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

   1 /*
   2  * vim:ts=4:sw=4:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
   6  *
   7  * commands.c: all command functions (see commands_parser.c)
   8  *
   9  */
  10 #include "all.h"
  11
  12 #include <stdint.h>
  13 #include <float.h>
  14 #include <stdarg.h>
  15
  16 #ifdef I3_ASAN_ENABLED
  17 #include <sanitizer/lsan_interface.h>
  18 #endif
  19
  20 #include "shmlog.h"
  21
  22 // Macros to make the YAJL API a bit easier to use.
  23 #define y(x, ...) (cmd_output->json_gen != NULL ? yajl_gen_##x(cmd_output->json_gen, ##__VA_ARGS__) : 0)
  24 #define ystr(str) (cmd_output->json_gen != NULL ? yajl_gen_string(cmd_output->json_gen, (unsigned char *)str, strlen(str)) : 0)
  25 #define ysuccess(success)                   \
  26     do {                                    \
  27         if (cmd_output->json_gen != NULL) { \
  28             y(map_open);                    \
  29             ystr("success");                \
  30             y(bool, success);               \
  31             y(map_close);                   \
  32         }                                   \
  33     } while (0)
  34 #define yerror(format, ...)                             \
  35     do {                                                \
  36         if (cmd_output->json_gen != NULL) {             \
  37             char *message;                              \
  38             sasprintf(&message, format, ##__VA_ARGS__); \
  39             y(map_open);                                \
  40             ystr("success");                            \
  41             y(bool, false);                             \
  42             ystr("error");                              \
  43             ystr(message);                              \
  44             y(map_close);                               \
  45             free(message);                              \
  46         }                                               \
  47     } while (0)
  48
  49 /** If an error occurred during parsing of the criteria, we want to exit instead
  50  * of relying on fallback behavior. See #2091. */
  51 #define HANDLE_INVALID_MATCH                                   \
  52     do {                                                       \
  53         if (current_match->error != NULL) {                    \
  54             yerror("Invalid match: %s", current_match->error); \
  55             return;                                            \
  56         }                                                      \
  57     } while (0)
  58
  59 /** When the command did not include match criteria (!), we use the currently
  60  * focused container. Do not confuse this case with a command which included
  61  * criteria but which did not match any windows. This macro has to be called in
  62  * every command.
  63  */
  64 #define HANDLE_EMPTY_MATCH                              \
  65     do {                                                \
  66         HANDLE_INVALID_MATCH;                           \
  67                                                         \
  68         if (match_is_empty(current_match)) {            \
  69             while (!TAILQ_EMPTY(&owindows)) {           \
  70                 owindow *ow = TAILQ_FIRST(&owindows);   \
  71                 TAILQ_REMOVE(&owindows, ow, owindows);  \
  72                 free(ow);                               \
  73             }                                           \
  74             owindow *ow = smalloc(sizeof(owindow));     \
  75             ow->con = focused;                          \
  76             TAILQ_INIT(&owindows);                      \
  77             TAILQ_INSERT_TAIL(&owindows, ow, owindows); \
  78         }                                               \
  79     } while (0)
  80
  81 /*
  82  * Checks whether we switched to a new workspace and returns false in that case,
  83  * signaling that further workspace switching should be done by the calling function
  84  * If not, calls workspace_back_and_forth() if workspace_auto_back_and_forth is set
  85  * and return true, signaling that no further workspace switching should occur in the calling function.
  86  *
  87  */
  88 static bool maybe_back_and_forth(struct CommandResultIR *cmd_output, const char *name) {
  89     Con *ws = con_get_workspace(focused);
  90
  91     /* If we switched to a different workspace, do nothing */
  92     if (strcmp(ws->name, name) != 0)
  93         return false;
  94
  95     DLOG("This workspace is already focused.\n");
  96     if (config.workspace_auto_back_and_forth) {
  97         workspace_back_and_forth();
  98         cmd_output->needs_tree_render = true;
  99     }
 100     return true;
 101 }
 102
 103 /*
 104  * Return the passed workspace unless it is the current one and auto back and
 105  * forth is enabled, in which case the back_and_forth workspace is returned.
 106  */
 107 static Con *maybe_auto_back_and_forth_workspace(Con *workspace) {
 108     Con *current, *baf;
 109
 110     if (!config.workspace_auto_back_and_forth)
 111         return workspace;
 112
 113     current = con_get_workspace(focused);
 114
 115     if (current == workspace) {
 116         baf = workspace_back_and_forth_get();
 117         if (baf != NULL) {
 118             DLOG("Substituting workspace with back_and_forth, as it is focused.\n");
 119             return baf;
 120         }
 121     }
 122
 123     return workspace;
 124 }
 125
 126 /*******************************************************************************
 127  * Criteria functions.
 128  ******************************************************************************/
 129
 130 /*
 131  * Helper data structure for an operation window (window on which the operation
 132  * will be performed). Used to build the TAILQ owindows.
 133  *
 134  */
 135 typedef struct owindow {
 136     Con *con;
 137
 138     TAILQ_ENTRY(owindow)
 139     owindows;
 140 } owindow;
 141
 142 typedef TAILQ_HEAD(owindows_head, owindow) owindows_head;
 143
 144 static owindows_head owindows;
 145
 146 /*
 147  * Initializes the specified 'Match' data structure and the initial state of
 148  * commands.c for matching target windows of a command.
 149  *
 150  */
 151 void cmd_criteria_init(I3_CMD) {
 152     Con *con;
 153     owindow *ow;
 154
 155     DLOG("Initializing criteria, current_match = %p\n", current_match);
 156     match_free(current_match);
 157     match_init(current_match);
 158     while (!TAILQ_EMPTY(&owindows)) {
 159         ow = TAILQ_FIRST(&owindows);
 160         TAILQ_REMOVE(&owindows, ow, owindows);
 161         free(ow);
 162     }
 163     TAILQ_INIT(&owindows);
 164     /* copy all_cons */
 165     TAILQ_FOREACH(con, &all_cons, all_cons) {
 166         ow = smalloc(sizeof(owindow));
 167         ow->con = con;
 168         TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 169     }
 170 }
 171
 172 /*
 173  * A match specification just finished (the closing square bracket was found),
 174  * so we filter the list of owindows.
 175  *
 176  */
 177 void cmd_criteria_match_windows(I3_CMD) {
 178     owindow *next, *current;
 179
 180     DLOG("match specification finished, matching...\n");
 181     /* copy the old list head to iterate through it and start with a fresh
 182      * list which will contain only matching windows */
 183     struct owindows_head old = owindows;
 184     TAILQ_INIT(&owindows);
 185     for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 186         /* make a copy of the next pointer and advance the pointer to the
 187          * next element as we are going to invalidate the element’s
 188          * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 189         current = next;
 190         next = TAILQ_NEXT(next, owindows);
 191
 192         DLOG("checking if con %p / %s matches\n", current->con, current->con->name);
 193
 194         /* We use this flag to prevent matching on window-less containers if
 195          * only window-specific criteria were specified. */
 196         bool accept_match = false;
 197
 198         if (current_match->con_id != NULL) {
 199             accept_match = true;
 200
 201             if (current_match->con_id == current->con) {
 202                 DLOG("con_id matched.\n");
 203             } else {
 204                 DLOG("con_id does not match.\n");
 205                 FREE(current);
 206                 continue;
 207             }
 208         }
 209
 210         if (current_match->mark != NULL && !TAILQ_EMPTY(&(current->con->marks_head))) {
 211             accept_match = true;
 212             bool matched_by_mark = false;
 213
 214             mark_t *mark;
 215             TAILQ_FOREACH(mark, &(current->con->marks_head), marks) {
 216                 if (!regex_matches(current_match->mark, mark->name))
 217                     continue;
 218
 219                 DLOG("match by mark\n");
 220                 matched_by_mark = true;
 221                 break;
 222             }
 223
 224             if (!matched_by_mark) {
 225                 DLOG("mark does not match.\n");
 226                 FREE(current);
 227                 continue;
 228             }
 229         }
 230
 231         if (current->con->window != NULL) {
 232             if (match_matches_window(current_match, current->con->window)) {
 233                 DLOG("matches window!\n");
 234                 accept_match = true;
 235             } else {
 236                 DLOG("doesn't match\n");
 237                 FREE(current);
 238                 continue;
 239             }
 240         }
 241
 242         if (accept_match) {
 243             TAILQ_INSERT_TAIL(&owindows, current, owindows);
 244         } else {
 245             FREE(current);
 246             continue;
 247         }
 248     }
 249
 250     TAILQ_FOREACH(current, &owindows, owindows) {
 251         DLOG("matching: %p / %s\n", current->con, current->con->name);
 252     }
 253 }
 254
 255 /*
 256  * Interprets a ctype=cvalue pair and adds it to the current match
 257  * specification.
 258  *
 259  */
 260 void cmd_criteria_add(I3_CMD, const char *ctype, const char *cvalue) {
 261     match_parse_property(current_match, ctype, cvalue);
 262 }
 263
 264 static void move_matches_to_workspace(Con *ws) {
 265     owindow *current;
 266     TAILQ_FOREACH(current, &owindows, owindows) {
 267         DLOG("matching: %p / %s\n", current->con, current->con->name);
 268         con_move_to_workspace(current->con, ws, true, false, false);
 269     }
 270 }
 271
 272 /*
 273  * Implementation of 'move [window|container] [to] workspace
 274  * next|prev|next_on_output|prev_on_output|current'.
 275  *
 276  */
 277 void cmd_move_con_to_workspace(I3_CMD, const char *which) {
 278     DLOG("which=%s\n", which);
 279
 280     /* We have nothing to move:
 281      *  when criteria was specified but didn't match any window or
 282      *  when criteria wasn't specified and we don't have any window focused. */
 283     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 284         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 285          !con_has_children(focused))) {
 286         ysuccess(false);
 287         return;
 288     }
 289
 290     HANDLE_EMPTY_MATCH;
 291
 292     /* get the workspace */
 293     Con *ws;
 294     if (strcmp(which, "next") == 0)
 295         ws = workspace_next();
 296     else if (strcmp(which, "prev") == 0)
 297         ws = workspace_prev();
 298     else if (strcmp(which, "next_on_output") == 0)
 299         ws = workspace_next_on_output();
 300     else if (strcmp(which, "prev_on_output") == 0)
 301         ws = workspace_prev_on_output();
 302     else if (strcmp(which, "current") == 0)
 303         ws = con_get_workspace(focused);
 304     else {
 305         ELOG("BUG: called with which=%s\n", which);
 306         ysuccess(false);
 307         return;
 308     }
 309
 310     move_matches_to_workspace(ws);
 311
 312     cmd_output->needs_tree_render = true;
 313     // XXX: default reply for now, make this a better reply
 314     ysuccess(true);
 315 }
 316
 317 /**
 318  * Implementation of 'move [window|container] [to] workspace back_and_forth'.
 319  *
 320  */
 321 void cmd_move_con_to_workspace_back_and_forth(I3_CMD) {
 322     Con *ws = workspace_back_and_forth_get();
 323     if (ws == NULL) {
 324         yerror("No workspace was previously active.");
 325         return;
 326     }
 327
 328     HANDLE_EMPTY_MATCH;
 329
 330     move_matches_to_workspace(ws);
 331
 332     cmd_output->needs_tree_render = true;
 333     // XXX: default reply for now, make this a better reply
 334     ysuccess(true);
 335 }
 336
 337 /*
 338  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace <name>'.
 339  *
 340  */
 341 void cmd_move_con_to_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 342     if (strncasecmp(name, "__", strlen("__")) == 0) {
 343         LOG("You cannot move containers to i3-internal workspaces (\"%s\").\n", name);
 344         ysuccess(false);
 345         return;
 346     }
 347
 348     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 349
 350     /* We have nothing to move:
 351      *  when criteria was specified but didn't match any window or
 352      *  when criteria wasn't specified and we don't have any window focused. */
 353     if (!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) {
 354         ELOG("No windows match your criteria, cannot move.\n");
 355         ysuccess(false);
 356         return;
 357     } else if (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 358                !con_has_children(focused)) {
 359         ysuccess(false);
 360         return;
 361     }
 362
 363     LOG("should move window to workspace %s\n", name);
 364     /* get the workspace */
 365     Con *ws = workspace_get(name, NULL);
 366
 367     if (!no_auto_back_and_forth)
 368         ws = maybe_auto_back_and_forth_workspace(ws);
 369
 370     HANDLE_EMPTY_MATCH;
 371
 372     move_matches_to_workspace(ws);
 373
 374     cmd_output->needs_tree_render = true;
 375     // XXX: default reply for now, make this a better reply
 376     ysuccess(true);
 377 }
 378
 379 /*
 380  * Implementation of 'move [--no-auto-back-and-forth] [window|container] [to] workspace number <name>'.
 381  *
 382  */
 383 void cmd_move_con_to_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 384     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 385
 386     /* We have nothing to move:
 387      *  when criteria was specified but didn't match any window or
 388      *  when criteria wasn't specified and we don't have any window focused. */
 389     if ((!match_is_empty(current_match) && TAILQ_EMPTY(&owindows)) ||
 390         (match_is_empty(current_match) && focused->type == CT_WORKSPACE &&
 391          !con_has_children(focused))) {
 392         ysuccess(false);
 393         return;
 394     }
 395
 396     LOG("should move window to workspace %s\n", which);
 397
 398     long parsed_num = ws_name_to_number(which);
 399     if (parsed_num == -1) {
 400         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 401         yerror("Could not parse number \"%s\"", which);
 402         return;
 403     }
 404
 405     Con *ws = get_existing_workspace_by_num(parsed_num);
 406     if (!ws) {
 407         ws = workspace_get(which, NULL);
 408     }
 409
 410     if (!no_auto_back_and_forth)
 411         ws = maybe_auto_back_and_forth_workspace(ws);
 412
 413     HANDLE_EMPTY_MATCH;
 414
 415     move_matches_to_workspace(ws);
 416
 417     cmd_output->needs_tree_render = true;
 418     // XXX: default reply for now, make this a better reply
 419     ysuccess(true);
 420 }
 421
 422 /*
 423  * Convert a string direction ("left", "right", etc.) to a direction_t. Assumes
 424  * valid direction string.
 425  */
 426 static direction_t parse_direction(const char *str) {
 427     if (strcmp(str, "left") == 0) {
 428         return D_LEFT;
 429     } else if (strcmp(str, "right") == 0) {
 430         return D_RIGHT;
 431     } else if (strcmp(str, "up") == 0) {
 432         return D_UP;
 433     } else if (strcmp(str, "down") == 0) {
 434         return D_DOWN;
 435     } else {
 436         ELOG("Invalid direction. This is a parser bug.\n");
 437         assert(false);
 438     }
 439 }
 440
 441 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction_str, Con *floating_con, int px) {
 442     Rect old_rect = floating_con->rect;
 443     Con *focused_con = con_descend_focused(floating_con);
 444
 445     direction_t direction;
 446     if (strcmp(direction_str, "height") == 0) {
 447         direction = D_DOWN;
 448     } else if (strcmp(direction_str, "width") == 0) {
 449         direction = D_RIGHT;
 450     } else {
 451         direction = parse_direction(direction_str);
 452     }
 453     orientation_t orientation = orientation_from_direction(direction);
 454
 455     /* ensure that resize will take place even if pixel increment is smaller than
 456      * height increment or width increment.
 457      * fixes #1011 */
 458     const i3Window *window = focused_con->window;
 459     if (window != NULL) {
 460         if (orientation == VERT) {
 461             if (px < 0) {
 462                 px = (-px < window->height_increment) ? -window->height_increment : px;
 463             } else {
 464                 px = (px < window->height_increment) ? window->height_increment : px;
 465             }
 466         } else {
 467             if (px < 0) {
 468                 px = (-px < window->width_increment) ? -window->width_increment : px;
 469             } else {
 470                 px = (px < window->width_increment) ? window->width_increment : px;
 471             }
 472         }
 473     }
 474
 475     if (orientation == VERT) {
 476         floating_con->rect.height += px;
 477     } else {
 478         floating_con->rect.width += px;
 479     }
 480     floating_check_size(floating_con);
 481
 482     /* Did we actually resize anything or did the size constraints prevent us?
 483      * If we could not resize, exit now to not move the window. */
 484     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0) {
 485         return;
 486     }
 487
 488     if (direction == D_UP) {
 489         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 490     } else if (direction == D_LEFT) {
 491         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 492     }
 493
 494     /* If this is a scratchpad window, don't auto center it from now on. */
 495     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH) {
 496         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 497     }
 498 }
 499
 500 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 501     LOG("tiling resize\n");
 502     Con *second = NULL;
 503     Con *first = current;
 504     direction_t search_direction = parse_direction(direction);
 505
 506     bool res = resize_find_tiling_participants(&first, &second, search_direction, false);
 507     if (!res) {
 508         LOG("No second container in this direction found.\n");
 509         ysuccess(false);
 510         return false;
 511     }
 512
 513     /* get the default percentage */
 514     int children = con_num_children(first->parent);
 515     LOG("ins. %d children\n", children);
 516     double percentage = 1.0 / children;
 517     LOG("default percentage = %f\n", percentage);
 518
 519     /* resize */
 520     LOG("first->percent before = %f\n", first->percent);
 521     LOG("second->percent before = %f\n", second->percent);
 522     if (first->percent == 0.0)
 523         first->percent = percentage;
 524     if (second->percent == 0.0)
 525         second->percent = percentage;
 526     double new_first_percent = first->percent + ((double)ppt / 100.0);
 527     double new_second_percent = second->percent - ((double)ppt / 100.0);
 528     LOG("new_first_percent = %f\n", new_first_percent);
 529     LOG("new_second_percent = %f\n", new_second_percent);
 530     /* Ensure that the new percentages are positive. */
 531     if (new_first_percent > 0.0 && new_second_percent > 0.0) {
 532         first->percent = new_first_percent;
 533         second->percent = new_second_percent;
 534         LOG("first->percent after = %f\n", first->percent);
 535         LOG("second->percent after = %f\n", second->percent);
 536     } else {
 537         LOG("Not resizing, already at minimum size\n");
 538     }
 539
 540     return true;
 541 }
 542
 543 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 544     LOG("width/height resize\n");
 545
 546     /* get the appropriate current container (skip stacked/tabbed cons) */
 547     Con *dummy = NULL;
 548     direction_t search_direction = (strcmp(direction, "width") == 0 ? D_LEFT : D_DOWN);
 549     bool search_result = resize_find_tiling_participants(&current, &dummy, search_direction, true);
 550     if (search_result == false) {
 551         ysuccess(false);
 552         return false;
 553     }
 554
 555     /* get the default percentage */
 556     int children = con_num_children(current->parent);
 557     LOG("ins. %d children\n", children);
 558     double percentage = 1.0 / children;
 559     LOG("default percentage = %f\n", percentage);
 560
 561     /* Ensure all the other children have a percentage set. */
 562     Con *child;
 563     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 564         LOG("child->percent = %f (child %p)\n", child->percent, child);
 565         if (child->percent == 0.0)
 566             child->percent = percentage;
 567     }
 568
 569     double new_current_percent = current->percent + ((double)ppt / 100.0);
 570     double subtract_percent = ((double)ppt / 100.0) / (children - 1);
 571     LOG("new_current_percent = %f\n", new_current_percent);
 572     LOG("subtract_percent = %f\n", subtract_percent);
 573     /* Ensure that the new percentages are positive. */
 574     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 575         if (child == current)
 576             continue;
 577         if (child->percent - subtract_percent <= 0.0) {
 578             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 579             ysuccess(false);
 580             return false;
 581         }
 582     }
 583     if (new_current_percent <= 0.0) {
 584         LOG("Not resizing, already at minimum size\n");
 585         ysuccess(false);
 586         return false;
 587     }
 588
 589     current->percent = new_current_percent;
 590     LOG("current->percent after = %f\n", current->percent);
 591
 592     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 593         if (child == current)
 594             continue;
 595         child->percent -= subtract_percent;
 596         LOG("child->percent after (%p) = %f\n", child, child->percent);
 597     }
 598
 599     return true;
 600 }
 601
 602 /*
 603  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 604  *
 605  */
 606 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 607     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 608     if (strcmp(way, "shrink") == 0) {
 609         resize_px *= -1;
 610         resize_ppt *= -1;
 611     }
 612
 613     HANDLE_EMPTY_MATCH;
 614
 615     owindow *current;
 616     TAILQ_FOREACH(current, &owindows, owindows) {
 617         /* Don't handle dock windows (issue #1201) */
 618         if (current->con->window && current->con->window->dock) {
 619             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 620             continue;
 621         }
 622
 623         Con *floating_con;
 624         if ((floating_con = con_inside_floating(current->con))) {
 625             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 626         } else {
 627             if (strcmp(direction, "width") == 0 ||
 628                 strcmp(direction, "height") == 0) {
 629                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 630                                                     current->con, way, direction, resize_ppt))
 631                     return;
 632             } else {
 633                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 634                                                  current->con, way, direction, resize_ppt))
 635                     return;
 636             }
 637         }
 638     }
 639
 640     cmd_output->needs_tree_render = true;
 641     // XXX: default reply for now, make this a better reply
 642     ysuccess(true);
 643 }
 644
 645 /*
 646  * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
 647  *
 648  */
 649 void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
 650     DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
 651     if (cwidth < 0 || cheight < 0) {
 652         ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
 653         return;
 654     }
 655
 656     HANDLE_EMPTY_MATCH;
 657
 658     owindow *current;
 659     bool success = true;
 660     TAILQ_FOREACH(current, &owindows, owindows) {
 661         Con *floating_con;
 662         if ((floating_con = con_inside_floating(current->con))) {
 663             Con *output = con_get_output(floating_con);
 664             if (cwidth == 0) {
 665                 cwidth = floating_con->rect.width;
 666             } else if (mode_width && strcmp(mode_width, "ppt") == 0) {
 667                 cwidth = output->rect.width * ((double)cwidth / 100.0);
 668             }
 669             if (cheight == 0) {
 670                 cheight = floating_con->rect.height;
 671             } else if (mode_height && strcmp(mode_height, "ppt") == 0) {
 672                 cheight = output->rect.height * ((double)cheight / 100.0);
 673             }
 674             floating_resize(floating_con, cwidth, cheight);
 675         } else {
 676             if (current->con->window && current->con->window->dock) {
 677                 DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 678                 continue;
 679             }
 680
 681             if (cwidth > 0 && mode_width && strcmp(mode_width, "ppt") == 0) {
 682                 /* get the appropriate current container (skip stacked/tabbed cons) */
 683                 Con *target = current->con;
 684                 Con *dummy;
 685                 resize_find_tiling_participants(&target, &dummy, D_LEFT, true);
 686
 687                 /* Calculate new size for the target container */
 688                 double current_percent = target->percent;
 689                 char *action_string;
 690                 long adjustment;
 691
 692                 if (current_percent > cwidth) {
 693                     action_string = "shrink";
 694                     adjustment = (int)(current_percent * 100) - cwidth;
 695                 } else {
 696                     action_string = "grow";
 697                     adjustment = cwidth - (int)(current_percent * 100);
 698                 }
 699
 700                 /* perform resizing and report failure if not possible */
 701                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 702                                                     target, action_string, "width", adjustment)) {
 703                     success = false;
 704                 }
 705             }
 706
 707             if (cheight > 0 && mode_height && strcmp(mode_height, "ppt") == 0) {
 708                 /* get the appropriate current container (skip stacked/tabbed cons) */
 709                 Con *target = current->con;
 710                 Con *dummy;
 711                 resize_find_tiling_participants(&target, &dummy, D_DOWN, true);
 712
 713                 /* Calculate new size for the target container */
 714                 double current_percent = target->percent;
 715                 char *action_string;
 716                 long adjustment;
 717
 718                 if (current_percent > cheight) {
 719                     action_string = "shrink";
 720                     adjustment = (int)(current_percent * 100) - cheight;
 721                 } else {
 722                     action_string = "grow";
 723                     adjustment = cheight - (int)(current_percent * 100);
 724                 }
 725
 726                 /* perform resizing and report failure if not possible */
 727                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 728                                                     target, action_string, "height", adjustment)) {
 729                     success = false;
 730                 }
 731             }
 732         }
 733     }
 734
 735     cmd_output->needs_tree_render = true;
 736     ysuccess(success);
 737 }
 738
 739 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 740     if (border_style == BS_NONE) {
 741         return 0;
 742     }
 743     if (border_width >= 0) {
 744         return logical_px(border_width);
 745     }
 746
 747     const bool is_floating = con_inside_floating(con) != NULL;
 748     /* Load the configured defaults. */
 749     if (is_floating && border_style == config.default_floating_border) {
 750         return config.default_floating_border_width;
 751     } else if (!is_floating && border_style == config.default_border) {
 752         return config.default_border_width;
 753     } else {
 754         /* Use some hardcoded values. */
 755         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 756     }
 757 }
 758
 759 /*
 760  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 761  *
 762  */
 763 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 764     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 765     owindow *current;
 766
 767     HANDLE_EMPTY_MATCH;
 768
 769     TAILQ_FOREACH(current, &owindows, owindows) {
 770         DLOG("matching: %p / %s\n", current->con, current->con->name);
 771
 772         border_style_t border_style;
 773         if (strcmp(border_style_str, "toggle") == 0) {
 774             border_style = (current->con->border_style + 1) % 3;
 775         } else if (strcmp(border_style_str, "normal") == 0) {
 776             border_style = BS_NORMAL;
 777         } else if (strcmp(border_style_str, "pixel") == 0) {
 778             border_style = BS_PIXEL;
 779         } else if (strcmp(border_style_str, "none") == 0) {
 780             border_style = BS_NONE;
 781         } else {
 782             ELOG("BUG: called with border_style=%s\n", border_style_str);
 783             ysuccess(false);
 784             return;
 785         }
 786
 787         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 788         con_set_border_style(current->con, border_style, con_border_width);
 789     }
 790
 791     cmd_output->needs_tree_render = true;
 792     // XXX: default reply for now, make this a better reply
 793     ysuccess(true);
 794 }
 795
 796 /*
 797  * Implementation of 'nop <comment>'.
 798  *
 799  */
 800 void cmd_nop(I3_CMD, const char *comment) {
 801     LOG("-------------------------------------------------\n");
 802     LOG("  NOP: %s\n", comment);
 803     LOG("-------------------------------------------------\n");
 804     ysuccess(true);
 805 }
 806
 807 /*
 808  * Implementation of 'append_layout <path>'.
 809  *
 810  */
 811 void cmd_append_layout(I3_CMD, const char *cpath) {
 812     LOG("Appending layout \"%s\"\n", cpath);
 813
 814     /* Make sure we allow paths like '~/.i3/layout.json' */
 815     char *path = resolve_tilde(cpath);
 816
 817     char *buf = NULL;
 818     ssize_t len;
 819     if ((len = slurp(path, &buf)) < 0) {
 820         /* slurp already logged an error. */
 821         goto out;
 822     }
 823
 824     if (!json_validate(buf, len)) {
 825         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 826         yerror("Could not parse \"%s\" as JSON.", path);
 827         goto out;
 828     }
 829
 830     json_content_t content = json_determine_content(buf, len);
 831     LOG("JSON content = %d\n", content);
 832     if (content == JSON_CONTENT_UNKNOWN) {
 833         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 834         yerror("Could not determine the contents of \"%s\".", path);
 835         goto out;
 836     }
 837
 838     Con *parent = focused;
 839     if (content == JSON_CONTENT_WORKSPACE) {
 840         parent = output_get_content(con_get_output(parent));
 841     } else {
 842         /* We need to append the layout to a split container, since a leaf
 843          * container must not have any children (by definition).
 844          * Note that we explicitly check for workspaces, since they are okay for
 845          * this purpose, but con_accepts_window() returns false for workspaces. */
 846         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 847             parent = parent->parent;
 848     }
 849     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 850     char *errormsg = NULL;
 851     tree_append_json(parent, buf, len, &errormsg);
 852     if (errormsg != NULL) {
 853         yerror(errormsg);
 854         free(errormsg);
 855         /* Note that we continue executing since tree_append_json() has
 856          * side-effects — user-provided layouts can be partly valid, partly
 857          * invalid, leading to half of the placeholder containers being
 858          * created. */
 859     } else {
 860         ysuccess(true);
 861     }
 862
 863     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 864     // false); should be enough, but when sending 'workspace 4; append_layout
 865     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 866     // is not executed yet and will be batched with append_layout’s
 867     // needs_tree_render after the parser finished. We should check if that is
 868     // necessary at all.
 869     render_con(croot, false);
 870
 871     restore_open_placeholder_windows(parent);
 872
 873     if (content == JSON_CONTENT_WORKSPACE)
 874         ipc_send_workspace_event("restored", parent, NULL);
 875
 876     cmd_output->needs_tree_render = true;
 877 out:
 878     free(path);
 879     free(buf);
 880 }
 881
 882 /*
 883  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 884  *
 885  */
 886 void cmd_workspace(I3_CMD, const char *which) {
 887     Con *ws;
 888
 889     DLOG("which=%s\n", which);
 890
 891     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 892         LOG("Cannot switch workspace while in global fullscreen\n");
 893         ysuccess(false);
 894         return;
 895     }
 896
 897     if (strcmp(which, "next") == 0)
 898         ws = workspace_next();
 899     else if (strcmp(which, "prev") == 0)
 900         ws = workspace_prev();
 901     else if (strcmp(which, "next_on_output") == 0)
 902         ws = workspace_next_on_output();
 903     else if (strcmp(which, "prev_on_output") == 0)
 904         ws = workspace_prev_on_output();
 905     else {
 906         ELOG("BUG: called with which=%s\n", which);
 907         ysuccess(false);
 908         return;
 909     }
 910
 911     workspace_show(ws);
 912
 913     cmd_output->needs_tree_render = true;
 914     // XXX: default reply for now, make this a better reply
 915     ysuccess(true);
 916 }
 917
 918 /*
 919  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 920  *
 921  */
 922 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 923     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 924
 925     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 926         LOG("Cannot switch workspace while in global fullscreen\n");
 927         ysuccess(false);
 928         return;
 929     }
 930
 931     long parsed_num = ws_name_to_number(which);
 932     if (parsed_num == -1) {
 933         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 934         yerror("Could not parse number \"%s\"", which);
 935         return;
 936     }
 937
 938     Con *workspace = get_existing_workspace_by_num(parsed_num);
 939     if (!workspace) {
 940         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 941         ysuccess(true);
 942         workspace_show_by_name(which);
 943         cmd_output->needs_tree_render = true;
 944         return;
 945     }
 946     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 947         ysuccess(true);
 948         return;
 949     }
 950     workspace_show(workspace);
 951
 952     cmd_output->needs_tree_render = true;
 953     // XXX: default reply for now, make this a better reply
 954     ysuccess(true);
 955 }
 956
 957 /*
 958  * Implementation of 'workspace back_and_forth'.
 959  *
 960  */
 961 void cmd_workspace_back_and_forth(I3_CMD) {
 962     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 963         LOG("Cannot switch workspace while in global fullscreen\n");
 964         ysuccess(false);
 965         return;
 966     }
 967
 968     workspace_back_and_forth();
 969
 970     cmd_output->needs_tree_render = true;
 971     // XXX: default reply for now, make this a better reply
 972     ysuccess(true);
 973 }
 974
 975 /*
 976  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 977  *
 978  */
 979 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 980     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 981
 982     if (strncasecmp(name, "__", strlen("__")) == 0) {
 983         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 984         ysuccess(false);
 985         return;
 986     }
 987
 988     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 989         LOG("Cannot switch workspace while in global fullscreen\n");
 990         ysuccess(false);
 991         return;
 992     }
 993
 994     DLOG("should switch to workspace %s\n", name);
 995     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 996         ysuccess(true);
 997         return;
 998     }
 999     workspace_show_by_name(name);
1000
1001     cmd_output->needs_tree_render = true;
1002     // XXX: default reply for now, make this a better reply
1003     ysuccess(true);
1004 }
1005
1006 /*
1007  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
1008  *
1009  */
1010 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
1011     HANDLE_EMPTY_MATCH;
1012
1013     owindow *current = TAILQ_FIRST(&owindows);
1014     if (current == NULL) {
1015         ysuccess(false);
1016         return;
1017     }
1018
1019     /* Marks must be unique, i.e., no two windows must have the same mark. */
1020     if (current != TAILQ_LAST(&owindows, owindows_head)) {
1021         yerror("A mark must not be put onto more than one window");
1022         return;
1023     }
1024
1025     DLOG("matching: %p / %s\n", current->con, current->con->name);
1026
1027     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
1028     if (toggle != NULL) {
1029         con_mark_toggle(current->con, mark, mark_mode);
1030     } else {
1031         con_mark(current->con, mark, mark_mode);
1032     }
1033
1034     cmd_output->needs_tree_render = true;
1035     // XXX: default reply for now, make this a better reply
1036     ysuccess(true);
1037 }
1038
1039 /*
1040  * Implementation of 'unmark [mark]'
1041  *
1042  */
1043 void cmd_unmark(I3_CMD, const char *mark) {
1044     if (match_is_empty(current_match)) {
1045         con_unmark(NULL, mark);
1046     } else {
1047         owindow *current;
1048         TAILQ_FOREACH(current, &owindows, owindows) {
1049             con_unmark(current->con, mark);
1050         }
1051     }
1052
1053     cmd_output->needs_tree_render = true;
1054     // XXX: default reply for now, make this a better reply
1055     ysuccess(true);
1056 }
1057
1058 /*
1059  * Implementation of 'mode <string>'.
1060  *
1061  */
1062 void cmd_mode(I3_CMD, const char *mode) {
1063     DLOG("mode=%s\n", mode);
1064     switch_mode(mode);
1065
1066     // XXX: default reply for now, make this a better reply
1067     ysuccess(true);
1068 }
1069
1070 /*
1071  * Implementation of 'move [window|container] [to] output <str>'.
1072  *
1073  */
1074 void cmd_move_con_to_output(I3_CMD, const char *name) {
1075     DLOG("Should move window to output \"%s\".\n", name);
1076     HANDLE_EMPTY_MATCH;
1077
1078     owindow *current;
1079     bool had_error = false;
1080     TAILQ_FOREACH(current, &owindows, owindows) {
1081         DLOG("matching: %p / %s\n", current->con, current->con->name);
1082
1083         had_error |= !con_move_to_output_name(current->con, name, true);
1084     }
1085
1086     cmd_output->needs_tree_render = true;
1087     ysuccess(!had_error);
1088 }
1089
1090 /*
1091  * Implementation of 'move [container|window] [to] mark <str>'.
1092  *
1093  */
1094 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1095     DLOG("moving window to mark \"%s\"\n", mark);
1096
1097     HANDLE_EMPTY_MATCH;
1098
1099     bool result = true;
1100     owindow *current;
1101     TAILQ_FOREACH(current, &owindows, owindows) {
1102         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1103         result &= con_move_to_mark(current->con, mark);
1104     }
1105
1106     cmd_output->needs_tree_render = true;
1107     ysuccess(result);
1108 }
1109
1110 /*
1111  * Implementation of 'floating enable|disable|toggle'
1112  *
1113  */
1114 void cmd_floating(I3_CMD, const char *floating_mode) {
1115     owindow *current;
1116
1117     DLOG("floating_mode=%s\n", floating_mode);
1118
1119     HANDLE_EMPTY_MATCH;
1120
1121     TAILQ_FOREACH(current, &owindows, owindows) {
1122         DLOG("matching: %p / %s\n", current->con, current->con->name);
1123         if (strcmp(floating_mode, "toggle") == 0) {
1124             DLOG("should toggle mode\n");
1125             toggle_floating_mode(current->con, false);
1126         } else {
1127             DLOG("should switch mode to %s\n", floating_mode);
1128             if (strcmp(floating_mode, "enable") == 0) {
1129                 floating_enable(current->con, false);
1130             } else {
1131                 floating_disable(current->con, false);
1132             }
1133         }
1134     }
1135
1136     cmd_output->needs_tree_render = true;
1137     // XXX: default reply for now, make this a better reply
1138     ysuccess(true);
1139 }
1140
1141 /*
1142  * Implementation of 'move workspace to [output] <str>'.
1143  *
1144  */
1145 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1146     DLOG("should move workspace to output %s\n", name);
1147
1148     HANDLE_EMPTY_MATCH;
1149
1150     owindow *current;
1151     TAILQ_FOREACH(current, &owindows, owindows) {
1152         Con *ws = con_get_workspace(current->con);
1153         if (con_is_internal(ws)) {
1154             continue;
1155         }
1156
1157         Output *current_output = get_output_for_con(ws);
1158         if (current_output == NULL) {
1159             ELOG("Cannot get current output. This is a bug in i3.\n");
1160             ysuccess(false);
1161             return;
1162         }
1163
1164         Output *target_output = get_output_from_string(current_output, name);
1165         if (!target_output) {
1166             ELOG("Could not get output from string \"%s\"\n", name);
1167             ysuccess(false);
1168             return;
1169         }
1170
1171         bool success = workspace_move_to_output(ws, target_output);
1172         if (!success) {
1173             ELOG("Failed to move workspace to output.\n");
1174             ysuccess(false);
1175             return;
1176         }
1177     }
1178
1179     cmd_output->needs_tree_render = true;
1180     // XXX: default reply for now, make this a better reply
1181     ysuccess(true);
1182 }
1183
1184 /*
1185  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1186  *
1187  */
1188 void cmd_split(I3_CMD, const char *direction) {
1189     HANDLE_EMPTY_MATCH;
1190
1191     owindow *current;
1192     LOG("splitting in direction %c\n", direction[0]);
1193     TAILQ_FOREACH(current, &owindows, owindows) {
1194         if (con_is_docked(current->con)) {
1195             ELOG("Cannot split a docked container, skipping.\n");
1196             continue;
1197         }
1198
1199         DLOG("matching: %p / %s\n", current->con, current->con->name);
1200         if (direction[0] == 't') {
1201             layout_t current_layout;
1202             if (current->con->type == CT_WORKSPACE) {
1203                 current_layout = current->con->layout;
1204             } else {
1205                 current_layout = current->con->parent->layout;
1206             }
1207             /* toggling split orientation */
1208             if (current_layout == L_SPLITH) {
1209                 tree_split(current->con, VERT);
1210             } else {
1211                 tree_split(current->con, HORIZ);
1212             }
1213         } else {
1214             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1215         }
1216     }
1217
1218     cmd_output->needs_tree_render = true;
1219     // XXX: default reply for now, make this a better reply
1220     ysuccess(true);
1221 }
1222
1223 /*
1224  * Implementation of 'kill [window|client]'.
1225  *
1226  */
1227 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1228     if (kill_mode_str == NULL)
1229         kill_mode_str = "window";
1230
1231     DLOG("kill_mode=%s\n", kill_mode_str);
1232
1233     int kill_mode;
1234     if (strcmp(kill_mode_str, "window") == 0)
1235         kill_mode = KILL_WINDOW;
1236     else if (strcmp(kill_mode_str, "client") == 0)
1237         kill_mode = KILL_CLIENT;
1238     else {
1239         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1240         ysuccess(false);
1241         return;
1242     }
1243
1244     HANDLE_EMPTY_MATCH;
1245
1246     owindow *current;
1247     TAILQ_FOREACH(current, &owindows, owindows) {
1248         con_close(current->con, kill_mode);
1249     }
1250
1251     cmd_output->needs_tree_render = true;
1252     // XXX: default reply for now, make this a better reply
1253     ysuccess(true);
1254 }
1255
1256 /*
1257  * Implementation of 'exec [--no-startup-id] <command>'.
1258  *
1259  */
1260 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1261     bool no_startup_id = (nosn != NULL);
1262
1263     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1264     start_application(command, no_startup_id);
1265
1266     // XXX: default reply for now, make this a better reply
1267     ysuccess(true);
1268 }
1269
1270 /*
1271  * Implementation of 'focus left|right|up|down'.
1272  *
1273  */
1274 void cmd_focus_direction(I3_CMD, const char *direction) {
1275     switch (parse_direction(direction)) {
1276         case D_LEFT:
1277             tree_next('p', HORIZ);
1278             break;
1279         case D_RIGHT:
1280             tree_next('n', HORIZ);
1281             break;
1282         case D_UP:
1283             tree_next('p', VERT);
1284             break;
1285         case D_DOWN:
1286             tree_next('n', VERT);
1287             break;
1288     }
1289
1290     cmd_output->needs_tree_render = true;
1291     // XXX: default reply for now, make this a better reply
1292     ysuccess(true);
1293 }
1294
1295 /*
1296  * Focus a container and disable any other fullscreen container not permitting the focus.
1297  *
1298  */
1299 static void cmd_focus_force_focus(Con *con) {
1300     /* Disable fullscreen container in workspace with container to be focused. */
1301     Con *ws = con_get_workspace(con);
1302     Con *fullscreen_on_ws = (focused && focused->fullscreen_mode == CF_GLOBAL) ? focused : con_get_fullscreen_con(ws, CF_OUTPUT);
1303     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1304         con_disable_fullscreen(fullscreen_on_ws);
1305     }
1306     con_activate(con);
1307 }
1308
1309 /*
1310  * Implementation of 'focus tiling|floating|mode_toggle'.
1311  *
1312  */
1313 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1314     DLOG("window_mode = %s\n", window_mode);
1315
1316     bool to_floating = false;
1317     if (strcmp(window_mode, "mode_toggle") == 0) {
1318         to_floating = !con_inside_floating(focused);
1319     } else if (strcmp(window_mode, "floating") == 0) {
1320         to_floating = true;
1321     } else if (strcmp(window_mode, "tiling") == 0) {
1322         to_floating = false;
1323     }
1324
1325     Con *ws = con_get_workspace(focused);
1326     Con *current;
1327     bool success = false;
1328     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1329         if ((to_floating && current->type != CT_FLOATING_CON) ||
1330             (!to_floating && current->type == CT_FLOATING_CON))
1331             continue;
1332
1333         cmd_focus_force_focus(con_descend_focused(current));
1334         success = true;
1335         break;
1336     }
1337
1338     if (success) {
1339         cmd_output->needs_tree_render = true;
1340         ysuccess(true);
1341     } else {
1342         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1343     }
1344 }
1345
1346 /*
1347  * Implementation of 'focus parent|child'.
1348  *
1349  */
1350 void cmd_focus_level(I3_CMD, const char *level) {
1351     DLOG("level = %s\n", level);
1352     bool success = false;
1353
1354     /* Focusing the parent can only be allowed if the newly
1355      * focused container won't escape the fullscreen container. */
1356     if (strcmp(level, "parent") == 0) {
1357         if (focused && focused->parent) {
1358             if (con_fullscreen_permits_focusing(focused->parent))
1359                 success = level_up();
1360             else
1361                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1362         }
1363     }
1364
1365     /* Focusing a child should always be allowed. */
1366     else
1367         success = level_down();
1368
1369     cmd_output->needs_tree_render = success;
1370     // XXX: default reply for now, make this a better reply
1371     ysuccess(success);
1372 }
1373
1374 /*
1375  * Implementation of 'focus'.
1376  *
1377  */
1378 void cmd_focus(I3_CMD) {
1379     DLOG("current_match = %p\n", current_match);
1380
1381     if (match_is_empty(current_match)) {
1382         ELOG("You have to specify which window/container should be focused.\n");
1383         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1384
1385         yerror("You have to specify which window/container should be focused");
1386
1387         return;
1388     }
1389
1390     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1391     int count = 0;
1392     owindow *current;
1393     TAILQ_FOREACH(current, &owindows, owindows) {
1394         Con *ws = con_get_workspace(current->con);
1395         /* If no workspace could be found, this was a dock window.
1396          * Just skip it, you cannot focus dock windows. */
1397         if (!ws)
1398             continue;
1399
1400         /* In case this is a scratchpad window, call scratchpad_show(). */
1401         if (ws == __i3_scratch) {
1402             scratchpad_show(current->con);
1403             count++;
1404             /* While for the normal focus case we can change focus multiple
1405              * times and only a single window ends up focused, we could show
1406              * multiple scratchpad windows. So, rather break here. */
1407             break;
1408         }
1409
1410         /* If the container is not on the current workspace,
1411          * workspace_show() will switch to a different workspace and (if
1412          * enabled) trigger a mouse pointer warp to the currently focused
1413          * container (!) on the target workspace.
1414          *
1415          * Therefore, before calling workspace_show(), we make sure that
1416          * 'current' will be focused on the workspace. However, we cannot
1417          * just con_focus(current) because then the pointer will not be
1418          * warped at all (the code thinks we are already there).
1419          *
1420          * So we focus 'current' to make it the currently focused window of
1421          * the target workspace, then revert focus. */
1422         Con *currently_focused = focused;
1423         cmd_focus_force_focus(current->con);
1424         con_activate(currently_focused);
1425
1426         /* Now switch to the workspace, then focus */
1427         workspace_show(ws);
1428         LOG("focusing %p / %s\n", current->con, current->con->name);
1429         con_activate(current->con);
1430         count++;
1431     }
1432
1433     if (count > 1)
1434         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1435             "while only exactly one container can be focused at a time.\n",
1436             count);
1437
1438     cmd_output->needs_tree_render = true;
1439     ysuccess(count > 0);
1440 }
1441
1442 /*
1443  * Implementation of 'fullscreen enable|toggle [global]' and
1444  *                   'fullscreen disable'
1445  *
1446  */
1447 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1448     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1449     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1450     owindow *current;
1451
1452     HANDLE_EMPTY_MATCH;
1453
1454     TAILQ_FOREACH(current, &owindows, owindows) {
1455         DLOG("matching: %p / %s\n", current->con, current->con->name);
1456         if (strcmp(action, "toggle") == 0) {
1457             con_toggle_fullscreen(current->con, mode);
1458         } else if (strcmp(action, "enable") == 0) {
1459             con_enable_fullscreen(current->con, mode);
1460         } else if (strcmp(action, "disable") == 0) {
1461             con_disable_fullscreen(current->con);
1462         }
1463     }
1464
1465     cmd_output->needs_tree_render = true;
1466     // XXX: default reply for now, make this a better reply
1467     ysuccess(true);
1468 }
1469
1470 /*
1471  * Implementation of 'sticky enable|disable|toggle'.
1472  *
1473  */
1474 void cmd_sticky(I3_CMD, const char *action) {
1475     DLOG("%s sticky on window\n", action);
1476     HANDLE_EMPTY_MATCH;
1477
1478     owindow *current;
1479     TAILQ_FOREACH(current, &owindows, owindows) {
1480         if (current->con->window == NULL) {
1481             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1482             continue;
1483         }
1484         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1485
1486         bool sticky = false;
1487         if (strcmp(action, "enable") == 0)
1488             sticky = true;
1489         else if (strcmp(action, "disable") == 0)
1490             sticky = false;
1491         else if (strcmp(action, "toggle") == 0)
1492             sticky = !current->con->sticky;
1493
1494         current->con->sticky = sticky;
1495         ewmh_update_sticky(current->con->window->id, sticky);
1496     }
1497
1498     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1499      * sure it gets pushed to the front now. */
1500     output_push_sticky_windows(focused);
1501
1502     ewmh_update_wm_desktop();
1503
1504     cmd_output->needs_tree_render = true;
1505     ysuccess(true);
1506 }
1507
1508 /*
1509  * Implementation of 'move <direction> [<pixels> [px]]'.
1510  *
1511  */
1512 void cmd_move_direction(I3_CMD, const char *direction_str, long move_px) {
1513     owindow *current;
1514     HANDLE_EMPTY_MATCH;
1515
1516     Con *initially_focused = focused;
1517     direction_t direction = parse_direction(direction_str);
1518
1519     TAILQ_FOREACH(current, &owindows, owindows) {
1520         DLOG("moving in direction %s, px %ld\n", direction_str, move_px);
1521         if (con_is_floating(current->con)) {
1522             DLOG("floating move with %ld pixels\n", move_px);
1523             Rect newrect = current->con->parent->rect;
1524
1525             switch (direction) {
1526                 case D_LEFT:
1527                     newrect.x -= move_px;
1528                     break;
1529                 case D_RIGHT:
1530                     newrect.x += move_px;
1531                     break;
1532                 case D_UP:
1533                     newrect.y -= move_px;
1534                     break;
1535                 case D_DOWN:
1536                     newrect.y += move_px;
1537                     break;
1538             }
1539
1540             floating_reposition(current->con->parent, newrect);
1541         } else {
1542             tree_move(current->con, direction);
1543             cmd_output->needs_tree_render = true;
1544         }
1545     }
1546
1547     /* the move command should not disturb focus */
1548     if (focused != initially_focused)
1549         con_activate(initially_focused);
1550
1551     // XXX: default reply for now, make this a better reply
1552     ysuccess(true);
1553 }
1554
1555 /*
1556  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1557  *
1558  */
1559 void cmd_layout(I3_CMD, const char *layout_str) {
1560     HANDLE_EMPTY_MATCH;
1561
1562     layout_t layout;
1563     if (!layout_from_name(layout_str, &layout)) {
1564         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1565         return;
1566     }
1567
1568     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1569
1570     owindow *current;
1571     TAILQ_FOREACH(current, &owindows, owindows) {
1572         if (con_is_docked(current->con)) {
1573             ELOG("cannot change layout of a docked container, skipping it.\n");
1574             continue;
1575         }
1576
1577         DLOG("matching: %p / %s\n", current->con, current->con->name);
1578         con_set_layout(current->con, layout);
1579     }
1580
1581     cmd_output->needs_tree_render = true;
1582     // XXX: default reply for now, make this a better reply
1583     ysuccess(true);
1584 }
1585
1586 /*
1587  * Implementation of 'layout toggle [all|split]'.
1588  *
1589  */
1590 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1591     owindow *current;
1592
1593     if (toggle_mode == NULL)
1594         toggle_mode = "default";
1595
1596     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1597
1598     /* check if the match is empty, not if the result is empty */
1599     if (match_is_empty(current_match))
1600         con_toggle_layout(focused, toggle_mode);
1601     else {
1602         TAILQ_FOREACH(current, &owindows, owindows) {
1603             DLOG("matching: %p / %s\n", current->con, current->con->name);
1604             con_toggle_layout(current->con, toggle_mode);
1605         }
1606     }
1607
1608     cmd_output->needs_tree_render = true;
1609     // XXX: default reply for now, make this a better reply
1610     ysuccess(true);
1611 }
1612
1613 /*
1614  * Implementation of 'exit'.
1615  *
1616  */
1617 void cmd_exit(I3_CMD) {
1618     LOG("Exiting due to user command.\n");
1619 #ifdef I3_ASAN_ENABLED
1620     __lsan_do_leak_check();
1621 #endif
1622     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1623     unlink(config.ipc_socket_path);
1624     xcb_disconnect(conn);
1625     exit(0);
1626
1627     /* unreached */
1628 }
1629
1630 /*
1631  * Implementation of 'reload'.
1632  *
1633  */
1634 void cmd_reload(I3_CMD) {
1635     LOG("reloading\n");
1636     kill_nagbar(&config_error_nagbar_pid, false);
1637     kill_nagbar(&command_error_nagbar_pid, false);
1638     load_configuration(conn, NULL, true);
1639     x_set_i3_atoms();
1640     /* Send an IPC event just in case the ws names have changed */
1641     ipc_send_workspace_event("reload", NULL, NULL);
1642     /* Send an update event for the barconfig just in case it has changed */
1643     update_barconfig();
1644
1645     // XXX: default reply for now, make this a better reply
1646     ysuccess(true);
1647 }
1648
1649 /*
1650  * Implementation of 'restart'.
1651  *
1652  */
1653 void cmd_restart(I3_CMD) {
1654     LOG("restarting i3\n");
1655     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1656     unlink(config.ipc_socket_path);
1657     /* We need to call this manually since atexit handlers don’t get called
1658      * when exec()ing */
1659     purge_zerobyte_logfile();
1660     i3_restart(false);
1661
1662     // XXX: default reply for now, make this a better reply
1663     ysuccess(true);
1664 }
1665
1666 /*
1667  * Implementation of 'open'.
1668  *
1669  */
1670 void cmd_open(I3_CMD) {
1671     LOG("opening new container\n");
1672     Con *con = tree_open_con(NULL, NULL);
1673     con->layout = L_SPLITH;
1674     con_activate(con);
1675
1676     y(map_open);
1677     ystr("success");
1678     y(bool, true);
1679     ystr("id");
1680     y(integer, (uintptr_t)con);
1681     y(map_close);
1682
1683     cmd_output->needs_tree_render = true;
1684 }
1685
1686 /*
1687  * Implementation of 'focus output <output>'.
1688  *
1689  */
1690 void cmd_focus_output(I3_CMD, const char *name) {
1691     owindow *current;
1692
1693     DLOG("name = %s\n", name);
1694
1695     HANDLE_EMPTY_MATCH;
1696
1697     /* get the output */
1698     Output *current_output = NULL;
1699     Output *output;
1700
1701     TAILQ_FOREACH(current, &owindows, owindows)
1702     current_output = get_output_for_con(current->con);
1703     assert(current_output != NULL);
1704
1705     output = get_output_from_string(current_output, name);
1706
1707     if (!output) {
1708         LOG("No such output found.\n");
1709         ysuccess(false);
1710         return;
1711     }
1712
1713     /* get visible workspace on output */
1714     Con *ws = NULL;
1715     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1716     if (!ws) {
1717         ysuccess(false);
1718         return;
1719     }
1720
1721     workspace_show(ws);
1722
1723     cmd_output->needs_tree_render = true;
1724     // XXX: default reply for now, make this a better reply
1725     ysuccess(true);
1726 }
1727
1728 /*
1729  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1730  *
1731  */
1732 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1733     bool has_error = false;
1734
1735     owindow *current;
1736     HANDLE_EMPTY_MATCH;
1737
1738     TAILQ_FOREACH(current, &owindows, owindows) {
1739         if (!con_is_floating(current->con)) {
1740             ELOG("Cannot change position. The window/container is not floating\n");
1741
1742             if (!has_error) {
1743                 yerror("Cannot change position of a window/container because it is not floating.");
1744                 has_error = true;
1745             }
1746
1747             continue;
1748         }
1749
1750         Rect newrect = current->con->parent->rect;
1751
1752         DLOG("moving to position %ld %ld\n", x, y);
1753         newrect.x = x;
1754         newrect.y = y;
1755
1756         if (!floating_reposition(current->con->parent, newrect)) {
1757             yerror("Cannot move window/container out of bounds.");
1758             has_error = true;
1759         }
1760     }
1761
1762     if (!has_error)
1763         ysuccess(true);
1764 }
1765
1766 /*
1767  * Implementation of 'move [window|container] [to] [absolute] position center
1768  *
1769  */
1770 void cmd_move_window_to_center(I3_CMD, const char *method) {
1771     bool has_error = false;
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             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1779                  current->con, current->con->name);
1780
1781             if (!has_error) {
1782                 yerror("Cannot change position of a window/container because it is not floating.");
1783                 has_error = true;
1784             }
1785
1786             continue;
1787         }
1788
1789         if (strcmp(method, "absolute") == 0) {
1790             DLOG("moving to absolute center\n");
1791             floating_center(floating_con, croot->rect);
1792
1793             floating_maybe_reassign_ws(floating_con);
1794             cmd_output->needs_tree_render = true;
1795         }
1796
1797         if (strcmp(method, "position") == 0) {
1798             DLOG("moving to center\n");
1799             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1800
1801             cmd_output->needs_tree_render = true;
1802         }
1803     }
1804
1805     // XXX: default reply for now, make this a better reply
1806     if (!has_error)
1807         ysuccess(true);
1808 }
1809
1810 /*
1811  * Implementation of 'move [window|container] [to] position mouse'
1812  *
1813  */
1814 void cmd_move_window_to_mouse(I3_CMD) {
1815     HANDLE_EMPTY_MATCH;
1816
1817     owindow *current;
1818     TAILQ_FOREACH(current, &owindows, owindows) {
1819         Con *floating_con = con_inside_floating(current->con);
1820         if (floating_con == NULL) {
1821             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1822                  current->con, current->con->name);
1823             continue;
1824         }
1825
1826         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1827         floating_move_to_pointer(floating_con);
1828     }
1829
1830     cmd_output->needs_tree_render = true;
1831     ysuccess(true);
1832 }
1833
1834 /*
1835  * Implementation of 'move scratchpad'.
1836  *
1837  */
1838 void cmd_move_scratchpad(I3_CMD) {
1839     DLOG("should move window to scratchpad\n");
1840     owindow *current;
1841
1842     HANDLE_EMPTY_MATCH;
1843
1844     TAILQ_FOREACH(current, &owindows, owindows) {
1845         DLOG("matching: %p / %s\n", current->con, current->con->name);
1846         scratchpad_move(current->con);
1847     }
1848
1849     cmd_output->needs_tree_render = true;
1850     // XXX: default reply for now, make this a better reply
1851     ysuccess(true);
1852 }
1853
1854 /*
1855  * Implementation of 'scratchpad show'.
1856  *
1857  */
1858 void cmd_scratchpad_show(I3_CMD) {
1859     DLOG("should show scratchpad window\n");
1860     owindow *current;
1861     bool result = false;
1862
1863     if (match_is_empty(current_match)) {
1864         result = scratchpad_show(NULL);
1865     } else {
1866         TAILQ_FOREACH(current, &owindows, owindows) {
1867             DLOG("matching: %p / %s\n", current->con, current->con->name);
1868             result |= scratchpad_show(current->con);
1869         }
1870     }
1871
1872     cmd_output->needs_tree_render = true;
1873
1874     ysuccess(result);
1875 }
1876
1877 /*
1878  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1879  *
1880  */
1881 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1882     HANDLE_EMPTY_MATCH;
1883
1884     owindow *match = TAILQ_FIRST(&owindows);
1885     if (match == NULL) {
1886         DLOG("No match found for swapping.\n");
1887         return;
1888     }
1889
1890     Con *con;
1891     if (strcmp(mode, "id") == 0) {
1892         long target;
1893         if (!parse_long(arg, &target, 0)) {
1894             yerror("Failed to parse %s into a window id.\n", arg);
1895             return;
1896         }
1897
1898         con = con_by_window_id(target);
1899     } else if (strcmp(mode, "con_id") == 0) {
1900         long target;
1901         if (!parse_long(arg, &target, 0)) {
1902             yerror("Failed to parse %s into a container id.\n", arg);
1903             return;
1904         }
1905
1906         con = con_by_con_id(target);
1907     } else if (strcmp(mode, "mark") == 0) {
1908         con = con_by_mark(arg);
1909     } else {
1910         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1911         return;
1912     }
1913
1914     if (con == NULL) {
1915         yerror("Could not find container for %s = %s\n", mode, arg);
1916         return;
1917     }
1918
1919     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1920         DLOG("More than one container matched the swap command, only using the first one.");
1921     }
1922
1923     if (match->con == NULL) {
1924         DLOG("Match %p has no container.\n", match);
1925         ysuccess(false);
1926         return;
1927     }
1928
1929     DLOG("Swapping %p with %p.\n", match->con, con);
1930     bool result = con_swap(match->con, con);
1931
1932     cmd_output->needs_tree_render = true;
1933     ysuccess(result);
1934 }
1935
1936 /*
1937  * Implementation of 'title_format <format>'
1938  *
1939  */
1940 void cmd_title_format(I3_CMD, const char *format) {
1941     DLOG("setting title_format to \"%s\"\n", format);
1942     HANDLE_EMPTY_MATCH;
1943
1944     owindow *current;
1945     TAILQ_FOREACH(current, &owindows, owindows) {
1946         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1947         FREE(current->con->title_format);
1948
1949         /* If we only display the title without anything else, we can skip the parsing step,
1950          * so we remove the title format altogether. */
1951         if (strcasecmp(format, "%title") != 0) {
1952             current->con->title_format = sstrdup(format);
1953
1954             if (current->con->window != NULL) {
1955                 i3String *formatted_title = con_parse_title_format(current->con);
1956                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1957                 I3STRING_FREE(formatted_title);
1958             }
1959         } else {
1960             if (current->con->window != NULL) {
1961                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1962                 ewmh_update_visible_name(current->con->window->id, NULL);
1963             }
1964         }
1965
1966         if (current->con->window != NULL) {
1967             /* Make sure the window title is redrawn immediately. */
1968             current->con->window->name_x_changed = true;
1969         } else {
1970             /* For windowless containers we also need to force the redrawing. */
1971             FREE(current->con->deco_render_params);
1972         }
1973     }
1974
1975     cmd_output->needs_tree_render = true;
1976     ysuccess(true);
1977 }
1978
1979 /*
1980  * Implementation of 'rename workspace [<name>] to <name>'
1981  *
1982  */
1983 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1984     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1985         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1986         ysuccess(false);
1987         return;
1988     }
1989     if (old_name) {
1990         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1991     } else {
1992         LOG("Renaming current workspace to \"%s\"\n", new_name);
1993     }
1994
1995     Con *workspace;
1996     if (old_name) {
1997         workspace = get_existing_workspace_by_name(old_name);
1998     } else {
1999         workspace = con_get_workspace(focused);
2000         old_name = workspace->name;
2001     }
2002
2003     if (!workspace) {
2004         yerror("Old workspace \"%s\" not found", old_name);
2005         return;
2006     }
2007
2008     Con *check_dest = get_existing_workspace_by_name(new_name);
2009
2010     /* If check_dest == workspace, the user might be changing the case of the
2011      * workspace, or it might just be a no-op. */
2012     if (check_dest != NULL && check_dest != workspace) {
2013         yerror("New workspace \"%s\" already exists", new_name);
2014         return;
2015     }
2016
2017     /* Change the name and try to parse it as a number. */
2018     /* old_name might refer to workspace->name, so copy it before free()ing */
2019     char *old_name_copy = sstrdup(old_name);
2020     FREE(workspace->name);
2021     workspace->name = sstrdup(new_name);
2022
2023     workspace->num = ws_name_to_number(new_name);
2024     LOG("num = %d\n", workspace->num);
2025
2026     /* By re-attaching, the sort order will be correct afterwards. */
2027     Con *previously_focused = focused;
2028     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
2029     Con *parent = workspace->parent;
2030     con_detach(workspace);
2031     con_attach(workspace, parent, false);
2032
2033     /* Move the workspace to the correct output if it has an assignment */
2034     struct Workspace_Assignment *assignment = NULL;
2035     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
2036         if (assignment->output == NULL)
2037             continue;
2038         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
2039             continue;
2040         }
2041
2042         Output *target_output = get_output_by_name(assignment->output, true);
2043         if (!target_output) {
2044             LOG("Could not get output named \"%s\"\n", assignment->output);
2045             continue;
2046         }
2047         if (!output_triggers_assignment(target_output, assignment)) {
2048             continue;
2049         }
2050         workspace_move_to_output(workspace, target_output);
2051
2052         break;
2053     }
2054
2055     bool can_restore_focus = previously_focused != NULL;
2056     /* NB: If previously_focused is a workspace we can't work directly with it
2057      * since it might have been cleaned up by workspace_show() already,
2058      * depending on the focus order/number of other workspaces on the output.
2059      * Instead, we loop through the available workspaces and only focus
2060      * previously_focused if we still find it. */
2061     if (previously_focused_content) {
2062         Con *workspace = NULL;
2063         GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2064         can_restore_focus &= (workspace != NULL);
2065     }
2066
2067     if (can_restore_focus) {
2068         /* Restore the previous focus since con_attach messes with the focus. */
2069         workspace_show(con_get_workspace(previously_focused));
2070         con_focus(previously_focused);
2071     }
2072
2073     cmd_output->needs_tree_render = true;
2074     ysuccess(true);
2075
2076     ipc_send_workspace_event("rename", workspace, NULL);
2077     ewmh_update_desktop_names();
2078     ewmh_update_desktop_viewport();
2079     ewmh_update_current_desktop();
2080
2081     startup_sequence_rename_workspace(old_name_copy, new_name);
2082     free(old_name_copy);
2083 }
2084
2085 /*
2086  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2087  *
2088  */
2089 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2090     int mode = M_DOCK;
2091     bool toggle = false;
2092     if (strcmp(bar_mode, "dock") == 0)
2093         mode = M_DOCK;
2094     else if (strcmp(bar_mode, "hide") == 0)
2095         mode = M_HIDE;
2096     else if (strcmp(bar_mode, "invisible") == 0)
2097         mode = M_INVISIBLE;
2098     else if (strcmp(bar_mode, "toggle") == 0)
2099         toggle = true;
2100     else {
2101         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2102         return false;
2103     }
2104
2105     bool changed_sth = false;
2106     Barconfig *current = NULL;
2107     TAILQ_FOREACH(current, &barconfigs, configs) {
2108         if (bar_id && strcmp(current->id, bar_id) != 0)
2109             continue;
2110
2111         if (toggle)
2112             mode = (current->mode + 1) % 2;
2113
2114         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2115         current->mode = mode;
2116         changed_sth = true;
2117
2118         if (bar_id)
2119             break;
2120     }
2121
2122     if (bar_id && !changed_sth) {
2123         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2124         return false;
2125     }
2126
2127     return true;
2128 }
2129
2130 /*
2131  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2132  *
2133  */
2134 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2135     int hidden_state = S_SHOW;
2136     bool toggle = false;
2137     if (strcmp(bar_hidden_state, "hide") == 0)
2138         hidden_state = S_HIDE;
2139     else if (strcmp(bar_hidden_state, "show") == 0)
2140         hidden_state = S_SHOW;
2141     else if (strcmp(bar_hidden_state, "toggle") == 0)
2142         toggle = true;
2143     else {
2144         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2145         return false;
2146     }
2147
2148     bool changed_sth = false;
2149     Barconfig *current = NULL;
2150     TAILQ_FOREACH(current, &barconfigs, configs) {
2151         if (bar_id && strcmp(current->id, bar_id) != 0)
2152             continue;
2153
2154         if (toggle)
2155             hidden_state = (current->hidden_state + 1) % 2;
2156
2157         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2158         current->hidden_state = hidden_state;
2159         changed_sth = true;
2160
2161         if (bar_id)
2162             break;
2163     }
2164
2165     if (bar_id && !changed_sth) {
2166         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2167         return false;
2168     }
2169
2170     return true;
2171 }
2172
2173 /*
2174  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2175  *
2176  */
2177 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2178     bool ret;
2179     if (strcmp(bar_type, "mode") == 0)
2180         ret = cmd_bar_mode(bar_value, bar_id);
2181     else if (strcmp(bar_type, "hidden_state") == 0)
2182         ret = cmd_bar_hidden_state(bar_value, bar_id);
2183     else {
2184         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2185         ret = false;
2186     }
2187
2188     ysuccess(ret);
2189     if (!ret)
2190         return;
2191
2192     update_barconfig();
2193 }
2194
2195 /*
2196  * Implementation of 'shmlog <size>|toggle|on|off'
2197  *
2198  */
2199 void cmd_shmlog(I3_CMD, const char *argument) {
2200     if (!strcmp(argument, "toggle"))
2201         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2202         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2203     else if (!strcmp(argument, "on"))
2204         shmlog_size = default_shmlog_size;
2205     else if (!strcmp(argument, "off"))
2206         shmlog_size = 0;
2207     else {
2208         long new_size = 0;
2209         if (!parse_long(argument, &new_size, 0)) {
2210             yerror("Failed to parse %s into a shmlog size.\n", argument);
2211             return;
2212         }
2213         /* If shm logging now, restart logging with the new size. */
2214         if (shmlog_size > 0) {
2215             shmlog_size = 0;
2216             LOG("Restarting shm logging...\n");
2217             init_logging();
2218         }
2219         shmlog_size = (int)new_size;
2220     }
2221     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2222     init_logging();
2223     update_shmlog_atom();
2224     ysuccess(true);
2225 }
2226
2227 /*
2228  * Implementation of 'debuglog toggle|on|off'
2229  *
2230  */
2231 void cmd_debuglog(I3_CMD, const char *argument) {
2232     bool logging = get_debug_logging();
2233     if (!strcmp(argument, "toggle")) {
2234         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2235         set_debug_logging(!logging);
2236     } else if (!strcmp(argument, "on") && !logging) {
2237         LOG("Enabling debug logging\n");
2238         set_debug_logging(true);
2239     } else if (!strcmp(argument, "off") && logging) {
2240         LOG("Disabling debug logging\n");
2241         set_debug_logging(false);
2242     }
2243     // XXX: default reply for now, make this a better reply
2244     ysuccess(true);
2245 }