2 * vim:ts=4:sw=4:expandtab
4 * i3bar - an xcb-based status- and ws-bar for i3
5 * © 2010 Axel Wagner and contributors (see also: LICENSE)
7 * mode.c: Handle mode event and show current binding mode in the bar
14 #include <yajl/yajl_parse.h>
15 #include <yajl/yajl_version.h>
19 /* A datatype to pass through the callbacks to save the state */
20 struct mode_json_params {
29 * Parse a string (change)
32 static int mode_string_cb(void *params_, const unsigned char *val, size_t len) {
33 struct mode_json_params *params = (struct mode_json_params *)params_;
35 if (!strcmp(params->cur_key, "change")) {
36 sasprintf(&(params->name), "%.*s", len, val);
37 FREE(params->cur_key);
41 FREE(params->cur_key);
49 static int mode_boolean_cb(void *params_, int val) {
50 struct mode_json_params *params = (struct mode_json_params *)params_;
52 if (strcmp(params->cur_key, "pango_markup") == 0) {
53 DLOG("Setting pango_markup to %d.\n", val);
54 params->pango_markup = val;
56 FREE(params->cur_key);
60 FREE(params->cur_key);
67 * Essentially we just save it in the parsing state
70 static int mode_map_key_cb(void *params_, const unsigned char *keyVal, size_t keyLen) {
71 struct mode_json_params *params = (struct mode_json_params *)params_;
72 FREE(params->cur_key);
73 sasprintf(&(params->cur_key), "%.*s", keyLen, keyVal);
77 static int mode_end_map_cb(void *params_) {
78 struct mode_json_params *params = (struct mode_json_params *)params_;
81 params->mode->name = i3string_from_utf8(params->name);
82 i3string_set_markup(params->mode->name, params->pango_markup);
83 /* Save its rendered width */
84 params->mode->width = predict_text_width(params->mode->name);
86 DLOG("Got mode change: %s\n", i3string_as_utf8(params->mode->name));
87 FREE(params->cur_key);
92 /* A datastructure to pass all these callbacks to yajl */
93 static yajl_callbacks mode_callbacks = {
94 .yajl_string = mode_string_cb,
95 .yajl_boolean = mode_boolean_cb,
96 .yajl_map_key = mode_map_key_cb,
97 .yajl_end_map = mode_end_map_cb,
101 * Start parsing the received JSON string
104 void parse_mode_json(char *json) {
105 /* FIXME: Fasciliate stream processing, i.e. allow starting to interpret
107 struct mode_json_params params;
111 params.cur_key = NULL;
113 params.mode = &binding;
118 handle = yajl_alloc(&mode_callbacks, NULL, (void *)¶ms);
120 state = yajl_parse(handle, (const unsigned char *)json, strlen(json));
122 /* FIXME: Propper error handling for JSON parsing */
126 case yajl_status_client_canceled:
127 case yajl_status_error:
128 ELOG("Could not parse mode event!\n");
133 /* We don't want to indicate default binding mode */
134 if (strcmp("default", i3string_as_utf8(params.mode->name)) == 0)
135 I3STRING_FREE(params.mode->name);
137 /* Set the new binding mode */
138 set_current_mode(&binding);
142 FREE(params.cur_key);