types/wlr_switch: add base wlr_input_device

wlr_switch owns its wlr_input_device. It will be initialized when the
switch is initialized, and finished when the switch is destroyed.

backend/libinput/switch.c

@@ -16,8 +16,11 @@ struct wlr_switch *create_libinput_switch(
 		wlr_log(WLR_ERROR, "Unable to allocate wlr_switch");
 		return NULL;
 	}
-	wlr_switch_init(wlr_switch, NULL);
-	wlr_log(WLR_DEBUG, "Created switch for device %s", libinput_device_get_name(libinput_dev));
+	const char *name = libinput_device_get_name(libinput_dev);
+	wlr_switch_init(wlr_switch, NULL, name);
+	wlr_log(WLR_DEBUG, "Created switch for device %s", name);
+	wlr_switch->base.vendor = libinput_device_get_id_vendor(libinput_dev);
+	wlr_switch->base.product = libinput_device_get_id_product(libinput_dev);
 	return wlr_switch;
 }
 

include/wlr/interfaces/wlr_switch.h

@@ -16,7 +16,7 @@ struct wlr_switch_impl {
 };
 
 void wlr_switch_init(struct wlr_switch *switch_device,
-		struct wlr_switch_impl *impl);
+	struct wlr_switch_impl *impl, const char *name);
 void wlr_switch_destroy(struct wlr_switch *switch_device);
 
 #endif

include/wlr/types/wlr_switch.h

@@ -16,6 +16,8 @@
 struct wlr_switch_impl;
 
 struct wlr_switch {
+	struct wlr_input_device base;
+
 	struct wlr_switch_impl *impl;
 
 	struct {

types/wlr_switch.c

@@ -1,11 +1,16 @@
 #include <stdlib.h>
 #include <string.h>
 #include <wayland-server-core.h>
+#include <wlr/interfaces/wlr_input_device.h>
 #include <wlr/interfaces/wlr_switch.h>
 #include <wlr/types/wlr_switch.h>
 
 void wlr_switch_init(struct wlr_switch *switch_device,
-		struct wlr_switch_impl *impl) {
+		struct wlr_switch_impl *impl, const char *name) {
+	wlr_input_device_init(&switch_device->base, WLR_INPUT_DEVICE_SWITCH, NULL,
+		name);
+	switch_device->base.switch_device = switch_device;
+
 	switch_device->impl = impl;
 	wl_signal_init(&switch_device->events.toggle);
 }
@@ -14,6 +19,7 @@ void wlr_switch_destroy(struct wlr_switch *switch_device) {
 	if (!switch_device) {
 		return;
 	}
+	wlr_input_device_finish(&switch_device->base);
 	if (switch_device->impl && switch_device->impl->destroy) {
 		switch_device->impl->destroy(switch_device);
 	} else {