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 static void cmd_resize_floating(I3_CMD, const char *way, const char *direction, Con *floating_con, int px) {
 423     LOG("floating resize\n");
 424     Rect old_rect = floating_con->rect;
 425     Con *focused_con = con_descend_focused(floating_con);
 426
 427     /* ensure that resize will take place even if pixel increment is smaller than
 428      * height increment or width increment.
 429      * fixes #1011 */
 430     const i3Window *window = focused_con->window;
 431     if (window != NULL) {
 432         if (strcmp(direction, "up") == 0 || strcmp(direction, "down") == 0 ||
 433             strcmp(direction, "height") == 0) {
 434             if (px < 0)
 435                 px = (-px < window->height_increment) ? -window->height_increment : px;
 436             else
 437                 px = (px < window->height_increment) ? window->height_increment : px;
 438         } else if (strcmp(direction, "left") == 0 || strcmp(direction, "right") == 0) {
 439             if (px < 0)
 440                 px = (-px < window->width_increment) ? -window->width_increment : px;
 441             else
 442                 px = (px < window->width_increment) ? window->width_increment : px;
 443         }
 444     }
 445
 446     if (strcmp(direction, "up") == 0) {
 447         floating_con->rect.height += px;
 448     } else if (strcmp(direction, "down") == 0 || strcmp(direction, "height") == 0) {
 449         floating_con->rect.height += px;
 450     } else if (strcmp(direction, "left") == 0) {
 451         floating_con->rect.width += px;
 452     } else {
 453         floating_con->rect.width += px;
 454     }
 455
 456     floating_check_size(floating_con);
 457
 458     /* Did we actually resize anything or did the size constraints prevent us?
 459      * If we could not resize, exit now to not move the window. */
 460     if (memcmp(&old_rect, &(floating_con->rect), sizeof(Rect)) == 0)
 461         return;
 462
 463     if (strcmp(direction, "up") == 0) {
 464         floating_con->rect.y -= (floating_con->rect.height - old_rect.height);
 465     } else if (strcmp(direction, "left") == 0) {
 466         floating_con->rect.x -= (floating_con->rect.width - old_rect.width);
 467     }
 468
 469     /* If this is a scratchpad window, don't auto center it from now on. */
 470     if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
 471         floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
 472 }
 473
 474 static bool cmd_resize_tiling_direction(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 475     LOG("tiling resize\n");
 476     Con *second = NULL;
 477     Con *first = current;
 478     direction_t search_direction;
 479     if (!strcmp(direction, "left"))
 480         search_direction = D_LEFT;
 481     else if (!strcmp(direction, "right"))
 482         search_direction = D_RIGHT;
 483     else if (!strcmp(direction, "up"))
 484         search_direction = D_UP;
 485     else
 486         search_direction = D_DOWN;
 487
 488     bool res = resize_find_tiling_participants(&first, &second, search_direction, false);
 489     if (!res) {
 490         LOG("No second container in this direction found.\n");
 491         ysuccess(false);
 492         return false;
 493     }
 494
 495     /* get the default percentage */
 496     int children = con_num_children(first->parent);
 497     LOG("ins. %d children\n", children);
 498     double percentage = 1.0 / children;
 499     LOG("default percentage = %f\n", percentage);
 500
 501     /* resize */
 502     LOG("first->percent before = %f\n", first->percent);
 503     LOG("second->percent before = %f\n", second->percent);
 504     if (first->percent == 0.0)
 505         first->percent = percentage;
 506     if (second->percent == 0.0)
 507         second->percent = percentage;
 508     double new_first_percent = first->percent + ((double)ppt / 100.0);
 509     double new_second_percent = second->percent - ((double)ppt / 100.0);
 510     LOG("new_first_percent = %f\n", new_first_percent);
 511     LOG("new_second_percent = %f\n", new_second_percent);
 512     /* Ensure that the new percentages are positive. */
 513     if (new_first_percent > 0.0 && new_second_percent > 0.0) {
 514         first->percent = new_first_percent;
 515         second->percent = new_second_percent;
 516         LOG("first->percent after = %f\n", first->percent);
 517         LOG("second->percent after = %f\n", second->percent);
 518     } else {
 519         LOG("Not resizing, already at minimum size\n");
 520     }
 521
 522     return true;
 523 }
 524
 525 static bool cmd_resize_tiling_width_height(I3_CMD, Con *current, const char *way, const char *direction, int ppt) {
 526     LOG("width/height resize\n");
 527
 528     /* get the appropriate current container (skip stacked/tabbed cons) */
 529     Con *dummy = NULL;
 530     direction_t search_direction = (strcmp(direction, "width") == 0 ? D_LEFT : D_DOWN);
 531     bool search_result = resize_find_tiling_participants(&current, &dummy, search_direction, true);
 532     if (search_result == false) {
 533         ysuccess(false);
 534         return false;
 535     }
 536
 537     /* get the default percentage */
 538     int children = con_num_children(current->parent);
 539     LOG("ins. %d children\n", children);
 540     double percentage = 1.0 / children;
 541     LOG("default percentage = %f\n", percentage);
 542
 543     /* Ensure all the other children have a percentage set. */
 544     Con *child;
 545     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 546         LOG("child->percent = %f (child %p)\n", child->percent, child);
 547         if (child->percent == 0.0)
 548             child->percent = percentage;
 549     }
 550
 551     double new_current_percent = current->percent + ((double)ppt / 100.0);
 552     double subtract_percent = ((double)ppt / 100.0) / (children - 1);
 553     LOG("new_current_percent = %f\n", new_current_percent);
 554     LOG("subtract_percent = %f\n", subtract_percent);
 555     /* Ensure that the new percentages are positive. */
 556     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 557         if (child == current)
 558             continue;
 559         if (child->percent - subtract_percent <= 0.0) {
 560             LOG("Not resizing, already at minimum size (child %p would end up with a size of %.f\n", child, child->percent - subtract_percent);
 561             ysuccess(false);
 562             return false;
 563         }
 564     }
 565     if (new_current_percent <= 0.0) {
 566         LOG("Not resizing, already at minimum size\n");
 567         ysuccess(false);
 568         return false;
 569     }
 570
 571     current->percent = new_current_percent;
 572     LOG("current->percent after = %f\n", current->percent);
 573
 574     TAILQ_FOREACH(child, &(current->parent->nodes_head), nodes) {
 575         if (child == current)
 576             continue;
 577         child->percent -= subtract_percent;
 578         LOG("child->percent after (%p) = %f\n", child, child->percent);
 579     }
 580
 581     return true;
 582 }
 583
 584 /*
 585  * Implementation of 'resize grow|shrink <direction> [<px> px] [or <ppt> ppt]'.
 586  *
 587  */
 588 void cmd_resize(I3_CMD, const char *way, const char *direction, long resize_px, long resize_ppt) {
 589     DLOG("resizing in way %s, direction %s, px %ld or ppt %ld\n", way, direction, resize_px, resize_ppt);
 590     if (strcmp(way, "shrink") == 0) {
 591         resize_px *= -1;
 592         resize_ppt *= -1;
 593     }
 594
 595     HANDLE_EMPTY_MATCH;
 596
 597     owindow *current;
 598     TAILQ_FOREACH(current, &owindows, owindows) {
 599         /* Don't handle dock windows (issue #1201) */
 600         if (current->con->window && current->con->window->dock) {
 601             DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 602             continue;
 603         }
 604
 605         Con *floating_con;
 606         if ((floating_con = con_inside_floating(current->con))) {
 607             cmd_resize_floating(current_match, cmd_output, way, direction, floating_con, resize_px);
 608         } else {
 609             if (strcmp(direction, "width") == 0 ||
 610                 strcmp(direction, "height") == 0) {
 611                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 612                                                     current->con, way, direction, resize_ppt))
 613                     return;
 614             } else {
 615                 if (!cmd_resize_tiling_direction(current_match, cmd_output,
 616                                                  current->con, way, direction, resize_ppt))
 617                     return;
 618             }
 619         }
 620     }
 621
 622     cmd_output->needs_tree_render = true;
 623     // XXX: default reply for now, make this a better reply
 624     ysuccess(true);
 625 }
 626
 627 /*
 628  * Implementation of 'resize set <width> [px | ppt] <height> [px | ppt]'.
 629  *
 630  */
 631 void cmd_resize_set(I3_CMD, long cwidth, const char *mode_width, long cheight, const char *mode_height) {
 632     DLOG("resizing to %ld %s x %ld %s\n", cwidth, mode_width, cheight, mode_height);
 633     if (cwidth < 0 || cheight < 0) {
 634         ELOG("Resize failed: dimensions cannot be negative (was %ld %s x %ld %s)\n", cwidth, mode_width, cheight, mode_height);
 635         return;
 636     }
 637
 638     HANDLE_EMPTY_MATCH;
 639
 640     owindow *current;
 641     bool success = true;
 642     TAILQ_FOREACH(current, &owindows, owindows) {
 643         Con *floating_con;
 644         if ((floating_con = con_inside_floating(current->con))) {
 645             Con *output = con_get_output(floating_con);
 646             if (cwidth == 0) {
 647                 cwidth = floating_con->rect.width;
 648             } else if (mode_width && strcmp(mode_width, "ppt") == 0) {
 649                 cwidth = output->rect.width * ((double)cwidth / 100.0);
 650             }
 651             if (cheight == 0) {
 652                 cheight = floating_con->rect.height;
 653             } else if (mode_height && strcmp(mode_height, "ppt") == 0) {
 654                 cheight = output->rect.height * ((double)cheight / 100.0);
 655             }
 656             floating_resize(floating_con, cwidth, cheight);
 657         } else {
 658             if (current->con->window && current->con->window->dock) {
 659                 DLOG("This is a dock window. Not resizing (con = %p)\n)", current->con);
 660                 continue;
 661             }
 662
 663             if (cwidth > 0 && mode_width && strcmp(mode_width, "ppt") == 0) {
 664                 /* get the appropriate current container (skip stacked/tabbed cons) */
 665                 Con *target = current->con;
 666                 Con *dummy;
 667                 resize_find_tiling_participants(&target, &dummy, D_LEFT, true);
 668
 669                 /* Calculate new size for the target container */
 670                 double current_percent = target->percent;
 671                 char *action_string;
 672                 long adjustment;
 673
 674                 if (current_percent > cwidth) {
 675                     action_string = "shrink";
 676                     adjustment = (int)(current_percent * 100) - cwidth;
 677                 } else {
 678                     action_string = "grow";
 679                     adjustment = cwidth - (int)(current_percent * 100);
 680                 }
 681
 682                 /* perform resizing and report failure if not possible */
 683                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 684                                                     target, action_string, "width", adjustment)) {
 685                     success = false;
 686                 }
 687             }
 688
 689             if (cheight > 0 && mode_width && strcmp(mode_width, "ppt") == 0) {
 690                 /* get the appropriate current container (skip stacked/tabbed cons) */
 691                 Con *target = current->con;
 692                 Con *dummy;
 693                 resize_find_tiling_participants(&target, &dummy, D_DOWN, true);
 694
 695                 /* Calculate new size for the target container */
 696                 double current_percent = target->percent;
 697                 char *action_string;
 698                 long adjustment;
 699
 700                 if (current_percent > cheight) {
 701                     action_string = "shrink";
 702                     adjustment = (int)(current_percent * 100) - cheight;
 703                 } else {
 704                     action_string = "grow";
 705                     adjustment = cheight - (int)(current_percent * 100);
 706                 }
 707
 708                 /* perform resizing and report failure if not possible */
 709                 if (!cmd_resize_tiling_width_height(current_match, cmd_output,
 710                                                     target, action_string, "height", adjustment)) {
 711                     success = false;
 712                 }
 713             }
 714         }
 715     }
 716
 717     cmd_output->needs_tree_render = true;
 718     ysuccess(success);
 719 }
 720
 721 static int border_width_from_style(border_style_t border_style, long border_width, Con *con) {
 722     if (border_style == BS_NONE) {
 723         return 0;
 724     }
 725     if (border_width >= 0) {
 726         return logical_px(border_width);
 727     }
 728
 729     const bool is_floating = con_inside_floating(con) != NULL;
 730     /* Load the configured defaults. */
 731     if (is_floating && border_style == config.default_floating_border) {
 732         return config.default_floating_border_width;
 733     } else if (!is_floating && border_style == config.default_border) {
 734         return config.default_border_width;
 735     } else {
 736         /* Use some hardcoded values. */
 737         return logical_px(border_style == BS_NORMAL ? 2 : 1);
 738     }
 739 }
 740
 741 /*
 742  * Implementation of 'border normal|pixel [<n>]', 'border none|1pixel|toggle'.
 743  *
 744  */
 745 void cmd_border(I3_CMD, const char *border_style_str, long border_width) {
 746     DLOG("border style should be changed to %s with border width %ld\n", border_style_str, border_width);
 747     owindow *current;
 748
 749     HANDLE_EMPTY_MATCH;
 750
 751     TAILQ_FOREACH(current, &owindows, owindows) {
 752         DLOG("matching: %p / %s\n", current->con, current->con->name);
 753
 754         border_style_t border_style;
 755         if (strcmp(border_style_str, "toggle") == 0) {
 756             border_style = (current->con->border_style + 1) % 3;
 757         } else if (strcmp(border_style_str, "normal") == 0) {
 758             border_style = BS_NORMAL;
 759         } else if (strcmp(border_style_str, "pixel") == 0) {
 760             border_style = BS_PIXEL;
 761         } else if (strcmp(border_style_str, "none") == 0) {
 762             border_style = BS_NONE;
 763         } else {
 764             ELOG("BUG: called with border_style=%s\n", border_style_str);
 765             ysuccess(false);
 766             return;
 767         }
 768
 769         const int con_border_width = border_width_from_style(border_style, border_width, current->con);
 770         con_set_border_style(current->con, border_style, con_border_width);
 771     }
 772
 773     cmd_output->needs_tree_render = true;
 774     // XXX: default reply for now, make this a better reply
 775     ysuccess(true);
 776 }
 777
 778 /*
 779  * Implementation of 'nop <comment>'.
 780  *
 781  */
 782 void cmd_nop(I3_CMD, const char *comment) {
 783     LOG("-------------------------------------------------\n");
 784     LOG("  NOP: %s\n", comment);
 785     LOG("-------------------------------------------------\n");
 786     ysuccess(true);
 787 }
 788
 789 /*
 790  * Implementation of 'append_layout <path>'.
 791  *
 792  */
 793 void cmd_append_layout(I3_CMD, const char *cpath) {
 794     LOG("Appending layout \"%s\"\n", cpath);
 795
 796     /* Make sure we allow paths like '~/.i3/layout.json' */
 797     char *path = resolve_tilde(cpath);
 798
 799     char *buf = NULL;
 800     ssize_t len;
 801     if ((len = slurp(path, &buf)) < 0) {
 802         /* slurp already logged an error. */
 803         goto out;
 804     }
 805
 806     if (!json_validate(buf, len)) {
 807         ELOG("Could not parse \"%s\" as JSON, not loading.\n", path);
 808         yerror("Could not parse \"%s\" as JSON.", path);
 809         goto out;
 810     }
 811
 812     json_content_t content = json_determine_content(buf, len);
 813     LOG("JSON content = %d\n", content);
 814     if (content == JSON_CONTENT_UNKNOWN) {
 815         ELOG("Could not determine the contents of \"%s\", not loading.\n", path);
 816         yerror("Could not determine the contents of \"%s\".", path);
 817         goto out;
 818     }
 819
 820     Con *parent = focused;
 821     if (content == JSON_CONTENT_WORKSPACE) {
 822         parent = output_get_content(con_get_output(parent));
 823     } else {
 824         /* We need to append the layout to a split container, since a leaf
 825          * container must not have any children (by definition).
 826          * Note that we explicitly check for workspaces, since they are okay for
 827          * this purpose, but con_accepts_window() returns false for workspaces. */
 828         while (parent->type != CT_WORKSPACE && !con_accepts_window(parent))
 829             parent = parent->parent;
 830     }
 831     DLOG("Appending to parent=%p instead of focused=%p\n", parent, focused);
 832     char *errormsg = NULL;
 833     tree_append_json(parent, buf, len, &errormsg);
 834     if (errormsg != NULL) {
 835         yerror(errormsg);
 836         free(errormsg);
 837         /* Note that we continue executing since tree_append_json() has
 838          * side-effects — user-provided layouts can be partly valid, partly
 839          * invalid, leading to half of the placeholder containers being
 840          * created. */
 841     } else {
 842         ysuccess(true);
 843     }
 844
 845     // XXX: This is a bit of a kludge. Theoretically, render_con(parent,
 846     // false); should be enough, but when sending 'workspace 4; append_layout
 847     // /tmp/foo.json', the needs_tree_render == true of the workspace command
 848     // is not executed yet and will be batched with append_layout’s
 849     // needs_tree_render after the parser finished. We should check if that is
 850     // necessary at all.
 851     render_con(croot, false);
 852
 853     restore_open_placeholder_windows(parent);
 854
 855     if (content == JSON_CONTENT_WORKSPACE)
 856         ipc_send_workspace_event("restored", parent, NULL);
 857
 858     cmd_output->needs_tree_render = true;
 859 out:
 860     free(path);
 861     free(buf);
 862 }
 863
 864 /*
 865  * Implementation of 'workspace next|prev|next_on_output|prev_on_output'.
 866  *
 867  */
 868 void cmd_workspace(I3_CMD, const char *which) {
 869     Con *ws;
 870
 871     DLOG("which=%s\n", which);
 872
 873     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 874         LOG("Cannot switch workspace while in global fullscreen\n");
 875         ysuccess(false);
 876         return;
 877     }
 878
 879     if (strcmp(which, "next") == 0)
 880         ws = workspace_next();
 881     else if (strcmp(which, "prev") == 0)
 882         ws = workspace_prev();
 883     else if (strcmp(which, "next_on_output") == 0)
 884         ws = workspace_next_on_output();
 885     else if (strcmp(which, "prev_on_output") == 0)
 886         ws = workspace_prev_on_output();
 887     else {
 888         ELOG("BUG: called with which=%s\n", which);
 889         ysuccess(false);
 890         return;
 891     }
 892
 893     workspace_show(ws);
 894
 895     cmd_output->needs_tree_render = true;
 896     // XXX: default reply for now, make this a better reply
 897     ysuccess(true);
 898 }
 899
 900 /*
 901  * Implementation of 'workspace [--no-auto-back-and-forth] number <name>'
 902  *
 903  */
 904 void cmd_workspace_number(I3_CMD, const char *which, const char *_no_auto_back_and_forth) {
 905     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 906
 907     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 908         LOG("Cannot switch workspace while in global fullscreen\n");
 909         ysuccess(false);
 910         return;
 911     }
 912
 913     long parsed_num = ws_name_to_number(which);
 914     if (parsed_num == -1) {
 915         LOG("Could not parse initial part of \"%s\" as a number.\n", which);
 916         yerror("Could not parse number \"%s\"", which);
 917         return;
 918     }
 919
 920     Con *workspace = get_existing_workspace_by_num(parsed_num);
 921     if (!workspace) {
 922         LOG("There is no workspace with number %ld, creating a new one.\n", parsed_num);
 923         ysuccess(true);
 924         workspace_show_by_name(which);
 925         cmd_output->needs_tree_render = true;
 926         return;
 927     }
 928     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, workspace->name)) {
 929         ysuccess(true);
 930         return;
 931     }
 932     workspace_show(workspace);
 933
 934     cmd_output->needs_tree_render = true;
 935     // XXX: default reply for now, make this a better reply
 936     ysuccess(true);
 937 }
 938
 939 /*
 940  * Implementation of 'workspace back_and_forth'.
 941  *
 942  */
 943 void cmd_workspace_back_and_forth(I3_CMD) {
 944     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 945         LOG("Cannot switch workspace while in global fullscreen\n");
 946         ysuccess(false);
 947         return;
 948     }
 949
 950     workspace_back_and_forth();
 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 [--no-auto-back-and-forth] <name>'
 959  *
 960  */
 961 void cmd_workspace_name(I3_CMD, const char *name, const char *_no_auto_back_and_forth) {
 962     const bool no_auto_back_and_forth = (_no_auto_back_and_forth != NULL);
 963
 964     if (strncasecmp(name, "__", strlen("__")) == 0) {
 965         LOG("You cannot switch to the i3-internal workspaces (\"%s\").\n", name);
 966         ysuccess(false);
 967         return;
 968     }
 969
 970     if (con_get_fullscreen_con(croot, CF_GLOBAL)) {
 971         LOG("Cannot switch workspace while in global fullscreen\n");
 972         ysuccess(false);
 973         return;
 974     }
 975
 976     DLOG("should switch to workspace %s\n", name);
 977     if (!no_auto_back_and_forth && maybe_back_and_forth(cmd_output, name)) {
 978         ysuccess(true);
 979         return;
 980     }
 981     workspace_show_by_name(name);
 982
 983     cmd_output->needs_tree_render = true;
 984     // XXX: default reply for now, make this a better reply
 985     ysuccess(true);
 986 }
 987
 988 /*
 989  * Implementation of 'mark [--add|--replace] [--toggle] <mark>'
 990  *
 991  */
 992 void cmd_mark(I3_CMD, const char *mark, const char *mode, const char *toggle) {
 993     HANDLE_EMPTY_MATCH;
 994
 995     owindow *current = TAILQ_FIRST(&owindows);
 996     if (current == NULL) {
 997         ysuccess(false);
 998         return;
 999     }
1000
1001     /* Marks must be unique, i.e., no two windows must have the same mark. */
1002     if (current != TAILQ_LAST(&owindows, owindows_head)) {
1003         yerror("A mark must not be put onto more than one window");
1004         return;
1005     }
1006
1007     DLOG("matching: %p / %s\n", current->con, current->con->name);
1008
1009     mark_mode_t mark_mode = (mode == NULL || strcmp(mode, "--replace") == 0) ? MM_REPLACE : MM_ADD;
1010     if (toggle != NULL) {
1011         con_mark_toggle(current->con, mark, mark_mode);
1012     } else {
1013         con_mark(current->con, mark, mark_mode);
1014     }
1015
1016     cmd_output->needs_tree_render = true;
1017     // XXX: default reply for now, make this a better reply
1018     ysuccess(true);
1019 }
1020
1021 /*
1022  * Implementation of 'unmark [mark]'
1023  *
1024  */
1025 void cmd_unmark(I3_CMD, const char *mark) {
1026     if (match_is_empty(current_match)) {
1027         con_unmark(NULL, mark);
1028     } else {
1029         owindow *current;
1030         TAILQ_FOREACH(current, &owindows, owindows) {
1031             con_unmark(current->con, mark);
1032         }
1033     }
1034
1035     cmd_output->needs_tree_render = true;
1036     // XXX: default reply for now, make this a better reply
1037     ysuccess(true);
1038 }
1039
1040 /*
1041  * Implementation of 'mode <string>'.
1042  *
1043  */
1044 void cmd_mode(I3_CMD, const char *mode) {
1045     DLOG("mode=%s\n", mode);
1046     switch_mode(mode);
1047
1048     // XXX: default reply for now, make this a better reply
1049     ysuccess(true);
1050 }
1051
1052 /*
1053  * Implementation of 'move [window|container] [to] output <str>'.
1054  *
1055  */
1056 void cmd_move_con_to_output(I3_CMD, const char *name) {
1057     DLOG("Should move window to output \"%s\".\n", name);
1058     HANDLE_EMPTY_MATCH;
1059
1060     owindow *current;
1061     bool had_error = false;
1062     TAILQ_FOREACH(current, &owindows, owindows) {
1063         DLOG("matching: %p / %s\n", current->con, current->con->name);
1064
1065         had_error |= !con_move_to_output_name(current->con, name, true);
1066     }
1067
1068     cmd_output->needs_tree_render = true;
1069     ysuccess(!had_error);
1070 }
1071
1072 /*
1073  * Implementation of 'move [container|window] [to] mark <str>'.
1074  *
1075  */
1076 void cmd_move_con_to_mark(I3_CMD, const char *mark) {
1077     DLOG("moving window to mark \"%s\"\n", mark);
1078
1079     HANDLE_EMPTY_MATCH;
1080
1081     bool result = true;
1082     owindow *current;
1083     TAILQ_FOREACH(current, &owindows, owindows) {
1084         DLOG("moving matched window %p / %s to mark \"%s\"\n", current->con, current->con->name, mark);
1085         result &= con_move_to_mark(current->con, mark);
1086     }
1087
1088     cmd_output->needs_tree_render = true;
1089     ysuccess(result);
1090 }
1091
1092 /*
1093  * Implementation of 'floating enable|disable|toggle'
1094  *
1095  */
1096 void cmd_floating(I3_CMD, const char *floating_mode) {
1097     owindow *current;
1098
1099     DLOG("floating_mode=%s\n", floating_mode);
1100
1101     HANDLE_EMPTY_MATCH;
1102
1103     TAILQ_FOREACH(current, &owindows, owindows) {
1104         DLOG("matching: %p / %s\n", current->con, current->con->name);
1105         if (strcmp(floating_mode, "toggle") == 0) {
1106             DLOG("should toggle mode\n");
1107             toggle_floating_mode(current->con, false);
1108         } else {
1109             DLOG("should switch mode to %s\n", floating_mode);
1110             if (strcmp(floating_mode, "enable") == 0) {
1111                 floating_enable(current->con, false);
1112             } else {
1113                 floating_disable(current->con, false);
1114             }
1115         }
1116     }
1117
1118     cmd_output->needs_tree_render = true;
1119     // XXX: default reply for now, make this a better reply
1120     ysuccess(true);
1121 }
1122
1123 /*
1124  * Implementation of 'move workspace to [output] <str>'.
1125  *
1126  */
1127 void cmd_move_workspace_to_output(I3_CMD, const char *name) {
1128     DLOG("should move workspace to output %s\n", name);
1129
1130     HANDLE_EMPTY_MATCH;
1131
1132     owindow *current;
1133     TAILQ_FOREACH(current, &owindows, owindows) {
1134         Con *ws = con_get_workspace(current->con);
1135         if (con_is_internal(ws)) {
1136             continue;
1137         }
1138
1139         Output *current_output = get_output_for_con(ws);
1140         if (current_output == NULL) {
1141             ELOG("Cannot get current output. This is a bug in i3.\n");
1142             ysuccess(false);
1143             return;
1144         }
1145
1146         Output *target_output = get_output_from_string(current_output, name);
1147         if (!target_output) {
1148             ELOG("Could not get output from string \"%s\"\n", name);
1149             ysuccess(false);
1150             return;
1151         }
1152
1153         bool success = workspace_move_to_output(ws, target_output);
1154         if (!success) {
1155             ELOG("Failed to move workspace to output.\n");
1156             ysuccess(false);
1157             return;
1158         }
1159     }
1160
1161     cmd_output->needs_tree_render = true;
1162     // XXX: default reply for now, make this a better reply
1163     ysuccess(true);
1164 }
1165
1166 /*
1167  * Implementation of 'split v|h|t|vertical|horizontal|toggle'.
1168  *
1169  */
1170 void cmd_split(I3_CMD, const char *direction) {
1171     HANDLE_EMPTY_MATCH;
1172
1173     owindow *current;
1174     LOG("splitting in direction %c\n", direction[0]);
1175     TAILQ_FOREACH(current, &owindows, owindows) {
1176         if (con_is_docked(current->con)) {
1177             ELOG("Cannot split a docked container, skipping.\n");
1178             continue;
1179         }
1180
1181         DLOG("matching: %p / %s\n", current->con, current->con->name);
1182         if (direction[0] == 't') {
1183             layout_t current_layout;
1184             if (current->con->type == CT_WORKSPACE) {
1185                 current_layout = current->con->layout;
1186             } else {
1187                 current_layout = current->con->parent->layout;
1188             }
1189             /* toggling split orientation */
1190             if (current_layout == L_SPLITH) {
1191                 tree_split(current->con, VERT);
1192             } else {
1193                 tree_split(current->con, HORIZ);
1194             }
1195         } else {
1196             tree_split(current->con, (direction[0] == 'v' ? VERT : HORIZ));
1197         }
1198     }
1199
1200     cmd_output->needs_tree_render = true;
1201     // XXX: default reply for now, make this a better reply
1202     ysuccess(true);
1203 }
1204
1205 /*
1206  * Implementation of 'kill [window|client]'.
1207  *
1208  */
1209 void cmd_kill(I3_CMD, const char *kill_mode_str) {
1210     if (kill_mode_str == NULL)
1211         kill_mode_str = "window";
1212
1213     DLOG("kill_mode=%s\n", kill_mode_str);
1214
1215     int kill_mode;
1216     if (strcmp(kill_mode_str, "window") == 0)
1217         kill_mode = KILL_WINDOW;
1218     else if (strcmp(kill_mode_str, "client") == 0)
1219         kill_mode = KILL_CLIENT;
1220     else {
1221         ELOG("BUG: called with kill_mode=%s\n", kill_mode_str);
1222         ysuccess(false);
1223         return;
1224     }
1225
1226     HANDLE_EMPTY_MATCH;
1227
1228     owindow *current;
1229     TAILQ_FOREACH(current, &owindows, owindows) {
1230         con_close(current->con, kill_mode);
1231     }
1232
1233     cmd_output->needs_tree_render = true;
1234     // XXX: default reply for now, make this a better reply
1235     ysuccess(true);
1236 }
1237
1238 /*
1239  * Implementation of 'exec [--no-startup-id] <command>'.
1240  *
1241  */
1242 void cmd_exec(I3_CMD, const char *nosn, const char *command) {
1243     bool no_startup_id = (nosn != NULL);
1244
1245     DLOG("should execute %s, no_startup_id = %d\n", command, no_startup_id);
1246     start_application(command, no_startup_id);
1247
1248     // XXX: default reply for now, make this a better reply
1249     ysuccess(true);
1250 }
1251
1252 /*
1253  * Implementation of 'focus left|right|up|down'.
1254  *
1255  */
1256 void cmd_focus_direction(I3_CMD, const char *direction) {
1257     DLOG("direction = *%s*\n", direction);
1258
1259     if (strcmp(direction, "left") == 0)
1260         tree_next('p', HORIZ);
1261     else if (strcmp(direction, "right") == 0)
1262         tree_next('n', HORIZ);
1263     else if (strcmp(direction, "up") == 0)
1264         tree_next('p', VERT);
1265     else if (strcmp(direction, "down") == 0)
1266         tree_next('n', VERT);
1267     else {
1268         ELOG("Invalid focus direction (%s)\n", direction);
1269         ysuccess(false);
1270         return;
1271     }
1272
1273     cmd_output->needs_tree_render = true;
1274     // XXX: default reply for now, make this a better reply
1275     ysuccess(true);
1276 }
1277
1278 /*
1279  * Focus a container and disable any other fullscreen container not permitting the focus.
1280  *
1281  */
1282 static void cmd_focus_force_focus(Con *con) {
1283     /* Disable fullscreen container in workspace with container to be focused. */
1284     Con *ws = con_get_workspace(con);
1285     Con *fullscreen_on_ws = (focused && focused->fullscreen_mode == CF_GLOBAL) ? focused : con_get_fullscreen_con(ws, CF_OUTPUT);
1286     if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
1287         con_disable_fullscreen(fullscreen_on_ws);
1288     }
1289     con_activate(con);
1290 }
1291
1292 /*
1293  * Implementation of 'focus tiling|floating|mode_toggle'.
1294  *
1295  */
1296 void cmd_focus_window_mode(I3_CMD, const char *window_mode) {
1297     DLOG("window_mode = %s\n", window_mode);
1298
1299     bool to_floating = false;
1300     if (strcmp(window_mode, "mode_toggle") == 0) {
1301         to_floating = !con_inside_floating(focused);
1302     } else if (strcmp(window_mode, "floating") == 0) {
1303         to_floating = true;
1304     } else if (strcmp(window_mode, "tiling") == 0) {
1305         to_floating = false;
1306     }
1307
1308     Con *ws = con_get_workspace(focused);
1309     Con *current;
1310     bool success = false;
1311     TAILQ_FOREACH(current, &(ws->focus_head), focused) {
1312         if ((to_floating && current->type != CT_FLOATING_CON) ||
1313             (!to_floating && current->type == CT_FLOATING_CON))
1314             continue;
1315
1316         cmd_focus_force_focus(con_descend_focused(current));
1317         success = true;
1318         break;
1319     }
1320
1321     if (success) {
1322         cmd_output->needs_tree_render = true;
1323         ysuccess(true);
1324     } else {
1325         yerror("Failed to find a %s container in workspace.", to_floating ? "floating" : "tiling");
1326     }
1327 }
1328
1329 /*
1330  * Implementation of 'focus parent|child'.
1331  *
1332  */
1333 void cmd_focus_level(I3_CMD, const char *level) {
1334     DLOG("level = %s\n", level);
1335     bool success = false;
1336
1337     /* Focusing the parent can only be allowed if the newly
1338      * focused container won't escape the fullscreen container. */
1339     if (strcmp(level, "parent") == 0) {
1340         if (focused && focused->parent) {
1341             if (con_fullscreen_permits_focusing(focused->parent))
1342                 success = level_up();
1343             else
1344                 ELOG("'focus parent': Currently in fullscreen, not going up\n");
1345         }
1346     }
1347
1348     /* Focusing a child should always be allowed. */
1349     else
1350         success = level_down();
1351
1352     cmd_output->needs_tree_render = success;
1353     // XXX: default reply for now, make this a better reply
1354     ysuccess(success);
1355 }
1356
1357 /*
1358  * Implementation of 'focus'.
1359  *
1360  */
1361 void cmd_focus(I3_CMD) {
1362     DLOG("current_match = %p\n", current_match);
1363
1364     if (match_is_empty(current_match)) {
1365         ELOG("You have to specify which window/container should be focused.\n");
1366         ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
1367
1368         yerror("You have to specify which window/container should be focused");
1369
1370         return;
1371     }
1372
1373     Con *__i3_scratch = workspace_get("__i3_scratch", NULL);
1374     int count = 0;
1375     owindow *current;
1376     TAILQ_FOREACH(current, &owindows, owindows) {
1377         Con *ws = con_get_workspace(current->con);
1378         /* If no workspace could be found, this was a dock window.
1379          * Just skip it, you cannot focus dock windows. */
1380         if (!ws)
1381             continue;
1382
1383         /* In case this is a scratchpad window, call scratchpad_show(). */
1384         if (ws == __i3_scratch) {
1385             scratchpad_show(current->con);
1386             count++;
1387             /* While for the normal focus case we can change focus multiple
1388              * times and only a single window ends up focused, we could show
1389              * multiple scratchpad windows. So, rather break here. */
1390             break;
1391         }
1392
1393         /* If the container is not on the current workspace,
1394          * workspace_show() will switch to a different workspace and (if
1395          * enabled) trigger a mouse pointer warp to the currently focused
1396          * container (!) on the target workspace.
1397          *
1398          * Therefore, before calling workspace_show(), we make sure that
1399          * 'current' will be focused on the workspace. However, we cannot
1400          * just con_focus(current) because then the pointer will not be
1401          * warped at all (the code thinks we are already there).
1402          *
1403          * So we focus 'current' to make it the currently focused window of
1404          * the target workspace, then revert focus. */
1405         Con *currently_focused = focused;
1406         cmd_focus_force_focus(current->con);
1407         con_activate(currently_focused);
1408
1409         /* Now switch to the workspace, then focus */
1410         workspace_show(ws);
1411         LOG("focusing %p / %s\n", current->con, current->con->name);
1412         con_activate(current->con);
1413         count++;
1414     }
1415
1416     if (count > 1)
1417         LOG("WARNING: Your criteria for the focus command matches %d containers, "
1418             "while only exactly one container can be focused at a time.\n",
1419             count);
1420
1421     cmd_output->needs_tree_render = true;
1422     ysuccess(count > 0);
1423 }
1424
1425 /*
1426  * Implementation of 'fullscreen enable|toggle [global]' and
1427  *                   'fullscreen disable'
1428  *
1429  */
1430 void cmd_fullscreen(I3_CMD, const char *action, const char *fullscreen_mode) {
1431     fullscreen_mode_t mode = strcmp(fullscreen_mode, "global") == 0 ? CF_GLOBAL : CF_OUTPUT;
1432     DLOG("%s fullscreen, mode = %s\n", action, fullscreen_mode);
1433     owindow *current;
1434
1435     HANDLE_EMPTY_MATCH;
1436
1437     TAILQ_FOREACH(current, &owindows, owindows) {
1438         DLOG("matching: %p / %s\n", current->con, current->con->name);
1439         if (strcmp(action, "toggle") == 0) {
1440             con_toggle_fullscreen(current->con, mode);
1441         } else if (strcmp(action, "enable") == 0) {
1442             con_enable_fullscreen(current->con, mode);
1443         } else if (strcmp(action, "disable") == 0) {
1444             con_disable_fullscreen(current->con);
1445         }
1446     }
1447
1448     cmd_output->needs_tree_render = true;
1449     // XXX: default reply for now, make this a better reply
1450     ysuccess(true);
1451 }
1452
1453 /*
1454  * Implementation of 'sticky enable|disable|toggle'.
1455  *
1456  */
1457 void cmd_sticky(I3_CMD, const char *action) {
1458     DLOG("%s sticky on window\n", action);
1459     HANDLE_EMPTY_MATCH;
1460
1461     owindow *current;
1462     TAILQ_FOREACH(current, &owindows, owindows) {
1463         if (current->con->window == NULL) {
1464             ELOG("only containers holding a window can be made sticky, skipping con = %p\n", current->con);
1465             continue;
1466         }
1467         DLOG("setting sticky for container = %p / %s\n", current->con, current->con->name);
1468
1469         bool sticky = false;
1470         if (strcmp(action, "enable") == 0)
1471             sticky = true;
1472         else if (strcmp(action, "disable") == 0)
1473             sticky = false;
1474         else if (strcmp(action, "toggle") == 0)
1475             sticky = !current->con->sticky;
1476
1477         current->con->sticky = sticky;
1478         ewmh_update_sticky(current->con->window->id, sticky);
1479     }
1480
1481     /* A window we made sticky might not be on a visible workspace right now, so we need to make
1482      * sure it gets pushed to the front now. */
1483     output_push_sticky_windows(focused);
1484
1485     ewmh_update_wm_desktop();
1486
1487     cmd_output->needs_tree_render = true;
1488     ysuccess(true);
1489 }
1490
1491 /*
1492  * Implementation of 'move <direction> [<pixels> [px]]'.
1493  *
1494  */
1495 void cmd_move_direction(I3_CMD, const char *direction, long move_px) {
1496     owindow *current;
1497     HANDLE_EMPTY_MATCH;
1498
1499     Con *initially_focused = focused;
1500
1501     TAILQ_FOREACH(current, &owindows, owindows) {
1502         DLOG("moving in direction %s, px %ld\n", direction, move_px);
1503         if (con_is_floating(current->con)) {
1504             DLOG("floating move with %ld pixels\n", move_px);
1505             Rect newrect = current->con->parent->rect;
1506             if (strcmp(direction, "left") == 0) {
1507                 newrect.x -= move_px;
1508             } else if (strcmp(direction, "right") == 0) {
1509                 newrect.x += move_px;
1510             } else if (strcmp(direction, "up") == 0) {
1511                 newrect.y -= move_px;
1512             } else if (strcmp(direction, "down") == 0) {
1513                 newrect.y += move_px;
1514             }
1515             floating_reposition(current->con->parent, newrect);
1516         } else {
1517             tree_move(current->con, (strcmp(direction, "right") == 0 ? D_RIGHT : (strcmp(direction, "left") == 0 ? D_LEFT : (strcmp(direction, "up") == 0 ? D_UP : D_DOWN))));
1518             cmd_output->needs_tree_render = true;
1519         }
1520     }
1521
1522     /* the move command should not disturb focus */
1523     if (focused != initially_focused)
1524         con_activate(initially_focused);
1525
1526     // XXX: default reply for now, make this a better reply
1527     ysuccess(true);
1528 }
1529
1530 /*
1531  * Implementation of 'layout default|stacked|stacking|tabbed|splitv|splith'.
1532  *
1533  */
1534 void cmd_layout(I3_CMD, const char *layout_str) {
1535     HANDLE_EMPTY_MATCH;
1536
1537     layout_t layout;
1538     if (!layout_from_name(layout_str, &layout)) {
1539         ELOG("Unknown layout \"%s\", this is a mismatch between code and parser spec.\n", layout_str);
1540         return;
1541     }
1542
1543     DLOG("changing layout to %s (%d)\n", layout_str, layout);
1544
1545     owindow *current;
1546     TAILQ_FOREACH(current, &owindows, owindows) {
1547         if (con_is_docked(current->con)) {
1548             ELOG("cannot change layout of a docked container, skipping it.\n");
1549             continue;
1550         }
1551
1552         DLOG("matching: %p / %s\n", current->con, current->con->name);
1553         con_set_layout(current->con, layout);
1554     }
1555
1556     cmd_output->needs_tree_render = true;
1557     // XXX: default reply for now, make this a better reply
1558     ysuccess(true);
1559 }
1560
1561 /*
1562  * Implementation of 'layout toggle [all|split]'.
1563  *
1564  */
1565 void cmd_layout_toggle(I3_CMD, const char *toggle_mode) {
1566     owindow *current;
1567
1568     if (toggle_mode == NULL)
1569         toggle_mode = "default";
1570
1571     DLOG("toggling layout (mode = %s)\n", toggle_mode);
1572
1573     /* check if the match is empty, not if the result is empty */
1574     if (match_is_empty(current_match))
1575         con_toggle_layout(focused, toggle_mode);
1576     else {
1577         TAILQ_FOREACH(current, &owindows, owindows) {
1578             DLOG("matching: %p / %s\n", current->con, current->con->name);
1579             con_toggle_layout(current->con, toggle_mode);
1580         }
1581     }
1582
1583     cmd_output->needs_tree_render = true;
1584     // XXX: default reply for now, make this a better reply
1585     ysuccess(true);
1586 }
1587
1588 /*
1589  * Implementation of 'exit'.
1590  *
1591  */
1592 void cmd_exit(I3_CMD) {
1593     LOG("Exiting due to user command.\n");
1594 #ifdef I3_ASAN_ENABLED
1595     __lsan_do_leak_check();
1596 #endif
1597     ipc_shutdown(SHUTDOWN_REASON_EXIT);
1598     unlink(config.ipc_socket_path);
1599     xcb_disconnect(conn);
1600     exit(0);
1601
1602     /* unreached */
1603 }
1604
1605 /*
1606  * Implementation of 'reload'.
1607  *
1608  */
1609 void cmd_reload(I3_CMD) {
1610     LOG("reloading\n");
1611     kill_nagbar(&config_error_nagbar_pid, false);
1612     kill_nagbar(&command_error_nagbar_pid, false);
1613     load_configuration(conn, NULL, true);
1614     x_set_i3_atoms();
1615     /* Send an IPC event just in case the ws names have changed */
1616     ipc_send_workspace_event("reload", NULL, NULL);
1617     /* Send an update event for the barconfig just in case it has changed */
1618     update_barconfig();
1619
1620     // XXX: default reply for now, make this a better reply
1621     ysuccess(true);
1622 }
1623
1624 /*
1625  * Implementation of 'restart'.
1626  *
1627  */
1628 void cmd_restart(I3_CMD) {
1629     LOG("restarting i3\n");
1630     ipc_shutdown(SHUTDOWN_REASON_RESTART);
1631     unlink(config.ipc_socket_path);
1632     /* We need to call this manually since atexit handlers don’t get called
1633      * when exec()ing */
1634     purge_zerobyte_logfile();
1635     i3_restart(false);
1636
1637     // XXX: default reply for now, make this a better reply
1638     ysuccess(true);
1639 }
1640
1641 /*
1642  * Implementation of 'open'.
1643  *
1644  */
1645 void cmd_open(I3_CMD) {
1646     LOG("opening new container\n");
1647     Con *con = tree_open_con(NULL, NULL);
1648     con->layout = L_SPLITH;
1649     con_activate(con);
1650
1651     y(map_open);
1652     ystr("success");
1653     y(bool, true);
1654     ystr("id");
1655     y(integer, (uintptr_t)con);
1656     y(map_close);
1657
1658     cmd_output->needs_tree_render = true;
1659 }
1660
1661 /*
1662  * Implementation of 'focus output <output>'.
1663  *
1664  */
1665 void cmd_focus_output(I3_CMD, const char *name) {
1666     owindow *current;
1667
1668     DLOG("name = %s\n", name);
1669
1670     HANDLE_EMPTY_MATCH;
1671
1672     /* get the output */
1673     Output *current_output = NULL;
1674     Output *output;
1675
1676     TAILQ_FOREACH(current, &owindows, owindows)
1677     current_output = get_output_for_con(current->con);
1678     assert(current_output != NULL);
1679
1680     output = get_output_from_string(current_output, name);
1681
1682     if (!output) {
1683         LOG("No such output found.\n");
1684         ysuccess(false);
1685         return;
1686     }
1687
1688     /* get visible workspace on output */
1689     Con *ws = NULL;
1690     GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1691     if (!ws) {
1692         ysuccess(false);
1693         return;
1694     }
1695
1696     workspace_show(ws);
1697
1698     cmd_output->needs_tree_render = true;
1699     // XXX: default reply for now, make this a better reply
1700     ysuccess(true);
1701 }
1702
1703 /*
1704  * Implementation of 'move [window|container] [to] [absolute] position <px> [px] <px> [px]
1705  *
1706  */
1707 void cmd_move_window_to_position(I3_CMD, long x, long y) {
1708     bool has_error = false;
1709
1710     owindow *current;
1711     HANDLE_EMPTY_MATCH;
1712
1713     TAILQ_FOREACH(current, &owindows, owindows) {
1714         if (!con_is_floating(current->con)) {
1715             ELOG("Cannot change position. The window/container is not floating\n");
1716
1717             if (!has_error) {
1718                 yerror("Cannot change position of a window/container because it is not floating.");
1719                 has_error = true;
1720             }
1721
1722             continue;
1723         }
1724
1725         Rect newrect = current->con->parent->rect;
1726
1727         DLOG("moving to position %ld %ld\n", x, y);
1728         newrect.x = x;
1729         newrect.y = y;
1730
1731         if (!floating_reposition(current->con->parent, newrect)) {
1732             yerror("Cannot move window/container out of bounds.");
1733             has_error = true;
1734         }
1735     }
1736
1737     if (!has_error)
1738         ysuccess(true);
1739 }
1740
1741 /*
1742  * Implementation of 'move [window|container] [to] [absolute] position center
1743  *
1744  */
1745 void cmd_move_window_to_center(I3_CMD, const char *method) {
1746     bool has_error = false;
1747     HANDLE_EMPTY_MATCH;
1748
1749     owindow *current;
1750     TAILQ_FOREACH(current, &owindows, owindows) {
1751         Con *floating_con = con_inside_floating(current->con);
1752         if (floating_con == NULL) {
1753             ELOG("con %p / %s is not floating, cannot move it to the center.\n",
1754                  current->con, current->con->name);
1755
1756             if (!has_error) {
1757                 yerror("Cannot change position of a window/container because it is not floating.");
1758                 has_error = true;
1759             }
1760
1761             continue;
1762         }
1763
1764         if (strcmp(method, "absolute") == 0) {
1765             DLOG("moving to absolute center\n");
1766             floating_center(floating_con, croot->rect);
1767
1768             floating_maybe_reassign_ws(floating_con);
1769             cmd_output->needs_tree_render = true;
1770         }
1771
1772         if (strcmp(method, "position") == 0) {
1773             DLOG("moving to center\n");
1774             floating_center(floating_con, con_get_workspace(floating_con)->rect);
1775
1776             cmd_output->needs_tree_render = true;
1777         }
1778     }
1779
1780     // XXX: default reply for now, make this a better reply
1781     if (!has_error)
1782         ysuccess(true);
1783 }
1784
1785 /*
1786  * Implementation of 'move [window|container] [to] position mouse'
1787  *
1788  */
1789 void cmd_move_window_to_mouse(I3_CMD) {
1790     HANDLE_EMPTY_MATCH;
1791
1792     owindow *current;
1793     TAILQ_FOREACH(current, &owindows, owindows) {
1794         Con *floating_con = con_inside_floating(current->con);
1795         if (floating_con == NULL) {
1796             DLOG("con %p / %s is not floating, cannot move it to the mouse position.\n",
1797                  current->con, current->con->name);
1798             continue;
1799         }
1800
1801         DLOG("moving floating container %p / %s to cursor position\n", floating_con, floating_con->name);
1802         floating_move_to_pointer(floating_con);
1803     }
1804
1805     cmd_output->needs_tree_render = true;
1806     ysuccess(true);
1807 }
1808
1809 /*
1810  * Implementation of 'move scratchpad'.
1811  *
1812  */
1813 void cmd_move_scratchpad(I3_CMD) {
1814     DLOG("should move window to scratchpad\n");
1815     owindow *current;
1816
1817     HANDLE_EMPTY_MATCH;
1818
1819     TAILQ_FOREACH(current, &owindows, owindows) {
1820         DLOG("matching: %p / %s\n", current->con, current->con->name);
1821         scratchpad_move(current->con);
1822     }
1823
1824     cmd_output->needs_tree_render = true;
1825     // XXX: default reply for now, make this a better reply
1826     ysuccess(true);
1827 }
1828
1829 /*
1830  * Implementation of 'scratchpad show'.
1831  *
1832  */
1833 void cmd_scratchpad_show(I3_CMD) {
1834     DLOG("should show scratchpad window\n");
1835     owindow *current;
1836     bool result = false;
1837
1838     if (match_is_empty(current_match)) {
1839         result = scratchpad_show(NULL);
1840     } else {
1841         TAILQ_FOREACH(current, &owindows, owindows) {
1842             DLOG("matching: %p / %s\n", current->con, current->con->name);
1843             result |= scratchpad_show(current->con);
1844         }
1845     }
1846
1847     cmd_output->needs_tree_render = true;
1848
1849     ysuccess(result);
1850 }
1851
1852 /*
1853  * Implementation of 'swap [container] [with] id|con_id|mark <arg>'.
1854  *
1855  */
1856 void cmd_swap(I3_CMD, const char *mode, const char *arg) {
1857     HANDLE_EMPTY_MATCH;
1858
1859     owindow *match = TAILQ_FIRST(&owindows);
1860     if (match == NULL) {
1861         DLOG("No match found for swapping.\n");
1862         return;
1863     }
1864
1865     Con *con;
1866     if (strcmp(mode, "id") == 0) {
1867         long target;
1868         if (!parse_long(arg, &target, 0)) {
1869             yerror("Failed to parse %s into a window id.\n", arg);
1870             return;
1871         }
1872
1873         con = con_by_window_id(target);
1874     } else if (strcmp(mode, "con_id") == 0) {
1875         long target;
1876         if (!parse_long(arg, &target, 0)) {
1877             yerror("Failed to parse %s into a container id.\n", arg);
1878             return;
1879         }
1880
1881         con = con_by_con_id(target);
1882     } else if (strcmp(mode, "mark") == 0) {
1883         con = con_by_mark(arg);
1884     } else {
1885         yerror("Unhandled swap mode \"%s\". This is a bug.\n", mode);
1886         return;
1887     }
1888
1889     if (con == NULL) {
1890         yerror("Could not find container for %s = %s\n", mode, arg);
1891         return;
1892     }
1893
1894     if (match != TAILQ_LAST(&owindows, owindows_head)) {
1895         DLOG("More than one container matched the swap command, only using the first one.");
1896     }
1897
1898     if (match->con == NULL) {
1899         DLOG("Match %p has no container.\n", match);
1900         ysuccess(false);
1901         return;
1902     }
1903
1904     DLOG("Swapping %p with %p.\n", match->con, con);
1905     bool result = con_swap(match->con, con);
1906
1907     cmd_output->needs_tree_render = true;
1908     ysuccess(result);
1909 }
1910
1911 /*
1912  * Implementation of 'title_format <format>'
1913  *
1914  */
1915 void cmd_title_format(I3_CMD, const char *format) {
1916     DLOG("setting title_format to \"%s\"\n", format);
1917     HANDLE_EMPTY_MATCH;
1918
1919     owindow *current;
1920     TAILQ_FOREACH(current, &owindows, owindows) {
1921         DLOG("setting title_format for %p / %s\n", current->con, current->con->name);
1922         FREE(current->con->title_format);
1923
1924         /* If we only display the title without anything else, we can skip the parsing step,
1925          * so we remove the title format altogether. */
1926         if (strcasecmp(format, "%title") != 0) {
1927             current->con->title_format = sstrdup(format);
1928
1929             if (current->con->window != NULL) {
1930                 i3String *formatted_title = con_parse_title_format(current->con);
1931                 ewmh_update_visible_name(current->con->window->id, i3string_as_utf8(formatted_title));
1932                 I3STRING_FREE(formatted_title);
1933             }
1934         } else {
1935             if (current->con->window != NULL) {
1936                 /* We can remove _NET_WM_VISIBLE_NAME since we don't display a custom title. */
1937                 ewmh_update_visible_name(current->con->window->id, NULL);
1938             }
1939         }
1940
1941         if (current->con->window != NULL) {
1942             /* Make sure the window title is redrawn immediately. */
1943             current->con->window->name_x_changed = true;
1944         } else {
1945             /* For windowless containers we also need to force the redrawing. */
1946             FREE(current->con->deco_render_params);
1947         }
1948     }
1949
1950     cmd_output->needs_tree_render = true;
1951     ysuccess(true);
1952 }
1953
1954 /*
1955  * Implementation of 'rename workspace [<name>] to <name>'
1956  *
1957  */
1958 void cmd_rename_workspace(I3_CMD, const char *old_name, const char *new_name) {
1959     if (strncasecmp(new_name, "__", strlen("__")) == 0) {
1960         LOG("Cannot rename workspace to \"%s\": names starting with __ are i3-internal.\n", new_name);
1961         ysuccess(false);
1962         return;
1963     }
1964     if (old_name) {
1965         LOG("Renaming workspace \"%s\" to \"%s\"\n", old_name, new_name);
1966     } else {
1967         LOG("Renaming current workspace to \"%s\"\n", new_name);
1968     }
1969
1970     Con *workspace;
1971     if (old_name) {
1972         workspace = get_existing_workspace_by_name(old_name);
1973     } else {
1974         workspace = con_get_workspace(focused);
1975         old_name = workspace->name;
1976     }
1977
1978     if (!workspace) {
1979         yerror("Old workspace \"%s\" not found", old_name);
1980         return;
1981     }
1982
1983     Con *check_dest = get_existing_workspace_by_name(new_name);
1984
1985     /* If check_dest == workspace, the user might be changing the case of the
1986      * workspace, or it might just be a no-op. */
1987     if (check_dest != NULL && check_dest != workspace) {
1988         yerror("New workspace \"%s\" already exists", new_name);
1989         return;
1990     }
1991
1992     /* Change the name and try to parse it as a number. */
1993     /* old_name might refer to workspace->name, so copy it before free()ing */
1994     char *old_name_copy = sstrdup(old_name);
1995     FREE(workspace->name);
1996     workspace->name = sstrdup(new_name);
1997
1998     workspace->num = ws_name_to_number(new_name);
1999     LOG("num = %d\n", workspace->num);
2000
2001     /* By re-attaching, the sort order will be correct afterwards. */
2002     Con *previously_focused = focused;
2003     Con *previously_focused_content = focused->type == CT_WORKSPACE ? focused->parent : NULL;
2004     Con *parent = workspace->parent;
2005     con_detach(workspace);
2006     con_attach(workspace, parent, false);
2007
2008     /* Move the workspace to the correct output if it has an assignment */
2009     struct Workspace_Assignment *assignment = NULL;
2010     TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
2011         if (assignment->output == NULL)
2012             continue;
2013         if (strcmp(assignment->name, workspace->name) != 0 && (!name_is_digits(assignment->name) || ws_name_to_number(assignment->name) != workspace->num)) {
2014             continue;
2015         }
2016
2017         Output *target_output = get_output_by_name(assignment->output, true);
2018         if (!target_output) {
2019             LOG("Could not get output named \"%s\"\n", assignment->output);
2020             continue;
2021         }
2022         workspace_move_to_output(workspace, target_output);
2023
2024         bool can_restore_focus = previously_focused != NULL;
2025         /* NB: If previously_focused is a workspace we can't
2026          * work directly with it since it might have been cleaned up by
2027          * workspace_show() already, depending on the
2028          * focus order/number of other workspaces on the output.
2029          * Instead, we loop through the available workspaces and only focus
2030          * previously_focused if we still find it. */
2031         if (previously_focused_content) {
2032             Con *workspace = NULL;
2033             GREP_FIRST(workspace, previously_focused_content, child == previously_focused);
2034             can_restore_focus &= (workspace != NULL);
2035         }
2036
2037         if (can_restore_focus) {
2038             /* Restore the previous focus since con_attach messes with the focus. */
2039             workspace_show(con_get_workspace(previously_focused));
2040             con_activate(previously_focused);
2041         }
2042
2043         break;
2044     }
2045
2046     cmd_output->needs_tree_render = true;
2047     ysuccess(true);
2048
2049     ipc_send_workspace_event("rename", workspace, NULL);
2050     ewmh_update_desktop_names();
2051     ewmh_update_desktop_viewport();
2052     ewmh_update_current_desktop();
2053
2054     startup_sequence_rename_workspace(old_name_copy, new_name);
2055     free(old_name_copy);
2056 }
2057
2058 /*
2059  * Implementation of 'bar mode dock|hide|invisible|toggle [<bar_id>]'
2060  *
2061  */
2062 bool cmd_bar_mode(const char *bar_mode, const char *bar_id) {
2063     int mode = M_DOCK;
2064     bool toggle = false;
2065     if (strcmp(bar_mode, "dock") == 0)
2066         mode = M_DOCK;
2067     else if (strcmp(bar_mode, "hide") == 0)
2068         mode = M_HIDE;
2069     else if (strcmp(bar_mode, "invisible") == 0)
2070         mode = M_INVISIBLE;
2071     else if (strcmp(bar_mode, "toggle") == 0)
2072         toggle = true;
2073     else {
2074         ELOG("Unknown bar mode \"%s\", this is a mismatch between code and parser spec.\n", bar_mode);
2075         return false;
2076     }
2077
2078     bool changed_sth = false;
2079     Barconfig *current = NULL;
2080     TAILQ_FOREACH(current, &barconfigs, configs) {
2081         if (bar_id && strcmp(current->id, bar_id) != 0)
2082             continue;
2083
2084         if (toggle)
2085             mode = (current->mode + 1) % 2;
2086
2087         DLOG("Changing bar mode of bar_id '%s' to '%s (%d)'\n", current->id, bar_mode, mode);
2088         current->mode = mode;
2089         changed_sth = true;
2090
2091         if (bar_id)
2092             break;
2093     }
2094
2095     if (bar_id && !changed_sth) {
2096         DLOG("Changing bar mode of bar_id %s failed, bar_id not found.\n", bar_id);
2097         return false;
2098     }
2099
2100     return true;
2101 }
2102
2103 /*
2104  * Implementation of 'bar hidden_state hide|show|toggle [<bar_id>]'
2105  *
2106  */
2107 bool cmd_bar_hidden_state(const char *bar_hidden_state, const char *bar_id) {
2108     int hidden_state = S_SHOW;
2109     bool toggle = false;
2110     if (strcmp(bar_hidden_state, "hide") == 0)
2111         hidden_state = S_HIDE;
2112     else if (strcmp(bar_hidden_state, "show") == 0)
2113         hidden_state = S_SHOW;
2114     else if (strcmp(bar_hidden_state, "toggle") == 0)
2115         toggle = true;
2116     else {
2117         ELOG("Unknown bar state \"%s\", this is a mismatch between code and parser spec.\n", bar_hidden_state);
2118         return false;
2119     }
2120
2121     bool changed_sth = false;
2122     Barconfig *current = NULL;
2123     TAILQ_FOREACH(current, &barconfigs, configs) {
2124         if (bar_id && strcmp(current->id, bar_id) != 0)
2125             continue;
2126
2127         if (toggle)
2128             hidden_state = (current->hidden_state + 1) % 2;
2129
2130         DLOG("Changing bar hidden_state of bar_id '%s' to '%s (%d)'\n", current->id, bar_hidden_state, hidden_state);
2131         current->hidden_state = hidden_state;
2132         changed_sth = true;
2133
2134         if (bar_id)
2135             break;
2136     }
2137
2138     if (bar_id && !changed_sth) {
2139         DLOG("Changing bar hidden_state of bar_id %s failed, bar_id not found.\n", bar_id);
2140         return false;
2141     }
2142
2143     return true;
2144 }
2145
2146 /*
2147  * Implementation of 'bar (hidden_state hide|show|toggle)|(mode dock|hide|invisible|toggle) [<bar_id>]'
2148  *
2149  */
2150 void cmd_bar(I3_CMD, const char *bar_type, const char *bar_value, const char *bar_id) {
2151     bool ret;
2152     if (strcmp(bar_type, "mode") == 0)
2153         ret = cmd_bar_mode(bar_value, bar_id);
2154     else if (strcmp(bar_type, "hidden_state") == 0)
2155         ret = cmd_bar_hidden_state(bar_value, bar_id);
2156     else {
2157         ELOG("Unknown bar option type \"%s\", this is a mismatch between code and parser spec.\n", bar_type);
2158         ret = false;
2159     }
2160
2161     ysuccess(ret);
2162     if (!ret)
2163         return;
2164
2165     update_barconfig();
2166 }
2167
2168 /*
2169  * Implementation of 'shmlog <size>|toggle|on|off'
2170  *
2171  */
2172 void cmd_shmlog(I3_CMD, const char *argument) {
2173     if (!strcmp(argument, "toggle"))
2174         /* Toggle shm log, if size is not 0. If it is 0, set it to default. */
2175         shmlog_size = shmlog_size ? -shmlog_size : default_shmlog_size;
2176     else if (!strcmp(argument, "on"))
2177         shmlog_size = default_shmlog_size;
2178     else if (!strcmp(argument, "off"))
2179         shmlog_size = 0;
2180     else {
2181         long new_size = 0;
2182         if (!parse_long(argument, &new_size, 0)) {
2183             yerror("Failed to parse %s into a shmlog size.\n", argument);
2184             return;
2185         }
2186         /* If shm logging now, restart logging with the new size. */
2187         if (shmlog_size > 0) {
2188             shmlog_size = 0;
2189             LOG("Restarting shm logging...\n");
2190             init_logging();
2191         }
2192         shmlog_size = (int)new_size;
2193     }
2194     LOG("%s shm logging\n", shmlog_size > 0 ? "Enabling" : "Disabling");
2195     init_logging();
2196     update_shmlog_atom();
2197     ysuccess(true);
2198 }
2199
2200 /*
2201  * Implementation of 'debuglog toggle|on|off'
2202  *
2203  */
2204 void cmd_debuglog(I3_CMD, const char *argument) {
2205     bool logging = get_debug_logging();
2206     if (!strcmp(argument, "toggle")) {
2207         LOG("%s debug logging\n", logging ? "Disabling" : "Enabling");
2208         set_debug_logging(!logging);
2209     } else if (!strcmp(argument, "on") && !logging) {
2210         LOG("Enabling debug logging\n");
2211         set_debug_logging(true);
2212     } else if (!strcmp(argument, "off") && logging) {
2213         LOG("Disabling debug logging\n");
2214         set_debug_logging(false);
2215     }
2216     // XXX: default reply for now, make this a better reply
2217     ysuccess(true);
2218 }