i3-compat: add GET_BINDING_STATE IPC command

3 files changed, 37 insertions, 0 deletions

diff --git a/sway/ipc-json.c b/sway/ipc-json.c
index 066fd8db..70b81ad1 100644
--- a/sway/ipc-json.c
+++ b/sway/ipc-json.c
@@ -1261,3 +1261,10 @@ json_object *ipc_json_describe_bar_config(struct bar_config *bar) {
 #endif
         return json;
 }
+
+json_object *ipc_json_get_binding_mode(void) {
+        json_object *current_mode = json_object_new_object();
+        json_object_object_add(current_mode, "name",
+                        json_object_new_string(config->current_mode->name));
+        return current_mode;
+}
diff --git a/sway/ipc-server.c b/sway/ipc-server.c
index bd9f40bc..62bdccb8 100644
--- a/sway/ipc-server.c
+++ b/sway/ipc-server.c
@@ -876,6 +876,16 @@ void ipc_client_handle_command(struct ipc_client *client, uint32_t payload_lengt
                 goto exit_cleanup;
         }
 
+        case IPC_GET_BINDING_STATE:
+        {
+                json_object *current_mode = ipc_json_get_binding_mode();
+                const char *json_string = json_object_to_json_string(current_mode);
+                ipc_send_reply(client, payload_type, json_string,
+                        (uint32_t)strlen(json_string));
+                json_object_put(current_mode); // free
+                goto exit_cleanup;
+        }
+
         case IPC_GET_CONFIG:
         {
                 json_object *json = json_object_new_object();
diff --git a/sway/sway-ipc.7.scd b/sway/sway-ipc.7.scd
index 63e3ceb6..495e2e7d 100644
--- a/sway/sway-ipc.7.scd
+++ b/sway/sway-ipc.7.scd
@@ -75,6 +75,9 @@ supported. *For all replies, any properties not listed are subject to removal.*
 |- 11
 :  SYNC
 :  Replies failure object for i3 compatibility
+|- 12
+:  GET_BINDING_STATE
+:  Request the current binding state, e.g. the currently active binding mode name.
 |- 100
 :  GET_INPUTS
 :  Get the list of input devices
@@ -1067,6 +1070,23 @@ boolean value _false_.
 }
 ```
 
+## 12. GET_BINDING_STATE
+
+*MESSAGE*++
+Returns the currently active binding mode.
+
+*REPLY*++
+A single object that contains the property _name_, which is set to the
+currently active binding mode as a string.
+
+*Exact Reply:*
+```
+{
+        "name": "default"
+}
+```
+
+
 ## 100. GET_INPUTS
 
 *MESSAGE*++