From 519038a7e903caae731007b276f5666a341498e9 Mon Sep 17 00:00:00 2001
From: Daniel De Graaf <code@danieldg.net>
Date: Tue, 8 Mar 2022 21:14:26 -0500
Subject: Implement ext-session-lock-v1

---
 sway/input/input-manager.c |  4 ++++
 sway/input/keyboard.c      |  3 ++-
 sway/input/seat.c          | 27 ++++++++++++++++++++++-----
 sway/input/switch.c        |  3 ++-
 4 files changed, 30 insertions(+), 7 deletions(-)

(limited to 'sway/input')

diff --git a/sway/input/input-manager.c b/sway/input/input-manager.c
index 8538d97c..4a0bce0e 100644
--- a/sway/input/input-manager.c
+++ b/sway/input/input-manager.c
@@ -289,6 +289,10 @@ static void handle_inhibit_deactivate(struct wl_listener *listener, void *data)
 	struct sway_input_manager *input_manager = wl_container_of(
 			listener, input_manager, inhibit_deactivate);
 	struct sway_seat *seat;
+	if (server.session_lock.locked) {
+		// Don't deactivate the grab of a screenlocker
+		return;
+	}
 	wl_list_for_each(seat, &input_manager->seats, link) {
 		seat_set_exclusive_client(seat, NULL);
 		struct sway_node *previous = seat_get_focus(seat);
diff --git a/sway/input/keyboard.c b/sway/input/keyboard.c
index 1aa30655..8f18b8ba 100644
--- a/sway/input/keyboard.c
+++ b/sway/input/keyboard.c
@@ -409,7 +409,8 @@ static void handle_key_event(struct sway_keyboard *keyboard,
 	char *device_identifier = input_device_get_identifier(wlr_device);
 	bool exact_identifier = wlr_device->keyboard->group != NULL;
 	seat_idle_notify_activity(seat, IDLE_SOURCE_KEYBOARD);
-	bool input_inhibited = seat->exclusive_client != NULL;
+	bool input_inhibited = seat->exclusive_client != NULL ||
+		server.session_lock.locked;
 	struct sway_keyboard_shortcuts_inhibitor *sway_inhibitor =
 		keyboard_shortcuts_inhibitor_get_for_focused_surface(seat);
 	bool shortcuts_inhibited = sway_inhibitor && sway_inhibitor->inhibitor->active;
diff --git a/sway/input/seat.c b/sway/input/seat.c
index 85179dc7..fa83050b 100644
--- a/sway/input/seat.c
+++ b/sway/input/seat.c
@@ -212,6 +212,15 @@ static void seat_send_focus(struct sway_node *node, struct sway_seat *seat) {
 	}
 }
 
+void sway_force_focus(struct wlr_surface *surface) {
+	struct sway_seat *seat;
+	wl_list_for_each(seat, &server.input->seats, link) {
+		seat_keyboard_notify_enter(seat, surface);
+		seat_tablet_pads_notify_enter(seat, surface);
+		sway_input_method_relay_set_focus(&seat->im_relay, surface);
+	}
+}
+
 void seat_for_each_node(struct sway_seat *seat,
 		void (*f)(struct sway_node *node, void *data), void *data) {
 	struct sway_seat_node *current = NULL;
@@ -814,11 +823,13 @@ static void seat_configure_keyboard(struct sway_seat *seat,
 	sway_keyboard_configure(seat_device->keyboard);
 	wlr_seat_set_keyboard(seat->wlr_seat,
 			seat_device->input_device->wlr_device->keyboard);
-	struct sway_node *focus = seat_get_focus(seat);
-	if (focus && node_is_view(focus)) {
-		// force notify reenter to pick up the new configuration
+
+	// force notify reenter to pick up the new configuration.  This reuses
+	// the current focused surface to avoid breaking input grabs.
+	struct wlr_surface *surface = seat->wlr_seat->keyboard_state.focused_surface;
+	if (surface) {
 		wlr_seat_keyboard_notify_clear_focus(seat->wlr_seat);
-		seat_keyboard_notify_enter(seat, focus->sway_container->view->surface);
+		seat_keyboard_notify_enter(seat, surface);
 	}
 }
 
@@ -1070,7 +1081,8 @@ void seat_configure_xcursor(struct sway_seat *seat) {
 bool seat_is_input_allowed(struct sway_seat *seat,
 		struct wlr_surface *surface) {
 	struct wl_client *client = wl_resource_get_client(surface->resource);
-	return !seat->exclusive_client || seat->exclusive_client == client;
+	return seat->exclusive_client == client ||
+		(seat->exclusive_client == NULL && !server.session_lock.locked);
 }
 
 static void send_unfocus(struct sway_container *con, void *data) {
@@ -1171,6 +1183,11 @@ void seat_set_focus(struct sway_seat *seat, struct sway_node *node) {
 		return;
 	}
 
+	// Deny setting focus when an input grab or lockscreen is active
+	if (container && !seat_is_input_allowed(seat, container->view->surface)) {
+		return;
+	}
+
 	struct sway_output *new_output =
 		new_workspace ? new_workspace->output : NULL;
 
diff --git a/sway/input/switch.c b/sway/input/switch.c
index af5a2385..ac4baece 100644
--- a/sway/input/switch.c
+++ b/sway/input/switch.c
@@ -34,7 +34,8 @@ static bool sway_switch_trigger_test(enum sway_switch_trigger trigger,
 
 static void execute_binding(struct sway_switch *sway_switch) {
 	struct sway_seat* seat = sway_switch->seat_device->sway_seat;
-	bool input_inhibited = seat->exclusive_client != NULL;
+	bool input_inhibited = seat->exclusive_client != NULL ||
+		server.session_lock.locked;
 
 	list_t *bindings = config->current_mode->switch_bindings;
 	struct sway_switch_binding *matched_binding = NULL;
-- 
cgit v1.2.3-54-g00ecf