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 px, int ppt) {
 501     Con *second = NULL;
 502     Con *first = current;
 503     direction_t search_direction = parse_direction(direction);
 504
 505     bool res = resize_find_tiling_participants(&first, &second, search_direction, false);
 506     if (!res) {
 507         yerror("No second container found in this direction.\n");
 508         return false;
 509     }
 510
 511     if (ppt) {
 512         /* For backwards compatibility, 'X px or Y ppt' means that ppt is
 513          * preferred. */
 514         px = 0;
 515     }
 516     return resize_neighboring_cons(first, second, px, ppt);
 517 }
 518
 519 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 520     LOG("width/height resize\n");
 521
 522     /* get the appropriate current container (skip stacked/tabbed cons) */
 523     Con *dummy = NULL;
 524     direction_t search_direction = (strcmp(direction, "width") == 0 ? D_LEFT : D_DOWN);
 525     bool search_result = resize_find_tiling_participants(&current, &dummy, search_direction, true);
 526     if (search_result == false) {
 527         ysuccess(false);
 528         return false;
 529     }
 530
 531     /* get the default percentage */
 532     int children = con_num_children(current->parent);
 533     LOG("ins. %d children\n", children);
 534     double percentage = 1.0 / children;
 535     LOG("default percentage = %f\n", percentage);
 536
 537     /* Ensure all the other children have a percentage set. */
 538     Con *child;
 539     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 540         LOG("child->percent = %f (child %p)\n", child->percent, child);
 541         if (child->percent == 0.0)
 542             child->percent = percentage;
 543     }
 544
 545     double new_current_percent = current->percent + ((double)ppt / 100.0);
 546     double subtract_percent = ((double)ppt / 100.0) / (children - 1);
 547     LOG("new_current_percent = %f\n", new_current_percent);
 548     LOG("subtract_percent = %f\n", subtract_percent);
 549     /* Ensure that the new percentages are positive. */
 550     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 551         if (child == current)
 552             continue;
 553         if (child->percent - subtract_percent <= 0.0) {
 554             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 555             ysuccess(false);
 556             return false;
 557         }
 558     }
 559     if (new_current_percent <= 0.0) {
 560         LOG("Not resizing, already at minimum size\n");
 561         ysuccess(false);
 562         return false;
 563     }
 564
 565     current->percent = new_current_percent;
 566     LOG("current->percent after = %f\n", current->percent);
 567
 568     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 569         if (child == current)
 570             continue;
 571         child->percent -= subtract_percent;
 572         LOG("child->percent after (%p) = %f\n", child, child->percent);
 573     }
 574
 575     return true;
 576 }
 577
 578 /*
 579  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 580  *
 581  */
 582 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 583     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 584     if (strcmp(way, "shrink") == 0) {
 585         resize_px *= -1;
 586         resize_ppt *= -1;
 587     }
 588
 589     HANDLE_EMPTY_MATCH;
 590
 591     owindow *current;
 592     TAILQ_FOREACH(current, &owindows, owindows) {
 593         /* Don't handle dock windows (issue #1201) */
 594         if (current->con->window && current->con->window->dock) {
 595             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 596             continue;
 597         }
 598
 599         Con *floating_con;
 600         if ((floating_con = con_inside_floating(current->con))) {
 601             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 602         } else {
 603             if (strcmp(direction, "width") == 0 ||
 604                 strcmp(direction, "height") == 0) {
 605                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 606                                                     current->con, way, direction, resize_ppt))
 607                     return;
 608             } else {
 609                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 610                                                  current->con, way, direction,
 611                                                  resize_px, resize_ppt))
 612                     return;
 613             }
 614         }
 615     }
 616
 617     cmd_output->needs_tree_render = true;
 618     // XXX: default reply for now, make this a better reply
 619     ysuccess(true);
 620 }
 621
 622 /*
 623  * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
 624  *
 625  */
 626 void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
 627     DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
 628     if (cwidth < 0 || cheight < 0) {
 629         ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
 630         return;
 631     }
 632
 633     HANDLE_EMPTY_MATCH;
 634
 635     owindow *current;
 636     bool success = true;
 637     TAILQ_FOREACH(current, &owindows, owindows) {
 638         Con *floating_con;
 639         if ((floating_con = con_inside_floating(current->con))) {
 640             Con *output = con_get_output(floating_con);
 641             if (cwidth == 0) {
 642                 cwidth = floating_con->rect.width;
 643             } else if (mode_width && strcmp(mode_width, "ppt") == 0) {
 644                 cwidth = output->rect.width * ((double)cwidth / 100.0);
 645             }
 646             if (cheight == 0) {
 647                 cheight = floating_con->rect.height;
 648             } else if (mode_height && strcmp(mode_height, "ppt") == 0) {
 649                 cheight = output->rect.height * ((double)cheight / 100.0);
 650             }
 651             floating_resize(floating_con, cwidth, cheight);
 652         } else {
 653             if (current->con->window && current->con->window->dock) {
 654                 DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 655                 continue;
 656             }
 657
 658             if (cwidth > 0 && mode_width && strcmp(mode_width, "ppt") == 0) {
 659                 /* get the appropriate current container (skip stacked/tabbed cons) */
 660                 Con *target = current->con;
 661                 Con *dummy;
 662                 resize_find_tiling_participants(&target, &dummy, D_LEFT, true);
 663
 664                 /* Calculate new size for the target container */
 665                 double current_percent = target->percent;
 666                 char *action_string;
 667                 long adjustment;
 668
 669                 if (current_percent > cwidth) {
 670                     action_string = "shrink";
 671                     adjustment = (int)(current_percent * 100) - cwidth;
 672                 } else {
 673                     action_string = "grow";
 674                     adjustment = cwidth - (int)(current_percent * 100);
 675                 }
 676
 677                 /* perform resizing and report failure if not possible */
 678                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 679                                                     target, action_string, "width", adjustment)) {
 680                     success = false;
 681                 }
 682             }
 683
 684             if (cheight > 0 && mode_height && strcmp(mode_height, "ppt") == 0) {
 685                 /* get the appropriate current container (skip stacked/tabbed cons) */
 686                 Con *target = current->con;
 687                 Con *dummy;
 688                 resize_find_tiling_participants(&target, &dummy, D_DOWN, true);
 689
 690                 /* Calculate new size for the target container */
 691                 double current_percent = target->percent;
 692                 char *action_string;
 693                 long adjustment;
 694
 695                 if (current_percent > cheight) {
 696                     action_string = "shrink";
 697                     adjustment = (int)(current_percent * 100) - cheight;
 698                 } else {
 699                     action_string = "grow";
 700                     adjustment = cheight - (int)(current_percent * 100);
 701                 }
 702
 703                 /* perform resizing and report failure if not possible */
 704                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 705                                                     target, action_string, "height", adjustment)) {
 706                     success = false;
 707                 }
 708             }
 709         }
 710     }
 711
 712     cmd_output->needs_tree_render = true;
 713     ysuccess(success);
 714 }
 715
 716 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 717     if (border_style == BS_NONE) {
 718         return 0;
 719     }
 720     if (border_width >= 0) {
 721         return logical_px(border_width);
 722     }
 723
 724     const bool is_floating = con_inside_floating(con) != NULL;
 725     /* Load the configured defaults. */
 726     if (is_floating && border_style == config.default_floating_border) {
 727         return config.default_floating_border_width;
 728     } else if (!is_floating && border_style == config.default_border) {
 729         return config.default_border_width;
 730     } else {
 731         /* Use some hardcoded values. */
 732         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 733     }
 734 }
 735
 736 /*
 737  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 738  *
 739  */
 740 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 741     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 742     owindow *current;
 743
 744     HANDLE_EMPTY_MATCH;
 745
 746     TAILQ_FOREACH(current, &owindows, owindows) {
 747         DLOG("matching: %p / %s\n", current->con, current->con->name);
 748
 749         border_style_t border_style;
 750         if (strcmp(border_style_str, "toggle") == 0) {
 751             border_style = (current->con->border_style + 1) % 3;
 752         } else 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, "none") == 0) {
 757             border_style = BS_NONE;
 758         } else {
 759             ELOG("BUG: called with border_style=%s\n", border_style_str);
 760             ysuccess(false);
 761             return;
 762         }
 763
 764         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 765         con_set_border_style(current->con, border_style, con_border_width);
 766     }
 767
 768     cmd_output->needs_tree_render = true;
 769     // XXX: default reply for now, make this a better reply
 770     ysuccess(true);
 771 }
 772
 773 /*
 774  * Implementation of 'nop <comment>'.
 775  *
 776  */
 777 void cmd_nop(I3_CMD, const char *comment) {
 778     LOG("-------------------------------------------------\n");
 779     LOG("  NOP: %s\n", comment);
 780     LOG("-------------------------------------------------\n");
 781     ysuccess(true);
 782 }
 783
 784 /*
 785  * Implementation of 'append_layout <path>'.
 786  *
 787  */
 788 void cmd_append_layout(I3_CMD, const char *cpath) {
 789     LOG("Appending layout \"%s\"\n", cpath);
 790
 791     /* Make sure we allow paths like '~/.i3/layout.json' */
 792     char *path = resolve_tilde(cpath);
 793
 794     char *buf = NULL;
 795     ssize_t len;
 796     if ((len = slurp(path, &buf)) < 0) {
 797         /* slurp already logged an error. */
 798         goto out;
 799     }
 800
 801     if (!json_validate(buf, len)) {
 802         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 803         yerror("Could not parse \"%s\" as JSON.", path);
 804         goto out;
 805     }
 806
 807     json_content_t content = json_determine_content(buf, len);
 808     LOG("JSON content = %d\n", content);
 809     if (content == JSON_CONTENT_UNKNOWN) {
 810         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 811         yerror("Could not determine the contents of \"%s\".", path);
 812         goto out;
 813     }
 814
 815     Con *parent = focused;
 816     if (content == JSON_CONTENT_WORKSPACE) {
 817         parent = output_get_content(con_get_output(parent));
 818     } else {
 819         /* We need to append the layout to a split container, since a leaf
 820          * container must not have any children (by definition).
 821          * Note that we explicitly check for workspaces, since they are okay for
 822          * this purpose, but con_accepts_window() returns false for workspaces. */
 823         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 824             parent = parent->parent;
 825     }
 826     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 827     char *errormsg = NULL;
 828     tree_append_json(parent, buf, len, &errormsg);
 829     if (errormsg != NULL) {
 830         yerror(errormsg);
 831         free(errormsg);
 832         /* Note that we continue executing since tree_append_json() has
 833          * side-effects — user-provided layouts can be partly valid, partly
 834          * invalid, leading to half of the placeholder containers being
 835          * created. */
 836     } else {
 837         ysuccess(true);
 838     }
 839
 840     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 841     // false); should be enough, but when sending 'workspace 4; append_layout
 842     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 843     // is not executed yet and will be batched with append_layout’s
 844     // needs_tree_render after the parser finished. We should check if that is
 845     // necessary at all.
 846     render_con(croot, false);
 847
 848     restore_open_placeholder_windows(parent);
 849
 850     if (content == JSON_CONTENT_WORKSPACE)
 851         ipc_send_workspace_event("restored", parent, NULL);
 852
 853     cmd_output->needs_tree_render = true;
 854 out:
 855     free(path);
 856     free(buf);
 857 }
 858
 859 /*
 860  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 861  *
 862  */
 863 void cmd_workspace(I3_CMD, const char *which) {
 864     Con *ws;
 865
 866     DLOG("which=%s\n", which);
 867
 868     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 869         LOG("Cannot switch workspace while in global fullscreen\n");
 870         ysuccess(false);
 871         return;
 872     }
 873
 874     if (strcmp(which, "next") == 0)
 875         ws = workspace_next();
 876     else if (strcmp(which, "prev") == 0)
 877         ws = workspace_prev();
 878     else if (strcmp(which, "next_on_output") == 0)
 879         ws = workspace_next_on_output();
 880     else if (strcmp(which, "prev_on_output") == 0)
 881         ws = workspace_prev_on_output();
 882     else {
 883         ELOG("BUG: called with which=%s\n", which);
 884         ysuccess(false);
 885         return;
 886     }
 887
 888     workspace_show(ws);
 889
 890     cmd_output->needs_tree_render = true;
 891     // XXX: default reply for now, make this a better reply
 892     ysuccess(true);
 893 }
 894
 895 /*
 896  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 897  *
 898  */
 899 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 900     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 901
 902     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 903         LOG("Cannot switch workspace while in global fullscreen\n");
 904         ysuccess(false);
 905         return;
 906     }
 907
 908     long parsed_num = ws_name_to_number(which);
 909     if (parsed_num == -1) {
 910         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 911         yerror("Could not parse number \"%s\"", which);
 912         return;
 913     }
 914
 915     Con *workspace = get_existing_workspace_by_num(parsed_num);
 916     if (!workspace) {
 917         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 918         ysuccess(true);
 919         workspace_show_by_name(which);
 920         cmd_output->needs_tree_render = true;
 921         return;
 922     }
 923     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 924         ysuccess(true);
 925         return;
 926     }
 927     workspace_show(workspace);
 928
 929     cmd_output->needs_tree_render = true;
 930     // XXX: default reply for now, make this a better reply
 931     ysuccess(true);
 932 }
 933
 934 /*
 935  * Implementation of 'workspace back_and_forth'.
 936  *
 937  */
 938 void cmd_workspace_back_and_forth(I3_CMD) {
 939     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 940         LOG("Cannot switch workspace while in global fullscreen\n");
 941         ysuccess(false);
 942         return;
 943     }
 944
 945     workspace_back_and_forth();
 946
 947     cmd_output->needs_tree_render = true;
 948     // XXX: default reply for now, make this a better reply
 949     ysuccess(true);
 950 }
 951
 952 /*
 953  * Implementation of 'workspace [--no-auto-back-and-forth] <name>'
 954  *
 955  */
 956 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 957     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 958
 959     if (strncasecmp(name, "__", strlen("__")) == 0) {
 960         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 961         ysuccess(false);
 962         return;
 963     }
 964
 965     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 966         LOG("Cannot switch workspace while in global fullscreen\n");
 967         ysuccess(false);
 968         return;
 969     }
 970
 971     DLOG("should switch to workspace %s\n", name);
 972     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 973         ysuccess(true);
 974         return;
 975     }
 976     workspace_show_by_name(name);
 977
 978     cmd_output->needs_tree_render = true;
 979     // XXX: default reply for now, make this a better reply
 980     ysuccess(true);
 981 }
 982
 983 /*
 984  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 985  *
 986  */
 987 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 988     HANDLE_EMPTY_MATCH;
 989
 990     owindow *current = TAILQ_FIRST(&owindows);
 991     if (current == NULL) {
 992         ysuccess(false);
 993         return;
 994     }
 995
 996     /* Marks must be unique, i.e., no two windows must have the same mark. */
 997     if (current != TAILQ_LAST(&owindows, owindows_head)) {
 998         yerror("A mark must not be put onto more than one window");
 999         return;
1000     }
1001
1002     DLOG("matching: %p / %s\n", current->con, current->con->name);
1003
1004     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
1005     if (toggle != NULL) {
1006         con_mark_toggle(current->con, mark, mark_mode);
1007     } else {
1008         con_mark(current->con, mark, mark_mode);
1009     }
1010
1011     cmd_output->needs_tree_render = true;
1012     // XXX: default reply for now, make this a better reply
1013     ysuccess(true);
1014 }
1015
1016 /*
1017  * Implementation of 'unmark [mark]'
1018  *
1019  */
1020 void cmd_unmark(I3_CMD, const char *mark) {
1021     if (match_is_empty(current_match)) {
1022         con_unmark(NULL, mark);
1023     } else {
1024         owindow *current;
1025         TAILQ_FOREACH(current, &owindows, owindows) {
1026             con_unmark(current->con, mark);
1027         }
1028     }
1029
1030     cmd_output->needs_tree_render = true;
1031     // XXX: default reply for now, make this a better reply
1032     ysuccess(true);
1033 }
1034
1035 /*
1036  * Implementation of 'mode <string>'.
1037  *
1038  */
1039 void cmd_mode(I3_CMD, const char *mode) {
1040     DLOG("mode=%s\n", mode);
1041     switch_mode(mode);
1042
1043     // XXX: default reply for now, make this a better reply
1044     ysuccess(true);
1045 }
1046
1047 /*
1048  * Implementation of 'move [window|container] [to] output <str>'.
1049  *
1050  */
1051 void cmd_move_con_to_output(I3_CMD, const char *name) {
1052     DLOG("Should move window to output \"%s\".\n", name);
1053     HANDLE_EMPTY_MATCH;
1054
1055     owindow *current;
1056     bool had_error = false;
1057     TAILQ_FOREACH(current, &owindows, owindows) {
1058         DLOG("matching: %p / %s\n", current->con, current->con->name);
1059
1060         had_error |= !con_move_to_output_name(current->con, name, true);
1061     }
1062
1063     cmd_output->needs_tree_render = true;
1064     ysuccess(!had_error);
1065 }
1066
1067 /*
1068  * Implementation of 'move [container|window] [to] mark <str>'.
1069  *
1070  */
1071 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1072     DLOG("moving window to mark \"%s\"\n", mark);
1073
1074     HANDLE_EMPTY_MATCH;
1075
1076     bool result = true;
1077     owindow *current;
1078     TAILQ_FOREACH(current, &owindows, owindows) {
1079         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1080         result &= con_move_to_mark(current->con, mark);
1081     }
1082
1083     cmd_output->needs_tree_render = true;
1084     ysuccess(result);
1085 }
1086
1087 /*
1088  * Implementation of 'floating enable|disable|toggle'
1089  *
1090  */
1091 void cmd_floating(I3_CMD, const char *floating_mode) {
1092     owindow *current;
1093
1094     DLOG("floating_mode=%s\n", floating_mode);
1095
1096     HANDLE_EMPTY_MATCH;
1097
1098     TAILQ_FOREACH(current, &owindows, owindows) {
1099         DLOG("matching: %p / %s\n", current->con, current->con->name);
1100         if (strcmp(floating_mode, "toggle") == 0) {
1101             DLOG("should toggle mode\n");
1102             toggle_floating_mode(current->con, false);
1103         } else {
1104             DLOG("should switch mode to %s\n", floating_mode);
1105             if (strcmp(floating_mode, "enable") == 0) {
1106                 floating_enable(current->con, false);
1107             } else {
1108                 floating_disable(current->con, false);
1109             }
1110         }
1111     }
1112
1113     cmd_output->needs_tree_render = true;
1114     // XXX: default reply for now, make this a better reply
1115     ysuccess(true);
1116 }
1117
1118 /*
1119  * Implementation of 'move workspace to [output] <str>'.
1120  *
1121  */
1122 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1123     DLOG("should move workspace to output %s\n", name);
1124
1125     HANDLE_EMPTY_MATCH;
1126
1127     owindow *current;
1128     TAILQ_FOREACH(current, &owindows, owindows) {
1129         Con *ws = con_get_workspace(current->con);
1130         if (con_is_internal(ws)) {
1131             continue;
1132         }
1133
1134         Output *current_output = get_output_for_con(ws);
1135         if (current_output == NULL) {
1136             ELOG("Cannot get current output. This is a bug in i3.\n");
1137             ysuccess(false);
1138             return;
1139         }
1140
1141         Output *target_output = get_output_from_string(current_output, name);
1142         if (!target_output) {
1143             ELOG("Could not get output from string \"%s\"\n", name);
1144             ysuccess(false);
1145             return;
1146         }
1147
1148         bool success = workspace_move_to_output(ws, target_output);
1149         if (!success) {
1150             ELOG("Failed to move workspace to output.\n");
1151             ysuccess(false);
1152             return;
1153         }
1154     }
1155
1156     cmd_output->needs_tree_render = true;
1157     // XXX: default reply for now, make this a better reply
1158     ysuccess(true);
1159 }
1160
1161 /*
1162  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1163  *
1164  */
1165 void cmd_split(I3_CMD, const char *direction) {
1166     HANDLE_EMPTY_MATCH;
1167
1168     owindow *current;
1169     LOG("splitting in direction %c\n", direction[0]);
1170     TAILQ_FOREACH(current, &owindows, owindows) {
1171         if (con_is_docked(current->con)) {
1172             ELOG("Cannot split a docked container, skipping.\n");
1173             continue;
1174         }
1175
1176         DLOG("matching: %p / %s\n", current->con, current->con->name);
1177         if (direction[0] == 't') {
1178             layout_t current_layout;
1179             if (current->con->type == CT_WORKSPACE) {
1180                 current_layout = current->con->layout;
1181             } else {
1182                 current_layout = current->con->parent->layout;
1183             }
1184             /* toggling split orientation */
1185             if (current_layout == L_SPLITH) {
1186                 tree_split(current->con, VERT);
1187             } else {
1188                 tree_split(current->con, HORIZ);
1189             }
1190         } else {
1191             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1192         }
1193     }
1194
1195     cmd_output->needs_tree_render = true;
1196     // XXX: default reply for now, make this a better reply
1197     ysuccess(true);
1198 }
1199
1200 /*
1201  * Implementation of 'kill [window|client]'.
1202  *
1203  */
1204 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1205     if (kill_mode_str == NULL)
1206         kill_mode_str = "window";
1207
1208     DLOG("kill_mode=%s\n", kill_mode_str);
1209
1210     int kill_mode;
1211     if (strcmp(kill_mode_str, "window") == 0)
1212         kill_mode = KILL_WINDOW;
1213     else if (strcmp(kill_mode_str, "client") == 0)
1214         kill_mode = KILL_CLIENT;
1215     else {
1216         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1217         ysuccess(false);
1218         return;
1219     }
1220
1221     HANDLE_EMPTY_MATCH;
1222
1223     owindow *current;
1224     TAILQ_FOREACH(current, &owindows, owindows) {
1225         con_close(current->con, kill_mode);
1226     }
1227
1228     cmd_output->needs_tree_render = true;
1229     // XXX: default reply for now, make this a better reply
1230     ysuccess(true);
1231 }
1232
1233 /*
1234  * Implementation of 'exec [--no-startup-id] <command>'.
1235  *
1236  */
1237 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1238     bool no_startup_id = (nosn != NULL);
1239
1240     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1241     start_application(command, no_startup_id);
1242
1243     // XXX: default reply for now, make this a better reply
1244     ysuccess(true);
1245 }
1246
1247 /*
1248  * Implementation of 'focus left|right|up|down'.
1249  *
1250  */
1251 void cmd_focus_direction(I3_CMD, const char *direction) {
1252     switch (parse_direction(direction)) {
1253         case D_LEFT:
1254             tree_next('p', HORIZ);
1255             break;
1256         case D_RIGHT:
1257             tree_next('n', HORIZ);
1258             break;
1259         case D_UP:
1260             tree_next('p', VERT);
1261             break;
1262         case D_DOWN:
1263             tree_next('n', VERT);
1264             break;
1265     }
1266
1267     cmd_output->needs_tree_render = true;
1268     // XXX: default reply for now, make this a better reply
1269     ysuccess(true);
1270 }
1271
1272 /*
1273  * Focus a container and disable any other fullscreen container not permitting the focus.
1274  *
1275  */
1276 static void cmd_focus_force_focus(Con *con) {
1277     /* Disable fullscreen container in workspace with container to be focused. */
1278     Con *ws = con_get_workspace(con);
1279     Con *fullscreen_on_ws = (focused && focused->fullscreen_mode == CF_GLOBAL) ? focused : con_get_fullscreen_con(ws, CF_OUTPUT);
1280     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1281         con_disable_fullscreen(fullscreen_on_ws);
1282     }
1283     con_activate(con);
1284 }
1285
1286 /*
1287  * Implementation of 'focus tiling|floating|mode_toggle'.
1288  *
1289  */
1290 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1291     DLOG("window_mode = %s\n", window_mode);
1292
1293     bool to_floating = false;
1294     if (strcmp(window_mode, "mode_toggle") == 0) {
1295         to_floating = !con_inside_floating(focused);
1296     } else if (strcmp(window_mode, "floating") == 0) {
1297         to_floating = true;
1298     } else if (strcmp(window_mode, "tiling") == 0) {
1299         to_floating = false;
1300     }
1301
1302     Con *ws = con_get_workspace(focused);
1303     Con *current;
1304     bool success = false;
1305     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1306         if ((to_floating && current->type != CT_FLOATING_CON) ||
1307             (!to_floating && current->type == CT_FLOATING_CON))
1308             continue;
1309
1310         cmd_focus_force_focus(con_descend_focused(current));
1311         success = true;
1312         break;
1313     }
1314
1315     if (success) {
1316         cmd_output->needs_tree_render = true;
1317         ysuccess(true);
1318     } else {
1319         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1320     }
1321 }
1322
1323 /*
1324  * Implementation of 'focus parent|child'.
1325  *
1326  */
1327 void cmd_focus_level(I3_CMD, const char *level) {
1328     DLOG("level = %s\n", level);
1329     bool success = false;
1330
1331     /* Focusing the parent can only be allowed if the newly
1332      * focused container won't escape the fullscreen container. */
1333     if (strcmp(level, "parent") == 0) {
1334         if (focused && focused->parent) {
1335             if (con_fullscreen_permits_focusing(focused->parent))
1336                 success = level_up();
1337             else
1338                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1339         }
1340     }
1341
1342     /* Focusing a child should always be allowed. */
1343     else
1344         success = level_down();
1345
1346     cmd_output->needs_tree_render = success;
1347     // XXX: default reply for now, make this a better reply
1348     ysuccess(success);
1349 }
1350
1351 /*
1352  * Implementation of 'focus'.
1353  *
1354  */
1355 void cmd_focus(I3_CMD) {
1356     DLOG("current_match = %p\n", current_match);
1357
1358     if (match_is_empty(current_match)) {
1359         ELOG("You have to specify which window/container should be focused.\n");
1360         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1361
1362         yerror("You have to specify which window/container should be focused");
1363
1364         return;
1365     }
1366
1367     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1368     int count = 0;
1369     owindow *current;
1370     TAILQ_FOREACH(current, &owindows, owindows) {
1371         Con *ws = con_get_workspace(current->con);
1372         /* If no workspace could be found, this was a dock window.
1373          * Just skip it, you cannot focus dock windows. */
1374         if (!ws)
1375             continue;
1376
1377         /* In case this is a scratchpad window, call scratchpad_show(). */
1378         if (ws == __i3_scratch) {
1379             scratchpad_show(current->con);
1380             count++;
1381             /* While for the normal focus case we can change focus multiple
1382              * times and only a single window ends up focused, we could show
1383              * multiple scratchpad windows. So, rather break here. */
1384             break;
1385         }
1386
1387         /* If the container is not on the current workspace,
1388          * workspace_show() will switch to a different workspace and (if
1389          * enabled) trigger a mouse pointer warp to the currently focused
1390          * container (!) on the target workspace.
1391          *
1392          * Therefore, before calling workspace_show(), we make sure that
1393          * 'current' will be focused on the workspace. However, we cannot
1394          * just con_focus(current) because then the pointer will not be
1395          * warped at all (the code thinks we are already there).
1396          *
1397          * So we focus 'current' to make it the currently focused window of
1398          * the target workspace, then revert focus. */
1399         Con *currently_focused = focused;
1400         cmd_focus_force_focus(current->con);
1401         con_activate(currently_focused);
1402
1403         /* Now switch to the workspace, then focus */
1404         workspace_show(ws);
1405         LOG("focusing %p / %s\n", current->con, current->con->name);
1406         con_activate(current->con);
1407         count++;
1408     }
1409
1410     if (count > 1)
1411         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1412             "while only exactly one container can be focused at a time.\n",
1413             count);
1414
1415     cmd_output->needs_tree_render = true;
1416     ysuccess(count > 0);
1417 }
1418
1419 /*
1420  * Implementation of 'fullscreen enable|toggle [global]' and
1421  *                   'fullscreen disable'
1422  *
1423  */
1424 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1425     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1426     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1427     owindow *current;
1428
1429     HANDLE_EMPTY_MATCH;
1430
1431     TAILQ_FOREACH(current, &owindows, owindows) {
1432         DLOG("matching: %p / %s\n", current->con, current->con->name);
1433         if (strcmp(action, "toggle") == 0) {
1434             con_toggle_fullscreen(current->con, mode);
1435         } else if (strcmp(action, "enable") == 0) {
1436             con_enable_fullscreen(current->con, mode);
1437         } else if (strcmp(action, "disable") == 0) {
1438             con_disable_fullscreen(current->con);
1439         }
1440     }
1441
1442     cmd_output->needs_tree_render = true;
1443     // XXX: default reply for now, make this a better reply
1444     ysuccess(true);
1445 }
1446
1447 /*
1448  * Implementation of 'sticky enable|disable|toggle'.
1449  *
1450  */
1451 void cmd_sticky(I3_CMD, const char *action) {
1452     DLOG("%s sticky on window\n", action);
1453     HANDLE_EMPTY_MATCH;
1454
1455     owindow *current;
1456     TAILQ_FOREACH(current, &owindows, owindows) {
1457         if (current->con->window == NULL) {
1458             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1459             continue;
1460         }
1461         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1462
1463         bool sticky = false;
1464         if (strcmp(action, "enable") == 0)
1465             sticky = true;
1466         else if (strcmp(action, "disable") == 0)
1467             sticky = false;
1468         else if (strcmp(action, "toggle") == 0)
1469             sticky = !current->con->sticky;
1470
1471         current->con->sticky = sticky;
1472         ewmh_update_sticky(current->con->window->id, sticky);
1473     }
1474
1475     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1476      * sure it gets pushed to the front now. */
1477     output_push_sticky_windows(focused);
1478
1479     ewmh_update_wm_desktop();
1480
1481     cmd_output->needs_tree_render = true;
1482     ysuccess(true);
1483 }
1484
1485 /*
1486  * Implementation of 'move <direction> [<pixels> [px]]'.
1487  *
1488  */
1489 void cmd_move_direction(I3_CMD, const char *direction_str, long move_px) {
1490     owindow *current;
1491     HANDLE_EMPTY_MATCH;
1492
1493     Con *initially_focused = focused;
1494     direction_t direction = parse_direction(direction_str);
1495
1496     TAILQ_FOREACH(current, &owindows, owindows) {
1497         DLOG("moving in direction %s, px %ld\n", direction_str, move_px);
1498         if (con_is_floating(current->con)) {
1499             DLOG("floating move with %ld pixels\n", move_px);
1500             Rect newrect = current->con->parent->rect;
1501
1502             switch (direction) {
1503                 case D_LEFT:
1504                     newrect.x -= move_px;
1505                     break;
1506                 case D_RIGHT:
1507                     newrect.x += move_px;
1508                     break;
1509                 case D_UP:
1510                     newrect.y -= move_px;
1511                     break;
1512                 case D_DOWN:
1513                     newrect.y += move_px;
1514                     break;
1515             }
1516
1517             floating_reposition(current->con->parent, newrect);
1518         } else {
1519             tree_move(current->con, direction);
1520             cmd_output->needs_tree_render = true;
1521         }
1522     }
1523
1524     /* the move command should not disturb focus */
1525     if (focused != initially_focused)
1526         con_activate(initially_focused);
1527
1528     // XXX: default reply for now, make this a better reply
1529     ysuccess(true);
1530 }
1531
1532 /*
1533  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1534  *
1535  */
1536 void cmd_layout(I3_CMD, const char *layout_str) {
1537     HANDLE_EMPTY_MATCH;
1538
1539     layout_t layout;
1540     if (!layout_from_name(layout_str, &layout)) {
1541         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1542         return;
1543     }
1544
1545     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1546
1547     owindow *current;
1548     TAILQ_FOREACH(current, &owindows, owindows) {
1549         if (con_is_docked(current->con)) {
1550             ELOG("cannot change layout of a docked container, skipping it.\n");
1551             continue;
1552         }
1553
1554         DLOG("matching: %p / %s\n", current->con, current->con->name);
1555         con_set_layout(current->con, layout);
1556     }
1557
1558     cmd_output->needs_tree_render = true;
1559     // XXX: default reply for now, make this a better reply
1560     ysuccess(true);
1561 }
1562
1563 /*
1564  * Implementation of 'layout toggle [all|split]'.
1565  *
1566  */
1567 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1568     owindow *current;
1569
1570     if (toggle_mode == NULL)
1571         toggle_mode = "default";
1572
1573     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1574
1575     /* check if the match is empty, not if the result is empty */
1576     if (match_is_empty(current_match))
1577         con_toggle_layout(focused, toggle_mode);
1578     else {
1579         TAILQ_FOREACH(current, &owindows, owindows) {
1580             DLOG("matching: %p / %s\n", current->con, current->con->name);
1581             con_toggle_layout(current->con, toggle_mode);
1582         }
1583     }
1584
1585     cmd_output->needs_tree_render = true;
1586     // XXX: default reply for now, make this a better reply
1587     ysuccess(true);
1588 }
1589
1590 /*
1591  * Implementation of 'exit'.
1592  *
1593  */
1594 void cmd_exit(I3_CMD) {
1595     LOG("Exiting due to user command.\n");
1596 #ifdef I3_ASAN_ENABLED
1597     __lsan_do_leak_check();
1598 #endif
1599     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1600     unlink(config.ipc_socket_path);
1601     xcb_disconnect(conn);
1602     exit(0);
1603
1604     /* unreached */
1605 }
1606
1607 /*
1608  * Implementation of 'reload'.
1609  *
1610  */
1611 void cmd_reload(I3_CMD) {
1612     LOG("reloading\n");
1613     kill_nagbar(&config_error_nagbar_pid, false);
1614     kill_nagbar(&command_error_nagbar_pid, false);
1615     load_configuration(conn, NULL, true);
1616     x_set_i3_atoms();
1617     /* Send an IPC event just in case the ws names have changed */
1618     ipc_send_workspace_event("reload", NULL, NULL);
1619     /* Send an update event for the barconfig just in case it has changed */
1620     update_barconfig();
1621
1622     // XXX: default reply for now, make this a better reply
1623     ysuccess(true);
1624 }
1625
1626 /*
1627  * Implementation of 'restart'.
1628  *
1629  */
1630 void cmd_restart(I3_CMD) {
1631     LOG("restarting i3\n");
1632     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1633     unlink(config.ipc_socket_path);
1634     /* We need to call this manually since atexit handlers don’t get called
1635      * when exec()ing */
1636     purge_zerobyte_logfile();
1637     i3_restart(false);
1638
1639     // XXX: default reply for now, make this a better reply
1640     ysuccess(true);
1641 }
1642
1643 /*
1644  * Implementation of 'open'.
1645  *
1646  */
1647 void cmd_open(I3_CMD) {
1648     LOG("opening new container\n");
1649     Con *con = tree_open_con(NULL, NULL);
1650     con->layout = L_SPLITH;
1651     con_activate(con);
1652
1653     y(map_open);
1654     ystr("success");
1655     y(bool, true);
1656     ystr("id");
1657     y(integer, (uintptr_t)con);
1658     y(map_close);
1659
1660     cmd_output->needs_tree_render = true;
1661 }
1662
1663 /*
1664  * Implementation of 'focus output <output>'.
1665  *
1666  */
1667 void cmd_focus_output(I3_CMD, const char *name) {
1668     owindow *current;
1669
1670     DLOG("name = %s\n", name);
1671
1672     HANDLE_EMPTY_MATCH;
1673
1674     /* get the output */
1675     Output *current_output = NULL;
1676     Output *output;
1677
1678     TAILQ_FOREACH(current, &owindows, owindows)
1679     current_output = get_output_for_con(current->con);
1680     assert(current_output != NULL);
1681
1682     output = get_output_from_string(current_output, name);
1683
1684     if (!output) {
1685         LOG("No such output found.\n");
1686         ysuccess(false);
1687         return;
1688     }
1689
1690     /* get visible workspace on output */
1691     Con *ws = NULL;
1692     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1693     if (!ws) {
1694         ysuccess(false);
1695         return;
1696     }
1697
1698     workspace_show(ws);
1699
1700     cmd_output->needs_tree_render = true;
1701     // XXX: default reply for now, make this a better reply
1702     ysuccess(true);
1703 }
1704
1705 /*
1706  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1707  *
1708  */
1709 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1710     bool has_error = false;
1711
1712     owindow *current;
1713     HANDLE_EMPTY_MATCH;
1714
1715     TAILQ_FOREACH(current, &owindows, owindows) {
1716         if (!con_is_floating(current->con)) {
1717             ELOG("Cannot change position. The window/container is not floating\n");
1718
1719             if (!has_error) {
1720                 yerror("Cannot change position of a window/container because it is not floating.");
1721                 has_error = true;
1722             }
1723
1724             continue;
1725         }
1726
1727         Rect newrect = current->con->parent->rect;
1728
1729         DLOG("moving to position %ld %ld\n", x, y);
1730         newrect.x = x;
1731         newrect.y = y;
1732
1733         if (!floating_reposition(current->con->parent, newrect)) {
1734             yerror("Cannot move window/container out of bounds.");
1735             has_error = true;
1736         }
1737     }
1738
1739     if (!has_error)
1740         ysuccess(true);
1741 }
1742
1743 /*
1744  * Implementation of 'move [window|container] [to] [absolute] position center
1745  *
1746  */
1747 void cmd_move_window_to_center(I3_CMD, const char *method) {
1748     bool has_error = false;
1749     HANDLE_EMPTY_MATCH;
1750
1751     owindow *current;
1752     TAILQ_FOREACH(current, &owindows, owindows) {
1753         Con *floating_con = con_inside_floating(current->con);
1754         if (floating_con == NULL) {
1755             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1756                  current->con, current->con->name);
1757
1758             if (!has_error) {
1759                 yerror("Cannot change position of a window/container because it is not floating.");
1760                 has_error = true;
1761             }
1762
1763             continue;
1764         }
1765
1766         if (strcmp(method, "absolute") == 0) {
1767             DLOG("moving to absolute center\n");
1768             floating_center(floating_con, croot->rect);
1769
1770             floating_maybe_reassign_ws(floating_con);
1771             cmd_output->needs_tree_render = true;
1772         }
1773
1774         if (strcmp(method, "position") == 0) {
1775             DLOG("moving to center\n");
1776             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1777
1778             cmd_output->needs_tree_render = true;
1779         }
1780     }
1781
1782     // XXX: default reply for now, make this a better reply
1783     if (!has_error)
1784         ysuccess(true);
1785 }
1786
1787 /*
1788  * Implementation of 'move [window|container] [to] position mouse'
1789  *
1790  */
1791 void cmd_move_window_to_mouse(I3_CMD) {
1792     HANDLE_EMPTY_MATCH;
1793
1794     owindow *current;
1795     TAILQ_FOREACH(current, &owindows, owindows) {
1796         Con *floating_con = con_inside_floating(current->con);
1797         if (floating_con == NULL) {
1798             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1799                  current->con, current->con->name);
1800             continue;
1801         }
1802
1803         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1804         floating_move_to_pointer(floating_con);
1805     }
1806
1807     cmd_output->needs_tree_render = true;
1808     ysuccess(true);
1809 }
1810
1811 /*
1812  * Implementation of 'move scratchpad'.
1813  *
1814  */
1815 void cmd_move_scratchpad(I3_CMD) {
1816     DLOG("should move window to scratchpad\n");
1817     owindow *current;
1818
1819     HANDLE_EMPTY_MATCH;
1820
1821     TAILQ_FOREACH(current, &owindows, owindows) {
1822         DLOG("matching: %p / %s\n", current->con, current->con->name);
1823         scratchpad_move(current->con);
1824     }
1825
1826     cmd_output->needs_tree_render = true;
1827     // XXX: default reply for now, make this a better reply
1828     ysuccess(true);
1829 }
1830
1831 /*
1832  * Implementation of 'scratchpad show'.
1833  *
1834  */
1835 void cmd_scratchpad_show(I3_CMD) {
1836     DLOG("should show scratchpad window\n");
1837     owindow *current;
1838     bool result = false;
1839
1840     if (match_is_empty(current_match)) {
1841         result = scratchpad_show(NULL);
1842     } else {
1843         TAILQ_FOREACH(current, &owindows, owindows) {
1844             DLOG("matching: %p / %s\n", current->con, current->con->name);
1845             result |= scratchpad_show(current->con);
1846         }
1847     }
1848
1849     cmd_output->needs_tree_render = true;
1850
1851     ysuccess(result);
1852 }
1853
1854 /*
1855  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1856  *
1857  */
1858 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1859     HANDLE_EMPTY_MATCH;
1860
1861     owindow *match = TAILQ_FIRST(&owindows);
1862     if (match == NULL) {
1863         DLOG("No match found for swapping.\n");
1864         return;
1865     }
1866
1867     Con *con;
1868     if (strcmp(mode, "id") == 0) {
1869         long target;
1870         if (!parse_long(arg, &target, 0)) {
1871             yerror("Failed to parse %s into a window id.\n", arg);
1872             return;
1873         }
1874
1875         con = con_by_window_id(target);
1876     } else if (strcmp(mode, "con_id") == 0) {
1877         long target;
1878         if (!parse_long(arg, &target, 0)) {
1879             yerror("Failed to parse %s into a container id.\n", arg);
1880             return;
1881         }
1882
1883         con = con_by_con_id(target);
1884     } else if (strcmp(mode, "mark") == 0) {
1885         con = con_by_mark(arg);
1886     } else {
1887         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1888         return;
1889     }
1890
1891     if (con == NULL) {
1892         yerror("Could not find container for %s = %s\n", mode, arg);
1893         return;
1894     }
1895
1896     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1897         DLOG("More than one container matched the swap command, only using the first one.");
1898     }
1899
1900     if (match->con == NULL) {
1901         DLOG("Match %p has no container.\n", match);
1902         ysuccess(false);
1903         return;
1904     }
1905
1906     DLOG("Swapping %p with %p.\n", match->con, con);
1907     bool result = con_swap(match->con, con);
1908
1909     cmd_output->needs_tree_render = true;
1910     ysuccess(result);
1911 }
1912
1913 /*
1914  * Implementation of 'title_format <format>'
1915  *
1916  */
1917 void cmd_title_format(I3_CMD, const char *format) {
1918     DLOG("setting title_format to \"%s\"\n", format);
1919     HANDLE_EMPTY_MATCH;
1920
1921     owindow *current;
1922     TAILQ_FOREACH(current, &owindows, owindows) {
1923         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1924         FREE(current->con->title_format);
1925
1926         /* If we only display the title without anything else, we can skip the parsing step,
1927          * so we remove the title format altogether. */
1928         if (strcasecmp(format, "%title") != 0) {
1929             current->con->title_format = sstrdup(format);
1930
1931             if (current->con->window != NULL) {
1932                 i3String *formatted_title = con_parse_title_format(current->con);
1933                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1934                 I3STRING_FREE(formatted_title);
1935             }
1936         } else {
1937             if (current->con->window != NULL) {
1938                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1939                 ewmh_update_visible_name(current->con->window->id, NULL);
1940             }
1941         }
1942
1943         if (current->con->window != NULL) {
1944             /* Make sure the window title is redrawn immediately. */
1945             current->con->window->name_x_changed = true;
1946         } else {
1947             /* For windowless containers we also need to force the redrawing. */
1948             FREE(current->con->deco_render_params);
1949         }
1950     }
1951
1952     cmd_output->needs_tree_render = true;
1953     ysuccess(true);
1954 }
1955
1956 /*
1957  * Implementation of 'rename workspace [<name>] to <name>'
1958  *
1959  */
1960 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1961     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1962         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1963         ysuccess(false);
1964         return;
1965     }
1966     if (old_name) {
1967         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1968     } else {
1969         LOG("Renaming current workspace to \"%s\"\n", new_name);
1970     }
1971
1972     Con *workspace;
1973     if (old_name) {
1974         workspace = get_existing_workspace_by_name(old_name);
1975     } else {
1976         workspace = con_get_workspace(focused);
1977         old_name = workspace->name;
1978     }
1979
1980     if (!workspace) {
1981         yerror("Old workspace \"%s\" not found", old_name);
1982         return;
1983     }
1984
1985     Con *check_dest = get_existing_workspace_by_name(new_name);
1986
1987     /* If check_dest == workspace, the user might be changing the case of the
1988      * workspace, or it might just be a no-op. */
1989     if (check_dest != NULL && check_dest != workspace) {
1990         yerror("New workspace \"%s\" already exists", new_name);
1991         return;
1992     }
1993
1994     /* Change the name and try to parse it as a number. */
1995     /* old_name might refer to workspace->name, so copy it before free()ing */
1996     char *old_name_copy = sstrdup(old_name);
1997     FREE(workspace->name);
1998     workspace->name = sstrdup(new_name);
1999
2000     workspace->num = ws_name_to_number(new_name);
2001     LOG("num = %d\n", workspace->num);
2002
2003     /* By re-attaching, the sort order will be correct afterwards. */
2004     Con *previously_focused = focused;
2005     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
2006     Con *parent = workspace->parent;
2007     con_detach(workspace);
2008     con_attach(workspace, parent, false);
2009
2010     /* Move the workspace to the correct output if it has an assignment */
2011     struct Workspace_Assignment *assignment = NULL;
2012     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
2013         if (assignment->output == NULL)
2014             continue;
2015         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
2016             continue;
2017         }
2018
2019         Output *target_output = get_output_by_name(assignment->output, true);
2020         if (!target_output) {
2021             LOG("Could not get output named \"%s\"\n", assignment->output);
2022             continue;
2023         }
2024         if (!output_triggers_assignment(target_output, assignment)) {
2025             continue;
2026         }
2027         workspace_move_to_output(workspace, target_output);
2028
2029         break;
2030     }
2031
2032     bool can_restore_focus = previously_focused != NULL;
2033     /* NB: If previously_focused is a workspace we can't work directly with it
2034      * since it might have been cleaned up by workspace_show() already,
2035      * depending on the focus order/number of other workspaces on the output.
2036      * Instead, we loop through the available workspaces and only focus
2037      * previously_focused if we still find it. */
2038     if (previously_focused_content) {
2039         Con *workspace = NULL;
2040         GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2041         can_restore_focus &= (workspace != NULL);
2042     }
2043
2044     if (can_restore_focus) {
2045         /* Restore the previous focus since con_attach messes with the focus. */
2046         workspace_show(con_get_workspace(previously_focused));
2047         con_focus(previously_focused);
2048     }
2049
2050     cmd_output->needs_tree_render = true;
2051     ysuccess(true);
2052
2053     ipc_send_workspace_event("rename", workspace, NULL);
2054     ewmh_update_desktop_names();
2055     ewmh_update_desktop_viewport();
2056     ewmh_update_current_desktop();
2057
2058     startup_sequence_rename_workspace(old_name_copy, new_name);
2059     free(old_name_copy);
2060 }
2061
2062 /*
2063  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2064  *
2065  */
2066 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2067     int mode = M_DOCK;
2068     bool toggle = false;
2069     if (strcmp(bar_mode, "dock") == 0)
2070         mode = M_DOCK;
2071     else if (strcmp(bar_mode, "hide") == 0)
2072         mode = M_HIDE;
2073     else if (strcmp(bar_mode, "invisible") == 0)
2074         mode = M_INVISIBLE;
2075     else if (strcmp(bar_mode, "toggle") == 0)
2076         toggle = true;
2077     else {
2078         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2079         return false;
2080     }
2081
2082     bool changed_sth = false;
2083     Barconfig *current = NULL;
2084     TAILQ_FOREACH(current, &barconfigs, configs) {
2085         if (bar_id && strcmp(current->id, bar_id) != 0)
2086             continue;
2087
2088         if (toggle)
2089             mode = (current->mode + 1) % 2;
2090
2091         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2092         current->mode = mode;
2093         changed_sth = true;
2094
2095         if (bar_id)
2096             break;
2097     }
2098
2099     if (bar_id && !changed_sth) {
2100         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2101         return false;
2102     }
2103
2104     return true;
2105 }
2106
2107 /*
2108  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2109  *
2110  */
2111 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2112     int hidden_state = S_SHOW;
2113     bool toggle = false;
2114     if (strcmp(bar_hidden_state, "hide") == 0)
2115         hidden_state = S_HIDE;
2116     else if (strcmp(bar_hidden_state, "show") == 0)
2117         hidden_state = S_SHOW;
2118     else if (strcmp(bar_hidden_state, "toggle") == 0)
2119         toggle = true;
2120     else {
2121         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2122         return false;
2123     }
2124
2125     bool changed_sth = false;
2126     Barconfig *current = NULL;
2127     TAILQ_FOREACH(current, &barconfigs, configs) {
2128         if (bar_id && strcmp(current->id, bar_id) != 0)
2129             continue;
2130
2131         if (toggle)
2132             hidden_state = (current->hidden_state + 1) % 2;
2133
2134         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2135         current->hidden_state = hidden_state;
2136         changed_sth = true;
2137
2138         if (bar_id)
2139             break;
2140     }
2141
2142     if (bar_id && !changed_sth) {
2143         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2144         return false;
2145     }
2146
2147     return true;
2148 }
2149
2150 /*
2151  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2152  *
2153  */
2154 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2155     bool ret;
2156     if (strcmp(bar_type, "mode") == 0)
2157         ret = cmd_bar_mode(bar_value, bar_id);
2158     else if (strcmp(bar_type, "hidden_state") == 0)
2159         ret = cmd_bar_hidden_state(bar_value, bar_id);
2160     else {
2161         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2162         ret = false;
2163     }
2164
2165     ysuccess(ret);
2166     if (!ret)
2167         return;
2168
2169     update_barconfig();
2170 }
2171
2172 /*
2173  * Implementation of 'shmlog <size>|toggle|on|off'
2174  *
2175  */
2176 void cmd_shmlog(I3_CMD, const char *argument) {
2177     if (!strcmp(argument, "toggle"))
2178         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2179         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2180     else if (!strcmp(argument, "on"))
2181         shmlog_size = default_shmlog_size;
2182     else if (!strcmp(argument, "off"))
2183         shmlog_size = 0;
2184     else {
2185         long new_size = 0;
2186         if (!parse_long(argument, &new_size, 0)) {
2187             yerror("Failed to parse %s into a shmlog size.\n", argument);
2188             return;
2189         }
2190         /* If shm logging now, restart logging with the new size. */
2191         if (shmlog_size > 0) {
2192             shmlog_size = 0;
2193             LOG("Restarting shm logging...\n");
2194             init_logging();
2195         }
2196         shmlog_size = (int)new_size;
2197     }
2198     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2199     init_logging();
2200     update_shmlog_atom();
2201     ysuccess(true);
2202 }
2203
2204 /*
2205  * Implementation of 'debuglog toggle|on|off'
2206  *
2207  */
2208 void cmd_debuglog(I3_CMD, const char *argument) {
2209     bool logging = get_debug_logging();
2210     if (!strcmp(argument, "toggle")) {
2211         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2212         set_debug_logging(!logging);
2213     } else if (!strcmp(argument, "on") && !logging) {
2214         LOG("Enabling debug logging\n");
2215         set_debug_logging(true);
2216     } else if (!strcmp(argument, "off") && logging) {
2217         LOG("Disabling debug logging\n");
2218         set_debug_logging(false);
2219     }
2220     // XXX: default reply for now, make this a better reply
2221     ysuccess(true);
2222 }