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

   1 /*
   2  * vim:ts=8:expandtab
   3  *
   4  * i3 - an improved dynamic tiling window manager
   5  *
   6  * © 2009 Michael Stapelberg and contributors
   7  *
   8  * See file LICENSE for license information.
   9  *
  10  */
  11 #include <stdbool.h>
  12 #include <stdio.h>
  13 #include <stdlib.h>
  14 #include <assert.h>
  15 #include <unistd.h>
  16 #include <string.h>
  17
  18 #include <xcb/xcb.h>
  19
  20 #include "util.h"
  21 #include "data.h"
  22 #include "table.h"
  23 #include "layout.h"
  24 #include "i3.h"
  25 #include "xinerama.h"
  26
  27 bool focus_window_in_container(xcb_connection_t *conn, Container *container, direction_t direction) {
  28         /* If this container is empty, we’re done */
  29         if (container->currently_focused == NULL)
  30                 return false;
  31
  32         /* Get the previous/next client or wrap around */
  33         Client *candidate = NULL;
  34         if (direction == D_UP) {
  35                 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  36                         candidate = CIRCLEQ_LAST(&(container->clients));
  37         }
  38         else if (direction == D_DOWN) {
  39                 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
  40                         candidate = CIRCLEQ_FIRST(&(container->clients));
  41         } else LOG("Direction not implemented!\n");
  42
  43         /* If we could not switch, the container contains exactly one client. We return false */
  44         if (candidate == container->currently_focused)
  45                 return false;
  46
  47         /* Set focus */
  48         set_focus(conn, candidate, true);
  49
  50         return true;
  51 }
  52
  53 typedef enum { THING_WINDOW, THING_CONTAINER } thing_t;
  54
  55 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
  56         LOG("focusing direction %d\n", direction);
  57
  58         int new_row = current_row,
  59             new_col = current_col;
  60
  61         Container *container = CUR_CELL;
  62         Workspace *t_ws = c_ws;
  63
  64         /* There always is a container. If not, current_col or current_row is wrong */
  65         assert(container != NULL);
  66
  67         if (container->workspace->fullscreen_client != NULL) {
  68                 LOG("You're in fullscreen mode. Won't switch focus\n");
  69                 return;
  70         }
  71
  72         /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
  73         if (direction == D_UP || direction == D_DOWN) {
  74                 if (thing == THING_WINDOW)
  75                         /* Let’s see if we can perform up/down focus in the current container */
  76                         if (focus_window_in_container(conn, container, direction))
  77                                 return;
  78
  79                 if (direction == D_DOWN && cell_exists(current_col, current_row+1))
  80                         new_row = current_row + t_ws->table[current_col][current_row]->rowspan;
  81                 else if (direction == D_UP && cell_exists(current_col, current_row-1)) {
  82                         /* Set new_row as a sane default, but it may get overwritten in a second */
  83                         new_row--;
  84
  85                         /* Search from the top to correctly handle rowspanned containers */
  86                         for (int rows = 0; rows < current_row; rows += t_ws->table[current_col][rows]->rowspan) {
  87                                 if (new_row > (rows + (t_ws->table[current_col][rows]->rowspan - 1)))
  88                                         continue;
  89
  90                                 new_row = rows;
  91                                 break;
  92                         }
  93                 } else {
  94                         /* Let’s see if there is a screen down/up there to which we can switch */
  95                         LOG("container is at %d with height %d\n", container->y, container->height);
  96                         i3Screen *screen;
  97                         int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
  98                         if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
  99                                 LOG("Wrapping screen around vertically\n");
 100                                 /* No screen found? Then wrap */
 101                                 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP));
 102                         }
 103                         t_ws = &(workspaces[screen->current_workspace]);
 104                         new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
 105                 }
 106         } else if (direction == D_LEFT || direction == D_RIGHT) {
 107                 if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
 108                         new_col = current_col + t_ws->table[current_col][current_row]->colspan;
 109                 else if (direction == D_LEFT && cell_exists(current_col-1, current_row)) {
 110                         /* Set new_col as a sane default, but it may get overwritten in a second */
 111                         new_col--;
 112
 113                         /* Search from the left to correctly handle colspanned containers */
 114                         for (int cols = 0; cols < current_col; cols += t_ws->table[cols][current_row]->colspan) {
 115                                 if (new_col > (cols + (t_ws->table[cols][current_row]->colspan - 1)))
 116                                         continue;
 117
 118                                 new_col = cols;
 119                                 break;
 120                         }
 121                 } else {
 122                         /* Let’s see if there is a screen left/right here to which we can switch */
 123                         LOG("container is at %d with width %d\n", container->x, container->width);
 124                         i3Screen *screen;
 125                         int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
 126                         if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
 127                                 LOG("Wrapping screen around horizontally\n");
 128                                 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT));
 129                         }
 130                         t_ws = &(workspaces[screen->current_workspace]);
 131                         new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
 132                 }
 133         } else {
 134                 LOG("direction unhandled\n");
 135                 return;
 136         }
 137
 138         /* Bounds checking */
 139         if (new_col >= t_ws->cols)
 140                 new_col = (t_ws->cols - 1);
 141         if (new_row >= t_ws->rows)
 142                 new_row = (t_ws->rows - 1);
 143
 144         if (t_ws->table[new_col][new_row]->currently_focused != NULL)
 145                 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused, true);
 146 }
 147
 148 /*
 149  * Tries to move the window inside its current container.
 150  *
 151  * Returns true if the window could be moved, false otherwise.
 152  *
 153  */
 154 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
 155                 direction_t direction) {
 156         assert(client->container != NULL);
 157
 158         Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
 159                                              CIRCLEQ_NEXT(client, clients));
 160
 161         if (other == CIRCLEQ_END(&(client->container->clients)))
 162                 return false;
 163
 164         LOG("i can do that\n");
 165         /* We can move the client inside its current container */
 166         CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
 167         if (direction == D_UP)
 168                 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
 169         else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
 170         render_layout(conn);
 171         return true;
 172 }
 173
 174 /*
 175  * Moves the current window or whole container to the given direction, creating a column/row if
 176  * necessary.
 177  *
 178  */
 179 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
 180         LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 181                                             (direction == D_LEFT ? "left" : "right"))));
 182         /* Get current window */
 183         Container *container = CUR_CELL,
 184                   *new = NULL;
 185
 186         /* There has to be a container, see focus_window() */
 187         assert(container != NULL);
 188
 189         /* If there is no window or the dock window is focused, we’re done */
 190         if (container->currently_focused == NULL ||
 191             container->currently_focused->dock)
 192                 return;
 193
 194         /* As soon as the client is moved away, the last focused client in the old
 195          * container needs to get focus, if any. Therefore, we save it here. */
 196         Client *current_client = container->currently_focused;
 197         Client *to_focus = get_last_focused_client(conn, container, current_client);
 198
 199         if (to_focus == NULL) {
 200                 to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 201                 if (to_focus == NULL)
 202                         to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 203         }
 204
 205         switch (direction) {
 206                 case D_LEFT:
 207                         /* If we’re at the left-most position, move the rest of the table right */
 208                         if (current_col == 0) {
 209                                 expand_table_cols_at_head(c_ws);
 210                                 new = CUR_CELL;
 211                         } else
 212                                 new = CUR_TABLE[--current_col][current_row];
 213                         break;
 214                 case D_RIGHT:
 215                         if (current_col == (c_ws->cols-1))
 216                                 expand_table_cols(c_ws);
 217
 218                         new = CUR_TABLE[++current_col][current_row];
 219                         break;
 220                 case D_UP:
 221                         if (move_current_window_in_container(conn, current_client, D_UP))
 222                                 return;
 223
 224                         /* if we’re at the up-most position, move the rest of the table down */
 225                         if (current_row == 0) {
 226                                 expand_table_rows_at_head(c_ws);
 227                                 new = CUR_CELL;
 228                         } else
 229                                 new = CUR_TABLE[current_col][--current_row];
 230                         break;
 231                 case D_DOWN:
 232                         if (move_current_window_in_container(conn, current_client, D_DOWN))
 233                                 return;
 234
 235                         if (current_row == (c_ws->rows-1))
 236                                 expand_table_rows(c_ws);
 237
 238                         new = CUR_TABLE[current_col][++current_row];
 239                         break;
 240         }
 241
 242         /* Remove it from the old container and put it into the new one */
 243         remove_client_from_container(conn, current_client, container);
 244
 245         if (new->currently_focused != NULL)
 246                 CIRCLEQ_INSERT_AFTER(&(new->clients), new->currently_focused, current_client, clients);
 247         else CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
 248         SLIST_INSERT_HEAD(&(new->workspace->focus_stack), current_client, focus_clients);
 249
 250         /* Update data structures */
 251         current_client->container = new;
 252         container->currently_focused = to_focus;
 253         new->currently_focused = current_client;
 254
 255         Workspace *workspace = container->workspace;
 256
 257         /* delete all empty columns/rows */
 258         cleanup_table(conn, workspace);
 259
 260         /* Fix colspan/rowspan if it’d overlap */
 261         fix_colrowspan(conn, workspace);
 262
 263         render_layout(conn);
 264
 265         set_focus(conn, current_client, true);
 266 }
 267
 268 static void move_current_container(xcb_connection_t *conn, direction_t direction) {
 269         LOG("moving container to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
 270                                             (direction == D_LEFT ? "left" : "right"))));
 271         /* Get current window */
 272         Container *container = CUR_CELL,
 273                   *new = NULL;
 274
 275         Container **old = &CUR_CELL;
 276
 277         /* There has to be a container, see focus_window() */
 278         assert(container != NULL);
 279
 280         switch (direction) {
 281                 case D_LEFT:
 282                         /* If we’re at the left-most position, move the rest of the table right */
 283                         if (current_col == 0) {
 284                                 expand_table_cols_at_head(c_ws);
 285                                 new = CUR_CELL;
 286                                 old = &CUR_TABLE[current_col+1][current_row];
 287                         } else
 288                                 new = CUR_TABLE[--current_col][current_row];
 289                         break;
 290                 case D_RIGHT:
 291                         if (current_col == (c_ws->cols-1))
 292                                 expand_table_cols(c_ws);
 293
 294                         new = CUR_TABLE[++current_col][current_row];
 295                         break;
 296                 case D_UP:
 297                         /* if we’re at the up-most position, move the rest of the table down */
 298                         if (current_row == 0) {
 299                                 expand_table_rows_at_head(c_ws);
 300                                 new = CUR_CELL;
 301                                 old = &CUR_TABLE[current_col][current_row+1];
 302                         } else
 303                                 new = CUR_TABLE[current_col][--current_row];
 304                         break;
 305                 case D_DOWN:
 306                         if (current_row == (c_ws->rows-1))
 307                                 expand_table_rows(c_ws);
 308
 309                         new = CUR_TABLE[current_col][++current_row];
 310                         break;
 311         }
 312
 313         LOG("old = %d,%d and new = %d,%d\n", container->col, container->row, new->col, new->row);
 314
 315         /* Swap the containers */
 316         int col = new->col;
 317         int row = new->row;
 318
 319         *old = new;
 320         new->col = container->col;
 321         new->row = container->row;
 322
 323         CUR_CELL = container;
 324         container->col = col;
 325         container->row = row;
 326
 327         Workspace *workspace = container->workspace;
 328
 329         /* delete all empty columns/rows */
 330         cleanup_table(conn, workspace);
 331
 332         /* Fix colspan/rowspan if it’d overlap */
 333         fix_colrowspan(conn, workspace);
 334
 335         render_layout(conn);
 336 }
 337
 338 /*
 339  * "Snaps" the current container (not possible for windows, because it works at table base)
 340  * to the given direction, that is, adjusts cellspan/rowspan
 341  *
 342  */
 343 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
 344         LOG("snapping container to direction %d\n", direction);
 345
 346         Container *container = CUR_CELL;
 347
 348         assert(container != NULL);
 349
 350         switch (direction) {
 351                 case D_LEFT:
 352                         /* Snap to the left is actually a move to the left and then a snap right */
 353                         if (!cell_exists(container->col - 1, container->row) ||
 354                                 CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
 355                                 LOG("cannot snap to left - the cell is already used\n");
 356                                 return;
 357                         }
 358
 359                         move_current_window(conn, D_LEFT);
 360                         snap_current_container(conn, D_RIGHT);
 361                         return;
 362                 case D_RIGHT: {
 363                         /* Check if the cell is used */
 364                         int new_col = container->col + container->colspan;
 365                         if (!cell_exists(new_col, container->row) ||
 366                                 CUR_TABLE[new_col][container->row]->currently_focused != NULL) {
 367                                 LOG("cannot snap to right - the cell is already used\n");
 368                                 return;
 369                         }
 370
 371                         /* Check if there are other cells with rowspan, which are in our way.
 372                          * If so, reduce their rowspan. */
 373                         for (int i = container->row-1; i >= 0; i--) {
 374                                 LOG("we got cell %d, %d with rowspan %d\n",
 375                                                 new_col, i, CUR_TABLE[new_col][i]->rowspan);
 376                                 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
 377                                         CUR_TABLE[new_col][i]->rowspan--;
 378                                 LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
 379                         }
 380
 381                         container->colspan++;
 382                         break;
 383                 }
 384                 case D_UP:
 385                         if (!cell_exists(container->col, container->row - 1) ||
 386                                 CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
 387                                 LOG("cannot snap to top - the cell is already used\n");
 388                                 return;
 389                         }
 390
 391                         move_current_window(conn, D_UP);
 392                         snap_current_container(conn, D_DOWN);
 393                         return;
 394                 case D_DOWN: {
 395                         LOG("snapping down\n");
 396                         int new_row = container->row + container->rowspan;
 397                         if (!cell_exists(container->col, new_row) ||
 398                                 CUR_TABLE[container->col][new_row]->currently_focused != NULL) {
 399                                 LOG("cannot snap down - the cell is already used\n");
 400                                 return;
 401                         }
 402
 403                         for (int i = container->col-1; i >= 0; i--) {
 404                                 LOG("we got cell %d, %d with colspan %d\n",
 405                                                 i, new_row, CUR_TABLE[i][new_row]->colspan);
 406                                 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
 407                                         CUR_TABLE[i][new_row]->colspan--;
 408                                 LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
 409
 410                         }
 411
 412                         container->rowspan++;
 413                         break;
 414                 }
 415         }
 416
 417         render_layout(conn);
 418 }
 419
 420 /*
 421  * Moves the currently selected window to the given workspace
 422  *
 423  */
 424 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
 425         LOG("Moving current window to workspace %d\n", workspace);
 426
 427         Container *container = CUR_CELL;
 428
 429         assert(container != NULL);
 430
 431         /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
 432         Workspace *t_ws = &(workspaces[workspace-1]);
 433
 434         Client *current_client = container->currently_focused;
 435         if (current_client == NULL) {
 436                 LOG("No currently focused client in current container.\n");
 437                 return;
 438         }
 439         Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
 440         if (to_focus == NULL)
 441                 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
 442
 443         if (t_ws->screen == NULL) {
 444                 LOG("initializing new workspace, setting num to %d\n", workspace-1);
 445                 t_ws->screen = container->workspace->screen;
 446                 /* Copy the dimensions from the virtual screen */
 447                 memcpy(&(t_ws->rect), &(container->workspace->screen->rect), sizeof(Rect));
 448         } else {
 449                 /* Check if there is already a fullscreen client on the destination workspace and
 450                  * stop moving if so. */
 451                 if (current_client->fullscreen && (t_ws->fullscreen_client != NULL)) {
 452                         LOG("Not moving: Fullscreen client already existing on destination workspace.\n");
 453                         return;
 454                 }
 455         }
 456
 457         Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
 458
 459         assert(to_container != NULL);
 460
 461         remove_client_from_container(conn, current_client, container);
 462         if (container->workspace->fullscreen_client == current_client)
 463                 container->workspace->fullscreen_client = NULL;
 464
 465         CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
 466         SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
 467         if (current_client->fullscreen)
 468                 t_ws->fullscreen_client = current_client;
 469         LOG("Moved.\n");
 470
 471         current_client->container = to_container;
 472         container->currently_focused = to_focus;
 473         to_container->currently_focused = current_client;
 474
 475         /* If we’re moving it to an invisible screen, we need to unmap it */
 476         if (to_container->workspace->screen->current_workspace != to_container->workspace->num) {
 477                 LOG("This workspace is not visible, unmapping\n");
 478                 xcb_unmap_window(conn, current_client->frame);
 479         }
 480
 481         /* delete all empty columns/rows */
 482         cleanup_table(conn, container->workspace);
 483
 484         render_layout(conn);
 485 }
 486
 487 /*
 488  * Switches to the given workspace
 489  *
 490  */
 491 void show_workspace(xcb_connection_t *conn, int workspace) {
 492         Client *client;
 493         bool need_warp = false;
 494         xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
 495         /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
 496         Workspace *t_ws = &(workspaces[workspace-1]);
 497
 498         LOG("show_workspace(%d)\n", workspace);
 499
 500         /* Store current_row/current_col */
 501         c_ws->current_row = current_row;
 502         c_ws->current_col = current_col;
 503
 504         /* Check if the workspace has not been used yet */
 505         if (t_ws->screen == NULL) {
 506                 LOG("initializing new workspace, setting num to %d\n", workspace);
 507                 t_ws->screen = c_ws->screen;
 508                 /* Copy the dimensions from the virtual screen */
 509                 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
 510         }
 511
 512         if (c_ws->screen != t_ws->screen) {
 513                 /* We need to switch to the other screen first */
 514                 LOG("moving over to other screen.\n");
 515
 516                 /* Store the old client */
 517                 Client *old_client = CUR_CELL->currently_focused;
 518
 519                 c_ws = &(workspaces[t_ws->screen->current_workspace]);
 520                 current_col = c_ws->current_col;
 521                 current_row = c_ws->current_row;
 522                 if (CUR_CELL->currently_focused != NULL)
 523                         need_warp = true;
 524                 else {
 525                         Rect *dims = &(c_ws->screen->rect);
 526                         xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
 527                                          dims->x + (dims->width / 2), dims->y + (dims->height / 2));
 528                 }
 529
 530                 /* Re-decorate the old client, it’s not focused anymore */
 531                 if ((old_client != NULL) && !old_client->dock)
 532                         redecorate_window(conn, old_client);
 533                 else xcb_flush(conn);
 534         }
 535
 536         /* Check if we need to change something or if we’re already there */
 537         if (c_ws->screen->current_workspace == (workspace-1)) {
 538                 if (CUR_CELL->currently_focused != NULL) {
 539                         set_focus(conn, CUR_CELL->currently_focused, true);
 540                         if (need_warp) {
 541                                 warp_pointer_into(conn, CUR_CELL->currently_focused);
 542                                 xcb_flush(conn);
 543                         }
 544                 }
 545                 return;
 546         }
 547
 548         t_ws->screen->current_workspace = workspace-1;
 549
 550         /* Unmap all clients of the current workspace */
 551         unmap_workspace(conn, c_ws);
 552
 553         c_ws = &workspaces[workspace-1];
 554         current_row = c_ws->current_row;
 555         current_col = c_ws->current_col;
 556         LOG("new current row = %d, current col = %d\n", current_row, current_col);
 557
 558         ignore_enter_notify_forall(conn, c_ws, true);
 559
 560         /* Map all clients on the new workspace */
 561         FOR_TABLE(c_ws)
 562                 CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
 563                         xcb_map_window(conn, client->frame);
 564
 565         /* Map all stack windows, if any */
 566         struct Stack_Window *stack_win;
 567         SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
 568                 if (stack_win->container->workspace == c_ws)
 569                         xcb_map_window(conn, stack_win->window);
 570
 571         ignore_enter_notify_forall(conn, c_ws, false);
 572
 573         /* Restore focus on the new workspace */
 574         if (CUR_CELL->currently_focused != NULL) {
 575                 set_focus(conn, CUR_CELL->currently_focused, true);
 576                 if (need_warp) {
 577                         warp_pointer_into(conn, CUR_CELL->currently_focused);
 578                         xcb_flush(conn);
 579                 }
 580         } else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 581
 582         render_layout(conn);
 583 }
 584
 585 /*
 586  * Parses a command, see file CMDMODE for more information
 587  *
 588  */
 589 void parse_command(xcb_connection_t *conn, const char *command) {
 590         LOG("--- parsing command \"%s\" ---\n", command);
 591         /* Hmm, just to be sure */
 592         if (command[0] == '\0')
 593                 return;
 594
 595         /* Is it an <exec>? Then execute the given command. */
 596         if (STARTS_WITH(command, "exec ")) {
 597                 LOG("starting \"%s\"\n", command + strlen("exec "));
 598                 start_application(command+strlen("exec "));
 599                 return;
 600         }
 601
 602         /* Is it an <exit>? */
 603         if (STARTS_WITH(command, "exit")) {
 604                 LOG("User issued exit-command, exiting without error.\n");
 605                 exit(EXIT_SUCCESS);
 606         }
 607
 608         /* Is it <restart>? Then restart in place. */
 609         if (STARTS_WITH(command, "restart")) {
 610                 LOG("restarting \"%s\"...\n", start_argv[0]);
 611                 execvp(start_argv[0], start_argv);
 612                 /* not reached */
 613         }
 614
 615         if (STARTS_WITH(command, "kill")) {
 616                 if (CUR_CELL->currently_focused == NULL) {
 617                         LOG("There is no window to kill\n");
 618                         return;
 619                 }
 620
 621                 LOG("Killing current window\n");
 622                 kill_window(conn, CUR_CELL->currently_focused);
 623                 return;
 624         }
 625
 626         /* Is it 'f' for fullscreen? */
 627         if (command[0] == 'f') {
 628                 if (CUR_CELL->currently_focused == NULL)
 629                         return;
 630                 toggle_fullscreen(conn, CUR_CELL->currently_focused);
 631                 return;
 632         }
 633
 634         /* Is it just 's' for stacking or 'd' for default? */
 635         if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) {
 636                 LOG("Switching mode for current container\n");
 637                 switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT));
 638                 return;
 639         }
 640
 641         enum { WITH_WINDOW, WITH_CONTAINER } with = WITH_WINDOW;
 642
 643         /* Is it a <with>? */
 644         if (command[0] == 'w') {
 645                 command++;
 646                 /* TODO: implement */
 647                 if (command[0] == 'c') {
 648                         with = WITH_CONTAINER;
 649                         command++;
 650                 } else {
 651                         LOG("not yet implemented.\n");
 652                         return;
 653                 }
 654         }
 655
 656         /* It's a normal <cmd> */
 657         char *rest = NULL;
 658         enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
 659         direction_t direction;
 660         int times = strtol(command, &rest, 10);
 661         if (rest == NULL) {
 662                 LOG("Invalid command (\"%s\")\n", command);
 663                 return;
 664         }
 665
 666         if (*rest == '\0') {
 667                 /* No rest? This was a tag number, not a times specification */
 668                 show_workspace(conn, times);
 669                 return;
 670         }
 671
 672         if (*rest == 'm' || *rest == 's') {
 673                 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
 674                 rest++;
 675         }
 676
 677         int workspace = strtol(rest, &rest, 10);
 678
 679         if (rest == NULL) {
 680                 LOG("Invalid command (\"%s\")\n", command);
 681                 return;
 682         }
 683
 684         if (*rest == '\0') {
 685                 move_current_window_to_workspace(conn, workspace);
 686                 return;
 687         }
 688
 689         /* Now perform action to <where> */
 690         while (*rest != '\0') {
 691                 if (*rest == 'h')
 692                         direction = D_LEFT;
 693                 else if (*rest == 'j')
 694                         direction = D_DOWN;
 695                 else if (*rest == 'k')
 696                         direction = D_UP;
 697                 else if (*rest == 'l')
 698                         direction = D_RIGHT;
 699                 else {
 700                         LOG("unknown direction: %c\n", *rest);
 701                         return;
 702                 }
 703
 704                 if (action == ACTION_FOCUS)
 705                         focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
 706                 else if (action == ACTION_MOVE) {
 707                         if (with == WITH_WINDOW)
 708                                 move_current_window(conn, direction);
 709                         else move_current_container(conn, direction);
 710                 }
 711                 else if (action == ACTION_SNAP)
 712                         snap_current_container(conn, direction);
 713
 714                 rest++;
 715         }
 716
 717         LOG("--- done ---\n");
 718 }