ipc: add binding event

include/sway/config.h

@@ -488,8 +488,6 @@ int sway_binding_cmp_keys(const void *a, const void *b);
 
 void free_sway_binding(struct sway_binding *sb);
 
-struct sway_binding *sway_binding_dup(struct sway_binding *sb);
-
 void seat_execute_command(struct sway_seat *seat, struct sway_binding *binding);
 
 void load_swaybars();

include/sway/ipc-server.h

@@ -17,5 +17,6 @@ void ipc_event_window(struct sway_container *window, const char *change);
 void ipc_event_barconfig_update(struct bar_config *bar);
 void ipc_event_mode(const char *mode, bool pango);
 void ipc_event_shutdown(const char *reason);
+void ipc_event_binding(struct sway_binding *binding);
 
 #endif

sway/commands/bind.c

@@ -1,3 +1,4 @@
+#define _XOPEN_SOURCE 500
 #ifdef __linux__
 #include <linux/input-event-codes.h>
 #elif __FreeBSD__
@@ -5,9 +6,11 @@
 #endif
 #include <xkbcommon/xkbcommon.h>
 #include <xkbcommon/xkbcommon-names.h>
+#include <string.h>
 #include <strings.h>
 #include "sway/commands.h"
 #include "sway/config.h"
+#include "sway/ipc-server.h"
 #include "list.h"
 #include "log.h"
 #include "stringop.h"
@@ -27,6 +30,33 @@ void free_sway_binding(struct sway_binding *binding) {
 	free(binding);
 }
 
+static struct sway_binding *sway_binding_dup(struct sway_binding *sb) {
+	struct sway_binding *new_sb = calloc(1, sizeof(struct sway_binding));
+	if (!new_sb) {
+		return NULL;
+	}
+
+	new_sb->type = sb->type;
+	new_sb->order = sb->order;
+	new_sb->flags = sb->flags;
+	new_sb->modifiers = sb->modifiers;
+	new_sb->command = strdup(sb->command);
+
+	new_sb->keys = create_list();
+	int i;
+	for (i = 0; i < sb->keys->length; ++i) {
+		xkb_keysym_t *key = malloc(sizeof(xkb_keysym_t));
+		if (!key) {
+			free_sway_binding(new_sb);
+			return NULL;
+		}
+		*key = *(xkb_keysym_t *)sb->keys->items[i];
+		list_add(new_sb->keys, key);
+	}
+
+	return new_sb;
+}
+
 /**
  * Returns true if the bindings have the same key and modifier combinations.
  * Note that keyboard layout is not considered, so the bindings might actually
@@ -275,11 +305,31 @@ struct cmd_results *cmd_bindcode(int argc, char **argv) {
 void seat_execute_command(struct sway_seat *seat, struct sway_binding *binding) {
 	wlr_log(WLR_DEBUG, "running command for binding: %s",
 		binding->command);
+
+	struct sway_binding *binding_copy = binding;
+	bool reload = false;
+	// if this is a reload command we need to make a duplicate of the
+	// binding since it will be gone after the reload has completed.
+	if (strcasecmp(binding->command, "reload") == 0) {
+		reload = true;
+		binding_copy = sway_binding_dup(binding);
+		if (!binding_copy) {
+			wlr_log(WLR_ERROR, "Failed to duplicate binding during reload");
+			return;
+		}
+	}
+
 	config->handler_context.seat = seat;
 	struct cmd_results *results = execute_command(binding->command, NULL);
-	if (results->status != CMD_SUCCESS) {
+	if (results->status == CMD_SUCCESS) {
+		ipc_event_binding(binding_copy);
+	} else {
 		wlr_log(WLR_DEBUG, "could not run command for binding: %s (%s)",
 			binding->command, results->error);
 	}
+
+	if (reload) { // free the binding if we made a copy
+		free_sway_binding(binding_copy);
+	}
 	free_cmd_results(results);
 }

sway/ipc-server.c

@@ -3,12 +3,18 @@
 // Any value will hide SOCK_CLOEXEC on FreeBSD (__BSD_VISIBLE=0)
 #define _XOPEN_SOURCE 700
 #endif
+#ifdef __linux__
+#include <linux/input-event-codes.h>
+#elif __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#endif
 #include <assert.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <json-c/json.h>
 #include <stdbool.h>
 #include <stdint.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
@@ -28,6 +34,7 @@
 #include "sway/tree/view.h"
 #include "list.h"
 #include "log.h"
+#include "util.h"
 
 static int ipc_socket = -1;
 static struct wl_event_source *ipc_event_source =  NULL;
@@ -367,6 +374,75 @@ void ipc_event_shutdown(const char *reason) {
 	json_object_put(json);
 }
 
+void ipc_event_binding(struct sway_binding *binding) {
+	if (!ipc_has_event_listeners(IPC_EVENT_BINDING)) {
+		return;
+	}
+	wlr_log(WLR_DEBUG, "Sending binding event");
+
+	json_object *json_binding = json_object_new_object();
+	json_object_object_add(json_binding, "command", json_object_new_string(binding->command));
+
+	const char *names[10];
+	int len = get_modifier_names(names, binding->modifiers);
+	json_object *modifiers = json_object_new_array();
+	for (int i = 0; i < len; ++i) {
+		json_object_array_add(modifiers, json_object_new_string(names[i]));
+	}
+	json_object_object_add(json_binding, "event_state_mask", modifiers);
+
+	json_object *input_codes = json_object_new_array();
+	int input_code = 0;
+	json_object *symbols = json_object_new_array();
+	json_object *symbol = NULL;
+
+	if (binding->type == BINDING_KEYCODE) { // bindcode: populate input_codes
+		uint32_t keycode;
+		for (int i = 0; i < binding->keys->length; ++i) {
+			keycode = *(uint32_t *)binding->keys->items[i];
+			json_object_array_add(input_codes, json_object_new_int(keycode));
+			if (i == 0) {
+				input_code = keycode;
+			}
+		}
+	} else { // bindsym/mouse: populate symbols
+		uint32_t keysym;
+		char buffer[64];
+		for (int i = 0; i < binding->keys->length; ++i) {
+			keysym = *(uint32_t *)binding->keys->items[i];
+			if (keysym >= BTN_LEFT && keysym <= BTN_LEFT + 8) {
+				snprintf(buffer, 64, "button%u", keysym - BTN_LEFT + 1);
+			} else if (xkb_keysym_get_name(keysym, buffer, 64) < 0) {
+				continue;
+			}
+
+			json_object *str = json_object_new_string(buffer);
+			if (i == 0) {
+				// str is owned by both symbol and symbols. Make sure
+				// to bump the ref count.
+				json_object_array_add(symbols, json_object_get(str));
+				symbol = str;
+			} else {
+				json_object_array_add(symbols, str);
+			}
+		}
+	}
+
+	json_object_object_add(json_binding, "input_codes", input_codes);
+	json_object_object_add(json_binding, "input_code", json_object_new_int(input_code));
+	json_object_object_add(json_binding, "symbols", symbols);
+	json_object_object_add(json_binding, "symbol", symbol);
+	json_object_object_add(json_binding, "input_type", binding->type == BINDING_MOUSE ?
+			json_object_new_string("mouse") : json_object_new_string("keyboard"));
+
+	json_object *json = json_object_new_object();
+	json_object_object_add(json, "change", json_object_new_string("run"));
+	json_object_object_add(json, "binding", json_binding);
+	const char *json_string = json_object_to_json_string(json);
+	ipc_send_event(json_string, IPC_EVENT_BINDING);
+	json_object_put(json);
+}
+
 int ipc_client_handle_writable(int client_fd, uint32_t mask, void *data) {
 	struct ipc_client *client = data;