Align ordering of core node properties with i3

Try to better mimic JSON node structure produced by i3 which might be
relied on by already existing tools. In particular having "type" right
after "id" is quite handy for streaming high-performance JSON parsers
such as simdjson (which are handy for maintaining responsiveness on
resource constrained systems).

refer ab2a22a78b/src/ipc.c (L338)

sway/ipc-json.c

@@ -23,6 +23,20 @@
 static const int i3_output_id = INT32_MAX;
 static const int i3_scratch_id = INT32_MAX - 1;
 
+static const char *ipc_json_node_type_description(enum sway_node_type node_type) {
+	switch (node_type) {
+	case N_ROOT:
+		return "root";
+	case N_OUTPUT:
+		return "output";
+	case N_WORKSPACE:
+		return "workspace";
+	case N_CONTAINER:
+		return "con";
+	}
+	return "none";
+}
+
 static const char *ipc_json_layout_description(enum sway_container_layout l) {
 	switch (l) {
 	case L_VERT:
@@ -189,16 +203,22 @@ static json_object *ipc_json_create_empty_rect(void) {
 	return ipc_json_create_rect(&empty);
 }
 
-static json_object *ipc_json_create_node(int id, char *name,
+static json_object *ipc_json_create_node(int id, const char* type, char *name,
 		bool focused, json_object *focus, struct wlr_box *box) {
 	json_object *object = json_object_new_object();
 
 	json_object_object_add(object, "id", json_object_new_int(id));
-	json_object_object_add(object, "name",
+	json_object_object_add(object, "type", json_object_new_string(type));
-			name ? json_object_new_string(name) : NULL);
+	json_object_object_add(object, "orientation",
-	json_object_object_add(object, "rect", ipc_json_create_rect(box));
+			json_object_new_string(
+				ipc_json_orientation_description(L_HORIZ)));
+	json_object_object_add(object, "percent", NULL);
+	json_object_object_add(object, "urgent", json_object_new_boolean(false));
+	json_object_object_add(object, "marks", json_object_new_array());
 	json_object_object_add(object, "focused", json_object_new_boolean(focused));
-	json_object_object_add(object, "focus", focus);
+	json_object_object_add(object, "layout",
+			json_object_new_string(
+				ipc_json_layout_description(L_HORIZ)));
 
 	// set default values to be compatible with i3
 	json_object_object_add(object, "border",
@@ -206,35 +226,25 @@ static json_object *ipc_json_create_node(int id, char *name,
 				ipc_json_border_description(B_NONE)));
 	json_object_object_add(object, "current_border_width",
 			json_object_new_int(0));
-	json_object_object_add(object, "layout",
+	json_object_object_add(object, "rect", ipc_json_create_rect(box));
-			json_object_new_string(
-				ipc_json_layout_description(L_HORIZ)));
-	json_object_object_add(object, "orientation",
-			json_object_new_string(
-				ipc_json_orientation_description(L_HORIZ)));
-	json_object_object_add(object, "percent", NULL);
-	json_object_object_add(object, "window_rect", ipc_json_create_empty_rect());
 	json_object_object_add(object, "deco_rect", ipc_json_create_empty_rect());
+	json_object_object_add(object, "window_rect", ipc_json_create_empty_rect());
 	json_object_object_add(object, "geometry", ipc_json_create_empty_rect());
+	json_object_object_add(object, "name",
+			name ? json_object_new_string(name) : NULL);
 	json_object_object_add(object, "window", NULL);
-	json_object_object_add(object, "urgent", json_object_new_boolean(false));
-	json_object_object_add(object, "marks", json_object_new_array());
-	json_object_object_add(object, "fullscreen_mode", json_object_new_int(0));
 	json_object_object_add(object, "nodes", json_object_new_array());
 	json_object_object_add(object, "floating_nodes", json_object_new_array());
+	json_object_object_add(object, "focus", focus);
+	json_object_object_add(object, "fullscreen_mode", json_object_new_int(0));
 	json_object_object_add(object, "sticky", json_object_new_boolean(false));
 
 	return object;
 }
 
-static void ipc_json_describe_root(struct sway_root *root, json_object *object) {
-	json_object_object_add(object, "type", json_object_new_string("root"));
-}
-
 static void ipc_json_describe_output(struct sway_output *output,
 		json_object *object) {
 	struct wlr_output *wlr_output = output->wlr_output;
-	json_object_object_add(object, "type", json_object_new_string("output"));
 	json_object_object_add(object, "active", json_object_new_boolean(true));
 	json_object_object_add(object, "dpms",
 			json_object_new_boolean(wlr_output->enabled));
@@ -369,11 +379,9 @@ static json_object *ipc_json_describe_scratchpad_output(void) {
 				json_object_new_int(container->node.id));
 	}
 
-	json_object *workspace = ipc_json_create_node(i3_scratch_id,
+	json_object *workspace = ipc_json_create_node(i3_scratch_id, "workspace",
 				"__i3_scratch", false, workspace_focus, &box);
 	json_object_object_add(workspace, "fullscreen_mode", json_object_new_int(1));
-	json_object_object_add(workspace, "type",
-			json_object_new_string("workspace"));
 
 	// List all hidden scratchpad containers as floating nodes
 	json_object *floating_array = json_object_new_array();
@@ -390,10 +398,8 @@ static json_object *ipc_json_describe_scratchpad_output(void) {
 	json_object *output_focus = json_object_new_array();
 	json_object_array_add(output_focus, json_object_new_int(i3_scratch_id));
 
-	json_object *output = ipc_json_create_node(i3_output_id,
+	json_object *output = ipc_json_create_node(i3_output_id, "output",
 					"__i3", false, output_focus, &box);
-	json_object_object_add(output, "type",
-			json_object_new_string("output"));
 	json_object_object_add(output, "layout",
 			json_object_new_string("output"));
 
@@ -423,7 +429,6 @@ static void ipc_json_describe_workspace(struct sway_workspace *workspace,
 	json_object_object_add(object, "fullscreen_mode", json_object_new_int(1));
 	json_object_object_add(object, "output", workspace->output ?
 			json_object_new_string(workspace->output->wlr_output->name) : NULL);
-	json_object_object_add(object, "type", json_object_new_string("workspace"));
 	json_object_object_add(object, "urgent",
 			json_object_new_boolean(workspace->urgent));
 	json_object_object_add(object, "representation", workspace->representation ?
@@ -583,8 +588,10 @@ static void ipc_json_describe_view(struct sway_container *c, json_object *object
 static void ipc_json_describe_container(struct sway_container *c, json_object *object) {
 	json_object_object_add(object, "name",
 			c->title ? json_object_new_string(c->title) : NULL);
-	json_object_object_add(object, "type",
+	if (container_is_floating(c)) {
-			json_object_new_string(container_is_floating(c) ? "floating_con" : "con"));
+		json_object_object_add(object, "type",
+				json_object_new_string("floating_con"));
+	}
 
 	json_object_object_add(object, "layout",
 			json_object_new_string(
@@ -692,12 +699,11 @@ json_object *ipc_json_describe_node(struct sway_node *node) {
 	};
 	seat_for_each_node(seat, focus_inactive_children_iterator, &data);
 
-	json_object *object = ipc_json_create_node(
+	json_object *object = ipc_json_create_node((int)node->id,
-				(int)node->id, name, focused, focus, &box);
+				ipc_json_node_type_description(node->type), name, focused, focus, &box);
 
 	switch (node->type) {
 	case N_ROOT:
-		ipc_json_describe_root(root, object);
 		break;
 	case N_OUTPUT:
 		ipc_json_describe_output(node->sway_output, object);