3 files changed, 70 insertions, 3 deletions

diff --git a/sway/input/cursor.c b/sway/input/cursor.c
index 5f2d650e..217c2ddb 100644
--- a/sway/input/cursor.c
+++ b/sway/input/cursor.c
@@ -1,4 +1,9 @@
 #define _XOPEN_SOURCE 700
+#ifdef __linux__
+#include <linux/input-event-codes.h>
+#elif __FreeBSD__
+#include <dev/evdev/input-event-codes.h>
+#endif
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include "sway/input/cursor.h"
@@ -57,6 +62,16 @@ static void handle_cursor_button(struct wl_listener *listener, void *data) {
 	struct sway_cursor *cursor =
 		wl_container_of(listener, cursor, button);
 	struct wlr_event_pointer_button *event = data;
+
+	if (event->button == BTN_LEFT) {
+		struct wlr_surface *surface = NULL;
+		double sx, sy;
+		swayc_t *swayc =
+			swayc_at(&root_container, cursor->x, cursor->y, &surface, &sx, &sy);
+
+		sway_seat_set_focus(cursor->seat, swayc);
+	}
+
 	wlr_seat_pointer_notify_button(cursor->seat->seat, event->time_msec,
 		event->button, event->state);
 }
diff --git a/sway/input/input-manager.c b/sway/input/input-manager.c
index 4f52e59a..ca80f267 100644
--- a/sway/input/input-manager.c
+++ b/sway/input/input-manager.c
@@ -27,7 +27,7 @@ static struct sway_seat *input_manager_get_seat(
 		}
 	}
 
-	seat = sway_seat_create(input->server->wl_display, seat_name);
+	seat = sway_seat_create(input, seat_name);
 	list_add(input->seats, seat);
 
 	return seat;
@@ -131,3 +131,15 @@ char *libinput_dev_unique_id(struct libinput_device *device) {
 	free(name);
 	return identifier;
 }
+
+bool sway_input_manager_swayc_has_focus(struct sway_input_manager *input,
+		swayc_t *container) {
+	for (int i = 0; i < input->seats->length; ++i) {
+		struct sway_seat *seat = input->seats->items[i];
+		if (seat->focus == container) {
+			return true;
+		}
+	}
+
+	return false;
+}
diff --git a/sway/input/seat.c b/sway/input/seat.c
index 5aed1f68..94f547cc 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -5,16 +5,17 @@
 #include "sway/input/cursor.h"
 #include "sway/input/input-manager.h"
 #include "sway/output.h"
+#include "sway/view.h"
 #include "log.h"
 
-struct sway_seat *sway_seat_create(struct wl_display *display,
+struct sway_seat *sway_seat_create(struct sway_input_manager *input,
 		const char *seat_name) {
 	struct sway_seat *seat = calloc(1, sizeof(struct sway_seat));
 	if (!seat) {
 		return NULL;
 	}
 
-	seat->seat = wlr_seat_create(display, seat_name);
+	seat->seat = wlr_seat_create(input->server->wl_display, seat_name);
 	if (!sway_assert(seat->seat, "could not allocate seat")) {
 		return NULL;
 	}
@@ -26,6 +27,8 @@ struct sway_seat *sway_seat_create(struct wl_display *display,
 		return NULL;
 	}
 
+	seat->input = input;
+
 	wlr_seat_set_capabilities(seat->seat,
 		WL_SEAT_CAPABILITY_KEYBOARD |
 		WL_SEAT_CAPABILITY_POINTER |
@@ -110,3 +113,40 @@ void sway_seat_configure_xcursor(struct sway_seat *seat) {
 	wlr_cursor_warp(seat->cursor->cursor, NULL, seat->cursor->cursor->x,
 		seat->cursor->cursor->y);
 }
+
+static void handle_focus_destroy(struct wl_listener *listener, void *data) {
+	struct sway_seat *seat = wl_container_of(listener, seat, focus_destroy);
+	//swayc_t *container = data;
+
+	// TODO set new focus based on the state of the tree
+	sway_seat_set_focus(seat, NULL);
+}
+
+void sway_seat_set_focus(struct sway_seat *seat, swayc_t *container) {
+	swayc_t *last_focus = seat->focus;
+
+	if (last_focus == container) {
+		return;
+	}
+
+	if (last_focus) {
+		wl_list_remove(&seat->focus_destroy.link);
+	}
+
+	if (container) {
+		struct sway_view *view = container->sway_view;
+		view->iface.set_activated(view, true);
+		wl_signal_add(&container->events.destroy, &seat->focus_destroy);
+		seat->focus_destroy.notify = handle_focus_destroy;
+		// TODO give keyboard focus
+	}
+
+	seat->focus = container;
+
+	if (last_focus &&
+			!sway_input_manager_swayc_has_focus(seat->input, last_focus)) {
+		struct sway_view *view = last_focus->sway_view;
+		view->iface.set_activated(view, false);
+
+	}
+}