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criteria: Add. Learn for_window command.

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A criteria is a string in the form of `[class="regex.*" title="str"]`.
It is stored in a struct with a list of *tokens* which is a
attribute/value pair (stored as a `crit_token` struct). Most tokens will
also have a precompiled regex stored that will be used during criteria
matching.

for_window command: When a new view is created its metadata is tested
against all stored criteria, and if a match is found the associated
command list is executed.

Unfortunately some metadata is not available in sway at the moment
(specifically `instance`, `window_role` and `urgent`). Any criteria
string that tries to match an unsupported attribute will fail.

(Note that while the criteria code can be used to parse any criteria
string it is currently only used by the `for_window` command.)
This commit is contained in:
S. Christoffer Eliesen 2015-11-17 19:27:01 +01:00
parent 402c9f4bf0
commit a06cb7cd01
7 changed files with 478 additions and 0 deletions
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16
sway/handlers.c
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@ -19,6 +19,7 @@
#include "input_state.h"
#include "resize.h"
#include "extensions.h"
#include "criteria.h"
// Event should be sent to client
#define EVENT_PASSTHROUGH false
@ -172,6 +173,21 @@ static bool handle_view_created(wlc_handle handle) {
set_focused_container(newview);
swayc_t *output = swayc_parent_by_type(newview, C_OUTPUT);
arrange_windows(output, -1, -1);
// check if it matches for_window in config and execute if so
list_t *criteria = criteria_for(newview);
for (int i = 0; i < criteria->length; i++) {
struct criteria *crit = criteria->items[i];
sway_log(L_DEBUG, "for_window '%s' matches new view %p, cmd: '%s'",
crit->crit_raw, newview, crit->cmdlist);
struct cmd_results *res = handle_command(crit->cmdlist);
if (res->status != CMD_SUCCESS) {
sway_log(L_ERROR, "Command '%s' failed: %s", res->input, res->error);
}
free_cmd_results(res);
// view must be focused for commands to affect it, so always
// refocus in-between command lists
set_focused_container(newview);
}
}
return true;
}