git.sur5r.net Git - i3/i3/blob - src/assignments.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  * assignments.c: Assignments for specific windows (for_window).
   8  *
   9  */
  10 #include "all.h"
  11
  12 /*
  13  * Checks the list of assignments for the given window and runs all matching
  14  * ones (unless they have already been run for this specific window).
  15  *
  16  */
  17 void run_assignments(i3Window *window) {
  18     DLOG("Checking if any assignments match this window\n");
  19
  20     bool needs_tree_render = false;
  21
  22     /* Check if any assignments match */
  23     Assignment *current;
  24     TAILQ_FOREACH(current, &assignments, assignments) {
  25         if (!match_matches_window(&(current->match), window))
  26             continue;
  27
  28         bool skip = false;
  29         for (uint32_t c = 0; c < window->nr_assignments; c++) {
  30             if (window->ran_assignments[c] != current)
  31                 continue;
  32
  33             DLOG("This assignment already ran for the given window, not executing it again.\n");
  34             skip = true;
  35             break;
  36         }
  37
  38         if (skip)
  39             continue;
  40
  41         /* Store that we ran this assignment to not execute it again. We have
  42          * to do this before running the actual command to prevent infinite
  43          * loops. */
  44         window->nr_assignments++;
  45         window->ran_assignments = srealloc(window->ran_assignments, sizeof(Assignment *) * window->nr_assignments);
  46         window->ran_assignments[window->nr_assignments - 1] = current;
  47
  48         DLOG("matching assignment, would do:\n");
  49         if (current->type == A_COMMAND) {
  50             DLOG("execute command %s\n", current->dest.command);
  51             char *full_command;
  52             sasprintf(&full_command, "[id=\"%d\"] %s", window->id, current->dest.command);
  53             CommandResult *result = parse_command(full_command, NULL);
  54             free(full_command);
  55
  56             if (result->needs_tree_render)
  57                 needs_tree_render = true;
  58
  59             command_result_free(result);
  60         }
  61     }
  62
  63     /* If any of the commands required re-rendering, we will do that now. */
  64     if (needs_tree_render)
  65         tree_render();
  66 }
  67
  68 /*
  69  * Returns the first matching assignment for the given window.
  70  *
  71  */
  72 Assignment *assignment_for(i3Window *window, int type) {
  73     Assignment *assignment;
  74
  75     TAILQ_FOREACH(assignment, &assignments, assignments) {
  76         if ((type != A_ANY && (assignment->type & type) == 0) ||
  77             !match_matches_window(&(assignment->match), window))
  78             continue;
  79         DLOG("got a matching assignment\n");
  80         return assignment;
  81     }
  82
  83     return NULL;
  84 }