git.sur5r.net Git - i3/i3/blob - src/cmdparse.y

   1 %{
   2 /*
   3  * vim:ts=4:sw=4:expandtab
   4  *
   5  * i3 - an improved dynamic tiling window manager
   6  * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
   7  *
   8  * cmdparse.y: the parser for commands you send to i3 (or bind on keys)
   9  *
  10
  11  */
  12 #include <sys/types.h>
  13 #include <sys/stat.h>
  14 #include <unistd.h>
  15 #include <fcntl.h>
  16 #include <limits.h>
  17
  18 #include "all.h"
  19
  20 /** When the command did not include match criteria (!), we use the currently
  21  * focused command. Do not confuse this case with a command which included
  22  * criteria but which did not match any windows. This macro has to be called in
  23  * every command.
  24  */
  25 #define HANDLE_EMPTY_MATCH do { \
  26     if (match_is_empty(&current_match)) { \
  27         owindow *ow = smalloc(sizeof(owindow)); \
  28         ow->con = focused; \
  29         TAILQ_INIT(&owindows); \
  30         TAILQ_INSERT_TAIL(&owindows, ow, owindows); \
  31     } \
  32 } while (0)
  33
  34 typedef struct yy_buffer_state *YY_BUFFER_STATE;
  35 extern int cmdyylex(struct context *context);
  36 extern int cmdyyparse(void);
  37 extern FILE *cmdyyin;
  38 YY_BUFFER_STATE cmdyy_scan_string(const char *);
  39
  40 static struct context *context;
  41 static Match current_match;
  42
  43 /*
  44  * Helper data structure for an operation window (window on which the operation
  45  * will be performed). Used to build the TAILQ owindows.
  46  *
  47  */
  48 typedef struct owindow {
  49     Con *con;
  50     TAILQ_ENTRY(owindow) owindows;
  51 } owindow;
  52 static TAILQ_HEAD(owindows_head, owindow) owindows;
  53
  54 /* Holds the JSON which will be returned via IPC or NULL for the default return
  55  * message */
  56 static char *json_output;
  57
  58 /* We don’t need yydebug for now, as we got decent error messages using
  59  * yyerror(). Should you ever want to extend the parser, it might be handy
  60  * to just comment it in again, so it stays here. */
  61 //int cmdyydebug = 1;
  62
  63 void cmdyyerror(const char *error_message) {
  64     ELOG("\n");
  65     ELOG("CMD: %s\n", error_message);
  66     ELOG("CMD: in command:\n");
  67     ELOG("CMD:   %s\n", context->line_copy);
  68     ELOG("CMD:   ");
  69     for (int c = 1; c <= context->last_column; c++)
  70         if (c >= context->first_column)
  71                 printf("^");
  72         else printf(" ");
  73     printf("\n");
  74     ELOG("\n");
  75     context->compact_error = sstrdup(error_message);
  76 }
  77
  78 int cmdyywrap() {
  79     return 1;
  80 }
  81
  82 char *parse_cmd(const char *new) {
  83     LOG("COMMAND: *%s*\n", new);
  84     cmdyy_scan_string(new);
  85
  86     match_init(&current_match);
  87     context = scalloc(sizeof(struct context));
  88     context->filename = "cmd";
  89     FREE(json_output);
  90     if (cmdyyparse() != 0) {
  91         fprintf(stderr, "Could not parse command\n");
  92         asprintf(&json_output, "{\"success\":false, \"error\":\"%s at position %d\"}",
  93                  context->compact_error, context->first_column);
  94         FREE(context->line_copy);
  95         FREE(context->compact_error);
  96         free(context);
  97         return json_output;
  98     }
  99     printf("done, json output = %s\n", json_output);
 100
 101     FREE(context->line_copy);
 102     FREE(context->compact_error);
 103     free(context);
 104     return json_output;
 105 }
 106
 107 %}
 108
 109 %error-verbose
 110 %lex-param { struct context *context }
 111
 112 %union {
 113     char *string;
 114     char chr;
 115     int number;
 116 }
 117
 118 %token              TOK_EXEC            "exec"
 119 %token              TOK_EXIT            "exit"
 120 %token              TOK_RELOAD          "reload"
 121 %token              TOK_RESTART         "restart"
 122 %token              TOK_KILL            "kill"
 123 %token              TOK_WINDOW          "window"
 124 %token              TOK_CLIENT          "client"
 125 %token              TOK_FULLSCREEN      "fullscreen"
 126 %token              TOK_GLOBAL          "global"
 127 %token              TOK_LAYOUT          "layout"
 128 %token              TOK_DEFAULT         "default"
 129 %token              TOK_STACKED         "stacked"
 130 %token              TOK_TABBED          "tabbed"
 131 %token              TOK_BORDER          "border"
 132 %token              TOK_NORMAL          "normal"
 133 %token              TOK_NONE            "none"
 134 %token              TOK_1PIXEL          "1pixel"
 135 %token              TOK_MODE            "mode"
 136 %token              TOK_TILING          "tiling"
 137 %token              TOK_FLOATING        "floating"
 138 %token              TOK_MODE_TOGGLE     "mode_toggle"
 139 %token              TOK_ENABLE          "enable"
 140 %token              TOK_DISABLE         "disable"
 141 %token              TOK_WORKSPACE       "workspace"
 142 %token              TOK_TOGGLE          "toggle"
 143 %token              TOK_FOCUS           "focus"
 144 %token              TOK_MOVE            "move"
 145 %token              TOK_OPEN            "open"
 146 %token              TOK_NEXT            "next"
 147 %token              TOK_PREV            "prev"
 148 %token              TOK_SPLIT           "split"
 149 %token              TOK_HORIZONTAL      "horizontal"
 150 %token              TOK_VERTICAL        "vertical"
 151 %token              TOK_UP              "up"
 152 %token              TOK_DOWN            "down"
 153 %token              TOK_LEFT            "left"
 154 %token              TOK_RIGHT           "right"
 155 %token              TOK_PARENT          "parent"
 156 %token              TOK_CHILD           "child"
 157 %token              TOK_APPEND_LAYOUT   "append_layout"
 158 %token              TOK_MARK            "mark"
 159 %token              TOK_RESIZE          "resize"
 160 %token              TOK_GROW            "grow"
 161 %token              TOK_SHRINK          "shrink"
 162 %token              TOK_PX              "px"
 163 %token              TOK_OR              "or"
 164 %token              TOK_PPT             "ppt"
 165 %token              TOK_NOP             "nop"
 166
 167 %token              TOK_CLASS           "class"
 168 %token              TOK_ID              "id"
 169 %token              TOK_CON_ID          "con_id"
 170 %token              TOK_TITLE           "title"
 171
 172 %token  <string>    STR                 "<string>"
 173 %token  <number>    NUMBER              "<number>"
 174
 175 %type   <number>    direction
 176 %type   <number>    split_direction
 177 %type   <number>    fullscreen_mode
 178 %type   <number>    level
 179 %type   <number>    window_mode
 180 %type   <number>    boolean
 181 %type   <number>    border_style
 182 %type   <number>    layout_mode
 183 %type   <number>    resize_px
 184 %type   <number>    resize_way
 185 %type   <number>    resize_tiling
 186 %type   <number>    optional_kill_mode
 187
 188 %%
 189
 190 commands:
 191     commands ';' command
 192     | command
 193     {
 194         owindow *current;
 195
 196         printf("single command completely parsed, dropping state...\n");
 197         while (!TAILQ_EMPTY(&owindows)) {
 198             current = TAILQ_FIRST(&owindows);
 199             TAILQ_REMOVE(&owindows, current, owindows);
 200             free(current);
 201         }
 202         match_init(&current_match);
 203     }
 204     ;
 205
 206 command:
 207     match operations
 208     ;
 209
 210 match:
 211     | matchstart criteria matchend
 212     {
 213         printf("match parsed\n");
 214     }
 215     ;
 216
 217 matchstart:
 218     '['
 219     {
 220         printf("start\n");
 221         match_init(&current_match);
 222         TAILQ_INIT(&owindows);
 223         /* copy all_cons */
 224         Con *con;
 225         TAILQ_FOREACH(con, &all_cons, all_cons) {
 226             owindow *ow = smalloc(sizeof(owindow));
 227             ow->con = con;
 228             TAILQ_INSERT_TAIL(&owindows, ow, owindows);
 229         }
 230     }
 231     ;
 232
 233 matchend:
 234     ']'
 235     {
 236         owindow *next, *current;
 237
 238         printf("match specification finished, matching...\n");
 239         /* copy the old list head to iterate through it and start with a fresh
 240          * list which will contain only matching windows */
 241         struct owindows_head old = owindows;
 242         TAILQ_INIT(&owindows);
 243         for (next = TAILQ_FIRST(&old); next != TAILQ_END(&old);) {
 244             /* make a copy of the next pointer and advance the pointer to the
 245              * next element as we are going to invalidate the element’s
 246              * next/prev pointers by calling TAILQ_INSERT_TAIL later */
 247             current = next;
 248             next = TAILQ_NEXT(next, owindows);
 249
 250             printf("checking if con %p / %s matches\n", current->con, current->con->name);
 251             if (current_match.con_id != NULL) {
 252                 if (current_match.con_id == current->con) {
 253                     printf("matches container!\n");
 254                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 255
 256                 }
 257             } else if (current_match.mark != NULL && current->con->mark != NULL &&
 258                     strcasecmp(current_match.mark, current->con->mark) == 0) {
 259                 printf("match by mark\n");
 260                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 261
 262             } else {
 263                 if (current->con->window == NULL)
 264                     continue;
 265                 if (match_matches_window(&current_match, current->con->window)) {
 266                     printf("matches window!\n");
 267                     TAILQ_INSERT_TAIL(&owindows, current, owindows);
 268                 } else {
 269                     printf("doesnt match\n");
 270                     free(current);
 271                 }
 272             }
 273         }
 274
 275         TAILQ_FOREACH(current, &owindows, owindows) {
 276             printf("matching: %p / %s\n", current->con, current->con->name);
 277         }
 278
 279     }
 280     ;
 281
 282 criteria:
 283     criteria criterion
 284     | criterion
 285     ;
 286
 287 criterion:
 288     TOK_CLASS '=' STR
 289     {
 290         printf("criteria: class = %s\n", $3);
 291         current_match.class = $3;
 292     }
 293     | TOK_CON_ID '=' STR
 294     {
 295         printf("criteria: id = %s\n", $3);
 296         char *end;
 297         long parsed = strtol($3, &end, 10);
 298         if (parsed == LONG_MIN ||
 299             parsed == LONG_MAX ||
 300             parsed < 0 ||
 301             (end && *end != '\0')) {
 302             ELOG("Could not parse con id \"%s\"\n", $3);
 303         } else {
 304             current_match.con_id = (Con*)parsed;
 305             printf("id as int = %p\n", current_match.con_id);
 306         }
 307     }
 308     | TOK_ID '=' STR
 309     {
 310         printf("criteria: window id = %s\n", $3);
 311         char *end;
 312         long parsed = strtol($3, &end, 10);
 313         if (parsed == LONG_MIN ||
 314             parsed == LONG_MAX ||
 315             parsed < 0 ||
 316             (end && *end != '\0')) {
 317             ELOG("Could not parse window id \"%s\"\n", $3);
 318         } else {
 319             current_match.id = parsed;
 320             printf("window id as int = %d\n", current_match.id);
 321         }
 322     }
 323     | TOK_MARK '=' STR
 324     {
 325         printf("criteria: mark = %s\n", $3);
 326         current_match.mark = $3;
 327     }
 328     | TOK_TITLE '=' STR
 329     {
 330         printf("criteria: title = %s\n", $3);
 331         current_match.title = $3;
 332     }
 333     ;
 334
 335 operations:
 336     operation
 337     | operations ',' operation
 338     ;
 339
 340 operation:
 341     exec
 342     | exit
 343     | restart
 344     | reload
 345     | border
 346     | layout
 347     | append_layout
 348     | move
 349     | workspace
 350     | focus
 351     | kill
 352     | open
 353     | fullscreen
 354     | split
 355     | floating
 356     | mark
 357     | resize
 358     | nop
 359     | mode
 360     ;
 361
 362 exec:
 363     TOK_EXEC STR
 364     {
 365         printf("should execute %s\n", $2);
 366         start_application($2);
 367         free($2);
 368     }
 369     ;
 370
 371 exit:
 372     TOK_EXIT
 373     {
 374         printf("exit, bye bye\n");
 375         exit(0);
 376     }
 377     ;
 378
 379 reload:
 380     TOK_RELOAD
 381     {
 382         printf("reloading\n");
 383         kill_configerror_nagbar(false);
 384         load_configuration(conn, NULL, true);
 385         x_set_i3_atoms();
 386         /* Send an IPC event just in case the ws names have changed */
 387         ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"reload\"}");
 388     }
 389     ;
 390
 391 restart:
 392     TOK_RESTART
 393     {
 394         printf("restarting i3\n");
 395         i3_restart(false);
 396     }
 397     ;
 398
 399 focus:
 400     TOK_FOCUS
 401     {
 402         owindow *current;
 403
 404         if (match_is_empty(&current_match)) {
 405             ELOG("You have to specify which window/container should be focused.\n");
 406             ELOG("Example: [class=\"urxvt\" title=\"irssi\"] focus\n");
 407
 408             asprintf(&json_output, "{\"success\":false, \"error\":\"You have to "
 409                      "specify which window/container should be focused\"}");
 410             break;
 411         }
 412
 413         int count = 0;
 414         TAILQ_FOREACH(current, &owindows, owindows) {
 415             LOG("focusing %p / %s\n", current->con, current->con->name);
 416             con_focus(current->con);
 417             count++;
 418         }
 419
 420         if (count > 1)
 421             LOG("WARNING: Your criteria for the focus command matches %d containers, "
 422                 "while only exactly one container can be focused at a time.\n", count);
 423
 424         tree_render();
 425     }
 426     | TOK_FOCUS direction
 427     {
 428         int direction = $2;
 429         switch (direction) {
 430             case TOK_LEFT:
 431                 LOG("Focusing left\n");
 432                 tree_next('p', HORIZ);
 433                 break;
 434             case TOK_RIGHT:
 435                 LOG("Focusing right\n");
 436                 tree_next('n', HORIZ);
 437                 break;
 438             case TOK_UP:
 439                 LOG("Focusing up\n");
 440                 tree_next('p', VERT);
 441                 break;
 442             case TOK_DOWN:
 443                 LOG("Focusing down\n");
 444                 tree_next('n', VERT);
 445                 break;
 446             default:
 447                 ELOG("Invalid focus direction (%d)\n", direction);
 448                 break;
 449         }
 450
 451         tree_render();
 452     }
 453     | TOK_FOCUS window_mode
 454     {
 455         printf("should focus: ");
 456
 457         if ($2 == TOK_TILING)
 458             printf("tiling\n");
 459         else if ($2 == TOK_FLOATING)
 460             printf("floating\n");
 461         else printf("mode toggle\n");
 462
 463         Con *ws = con_get_workspace(focused);
 464         Con *current;
 465         if (ws != NULL) {
 466             int to_focus = $2;
 467             if ($2 == TOK_MODE_TOGGLE) {
 468                 current = TAILQ_FIRST(&(ws->focus_head));
 469                 if (current->type == CT_FLOATING_CON)
 470                     to_focus = TOK_TILING;
 471                 else to_focus = TOK_FLOATING;
 472             }
 473             TAILQ_FOREACH(current, &(ws->focus_head), focused) {
 474                 if ((to_focus == TOK_FLOATING && current->type != CT_FLOATING_CON) ||
 475                     (to_focus == TOK_TILING && current->type == CT_FLOATING_CON))
 476                     continue;
 477
 478                 con_focus(con_descend_focused(current));
 479                 break;
 480             }
 481         }
 482
 483         tree_render();
 484     }
 485     | TOK_FOCUS level
 486     {
 487         if ($2 == TOK_PARENT)
 488             level_up();
 489         else level_down();
 490
 491         tree_render();
 492     }
 493     ;
 494
 495 window_mode:
 496     TOK_TILING        { $$ = TOK_TILING; }
 497     | TOK_FLOATING    { $$ = TOK_FLOATING; }
 498     | TOK_MODE_TOGGLE { $$ = TOK_MODE_TOGGLE; }
 499     ;
 500
 501 level:
 502     TOK_PARENT  { $$ = TOK_PARENT; }
 503     | TOK_CHILD { $$ = TOK_CHILD;  }
 504     ;
 505
 506 kill:
 507     TOK_KILL optional_kill_mode
 508     {
 509         owindow *current;
 510
 511         printf("killing!\n");
 512         /* check if the match is empty, not if the result is empty */
 513         if (match_is_empty(&current_match))
 514             tree_close_con($2);
 515         else {
 516             TAILQ_FOREACH(current, &owindows, owindows) {
 517                 printf("matching: %p / %s\n", current->con, current->con->name);
 518                 tree_close(current->con, $2, false);
 519             }
 520         }
 521
 522         tree_render();
 523     }
 524     ;
 525
 526 optional_kill_mode:
 527     /* empty */             { $$ = KILL_WINDOW; }
 528     | TOK_WINDOW { $$ = KILL_WINDOW; }
 529     | TOK_CLIENT { $$ = KILL_CLIENT; }
 530     ;
 531
 532 workspace:
 533     TOK_WORKSPACE TOK_NEXT
 534     {
 535         workspace_next();
 536         tree_render();
 537     }
 538     | TOK_WORKSPACE TOK_PREV
 539     {
 540         workspace_prev();
 541         tree_render();
 542     }
 543     | TOK_WORKSPACE STR
 544     {
 545         printf("should switch to workspace %s\n", $2);
 546         workspace_show($2);
 547         free($2);
 548
 549         tree_render();
 550     }
 551     ;
 552
 553 open:
 554     TOK_OPEN
 555     {
 556         printf("opening new container\n");
 557         Con *con = tree_open_con(NULL, NULL);
 558         con_focus(con);
 559         asprintf(&json_output, "{\"success\":true, \"id\":%ld}", (long int)con);
 560
 561         tree_render();
 562     }
 563     ;
 564
 565 fullscreen:
 566     TOK_FULLSCREEN fullscreen_mode
 567     {
 568         printf("toggling fullscreen, mode = %s\n", ($2 == CF_OUTPUT ? "normal" : "global"));
 569         owindow *current;
 570
 571         HANDLE_EMPTY_MATCH;
 572
 573         TAILQ_FOREACH(current, &owindows, owindows) {
 574             printf("matching: %p / %s\n", current->con, current->con->name);
 575             con_toggle_fullscreen(current->con, $2);
 576         }
 577
 578         tree_render();
 579     }
 580     ;
 581
 582 fullscreen_mode:
 583     /* empty */  { $$ = CF_OUTPUT; }
 584     | TOK_GLOBAL { $$ = CF_GLOBAL; }
 585     ;
 586
 587 split:
 588     TOK_SPLIT split_direction
 589     {
 590         /* TODO: use matches */
 591         printf("splitting in direction %c\n", $2);
 592         tree_split(focused, ($2 == 'v' ? VERT : HORIZ));
 593
 594         tree_render();
 595     }
 596     ;
 597
 598 split_direction:
 599     TOK_HORIZONTAL  { $$ = 'h'; }
 600     | 'h'           { $$ = 'h'; }
 601     | TOK_VERTICAL  { $$ = 'v'; }
 602     | 'v'           { $$ = 'v'; }
 603     ;
 604
 605 floating:
 606     TOK_FLOATING boolean
 607     {
 608         HANDLE_EMPTY_MATCH;
 609
 610         owindow *current;
 611         TAILQ_FOREACH(current, &owindows, owindows) {
 612             printf("matching: %p / %s\n", current->con, current->con->name);
 613             if ($2 == TOK_TOGGLE) {
 614                 printf("should toggle mode\n");
 615                 toggle_floating_mode(current->con, false);
 616             } else {
 617                 printf("should switch mode to %s\n", ($2 == TOK_FLOATING ? "floating" : "tiling"));
 618                 if ($2 == TOK_ENABLE) {
 619                     floating_enable(current->con, false);
 620                 } else {
 621                     floating_disable(current->con, false);
 622                 }
 623             }
 624         }
 625
 626         tree_render();
 627     }
 628     ;
 629
 630 boolean:
 631     TOK_ENABLE    { $$ = TOK_ENABLE; }
 632     | TOK_DISABLE { $$ = TOK_DISABLE; }
 633     | TOK_TOGGLE  { $$ = TOK_TOGGLE; }
 634     ;
 635
 636 border:
 637     TOK_BORDER border_style
 638     {
 639         printf("border style should be changed to %d\n", $2);
 640         owindow *current;
 641
 642         HANDLE_EMPTY_MATCH;
 643
 644         TAILQ_FOREACH(current, &owindows, owindows) {
 645             printf("matching: %p / %s\n", current->con, current->con->name);
 646             if ($2 == TOK_TOGGLE) {
 647                 current->con->border_style++;
 648                 current->con->border_style %= 3;
 649             } else current->con->border_style = $2;
 650         }
 651
 652         tree_render();
 653     }
 654     ;
 655
 656 border_style:
 657     TOK_NORMAL      { $$ = BS_NORMAL; }
 658     | TOK_NONE      { $$ = BS_NONE; }
 659     | TOK_1PIXEL    { $$ = BS_1PIXEL; }
 660     | TOK_TOGGLE    { $$ = TOK_TOGGLE; }
 661     ;
 662
 663 move:
 664     TOK_MOVE direction
 665     {
 666         printf("moving in direction %d\n", $2);
 667         tree_move($2);
 668
 669         tree_render();
 670     }
 671     | TOK_MOVE TOK_WORKSPACE STR
 672     {
 673         owindow *current;
 674
 675         printf("should move window to workspace %s\n", $3);
 676         /* get the workspace */
 677         Con *ws = workspace_get($3, NULL);
 678         free($3);
 679
 680         HANDLE_EMPTY_MATCH;
 681
 682         TAILQ_FOREACH(current, &owindows, owindows) {
 683             printf("matching: %p / %s\n", current->con, current->con->name);
 684             con_move_to_workspace(current->con, ws);
 685         }
 686
 687         tree_render();
 688     }
 689     ;
 690
 691 append_layout:
 692     TOK_APPEND_LAYOUT STR
 693     {
 694         printf("restoring \"%s\"\n", $2);
 695         tree_append_json($2);
 696         free($2);
 697         tree_render();
 698     }
 699     ;
 700
 701 layout:
 702     TOK_LAYOUT layout_mode
 703     {
 704         printf("changing layout to %d\n", $2);
 705         owindow *current;
 706
 707         /* check if the match is empty, not if the result is empty */
 708         if (match_is_empty(&current_match))
 709             con_set_layout(focused->parent, $2);
 710         else {
 711             TAILQ_FOREACH(current, &owindows, owindows) {
 712                 printf("matching: %p / %s\n", current->con, current->con->name);
 713                 con_set_layout(current->con, $2);
 714             }
 715         }
 716
 717         tree_render();
 718     }
 719     ;
 720
 721 layout_mode:
 722     TOK_DEFAULT   { $$ = L_DEFAULT; }
 723     | TOK_STACKED { $$ = L_STACKED; }
 724     | TOK_TABBED  { $$ = L_TABBED; }
 725     ;
 726
 727 mark:
 728     TOK_MARK STR
 729     {
 730         printf("marking window with str %s\n", $2);
 731         owindow *current;
 732
 733         HANDLE_EMPTY_MATCH;
 734
 735         TAILQ_FOREACH(current, &owindows, owindows) {
 736             printf("matching: %p / %s\n", current->con, current->con->name);
 737             current->con->mark = sstrdup($2);
 738         }
 739
 740         free($<string>2);
 741
 742         tree_render();
 743     }
 744     ;
 745
 746 nop:
 747     TOK_NOP STR
 748     {
 749         printf("-------------------------------------------------\n");
 750         printf("  NOP: %s\n", $2);
 751         printf("-------------------------------------------------\n");
 752         free($2);
 753     }
 754     ;
 755
 756 resize:
 757     TOK_RESIZE resize_way direction resize_px resize_tiling
 758     {
 759         /* resize <grow|shrink> <direction> [<px> px] [or <ppt> ppt] */
 760         printf("resizing in way %d, direction %d, px %d or ppt %d\n", $2, $3, $4, $5);
 761         int direction = $3;
 762         int px = $4;
 763         int ppt = $5;
 764         if ($2 == TOK_SHRINK) {
 765             px *= -1;
 766             ppt *= -1;
 767         }
 768
 769         if (con_is_floating(focused)) {
 770             printf("floating resize\n");
 771             if (direction == TOK_UP) {
 772                 focused->parent->rect.y -= px;
 773                 focused->parent->rect.height += px;
 774             } else if (direction == TOK_DOWN) {
 775                 focused->rect.height += px;
 776             } else if (direction == TOK_LEFT) {
 777                 focused->rect.x -= px;
 778                 focused->rect.width += px;
 779             } else {
 780                 focused->rect.width += px;
 781             }
 782         } else {
 783             LOG("tiling resize\n");
 784             /* get the default percentage */
 785             int children = con_num_children(focused->parent);
 786             Con *other;
 787             LOG("ins. %d children\n", children);
 788             double percentage = 1.0 / children;
 789             LOG("default percentage = %f\n", percentage);
 790
 791             if (direction == TOK_UP || direction == TOK_LEFT) {
 792                 other = TAILQ_PREV(focused, nodes_head, nodes);
 793             } else {
 794                 other = TAILQ_NEXT(focused, nodes);
 795             }
 796             if (other == TAILQ_END(workspaces)) {
 797                 LOG("No other container in this direction found, cannot resize.\n");
 798                 return 0;
 799             }
 800             LOG("other->percent = %f\n", other->percent);
 801             LOG("focused->percent before = %f\n", focused->percent);
 802             if (focused->percent == 0.0)
 803                 focused->percent = percentage;
 804             if (other->percent == 0.0)
 805                 other->percent = percentage;
 806             focused->percent += ((double)ppt / 100.0);
 807             other->percent -= ((double)ppt / 100.0);
 808             LOG("focused->percent after = %f\n", focused->percent);
 809             LOG("other->percent after = %f\n", other->percent);
 810         }
 811
 812         tree_render();
 813     }
 814     ;
 815
 816 resize_px:
 817     /* empty */
 818     {
 819         $$ = 10;
 820     }
 821     | NUMBER TOK_PX
 822     {
 823         $$ = $1;
 824     }
 825     ;
 826
 827 resize_tiling:
 828     /* empty */
 829     {
 830         $$ = 10;
 831     }
 832     | TOK_OR NUMBER TOK_PPT
 833     {
 834         $$ = $2;
 835     }
 836     ;
 837
 838 resize_way:
 839     TOK_GROW        { $$ = TOK_GROW; }
 840     | TOK_SHRINK    { $$ = TOK_SHRINK; }
 841     ;
 842
 843 direction:
 844     TOK_UP          { $$ = TOK_UP; }
 845     | TOK_DOWN      { $$ = TOK_DOWN; }
 846     | TOK_LEFT      { $$ = TOK_LEFT; }
 847     | TOK_RIGHT     { $$ = TOK_RIGHT; }
 848     ;
 849
 850 mode:
 851     TOK_MODE STR
 852     {
 853         switch_mode($2);
 854     }
 855     ;