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

   1 #undef I3__FILE__
   2 #define I3__FILE__ "assignments.c"
   3 /*
   4  * vim:ts=4:sw=4:expandtab
   5  *
   6  * i3 - an improved dynamic tiling window manager
   7  * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
   8  *
   9  * assignments.c: Assignments for specific windows (for_window).
  10  *
  11  */
  12 #include "all.h"
  13
  14 /*
  15  * Checks the list of assignments for the given window and runs all matching
  16  * ones (unless they have already been run for this specific window).
  17  *
  18  */
  19 void run_assignments(i3Window *window) {
  20     DLOG("Checking if any assignments match this window\n");
  21
  22     bool needs_tree_render = false;
  23
  24     /* Check if any assignments match */
  25     Assignment *current;
  26     TAILQ_FOREACH(current, &assignments, assignments) {
  27         if (!match_matches_window(&(current->match), window))
  28             continue;
  29
  30         bool skip = false;
  31         for (uint32_t c = 0; c < window->nr_assignments; c++) {
  32             if (window->ran_assignments[c] != current)
  33                 continue;
  34
  35             DLOG("This assignment already ran for the given window, not executing it again.\n");
  36             skip = true;
  37             break;
  38         }
  39
  40         if (skip)
  41             continue;
  42
  43         /* Store that we ran this assignment to not execute it again. We have
  44          * to do this before running the actual command to prevent infinite
  45          * loops. */
  46         window->nr_assignments++;
  47         window->ran_assignments = srealloc(window->ran_assignments, sizeof(Assignment *) * window->nr_assignments);
  48         window->ran_assignments[window->nr_assignments - 1] = current;
  49
  50         DLOG("matching assignment, would do:\n");
  51         if (current->type == A_COMMAND) {
  52             DLOG("execute command %s\n", current->dest.command);
  53             char *full_command;
  54             sasprintf(&full_command, "[id=\"%d\"] %s", window->id, current->dest.command);
  55             CommandResult *result = parse_command(full_command, NULL);
  56             free(full_command);
  57
  58             if (result->needs_tree_render)
  59                 needs_tree_render = true;
  60
  61             command_result_free(result);
  62         }
  63     }
  64
  65     /* If any of the commands required re-rendering, we will do that now. */
  66     if (needs_tree_render)
  67         tree_render();
  68 }
  69
  70 /*
  71  * Returns the first matching assignment for the given window.
  72  *
  73  */
  74 Assignment *assignment_for(i3Window *window, int type) {
  75     Assignment *assignment;
  76
  77     TAILQ_FOREACH(assignment, &assignments, assignments) {
  78         if ((type != A_ANY && (assignment->type & type) == 0) ||
  79             !match_matches_window(&(assignment->match), window))
  80             continue;
  81         DLOG("got a matching assignment\n");
  82         return assignment;
  83     }
  84
  85     return NULL;
  86 }