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

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