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  * Returns true if a is definitely greater than b (using the given epsilon)
  83  *
  84  */
  85 static bool definitelyGreaterThan(float a, float b, float epsilon) {
  86     return (a - b) > ((fabs(a) < fabs(b) ? fabs(b) : fabs(a)) * epsilon);
  87 }
  88
  89 /*
  90  * Checks whether we switched to a new workspace and returns false in that case,
  91  * signaling that further workspace switching should be done by the calling function
  92  * If not, calls workspace_back_and_forth() if workspace_auto_back_and_forth is set
  93  * and return true, signaling that no further workspace switching should occur in the calling function.
  94  *
  95  */
  96 static bool maybe_back_and_forth(struct CommandResultIR *cmd_output, const char *name) {
  97     Con *ws = con_get_workspace(focused);
  98
  99     /* If we switched to a different workspace, do nothing */
 100     if (strcmp(ws->name, name) != 0)
 101         return false;
 102
 103     DLOG("This workspace is already focused.\n");
 104     if (config.workspace_auto_back_and_forth) {
 105         workspace_back_and_forth();
 106         cmd_output->needs_tree_render = true;
 107     }
 108     return true;
 109 }
 110
 111 /*
 112  * Return the passed workspace unless it is the current one and auto back and
 113  * forth is enabled, in which case the back_and_forth workspace is returned.
 114  */
 115 static Con *maybe_auto_back_and_forth_workspace(Con *workspace) {
 116     Con *current, *baf;
 117
 118     if (!config.workspace_auto_back_and_forth)
 119         return workspace;
 120
 121     current = con_get_workspace(focused);
 122
 123     if (current == workspace) {
 124         baf = workspace_back_and_forth_get();
 125         if (baf != NULL) {
 126             DLOG("Substituting workspace with back_and_forth, as it is focused.\n");
 127             return baf;
 128         }
 129     }
 130
 131     return workspace;
 132 }
 133
 134 /*******************************************************************************
 135  * Criteria functions.
 136  ******************************************************************************/
 137
 138 /*
 139  * Helper data structure for an operation window (window on which the operation
 140  * will be performed). Used to build the TAILQ owindows.
 141  *
 142  */
 143 typedef struct owindow {
 144     Con *con;
 145
 146     TAILQ_ENTRY(owindow)
 147     owindows;
 148 } owindow;
 149
 150 typedef TAILQ_HEAD(owindows_head, owindow) owindows_head;
 151
 152 static owindows_head owindows;
 153
 154 /*
 155  * Initializes the specified 'Match' data structure and the initial state of
 156  * commands.c for matching target windows of a command.
 157  *
 158  */
 159 void cmd_criteria_init(I3_CMD) {
 160     Con *con;
 161     owindow *ow;
 162
 163     DLOG("Initializing criteria, current_match = %p\n", current_match);
 164     match_free(current_match);
 165     match_init(current_match);
 166     while (!TAILQ_EMPTY(&owindows)) {
 167         ow = TAILQ_FIRST(&owindows);
 168         TAILQ_REMOVE(&owindows, ow, owindows);
 169         free(ow);
 170     }
 171     TAILQ_INIT(&owindows);
 172     /* copy all_cons */
 173     TAILQ_FOREACH(con, &all_cons, all_cons) {
 174         ow = smalloc(sizeof(owindow));
 175         ow->con = con;
 176         TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 177     }
 178 }
 179
 180 /*
 181  * A match specification just finished (the closing square bracket was found),
 182  * so we filter the list of owindows.
 183  *
 184  */
 185 void cmd_criteria_match_windows(I3_CMD) {
 186     owindow *next, *current;
 187
 188     DLOG("match specification finished, matching...\n");
 189     /* copy the old list head to iterate through it and start with a fresh
 190      * list which will contain only matching windows */
 191     struct owindows_head old = owindows;
 192     TAILQ_INIT(&owindows);
 193     for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 194         /* make a copy of the next pointer and advance the pointer to the
 195          * next element as we are going to invalidate the element’s
 196          * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 197         current = next;
 198         next = TAILQ_NEXT(next, owindows);
 199
 200         DLOG("checking if con %p / %s matches\n", current->con, current->con->name);
 201
 202         /* We use this flag to prevent matching on window-less containers if
 203          * only window-specific criteria were specified. */
 204         bool accept_match = false;
 205
 206         if (current_match->con_id != NULL) {
 207             accept_match = true;
 208
 209             if (current_match->con_id == current->con) {
 210                 DLOG("con_id matched.\n");
 211             } else {
 212                 DLOG("con_id does not match.\n");
 213                 FREE(current);
 214                 continue;
 215             }
 216         }
 217
 218         if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
 219             accept_match = true;
 220             bool matched_by_mark = false;
 221
 222             mark_t *mark;
 223             TAILQ_FOREACH(mark, &(current->con->marks_head), marks) {
 224                 if (!regex_matches(current_match->mark, mark->name))
 225                     continue;
 226
 227                 DLOG("match by mark\n");
 228                 matched_by_mark = true;
 229                 break;
 230             }
 231
 232             if (!matched_by_mark) {
 233                 DLOG("mark does not match.\n");
 234                 FREE(current);
 235                 continue;
 236             }
 237         }
 238
 239         if (current->con->window != NULL) {
 240             if (match_matches_window(current_match, current->con->window)) {
 241                 DLOG("matches window!\n");
 242                 accept_match = true;
 243             } else {
 244                 DLOG("doesn't match\n");
 245                 FREE(current);
 246                 continue;
 247             }
 248         }
 249
 250         if (accept_match) {
 251             TAILQ_INSERT_TAIL(&owindows, current, owindows);
 252         } else {
 253             FREE(current);
 254             continue;
 255         }
 256     }
 257
 258     TAILQ_FOREACH(current, &owindows, owindows) {
 259         DLOG("matching: %p / %s\n", current->con, current->con->name);
 260     }
 261 }
 262
 263 /*
 264  * Interprets a ctype=cvalue pair and adds it to the current match
 265  * specification.
 266  *
 267  */
 268 void cmd_criteria_add(I3_CMD, const char *ctype, const char *cvalue) {
 269     match_parse_property(current_match, ctype, cvalue);
 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     owindow *current;
 279
 280     DLOG("which=%s\n", which);
 281
 282     /* We have nothing to move:
 283      *  when criteria was specified but didn't match any window or
 284      *  when criteria wasn't specified and we don't have any window focused. */
 285     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 286         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 287          !con_has_children(focused))) {
 288         ysuccess(false);
 289         return;
 290     }
 291
 292     HANDLE_EMPTY_MATCH;
 293
 294     /* get the workspace */
 295     Con *ws;
 296     if (strcmp(which, "next") == 0)
 297         ws = workspace_next();
 298     else if (strcmp(which, "prev") == 0)
 299         ws = workspace_prev();
 300     else if (strcmp(which, "next_on_output") == 0)
 301         ws = workspace_next_on_output();
 302     else if (strcmp(which, "prev_on_output") == 0)
 303         ws = workspace_prev_on_output();
 304     else if (strcmp(which, "current") == 0)
 305         ws = con_get_workspace(focused);
 306     else {
 307         ELOG("BUG: called with which=%s\n", which);
 308         ysuccess(false);
 309         return;
 310     }
 311
 312     TAILQ_FOREACH(current, &owindows, owindows) {
 313         DLOG("matching: %p / %s\n", current->con, current->con->name);
 314         con_move_to_workspace(current->con, ws, true, false, false);
 315     }
 316
 317     cmd_output->needs_tree_render = true;
 318     // XXX: default reply for now, make this a better reply
 319     ysuccess(true);
 320 }
 321
 322 /**
 323  * Implementation of 'move [window|container] [to] workspace back_and_forth'.
 324  *
 325  */
 326 void cmd_move_con_to_workspace_back_and_forth(I3_CMD) {
 327     owindow *current;
 328     Con *ws;
 329
 330     ws = workspace_back_and_forth_get();
 331
 332     if (ws == NULL) {
 333         yerror("No workspace was previously active.");
 334         return;
 335     }
 336
 337     HANDLE_EMPTY_MATCH;
 338
 339     TAILQ_FOREACH(current, &owindows, owindows) {
 340         DLOG("matching: %p / %s\n", current->con, current->con->name);
 341         con_move_to_workspace(current->con, ws, true, false, false);
 342     }
 343
 344     cmd_output->needs_tree_render = true;
 345     // XXX: default reply for now, make this a better reply
 346     ysuccess(true);
 347 }
 348
 349 /*
 350  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace <name>'.
 351  *
 352  */
 353 void cmd_move_con_to_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 354     if (strncasecmp(name, "__", strlen("__")) == 0) {
 355         LOG("You cannot move containers to i3-internal workspaces (\"%s\").\n", name);
 356         ysuccess(false);
 357         return;
 358     }
 359
 360     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 361     owindow *current;
 362
 363     /* We have nothing to move:
 364      *  when criteria was specified but didn't match any window or
 365      *  when criteria wasn't specified and we don't have any window focused. */
 366     if (!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) {
 367         ELOG("No windows match your criteria, cannot move.\n");
 368         ysuccess(false);
 369         return;
 370     } else if (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 371                !con_has_children(focused)) {
 372         ysuccess(false);
 373         return;
 374     }
 375
 376     LOG("should move window to workspace %s\n", name);
 377     /* get the workspace */
 378     Con *ws = workspace_get(name, NULL);
 379
 380     if (!no_auto_back_and_forth)
 381         ws = maybe_auto_back_and_forth_workspace(ws);
 382
 383     HANDLE_EMPTY_MATCH;
 384
 385     TAILQ_FOREACH(current, &owindows, owindows) {
 386         DLOG("matching: %p / %s\n", current->con, current->con->name);
 387         con_move_to_workspace(current->con, ws, true, false, false);
 388     }
 389
 390     cmd_output->needs_tree_render = true;
 391     // XXX: default reply for now, make this a better reply
 392     ysuccess(true);
 393 }
 394
 395 /*
 396  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace number <name>'.
 397  *
 398  */
 399 void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 400     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 401     owindow *current;
 402
 403     /* We have nothing to move:
 404      *  when criteria was specified but didn't match any window or
 405      *  when criteria wasn't specified and we don't have any window focused. */
 406     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 407         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 408          !con_has_children(focused))) {
 409         ysuccess(false);
 410         return;
 411     }
 412
 413     LOG("should move window to workspace %s\n", which);
 414     /* get the workspace */
 415     Con *output, *workspace = NULL;
 416
 417     long parsed_num = ws_name_to_number(which);
 418
 419     if (parsed_num == -1) {
 420         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 421         yerror("Could not parse number \"%s\"", which);
 422         return;
 423     }
 424
 425     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
 426     GREP_FIRST(workspace, output_get_content(output),
 427                child->num == parsed_num);
 428
 429     if (!workspace) {
 430         workspace = workspace_get(which, NULL);
 431     }
 432
 433     if (!no_auto_back_and_forth)
 434         workspace = maybe_auto_back_and_forth_workspace(workspace);
 435
 436     HANDLE_EMPTY_MATCH;
 437
 438     TAILQ_FOREACH(current, &owindows, owindows) {
 439         DLOG("matching: %p / %s\n", current->con, current->con->name);
 440         con_move_to_workspace(current->con, workspace, true, false, false);
 441     }
 442
 443     cmd_output->needs_tree_render = true;
 444     // XXX: default reply for now, make this a better reply
 445     ysuccess(true);
 446 }
 447
 448 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction, Con *floating_con, int px) {
 449     LOG("floating resize\n");
 450     Rect old_rect = floating_con->rect;
 451     Con *focused_con = con_descend_focused(floating_con);
 452
 453     /* ensure that resize will take place even if pixel increment is smaller than
 454      * height increment or width increment.
 455      * fixes #1011 */
 456     const i3Window *window = focused_con->window;
 457     if (window != NULL) {
 458         if (strcmp(direction, "up") == 0 || strcmp(direction, "down") == 0 ||
 459             strcmp(direction, "height") == 0) {
 460             if (px < 0)
 461                 px = (-px < window->height_increment) ? -window->height_increment : px;
 462             else
 463                 px = (px < window->height_increment) ? window->height_increment : px;
 464         } else if (strcmp(direction, "left") == 0 || strcmp(direction, "right") == 0) {
 465             if (px < 0)
 466                 px = (-px < window->width_increment) ? -window->width_increment : px;
 467             else
 468                 px = (px < window->width_increment) ? window->width_increment : px;
 469         }
 470     }
 471
 472     if (strcmp(direction, "up") == 0) {
 473         floating_con->rect.height += px;
 474     } else if (strcmp(direction, "down") == 0 || strcmp(direction, "height") == 0) {
 475         floating_con->rect.height += px;
 476     } else if (strcmp(direction, "left") == 0) {
 477         floating_con->rect.width += px;
 478     } else {
 479         floating_con->rect.width += px;
 480     }
 481
 482     floating_check_size(floating_con);
 483
 484     /* Did we actually resize anything or did the size constraints prevent us?
 485      * If we could not resize, exit now to not move the window. */
 486     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0)
 487         return;
 488
 489     if (strcmp(direction, "up") == 0) {
 490         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 491     } else if (strcmp(direction, "left") == 0) {
 492         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 493     }
 494
 495     /* If this is a scratchpad window, don't auto center it from now on. */
 496     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
 497         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 498 }
 499
 500 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 501     LOG("tiling resize\n");
 502     Con *second = NULL;
 503     Con *first = current;
 504     direction_t search_direction;
 505     if (!strcmp(direction, "left"))
 506         search_direction = D_LEFT;
 507     else if (!strcmp(direction, "right"))
 508         search_direction = D_RIGHT;
 509     else if (!strcmp(direction, "up"))
 510         search_direction = D_UP;
 511     else
 512         search_direction = D_DOWN;
 513
 514     bool res = resize_find_tiling_participants(&first, &second, search_direction);
 515     if (!res) {
 516         LOG("No second container in this direction found.\n");
 517         ysuccess(false);
 518         return false;
 519     }
 520
 521     /* get the default percentage */
 522     int children = con_num_children(first->parent);
 523     LOG("ins. %d children\n", children);
 524     double percentage = 1.0 / children;
 525     LOG("default percentage = %f\n", percentage);
 526
 527     /* resize */
 528     LOG("second->percent = %f\n", second->percent);
 529     LOG("first->percent before = %f\n", first->percent);
 530     if (first->percent == 0.0)
 531         first->percent = percentage;
 532     if (second->percent == 0.0)
 533         second->percent = percentage;
 534     double new_first_percent = first->percent + ((double)ppt / 100.0);
 535     double new_second_percent = second->percent - ((double)ppt / 100.0);
 536     LOG("new_first_percent = %f\n", new_first_percent);
 537     LOG("new_second_percent = %f\n", new_second_percent);
 538     /* Ensure that the new percentages are positive and greater than
 539      * 0.05 to have a reasonable minimum size. */
 540     if (definitelyGreaterThan(new_first_percent, 0.05, DBL_EPSILON) &&
 541         definitelyGreaterThan(new_second_percent, 0.05, DBL_EPSILON)) {
 542         first->percent += ((double)ppt / 100.0);
 543         second->percent -= ((double)ppt / 100.0);
 544         LOG("first->percent after = %f\n", first->percent);
 545         LOG("second->percent after = %f\n", second->percent);
 546     } else {
 547         LOG("Not resizing, already at minimum size\n");
 548     }
 549
 550     return true;
 551 }
 552
 553 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 554     LOG("width/height resize\n");
 555     /* get the appropriate current container (skip stacked/tabbed cons) */
 556     while (current->parent->layout == L_STACKED ||
 557            current->parent->layout == L_TABBED)
 558         current = current->parent;
 559
 560     /* Then further go up until we find one with the matching orientation. */
 561     orientation_t search_orientation =
 562         (strcmp(direction, "width") == 0 ? HORIZ : VERT);
 563
 564     while (current->type != CT_WORKSPACE &&
 565            current->type != CT_FLOATING_CON &&
 566            (con_orientation(current->parent) != search_orientation || con_num_children(current->parent) == 1))
 567         current = current->parent;
 568
 569     /* get the default percentage */
 570     int children = con_num_children(current->parent);
 571     LOG("ins. %d children\n", children);
 572     double percentage = 1.0 / children;
 573     LOG("default percentage = %f\n", percentage);
 574
 575     orientation_t orientation = con_orientation(current->parent);
 576
 577     if ((orientation == HORIZ &&
 578          strcmp(direction, "height") == 0) ||
 579         (orientation == VERT &&
 580          strcmp(direction, "width") == 0)) {
 581         LOG("You cannot resize in that direction. Your focus is in a %s split container currently.\n",
 582             (orientation == HORIZ ? "horizontal" : "vertical"));
 583         ysuccess(false);
 584         return false;
 585     }
 586
 587     if (children == 1) {
 588         LOG("This is the only container, cannot resize.\n");
 589         ysuccess(false);
 590         return false;
 591     }
 592
 593     /* Ensure all the other children have a percentage set. */
 594     Con *child;
 595     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 596         LOG("child->percent = %f (child %p)\n", child->percent, child);
 597         if (child->percent == 0.0)
 598             child->percent = percentage;
 599     }
 600
 601     double new_current_percent = current->percent + ((double)ppt / 100.0);
 602     double subtract_percent = ((double)ppt / 100.0) / (children - 1);
 603     LOG("new_current_percent = %f\n", new_current_percent);
 604     LOG("subtract_percent = %f\n", subtract_percent);
 605     /* Ensure that the new percentages are positive and greater than
 606      * 0.05 to have a reasonable minimum size. */
 607     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 608         if (child == current)
 609             continue;
 610         if (!definitelyGreaterThan(child->percent - subtract_percent, 0.05, DBL_EPSILON)) {
 611             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 612             ysuccess(false);
 613             return false;
 614         }
 615     }
 616     if (!definitelyGreaterThan(new_current_percent, 0.05, DBL_EPSILON)) {
 617         LOG("Not resizing, already at minimum size\n");
 618         ysuccess(false);
 619         return false;
 620     }
 621
 622     current->percent += ((double)ppt / 100.0);
 623     LOG("current->percent after = %f\n", current->percent);
 624
 625     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 626         if (child == current)
 627             continue;
 628         child->percent -= subtract_percent;
 629         LOG("child->percent after (%p) = %f\n", child, child->percent);
 630     }
 631
 632     return true;
 633 }
 634
 635 /*
 636  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 637  *
 638  */
 639 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 640     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 641     if (strcmp(way, "shrink") == 0) {
 642         resize_px *= -1;
 643         resize_ppt *= -1;
 644     }
 645
 646     HANDLE_EMPTY_MATCH;
 647
 648     owindow *current;
 649     TAILQ_FOREACH(current, &owindows, owindows) {
 650         /* Don't handle dock windows (issue #1201) */
 651         if (current->con->window && current->con->window->dock) {
 652             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 653             continue;
 654         }
 655
 656         Con *floating_con;
 657         if ((floating_con = con_inside_floating(current->con))) {
 658             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 659         } else {
 660             if (strcmp(direction, "width") == 0 ||
 661                 strcmp(direction, "height") == 0) {
 662                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 663                                                     current->con, way, direction, resize_ppt))
 664                     return;
 665             } else {
 666                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 667                                                  current->con, way, direction, resize_ppt))
 668                     return;
 669             }
 670         }
 671     }
 672
 673     cmd_output->needs_tree_render = true;
 674     // XXX: default reply for now, make this a better reply
 675     ysuccess(true);
 676 }
 677
 678 /*
 679  * Implementation of 'resize set <px> [px] <px> [px]'.
 680  *
 681  */
 682 void cmd_resize_set(I3_CMD, long cwidth, long cheight) {
 683     DLOG("resizing to %ldx%ld px\n", cwidth, cheight);
 684     if (cwidth <= 0 || cheight <= 0) {
 685         ELOG("Resize failed: dimensions cannot be negative (was %ldx%ld)\n", cwidth, cheight);
 686         return;
 687     }
 688
 689     HANDLE_EMPTY_MATCH;
 690
 691     owindow *current;
 692     TAILQ_FOREACH(current, &owindows, owindows) {
 693         Con *floating_con;
 694         if ((floating_con = con_inside_floating(current->con))) {
 695             floating_resize(floating_con, cwidth, cheight);
 696         } else {
 697             ELOG("Resize failed: %p not a floating container\n", current->con);
 698         }
 699     }
 700
 701     cmd_output->needs_tree_render = true;
 702     // XXX: default reply for now, make this a better reply
 703     ysuccess(true);
 704 }
 705
 706 /*
 707  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 708  *
 709  */
 710 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 711     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 712     owindow *current;
 713
 714     HANDLE_EMPTY_MATCH;
 715
 716     TAILQ_FOREACH(current, &owindows, owindows) {
 717         DLOG("matching: %p / %s\n", current->con, current->con->name);
 718         int border_style = current->con->border_style;
 719         int con_border_width = border_width;
 720
 721         if (strcmp(border_style_str, "toggle") == 0) {
 722             border_style++;
 723             border_style %= 3;
 724             if (border_style == BS_NORMAL)
 725                 con_border_width = 2;
 726             else if (border_style == BS_NONE)
 727                 con_border_width = 0;
 728             else if (border_style == BS_PIXEL)
 729                 con_border_width = 1;
 730         } else {
 731             if (strcmp(border_style_str, "normal") == 0) {
 732                 border_style = BS_NORMAL;
 733             } else if (strcmp(border_style_str, "pixel") == 0) {
 734                 border_style = BS_PIXEL;
 735             } else if (strcmp(border_style_str, "1pixel") == 0) {
 736                 border_style = BS_PIXEL;
 737                 con_border_width = 1;
 738             } else if (strcmp(border_style_str, "none") == 0) {
 739                 border_style = BS_NONE;
 740             } else {
 741                 ELOG("BUG: called with border_style=%s\n", border_style_str);
 742                 ysuccess(false);
 743                 return;
 744             }
 745         }
 746
 747         con_set_border_style(current->con, border_style, logical_px(con_border_width));
 748     }
 749
 750     cmd_output->needs_tree_render = true;
 751     // XXX: default reply for now, make this a better reply
 752     ysuccess(true);
 753 }
 754
 755 /*
 756  * Implementation of 'nop <comment>'.
 757  *
 758  */
 759 void cmd_nop(I3_CMD, const char *comment) {
 760     LOG("-------------------------------------------------\n");
 761     LOG("  NOP: %s\n", comment);
 762     LOG("-------------------------------------------------\n");
 763 }
 764
 765 /*
 766  * Implementation of 'append_layout <path>'.
 767  *
 768  */
 769 void cmd_append_layout(I3_CMD, const char *cpath) {
 770     char *path = sstrdup(cpath);
 771     LOG("Appending layout \"%s\"\n", path);
 772
 773     /* Make sure we allow paths like '~/.i3/layout.json' */
 774     path = resolve_tilde(path);
 775
 776     char *buf = NULL;
 777     ssize_t len;
 778     if ((len = slurp(path, &buf)) < 0) {
 779         /* slurp already logged an error. */
 780         goto out;
 781     }
 782
 783     if (!json_validate(buf, len)) {
 784         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 785         yerror("Could not parse \"%s\" as JSON.", path);
 786         goto out;
 787     }
 788
 789     json_content_t content = json_determine_content(buf, len);
 790     LOG("JSON content = %d\n", content);
 791     if (content == JSON_CONTENT_UNKNOWN) {
 792         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 793         yerror("Could not determine the contents of \"%s\".", path);
 794         goto out;
 795     }
 796
 797     Con *parent = focused;
 798     if (content == JSON_CONTENT_WORKSPACE) {
 799         parent = output_get_content(con_get_output(parent));
 800     } else {
 801         /* We need to append the layout to a split container, since a leaf
 802          * container must not have any children (by definition).
 803          * Note that we explicitly check for workspaces, since they are okay for
 804          * this purpose, but con_accepts_window() returns false for workspaces. */
 805         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 806             parent = parent->parent;
 807     }
 808     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 809     char *errormsg = NULL;
 810     tree_append_json(parent, buf, len, &errormsg);
 811     if (errormsg != NULL) {
 812         yerror(errormsg);
 813         free(errormsg);
 814         /* Note that we continue executing since tree_append_json() has
 815          * side-effects — user-provided layouts can be partly valid, partly
 816          * invalid, leading to half of the placeholder containers being
 817          * created. */
 818     } else {
 819         ysuccess(true);
 820     }
 821
 822     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 823     // false); should be enough, but when sending 'workspace 4; append_layout
 824     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 825     // is not executed yet and will be batched with append_layout’s
 826     // needs_tree_render after the parser finished. We should check if that is
 827     // necessary at all.
 828     render_con(croot, false);
 829
 830     restore_open_placeholder_windows(parent);
 831
 832     if (content == JSON_CONTENT_WORKSPACE)
 833         ipc_send_workspace_event("restored", parent, NULL);
 834
 835     cmd_output->needs_tree_render = true;
 836 out:
 837     free(path);
 838     free(buf);
 839 }
 840
 841 /*
 842  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 843  *
 844  */
 845 void cmd_workspace(I3_CMD, const char *which) {
 846     Con *ws;
 847
 848     DLOG("which=%s\n", which);
 849
 850     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 851         LOG("Cannot switch workspace while in global fullscreen\n");
 852         ysuccess(false);
 853         return;
 854     }
 855
 856     if (strcmp(which, "next") == 0)
 857         ws = workspace_next();
 858     else if (strcmp(which, "prev") == 0)
 859         ws = workspace_prev();
 860     else if (strcmp(which, "next_on_output") == 0)
 861         ws = workspace_next_on_output();
 862     else if (strcmp(which, "prev_on_output") == 0)
 863         ws = workspace_prev_on_output();
 864     else {
 865         ELOG("BUG: called with which=%s\n", which);
 866         ysuccess(false);
 867         return;
 868     }
 869
 870     workspace_show(ws);
 871
 872     cmd_output->needs_tree_render = true;
 873     // XXX: default reply for now, make this a better reply
 874     ysuccess(true);
 875 }
 876
 877 /*
 878  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 879  *
 880  */
 881 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 882     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 883     Con *output, *workspace = NULL;
 884
 885     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 886         LOG("Cannot switch workspace while in global fullscreen\n");
 887         ysuccess(false);
 888         return;
 889     }
 890
 891     long parsed_num = ws_name_to_number(which);
 892
 893     if (parsed_num == -1) {
 894         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 895         yerror("Could not parse number \"%s\"", which);
 896         return;
 897     }
 898
 899     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
 900     GREP_FIRST(workspace, output_get_content(output),
 901                child->num == parsed_num);
 902
 903     if (!workspace) {
 904         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 905         ysuccess(true);
 906         workspace_show_by_name(which);
 907         cmd_output->needs_tree_render = true;
 908         return;
 909     }
 910     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 911         ysuccess(true);
 912         return;
 913     }
 914     workspace_show(workspace);
 915
 916     cmd_output->needs_tree_render = true;
 917     // XXX: default reply for now, make this a better reply
 918     ysuccess(true);
 919 }
 920
 921 /*
 922  * Implementation of 'workspace back_and_forth'.
 923  *
 924  */
 925 void cmd_workspace_back_and_forth(I3_CMD) {
 926     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 927         LOG("Cannot switch workspace while in global fullscreen\n");
 928         ysuccess(false);
 929         return;
 930     }
 931
 932     workspace_back_and_forth();
 933
 934     cmd_output->needs_tree_render = true;
 935     // XXX: default reply for now, make this a better reply
 936     ysuccess(true);
 937 }
 938
 939 /*
 940  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 941  *
 942  */
 943 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 944     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 945
 946     if (strncasecmp(name, "__", strlen("__")) == 0) {
 947         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 948         ysuccess(false);
 949         return;
 950     }
 951
 952     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 953         LOG("Cannot switch workspace while in global fullscreen\n");
 954         ysuccess(false);
 955         return;
 956     }
 957
 958     DLOG("should switch to workspace %s\n", name);
 959     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 960         ysuccess(true);
 961         return;
 962     }
 963     workspace_show_by_name(name);
 964
 965     cmd_output->needs_tree_render = true;
 966     // XXX: default reply for now, make this a better reply
 967     ysuccess(true);
 968 }
 969
 970 /*
 971  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 972  *
 973  */
 974 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 975     HANDLE_EMPTY_MATCH;
 976
 977     owindow *current = TAILQ_FIRST(&owindows);
 978     if (current == NULL) {
 979         ysuccess(false);
 980         return;
 981     }
 982
 983     /* Marks must be unique, i.e., no two windows must have the same mark. */
 984     if (current != TAILQ_LAST(&owindows, owindows_head)) {
 985         yerror("A mark must not be put onto more than one window");
 986         return;
 987     }
 988
 989     DLOG("matching: %p / %s\n", current->con, current->con->name);
 990
 991     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
 992     if (toggle != NULL) {
 993         con_mark_toggle(current->con, mark, mark_mode);
 994     } else {
 995         con_mark(current->con, mark, mark_mode);
 996     }
 997
 998     cmd_output->needs_tree_render = true;
 999     // XXX: default reply for now, make this a better reply
1000     ysuccess(true);
1001 }
1002
1003 /*
1004  * Implementation of 'unmark [mark]'
1005  *
1006  */
1007 void cmd_unmark(I3_CMD, const char *mark) {
1008     if (match_is_empty(current_match)) {
1009         con_unmark(NULL, mark);
1010     } else {
1011         owindow *current;
1012         TAILQ_FOREACH(current, &owindows, owindows) {
1013             con_unmark(current->con, mark);
1014         }
1015     }
1016
1017     cmd_output->needs_tree_render = true;
1018     // XXX: default reply for now, make this a better reply
1019     ysuccess(true);
1020 }
1021
1022 /*
1023  * Implementation of 'mode <string>'.
1024  *
1025  */
1026 void cmd_mode(I3_CMD, const char *mode) {
1027     DLOG("mode=%s\n", mode);
1028     switch_mode(mode);
1029
1030     // XXX: default reply for now, make this a better reply
1031     ysuccess(true);
1032 }
1033
1034 /*
1035  * Implementation of 'move [window|container] [to] output <str>'.
1036  *
1037  */
1038 void cmd_move_con_to_output(I3_CMD, const char *name) {
1039     DLOG("Should move window to output \"%s\".\n", name);
1040     HANDLE_EMPTY_MATCH;
1041
1042     owindow *current;
1043     bool had_error = false;
1044     TAILQ_FOREACH(current, &owindows, owindows) {
1045         DLOG("matching: %p / %s\n", current->con, current->con->name);
1046
1047         had_error |= !con_move_to_output_name(current->con, name, true);
1048     }
1049
1050     cmd_output->needs_tree_render = true;
1051     ysuccess(!had_error);
1052 }
1053
1054 /*
1055  * Implementation of 'move [container|window] [to] mark <str>'.
1056  *
1057  */
1058 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1059     DLOG("moving window to mark \"%s\"\n", mark);
1060
1061     HANDLE_EMPTY_MATCH;
1062
1063     bool result = true;
1064     owindow *current;
1065     TAILQ_FOREACH(current, &owindows, owindows) {
1066         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1067         result &= con_move_to_mark(current->con, mark);
1068     }
1069
1070     cmd_output->needs_tree_render = true;
1071     ysuccess(result);
1072 }
1073
1074 /*
1075  * Implementation of 'floating enable|disable|toggle'
1076  *
1077  */
1078 void cmd_floating(I3_CMD, const char *floating_mode) {
1079     owindow *current;
1080
1081     DLOG("floating_mode=%s\n", floating_mode);
1082
1083     HANDLE_EMPTY_MATCH;
1084
1085     TAILQ_FOREACH(current, &owindows, owindows) {
1086         DLOG("matching: %p / %s\n", current->con, current->con->name);
1087         if (strcmp(floating_mode, "toggle") == 0) {
1088             DLOG("should toggle mode\n");
1089             toggle_floating_mode(current->con, false);
1090         } else {
1091             DLOG("should switch mode to %s\n", floating_mode);
1092             if (strcmp(floating_mode, "enable") == 0) {
1093                 floating_enable(current->con, false);
1094             } else {
1095                 floating_disable(current->con, false);
1096             }
1097         }
1098     }
1099
1100     cmd_output->needs_tree_render = true;
1101     // XXX: default reply for now, make this a better reply
1102     ysuccess(true);
1103 }
1104
1105 /*
1106  * Implementation of 'move workspace to [output] <str>'.
1107  *
1108  */
1109 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1110     DLOG("should move workspace to output %s\n", name);
1111
1112     HANDLE_EMPTY_MATCH;
1113
1114     owindow *current;
1115     TAILQ_FOREACH(current, &owindows, owindows) {
1116         Con *ws = con_get_workspace(current->con);
1117         bool success = workspace_move_to_output(ws, name);
1118         if (!success) {
1119             ELOG("Failed to move workspace to output.\n");
1120             ysuccess(false);
1121             return;
1122         }
1123     }
1124
1125     cmd_output->needs_tree_render = true;
1126     // XXX: default reply for now, make this a better reply
1127     ysuccess(true);
1128 }
1129
1130 /*
1131  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1132  *
1133  */
1134 void cmd_split(I3_CMD, const char *direction) {
1135     HANDLE_EMPTY_MATCH;
1136
1137     owindow *current;
1138     LOG("splitting in direction %c\n", direction[0]);
1139     TAILQ_FOREACH(current, &owindows, owindows) {
1140         if (con_is_docked(current->con)) {
1141             ELOG("Cannot split a docked container, skipping.\n");
1142             continue;
1143         }
1144
1145         DLOG("matching: %p / %s\n", current->con, current->con->name);
1146         if (direction[0] == 't') {
1147             layout_t current_layout;
1148             if (current->con->type == CT_WORKSPACE) {
1149                 current_layout = current->con->layout;
1150             } else {
1151                 current_layout = current->con->parent->layout;
1152             }
1153             /* toggling split orientation */
1154             if (current_layout == L_SPLITH) {
1155                 tree_split(current->con, VERT);
1156             } else {
1157                 tree_split(current->con, HORIZ);
1158             }
1159         } else {
1160             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1161         }
1162     }
1163
1164     cmd_output->needs_tree_render = true;
1165     // XXX: default reply for now, make this a better reply
1166     ysuccess(true);
1167 }
1168
1169 /*
1170  * Implementation of 'kill [window|client]'.
1171  *
1172  */
1173 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1174     if (kill_mode_str == NULL)
1175         kill_mode_str = "window";
1176
1177     DLOG("kill_mode=%s\n", kill_mode_str);
1178
1179     int kill_mode;
1180     if (strcmp(kill_mode_str, "window") == 0)
1181         kill_mode = KILL_WINDOW;
1182     else if (strcmp(kill_mode_str, "client") == 0)
1183         kill_mode = KILL_CLIENT;
1184     else {
1185         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1186         ysuccess(false);
1187         return;
1188     }
1189
1190     HANDLE_EMPTY_MATCH;
1191
1192     owindow *current;
1193     TAILQ_FOREACH(current, &owindows, owindows) {
1194         con_close(current->con, kill_mode);
1195     }
1196
1197     cmd_output->needs_tree_render = true;
1198     // XXX: default reply for now, make this a better reply
1199     ysuccess(true);
1200 }
1201
1202 /*
1203  * Implementation of 'exec [--no-startup-id] <command>'.
1204  *
1205  */
1206 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1207     bool no_startup_id = (nosn != NULL);
1208
1209     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1210     start_application(command, no_startup_id);
1211
1212     // XXX: default reply for now, make this a better reply
1213     ysuccess(true);
1214 }
1215
1216 /*
1217  * Implementation of 'focus left|right|up|down'.
1218  *
1219  */
1220 void cmd_focus_direction(I3_CMD, const char *direction) {
1221     DLOG("direction = *%s*\n", direction);
1222
1223     if (strcmp(direction, "left") == 0)
1224         tree_next('p', HORIZ);
1225     else if (strcmp(direction, "right") == 0)
1226         tree_next('n', HORIZ);
1227     else if (strcmp(direction, "up") == 0)
1228         tree_next('p', VERT);
1229     else if (strcmp(direction, "down") == 0)
1230         tree_next('n', VERT);
1231     else {
1232         ELOG("Invalid focus direction (%s)\n", direction);
1233         ysuccess(false);
1234         return;
1235     }
1236
1237     cmd_output->needs_tree_render = true;
1238     // XXX: default reply for now, make this a better reply
1239     ysuccess(true);
1240 }
1241
1242 /*
1243  * Implementation of 'focus tiling|floating|mode_toggle'.
1244  *
1245  */
1246 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1247     DLOG("window_mode = %s\n", window_mode);
1248
1249     Con *ws = con_get_workspace(focused);
1250     if (ws != NULL) {
1251         if (strcmp(window_mode, "mode_toggle") == 0) {
1252             if (con_inside_floating(focused))
1253                 window_mode = "tiling";
1254             else
1255                 window_mode = "floating";
1256         }
1257         Con *current;
1258         TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1259             if ((strcmp(window_mode, "floating") == 0 && current->type != CT_FLOATING_CON) ||
1260                 (strcmp(window_mode, "tiling") == 0 && current->type == CT_FLOATING_CON))
1261                 continue;
1262
1263             con_focus(con_descend_focused(current));
1264             break;
1265         }
1266     }
1267
1268     cmd_output->needs_tree_render = true;
1269     // XXX: default reply for now, make this a better reply
1270     ysuccess(true);
1271 }
1272
1273 /*
1274  * Implementation of 'focus parent|child'.
1275  *
1276  */
1277 void cmd_focus_level(I3_CMD, const char *level) {
1278     DLOG("level = %s\n", level);
1279     bool success = false;
1280
1281     /* Focusing the parent can only be allowed if the newly
1282      * focused container won't escape the fullscreen container. */
1283     if (strcmp(level, "parent") == 0) {
1284         if (focused && focused->parent) {
1285             if (con_fullscreen_permits_focusing(focused->parent))
1286                 success = level_up();
1287             else
1288                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1289         }
1290     }
1291
1292     /* Focusing a child should always be allowed. */
1293     else
1294         success = level_down();
1295
1296     cmd_output->needs_tree_render = success;
1297     // XXX: default reply for now, make this a better reply
1298     ysuccess(success);
1299 }
1300
1301 /*
1302  * Implementation of 'focus'.
1303  *
1304  */
1305 void cmd_focus(I3_CMD) {
1306     DLOG("current_match = %p\n", current_match);
1307
1308     if (match_is_empty(current_match)) {
1309         ELOG("You have to specify which window/container should be focused.\n");
1310         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1311
1312         yerror("You have to specify which window/container should be focused");
1313
1314         return;
1315     }
1316
1317     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1318     int count = 0;
1319     owindow *current;
1320     TAILQ_FOREACH(current, &owindows, owindows) {
1321         Con *ws = con_get_workspace(current->con);
1322         /* If no workspace could be found, this was a dock window.
1323          * Just skip it, you cannot focus dock windows. */
1324         if (!ws)
1325             continue;
1326
1327         /* Check the fullscreen focus constraints. */
1328         if (!con_fullscreen_permits_focusing(current->con)) {
1329             LOG("Cannot change focus while in fullscreen mode (fullscreen rules).\n");
1330             ysuccess(false);
1331             return;
1332         }
1333
1334         /* In case this is a scratchpad window, call scratchpad_show(). */
1335         if (ws == __i3_scratch) {
1336             scratchpad_show(current->con);
1337             count++;
1338             /* While for the normal focus case we can change focus multiple
1339              * times and only a single window ends up focused, we could show
1340              * multiple scratchpad windows. So, rather break here. */
1341             break;
1342         }
1343
1344         /* If the container is not on the current workspace,
1345          * workspace_show() will switch to a different workspace and (if
1346          * enabled) trigger a mouse pointer warp to the currently focused
1347          * container (!) on the target workspace.
1348          *
1349          * Therefore, before calling workspace_show(), we make sure that
1350          * 'current' will be focused on the workspace. However, we cannot
1351          * just con_focus(current) because then the pointer will not be
1352          * warped at all (the code thinks we are already there).
1353          *
1354          * So we focus 'current' to make it the currently focused window of
1355          * the target workspace, then revert focus. */
1356         Con *currently_focused = focused;
1357         con_focus(current->con);
1358         con_focus(currently_focused);
1359
1360         /* Now switch to the workspace, then focus */
1361         workspace_show(ws);
1362         LOG("focusing %p / %s\n", current->con, current->con->name);
1363         con_focus(current->con);
1364         count++;
1365     }
1366
1367     if (count > 1)
1368         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1369             "while only exactly one container can be focused at a time.\n",
1370             count);
1371
1372     cmd_output->needs_tree_render = true;
1373     ysuccess(count > 0);
1374 }
1375
1376 /*
1377  * Implementation of 'fullscreen enable|toggle [global]' and
1378  *                   'fullscreen disable'
1379  *
1380  */
1381 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1382     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1383     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1384     owindow *current;
1385
1386     HANDLE_EMPTY_MATCH;
1387
1388     TAILQ_FOREACH(current, &owindows, owindows) {
1389         DLOG("matching: %p / %s\n", current->con, current->con->name);
1390         if (strcmp(action, "toggle") == 0) {
1391             con_toggle_fullscreen(current->con, mode);
1392         } else if (strcmp(action, "enable") == 0) {
1393             con_enable_fullscreen(current->con, mode);
1394         } else if (strcmp(action, "disable") == 0) {
1395             con_disable_fullscreen(current->con);
1396         }
1397     }
1398
1399     cmd_output->needs_tree_render = true;
1400     // XXX: default reply for now, make this a better reply
1401     ysuccess(true);
1402 }
1403
1404 /*
1405  * Implementation of 'sticky enable|disable|toggle'.
1406  *
1407  */
1408 void cmd_sticky(I3_CMD, const char *action) {
1409     DLOG("%s sticky on window\n", action);
1410     HANDLE_EMPTY_MATCH;
1411
1412     owindow *current;
1413     TAILQ_FOREACH(current, &owindows, owindows) {
1414         if (current->con->window == NULL) {
1415             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1416             continue;
1417         }
1418         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1419
1420         bool sticky = false;
1421         if (strcmp(action, "enable") == 0)
1422             sticky = true;
1423         else if (strcmp(action, "disable") == 0)
1424             sticky = false;
1425         else if (strcmp(action, "toggle") == 0)
1426             sticky = !current->con->sticky;
1427
1428         current->con->sticky = sticky;
1429         ewmh_update_sticky(current->con->window->id, sticky);
1430     }
1431
1432     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1433      * sure it gets pushed to the front now. */
1434     output_push_sticky_windows(focused);
1435
1436     ewmh_update_wm_desktop();
1437
1438     cmd_output->needs_tree_render = true;
1439     ysuccess(true);
1440 }
1441
1442 /*
1443  * Implementation of 'move <direction> [<pixels> [px]]'.
1444  *
1445  */
1446 void cmd_move_direction(I3_CMD, const char *direction, long move_px) {
1447     owindow *current;
1448     HANDLE_EMPTY_MATCH;
1449
1450     Con *initially_focused = focused;
1451
1452     TAILQ_FOREACH(current, &owindows, owindows) {
1453         DLOG("moving in direction %s, px %ld\n", direction, move_px);
1454         if (con_is_floating(current->con)) {
1455             DLOG("floating move with %ld pixels\n", move_px);
1456             Rect newrect = current->con->parent->rect;
1457             if (strcmp(direction, "left") == 0) {
1458                 newrect.x -= move_px;
1459             } else if (strcmp(direction, "right") == 0) {
1460                 newrect.x += move_px;
1461             } else if (strcmp(direction, "up") == 0) {
1462                 newrect.y -= move_px;
1463             } else if (strcmp(direction, "down") == 0) {
1464                 newrect.y += move_px;
1465             }
1466             floating_reposition(current->con->parent, newrect);
1467         } else {
1468             tree_move(current->con, (strcmp(direction, "right") == 0 ? D_RIGHT : (strcmp(direction, "left") == 0 ? D_LEFT : (strcmp(direction, "up") == 0 ? D_UP : D_DOWN))));
1469             cmd_output->needs_tree_render = true;
1470         }
1471     }
1472
1473     /* the move command should not disturb focus */
1474     if (focused != initially_focused)
1475         con_focus(initially_focused);
1476
1477     // XXX: default reply for now, make this a better reply
1478     ysuccess(true);
1479 }
1480
1481 /*
1482  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1483  *
1484  */
1485 void cmd_layout(I3_CMD, const char *layout_str) {
1486     HANDLE_EMPTY_MATCH;
1487
1488     layout_t layout;
1489     if (!layout_from_name(layout_str, &layout)) {
1490         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1491         return;
1492     }
1493
1494     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1495
1496     owindow *current;
1497     TAILQ_FOREACH(current, &owindows, owindows) {
1498         if (con_is_docked(current->con)) {
1499             ELOG("cannot change layout of a docked container, skipping it.\n");
1500             continue;
1501         }
1502
1503         DLOG("matching: %p / %s\n", current->con, current->con->name);
1504         con_set_layout(current->con, layout);
1505     }
1506
1507     cmd_output->needs_tree_render = true;
1508     // XXX: default reply for now, make this a better reply
1509     ysuccess(true);
1510 }
1511
1512 /*
1513  * Implementation of 'layout toggle [all|split]'.
1514  *
1515  */
1516 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1517     owindow *current;
1518
1519     if (toggle_mode == NULL)
1520         toggle_mode = "default";
1521
1522     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1523
1524     /* check if the match is empty, not if the result is empty */
1525     if (match_is_empty(current_match))
1526         con_toggle_layout(focused, toggle_mode);
1527     else {
1528         TAILQ_FOREACH(current, &owindows, owindows) {
1529             DLOG("matching: %p / %s\n", current->con, current->con->name);
1530             con_toggle_layout(current->con, toggle_mode);
1531         }
1532     }
1533
1534     cmd_output->needs_tree_render = true;
1535     // XXX: default reply for now, make this a better reply
1536     ysuccess(true);
1537 }
1538
1539 /*
1540  * Implementation of 'exit'.
1541  *
1542  */
1543 void cmd_exit(I3_CMD) {
1544     LOG("Exiting due to user command.\n");
1545 #ifdef I3_ASAN_ENABLED
1546     __lsan_do_leak_check();
1547 #endif
1548     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1549     unlink(config.ipc_socket_path);
1550     xcb_disconnect(conn);
1551     exit(0);
1552
1553     /* unreached */
1554 }
1555
1556 /*
1557  * Implementation of 'reload'.
1558  *
1559  */
1560 void cmd_reload(I3_CMD) {
1561     LOG("reloading\n");
1562     kill_nagbar(&config_error_nagbar_pid, false);
1563     kill_nagbar(&command_error_nagbar_pid, false);
1564     load_configuration(conn, NULL, true);
1565     x_set_i3_atoms();
1566     /* Send an IPC event just in case the ws names have changed */
1567     ipc_send_workspace_event("reload", NULL, NULL);
1568     /* Send an update event for the barconfig just in case it has changed */
1569     update_barconfig();
1570
1571     // XXX: default reply for now, make this a better reply
1572     ysuccess(true);
1573 }
1574
1575 /*
1576  * Implementation of 'restart'.
1577  *
1578  */
1579 void cmd_restart(I3_CMD) {
1580     LOG("restarting i3\n");
1581     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1582     unlink(config.ipc_socket_path);
1583     /* We need to call this manually since atexit handlers don’t get called
1584      * when exec()ing */
1585     purge_zerobyte_logfile();
1586     i3_restart(false);
1587
1588     // XXX: default reply for now, make this a better reply
1589     ysuccess(true);
1590 }
1591
1592 /*
1593  * Implementation of 'open'.
1594  *
1595  */
1596 void cmd_open(I3_CMD) {
1597     LOG("opening new container\n");
1598     Con *con = tree_open_con(NULL, NULL);
1599     con->layout = L_SPLITH;
1600     con_focus(con);
1601
1602     y(map_open);
1603     ystr("success");
1604     y(bool, true);
1605     ystr("id");
1606     y(integer, (uintptr_t)con);
1607     y(map_close);
1608
1609     cmd_output->needs_tree_render = true;
1610 }
1611
1612 /*
1613  * Implementation of 'focus output <output>'.
1614  *
1615  */
1616 void cmd_focus_output(I3_CMD, const char *name) {
1617     owindow *current;
1618
1619     DLOG("name = %s\n", name);
1620
1621     HANDLE_EMPTY_MATCH;
1622
1623     /* get the output */
1624     Output *current_output = NULL;
1625     Output *output;
1626
1627     TAILQ_FOREACH(current, &owindows, owindows)
1628     current_output = get_output_for_con(current->con);
1629     assert(current_output != NULL);
1630
1631     output = get_output_from_string(current_output, name);
1632
1633     if (!output) {
1634         LOG("No such output found.\n");
1635         ysuccess(false);
1636         return;
1637     }
1638
1639     /* get visible workspace on output */
1640     Con *ws = NULL;
1641     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1642     if (!ws) {
1643         ysuccess(false);
1644         return;
1645     }
1646
1647     workspace_show(ws);
1648
1649     cmd_output->needs_tree_render = true;
1650     // XXX: default reply for now, make this a better reply
1651     ysuccess(true);
1652 }
1653
1654 /*
1655  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1656  *
1657  */
1658 void cmd_move_window_to_position(I3_CMD, const char *method, long x, long y) {
1659     bool has_error = false;
1660
1661     owindow *current;
1662     HANDLE_EMPTY_MATCH;
1663
1664     TAILQ_FOREACH(current, &owindows, owindows) {
1665         if (!con_is_floating(current->con)) {
1666             ELOG("Cannot change position. The window/container is not floating\n");
1667
1668             if (!has_error) {
1669                 yerror("Cannot change position of a window/container because it is not floating.");
1670                 has_error = true;
1671             }
1672
1673             continue;
1674         }
1675
1676         if (strcmp(method, "absolute") == 0) {
1677             current->con->parent->rect.x = x;
1678             current->con->parent->rect.y = y;
1679
1680             DLOG("moving to absolute position %ld %ld\n", x, y);
1681             floating_maybe_reassign_ws(current->con->parent);
1682             cmd_output->needs_tree_render = true;
1683         }
1684
1685         if (strcmp(method, "position") == 0) {
1686             Rect newrect = current->con->parent->rect;
1687
1688             DLOG("moving to position %ld %ld\n", x, y);
1689             newrect.x = x;
1690             newrect.y = y;
1691
1692             floating_reposition(current->con->parent, newrect);
1693         }
1694     }
1695
1696     // XXX: default reply for now, make this a better reply
1697     if (!has_error)
1698         ysuccess(true);
1699 }
1700
1701 /*
1702  * Implementation of 'move [window|container] [to] [absolute] position center
1703  *
1704  */
1705 void cmd_move_window_to_center(I3_CMD, const char *method) {
1706     bool has_error = false;
1707     HANDLE_EMPTY_MATCH;
1708
1709     owindow *current;
1710     TAILQ_FOREACH(current, &owindows, owindows) {
1711         Con *floating_con = con_inside_floating(current->con);
1712         if (floating_con == NULL) {
1713             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1714                  current->con, current->con->name);
1715
1716             if (!has_error) {
1717                 yerror("Cannot change position of a window/container because it is not floating.");
1718                 has_error = true;
1719             }
1720
1721             continue;
1722         }
1723
1724         if (strcmp(method, "absolute") == 0) {
1725             DLOG("moving to absolute center\n");
1726             floating_center(floating_con, croot->rect);
1727
1728             floating_maybe_reassign_ws(floating_con);
1729             cmd_output->needs_tree_render = true;
1730         }
1731
1732         if (strcmp(method, "position") == 0) {
1733             DLOG("moving to center\n");
1734             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1735
1736             cmd_output->needs_tree_render = true;
1737         }
1738     }
1739
1740     // XXX: default reply for now, make this a better reply
1741     if (!has_error)
1742         ysuccess(true);
1743 }
1744
1745 /*
1746  * Implementation of 'move [window|container] [to] position mouse'
1747  *
1748  */
1749 void cmd_move_window_to_mouse(I3_CMD) {
1750     HANDLE_EMPTY_MATCH;
1751
1752     owindow *current;
1753     TAILQ_FOREACH(current, &owindows, owindows) {
1754         Con *floating_con = con_inside_floating(current->con);
1755         if (floating_con == NULL) {
1756             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1757                  current->con, current->con->name);
1758             continue;
1759         }
1760
1761         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1762         floating_move_to_pointer(floating_con);
1763     }
1764
1765     cmd_output->needs_tree_render = true;
1766     ysuccess(true);
1767 }
1768
1769 /*
1770  * Implementation of 'move scratchpad'.
1771  *
1772  */
1773 void cmd_move_scratchpad(I3_CMD) {
1774     DLOG("should move window to scratchpad\n");
1775     owindow *current;
1776
1777     HANDLE_EMPTY_MATCH;
1778
1779     TAILQ_FOREACH(current, &owindows, owindows) {
1780         DLOG("matching: %p / %s\n", current->con, current->con->name);
1781         scratchpad_move(current->con);
1782     }
1783
1784     cmd_output->needs_tree_render = true;
1785     // XXX: default reply for now, make this a better reply
1786     ysuccess(true);
1787 }
1788
1789 /*
1790  * Implementation of 'scratchpad show'.
1791  *
1792  */
1793 void cmd_scratchpad_show(I3_CMD) {
1794     DLOG("should show scratchpad window\n");
1795     owindow *current;
1796
1797     if (match_is_empty(current_match)) {
1798         scratchpad_show(NULL);
1799     } else {
1800         TAILQ_FOREACH(current, &owindows, owindows) {
1801             DLOG("matching: %p / %s\n", current->con, current->con->name);
1802             scratchpad_show(current->con);
1803         }
1804     }
1805
1806     cmd_output->needs_tree_render = true;
1807     // XXX: default reply for now, make this a better reply
1808     ysuccess(true);
1809 }
1810
1811 /*
1812  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1813  *
1814  */
1815 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1816     HANDLE_EMPTY_MATCH;
1817
1818     owindow *match = TAILQ_FIRST(&owindows);
1819     if (match == NULL) {
1820         DLOG("No match found for swapping.\n");
1821         return;
1822     }
1823
1824     Con *con;
1825     if (strcmp(mode, "id") == 0) {
1826         long target;
1827         if (!parse_long(arg, &target, 0)) {
1828             yerror("Failed to parse %s into a window id.\n", arg);
1829             return;
1830         }
1831
1832         con = con_by_window_id(target);
1833     } else if (strcmp(mode, "con_id") == 0) {
1834         long target;
1835         if (!parse_long(arg, &target, 0)) {
1836             yerror("Failed to parse %s into a container id.\n", arg);
1837             return;
1838         }
1839
1840         con = con_by_con_id(target);
1841     } else if (strcmp(mode, "mark") == 0) {
1842         con = con_by_mark(arg);
1843     } else {
1844         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1845         return;
1846     }
1847
1848     if (con == NULL) {
1849         yerror("Could not find container for %s = %s\n", mode, arg);
1850         return;
1851     }
1852
1853     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1854         DLOG("More than one container matched the swap command, only using the first one.");
1855     }
1856
1857     if (match->con == NULL) {
1858         DLOG("Match %p has no container.\n", match);
1859         ysuccess(false);
1860         return;
1861     }
1862
1863     DLOG("Swapping %p with %p.\n", match->con, con);
1864     bool result = con_swap(match->con, con);
1865
1866     cmd_output->needs_tree_render = true;
1867     ysuccess(result);
1868 }
1869
1870 /*
1871  * Implementation of 'title_format <format>'
1872  *
1873  */
1874 void cmd_title_format(I3_CMD, const char *format) {
1875     DLOG("setting title_format to \"%s\"\n", format);
1876     HANDLE_EMPTY_MATCH;
1877
1878     owindow *current;
1879     TAILQ_FOREACH(current, &owindows, owindows) {
1880         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1881         FREE(current->con->title_format);
1882
1883         /* If we only display the title without anything else, we can skip the parsing step,
1884          * so we remove the title format altogether. */
1885         if (strcasecmp(format, "%title") != 0) {
1886             current->con->title_format = sstrdup(format);
1887
1888             if (current->con->window != NULL) {
1889                 i3String *formatted_title = con_parse_title_format(current->con);
1890                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1891                 I3STRING_FREE(formatted_title);
1892             }
1893         } else {
1894             if (current->con->window != NULL) {
1895                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1896                 ewmh_update_visible_name(current->con->window->id, NULL);
1897             }
1898         }
1899
1900         if (current->con->window != NULL) {
1901             /* Make sure the window title is redrawn immediately. */
1902             current->con->window->name_x_changed = true;
1903         } else {
1904             /* For windowless containers we also need to force the redrawing. */
1905             FREE(current->con->deco_render_params);
1906         }
1907     }
1908
1909     cmd_output->needs_tree_render = true;
1910     ysuccess(true);
1911 }
1912
1913 /*
1914  * Implementation of 'rename workspace [<name>] to <name>'
1915  *
1916  */
1917 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1918     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1919         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1920         ysuccess(false);
1921         return;
1922     }
1923     if (old_name) {
1924         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1925     } else {
1926         LOG("Renaming current workspace to \"%s\"\n", new_name);
1927     }
1928
1929     Con *output, *workspace = NULL;
1930     if (old_name) {
1931         TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
1932         GREP_FIRST(workspace, output_get_content(output),
1933                    !strcasecmp(child->name, old_name));
1934     } else {
1935         workspace = con_get_workspace(focused);
1936         old_name = workspace->name;
1937     }
1938
1939     if (!workspace) {
1940         yerror("Old workspace \"%s\" not found", old_name);
1941         return;
1942     }
1943
1944     Con *check_dest = NULL;
1945     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
1946     GREP_FIRST(check_dest, output_get_content(output),
1947                !strcasecmp(child->name, new_name));
1948
1949     /* If check_dest == workspace, the user might be changing the case of the
1950      * workspace, or it might just be a no-op. */
1951     if (check_dest != NULL && check_dest != workspace) {
1952         yerror("New workspace \"%s\" already exists", new_name);
1953         return;
1954     }
1955
1956     /* Change the name and try to parse it as a number. */
1957     /* old_name might refer to workspace->name, so copy it before free()ing */
1958     char *old_name_copy = sstrdup(old_name);
1959     FREE(workspace->name);
1960     workspace->name = sstrdup(new_name);
1961
1962     workspace->num = ws_name_to_number(new_name);
1963     LOG("num = %d\n", workspace->num);
1964
1965     /* By re-attaching, the sort order will be correct afterwards. */
1966     Con *previously_focused = focused;
1967     Con *parent = workspace->parent;
1968     con_detach(workspace);
1969     con_attach(workspace, parent, false);
1970
1971     /* Move the workspace to the correct output if it has an assignment */
1972     struct Workspace_Assignment *assignment = NULL;
1973     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
1974         if (assignment->output == NULL)
1975             continue;
1976         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
1977             continue;
1978         }
1979
1980         workspace_move_to_output(workspace, assignment->output);
1981
1982         if (previously_focused)
1983             workspace_show(con_get_workspace(previously_focused));
1984
1985         break;
1986     }
1987
1988     /* Restore the previous focus since con_attach messes with the focus. */
1989     con_focus(previously_focused);
1990
1991     cmd_output->needs_tree_render = true;
1992     ysuccess(true);
1993
1994     ipc_send_workspace_event("rename", workspace, NULL);
1995     ewmh_update_desktop_names();
1996     ewmh_update_desktop_viewport();
1997     ewmh_update_current_desktop();
1998
1999     startup_sequence_rename_workspace(old_name_copy, new_name);
2000     free(old_name_copy);
2001 }
2002
2003 /*
2004  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2005  *
2006  */
2007 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2008     int mode = M_DOCK;
2009     bool toggle = false;
2010     if (strcmp(bar_mode, "dock") == 0)
2011         mode = M_DOCK;
2012     else if (strcmp(bar_mode, "hide") == 0)
2013         mode = M_HIDE;
2014     else if (strcmp(bar_mode, "invisible") == 0)
2015         mode = M_INVISIBLE;
2016     else if (strcmp(bar_mode, "toggle") == 0)
2017         toggle = true;
2018     else {
2019         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2020         return false;
2021     }
2022
2023     bool changed_sth = false;
2024     Barconfig *current = NULL;
2025     TAILQ_FOREACH(current, &barconfigs, configs) {
2026         if (bar_id && strcmp(current->id, bar_id) != 0)
2027             continue;
2028
2029         if (toggle)
2030             mode = (current->mode + 1) % 2;
2031
2032         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2033         current->mode = mode;
2034         changed_sth = true;
2035
2036         if (bar_id)
2037             break;
2038     }
2039
2040     if (bar_id && !changed_sth) {
2041         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2042         return false;
2043     }
2044
2045     return true;
2046 }
2047
2048 /*
2049  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2050  *
2051  */
2052 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2053     int hidden_state = S_SHOW;
2054     bool toggle = false;
2055     if (strcmp(bar_hidden_state, "hide") == 0)
2056         hidden_state = S_HIDE;
2057     else if (strcmp(bar_hidden_state, "show") == 0)
2058         hidden_state = S_SHOW;
2059     else if (strcmp(bar_hidden_state, "toggle") == 0)
2060         toggle = true;
2061     else {
2062         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2063         return false;
2064     }
2065
2066     bool changed_sth = false;
2067     Barconfig *current = NULL;
2068     TAILQ_FOREACH(current, &barconfigs, configs) {
2069         if (bar_id && strcmp(current->id, bar_id) != 0)
2070             continue;
2071
2072         if (toggle)
2073             hidden_state = (current->hidden_state + 1) % 2;
2074
2075         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2076         current->hidden_state = hidden_state;
2077         changed_sth = true;
2078
2079         if (bar_id)
2080             break;
2081     }
2082
2083     if (bar_id && !changed_sth) {
2084         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2085         return false;
2086     }
2087
2088     return true;
2089 }
2090
2091 /*
2092  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2093  *
2094  */
2095 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2096     bool ret;
2097     if (strcmp(bar_type, "mode") == 0)
2098         ret = cmd_bar_mode(bar_value, bar_id);
2099     else if (strcmp(bar_type, "hidden_state") == 0)
2100         ret = cmd_bar_hidden_state(bar_value, bar_id);
2101     else {
2102         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2103         ret = false;
2104     }
2105
2106     ysuccess(ret);
2107     if (!ret)
2108         return;
2109
2110     update_barconfig();
2111 }
2112
2113 /*
2114  * Implementation of 'shmlog <size>|toggle|on|off'
2115  *
2116  */
2117 void cmd_shmlog(I3_CMD, const char *argument) {
2118     if (!strcmp(argument, "toggle"))
2119         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2120         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2121     else if (!strcmp(argument, "on"))
2122         shmlog_size = default_shmlog_size;
2123     else if (!strcmp(argument, "off"))
2124         shmlog_size = 0;
2125     else {
2126         /* If shm logging now, restart logging with the new size. */
2127         if (shmlog_size > 0) {
2128             shmlog_size = 0;
2129             LOG("Restarting shm logging...\n");
2130             init_logging();
2131         }
2132         shmlog_size = atoi(argument);
2133         /* Make a weakly attempt at ensuring the argument is valid. */
2134         if (shmlog_size <= 0)
2135             shmlog_size = default_shmlog_size;
2136     }
2137     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2138     init_logging();
2139     update_shmlog_atom();
2140     // XXX: default reply for now, make this a better reply
2141     ysuccess(true);
2142 }
2143
2144 /*
2145  * Implementation of 'debuglog toggle|on|off'
2146  *
2147  */
2148 void cmd_debuglog(I3_CMD, const char *argument) {
2149     bool logging = get_debug_logging();
2150     if (!strcmp(argument, "toggle")) {
2151         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2152         set_debug_logging(!logging);
2153     } else if (!strcmp(argument, "on") && !logging) {
2154         LOG("Enabling debug logging\n");
2155         set_debug_logging(true);
2156     } else if (!strcmp(argument, "off") && logging) {
2157         LOG("Disabling debug logging\n");
2158         set_debug_logging(false);
2159     }
2160     // XXX: default reply for now, make this a better reply
2161     ysuccess(true);
2162 }