input: Eliminate weston_seat::has_pointer/keyboard/touch

We can just look at weston_seat::pointer/keyboard/touch now.

src/compositor.h

@@ -441,11 +441,8 @@ struct weston_seat {
 	struct weston_touch *touch;
 
 	struct weston_pointer pointer_instance;
-	int has_pointer;
 	struct weston_keyboard keyboard_instance;
-	int has_keyboard;
 	struct weston_touch touch_instance;
-	int has_touch;
 	struct wl_signal destroy_signal;
 
 	struct weston_compositor *compositor;

src/input.c

@@ -1444,7 +1444,7 @@ weston_compositor_build_global_keymap(struct weston_compositor *ec)
 WL_EXPORT int
 weston_seat_init_keyboard(struct weston_seat *seat, struct xkb_keymap *keymap)
 {
-	if (seat->has_keyboard)
+	if (seat->keyboard)
 		return 0;
 
 	if (keymap != NULL) {
@@ -1469,33 +1469,27 @@ weston_seat_init_keyboard(struct weston_seat *seat, struct xkb_keymap *keymap)
 	weston_keyboard_init(&seat->keyboard_instance);
 	weston_seat_set_keyboard(seat, &seat->keyboard_instance);
 
-	seat->has_keyboard = 1;
-
 	return 0;
 }
 
 WL_EXPORT void
 weston_seat_init_pointer(struct weston_seat *seat)
 {
-	if (seat->has_pointer)
+	if (seat->pointer)
 		return;
 
 	weston_pointer_init(&seat->pointer_instance);
 	weston_seat_set_pointer(seat, &seat->pointer_instance);
-
-	seat->has_pointer = 1;
 }
 
 WL_EXPORT void
 weston_seat_init_touch(struct weston_seat *seat)
 {
-	if (seat->has_touch)
+	if (seat->touch)
 		return;
 
 	weston_touch_init(&seat->touch_instance);
 	weston_seat_set_touch(seat, &seat->touch_instance);
-
-	seat->has_touch = 1;
 }
 
 WL_EXPORT void
@@ -1509,10 +1503,6 @@ weston_seat_init(struct weston_seat *seat, struct weston_compositor *ec)
 	wl_list_init(&seat->drag_resource_list);
 	wl_signal_init(&seat->destroy_signal);
 
-	seat->has_pointer = 0;
-	seat->has_keyboard = 0;
-	seat->has_touch = 0;
-
 	wl_display_add_global(ec->wl_display, &wl_seat_interface, seat,
 			      bind_seat);
 

src/shell.c

@@ -900,7 +900,7 @@ move_surface_to_workspace(struct desktop_shell *shell,
 
 	drop_focus_state(shell, from, surface);
 	wl_list_for_each(seat, &shell->compositor->seat_list, link)
-		if (seat->has_keyboard &&
+		if (seat->keyboard &&
 		    seat->keyboard->focus == &surface->surface)
 			weston_keyboard_set_focus(seat->keyboard, NULL);
 
@@ -3127,7 +3127,7 @@ weston_surface_set_initial_position (struct weston_surface *surface,
 	 * TODO: Do something clever for touch too?
 	 */
 	wl_list_for_each(seat, &compositor->seat_list, link) {
-		if (seat->has_pointer) {
+		if (seat->pointer) {
 			ix = wl_fixed_to_int(seat->pointer->x);
 			iy = wl_fixed_to_int(seat->pointer->y);
 			break;

src/text-backend.c

@@ -810,7 +810,7 @@ input_method_init_seat(struct weston_seat *seat)
 	if (seat->input_method->focus_listener_initialized)
 		return;
 
-	if (seat->has_keyboard) {
+	if (seat->keyboard) {
 		seat->input_method->keyboard_focus_listener.notify = handle_keyboard_focus;
 		wl_signal_add(&seat->keyboard->focus_signal, &seat->input_method->keyboard_focus_listener);
 		seat->keyboard->input_method_grab.interface = &input_method_context_grab;