Refactor out wlr_tablet_pad_state

backend/libinput/tablet_pad.c

@@ -10,7 +10,13 @@
 struct wlr_tablet_pad *wlr_libinput_tablet_pad_create(
 		struct libinput_device *libinput_dev) {
 	assert(libinput_dev);
-	return wlr_tablet_pad_create(NULL, NULL);
+	struct wlr_tablet_pad *wlr_tablet_pad = calloc(1, sizeof(struct wlr_tablet_pad));
+	if (!wlr_tablet_pad) {
+		wlr_log(L_ERROR, "Unable to allocate wlr_tablet_pad");
+		return NULL;
+	}
+	wlr_tablet_pad_init(wlr_tablet_pad, NULL);
+	return wlr_tablet_pad;
 }
 
 void handle_tablet_pad_button(struct libinput_event *event,

include/wlr/interfaces/wlr_tablet_pad.h

@@ -3,11 +3,11 @@
 #include <wlr/types/wlr_tablet_pad.h>
 
 struct wlr_tablet_pad_impl {
-	void (*destroy)(struct wlr_tablet_pad_state *pad);
+	void (*destroy)(struct wlr_tablet_pad *pad);
 };
 
-struct wlr_tablet_pad *wlr_tablet_pad_create(struct wlr_tablet_pad_impl *impl,
+void wlr_tablet_pad_init(struct wlr_tablet_pad *pad,
-		struct wlr_tablet_pad_state *state);
+		struct wlr_tablet_pad_impl *impl);
 void wlr_tablet_pad_destroy(struct wlr_tablet_pad *pad);
 
 #endif

include/wlr/types/wlr_tablet_pad.h

@@ -11,11 +11,9 @@
  */
 
 struct wlr_tablet_pad_impl;
-struct wlr_tablet_pad_state;
 
 struct wlr_tablet_pad {
 	struct wlr_tablet_pad_impl *impl;
-	struct wlr_tablet_pad_state *state;
 
 	struct {
 		struct wl_signal button;

types/wlr_tablet_pad.c

@@ -4,21 +4,19 @@
 #include <wlr/types/wlr_tablet_pad.h>
 #include <wlr/interfaces/wlr_tablet_pad.h>
 
-struct wlr_tablet_pad *wlr_tablet_pad_create(struct wlr_tablet_pad_impl *impl,
+void wlr_tablet_pad_init(struct wlr_tablet_pad *pad,
-		struct wlr_tablet_pad_state *state) {
+		struct wlr_tablet_pad_impl *impl) {
-	struct wlr_tablet_pad *pad = calloc(1, sizeof(struct wlr_tablet_pad));
 	pad->impl = impl;
-	pad->state = state;
 	wl_signal_init(&pad->events.button);
 	wl_signal_init(&pad->events.ring);
 	wl_signal_init(&pad->events.strip);
-	return pad;
 }
 
 void wlr_tablet_pad_destroy(struct wlr_tablet_pad *pad) {
 	if (!pad) return;
-	if (pad->impl) {
+	if (pad->impl && pad->impl->destroy) {
-		pad->impl->destroy(pad->state);
+		pad->impl->destroy(pad);
-	}
+	} else {
 		free(pad);
 	}
+}