Introduced a new GET_BINDING_MODES message type and reply. (#2376)

This type dumps all currently configured binding modes.

fixes #2375

docs/ipc

@@ -80,6 +80,8 @@ GET_BAR_CONFIG (6)::
 GET_VERSION (7)::
 	Gets the version of i3. The reply will be a JSON-encoded dictionary
 	with the major, minor, patch and human-readable version.
+GET_BINDING_MODES (8)::
+        Gets a list of currently configured binding modes.
 
 So, a typical message could look like this:
 --------------------------------------------------
@@ -137,6 +139,8 @@ BAR_CONFIG (6)::
 	Reply to the GET_BAR_CONFIG message.
 VERSION (7)::
 	Reply to the GET_VERSION message.
+BINDING_MODES (8)::
+        Reply to the GET_BINDING_MODES message.
 
 === COMMAND reply
 
@@ -604,6 +608,15 @@ loaded_config_file_name (string)::
 }
 -------------------
 
+=== BINDING_MODES reply
+
+The reply consists of an array of all currently configured binding modes.
+
+*Example:*
+---------------------
+["default", "resize"]
+---------------------
+
 == Events
 
 [[events]]

i3-msg/main.c

@@ -161,11 +161,13 @@ int main(int argc, char *argv[]) {
                 message_type = I3_IPC_MESSAGE_TYPE_GET_MARKS;
             else if (strcasecmp(optarg, "get_bar_config") == 0)
                 message_type = I3_IPC_MESSAGE_TYPE_GET_BAR_CONFIG;
+            else if (strcasecmp(optarg, "get_binding_modes") == 0)
+                message_type = I3_IPC_MESSAGE_TYPE_GET_BINDING_MODES;
             else if (strcasecmp(optarg, "get_version") == 0)
                 message_type = I3_IPC_MESSAGE_TYPE_GET_VERSION;
             else {
                 printf("Unknown message type\n");
-                printf("Known types: command, get_workspaces, get_outputs, get_tree, get_marks, get_bar_config, get_version\n");
+                printf("Known types: command, get_workspaces, get_outputs, get_tree, get_marks, get_bar_config, get_binding_modes, get_version\n");
                 exit(EXIT_FAILURE);
             }
         } else if (o == 'q') {

include/i3/ipc.h

@@ -51,34 +51,22 @@ typedef struct i3_ipc_header {
 /** Request the i3 version */
 #define I3_IPC_MESSAGE_TYPE_GET_VERSION 7
 
+/** Request a list of configured binding modes. */
+#define I3_IPC_MESSAGE_TYPE_GET_BINDING_MODES 8
+
 /*
  * Messages from i3 to clients
  *
  */
-
-/** Command reply type */
 #define I3_IPC_REPLY_TYPE_COMMAND 0
-
-/** Workspaces reply type */
 #define I3_IPC_REPLY_TYPE_WORKSPACES 1
-
-/** Subscription reply type */
 #define I3_IPC_REPLY_TYPE_SUBSCRIBE 2
-
-/** Outputs reply type */
 #define I3_IPC_REPLY_TYPE_OUTPUTS 3
-
-/** Tree reply type */
 #define I3_IPC_REPLY_TYPE_TREE 4
-
-/** Marks reply type */
 #define I3_IPC_REPLY_TYPE_MARKS 5
-
-/** Bar config reply type */
 #define I3_IPC_REPLY_TYPE_BAR_CONFIG 6
-
-/** i3 version reply type */
 #define I3_IPC_REPLY_TYPE_VERSION 7
+#define I3_IPC_REPLY_TYPE_BINDING_MODES 8
 
 /*
  * Events from i3 to clients. Events have the first bit set high.

man/i3-msg.man

@@ -62,6 +62,9 @@ get_bar_config::
 Gets the configuration (as JSON map) of the workspace bar with the given ID. If
 no ID is provided, an array with all configured bar IDs is returned instead.
 
+get_binding_modes::
+Gets a list of configured binding modes.
+
 get_version::
 Gets the version of i3. The reply will be a JSON-encoded dictionary with the
 major, minor, patch and human-readable version.

src/ipc.c

@@ -958,6 +958,28 @@ IPC_HANDLER(get_bar_config) {
     y(free);
 }
 
+/*
+ * Returns a list of configured binding modes
+ *
+ */
+IPC_HANDLER(get_binding_modes) {
+    yajl_gen gen = ygenalloc();
+
+    y(array_open);
+    struct Mode *mode;
+    SLIST_FOREACH(mode, &modes, modes) {
+        ystr(mode->name);
+    }
+    y(array_close);
+
+    const unsigned char *payload;
+    ylength length;
+    y(get_buf, &payload, &length);
+
+    ipc_send_message(fd, length, I3_IPC_REPLY_TYPE_BINDING_MODES, payload);
+    y(free);
+}
+
 /*
  * Callback for the YAJL parser (will be called when a string is parsed).
  *
@@ -1034,7 +1056,7 @@ IPC_HANDLER(subscribe) {
 
 /* The index of each callback function corresponds to the numeric
  * value of the message type (see include/i3/ipc.h) */
-handler_t handlers[8] = {
+handler_t handlers[9] = {
     handle_command,
     handle_get_workspaces,
     handle_subscribe,
@@ -1043,6 +1065,7 @@ handler_t handlers[8] = {
     handle_get_marks,
     handle_get_bar_config,
     handle_get_version,
+    handle_get_binding_modes,
 };
 
 /*