i3
assignments.c
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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 */
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;
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, 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)
63}
64
65/*
66 * Returns the first matching assignment for the given window.
67 *
68 */
69Assignment *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}
struct assignments_head assignments
Definition main.c:97
void tree_render(void)
Renders the tree, that is rendering all outputs using render_con() and pushing the changes to X11 usi...
Definition tree.c:451
bool match_matches_window(Match *match, i3Window *window)
Check if a match data structure matches the given window.
Definition match.c:90
CommandResult * parse_command(const char *input, yajl_gen gen, ipc_client *client)
Parses and executes the given command.
void command_result_free(CommandResult *result)
Frees a CommandResult.
void run_assignments(i3Window *window)
Checks the list of assignments for the given window and runs all matching ones (unless they have alre...
Definition assignments.c:17
Assignment * assignment_for(i3Window *window, int type)
Returns the first matching assignment for the given window.
Definition assignments.c:69
#define TAILQ_FOREACH(var, head, field)
Definition queue.h:347
#define DLOG(fmt,...)
Definition libi3.h:105
int sasprintf(char **strp, const char *fmt,...)
Safe-wrapper around asprintf which exits if it returns -1 (meaning that there is no more memory avail...
void * srealloc(void *ptr, size_t size)
Safe-wrapper around realloc which exits if realloc returns NULL (meaning that there is no more memory...
A struct that contains useful information about the result of a command as a whole (e....
A 'Window' is a type which contains an xcb_window_t and all the related information (hints like _NET_...
Definition data.h:428
xcb_window_t id
Definition data.h:429
Assignment ** ran_assignments
Definition data.h:439
uint32_t nr_assignments
Pointers to the Assignments which were already ran for this Window (assignments run only once)
Definition data.h:438
An Assignment makes specific windows go to a specific workspace/output or run a command for that wind...
Definition data.h:598
Match match
the criteria to check if a window matches
Definition data.h:620
union Assignment::@17 dest
destination workspace/command/output, depending on the type
char * command
Definition data.h:624
enum Assignment::@16 type
type of this assignment: