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 (current->type != A_COMMAND || !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, execute command %s\n", current->dest.command);
  49         char *full_command;
  50         sasprintf(&full_command, "[id=\"%d\"] %s", window->id, current->dest.command);
  51         CommandResult *result = parse_command(full_command, NULL);
  52         free(full_command);
  53
  54         if (result->needs_tree_render)
  55             needs_tree_render = true;
  56
  57         command_result_free(result);
  58     }
  59
  60     /* If any of the commands required re-rendering, we will do that now. */
  61     if (needs_tree_render)
  62         tree_render();
  63 }
  64
  65 /*
  66  * Returns the first matching assignment for the given window.
  67  *
  68  */
  69 Assignment *assignment_for(i3Window *window, int type) {
  70     Assignment *assignment;
  71
  72     TAILQ_FOREACH(assignment, &assignments, assignments) {
  73         if ((type != A_ANY && (assignment->type & type) == 0) ||
  74             !match_matches_window(&(assignment->match), window))
  75             continue;
  76         DLOG("got a matching assignment\n");
  77         return assignment;
  78     }
  79
  80     return NULL;
  81 }