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 #define CHECK_MOVE_CON_TO_WORKSPACE                                                          \
 273     do {                                                                                     \
 274         HANDLE_EMPTY_MATCH;                                                                  \
 275         if (TAILQ_EMPTY(&owindows)) {                                                        \
 276             yerror("Nothing to move: specified criteria don't match any window");            \
 277             return;                                                                          \
 278         } else {                                                                             \
 279             bool found = false;                                                              \
 280             owindow *current = TAILQ_FIRST(&owindows);                                       \
 281             while (current) {                                                                \
 282                 owindow *next = TAILQ_NEXT(current, owindows);                               \
 283                                                                                              \
 284                 if (current->con->type == CT_WORKSPACE && !con_has_children(current->con)) { \
 285                     TAILQ_REMOVE(&owindows, current, owindows);                              \
 286                 } else {                                                                     \
 287                     found = true;                                                            \
 288                 }                                                                            \
 289                                                                                              \
 290                 current = next;                                                              \
 291             }                                                                                \
 292             if (!found) {                                                                    \
 293                 yerror("Nothing to move: workspace empty");                                  \
 294                 return;                                                                      \
 295             }                                                                                \
 296         }                                                                                    \
 297     } while (0)
 298
 299 /*
 300  * Implementation of 'move [window|container] [to] workspace
 301  * next|prev|next_on_output|prev_on_output|current'.
 302  *
 303  */
 304 void cmd_move_con_to_workspace(I3_CMD, const char *which) {
 305     DLOG("which=%s\n", which);
 306
 307     CHECK_MOVE_CON_TO_WORKSPACE;
 308
 309     /* get the workspace */
 310     Con *ws;
 311     if (strcmp(which, "next") == 0)
 312         ws = workspace_next();
 313     else if (strcmp(which, "prev") == 0)
 314         ws = workspace_prev();
 315     else if (strcmp(which, "next_on_output") == 0)
 316         ws = workspace_next_on_output();
 317     else if (strcmp(which, "prev_on_output") == 0)
 318         ws = workspace_prev_on_output();
 319     else if (strcmp(which, "current") == 0)
 320         ws = con_get_workspace(focused);
 321     else {
 322         yerror("BUG: called with which=%s", which);
 323         return;
 324     }
 325
 326     move_matches_to_workspace(ws);
 327
 328     cmd_output->needs_tree_render = true;
 329     // XXX: default reply for now, make this a better reply
 330     ysuccess(true);
 331 }
 332
 333 /*
 334  * Implementation of 'move [window|container] [to] workspace back_and_forth'.
 335  *
 336  */
 337 void cmd_move_con_to_workspace_back_and_forth(I3_CMD) {
 338     Con *ws = workspace_back_and_forth_get();
 339     if (ws == NULL) {
 340         yerror("No workspace was previously active.");
 341         return;
 342     }
 343
 344     HANDLE_EMPTY_MATCH;
 345
 346     move_matches_to_workspace(ws);
 347
 348     cmd_output->needs_tree_render = true;
 349     // XXX: default reply for now, make this a better reply
 350     ysuccess(true);
 351 }
 352
 353 /*
 354  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace <name>'.
 355  *
 356  */
 357 void cmd_move_con_to_workspace_name(I3_CMD, const char *name, const char *no_auto_back_and_forth) {
 358     if (strncasecmp(name, "__", strlen("__")) == 0) {
 359         yerror("You cannot move containers to i3-internal workspaces (\"%s\").", name);
 360         return;
 361     }
 362
 363     CHECK_MOVE_CON_TO_WORKSPACE;
 364
 365     LOG("should move window to workspace %s\n", name);
 366     /* get the workspace */
 367     Con *ws = workspace_get(name, NULL);
 368
 369     if (no_auto_back_and_forth == NULL) {
 370         ws = maybe_auto_back_and_forth_workspace(ws);
 371     }
 372
 373     move_matches_to_workspace(ws);
 374
 375     cmd_output->needs_tree_render = true;
 376     // XXX: default reply for now, make this a better reply
 377     ysuccess(true);
 378 }
 379
 380 /*
 381  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace number <name>'.
 382  *
 383  */
 384 void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *no_auto_back_and_forth) {
 385     CHECK_MOVE_CON_TO_WORKSPACE;
 386
 387     LOG("should move window to workspace %s\n", which);
 388
 389     long parsed_num = ws_name_to_number(which);
 390     if (parsed_num == -1) {
 391         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 392         yerror("Could not parse number \"%s\"", which);
 393         return;
 394     }
 395
 396     Con *ws = get_existing_workspace_by_num(parsed_num);
 397     if (!ws) {
 398         ws = workspace_get(which, NULL);
 399     }
 400
 401     if (no_auto_back_and_forth == NULL) {
 402         ws = maybe_auto_back_and_forth_workspace(ws);
 403     }
 404
 405     move_matches_to_workspace(ws);
 406
 407     cmd_output->needs_tree_render = true;
 408     // XXX: default reply for now, make this a better reply
 409     ysuccess(true);
 410 }
 411
 412 /*
 413  * Convert a string direction ("left", "right", etc.) to a direction_t. Assumes
 414  * valid direction string.
 415  */
 416 static direction_t parse_direction(const char *str) {
 417     if (strcmp(str, "left") == 0) {
 418         return D_LEFT;
 419     } else if (strcmp(str, "right") == 0) {
 420         return D_RIGHT;
 421     } else if (strcmp(str, "up") == 0) {
 422         return D_UP;
 423     } else if (strcmp(str, "down") == 0) {
 424         return D_DOWN;
 425     } else {
 426         ELOG("Invalid direction. This is a parser bug.\n");
 427         assert(false);
 428     }
 429 }
 430
 431 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction_str, Con *floating_con, int px) {
 432     Rect old_rect = floating_con->rect;
 433     Con *focused_con = con_descend_focused(floating_con);
 434
 435     direction_t direction;
 436     if (strcmp(direction_str, "height") == 0) {
 437         direction = D_DOWN;
 438     } else if (strcmp(direction_str, "width") == 0) {
 439         direction = D_RIGHT;
 440     } else {
 441         direction = parse_direction(direction_str);
 442     }
 443     orientation_t orientation = orientation_from_direction(direction);
 444
 445     /* ensure that resize will take place even if pixel increment is smaller than
 446      * height increment or width increment.
 447      * fixes #1011 */
 448     const i3Window *window = focused_con->window;
 449     if (window != NULL) {
 450         if (orientation == VERT) {
 451             if (px < 0) {
 452                 px = (-px < window->height_increment) ? -window->height_increment : px;
 453             } else {
 454                 px = (px < window->height_increment) ? window->height_increment : px;
 455             }
 456         } else {
 457             if (px < 0) {
 458                 px = (-px < window->width_increment) ? -window->width_increment : px;
 459             } else {
 460                 px = (px < window->width_increment) ? window->width_increment : px;
 461             }
 462         }
 463     }
 464
 465     if (orientation == VERT) {
 466         floating_con->rect.height += px;
 467     } else {
 468         floating_con->rect.width += px;
 469     }
 470     floating_check_size(floating_con, orientation == VERT);
 471
 472     /* Did we actually resize anything or did the size constraints prevent us?
 473      * If we could not resize, exit now to not move the window. */
 474     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0) {
 475         return;
 476     }
 477
 478     if (direction == D_UP) {
 479         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 480     } else if (direction == D_LEFT) {
 481         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 482     }
 483
 484     /* If this is a scratchpad window, don't auto center it from now on. */
 485     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH) {
 486         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 487     }
 488 }
 489
 490 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *direction, int px, int ppt) {
 491     Con *second = NULL;
 492     Con *first = current;
 493     direction_t search_direction = parse_direction(direction);
 494
 495     bool res = resize_find_tiling_participants(&first, &second, search_direction, false);
 496     if (!res) {
 497         yerror("No second container found in this direction.");
 498         return false;
 499     }
 500
 501     if (ppt) {
 502         /* For backwards compatibility, 'X px or Y ppt' means that ppt is
 503          * preferred. */
 504         px = 0;
 505     }
 506     return resize_neighboring_cons(first, second, px, ppt);
 507 }
 508
 509 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *direction, int px, double ppt) {
 510     LOG("width/height resize\n");
 511
 512     /* get the appropriate current container (skip stacked/tabbed cons) */
 513     Con *dummy = NULL;
 514     direction_t search_direction = (strcmp(direction, "width") == 0 ? D_LEFT : D_DOWN);
 515     bool search_result = resize_find_tiling_participants(&current, &dummy, search_direction, true);
 516     if (search_result == false) {
 517         yerror("Failed to find appropriate tiling containers for resize operation");
 518         return false;
 519     }
 520
 521     /* get the default percentage */
 522     int children = con_num_children(current->parent);
 523     LOG("ins. %d children\n", children);
 524     double percentage = 1.0 / children;
 525     LOG("default percentage = %f\n", percentage);
 526
 527     /* Ensure all the other children have a percentage set. */
 528     Con *child;
 529     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 530         LOG("child->percent = %f (child %p)\n", child->percent, child);
 531         if (child->percent == 0.0)
 532             child->percent = percentage;
 533     }
 534
 535     double new_current_percent;
 536     double subtract_percent;
 537     if (ppt != 0.0) {
 538         new_current_percent = current->percent + ppt;
 539     } else {
 540         /* Convert px change to change in percentages */
 541         ppt = (double)px / (double)con_rect_size_in_orientation(current->parent);
 542         new_current_percent = current->percent + ppt;
 543     }
 544     subtract_percent = ppt / (children - 1);
 545     if (ppt < 0.0 && new_current_percent < percent_for_1px(current)) {
 546         yerror("Not resizing, container would end with less than 1px");
 547         return false;
 548     }
 549
 550     LOG("new_current_percent = %f\n", new_current_percent);
 551     LOG("subtract_percent = %f\n", subtract_percent);
 552     /* Ensure that the new percentages are positive. */
 553     if (subtract_percent >= 0.0) {
 554         TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 555             if (child == current) {
 556                 continue;
 557             }
 558             if (child->percent - subtract_percent < percent_for_1px(child)) {
 559                 yerror("Not resizing, already at minimum size (child %p would end up with a size of %.f", child, child->percent - subtract_percent);
 560                 return false;
 561             }
 562         }
 563     }
 564
 565     current->percent = new_current_percent;
 566     LOG("current->percent after = %f\n", current->percent);
 567
 568     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 569         if (child == current)
 570             continue;
 571         child->percent -= subtract_percent;
 572         LOG("child->percent after (%p) = %f\n", child, child->percent);
 573     }
 574
 575     return true;
 576 }
 577
 578 /*
 579  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 580  *
 581  */
 582 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 583     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 584     if (strcmp(way, "shrink") == 0) {
 585         resize_px *= -1;
 586         resize_ppt *= -1;
 587     }
 588
 589     HANDLE_EMPTY_MATCH;
 590
 591     owindow *current;
 592     TAILQ_FOREACH(current, &owindows, owindows) {
 593         /* Don't handle dock windows (issue #1201) */
 594         if (current->con->window && current->con->window->dock) {
 595             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 596             continue;
 597         }
 598
 599         Con *floating_con;
 600         if ((floating_con = con_inside_floating(current->con))) {
 601             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 602         } else {
 603             if (strcmp(direction, "width") == 0 ||
 604                 strcmp(direction, "height") == 0) {
 605                 const double ppt = (double)resize_ppt / 100.0;
 606                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 607                                                     current->con, direction,
 608                                                     resize_px, ppt))
 609                     return;
 610             } else {
 611                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 612                                                  current->con, direction,
 613                                                  resize_px, resize_ppt))
 614                     return;
 615             }
 616         }
 617     }
 618
 619     cmd_output->needs_tree_render = true;
 620     // XXX: default reply for now, make this a better reply
 621     ysuccess(true);
 622 }
 623
 624 static bool resize_set_tiling(I3_CMD, Con *target, orientation_t resize_orientation, bool is_ppt, long target_size) {
 625     direction_t search_direction;
 626     char *mode;
 627     if (resize_orientation == HORIZ) {
 628         search_direction = D_LEFT;
 629         mode = "width";
 630     } else {
 631         search_direction = D_DOWN;
 632         mode = "height";
 633     }
 634
 635     /* Get the appropriate current container (skip stacked/tabbed cons) */
 636     Con *dummy;
 637     resize_find_tiling_participants(&target, &dummy, search_direction, true);
 638
 639     /* Calculate new size for the target container */
 640     double ppt = 0.0;
 641     int px = 0;
 642     if (is_ppt) {
 643         ppt = (double)target_size / 100.0 - target->percent;
 644     } else {
 645         px = target_size - (resize_orientation == HORIZ ? target->rect.width : target->rect.height);
 646     }
 647
 648     /* Perform resizing and report failure if not possible */
 649     return cmd_resize_tiling_width_height(current_match, cmd_output,
 650                                           target, mode, px, ppt);
 651 }
 652
 653 /*
 654  * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
 655  *
 656  */
 657 void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
 658     DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
 659     if (cwidth < 0 || cheight < 0) {
 660         ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
 661         return;
 662     }
 663
 664     HANDLE_EMPTY_MATCH;
 665
 666     owindow *current;
 667     bool success = true;
 668     TAILQ_FOREACH(current, &owindows, owindows) {
 669         Con *floating_con;
 670         if ((floating_con = con_inside_floating(current->con))) {
 671             Con *output = con_get_output(floating_con);
 672             if (cwidth == 0) {
 673                 cwidth = floating_con->rect.width;
 674             } else if (mode_width && strcmp(mode_width, "ppt") == 0) {
 675                 cwidth = output->rect.width * ((double)cwidth / 100.0);
 676             }
 677             if (cheight == 0) {
 678                 cheight = floating_con->rect.height;
 679             } else if (mode_height && strcmp(mode_height, "ppt") == 0) {
 680                 cheight = output->rect.height * ((double)cheight / 100.0);
 681             }
 682             floating_resize(floating_con, cwidth, cheight);
 683         } else {
 684             if (current->con->window && current->con->window->dock) {
 685                 DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 686                 continue;
 687             }
 688
 689             if (cwidth > 0) {
 690                 bool is_ppt = mode_width && strcmp(mode_width, "ppt") == 0;
 691                 success &= resize_set_tiling(current_match, cmd_output, current->con,
 692                                              HORIZ, is_ppt, cwidth);
 693             }
 694             if (cheight > 0) {
 695                 bool is_ppt = mode_height && strcmp(mode_height, "ppt") == 0;
 696                 success &= resize_set_tiling(current_match, cmd_output, current->con,
 697                                              VERT, is_ppt, cheight);
 698             }
 699         }
 700     }
 701
 702     cmd_output->needs_tree_render = true;
 703     ysuccess(success);
 704 }
 705
 706 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 707     if (border_style == BS_NONE) {
 708         return 0;
 709     }
 710     if (border_width >= 0) {
 711         return logical_px(border_width);
 712     }
 713
 714     const bool is_floating = con_inside_floating(con) != NULL;
 715     /* Load the configured defaults. */
 716     if (is_floating && border_style == config.default_floating_border) {
 717         return config.default_floating_border_width;
 718     } else if (!is_floating && border_style == config.default_border) {
 719         return config.default_border_width;
 720     } else {
 721         /* Use some hardcoded values. */
 722         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 723     }
 724 }
 725
 726 /*
 727  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 728  *
 729  */
 730 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 731     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 732     owindow *current;
 733
 734     HANDLE_EMPTY_MATCH;
 735
 736     TAILQ_FOREACH(current, &owindows, owindows) {
 737         DLOG("matching: %p / %s\n", current->con, current->con->name);
 738
 739         border_style_t border_style;
 740         if (strcmp(border_style_str, "toggle") == 0) {
 741             border_style = (current->con->border_style + 1) % 3;
 742         } else if (strcmp(border_style_str, "normal") == 0) {
 743             border_style = BS_NORMAL;
 744         } else if (strcmp(border_style_str, "pixel") == 0) {
 745             border_style = BS_PIXEL;
 746         } else if (strcmp(border_style_str, "none") == 0) {
 747             border_style = BS_NONE;
 748         } else {
 749             yerror("BUG: called with border_style=%s", border_style_str);
 750             return;
 751         }
 752
 753         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 754         con_set_border_style(current->con, border_style, con_border_width);
 755     }
 756
 757     cmd_output->needs_tree_render = true;
 758     ysuccess(true);
 759 }
 760
 761 /*
 762  * Implementation of 'nop <comment>'.
 763  *
 764  */
 765 void cmd_nop(I3_CMD, const char *comment) {
 766     LOG("-------------------------------------------------\n");
 767     LOG("  NOP: %s\n", comment);
 768     LOG("-------------------------------------------------\n");
 769     ysuccess(true);
 770 }
 771
 772 /*
 773  * Implementation of 'append_layout <path>'.
 774  *
 775  */
 776 void cmd_append_layout(I3_CMD, const char *cpath) {
 777     LOG("Appending layout \"%s\"\n", cpath);
 778
 779     /* Make sure we allow paths like '~/.i3/layout.json' */
 780     char *path = resolve_tilde(cpath);
 781
 782     char *buf = NULL;
 783     ssize_t len;
 784     if ((len = slurp(path, &buf)) < 0) {
 785         /* slurp already logged an error. */
 786         goto out;
 787     }
 788
 789     if (!json_validate(buf, len)) {
 790         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 791         yerror("Could not parse \"%s\" as JSON.", path);
 792         goto out;
 793     }
 794
 795     json_content_t content = json_determine_content(buf, len);
 796     LOG("JSON content = %d\n", content);
 797     if (content == JSON_CONTENT_UNKNOWN) {
 798         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 799         yerror("Could not determine the contents of \"%s\".", path);
 800         goto out;
 801     }
 802
 803     Con *parent = focused;
 804     if (content == JSON_CONTENT_WORKSPACE) {
 805         parent = output_get_content(con_get_output(parent));
 806     } else {
 807         /* We need to append the layout to a split container, since a leaf
 808          * container must not have any children (by definition).
 809          * Note that we explicitly check for workspaces, since they are okay for
 810          * this purpose, but con_accepts_window() returns false for workspaces. */
 811         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 812             parent = parent->parent;
 813     }
 814     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 815     char *errormsg = NULL;
 816     tree_append_json(parent, buf, len, &errormsg);
 817     if (errormsg != NULL) {
 818         yerror(errormsg);
 819         free(errormsg);
 820         /* Note that we continue executing since tree_append_json() has
 821          * side-effects — user-provided layouts can be partly valid, partly
 822          * invalid, leading to half of the placeholder containers being
 823          * created. */
 824     } else {
 825         ysuccess(true);
 826     }
 827
 828     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 829     // false); should be enough, but when sending 'workspace 4; append_layout
 830     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 831     // is not executed yet and will be batched with append_layout’s
 832     // needs_tree_render after the parser finished. We should check if that is
 833     // necessary at all.
 834     render_con(croot, false);
 835
 836     restore_open_placeholder_windows(parent);
 837
 838     if (content == JSON_CONTENT_WORKSPACE)
 839         ipc_send_workspace_event("restored", parent, NULL);
 840
 841     cmd_output->needs_tree_render = true;
 842 out:
 843     free(path);
 844     free(buf);
 845 }
 846
 847 /*
 848  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 849  *
 850  */
 851 void cmd_workspace(I3_CMD, const char *which) {
 852     Con *ws;
 853
 854     DLOG("which=%s\n", which);
 855
 856     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 857         yerror("Cannot switch workspace while in global fullscreen");
 858         return;
 859     }
 860
 861     if (strcmp(which, "next") == 0)
 862         ws = workspace_next();
 863     else if (strcmp(which, "prev") == 0)
 864         ws = workspace_prev();
 865     else if (strcmp(which, "next_on_output") == 0)
 866         ws = workspace_next_on_output();
 867     else if (strcmp(which, "prev_on_output") == 0)
 868         ws = workspace_prev_on_output();
 869     else {
 870         yerror("BUG: called with which=%s", which);
 871         return;
 872     }
 873
 874     workspace_show(ws);
 875
 876     cmd_output->needs_tree_render = true;
 877     // XXX: default reply for now, make this a better reply
 878     ysuccess(true);
 879 }
 880
 881 /*
 882  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 883  *
 884  */
 885 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 886     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 887
 888     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 889         yerror("Cannot switch workspace while in global fullscreen");
 890         return;
 891     }
 892
 893     long parsed_num = ws_name_to_number(which);
 894     if (parsed_num == -1) {
 895         yerror("Could not parse initial part of \"%s\" as a number.", which);
 896         return;
 897     }
 898
 899     Con *workspace = get_existing_workspace_by_num(parsed_num);
 900     if (!workspace) {
 901         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 902         ysuccess(true);
 903         workspace_show_by_name(which);
 904         cmd_output->needs_tree_render = true;
 905         return;
 906     }
 907     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 908         ysuccess(true);
 909         return;
 910     }
 911     workspace_show(workspace);
 912
 913     cmd_output->needs_tree_render = true;
 914     // XXX: default reply for now, make this a better reply
 915     ysuccess(true);
 916 }
 917
 918 /*
 919  * Implementation of 'workspace back_and_forth'.
 920  *
 921  */
 922 void cmd_workspace_back_and_forth(I3_CMD) {
 923     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 924         yerror("Cannot switch workspace while in global fullscreen");
 925         return;
 926     }
 927
 928     workspace_back_and_forth();
 929
 930     cmd_output->needs_tree_render = true;
 931     // XXX: default reply for now, make this a better reply
 932     ysuccess(true);
 933 }
 934
 935 /*
 936  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 937  *
 938  */
 939 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 940     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 941
 942     if (strncasecmp(name, "__", strlen("__")) == 0) {
 943         yerror("You cannot switch to the i3-internal workspaces (\"%s\").", name);
 944         return;
 945     }
 946
 947     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 948         yerror("Cannot switch workspace while in global fullscreen");
 949         return;
 950     }
 951
 952     DLOG("should switch to workspace %s\n", name);
 953     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 954         ysuccess(true);
 955         return;
 956     }
 957     workspace_show_by_name(name);
 958
 959     cmd_output->needs_tree_render = true;
 960     // XXX: default reply for now, make this a better reply
 961     ysuccess(true);
 962 }
 963
 964 /*
 965  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 966  *
 967  */
 968 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 969     HANDLE_EMPTY_MATCH;
 970
 971     owindow *current = TAILQ_FIRST(&owindows);
 972     if (current == NULL) {
 973         yerror("Given criteria don't match a window");
 974         return;
 975     }
 976
 977     /* Marks must be unique, i.e., no two windows must have the same mark. */
 978     if (current != TAILQ_LAST(&owindows, owindows_head)) {
 979         yerror("A mark must not be put onto more than one window");
 980         return;
 981     }
 982
 983     DLOG("matching: %p / %s\n", current->con, current->con->name);
 984
 985     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
 986     if (toggle != NULL) {
 987         con_mark_toggle(current->con, mark, mark_mode);
 988     } else {
 989         con_mark(current->con, mark, mark_mode);
 990     }
 991
 992     cmd_output->needs_tree_render = true;
 993     // XXX: default reply for now, make this a better reply
 994     ysuccess(true);
 995 }
 996
 997 /*
 998  * Implementation of 'unmark [mark]'
 999  *
1000  */
1001 void cmd_unmark(I3_CMD, const char *mark) {
1002     if (match_is_empty(current_match)) {
1003         con_unmark(NULL, mark);
1004     } else {
1005         owindow *current;
1006         TAILQ_FOREACH(current, &owindows, owindows) {
1007             con_unmark(current->con, mark);
1008         }
1009     }
1010
1011     cmd_output->needs_tree_render = true;
1012     // XXX: default reply for now, make this a better reply
1013     ysuccess(true);
1014 }
1015
1016 /*
1017  * Implementation of 'mode <string>'.
1018  *
1019  */
1020 void cmd_mode(I3_CMD, const char *mode) {
1021     DLOG("mode=%s\n", mode);
1022     switch_mode(mode);
1023
1024     // XXX: default reply for now, make this a better reply
1025     ysuccess(true);
1026 }
1027
1028 /*
1029  * Implementation of 'move [window|container] [to] output <str>'.
1030  *
1031  */
1032 void cmd_move_con_to_output(I3_CMD, const char *name) {
1033     DLOG("Should move window to output \"%s\".\n", name);
1034     HANDLE_EMPTY_MATCH;
1035
1036     owindow *current;
1037     bool had_error = false;
1038     TAILQ_FOREACH(current, &owindows, owindows) {
1039         DLOG("matching: %p / %s\n", current->con, current->con->name);
1040
1041         had_error |= !con_move_to_output_name(current->con, name, true);
1042     }
1043
1044     cmd_output->needs_tree_render = true;
1045     ysuccess(!had_error);
1046 }
1047
1048 /*
1049  * Implementation of 'move [container|window] [to] mark <str>'.
1050  *
1051  */
1052 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1053     DLOG("moving window to mark \"%s\"\n", mark);
1054
1055     HANDLE_EMPTY_MATCH;
1056
1057     bool result = true;
1058     owindow *current;
1059     TAILQ_FOREACH(current, &owindows, owindows) {
1060         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1061         result &= con_move_to_mark(current->con, mark);
1062     }
1063
1064     cmd_output->needs_tree_render = true;
1065     ysuccess(result);
1066 }
1067
1068 /*
1069  * Implementation of 'floating enable|disable|toggle'
1070  *
1071  */
1072 void cmd_floating(I3_CMD, const char *floating_mode) {
1073     owindow *current;
1074
1075     DLOG("floating_mode=%s\n", floating_mode);
1076
1077     HANDLE_EMPTY_MATCH;
1078
1079     TAILQ_FOREACH(current, &owindows, owindows) {
1080         DLOG("matching: %p / %s\n", current->con, current->con->name);
1081         if (strcmp(floating_mode, "toggle") == 0) {
1082             DLOG("should toggle mode\n");
1083             toggle_floating_mode(current->con, false);
1084         } else {
1085             DLOG("should switch mode to %s\n", floating_mode);
1086             if (strcmp(floating_mode, "enable") == 0) {
1087                 floating_enable(current->con, false);
1088             } else {
1089                 floating_disable(current->con, false);
1090             }
1091         }
1092     }
1093
1094     cmd_output->needs_tree_render = true;
1095     // XXX: default reply for now, make this a better reply
1096     ysuccess(true);
1097 }
1098
1099 /*
1100  * Implementation of 'move workspace to [output] <str>'.
1101  *
1102  */
1103 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1104     DLOG("should move workspace to output %s\n", name);
1105
1106     HANDLE_EMPTY_MATCH;
1107
1108     owindow *current;
1109     TAILQ_FOREACH(current, &owindows, owindows) {
1110         Con *ws = con_get_workspace(current->con);
1111         if (con_is_internal(ws)) {
1112             continue;
1113         }
1114
1115         Output *current_output = get_output_for_con(ws);
1116         if (current_output == NULL) {
1117             yerror("Cannot get current output. This is a bug in i3.");
1118             return;
1119         }
1120
1121         Output *target_output = get_output_from_string(current_output, name);
1122         if (!target_output) {
1123             yerror("Could not get output from string \"%s\"", name);
1124             return;
1125         }
1126
1127         bool success = workspace_move_to_output(ws, target_output);
1128         if (!success) {
1129             yerror("Failed to move workspace to output.");
1130             return;
1131         }
1132     }
1133
1134     cmd_output->needs_tree_render = true;
1135     ysuccess(true);
1136 }
1137
1138 /*
1139  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1140  *
1141  */
1142 void cmd_split(I3_CMD, const char *direction) {
1143     HANDLE_EMPTY_MATCH;
1144
1145     owindow *current;
1146     LOG("splitting in direction %c\n", direction[0]);
1147     TAILQ_FOREACH(current, &owindows, owindows) {
1148         if (con_is_docked(current->con)) {
1149             ELOG("Cannot split a docked container, skipping.\n");
1150             continue;
1151         }
1152
1153         DLOG("matching: %p / %s\n", current->con, current->con->name);
1154         if (direction[0] == 't') {
1155             layout_t current_layout;
1156             if (current->con->type == CT_WORKSPACE) {
1157                 current_layout = current->con->layout;
1158             } else {
1159                 current_layout = current->con->parent->layout;
1160             }
1161             /* toggling split orientation */
1162             if (current_layout == L_SPLITH) {
1163                 tree_split(current->con, VERT);
1164             } else {
1165                 tree_split(current->con, HORIZ);
1166             }
1167         } else {
1168             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1169         }
1170     }
1171
1172     cmd_output->needs_tree_render = true;
1173     // XXX: default reply for now, make this a better reply
1174     ysuccess(true);
1175 }
1176
1177 /*
1178  * Implementation of 'kill [window|client]'.
1179  *
1180  */
1181 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1182     if (kill_mode_str == NULL)
1183         kill_mode_str = "window";
1184
1185     DLOG("kill_mode=%s\n", kill_mode_str);
1186
1187     int kill_mode;
1188     if (strcmp(kill_mode_str, "window") == 0)
1189         kill_mode = KILL_WINDOW;
1190     else if (strcmp(kill_mode_str, "client") == 0)
1191         kill_mode = KILL_CLIENT;
1192     else {
1193         yerror("BUG: called with kill_mode=%s", kill_mode_str);
1194         return;
1195     }
1196
1197     HANDLE_EMPTY_MATCH;
1198
1199     owindow *current;
1200     TAILQ_FOREACH(current, &owindows, owindows) {
1201         con_close(current->con, kill_mode);
1202     }
1203
1204     cmd_output->needs_tree_render = true;
1205     // XXX: default reply for now, make this a better reply
1206     ysuccess(true);
1207 }
1208
1209 /*
1210  * Implementation of 'exec [--no-startup-id] <command>'.
1211  *
1212  */
1213 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1214     bool no_startup_id = (nosn != NULL);
1215
1216     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1217     start_application(command, no_startup_id);
1218
1219     ysuccess(true);
1220 }
1221
1222 /*
1223  * Implementation of 'focus left|right|up|down'.
1224  *
1225  */
1226 void cmd_focus_direction(I3_CMD, const char *direction) {
1227     switch (parse_direction(direction)) {
1228         case D_LEFT:
1229             tree_next('p', HORIZ);
1230             break;
1231         case D_RIGHT:
1232             tree_next('n', HORIZ);
1233             break;
1234         case D_UP:
1235             tree_next('p', VERT);
1236             break;
1237         case D_DOWN:
1238             tree_next('n', VERT);
1239             break;
1240     }
1241
1242     cmd_output->needs_tree_render = true;
1243     // XXX: default reply for now, make this a better reply
1244     ysuccess(true);
1245 }
1246
1247 /*
1248  * Focus a container and disable any other fullscreen container not permitting the focus.
1249  *
1250  */
1251 static void cmd_focus_force_focus(Con *con) {
1252     /* Disable fullscreen container in workspace with container to be focused. */
1253     Con *ws = con_get_workspace(con);
1254     Con *fullscreen_on_ws = con_get_fullscreen_covering_ws(ws);
1255     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1256         con_disable_fullscreen(fullscreen_on_ws);
1257     }
1258     con_activate(con);
1259 }
1260
1261 /*
1262  * Implementation of 'focus tiling|floating|mode_toggle'.
1263  *
1264  */
1265 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1266     DLOG("window_mode = %s\n", window_mode);
1267
1268     bool to_floating = false;
1269     if (strcmp(window_mode, "mode_toggle") == 0) {
1270         to_floating = !con_inside_floating(focused);
1271     } else if (strcmp(window_mode, "floating") == 0) {
1272         to_floating = true;
1273     } else if (strcmp(window_mode, "tiling") == 0) {
1274         to_floating = false;
1275     }
1276
1277     Con *ws = con_get_workspace(focused);
1278     Con *current;
1279     bool success = false;
1280     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1281         if ((to_floating && current->type != CT_FLOATING_CON) ||
1282             (!to_floating && current->type == CT_FLOATING_CON))
1283             continue;
1284
1285         cmd_focus_force_focus(con_descend_focused(current));
1286         success = true;
1287         break;
1288     }
1289
1290     if (success) {
1291         cmd_output->needs_tree_render = true;
1292         ysuccess(true);
1293     } else {
1294         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1295     }
1296 }
1297
1298 /*
1299  * Implementation of 'focus parent|child'.
1300  *
1301  */
1302 void cmd_focus_level(I3_CMD, const char *level) {
1303     DLOG("level = %s\n", level);
1304     bool success = false;
1305
1306     /* Focusing the parent can only be allowed if the newly
1307      * focused container won't escape the fullscreen container. */
1308     if (strcmp(level, "parent") == 0) {
1309         if (focused && focused->parent) {
1310             if (con_fullscreen_permits_focusing(focused->parent))
1311                 success = level_up();
1312             else
1313                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1314         }
1315     }
1316
1317     /* Focusing a child should always be allowed. */
1318     else
1319         success = level_down();
1320
1321     cmd_output->needs_tree_render = success;
1322     // XXX: default reply for now, make this a better reply
1323     ysuccess(success);
1324 }
1325
1326 /*
1327  * Implementation of 'focus'.
1328  *
1329  */
1330 void cmd_focus(I3_CMD) {
1331     DLOG("current_match = %p\n", current_match);
1332
1333     if (match_is_empty(current_match)) {
1334         ELOG("You have to specify which window/container should be focused.\n");
1335         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1336
1337         yerror("You have to specify which window/container should be focused");
1338
1339         return;
1340     }
1341
1342     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1343     int count = 0;
1344     owindow *current;
1345     TAILQ_FOREACH(current, &owindows, owindows) {
1346         Con *ws = con_get_workspace(current->con);
1347         /* If no workspace could be found, this was a dock window.
1348          * Just skip it, you cannot focus dock windows. */
1349         if (!ws)
1350             continue;
1351
1352         /* In case this is a scratchpad window, call scratchpad_show(). */
1353         if (ws == __i3_scratch) {
1354             scratchpad_show(current->con);
1355             count++;
1356             /* While for the normal focus case we can change focus multiple
1357              * times and only a single window ends up focused, we could show
1358              * multiple scratchpad windows. So, rather break here. */
1359             break;
1360         }
1361
1362         /* If the container is not on the current workspace,
1363          * workspace_show() will switch to a different workspace and (if
1364          * enabled) trigger a mouse pointer warp to the currently focused
1365          * container (!) on the target workspace.
1366          *
1367          * Therefore, before calling workspace_show(), we make sure that
1368          * 'current' will be focused on the workspace. However, we cannot
1369          * just con_focus(current) because then the pointer will not be
1370          * warped at all (the code thinks we are already there).
1371          *
1372          * So we focus 'current' to make it the currently focused window of
1373          * the target workspace, then revert focus. */
1374         Con *currently_focused = focused;
1375         cmd_focus_force_focus(current->con);
1376         con_activate(currently_focused);
1377
1378         /* Now switch to the workspace, then focus */
1379         workspace_show(ws);
1380         LOG("focusing %p / %s\n", current->con, current->con->name);
1381         con_activate(current->con);
1382         count++;
1383     }
1384
1385     if (count > 1)
1386         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1387             "while only exactly one container can be focused at a time.\n",
1388             count);
1389
1390     cmd_output->needs_tree_render = true;
1391     ysuccess(count > 0);
1392 }
1393
1394 /*
1395  * Implementation of 'fullscreen enable|toggle [global]' and
1396  *                   'fullscreen disable'
1397  *
1398  */
1399 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1400     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1401     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1402     owindow *current;
1403
1404     HANDLE_EMPTY_MATCH;
1405
1406     TAILQ_FOREACH(current, &owindows, owindows) {
1407         DLOG("matching: %p / %s\n", current->con, current->con->name);
1408         if (strcmp(action, "toggle") == 0) {
1409             con_toggle_fullscreen(current->con, mode);
1410         } else if (strcmp(action, "enable") == 0) {
1411             con_enable_fullscreen(current->con, mode);
1412         } else if (strcmp(action, "disable") == 0) {
1413             con_disable_fullscreen(current->con);
1414         }
1415     }
1416
1417     cmd_output->needs_tree_render = true;
1418     // XXX: default reply for now, make this a better reply
1419     ysuccess(true);
1420 }
1421
1422 /*
1423  * Implementation of 'sticky enable|disable|toggle'.
1424  *
1425  */
1426 void cmd_sticky(I3_CMD, const char *action) {
1427     DLOG("%s sticky on window\n", action);
1428     HANDLE_EMPTY_MATCH;
1429
1430     owindow *current;
1431     TAILQ_FOREACH(current, &owindows, owindows) {
1432         if (current->con->window == NULL) {
1433             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1434             continue;
1435         }
1436         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1437
1438         bool sticky = false;
1439         if (strcmp(action, "enable") == 0)
1440             sticky = true;
1441         else if (strcmp(action, "disable") == 0)
1442             sticky = false;
1443         else if (strcmp(action, "toggle") == 0)
1444             sticky = !current->con->sticky;
1445
1446         current->con->sticky = sticky;
1447         ewmh_update_sticky(current->con->window->id, sticky);
1448     }
1449
1450     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1451      * sure it gets pushed to the front now. */
1452     output_push_sticky_windows(focused);
1453
1454     ewmh_update_wm_desktop();
1455
1456     cmd_output->needs_tree_render = true;
1457     ysuccess(true);
1458 }
1459
1460 /*
1461  * Implementation of 'move <direction> [<pixels> [px]]'.
1462  *
1463  */
1464 void cmd_move_direction(I3_CMD, const char *direction_str, long move_px) {
1465     owindow *current;
1466     HANDLE_EMPTY_MATCH;
1467
1468     Con *initially_focused = focused;
1469     direction_t direction = parse_direction(direction_str);
1470
1471     TAILQ_FOREACH(current, &owindows, owindows) {
1472         DLOG("moving in direction %s, px %ld\n", direction_str, move_px);
1473         if (con_is_floating(current->con)) {
1474             DLOG("floating move with %ld pixels\n", move_px);
1475             Rect newrect = current->con->parent->rect;
1476
1477             switch (direction) {
1478                 case D_LEFT:
1479                     newrect.x -= move_px;
1480                     break;
1481                 case D_RIGHT:
1482                     newrect.x += move_px;
1483                     break;
1484                 case D_UP:
1485                     newrect.y -= move_px;
1486                     break;
1487                 case D_DOWN:
1488                     newrect.y += move_px;
1489                     break;
1490             }
1491
1492             floating_reposition(current->con->parent, newrect);
1493         } else {
1494             tree_move(current->con, direction);
1495             cmd_output->needs_tree_render = true;
1496         }
1497     }
1498
1499     /* the move command should not disturb focus */
1500     if (focused != initially_focused)
1501         con_activate(initially_focused);
1502
1503     // XXX: default reply for now, make this a better reply
1504     ysuccess(true);
1505 }
1506
1507 /*
1508  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1509  *
1510  */
1511 void cmd_layout(I3_CMD, const char *layout_str) {
1512     HANDLE_EMPTY_MATCH;
1513
1514     layout_t layout;
1515     if (!layout_from_name(layout_str, &layout)) {
1516         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1517         return;
1518     }
1519
1520     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1521
1522     owindow *current;
1523     TAILQ_FOREACH(current, &owindows, owindows) {
1524         if (con_is_docked(current->con)) {
1525             ELOG("cannot change layout of a docked container, skipping it.\n");
1526             continue;
1527         }
1528
1529         DLOG("matching: %p / %s\n", current->con, current->con->name);
1530         con_set_layout(current->con, layout);
1531     }
1532
1533     cmd_output->needs_tree_render = true;
1534     // XXX: default reply for now, make this a better reply
1535     ysuccess(true);
1536 }
1537
1538 /*
1539  * Implementation of 'layout toggle [all|split]'.
1540  *
1541  */
1542 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1543     owindow *current;
1544
1545     if (toggle_mode == NULL)
1546         toggle_mode = "default";
1547
1548     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1549
1550     /* check if the match is empty, not if the result is empty */
1551     if (match_is_empty(current_match))
1552         con_toggle_layout(focused, toggle_mode);
1553     else {
1554         TAILQ_FOREACH(current, &owindows, owindows) {
1555             DLOG("matching: %p / %s\n", current->con, current->con->name);
1556             con_toggle_layout(current->con, toggle_mode);
1557         }
1558     }
1559
1560     cmd_output->needs_tree_render = true;
1561     // XXX: default reply for now, make this a better reply
1562     ysuccess(true);
1563 }
1564
1565 /*
1566  * Implementation of 'exit'.
1567  *
1568  */
1569 void cmd_exit(I3_CMD) {
1570     LOG("Exiting due to user command.\n");
1571 #ifdef I3_ASAN_ENABLED
1572     __lsan_do_leak_check();
1573 #endif
1574     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1575     unlink(config.ipc_socket_path);
1576     xcb_disconnect(conn);
1577     exit(0);
1578
1579     /* unreached */
1580 }
1581
1582 /*
1583  * Implementation of 'reload'.
1584  *
1585  */
1586 void cmd_reload(I3_CMD) {
1587     LOG("reloading\n");
1588     kill_nagbar(&config_error_nagbar_pid, false);
1589     kill_nagbar(&command_error_nagbar_pid, false);
1590     load_configuration(conn, NULL, true);
1591     x_set_i3_atoms();
1592     /* Send an IPC event just in case the ws names have changed */
1593     ipc_send_workspace_event("reload", NULL, NULL);
1594     /* Send an update event for the barconfig just in case it has changed */
1595     update_barconfig();
1596
1597     // XXX: default reply for now, make this a better reply
1598     ysuccess(true);
1599 }
1600
1601 /*
1602  * Implementation of 'restart'.
1603  *
1604  */
1605 void cmd_restart(I3_CMD) {
1606     LOG("restarting i3\n");
1607     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1608     unlink(config.ipc_socket_path);
1609     /* We need to call this manually since atexit handlers don’t get called
1610      * when exec()ing */
1611     purge_zerobyte_logfile();
1612     i3_restart(false);
1613
1614     // XXX: default reply for now, make this a better reply
1615     ysuccess(true);
1616 }
1617
1618 /*
1619  * Implementation of 'open'.
1620  *
1621  */
1622 void cmd_open(I3_CMD) {
1623     LOG("opening new container\n");
1624     Con *con = tree_open_con(NULL, NULL);
1625     con->layout = L_SPLITH;
1626     con_activate(con);
1627
1628     y(map_open);
1629     ystr("success");
1630     y(bool, true);
1631     ystr("id");
1632     y(integer, (uintptr_t)con);
1633     y(map_close);
1634
1635     cmd_output->needs_tree_render = true;
1636 }
1637
1638 /*
1639  * Implementation of 'focus output <output>'.
1640  *
1641  */
1642 void cmd_focus_output(I3_CMD, const char *name) {
1643     owindow *current;
1644
1645     DLOG("name = %s\n", name);
1646
1647     HANDLE_EMPTY_MATCH;
1648
1649     /* get the output */
1650     Output *current_output = NULL;
1651     Output *output;
1652
1653     TAILQ_FOREACH(current, &owindows, owindows)
1654     current_output = get_output_for_con(current->con);
1655     assert(current_output != NULL);
1656
1657     output = get_output_from_string(current_output, name);
1658
1659     if (!output) {
1660         yerror("No such output found.");
1661         return;
1662     }
1663
1664     /* get visible workspace on output */
1665     Con *ws = NULL;
1666     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1667     if (!ws) {
1668         yerror("BUG: No workspace found on output.");
1669         return;
1670     }
1671
1672     workspace_show(ws);
1673
1674     cmd_output->needs_tree_render = true;
1675     // XXX: default reply for now, make this a better reply
1676     ysuccess(true);
1677 }
1678
1679 /*
1680  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1681  *
1682  */
1683 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1684     bool has_error = false;
1685
1686     owindow *current;
1687     HANDLE_EMPTY_MATCH;
1688
1689     TAILQ_FOREACH(current, &owindows, owindows) {
1690         if (!con_is_floating(current->con)) {
1691             ELOG("Cannot change position. The window/container is not floating\n");
1692
1693             if (!has_error) {
1694                 yerror("Cannot change position of a window/container because it is not floating.");
1695                 has_error = true;
1696             }
1697
1698             continue;
1699         }
1700
1701         Rect newrect = current->con->parent->rect;
1702
1703         DLOG("moving to position %ld %ld\n", x, y);
1704         newrect.x = x;
1705         newrect.y = y;
1706
1707         if (!floating_reposition(current->con->parent, newrect)) {
1708             yerror("Cannot move window/container out of bounds.");
1709             has_error = true;
1710         }
1711     }
1712
1713     if (!has_error)
1714         ysuccess(true);
1715 }
1716
1717 /*
1718  * Implementation of 'move [window|container] [to] [absolute] position center
1719  *
1720  */
1721 void cmd_move_window_to_center(I3_CMD, const char *method) {
1722     bool has_error = false;
1723     HANDLE_EMPTY_MATCH;
1724
1725     owindow *current;
1726     TAILQ_FOREACH(current, &owindows, owindows) {
1727         Con *floating_con = con_inside_floating(current->con);
1728         if (floating_con == NULL) {
1729             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1730                  current->con, current->con->name);
1731
1732             if (!has_error) {
1733                 yerror("Cannot change position of a window/container because it is not floating.");
1734                 has_error = true;
1735             }
1736
1737             continue;
1738         }
1739
1740         if (strcmp(method, "absolute") == 0) {
1741             DLOG("moving to absolute center\n");
1742             floating_center(floating_con, croot->rect);
1743
1744             floating_maybe_reassign_ws(floating_con);
1745             cmd_output->needs_tree_render = true;
1746         }
1747
1748         if (strcmp(method, "position") == 0) {
1749             DLOG("moving to center\n");
1750             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1751
1752             cmd_output->needs_tree_render = true;
1753         }
1754     }
1755
1756     // XXX: default reply for now, make this a better reply
1757     if (!has_error)
1758         ysuccess(true);
1759 }
1760
1761 /*
1762  * Implementation of 'move [window|container] [to] position mouse'
1763  *
1764  */
1765 void cmd_move_window_to_mouse(I3_CMD) {
1766     HANDLE_EMPTY_MATCH;
1767
1768     owindow *current;
1769     TAILQ_FOREACH(current, &owindows, owindows) {
1770         Con *floating_con = con_inside_floating(current->con);
1771         if (floating_con == NULL) {
1772             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1773                  current->con, current->con->name);
1774             continue;
1775         }
1776
1777         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1778         floating_move_to_pointer(floating_con);
1779     }
1780
1781     cmd_output->needs_tree_render = true;
1782     ysuccess(true);
1783 }
1784
1785 /*
1786  * Implementation of 'move scratchpad'.
1787  *
1788  */
1789 void cmd_move_scratchpad(I3_CMD) {
1790     DLOG("should move window to scratchpad\n");
1791     owindow *current;
1792
1793     HANDLE_EMPTY_MATCH;
1794
1795     TAILQ_FOREACH(current, &owindows, owindows) {
1796         DLOG("matching: %p / %s\n", current->con, current->con->name);
1797         scratchpad_move(current->con);
1798     }
1799
1800     cmd_output->needs_tree_render = true;
1801     // XXX: default reply for now, make this a better reply
1802     ysuccess(true);
1803 }
1804
1805 /*
1806  * Implementation of 'scratchpad show'.
1807  *
1808  */
1809 void cmd_scratchpad_show(I3_CMD) {
1810     DLOG("should show scratchpad window\n");
1811     owindow *current;
1812     bool result = false;
1813
1814     if (match_is_empty(current_match)) {
1815         result = scratchpad_show(NULL);
1816     } else {
1817         TAILQ_FOREACH(current, &owindows, owindows) {
1818             DLOG("matching: %p / %s\n", current->con, current->con->name);
1819             result |= scratchpad_show(current->con);
1820         }
1821     }
1822
1823     cmd_output->needs_tree_render = true;
1824
1825     ysuccess(result);
1826 }
1827
1828 /*
1829  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1830  *
1831  */
1832 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1833     HANDLE_EMPTY_MATCH;
1834
1835     owindow *match = TAILQ_FIRST(&owindows);
1836     if (match == NULL) {
1837         yerror("No match found for swapping.");
1838         return;
1839     }
1840     if (match->con == NULL) {
1841         yerror("Match %p has no container.", match);
1842         return;
1843     }
1844
1845     Con *con;
1846     if (strcmp(mode, "id") == 0) {
1847         long target;
1848         if (!parse_long(arg, &target, 0)) {
1849             yerror("Failed to parse %s into a window id.", arg);
1850             return;
1851         }
1852
1853         con = con_by_window_id(target);
1854     } else if (strcmp(mode, "con_id") == 0) {
1855         long target;
1856         if (!parse_long(arg, &target, 0)) {
1857             yerror("Failed to parse %s into a container id.", arg);
1858             return;
1859         }
1860
1861         con = con_by_con_id(target);
1862     } else if (strcmp(mode, "mark") == 0) {
1863         con = con_by_mark(arg);
1864     } else {
1865         yerror("Unhandled swap mode \"%s\". This is a bug.", mode);
1866         return;
1867     }
1868
1869     if (con == NULL) {
1870         yerror("Could not find container for %s = %s", mode, arg);
1871         return;
1872     }
1873
1874     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1875         LOG("More than one container matched the swap command, only using the first one.");
1876     }
1877
1878     DLOG("Swapping %p with %p.\n", match->con, con);
1879     bool result = con_swap(match->con, con);
1880
1881     cmd_output->needs_tree_render = true;
1882     // XXX: default reply for now, make this a better reply
1883     ysuccess(result);
1884 }
1885
1886 /*
1887  * Implementation of 'title_format <format>'
1888  *
1889  */
1890 void cmd_title_format(I3_CMD, const char *format) {
1891     DLOG("setting title_format to \"%s\"\n", format);
1892     HANDLE_EMPTY_MATCH;
1893
1894     owindow *current;
1895     TAILQ_FOREACH(current, &owindows, owindows) {
1896         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1897         FREE(current->con->title_format);
1898
1899         /* If we only display the title without anything else, we can skip the parsing step,
1900          * so we remove the title format altogether. */
1901         if (strcasecmp(format, "%title") != 0) {
1902             current->con->title_format = sstrdup(format);
1903
1904             if (current->con->window != NULL) {
1905                 i3String *formatted_title = con_parse_title_format(current->con);
1906                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1907                 I3STRING_FREE(formatted_title);
1908             }
1909         } else {
1910             if (current->con->window != NULL) {
1911                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1912                 ewmh_update_visible_name(current->con->window->id, NULL);
1913             }
1914         }
1915
1916         if (current->con->window != NULL) {
1917             /* Make sure the window title is redrawn immediately. */
1918             current->con->window->name_x_changed = true;
1919         } else {
1920             /* For windowless containers we also need to force the redrawing. */
1921             FREE(current->con->deco_render_params);
1922         }
1923     }
1924
1925     cmd_output->needs_tree_render = true;
1926     ysuccess(true);
1927 }
1928
1929 /*
1930  * Implementation of 'rename workspace [<name>] to <name>'
1931  *
1932  */
1933 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1934     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1935         yerror("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.", new_name);
1936         return;
1937     }
1938     if (old_name) {
1939         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1940     } else {
1941         LOG("Renaming current workspace to \"%s\"\n", new_name);
1942     }
1943
1944     Con *workspace;
1945     if (old_name) {
1946         workspace = get_existing_workspace_by_name(old_name);
1947     } else {
1948         workspace = con_get_workspace(focused);
1949         old_name = workspace->name;
1950     }
1951
1952     if (!workspace) {
1953         yerror("Old workspace \"%s\" not found", old_name);
1954         return;
1955     }
1956
1957     Con *check_dest = get_existing_workspace_by_name(new_name);
1958
1959     /* If check_dest == workspace, the user might be changing the case of the
1960      * workspace, or it might just be a no-op. */
1961     if (check_dest != NULL && check_dest != workspace) {
1962         yerror("New workspace \"%s\" already exists", new_name);
1963         return;
1964     }
1965
1966     /* Change the name and try to parse it as a number. */
1967     /* old_name might refer to workspace->name, so copy it before free()ing */
1968     char *old_name_copy = sstrdup(old_name);
1969     FREE(workspace->name);
1970     workspace->name = sstrdup(new_name);
1971
1972     workspace->num = ws_name_to_number(new_name);
1973     LOG("num = %d\n", workspace->num);
1974
1975     /* By re-attaching, the sort order will be correct afterwards. */
1976     Con *previously_focused = focused;
1977     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
1978     Con *parent = workspace->parent;
1979     con_detach(workspace);
1980     con_attach(workspace, parent, false);
1981     ipc_send_workspace_event("rename", workspace, NULL);
1982
1983     /* Move the workspace to the correct output if it has an assignment */
1984     struct Workspace_Assignment *assignment = NULL;
1985     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
1986         if (assignment->output == NULL)
1987             continue;
1988         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
1989             continue;
1990         }
1991
1992         Output *target_output = get_output_by_name(assignment->output, true);
1993         if (!target_output) {
1994             LOG("Could not get output named \"%s\"\n", assignment->output);
1995             continue;
1996         }
1997         if (!output_triggers_assignment(target_output, assignment)) {
1998             continue;
1999         }
2000         workspace_move_to_output(workspace, target_output);
2001
2002         break;
2003     }
2004
2005     bool can_restore_focus = previously_focused != NULL;
2006     /* NB: If previously_focused is a workspace we can't work directly with it
2007      * since it might have been cleaned up by workspace_show() already,
2008      * depending on the focus order/number of other workspaces on the output.
2009      * Instead, we loop through the available workspaces and only focus
2010      * previously_focused if we still find it. */
2011     if (previously_focused_content) {
2012         Con *workspace = NULL;
2013         GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2014         can_restore_focus &= (workspace != NULL);
2015     }
2016
2017     if (can_restore_focus) {
2018         /* Restore the previous focus since con_attach messes with the focus. */
2019         workspace_show(con_get_workspace(previously_focused));
2020         con_focus(previously_focused);
2021     }
2022
2023     cmd_output->needs_tree_render = true;
2024     ysuccess(true);
2025
2026     ewmh_update_desktop_names();
2027     ewmh_update_desktop_viewport();
2028     ewmh_update_current_desktop();
2029
2030     startup_sequence_rename_workspace(old_name_copy, new_name);
2031     free(old_name_copy);
2032 }
2033
2034 /*
2035  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2036  *
2037  */
2038 static bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2039     int mode = M_DOCK;
2040     bool toggle = false;
2041     if (strcmp(bar_mode, "dock") == 0)
2042         mode = M_DOCK;
2043     else if (strcmp(bar_mode, "hide") == 0)
2044         mode = M_HIDE;
2045     else if (strcmp(bar_mode, "invisible") == 0)
2046         mode = M_INVISIBLE;
2047     else if (strcmp(bar_mode, "toggle") == 0)
2048         toggle = true;
2049     else {
2050         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2051         return false;
2052     }
2053
2054     bool changed_sth = false;
2055     Barconfig *current = NULL;
2056     TAILQ_FOREACH(current, &barconfigs, configs) {
2057         if (bar_id && strcmp(current->id, bar_id) != 0)
2058             continue;
2059
2060         if (toggle)
2061             mode = (current->mode + 1) % 2;
2062
2063         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2064         current->mode = mode;
2065         changed_sth = true;
2066
2067         if (bar_id)
2068             break;
2069     }
2070
2071     if (bar_id && !changed_sth) {
2072         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2073         return false;
2074     }
2075
2076     return true;
2077 }
2078
2079 /*
2080  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2081  *
2082  */
2083 static bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2084     int hidden_state = S_SHOW;
2085     bool toggle = false;
2086     if (strcmp(bar_hidden_state, "hide") == 0)
2087         hidden_state = S_HIDE;
2088     else if (strcmp(bar_hidden_state, "show") == 0)
2089         hidden_state = S_SHOW;
2090     else if (strcmp(bar_hidden_state, "toggle") == 0)
2091         toggle = true;
2092     else {
2093         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2094         return false;
2095     }
2096
2097     bool changed_sth = false;
2098     Barconfig *current = NULL;
2099     TAILQ_FOREACH(current, &barconfigs, configs) {
2100         if (bar_id && strcmp(current->id, bar_id) != 0)
2101             continue;
2102
2103         if (toggle)
2104             hidden_state = (current->hidden_state + 1) % 2;
2105
2106         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2107         current->hidden_state = hidden_state;
2108         changed_sth = true;
2109
2110         if (bar_id)
2111             break;
2112     }
2113
2114     if (bar_id && !changed_sth) {
2115         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2116         return false;
2117     }
2118
2119     return true;
2120 }
2121
2122 /*
2123  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2124  *
2125  */
2126 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2127     bool ret;
2128     if (strcmp(bar_type, "mode") == 0)
2129         ret = cmd_bar_mode(bar_value, bar_id);
2130     else if (strcmp(bar_type, "hidden_state") == 0)
2131         ret = cmd_bar_hidden_state(bar_value, bar_id);
2132     else {
2133         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2134         ret = false;
2135     }
2136
2137     ysuccess(ret);
2138     if (!ret)
2139         return;
2140
2141     update_barconfig();
2142 }
2143
2144 /*
2145  * Implementation of 'shmlog <size>|toggle|on|off'
2146  *
2147  */
2148 void cmd_shmlog(I3_CMD, const char *argument) {
2149     if (!strcmp(argument, "toggle"))
2150         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2151         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2152     else if (!strcmp(argument, "on"))
2153         shmlog_size = default_shmlog_size;
2154     else if (!strcmp(argument, "off"))
2155         shmlog_size = 0;
2156     else {
2157         long new_size = 0;
2158         if (!parse_long(argument, &new_size, 0)) {
2159             yerror("Failed to parse %s into a shmlog size.", argument);
2160             return;
2161         }
2162         /* If shm logging now, restart logging with the new size. */
2163         if (shmlog_size > 0) {
2164             shmlog_size = 0;
2165             LOG("Restarting shm logging...\n");
2166             init_logging();
2167         }
2168         shmlog_size = (int)new_size;
2169     }
2170     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2171     init_logging();
2172     update_shmlog_atom();
2173     ysuccess(true);
2174 }
2175
2176 /*
2177  * Implementation of 'debuglog toggle|on|off'
2178  *
2179  */
2180 void cmd_debuglog(I3_CMD, const char *argument) {
2181     bool logging = get_debug_logging();
2182     if (!strcmp(argument, "toggle")) {
2183         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2184         set_debug_logging(!logging);
2185     } else if (!strcmp(argument, "on") && !logging) {
2186         LOG("Enabling debug logging\n");
2187         set_debug_logging(true);
2188     } else if (!strcmp(argument, "off") && logging) {
2189         LOG("Disabling debug logging\n");
2190         set_debug_logging(false);
2191     }
2192     // XXX: default reply for now, make this a better reply
2193     ysuccess(true);
2194 }