 'mode <string>'.
1041  *
1042  */
1043 void cmd_mode(I3_CMD, const char *mode) {
1044     DLOG("mode=%s\n", mode);
1045     switch_mode(mode);
1046
1047     // XXX: default reply for now, make this a better reply
1048     ysuccess(true);
1049 }
1050
1051 /*
1052  * Implementation of 'move [window|container] [to] output <str>'.
1053  *
1054  */
1055 void cmd_move_con_to_output(I3_CMD, const char *name) {
1056     DLOG("Should move window to output \"%s\".\n", name);
1057     HANDLE_EMPTY_MATCH;
1058
1059     owindow *current;
1060     bool had_error = false;
1061     TAILQ_FOREACH(current, &owindows, owindows) {
1062         DLOG("matching: %p / %s\n", current->con, current->con->name);
1063
1064         had_error |= !con_move_to_output_name(current->con, name, true);
1065     }
1066
1067     cmd_output->needs_tree_render = true;
1068     ysuccess(!had_error);
1069 }
1070
1071 /*
1072  * Implementation of 'move [container|window] [to] mark <str>'.
1073  *
1074  */
1075 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1076     DLOG("moving window to mark \"%s\"\n", mark);
1077
1078     HANDLE_EMPTY_MATCH;
1079
1080     bool result = true;
1081     owindow *current;
1082     TAILQ_FOREACH(current, &owindows, owindows) {
1083         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1084         result &= con_move_to_mark(current->con, mark);
1085     }
1086
1087     cmd_output->needs_tree_render = true;
1088     ysuccess(result);
1089 }
1090
1091 /*
1092  * Implementation of 'floating enable|disable|toggle'
1093  *
1094  */
1095 void cmd_floating(I3_CMD, const char *floating_mode) {
1096     owindow *current;
1097
1098     DLOG("floating_mode=%s\n", floating_mode);
1099
1100     HANDLE_EMPTY_MATCH;
1101
1102     TAILQ_FOREACH(current, &owindows, owindows) {
1103         DLOG("matching: %p / %s\n", current->con, current->con->name);
1104         if (strcmp(floating_mode, "toggle") == 0) {
1105             DLOG("should toggle mode\n");
1106             toggle_floating_mode(current->con, false);
1107         } else {
1108             DLOG("should switch mode to %s\n", floating_mode);
1109             if (strcmp(floating_mode, "enable") == 0) {
1110                 floating_enable(current->con, false);
1111             } else {
1112                 floating_disable(current->con, false);
1113             }
1114         }
1115     }
1116
1117     cmd_output->needs_tree_render = true;
1118     // XXX: default reply for now, make this a better reply
1119     ysuccess(true);
1120 }
1121
1122 /*
1123  * Implementation of 'move workspace to [output] <str>'.
1124  *
1125  */
1126 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1127     DLOG("should move workspace to output %s\n", name);
1128
1129     HANDLE_EMPTY_MATCH;
1130
1131     owindow *current;
1132     TAILQ_FOREACH(current, &owindows, owindows) {
1133         Con *ws = con_get_workspace(current->con);
1134         if (con_is_internal(ws)) {
1135             continue;
1136         }
1137
1138         Output *current_output = get_output_for_con(ws);
1139         if (current_output == NULL) {
1140             ELOG("Cannot get current output. This is a bug in i3.\n");
1141             ysuccess(false);
1142             return;
1143         }
1144
1145         Output *target_output = get_output_from_string(current_output, name);
1146         if (!target_output) {
1147             ELOG("Could not get output from string \"%s\"\n", name);
1148             ysuccess(false);
1149             return;
1150         }
1151
1152         bool success = workspace_move_to_output(ws, target_output);
1153         if (!success) {
1154             ELOG("Failed to move workspace to output.\n");
1155             ysuccess(false);
1156             return;
1157         }
1158     }
1159
1160     cmd_output->needs_tree_render = true;
1161     // XXX: default reply for now, make this a better reply
1162     ysuccess(true);
1163 }
1164
1165 /*
1166  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1167  *
1168  */
1169 void cmd_split(I3_CMD, const char *direction) {
1170     HANDLE_EMPTY_MATCH;
1171
1172     owindow *current;
1173     LOG("splitting in direction %c\n", direction[0]);
1174     TAILQ_FOREACH(current, &owindows, owindows) {
1175         if (con_is_docked(current->con)) {
1176             ELOG("Cannot split a docked container, skipping.\n");
1177             continue;
1178         }
1179
1180         DLOG("matching: %p / %s\n", current->con, current->con->name);
1181         if (direction[0] == 't') {
1182             layout_t current_layout;
1183             if (current->con->type == CT_WORKSPACE) {
1184                 current_layout = current->con->layout;
1185             } else {
1186                 current_layout = current->con->parent->layout;
1187             }
1188             /* toggling split orientation */
1189             if (current_layout == L_SPLITH) {
1190                 tree_split(current->con, VERT);
1191             } else {
1192                 tree_split(current->con, HORIZ);
1193             }
1194         } else {
1195             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1196         }
1197     }
1198
1199     cmd_output->needs_tree_render = true;
1200     // XXX: default reply for now, make this a better reply
1201     ysuccess(true);
1202 }
1203
1204 /*
1205  * Implementation of 'kill [window|client]'.
1206  *
1207  */
1208 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1209     if (kill_mode_str == NULL)
1210         kill_mode_str = "window";
1211
1212     DLOG("kill_mode=%s\n", kill_mode_str);
1213
1214     int kill_mode;
1215     if (strcmp(kill_mode_str, "window") == 0)
1216         kill_mode = KILL_WINDOW;
1217     else if (strcmp(kill_mode_str, "client") == 0)
1218         kill_mode = KILL_CLIENT;
1219     else {
1220         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1221         ysuccess(false);
1222         return;
1223     }
1224
1225     HANDLE_EMPTY_MATCH;
1226
1227     owindow *current;
1228     TAILQ_FOREACH(current, &owindows, owindows) {
1229         con_close(current->con, kill_mode);
1230     }
1231
1232     cmd_output->needs_tree_render = true;
1233     // XXX: default reply for now, make this a better reply
1234     ysuccess(true);
1235 }
1236
1237 /*
1238  * Implementation of 'exec [--no-startup-id] <command>'.
1239  *
1240  */
1241 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1242     bool no_startup_id = (nosn != NULL);
1243
1244     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1245     start_application(command, no_startup_id);
1246
1247     // XXX: default reply for now, make this a better reply
1248     ysuccess(true);
1249 }
1250
1251 /*
1252  * Implementation of 'focus left|right|up|down'.
1253  *
1254  */
1255 void cmd_focus_direction(I3_CMD, const char *direction) {
1256     switch (parse_direction(direction)) {
1257         case D_LEFT:
1258             tree_next('p', HORIZ);
1259             break;
1260         case D_RIGHT:
1261             tree_next('n', HORIZ);
1262             break;
1263         case D_UP:
1264             tree_next('p', VERT);
1265             break;
1266         case D_DOWN:
1267             tree_next('n', VERT);
1268             break;
1269     }
1270
1271     cmd_output->needs_tree_render = true;
1272     // XXX: default reply for now, make this a better reply
1273     ysuccess(true);
1274 }
1275
1276 /*
1277  * Focus a container and disable any other fullscreen container not permitting the focus.
1278  *
1279  */
1280 static void cmd_focus_force_focus(Con *con) {
1281     /* Disable fullscreen container in workspace with container to be focused. */
1282     Con *ws = con_get_workspace(con);
1283     Con *fullscreen_on_ws = (focused && focused->fullscreen_mode == CF_GLOBAL) ? focused : con_get_fullscreen_con(ws, CF_OUTPUT);
1284     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1285         con_disable_fullscreen(fullscreen_on_ws);
1286     }
1287     con_activate(con);
1288 }
1289
1290 /*
1291  * Implementation of 'focus tiling|floating|mode_toggle'.
1292  *
1293  */
1294 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1295     DLOG("window_mode = %s\n", window_mode);
1296
1297     bool to_floating = false;
1298     if (strcmp(window_mode, "mode_toggle") == 0) {
1299         to_floating = !con_inside_floating(focused);
1300     } else if (strcmp(window_mode, "floating") == 0) {
1301         to_floating = true;
1302     } else if (strcmp(window_mode, "tiling") == 0) {
1303         to_floating = false;
1304     }
1305
1306     Con *ws = con_get_workspace(focused);
1307     Con *current;
1308     bool success = false;
1309     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1310         if ((to_floating && current->type != CT_FLOATING_CON) ||
1311             (!to_floating && current->type == CT_FLOATING_CON))
1312             continue;
1313
1314         cmd_focus_force_focus(con_descend_focused(current));
1315         success = true;
1316         break;
1317     }
1318
1319     if (success) {
1320         cmd_output->needs_tree_render = true;
1321         ysuccess(true);
1322     } else {
1323         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1324     }
1325 }
1326
1327 /*
1328  * Implementation of 'focus parent|child'.
1329  *
1330  */
1331 void cmd_focus_level(I3_CMD, const char *level) {
1332     DLOG("level = %s\n", level);
1333     bool success = false;
1334
1335     /* Focusing the parent can only be allowed if the newly
1336      * focused container won't escape the fullscreen container. */
1337     if (strcmp(level, "parent") == 0) {
1338         if (focused && focused->parent) {
1339             if (con_fullscreen_permits_focusing(focused->parent))
1340                 success = level_up();
1341             else
1342                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1343         }
1344     }
1345
1346     /* Focusing a child should always be allowed. */
1347     else
1348         success = level_down();
1349
1350     cmd_output->needs_tree_render = success;
1351     // XXX: default reply for now, make this a better reply
1352     ysuccess(success);
1353 }
1354
1355 /*
1356  * Implementation of 'focus'.
1357  *
1358  */
1359 void cmd_focus(I3_CMD) {
1360     DLOG("current_match = %p\n", current_match);
1361
1362     if (match_is_empty(current_match)) {
1363         ELOG("You have to specify which window/container should be focused.\n");
1364         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1365
1366         yerror("You have to specify which window/container should be focused");
1367
1368         return;
1369     }
1370
1371     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1372     int count = 0;
1373     owindow *current;
1374     TAILQ_FOREACH(current, &owindows, owindows) {
1375         Con *ws = con_get_workspace(current->con);
1376         /* If no workspace could be found, this was a dock window.
1377          * Just skip it, you cannot focus dock windows. */
1378         if (!ws)
1379             continue;
1380
1381         /* In case this is a scratchpad window, call scratchpad_show(). */
1382         if (ws == __i3_scratch) {
1383             scratchpad_show(current->con);
1384             count++;
1385             /* While for the normal focus case we can change focus multiple
1386              * times and only a single window ends up focused, we could show
1387              * multiple scratchpad windows. So, rather break here. */
1388             break;
1389         }
1390
1391         /* If the container is not on the current workspace,
1392          * workspace_show() will switch to a different workspace and (if
1393          * enabled) trigger a mouse pointer warp to the currently focused
1394          * container (!) on the target workspace.
1395          *
1396          * Therefore, before calling workspace_show(), we make sure that
1397          * 'current' will be focused on the workspace. However, we cannot
1398          * just con_focus(current) because then the pointer will not be
1399          * warped at all (the code thinks we are already there).
1400          *
1401          * So we focus 'current' to make it the currently focused window of
1402          * the target workspace, then revert focus. */
1403         Con *currently_focused = focused;
1404         cmd_focus_force_focus(current->con);
1405         con_activate(currently_focused);
1406
1407         /* Now switch to the workspace, then focus */
1408         workspace_show(ws);
1409         LOG("focusing %p / %s\n", current->con, current->con->name);
1410         con_activate(current->con);
1411         count++;
1412     }
1413
1414     if (count > 1)
1415         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1416             "while only exactly one container can be focused at a time.\n",
1417             count);
1418
1419     cmd_output->needs_tree_render = true;
1420     ysuccess(count > 0);
1421 }
1422
1423 /*
1424  * Implementation of 'fullscreen enable|toggle [global]' and
1425  *                   'fullscreen disable'
1426  *
1427  */
1428 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1429     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1430     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1431     owindow *current;
1432
1433     HANDLE_EMPTY_MATCH;
1434
1435     TAILQ_FOREACH(current, &owindows, owindows) {
1436         DLOG("matching: %p / %s\n", current->con, current->con->name);
1437         if (strcmp(action, "toggle") == 0) {
1438             con_toggle_fullscreen(current->con, mode);
1439         } else if (strcmp(action, "enable") == 0) {
1440             con_enable_fullscreen(current->con, mode);
1441         } else if (strcmp(action, "disable") == 0) {
1442             con_disable_fullscreen(current->con);
1443         }
1444     }
1445
1446     cmd_output->needs_tree_render = true;
1447     // XXX: default reply for now, make this a better reply
1448     ysuccess(true);
1449 }
1450
1451 /*
1452  * Implementation of 'sticky enable|disable|toggle'.
1453  *
1454  */
1455 void cmd_sticky(I3_CMD, const char *action) {
1456     DLOG("%s sticky on window\n", action);
1457     HANDLE_EMPTY_MATCH;
1458
1459     owindow *current;
1460     TAILQ_FOREACH(current, &owindows, owindows) {
1461         if (current->con->window == NULL) {
1462             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1463             continue;
1464         }
1465         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1466
1467         bool sticky = false;
1468         if (strcmp(action, "enable") == 0)
1469             sticky = true;
1470         else if (strcmp(action, "disable") == 0)
1471             sticky = false;
1472         else if (strcmp(action, "toggle") == 0)
1473             sticky = !current->con->sticky;
1474
1475         current->con->sticky = sticky;
1476         ewmh_update_sticky(current->con->window->id, sticky);
1477     }
1478
1479     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1480      * sure it gets pushed to the front now. */
1481     output_push_sticky_windows(focused);
1482
1483     ewmh_update_wm_desktop();
1484
1485     cmd_output->needs_tree_render = true;
1486     ysuccess(true);
1487 }
1488
1489 /*
1490  * Implementation of 'move <direction> [<pixels> [px]]'.
1491  *
1492  */
1493 void cmd_move_direction(I3_CMD, const char *direction_str, long move_px) {
1494     owindow *current;
1495     HANDLE_EMPTY_MATCH;
1496
1497     Con *initially_focused = focused;
1498     direction_t direction = parse_direction(direction_str);
1499
1500     TAILQ_FOREACH(current, &owindows, owindows) {
1501         DLOG("moving in direction %s, px %ld\n", direction_str, move_px);
1502         if (con_is_floating(current->con)) {
1503             DLOG("floating move with %ld pixels\n", move_px);
1504             Rect newrect = current->con->parent->rect;
1505
1506             switch (direction) {
1507                 case D_LEFT:
1508                     newrect.x -= move_px;
1509                     break;
1510                 case D_RIGHT:
1511                     newrect.x += move_px;
1512                     break;
1513                 case D_UP:
1514                     newrect.y -= move_px;
1515                     break;
1516                 case D_DOWN:
1517                     newrect.y += move_px;
1518                     break;
1519             }
1520
1521             floating_reposition(current->con->parent, newrect);
1522         } else {
1523             tree_move(current->con, direction);
1524             cmd_output->needs_tree_render = true;
1525         }
1526     }
1527
1528     /* the move command should not disturb focus */
1529     if (focused != initially_focused)
1530         con_activate(initially_focused);
1531
1532     // XXX: default reply for now, make this a better reply
1533     ysuccess(true);
1534 }
1535
1536 /*
1537  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1538  *
1539  */
1540 void cmd_layout(I3_CMD, const char *layout_str) {
1541     HANDLE_EMPTY_MATCH;
1542
1543     layout_t layout;
1544     if (!layout_from_name(layout_str, &layout)) {
1545         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1546         return;
1547     }
1548
1549     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1550
1551     owindow *current;
1552     TAILQ_FOREACH(current, &owindows, owindows) {
1553         if (con_is_docked(current->con)) {
1554             ELOG("cannot change layout of a docked container, skipping it.\n");
1555             continue;
1556         }
1557
1558         DLOG("matching: %p / %s\n", current->con, current->con->name);
1559         con_set_layout(current->con, layout);
1560     }
1561
1562     cmd_output->needs_tree_render = true;
1563     // XXX: default reply for now, make this a better reply
1564     ysuccess(true);
1565 }
1566
1567 /*
1568  * Implementation of 'layout toggle [all|split]'.
1569  *
1570  */
1571 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1572     owindow *current;
1573
1574     if (toggle_mode == NULL)
1575         toggle_mode = "default";
1576
1577     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1578
1579     /* check if the match is empty, not if the result is empty */
1580     if (match_is_empty(current_match))
1581         con_toggle_layout(focused, toggle_mode);
1582     else {
1583         TAILQ_FOREACH(current, &owindows, owindows) {
1584             DLOG("matching: %p / %s\n", current->con, current->con->name);
1585             con_toggle_layout(current->con, toggle_mode);
1586         }
1587     }
1588
1589     cmd_output->needs_tree_render = true;
1590     // XXX: default reply for now, make this a better reply
1591     ysuccess(true);
1592 }
1593
1594 /*
1595  * Implementation of 'exit'.
1596  *
1597  */
1598 void cmd_exit(I3_CMD) {
1599     LOG("Exiting due to user command.\n");
1600 #ifdef I3_ASAN_ENABLED
1601     __lsan_do_leak_check();
1602 #endif
1603     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1604     unlink(config.ipc_socket_path);
1605     xcb_disconnect(conn);
1606     exit(0);
1607
1608     /* unreached */
1609 }
1610
1611 /*
1612  * Implementation of 'reload'.
1613  *
1614  */
1615 void cmd_reload(I3_CMD) {
1616     LOG("reloading\n");
1617     kill_nagbar(&config_error_nagbar_pid, false);
1618     kill_nagbar(&command_error_nagbar_pid, false);
1619     load_configuration(conn, NULL, true);
1620     x_set_i3_atoms();
1621     /* Send an IPC event just in case the ws names have changed */
1622     ipc_send_workspace_event("reload", NULL, NULL);
1623     /* Send an update event for the barconfig just in case it has changed */
1624     update_barconfig();
1625
1626     // XXX: default reply for now, make this a better reply
1627     ysuccess(true);
1628 }
1629
1630 /*
1631  * Implementation of 'restart'.
1632  *
1633  */
1634 void cmd_restart(I3_CMD) {
1635     LOG("restarting i3\n");
1636     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1637     unlink(config.ipc_socket_path);
1638     /* We need to call this manually since atexit handlers don’t get called
1639      * when exec()ing */
1640     purge_zerobyte_logfile();
1641     i3_restart(false);
1642
1643     // XXX: default reply for now, make this a better reply
1644     ysuccess(true);
1645 }
1646
1647 /*
1648  * Implementation of 'open'.
1649  *
1650  */
1651 void cmd_open(I3_CMD) {
1652     LOG("opening new container\n");
1653     Con *con = tree_open_con(NULL, NULL);
1654     con->layout = L_SPLITH;
1655     con_activate(con);
1656
1657     y(map_open);
1658     ystr("success");
1659     y(bool, true);
1660     ystr("id");
1661     y(integer, (uintptr_t)con);
1662     y(map_close);
1663
1664     cmd_output->needs_tree_render = true;
1665 }
1666
1667 /*
1668  * Implementation of 'focus output <output>'.
1669  *
1670  */
1671 void cmd_focus_output(I3_CMD, const char *name) {
1672     owindow *current;
1673
1674     DLOG("name = %s\n", name);
1675
1676     HANDLE_EMPTY_MATCH;
1677
1678     /* get the output */
1679     Output *current_output = NULL;
1680     Output *output;
1681
1682     TAILQ_FOREACH(current, &owindows, owindows)
1683     current_output = get_output_for_con(current->con);
1684     assert(current_output != NULL);
1685
1686     output = get_output_from_string(current_output, name);
1687
1688     if (!output) {
1689         LOG("No such output found.\n");
1690         ysuccess(false);
1691         return;
1692     }
1693
1694     /* get visible workspace on output */
1695     Con *ws = NULL;
1696     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1697     if (!ws) {
1698         ysuccess(false);
1699         return;
1700     }
1701
1702     workspace_show(ws);
1703
1704     cmd_output->needs_tree_render = true;
1705     // XXX: default reply for now, make this a better reply
1706     ysuccess(true);
1707 }
1708
1709 /*
1710  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1711  *
1712  */
1713 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1714     bool has_error = false;
1715
1716     owindow *current;
1717     HANDLE_EMPTY_MATCH;
1718
1719     TAILQ_FOREACH(current, &owindows, owindows) {
1720         if (!con_is_floating(current->con)) {
1721             ELOG("Cannot change position. The window/container is not floating\n");
1722
1723             if (!has_error) {
1724                 yerror("Cannot change position of a window/container because it is not floating.");
1725                 has_error = true;
1726             }
1727
1728             continue;
1729         }
1730
1731         Rect newrect = current->con->parent->rect;
1732
1733         DLOG("moving to position %ld %ld\n", x, y);
1734         newrect.x = x;
1735         newrect.y = y;
1736
1737         if (!floating_reposition(current->con->parent, newrect)) {
1738             yerror("Cannot move window/container out of bounds.");
1739             has_error = true;
1740         }
1741     }
1742
1743     if (!has_error)
1744         ysuccess(true);
1745 }
1746
1747 /*
1748  * Implementation of 'move [window|container] [to] [absolute] position center
1749  *
1750  */
1751 void cmd_move_window_to_center(I3_CMD, const char *method) {
1752     bool has_error = false;
1753     HANDLE_EMPTY_MATCH;
1754
1755     owindow *current;
1756     TAILQ_FOREACH(current, &owindows, owindows) {
1757         Con *floating_con = con_inside_floating(current->con);
1758         if (floating_con == NULL) {
1759             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1760                  current->con, current->con->name);
1761
1762             if (!has_error) {
1763                 yerror("Cannot change position of a window/container because it is not floating.");
1764                 has_error = true;
1765             }
1766
1767             continue;
1768         }
1769
1770         if (strcmp(method, "absolute") == 0) {
1771             DLOG("moving to absolute center\n");
1772             floating_center(floating_con, croot->rect);
1773
1774             floating_maybe_reassign_ws(floating_con);
1775             cmd_output->needs_tree_render = true;
1776         }
1777
1778         if (strcmp(method, "position") == 0) {
1779             DLOG("moving to center\n");
1780             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1781
1782             cmd_output->needs_tree_render = true;
1783         }
1784     }
1785
1786     // XXX: default reply for now, make this a better reply
1787     if (!has_error)
1788         ysuccess(true);
1789 }
1790
1791 /*
1792  * Implementation of 'move [window|container] [to] position mouse'
1793  *
1794  */
1795 void cmd_move_window_to_mouse(I3_CMD) {
1796     HANDLE_EMPTY_MATCH;
1797
1798     owindow *current;
1799     TAILQ_FOREACH(current, &owindows, owindows) {
1800         Con *floating_con = con_inside_floating(current->con);
1801         if (floating_con == NULL) {
1802             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1803                  current->con, current->con->name);
1804             continue;
1805         }
1806
1807         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1808         floating_move_to_pointer(floating_con);
1809     }
1810
1811     cmd_output->needs_tree_render = true;
1812     ysuccess(true);
1813 }
1814
1815 /*
1816  * Implementation of 'move scratchpad'.
1817  *
1818  */
1819 void cmd_move_scratchpad(I3_CMD) {
1820     DLOG("should move window to scratchpad\n");
1821     owindow *current;
1822
1823     HANDLE_EMPTY_MATCH;
1824
1825     TAILQ_FOREACH(current, &owindows, owindows) {
1826         DLOG("matching: %p / %s\n", current->con, current->con->name);
1827         scratchpad_move(current->con);
1828     }
1829
1830     cmd_output->needs_tree_render = true;
1831     // XXX: default reply for now, make this a better reply
1832     ysuccess(true);
1833 }
1834
1835 /*
1836  * Implementation of 'scratchpad show'.
1837  *
1838  */
1839 void cmd_scratchpad_show(I3_CMD) {
1840     DLOG("should show scratchpad window\n");
1841     owindow *current;
1842     bool result = false;
1843
1844     if (match_is_empty(current_match)) {
1845         result = scratchpad_show(NULL);
1846     } else {
1847         TAILQ_FOREACH(current, &owindows, owindows) {
1848             DLOG("matching: %p / %s\n", current->con, current->con->name);
1849             result |= scratchpad_show(current->con);
1850         }
1851     }
1852
1853     cmd_output->needs_tree_render = true;
1854
1855     ysuccess(result);
1856 }
1857
1858 /*
1859  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1860  *
1861  */
1862 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1863     HANDLE_EMPTY_MATCH;
1864
1865     owindow *match = TAILQ_FIRST(&owindows);
1866     if (match == NULL) {
1867         DLOG("No match found for swapping.\n");
1868         return;
1869     }
1870
1871     Con *con;
1872     if (strcmp(mode, "id") == 0) {
1873         long target;
1874         if (!parse_long(arg, &target, 0)) {
1875             yerror("Failed to parse %s into a window id.\n", arg);
1876             return;
1877         }
1878
1879         con = con_by_window_id(target);
1880     } else if (strcmp(mode, "con_id") == 0) {
1881         long target;
1882         if (!parse_long(arg, &target, 0)) {
1883             yerror("Failed to parse %s into a container id.\n", arg);
1884             return;
1885         }
1886
1887         con = con_by_con_id(target);
1888     } else if (strcmp(mode, "mark") == 0) {
1889         con = con_by_mark(arg);
1890     } else {
1891         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1892         return;
1893     }
1894
1895     if (con == NULL) {
1896         yerror("Could not find container for %s = %s\n", mode, arg);
1897         return;
1898     }
1899
1900     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1901         DLOG("More than one container matched the swap command, only using the first one.");
1902     }
1903
1904     if (match->con == NULL) {
1905         DLOG("Match %p has no container.\n", match);
1906         ysuccess(false);
1907         return;
1908     }
1909
1910     DLOG("Swapping %p with %p.\n", match->con, con);
1911     bool result = con_swap(match->con, con);
1912
1913     cmd_output->needs_tree_render = true;
1914     ysuccess(result);
1915 }
1916
1917 /*
1918  * Implementation of 'title_format <format>'
1919  *
1920  */
1921 void cmd_title_format(I3_CMD, const char *format) {
1922     DLOG("setting title_format to \"%s\"\n", format);
1923     HANDLE_EMPTY_MATCH;
1924
1925     owindow *current;
1926     TAILQ_FOREACH(current, &owindows, owindows) {
1927         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1928         FREE(current->con->title_format);
1929
1930         /* If we only display the title without anything else, we can skip the parsing step,
1931          * so we remove the title format altogether. */
1932         if (strcasecmp(format, "%title") != 0) {
1933             current->con->title_format = sstrdup(format);
1934
1935             if (current->con->window != NULL) {
1936                 i3String *formatted_title = con_parse_title_format(current->con);
1937                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1938                 I3STRING_FREE(formatted_title);
1939             }
1940         } else {
1941             if (current->con->window != NULL) {
1942                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1943                 ewmh_update_visible_name(current->con->window->id, NULL);
1944             }
1945         }
1946
1947         if (current->con->window != NULL) {
1948             /* Make sure the window title is redrawn immediately. */
1949             current->con->window->name_x_changed = true;
1950         } else {
1951             /* For windowless containers we also need to force the redrawing. */
1952             FREE(current->con->deco_render_params);
1953         }
1954     }
1955
1956     cmd_output->needs_tree_render = true;
1957     ysuccess(true);
1958 }
1959
1960 /*
1961  * Implementation of 'rename workspace [<name>] to <name>'
1962  *
1963  */
1964 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1965     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1966         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1967         ysuccess(false);
1968         return;
1969     }
1970     if (old_name) {
1971         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1972     } else {
1973         LOG("Renaming current workspace to \"%s\"\n", new_name);
1974     }
1975
1976     Con *workspace;
1977     if (old_name) {
1978         workspace = get_existing_workspace_by_name(old_name);
1979     } else {
1980         workspace = con_get_workspace(focused);
1981         old_name = workspace->name;
1982     }
1983
1984     if (!workspace) {
1985         yerror("Old workspace \"%s\" not found", old_name);
1986         return;
1987     }
1988
1989     Con *check_dest = get_existing_workspace_by_name(new_name);
1990
1991     /* If check_dest == workspace, the user might be changing the case of the
1992      * workspace, or it might just be a no-op. */
1993     if (check_dest != NULL && check_dest != workspace) {
1994         yerror("New workspace \"%s\" already exists", new_name);
1995         return;
1996     }
1997
1998     /* Change the name and try to parse it as a number. */
1999     /* old_name might refer to workspace->name, so copy it before free()ing */
2000     char *old_name_copy = sstrdup(old_name);
2001     FREE(workspace->name);
2002     workspace->name = sstrdup(new_name);
2003
2004     workspace->num = ws_name_to_number(new_name);
2005     LOG("num = %d\n", workspace->num);
2006
2007     /* By re-attaching, the sort order will be correct afterwards. */
2008     Con *previously_focused = focused;
2009     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
2010     Con *parent = workspace->parent;
2011     con_detach(workspace);
2012     con_attach(workspace, parent, false);
2013
2014     /* Move the workspace to the correct output if it has an assignment */
2015     struct Workspace_Assignment *assignment = NULL;
2016     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
2017         if (assignment->output == NULL)
2018             continue;
2019         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
2020             continue;
2021         }
2022
2023         Output *target_output = get_output_by_name(assignment->output, true);
2024         if (!target_output) {
2025             LOG("Could not get output named \"%s\"\n", assignment->output);
2026             continue;
2027         }
2028         if (!output_triggers_assignment(target_output, assignment)) {
2029             continue;
2030         }
2031         workspace_move_to_output(workspace, target_output);
2032
2033         break;
2034     }
2035
2036     bool can_restore_focus = previously_focused != NULL;
2037     /* NB: If previously_focused is a workspace we can't work directly with it
2038      * since it might have been cleaned up by workspace_show() already,
2039      * depending on the focus order/number of other workspaces on the output.
2040      * Instead, we loop through the available workspaces and only focus
2041      * previously_focused if we still find it. */
2042     if (previously_focused_content) {
2043         Con *workspace = NULL;
2044         GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2045         can_restore_focus &= (workspace != NULL);
2046     }
2047
2048     if (can_restore_focus) {
2049         /* Restore the previous focus since con_attach messes with the focus. */
2050         workspace_show(con_get_workspace(previously_focused));
2051         con_focus(previously_focused);
2052     }
2053
2054     cmd_output->needs_tree_render = true;
2055     ysuccess(true);
2056
2057     ipc_send_workspace_event("rename", workspace, NULL);
2058     ewmh_update_desktop_names();
2059     ewmh_update_desktop_viewport();
2060     ewmh_update_current_desktop();
2061
2062     startup_sequence_rename_workspace(old_name_copy, new_name);
2063     free(old_name_copy);
2064 }
2065
2066 /*
2067  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2068  *
2069  */
2070 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2071     int mode = M_DOCK;
2072     bool toggle = false;
2073     if (strcmp(bar_mode, "dock") == 0)
2074         mode = M_DOCK;
2075     else if (strcmp(bar_mode, "hide") == 0)
2076         mode = M_HIDE;
2077     else if (strcmp(bar_mode, "invisible") == 0)
2078         mode = M_INVISIBLE;
2079     else if (strcmp(bar_mode, "toggle") == 0)
2080         toggle = true;
2081     else {
2082         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2083         return false;
2084     }
2085
2086     bool changed_sth = false;
2087     Barconfig *current = NULL;
2088     TAILQ_FOREACH(current, &barconfigs, configs) {
2089         if (bar_id && strcmp(current->id, bar_id) != 0)
2090             continue;
2091
2092         if (toggle)
2093             mode = (current->mode + 1) % 2;
2094
2095         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2096         current->mode = mode;
2097         changed_sth = true;
2098
2099         if (bar_id)
2100             break;
2101     }
2102
2103     if (bar_id && !changed_sth) {
2104         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2105         return false;
2106     }
2107
2108     return true;
2109 }
2110
2111 /*
2112  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2113  *
2114  */
2115 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2116     int hidden_state = S_SHOW;
2117     bool toggle = false;
2118     if (strcmp(bar_hidden_state, "hide") == 0)
2119         hidden_state = S_HIDE;
2120     else if (strcmp(bar_hidden_state, "show") == 0)
2121         hidden_state = S_SHOW;
2122     else if (strcmp(bar_hidden_state, "toggle") == 0)
2123         toggle = true;
2124     else {
2125         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2126         return false;
2127     }
2128
2129     bool changed_sth = false;
2130     Barconfig *current = NULL;
2131     TAILQ_FOREACH(current, &barconfigs, configs) {
2132         if (bar_id && strcmp(current->id, bar_id) != 0)
2133             continue;
2134
2135         if (toggle)
2136             hidden_state = (current->hidden_state + 1) % 2;
2137
2138         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2139         current->hidden_state = hidden_state;
2140         changed_sth = true;
2141
2142         if (bar_id)
2143             break;
2144     }
2145
2146     if (bar_id && !changed_sth) {
2147         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2148         return false;
2149     }
2150
2151     return true;
2152 }
2153
2154 /*
2155  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2156  *
2157  */
2158 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2159     bool ret;
2160     if (strcmp(bar_type, "mode") == 0)
2161         ret = cmd_bar_mode(bar_value, bar_id);
2162     else if (strcmp(bar_type, "hidden_state") == 0)
2163         ret = cmd_bar_hidden_state(bar_value, bar_id);
2164     else {
2165         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2166         ret = false;
2167     }
2168
2169     ysuccess(ret);
2170     if (!ret)
2171         return;
2172
2173     update_barconfig();
2174 }
2175
2176 /*
2177  * Implementation of 'shmlog <size>|toggle|on|off'
2178  *
2179  */
2180 void cmd_shmlog(I3_CMD, const char *argument) {
2181     if (!strcmp(argument, "toggle"))
2182         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2183         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2184     else if (!strcmp(argument, "on"))
2185         shmlog_size = default_shmlog_size;
2186     else if (!strcmp(argument, "off"))
2187         shmlog_size = 0;
2188     else {
2189         long new_size = 0;
2190         if (!parse_long(argument, &new_size, 0)) {
2191             yerror("Failed to parse %s into a shmlog size.\n", argument);
2192             return;
2193         }
2194         /* If shm logging now, restart logging with the new size. */
2195         if (shmlog_size > 0) {
2196             shmlog_size = 0;
2197             LOG("Restarting shm logging...\n");
2198             init_logging();
2199         }
2200         shmlog_size = (int)new_size;
2201     }
2202     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2203     init_logging();
2204     update_shmlog_atom();
2205     ysuccess(true);
2206 }
2207
2208 /*
2209  * Implementation of 'debuglog toggle|on|off'
2210  *
2211  */
2212 void cmd_debuglog(I3_CMD, const char *argument) {
2213     bool logging = get_debug_logging();
2214     if (!strcmp(argument, "toggle")) {
2215         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2216         set_debug_logging(!logging);
2217     } else if (!strcmp(argument, "on") && !logging) {
2218         LOG("Enabling debug logging\n");
2219         set_debug_logging(true);
2220     } else if (!strcmp(argument, "off") && logging) {
2221         LOG("Disabling debug logging\n");
2222         set_debug_logging(false);
2223     }
2224     // XXX: default reply for now, make this a better reply
2225     ysuccess(true);
2226 }