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

   1 #undef I3__FILE__
   2 #define I3__FILE__ "commands.c"
   3 /*
   4  * vim:ts=4:sw=4:expandtab
   5  *
   6  * i3 - an improved dynamic tiling window manager
   7  * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
   8  *
   9  * commands.c: all command functions (see commands_parser.c)
  10  *
  11  */
  12 #include <float.h>
  13 #include <stdarg.h>
  14
  15 #ifdef I3_ASAN_ENABLED
  16 #include <sanitizer/lsan_interface.h>
  17 #endif
  18
  19 #include "all.h"
  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 occured 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  * Returns the output containing the given container.
  91  */
  92 static Output *get_output_of_con(Con *con) {
  93     Con *output_con = con_get_output(con);
  94     Output *output = get_output_by_name(output_con->name);
  95     assert(output != NULL);
  96
  97     return output;
  98 }
  99
 100 /*
 101  * Checks whether we switched to a new workspace and returns false in that case,
 102  * signaling that further workspace switching should be done by the calling function
 103  * If not, calls workspace_back_and_forth() if workspace_auto_back_and_forth is set
 104  * and return true, signaling that no further workspace switching should occur in the calling function.
 105  *
 106  */
 107 static bool maybe_back_and_forth(struct CommandResultIR *cmd_output, const char *name) {
 108     Con *ws = con_get_workspace(focused);
 109
 110     /* If we switched to a different workspace, do nothing */
 111     if (strcmp(ws->name, name) != 0)
 112         return false;
 113
 114     DLOG("This workspace is already focused.\n");
 115     if (config.workspace_auto_back_and_forth) {
 116         workspace_back_and_forth();
 117         cmd_output->needs_tree_render = true;
 118     }
 119     return true;
 120 }
 121
 122 /*
 123  * Return the passed workspace unless it is the current one and auto back and
 124  * forth is enabled, in which case the back_and_forth workspace is returned.
 125  */
 126 static Con *maybe_auto_back_and_forth_workspace(Con *workspace) {
 127     Con *current, *baf;
 128
 129     if (!config.workspace_auto_back_and_forth)
 130         return workspace;
 131
 132     current = con_get_workspace(focused);
 133
 134     if (current == workspace) {
 135         baf = workspace_back_and_forth_get();
 136         if (baf != NULL) {
 137             DLOG("Substituting workspace with back_and_forth, as it is focused.\n");
 138             return baf;
 139         }
 140     }
 141
 142     return workspace;
 143 }
 144
 145 /*******************************************************************************
 146  * Criteria functions.
 147  ******************************************************************************/
 148
 149 /*
 150  * Helper data structure for an operation window (window on which the operation
 151  * will be performed). Used to build the TAILQ owindows.
 152  *
 153  */
 154 typedef struct owindow {
 155     Con *con;
 156     TAILQ_ENTRY(owindow) owindows;
 157 } owindow;
 158
 159 typedef TAILQ_HEAD(owindows_head, owindow) owindows_head;
 160
 161 static owindows_head owindows;
 162
 163 /*
 164  * Initializes the specified 'Match' data structure and the initial state of
 165  * commands.c for matching target windows of a command.
 166  *
 167  */
 168 void cmd_criteria_init(I3_CMD) {
 169     Con *con;
 170     owindow *ow;
 171
 172     DLOG("Initializing criteria, current_match = %p\n", current_match);
 173     match_free(current_match);
 174     match_init(current_match);
 175     while (!TAILQ_EMPTY(&owindows)) {
 176         ow = TAILQ_FIRST(&owindows);
 177         TAILQ_REMOVE(&owindows, ow, owindows);
 178         free(ow);
 179     }
 180     TAILQ_INIT(&owindows);
 181     /* copy all_cons */
 182     TAILQ_FOREACH(con, &all_cons, all_cons) {
 183         ow = smalloc(sizeof(owindow));
 184         ow->con = con;
 185         TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 186     }
 187 }
 188
 189 /*
 190  * A match specification just finished (the closing square bracket was found),
 191  * so we filter the list of owindows.
 192  *
 193  */
 194 void cmd_criteria_match_windows(I3_CMD) {
 195     owindow *next, *current;
 196
 197     DLOG("match specification finished, matching...\n");
 198     /* copy the old list head to iterate through it and start with a fresh
 199      * list which will contain only matching windows */
 200     struct owindows_head old = owindows;
 201     TAILQ_INIT(&owindows);
 202     for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 203         /* make a copy of the next pointer and advance the pointer to the
 204          * next element as we are going to invalidate the element’s
 205          * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 206         current = next;
 207         next = TAILQ_NEXT(next, owindows);
 208
 209         DLOG("checking if con %p / %s matches\n", current->con, current->con->name);
 210
 211         /* We use this flag to prevent matching on window-less containers if
 212          * only window-specific criteria were specified. */
 213         bool accept_match = false;
 214
 215         if (current_match->con_id != NULL) {
 216             accept_match = true;
 217
 218             if (current_match->con_id == current->con) {
 219                 DLOG("con_id matched.\n");
 220             } else {
 221                 DLOG("con_id does not match.\n");
 222                 FREE(current);
 223                 continue;
 224             }
 225         }
 226
 227         if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
 228             accept_match = true;
 229             bool matched_by_mark = false;
 230
 231             mark_t *mark;
 232             TAILQ_FOREACH(mark, &(current->con->marks_head), marks) {
 233                 if (!regex_matches(current_match->mark, mark->name))
 234                     continue;
 235
 236                 DLOG("match by mark\n");
 237                 matched_by_mark = true;
 238                 break;
 239             }
 240
 241             if (!matched_by_mark) {
 242                 DLOG("mark does not match.\n");
 243                 FREE(current);
 244                 continue;
 245             }
 246         }
 247
 248         if (current->con->window != NULL) {
 249             if (match_matches_window(current_match, current->con->window)) {
 250                 DLOG("matches window!\n");
 251                 accept_match = true;
 252             } else {
 253                 DLOG("doesn't match\n");
 254                 FREE(current);
 255                 continue;
 256             }
 257         }
 258
 259         if (accept_match) {
 260             TAILQ_INSERT_TAIL(&owindows, current, owindows);
 261         } else {
 262             FREE(current);
 263             continue;
 264         }
 265     }
 266
 267     TAILQ_FOREACH(current, &owindows, owindows) {
 268         DLOG("matching: %p / %s\n", current->con, current->con->name);
 269     }
 270 }
 271
 272 /*
 273  * Interprets a ctype=cvalue pair and adds it to the current match
 274  * specification.
 275  *
 276  */
 277 void cmd_criteria_add(I3_CMD, const char *ctype, const char *cvalue) {
 278     match_parse_property(current_match, ctype, cvalue);
 279 }
 280
 281 /*
 282  * Implementation of 'move [window|container] [to] workspace
 283  * next|prev|next_on_output|prev_on_output|current'.
 284  *
 285  */
 286 void cmd_move_con_to_workspace(I3_CMD, const char *which) {
 287     owindow *current;
 288
 289     DLOG("which=%s\n", which);
 290
 291     /* We have nothing to move:
 292      *  when criteria was specified but didn't match any window or
 293      *  when criteria wasn't specified and we don't have any window focused. */
 294     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 295         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 296          !con_has_children(focused))) {
 297         ysuccess(false);
 298         return;
 299     }
 300
 301     HANDLE_EMPTY_MATCH;
 302
 303     /* get the workspace */
 304     Con *ws;
 305     if (strcmp(which, "next") == 0)
 306         ws = workspace_next();
 307     else if (strcmp(which, "prev") == 0)
 308         ws = workspace_prev();
 309     else if (strcmp(which, "next_on_output") == 0)
 310         ws = workspace_next_on_output();
 311     else if (strcmp(which, "prev_on_output") == 0)
 312         ws = workspace_prev_on_output();
 313     else if (strcmp(which, "current") == 0)
 314         ws = con_get_workspace(focused);
 315     else {
 316         ELOG("BUG: called with which=%s\n", which);
 317         ysuccess(false);
 318         return;
 319     }
 320
 321     TAILQ_FOREACH(current, &owindows, owindows) {
 322         DLOG("matching: %p / %s\n", current->con, current->con->name);
 323         con_move_to_workspace(current->con, ws, true, false, false);
 324     }
 325
 326     cmd_output->needs_tree_render = true;
 327     // XXX: default reply for now, make this a better reply
 328     ysuccess(true);
 329 }
 330
 331 /**
 332  * Implementation of 'move [window|container] [to] workspace back_and_forth'.
 333  *
 334  */
 335 void cmd_move_con_to_workspace_back_and_forth(I3_CMD) {
 336     owindow *current;
 337     Con *ws;
 338
 339     ws = workspace_back_and_forth_get();
 340
 341     if (ws == NULL) {
 342         yerror("No workspace was previously active.");
 343         return;
 344     }
 345
 346     HANDLE_EMPTY_MATCH;
 347
 348     TAILQ_FOREACH(current, &owindows, owindows) {
 349         DLOG("matching: %p / %s\n", current->con, current->con->name);
 350         con_move_to_workspace(current->con, ws, true, false, false);
 351     }
 352
 353     cmd_output->needs_tree_render = true;
 354     // XXX: default reply for now, make this a better reply
 355     ysuccess(true);
 356 }
 357
 358 /*
 359  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace <name>'.
 360  *
 361  */
 362 void cmd_move_con_to_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 363     if (strncasecmp(name, "__", strlen("__")) == 0) {
 364         LOG("You cannot move containers to i3-internal workspaces (\"%s\").\n", name);
 365         ysuccess(false);
 366         return;
 367     }
 368
 369     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 370     owindow *current;
 371
 372     /* We have nothing to move:
 373      *  when criteria was specified but didn't match any window or
 374      *  when criteria wasn't specified and we don't have any window focused. */
 375     if (!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) {
 376         ELOG("No windows match your criteria, cannot move.\n");
 377         ysuccess(false);
 378         return;
 379     } else if (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 380                !con_has_children(focused)) {
 381         ysuccess(false);
 382         return;
 383     }
 384
 385     LOG("should move window to workspace %s\n", name);
 386     /* get the workspace */
 387     Con *ws = workspace_get(name, NULL);
 388
 389     if (!no_auto_back_and_forth)
 390         ws = maybe_auto_back_and_forth_workspace(ws);
 391
 392     HANDLE_EMPTY_MATCH;
 393
 394     TAILQ_FOREACH(current, &owindows, owindows) {
 395         DLOG("matching: %p / %s\n", current->con, current->con->name);
 396         con_move_to_workspace(current->con, ws, true, false, false);
 397     }
 398
 399     cmd_output->needs_tree_render = true;
 400     // XXX: default reply for now, make this a better reply
 401     ysuccess(true);
 402 }
 403
 404 /*
 405  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace number <name>'.
 406  *
 407  */
 408 void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 409     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 410     owindow *current;
 411
 412     /* We have nothing to move:
 413      *  when criteria was specified but didn't match any window or
 414      *  when criteria wasn't specified and we don't have any window focused. */
 415     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 416         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 417          !con_has_children(focused))) {
 418         ysuccess(false);
 419         return;
 420     }
 421
 422     LOG("should move window to workspace %s\n", which);
 423     /* get the workspace */
 424     Con *output, *workspace = NULL;
 425
 426     long parsed_num = ws_name_to_number(which);
 427
 428     if (parsed_num == -1) {
 429         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 430         yerror("Could not parse number \"%s\"", which);
 431         return;
 432     }
 433
 434     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
 435     GREP_FIRST(workspace, output_get_content(output),
 436                child->num == parsed_num);
 437
 438     if (!workspace) {
 439         workspace = workspace_get(which, NULL);
 440     }
 441
 442     if (!no_auto_back_and_forth)
 443         workspace = maybe_auto_back_and_forth_workspace(workspace);
 444
 445     HANDLE_EMPTY_MATCH;
 446
 447     TAILQ_FOREACH(current, &owindows, owindows) {
 448         DLOG("matching: %p / %s\n", current->con, current->con->name);
 449         con_move_to_workspace(current->con, workspace, true, false, false);
 450     }
 451
 452     cmd_output->needs_tree_render = true;
 453     // XXX: default reply for now, make this a better reply
 454     ysuccess(true);
 455 }
 456
 457 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction, Con *floating_con, int px) {
 458     LOG("floating resize\n");
 459     Rect old_rect = floating_con->rect;
 460     Con *focused_con = con_descend_focused(floating_con);
 461
 462     /* ensure that resize will take place even if pixel increment is smaller than
 463      * height increment or width increment.
 464      * fixes #1011 */
 465     const i3Window *window = focused_con->window;
 466     if (window != NULL) {
 467         if (strcmp(direction, "up") == 0 || strcmp(direction, "down") == 0 ||
 468             strcmp(direction, "height") == 0) {
 469             if (px < 0)
 470                 px = (-px < window->height_increment) ? -window->height_increment : px;
 471             else
 472                 px = (px < window->height_increment) ? window->height_increment : px;
 473         } else if (strcmp(direction, "left") == 0 || strcmp(direction, "right") == 0) {
 474             if (px < 0)
 475                 px = (-px < window->width_increment) ? -window->width_increment : px;
 476             else
 477                 px = (px < window->width_increment) ? window->width_increment : px;
 478         }
 479     }
 480
 481     if (strcmp(direction, "up") == 0) {
 482         floating_con->rect.height += px;
 483     } else if (strcmp(direction, "down") == 0 || strcmp(direction, "height") == 0) {
 484         floating_con->rect.height += px;
 485     } else if (strcmp(direction, "left") == 0) {
 486         floating_con->rect.width += px;
 487     } else {
 488         floating_con->rect.width += px;
 489     }
 490
 491     floating_check_size(floating_con);
 492
 493     /* Did we actually resize anything or did the size constraints prevent us?
 494      * If we could not resize, exit now to not move the window. */
 495     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0)
 496         return;
 497
 498     if (strcmp(direction, "up") == 0) {
 499         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 500     } else if (strcmp(direction, "left") == 0) {
 501         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 502     }
 503
 504     /* If this is a scratchpad window, don't auto center it from now on. */
 505     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
 506         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 507 }
 508
 509 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 510     LOG("tiling resize\n");
 511     Con *second = NULL;
 512     Con *first = current;
 513     direction_t search_direction;
 514     if (!strcmp(direction, "left"))
 515         search_direction = D_LEFT;
 516     else if (!strcmp(direction, "right"))
 517         search_direction = D_RIGHT;
 518     else if (!strcmp(direction, "up"))
 519         search_direction = D_UP;
 520     else
 521         search_direction = D_DOWN;
 522
 523     bool res = resize_find_tiling_participants(&first, &second, search_direction);
 524     if (!res) {
 525         LOG("No second container in this direction found.\n");
 526         ysuccess(false);
 527         return false;
 528     }
 529
 530     /* get the default percentage */
 531     int children = con_num_children(first->parent);
 532     LOG("ins. %d children\n", children);
 533     double percentage = 1.0 / children;
 534     LOG("default percentage = %f\n", percentage);
 535
 536     /* resize */
 537     LOG("second->percent = %f\n", second->percent);
 538     LOG("first->percent before = %f\n", first->percent);
 539     if (first->percent == 0.0)
 540         first->percent = percentage;
 541     if (second->percent == 0.0)
 542         second->percent = percentage;
 543     double new_first_percent = first->percent + ((double)ppt / 100.0);
 544     double new_second_percent = second->percent - ((double)ppt / 100.0);
 545     LOG("new_first_percent = %f\n", new_first_percent);
 546     LOG("new_second_percent = %f\n", new_second_percent);
 547     /* Ensure that the new percentages are positive and greater than
 548      * 0.05 to have a reasonable minimum size. */
 549     if (definitelyGreaterThan(new_first_percent, 0.05, DBL_EPSILON) &&
 550         definitelyGreaterThan(new_second_percent, 0.05, DBL_EPSILON)) {
 551         first->percent += ((double)ppt / 100.0);
 552         second->percent -= ((double)ppt / 100.0);
 553         LOG("first->percent after = %f\n", first->percent);
 554         LOG("second->percent after = %f\n", second->percent);
 555     } else {
 556         LOG("Not resizing, already at minimum size\n");
 557     }
 558
 559     return true;
 560 }
 561
 562 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 563     LOG("width/height resize\n");
 564     /* get the appropriate current container (skip stacked/tabbed cons) */
 565     while (current->parent->layout == L_STACKED ||
 566            current->parent->layout == L_TABBED)
 567         current = current->parent;
 568
 569     /* Then further go up until we find one with the matching orientation. */
 570     orientation_t search_orientation =
 571         (strcmp(direction, "width") == 0 ? HORIZ : VERT);
 572
 573     while (current->type != CT_WORKSPACE &&
 574            current->type != CT_FLOATING_CON &&
 575            (con_orientation(current->parent) != search_orientation || con_num_children(current->parent) == 1))
 576         current = current->parent;
 577
 578     /* get the default percentage */
 579     int children = con_num_children(current->parent);
 580     LOG("ins. %d children\n", children);
 581     double percentage = 1.0 / children;
 582     LOG("default percentage = %f\n", percentage);
 583
 584     orientation_t orientation = con_orientation(current->parent);
 585
 586     if ((orientation == HORIZ &&
 587          strcmp(direction, "height") == 0) ||
 588         (orientation == VERT &&
 589          strcmp(direction, "width") == 0)) {
 590         LOG("You cannot resize in that direction. Your focus is in a %s split container currently.\n",
 591             (orientation == HORIZ ? "horizontal" : "vertical"));
 592         ysuccess(false);
 593         return false;
 594     }
 595
 596     if (children == 1) {
 597         LOG("This is the only container, cannot resize.\n");
 598         ysuccess(false);
 599         return false;
 600     }
 601
 602     /* Ensure all the other children have a percentage set. */
 603     Con *child;
 604     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 605         LOG("child->percent = %f (child %p)\n", child->percent, child);
 606         if (child->percent == 0.0)
 607             child->percent = percentage;
 608     }
 609
 610     double new_current_percent = current->percent + ((double)ppt / 100.0);
 611     double subtract_percent = ((double)ppt / 100.0) / (children - 1);
 612     LOG("new_current_percent = %f\n", new_current_percent);
 613     LOG("subtract_percent = %f\n", subtract_percent);
 614     /* Ensure that the new percentages are positive and greater than
 615      * 0.05 to have a reasonable minimum size. */
 616     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 617         if (child == current)
 618             continue;
 619         if (!definitelyGreaterThan(child->percent - subtract_percent, 0.05, DBL_EPSILON)) {
 620             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 621             ysuccess(false);
 622             return false;
 623         }
 624     }
 625     if (!definitelyGreaterThan(new_current_percent, 0.05, DBL_EPSILON)) {
 626         LOG("Not resizing, already at minimum size\n");
 627         ysuccess(false);
 628         return false;
 629     }
 630
 631     current->percent += ((double)ppt / 100.0);
 632     LOG("current->percent after = %f\n", current->percent);
 633
 634     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 635         if (child == current)
 636             continue;
 637         child->percent -= subtract_percent;
 638         LOG("child->percent after (%p) = %f\n", child, child->percent);
 639     }
 640
 641     return true;
 642 }
 643
 644 /*
 645  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 646  *
 647  */
 648 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 649     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 650     if (strcmp(way, "shrink") == 0) {
 651         resize_px *= -1;
 652         resize_ppt *= -1;
 653     }
 654
 655     HANDLE_EMPTY_MATCH;
 656
 657     owindow *current;
 658     TAILQ_FOREACH(current, &owindows, owindows) {
 659         /* Don't handle dock windows (issue #1201) */
 660         if (current->con->window && current->con->window->dock) {
 661             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 662             continue;
 663         }
 664
 665         Con *floating_con;
 666         if ((floating_con = con_inside_floating(current->con))) {
 667             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 668         } else {
 669             if (strcmp(direction, "width") == 0 ||
 670                 strcmp(direction, "height") == 0) {
 671                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 672                                                     current->con, way, direction, resize_ppt))
 673                     return;
 674             } else {
 675                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 676                                                  current->con, way, direction, resize_ppt))
 677                     return;
 678             }
 679         }
 680     }
 681
 682     cmd_output->needs_tree_render = true;
 683     // XXX: default reply for now, make this a better reply
 684     ysuccess(true);
 685 }
 686
 687 /*
 688  * Implementation of 'resize set <px> [px] <px> [px]'.
 689  *
 690  */
 691 void cmd_resize_set(I3_CMD, long cwidth, long cheight) {
 692     DLOG("resizing to %ldx%ld px\n", cwidth, cheight);
 693     if (cwidth <= 0 || cheight <= 0) {
 694         ELOG("Resize failed: dimensions cannot be negative (was %ldx%ld)\n", cwidth, cheight);
 695         return;
 696     }
 697
 698     HANDLE_EMPTY_MATCH;
 699
 700     owindow *current;
 701     TAILQ_FOREACH(current, &owindows, owindows) {
 702         Con *floating_con;
 703         if ((floating_con = con_inside_floating(current->con))) {
 704             floating_resize(floating_con, cwidth, cheight);
 705         } else {
 706             ELOG("Resize failed: %p not a floating container\n", current->con);
 707         }
 708     }
 709
 710     cmd_output->needs_tree_render = true;
 711     // XXX: default reply for now, make this a better reply
 712     ysuccess(true);
 713 }
 714
 715 /*
 716  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 717  *
 718  */
 719 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 720     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 721     owindow *current;
 722
 723     HANDLE_EMPTY_MATCH;
 724
 725     TAILQ_FOREACH(current, &owindows, owindows) {
 726         DLOG("matching: %p / %s\n", current->con, current->con->name);
 727         int border_style = current->con->border_style;
 728         int con_border_width = border_width;
 729
 730         if (strcmp(border_style_str, "toggle") == 0) {
 731             border_style++;
 732             border_style %= 3;
 733             if (border_style == BS_NORMAL)
 734                 con_border_width = 2;
 735             else if (border_style == BS_NONE)
 736                 con_border_width = 0;
 737             else if (border_style == BS_PIXEL)
 738                 con_border_width = 1;
 739         } else {
 740             if (strcmp(border_style_str, "normal") == 0) {
 741                 border_style = BS_NORMAL;
 742             } else if (strcmp(border_style_str, "pixel") == 0) {
 743                 border_style = BS_PIXEL;
 744             } else if (strcmp(border_style_str, "1pixel") == 0) {
 745                 border_style = BS_PIXEL;
 746                 con_border_width = 1;
 747             } else if (strcmp(border_style_str, "none") == 0) {
 748                 border_style = BS_NONE;
 749             } else {
 750                 ELOG("BUG: called with border_style=%s\n", border_style_str);
 751                 ysuccess(false);
 752                 return;
 753             }
 754         }
 755
 756         con_set_border_style(current->con, border_style, logical_px(con_border_width));
 757     }
 758
 759     cmd_output->needs_tree_render = true;
 760     // XXX: default reply for now, make this a better reply
 761     ysuccess(true);
 762 }
 763
 764 /*
 765  * Implementation of 'nop <comment>'.
 766  *
 767  */
 768 void cmd_nop(I3_CMD, const char *comment) {
 769     LOG("-------------------------------------------------\n");
 770     LOG("  NOP: %s\n", comment);
 771     LOG("-------------------------------------------------\n");
 772 }
 773
 774 /*
 775  * Implementation of 'append_layout <path>'.
 776  *
 777  */
 778 void cmd_append_layout(I3_CMD, const char *cpath) {
 779     char *path = sstrdup(cpath);
 780     LOG("Appending layout \"%s\"\n", path);
 781
 782     /* Make sure we allow paths like '~/.i3/layout.json' */
 783     path = resolve_tilde(path);
 784
 785     json_content_t content = json_determine_content(path);
 786     LOG("JSON content = %d\n", content);
 787     if (content == JSON_CONTENT_UNKNOWN) {
 788         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 789         yerror("Could not determine the contents of \"%s\".", path);
 790         free(path);
 791         return;
 792     }
 793
 794     Con *parent = focused;
 795     if (content == JSON_CONTENT_WORKSPACE) {
 796         parent = output_get_content(con_get_output(parent));
 797     } else {
 798         /* We need to append the layout to a split container, since a leaf
 799          * container must not have any children (by definition).
 800          * Note that we explicitly check for workspaces, since they are okay for
 801          * this purpose, but con_accepts_window() returns false for workspaces. */
 802         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 803             parent = parent->parent;
 804     }
 805     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 806     char *errormsg = NULL;
 807     tree_append_json(parent, path, &errormsg);
 808     if (errormsg != NULL) {
 809         yerror(errormsg);
 810         free(errormsg);
 811         /* Note that we continue executing since tree_append_json() has
 812          * side-effects — user-provided layouts can be partly valid, partly
 813          * invalid, leading to half of the placeholder containers being
 814          * created. */
 815     } else {
 816         ysuccess(true);
 817     }
 818
 819     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 820     // false); should be enough, but when sending 'workspace 4; append_layout
 821     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 822     // is not executed yet and will be batched with append_layout’s
 823     // needs_tree_render after the parser finished. We should check if that is
 824     // necessary at all.
 825     render_con(croot, false);
 826
 827     restore_open_placeholder_windows(parent);
 828
 829     if (content == JSON_CONTENT_WORKSPACE)
 830         ipc_send_workspace_event("restored", parent, NULL);
 831
 832     free(path);
 833     cmd_output->needs_tree_render = true;
 834 }
 835
 836 /*
 837  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 838  *
 839  */
 840 void cmd_workspace(I3_CMD, const char *which) {
 841     Con *ws;
 842
 843     DLOG("which=%s\n", which);
 844
 845     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 846         LOG("Cannot switch workspace while in global fullscreen\n");
 847         ysuccess(false);
 848         return;
 849     }
 850
 851     if (strcmp(which, "next") == 0)
 852         ws = workspace_next();
 853     else if (strcmp(which, "prev") == 0)
 854         ws = workspace_prev();
 855     else if (strcmp(which, "next_on_output") == 0)
 856         ws = workspace_next_on_output();
 857     else if (strcmp(which, "prev_on_output") == 0)
 858         ws = workspace_prev_on_output();
 859     else {
 860         ELOG("BUG: called with which=%s\n", which);
 861         ysuccess(false);
 862         return;
 863     }
 864
 865     workspace_show(ws);
 866
 867     cmd_output->needs_tree_render = true;
 868     // XXX: default reply for now, make this a better reply
 869     ysuccess(true);
 870 }
 871
 872 /*
 873  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 874  *
 875  */
 876 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 877     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 878     Con *output, *workspace = NULL;
 879
 880     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 881         LOG("Cannot switch workspace while in global fullscreen\n");
 882         ysuccess(false);
 883         return;
 884     }
 885
 886     long parsed_num = ws_name_to_number(which);
 887
 888     if (parsed_num == -1) {
 889         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 890         yerror("Could not parse number \"%s\"", which);
 891         return;
 892     }
 893
 894     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
 895     GREP_FIRST(workspace, output_get_content(output),
 896                child->num == parsed_num);
 897
 898     if (!workspace) {
 899         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 900         ysuccess(true);
 901         workspace_show_by_name(which);
 902         cmd_output->needs_tree_render = true;
 903         return;
 904     }
 905     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name))
 906         return;
 907     workspace_show(workspace);
 908
 909     cmd_output->needs_tree_render = true;
 910     // XXX: default reply for now, make this a better reply
 911     ysuccess(true);
 912 }
 913
 914 /*
 915  * Implementation of 'workspace back_and_forth'.
 916  *
 917  */
 918 void cmd_workspace_back_and_forth(I3_CMD) {
 919     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 920         LOG("Cannot switch workspace while in global fullscreen\n");
 921         ysuccess(false);
 922         return;
 923     }
 924
 925     workspace_back_and_forth();
 926
 927     cmd_output->needs_tree_render = true;
 928     // XXX: default reply for now, make this a better reply
 929     ysuccess(true);
 930 }
 931
 932 /*
 933  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 934  *
 935  */
 936 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 937     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 938
 939     if (strncasecmp(name, "__", strlen("__")) == 0) {
 940         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 941         ysuccess(false);
 942         return;
 943     }
 944
 945     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 946         LOG("Cannot switch workspace while in global fullscreen\n");
 947         ysuccess(false);
 948         return;
 949     }
 950
 951     DLOG("should switch to workspace %s\n", name);
 952     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name))
 953         return;
 954     workspace_show_by_name(name);
 955
 956     cmd_output->needs_tree_render = true;
 957     // XXX: default reply for now, make this a better reply
 958     ysuccess(true);
 959 }
 960
 961 /*
 962  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 963  *
 964  */
 965 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 966     HANDLE_EMPTY_MATCH;
 967
 968     owindow *current = TAILQ_FIRST(&owindows);
 969     if (current == NULL) {
 970         ysuccess(false);
 971         return;
 972     }
 973
 974     /* Marks must be unique, i.e., no two windows must have the same mark. */
 975     if (current != TAILQ_LAST(&owindows, owindows_head)) {
 976         yerror("A mark must not be put onto more than one window");
 977         return;
 978     }
 979
 980     DLOG("matching: %p / %s\n", current->con, current->con->name);
 981
 982     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
 983     if (toggle != NULL) {
 984         con_mark_toggle(current->con, mark, mark_mode);
 985     } else {
 986         con_mark(current->con, mark, mark_mode);
 987     }
 988
 989     cmd_output->needs_tree_render = true;
 990     // XXX: default reply for now, make this a better reply
 991     ysuccess(true);
 992 }
 993
 994 /*
 995  * Implementation of 'unmark [mark]'
 996  *
 997  */
 998 void cmd_unmark(I3_CMD, const char *mark) {
 999     if (match_is_empty(current_match)) {
1000         con_unmark(NULL, mark);
1001     } else {
1002         owindow *current;
1003         TAILQ_FOREACH(current, &owindows, owindows) {
1004             con_unmark(current->con, mark);
1005         }
1006     }
1007
1008     cmd_output->needs_tree_render = true;
1009     // XXX: default reply for now, make this a better reply
1010     ysuccess(true);
1011 }
1012
1013 /*
1014  * Implementation of 'mode <string>'.
1015  *
1016  */
1017 void cmd_mode(I3_CMD, const char *mode) {
1018     DLOG("mode=%s\n", mode);
1019     switch_mode(mode);
1020
1021     // XXX: default reply for now, make this a better reply
1022     ysuccess(true);
1023 }
1024
1025 /*
1026  * Implementation of 'move [window|container] [to] output <str>'.
1027  *
1028  */
1029 void cmd_move_con_to_output(I3_CMD, const char *name) {
1030     DLOG("Should move window to output \"%s\".\n", name);
1031     HANDLE_EMPTY_MATCH;
1032
1033     owindow *current;
1034     bool had_error = false;
1035     TAILQ_FOREACH(current, &owindows, owindows) {
1036         DLOG("matching: %p / %s\n", current->con, current->con->name);
1037
1038         Output *current_output = get_output_of_con(current->con);
1039         assert(current_output != NULL);
1040
1041         Output *output = get_output_from_string(current_output, name);
1042         if (output == NULL) {
1043             ELOG("Could not find output \"%s\", skipping.\n", name);
1044             had_error = true;
1045             continue;
1046         }
1047
1048         Con *ws = NULL;
1049         GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1050         if (ws == NULL) {
1051             ELOG("Could not find a visible workspace on output %p.\n", output);
1052             had_error = true;
1053             continue;
1054         }
1055
1056         con_move_to_workspace(current->con, ws, true, false, false);
1057     }
1058
1059     cmd_output->needs_tree_render = true;
1060     ysuccess(!had_error);
1061 }
1062
1063 /*
1064  * Implementation of 'move [container|window] [to] mark <str>'.
1065  *
1066  */
1067 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1068     DLOG("moving window to mark \"%s\"\n", mark);
1069
1070     HANDLE_EMPTY_MATCH;
1071
1072     bool result = true;
1073     owindow *current;
1074     TAILQ_FOREACH(current, &owindows, owindows) {
1075         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1076         result &= con_move_to_mark(current->con, mark);
1077     }
1078
1079     cmd_output->needs_tree_render = true;
1080     ysuccess(result);
1081 }
1082
1083 /*
1084  * Implementation of 'floating enable|disable|toggle'
1085  *
1086  */
1087 void cmd_floating(I3_CMD, const char *floating_mode) {
1088     owindow *current;
1089
1090     DLOG("floating_mode=%s\n", floating_mode);
1091
1092     HANDLE_EMPTY_MATCH;
1093
1094     TAILQ_FOREACH(current, &owindows, owindows) {
1095         DLOG("matching: %p / %s\n", current->con, current->con->name);
1096         if (strcmp(floating_mode, "toggle") == 0) {
1097             DLOG("should toggle mode\n");
1098             toggle_floating_mode(current->con, false);
1099         } else {
1100             DLOG("should switch mode to %s\n", floating_mode);
1101             if (strcmp(floating_mode, "enable") == 0) {
1102                 floating_enable(current->con, false);
1103             } else {
1104                 floating_disable(current->con, false);
1105             }
1106         }
1107     }
1108
1109     cmd_output->needs_tree_render = true;
1110     // XXX: default reply for now, make this a better reply
1111     ysuccess(true);
1112 }
1113
1114 /*
1115  * Implementation of 'move workspace to [output] <str>'.
1116  *
1117  */
1118 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1119     DLOG("should move workspace to output %s\n", name);
1120
1121     HANDLE_EMPTY_MATCH;
1122
1123     owindow *current;
1124     TAILQ_FOREACH(current, &owindows, owindows) {
1125         Con *ws = con_get_workspace(current->con);
1126         bool success = workspace_move_to_output(ws, name);
1127         if (!success) {
1128             ELOG("Failed to move workspace to output.\n");
1129             ysuccess(false);
1130             return;
1131         }
1132     }
1133
1134     cmd_output->needs_tree_render = true;
1135     // XXX: default reply for now, make this a better reply
1136     ysuccess(true);
1137 }
1138
1139 /*
1140  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1141  *
1142  */
1143 void cmd_split(I3_CMD, const char *direction) {
1144     HANDLE_EMPTY_MATCH;
1145
1146     owindow *current;
1147     LOG("splitting in direction %c\n", direction[0]);
1148     TAILQ_FOREACH(current, &owindows, owindows) {
1149         if (con_is_docked(current->con)) {
1150             ELOG("Cannot split a docked container, skipping.\n");
1151             continue;
1152         }
1153
1154         DLOG("matching: %p / %s\n", current->con, current->con->name);
1155         if (direction[0] == 't') {
1156             layout_t current_layout;
1157             if (current->con->type == CT_WORKSPACE) {
1158                 current_layout = current->con->layout;
1159             } else {
1160                 current_layout = current->con->parent->layout;
1161             }
1162             /* toggling split orientation */
1163             if (current_layout == L_SPLITH) {
1164                 tree_split(current->con, VERT);
1165             } else {
1166                 tree_split(current->con, HORIZ);
1167             }
1168         } else {
1169             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1170         }
1171     }
1172
1173     cmd_output->needs_tree_render = true;
1174     // XXX: default reply for now, make this a better reply
1175     ysuccess(true);
1176 }
1177
1178 /*
1179  * Implementation of 'kill [window|client]'.
1180  *
1181  */
1182 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1183     if (kill_mode_str == NULL)
1184         kill_mode_str = "window";
1185
1186     DLOG("kill_mode=%s\n", kill_mode_str);
1187
1188     int kill_mode;
1189     if (strcmp(kill_mode_str, "window") == 0)
1190         kill_mode = KILL_WINDOW;
1191     else if (strcmp(kill_mode_str, "client") == 0)
1192         kill_mode = KILL_CLIENT;
1193     else {
1194         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1195         ysuccess(false);
1196         return;
1197     }
1198
1199     HANDLE_EMPTY_MATCH;
1200
1201     owindow *current;
1202     TAILQ_FOREACH(current, &owindows, owindows) {
1203         con_close(current->con, kill_mode);
1204     }
1205
1206     cmd_output->needs_tree_render = true;
1207     // XXX: default reply for now, make this a better reply
1208     ysuccess(true);
1209 }
1210
1211 /*
1212  * Implementation of 'exec [--no-startup-id] <command>'.
1213  *
1214  */
1215 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1216     bool no_startup_id = (nosn != NULL);
1217
1218     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1219     start_application(command, no_startup_id);
1220
1221     // XXX: default reply for now, make this a better reply
1222     ysuccess(true);
1223 }
1224
1225 /*
1226  * Implementation of 'focus left|right|up|down'.
1227  *
1228  */
1229 void cmd_focus_direction(I3_CMD, const char *direction) {
1230     DLOG("direction = *%s*\n", direction);
1231
1232     if (strcmp(direction, "left") == 0)
1233         tree_next('p', HORIZ);
1234     else if (strcmp(direction, "right") == 0)
1235         tree_next('n', HORIZ);
1236     else if (strcmp(direction, "up") == 0)
1237         tree_next('p', VERT);
1238     else if (strcmp(direction, "down") == 0)
1239         tree_next('n', VERT);
1240     else {
1241         ELOG("Invalid focus direction (%s)\n", direction);
1242         ysuccess(false);
1243         return;
1244     }
1245
1246     cmd_output->needs_tree_render = true;
1247     // XXX: default reply for now, make this a better reply
1248     ysuccess(true);
1249 }
1250
1251 /*
1252  * Implementation of 'focus tiling|floating|mode_toggle'.
1253  *
1254  */
1255 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1256     DLOG("window_mode = %s\n", window_mode);
1257
1258     Con *ws = con_get_workspace(focused);
1259     if (ws != NULL) {
1260         if (strcmp(window_mode, "mode_toggle") == 0) {
1261             if (con_inside_floating(focused))
1262                 window_mode = "tiling";
1263             else
1264                 window_mode = "floating";
1265         }
1266         Con *current;
1267         TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1268             if ((strcmp(window_mode, "floating") == 0 && current->type != CT_FLOATING_CON) ||
1269                 (strcmp(window_mode, "tiling") == 0 && current->type == CT_FLOATING_CON))
1270                 continue;
1271
1272             con_focus(con_descend_focused(current));
1273             break;
1274         }
1275     }
1276
1277     cmd_output->needs_tree_render = true;
1278     // XXX: default reply for now, make this a better reply
1279     ysuccess(true);
1280 }
1281
1282 /*
1283  * Implementation of 'focus parent|child'.
1284  *
1285  */
1286 void cmd_focus_level(I3_CMD, const char *level) {
1287     DLOG("level = %s\n", level);
1288     bool success = false;
1289
1290     /* Focusing the parent can only be allowed if the newly
1291      * focused container won't escape the fullscreen container. */
1292     if (strcmp(level, "parent") == 0) {
1293         if (focused && focused->parent) {
1294             if (con_fullscreen_permits_focusing(focused->parent))
1295                 success = level_up();
1296             else
1297                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1298         }
1299     }
1300
1301     /* Focusing a child should always be allowed. */
1302     else
1303         success = level_down();
1304
1305     cmd_output->needs_tree_render = success;
1306     // XXX: default reply for now, make this a better reply
1307     ysuccess(success);
1308 }
1309
1310 /*
1311  * Implementation of 'focus'.
1312  *
1313  */
1314 void cmd_focus(I3_CMD) {
1315     DLOG("current_match = %p\n", current_match);
1316
1317     if (match_is_empty(current_match)) {
1318         ELOG("You have to specify which window/container should be focused.\n");
1319         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1320
1321         yerror("You have to specify which window/container should be focused");
1322
1323         return;
1324     }
1325
1326     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1327     int count = 0;
1328     owindow *current;
1329     TAILQ_FOREACH(current, &owindows, owindows) {
1330         Con *ws = con_get_workspace(current->con);
1331         /* If no workspace could be found, this was a dock window.
1332          * Just skip it, you cannot focus dock windows. */
1333         if (!ws)
1334             continue;
1335
1336         /* Check the fullscreen focus constraints. */
1337         if (!con_fullscreen_permits_focusing(current->con)) {
1338             LOG("Cannot change focus while in fullscreen mode (fullscreen rules).\n");
1339             ysuccess(false);
1340             return;
1341         }
1342
1343         /* In case this is a scratchpad window, call scratchpad_show(). */
1344         if (ws == __i3_scratch) {
1345             scratchpad_show(current->con);
1346             count++;
1347             /* While for the normal focus case we can change focus multiple
1348              * times and only a single window ends up focused, we could show
1349              * multiple scratchpad windows. So, rather break here. */
1350             break;
1351         }
1352
1353         /* If the container is not on the current workspace,
1354          * workspace_show() will switch to a different workspace and (if
1355          * enabled) trigger a mouse pointer warp to the currently focused
1356          * container (!) on the target workspace.
1357          *
1358          * Therefore, before calling workspace_show(), we make sure that
1359          * 'current' will be focused on the workspace. However, we cannot
1360          * just con_focus(current) because then the pointer will not be
1361          * warped at all (the code thinks we are already there).
1362          *
1363          * So we focus 'current' to make it the currently focused window of
1364          * the target workspace, then revert focus. */
1365         Con *currently_focused = focused;
1366         con_focus(current->con);
1367         con_focus(currently_focused);
1368
1369         /* Now switch to the workspace, then focus */
1370         workspace_show(ws);
1371         LOG("focusing %p / %s\n", current->con, current->con->name);
1372         con_focus(current->con);
1373         count++;
1374     }
1375
1376     if (count > 1)
1377         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1378             "while only exactly one container can be focused at a time.\n",
1379             count);
1380
1381     cmd_output->needs_tree_render = true;
1382     ysuccess(count > 0);
1383 }
1384
1385 /*
1386  * Implementation of 'fullscreen enable|toggle [global]' and
1387  *                   'fullscreen disable'
1388  *
1389  */
1390 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1391     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1392     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1393     owindow *current;
1394
1395     HANDLE_EMPTY_MATCH;
1396
1397     TAILQ_FOREACH(current, &owindows, owindows) {
1398         DLOG("matching: %p / %s\n", current->con, current->con->name);
1399         if (strcmp(action, "toggle") == 0) {
1400             con_toggle_fullscreen(current->con, mode);
1401         } else if (strcmp(action, "enable") == 0) {
1402             con_enable_fullscreen(current->con, mode);
1403         } else if (strcmp(action, "disable") == 0) {
1404             con_disable_fullscreen(current->con);
1405         }
1406     }
1407
1408     cmd_output->needs_tree_render = true;
1409     // XXX: default reply for now, make this a better reply
1410     ysuccess(true);
1411 }
1412
1413 /*
1414  * Implementation of 'sticky enable|disable|toggle'.
1415  *
1416  */
1417 void cmd_sticky(I3_CMD, const char *action) {
1418     DLOG("%s sticky on window\n", action);
1419     HANDLE_EMPTY_MATCH;
1420
1421     owindow *current;
1422     TAILQ_FOREACH(current, &owindows, owindows) {
1423         if (current->con->window == NULL) {
1424             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1425             continue;
1426         }
1427         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1428
1429         bool sticky = false;
1430         if (strcmp(action, "enable") == 0)
1431             sticky = true;
1432         else if (strcmp(action, "disable") == 0)
1433             sticky = false;
1434         else if (strcmp(action, "toggle") == 0)
1435             sticky = !current->con->sticky;
1436
1437         current->con->sticky = sticky;
1438         ewmh_update_sticky(current->con->window->id, sticky);
1439     }
1440
1441     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1442      * sure it gets pushed to the front now. */
1443     output_push_sticky_windows(focused);
1444
1445     ewmh_update_wm_desktop();
1446
1447     cmd_output->needs_tree_render = true;
1448     ysuccess(true);
1449 }
1450
1451 /*
1452  * Implementation of 'move <direction> [<pixels> [px]]'.
1453  *
1454  */
1455 void cmd_move_direction(I3_CMD, const char *direction, long move_px) {
1456     owindow *current;
1457     HANDLE_EMPTY_MATCH;
1458
1459     Con *initially_focused = focused;
1460
1461     TAILQ_FOREACH(current, &owindows, owindows) {
1462         DLOG("moving in direction %s, px %ld\n", direction, move_px);
1463         if (con_is_floating(current->con)) {
1464             DLOG("floating move with %ld pixels\n", move_px);
1465             Rect newrect = current->con->parent->rect;
1466             if (strcmp(direction, "left") == 0) {
1467                 newrect.x -= move_px;
1468             } else if (strcmp(direction, "right") == 0) {
1469                 newrect.x += move_px;
1470             } else if (strcmp(direction, "up") == 0) {
1471                 newrect.y -= move_px;
1472             } else if (strcmp(direction, "down") == 0) {
1473                 newrect.y += move_px;
1474             }
1475             floating_reposition(current->con->parent, newrect);
1476         } else {
1477             tree_move(current->con, (strcmp(direction, "right") == 0 ? D_RIGHT : (strcmp(direction, "left") == 0 ? D_LEFT : (strcmp(direction, "up") == 0 ? D_UP : D_DOWN))));
1478             cmd_output->needs_tree_render = true;
1479         }
1480     }
1481
1482     /* the move command should not disturb focus */
1483     if (focused != initially_focused)
1484         con_focus(initially_focused);
1485
1486     // XXX: default reply for now, make this a better reply
1487     ysuccess(true);
1488 }
1489
1490 /*
1491  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1492  *
1493  */
1494 void cmd_layout(I3_CMD, const char *layout_str) {
1495     HANDLE_EMPTY_MATCH;
1496
1497     if (strcmp(layout_str, "stacking") == 0)
1498         layout_str = "stacked";
1499     layout_t layout;
1500     /* default is a special case which will be handled in con_set_layout(). */
1501     if (strcmp(layout_str, "default") == 0)
1502         layout = L_DEFAULT;
1503     else if (strcmp(layout_str, "stacked") == 0)
1504         layout = L_STACKED;
1505     else if (strcmp(layout_str, "tabbed") == 0)
1506         layout = L_TABBED;
1507     else if (strcmp(layout_str, "splitv") == 0)
1508         layout = L_SPLITV;
1509     else if (strcmp(layout_str, "splith") == 0)
1510         layout = L_SPLITH;
1511     else {
1512         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1513         return;
1514     }
1515
1516     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1517
1518     owindow *current;
1519     TAILQ_FOREACH(current, &owindows, owindows) {
1520         if (con_is_docked(current->con)) {
1521             ELOG("cannot change layout of a docked container, skipping it.\n");
1522             continue;
1523         }
1524
1525         DLOG("matching: %p / %s\n", current->con, current->con->name);
1526         con_set_layout(current->con, layout);
1527     }
1528
1529     cmd_output->needs_tree_render = true;
1530     // XXX: default reply for now, make this a better reply
1531     ysuccess(true);
1532 }
1533
1534 /*
1535  * Implementation of 'layout toggle [all|split]'.
1536  *
1537  */
1538 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1539     owindow *current;
1540
1541     if (toggle_mode == NULL)
1542         toggle_mode = "default";
1543
1544     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1545
1546     /* check if the match is empty, not if the result is empty */
1547     if (match_is_empty(current_match))
1548         con_toggle_layout(focused, toggle_mode);
1549     else {
1550         TAILQ_FOREACH(current, &owindows, owindows) {
1551             DLOG("matching: %p / %s\n", current->con, current->con->name);
1552             con_toggle_layout(current->con, toggle_mode);
1553         }
1554     }
1555
1556     cmd_output->needs_tree_render = true;
1557     // XXX: default reply for now, make this a better reply
1558     ysuccess(true);
1559 }
1560
1561 /*
1562  * Implementation of 'exit'.
1563  *
1564  */
1565 void cmd_exit(I3_CMD) {
1566     LOG("Exiting due to user command.\n");
1567 #ifdef I3_ASAN_ENABLED
1568     __lsan_do_leak_check();
1569 #endif
1570     ipc_shutdown();
1571     unlink(config.ipc_socket_path);
1572     xcb_disconnect(conn);
1573     exit(0);
1574
1575     /* unreached */
1576 }
1577
1578 /*
1579  * Implementation of 'reload'.
1580  *
1581  */
1582 void cmd_reload(I3_CMD) {
1583     LOG("reloading\n");
1584     kill_nagbar(&config_error_nagbar_pid, false);
1585     kill_nagbar(&command_error_nagbar_pid, false);
1586     load_configuration(conn, NULL, true);
1587     x_set_i3_atoms();
1588     /* Send an IPC event just in case the ws names have changed */
1589     ipc_send_workspace_event("reload", NULL, NULL);
1590     /* Send an update event for the barconfig just in case it has changed */
1591     update_barconfig();
1592
1593     // XXX: default reply for now, make this a better reply
1594     ysuccess(true);
1595 }
1596
1597 /*
1598  * Implementation of 'restart'.
1599  *
1600  */
1601 void cmd_restart(I3_CMD) {
1602     LOG("restarting i3\n");
1603     ipc_shutdown();
1604     unlink(config.ipc_socket_path);
1605     /* We need to call this manually since atexit handlers don’t get called
1606      * when exec()ing */
1607     purge_zerobyte_logfile();
1608     i3_restart(false);
1609
1610     // XXX: default reply for now, make this a better reply
1611     ysuccess(true);
1612 }
1613
1614 /*
1615  * Implementation of 'open'.
1616  *
1617  */
1618 void cmd_open(I3_CMD) {
1619     LOG("opening new container\n");
1620     Con *con = tree_open_con(NULL, NULL);
1621     con->layout = L_SPLITH;
1622     con_focus(con);
1623
1624     y(map_open);
1625     ystr("success");
1626     y(bool, true);
1627     ystr("id");
1628     y(integer, (long int)con);
1629     y(map_close);
1630
1631     cmd_output->needs_tree_render = true;
1632 }
1633
1634 /*
1635  * Implementation of 'focus output <output>'.
1636  *
1637  */
1638 void cmd_focus_output(I3_CMD, const char *name) {
1639     owindow *current;
1640
1641     DLOG("name = %s\n", name);
1642
1643     HANDLE_EMPTY_MATCH;
1644
1645     /* get the output */
1646     Output *current_output = NULL;
1647     Output *output;
1648
1649     TAILQ_FOREACH(current, &owindows, owindows)
1650     current_output = get_output_of_con(current->con);
1651     assert(current_output != NULL);
1652
1653     output = get_output_from_string(current_output, name);
1654
1655     if (!output) {
1656         LOG("No such output found.\n");
1657         ysuccess(false);
1658         return;
1659     }
1660
1661     /* get visible workspace on output */
1662     Con *ws = NULL;
1663     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1664     if (!ws) {
1665         ysuccess(false);
1666         return;
1667     }
1668
1669     workspace_show(ws);
1670
1671     cmd_output->needs_tree_render = true;
1672     // XXX: default reply for now, make this a better reply
1673     ysuccess(true);
1674 }
1675
1676 /*
1677  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1678  *
1679  */
1680 void cmd_move_window_to_position(I3_CMD, const char *method, long x, long y) {
1681     bool has_error = false;
1682
1683     owindow *current;
1684     HANDLE_EMPTY_MATCH;
1685
1686     TAILQ_FOREACH(current, &owindows, owindows) {
1687         if (!con_is_floating(current->con)) {
1688             ELOG("Cannot change position. The window/container is not floating\n");
1689
1690             if (!has_error) {
1691                 yerror("Cannot change position of a window/container because it is not floating.");
1692                 has_error = true;
1693             }
1694
1695             continue;
1696         }
1697
1698         if (strcmp(method, "absolute") == 0) {
1699             current->con->parent->rect.x = x;
1700             current->con->parent->rect.y = y;
1701
1702             DLOG("moving to absolute position %ld %ld\n", x, y);
1703             floating_maybe_reassign_ws(current->con->parent);
1704             cmd_output->needs_tree_render = true;
1705         }
1706
1707         if (strcmp(method, "position") == 0) {
1708             Rect newrect = current->con->parent->rect;
1709
1710             DLOG("moving to position %ld %ld\n", x, y);
1711             newrect.x = x;
1712             newrect.y = y;
1713
1714             floating_reposition(current->con->parent, newrect);
1715         }
1716     }
1717
1718     // XXX: default reply for now, make this a better reply
1719     if (!has_error)
1720         ysuccess(true);
1721 }
1722
1723 /*
1724  * Implementation of 'move [window|container] [to] [absolute] position center
1725  *
1726  */
1727 void cmd_move_window_to_center(I3_CMD, const char *method) {
1728     bool has_error = false;
1729     HANDLE_EMPTY_MATCH;
1730
1731     owindow *current;
1732     TAILQ_FOREACH(current, &owindows, owindows) {
1733         Con *floating_con = con_inside_floating(current->con);
1734         if (floating_con == NULL) {
1735             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1736                  current->con, current->con->name);
1737
1738             if (!has_error) {
1739                 yerror("Cannot change position of a window/container because it is not floating.");
1740                 has_error = true;
1741             }
1742
1743             continue;
1744         }
1745
1746         if (strcmp(method, "absolute") == 0) {
1747             DLOG("moving to absolute center\n");
1748             floating_center(floating_con, croot->rect);
1749
1750             floating_maybe_reassign_ws(floating_con);
1751             cmd_output->needs_tree_render = true;
1752         }
1753
1754         if (strcmp(method, "position") == 0) {
1755             DLOG("moving to center\n");
1756             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1757
1758             cmd_output->needs_tree_render = true;
1759         }
1760     }
1761
1762     // XXX: default reply for now, make this a better reply
1763     if (!has_error)
1764         ysuccess(true);
1765 }
1766
1767 /*
1768  * Implementation of 'move [window|container] [to] position mouse'
1769  *
1770  */
1771 void cmd_move_window_to_mouse(I3_CMD) {
1772     HANDLE_EMPTY_MATCH;
1773
1774     owindow *current;
1775     TAILQ_FOREACH(current, &owindows, owindows) {
1776         Con *floating_con = con_inside_floating(current->con);
1777         if (floating_con == NULL) {
1778             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1779                  current->con, current->con->name);
1780             continue;
1781         }
1782
1783         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1784         floating_move_to_pointer(floating_con);
1785     }
1786
1787     cmd_output->needs_tree_render = true;
1788     ysuccess(true);
1789 }
1790
1791 /*
1792  * Implementation of 'move scratchpad'.
1793  *
1794  */
1795 void cmd_move_scratchpad(I3_CMD) {
1796     DLOG("should move window to scratchpad\n");
1797     owindow *current;
1798
1799     HANDLE_EMPTY_MATCH;
1800
1801     TAILQ_FOREACH(current, &owindows, owindows) {
1802         DLOG("matching: %p / %s\n", current->con, current->con->name);
1803         scratchpad_move(current->con);
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 'scratchpad show'.
1813  *
1814  */
1815 void cmd_scratchpad_show(I3_CMD) {
1816     DLOG("should show scratchpad window\n");
1817     owindow *current;
1818
1819     if (match_is_empty(current_match)) {
1820         scratchpad_show(NULL);
1821     } else {
1822         TAILQ_FOREACH(current, &owindows, owindows) {
1823             DLOG("matching: %p / %s\n", current->con, current->con->name);
1824             scratchpad_show(current->con);
1825         }
1826     }
1827
1828     cmd_output->needs_tree_render = true;
1829     // XXX: default reply for now, make this a better reply
1830     ysuccess(true);
1831 }
1832
1833 /*
1834  * Implementation of 'title_format <format>'
1835  *
1836  */
1837 void cmd_title_format(I3_CMD, const char *format) {
1838     DLOG("setting title_format to \"%s\"\n", format);
1839     HANDLE_EMPTY_MATCH;
1840
1841     owindow *current;
1842     TAILQ_FOREACH(current, &owindows, owindows) {
1843         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1844         FREE(current->con->title_format);
1845
1846         /* If we only display the title without anything else, we can skip the parsing step,
1847          * so we remove the title format altogether. */
1848         if (strcasecmp(format, "%title") != 0) {
1849             current->con->title_format = sstrdup(format);
1850
1851             if (current->con->window != NULL) {
1852                 i3String *formatted_title = con_parse_title_format(current->con);
1853                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1854                 I3STRING_FREE(formatted_title);
1855             }
1856         } else {
1857             if (current->con->window != NULL) {
1858                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1859                 ewmh_update_visible_name(current->con->window->id, NULL);
1860             }
1861         }
1862
1863         if (current->con->window != NULL) {
1864             /* Make sure the window title is redrawn immediately. */
1865             current->con->window->name_x_changed = true;
1866         } else {
1867             /* For windowless containers we also need to force the redrawing. */
1868             FREE(current->con->deco_render_params);
1869         }
1870     }
1871
1872     cmd_output->needs_tree_render = true;
1873     ysuccess(true);
1874 }
1875
1876 /*
1877  * Implementation of 'rename workspace [<name>] to <name>'
1878  *
1879  */
1880 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1881     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1882         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1883         ysuccess(false);
1884         return;
1885     }
1886     if (old_name) {
1887         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1888     } else {
1889         LOG("Renaming current workspace to \"%s\"\n", new_name);
1890     }
1891
1892     Con *output, *workspace = NULL;
1893     if (old_name) {
1894         TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
1895         GREP_FIRST(workspace, output_get_content(output),
1896                    !strcasecmp(child->name, old_name));
1897     } else {
1898         workspace = con_get_workspace(focused);
1899         old_name = workspace->name;
1900     }
1901
1902     if (!workspace) {
1903         yerror("Old workspace \"%s\" not found", old_name);
1904         return;
1905     }
1906
1907     Con *check_dest = NULL;
1908     TAILQ_FOREACH(output, &(croot->nodes_head), nodes)
1909     GREP_FIRST(check_dest, output_get_content(output),
1910                !strcasecmp(child->name, new_name));
1911
1912     if (check_dest != NULL) {
1913         yerror("New workspace \"%s\" already exists", new_name);
1914         return;
1915     }
1916
1917     /* Change the name and try to parse it as a number. */
1918     /* old_name might refer to workspace->name, so copy it before free()ing */
1919     char *old_name_copy = sstrdup(old_name);
1920     FREE(workspace->name);
1921     workspace->name = sstrdup(new_name);
1922
1923     workspace->num = ws_name_to_number(new_name);
1924     LOG("num = %d\n", workspace->num);
1925
1926     /* By re-attaching, the sort order will be correct afterwards. */
1927     Con *previously_focused = focused;
1928     Con *parent = workspace->parent;
1929     con_detach(workspace);
1930     con_attach(workspace, parent, false);
1931
1932     /* Move the workspace to the correct output if it has an assignment */
1933     struct Workspace_Assignment *assignment = NULL;
1934     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
1935         if (assignment->output == NULL)
1936             continue;
1937         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
1938             continue;
1939         }
1940
1941         workspace_move_to_output(workspace, assignment->output);
1942
1943         if (previously_focused)
1944             workspace_show(con_get_workspace(previously_focused));
1945
1946         break;
1947     }
1948
1949     /* Restore the previous focus since con_attach messes with the focus. */
1950     con_focus(previously_focused);
1951
1952     cmd_output->needs_tree_render = true;
1953     ysuccess(true);
1954
1955     ipc_send_workspace_event("rename", workspace, NULL);
1956     ewmh_update_desktop_names();
1957     ewmh_update_desktop_viewport();
1958     ewmh_update_current_desktop();
1959
1960     startup_sequence_rename_workspace(old_name_copy, new_name);
1961     free(old_name_copy);
1962 }
1963
1964 /*
1965  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
1966  *
1967  */
1968 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
1969     int mode = M_DOCK;
1970     bool toggle = false;
1971     if (strcmp(bar_mode, "dock") == 0)
1972         mode = M_DOCK;
1973     else if (strcmp(bar_mode, "hide") == 0)
1974         mode = M_HIDE;
1975     else if (strcmp(bar_mode, "invisible") == 0)
1976         mode = M_INVISIBLE;
1977     else if (strcmp(bar_mode, "toggle") == 0)
1978         toggle = true;
1979     else {
1980         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
1981         return false;
1982     }
1983
1984     bool changed_sth = false;
1985     Barconfig *current = NULL;
1986     TAILQ_FOREACH(current, &barconfigs, configs) {
1987         if (bar_id && strcmp(current->id, bar_id) != 0)
1988             continue;
1989
1990         if (toggle)
1991             mode = (current->mode + 1) % 2;
1992
1993         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
1994         current->mode = mode;
1995         changed_sth = true;
1996
1997         if (bar_id)
1998             break;
1999     }
2000
2001     if (bar_id && !changed_sth) {
2002         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2003         return false;
2004     }
2005
2006     return true;
2007 }
2008
2009 /*
2010  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2011  *
2012  */
2013 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2014     int hidden_state = S_SHOW;
2015     bool toggle = false;
2016     if (strcmp(bar_hidden_state, "hide") == 0)
2017         hidden_state = S_HIDE;
2018     else if (strcmp(bar_hidden_state, "show") == 0)
2019         hidden_state = S_SHOW;
2020     else if (strcmp(bar_hidden_state, "toggle") == 0)
2021         toggle = true;
2022     else {
2023         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2024         return false;
2025     }
2026
2027     bool changed_sth = false;
2028     Barconfig *current = NULL;
2029     TAILQ_FOREACH(current, &barconfigs, configs) {
2030         if (bar_id && strcmp(current->id, bar_id) != 0)
2031             continue;
2032
2033         if (toggle)
2034             hidden_state = (current->hidden_state + 1) % 2;
2035
2036         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2037         current->hidden_state = hidden_state;
2038         changed_sth = true;
2039
2040         if (bar_id)
2041             break;
2042     }
2043
2044     if (bar_id && !changed_sth) {
2045         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2046         return false;
2047     }
2048
2049     return true;
2050 }
2051
2052 /*
2053  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2054  *
2055  */
2056 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2057     bool ret;
2058     if (strcmp(bar_type, "mode") == 0)
2059         ret = cmd_bar_mode(bar_value, bar_id);
2060     else if (strcmp(bar_type, "hidden_state") == 0)
2061         ret = cmd_bar_hidden_state(bar_value, bar_id);
2062     else {
2063         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2064         ret = false;
2065     }
2066
2067     ysuccess(ret);
2068     if (!ret)
2069         return;
2070
2071     update_barconfig();
2072 }
2073
2074 /*
2075  * Implementation of 'shmlog <size>|toggle|on|off'
2076  *
2077  */
2078 void cmd_shmlog(I3_CMD, const char *argument) {
2079     if (!strcmp(argument, "toggle"))
2080         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2081         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2082     else if (!strcmp(argument, "on"))
2083         shmlog_size = default_shmlog_size;
2084     else if (!strcmp(argument, "off"))
2085         shmlog_size = 0;
2086     else {
2087         /* If shm logging now, restart logging with the new size. */
2088         if (shmlog_size > 0) {
2089             shmlog_size = 0;
2090             LOG("Restarting shm logging...\n");
2091             init_logging();
2092         }
2093         shmlog_size = atoi(argument);
2094         /* Make a weakly attempt at ensuring the argument is valid. */
2095         if (shmlog_size <= 0)
2096             shmlog_size = default_shmlog_size;
2097     }
2098     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2099     init_logging();
2100     update_shmlog_atom();
2101     // XXX: default reply for now, make this a better reply
2102     ysuccess(true);
2103 }
2104
2105 /*
2106  * Implementation of 'debuglog toggle|on|off'
2107  *
2108  */
2109 void cmd_debuglog(I3_CMD, const char *argument) {
2110     bool logging = get_debug_logging();
2111     if (!strcmp(argument, "toggle")) {
2112         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2113         set_debug_logging(!logging);
2114     } else if (!strcmp(argument, "on") && !logging) {
2115         LOG("Enabling debug logging\n");
2116         set_debug_logging(true);
2117     } else if (!strcmp(argument, "off") && logging) {
2118         LOG("Disabling debug logging\n");
2119         set_debug_logging(false);
2120     }
2121     // XXX: default reply for now, make this a better reply
2122     ysuccess(true);
2123 }