From 4cb0697e576820774013f399c89fe85673e2f338 Mon Sep 17 00:00:00 2001
From: emersion <contact@emersion.fr>
Date: Thu, 29 Nov 2018 19:30:04 +0100
Subject: data-device, primary-selection: add request_set_selection

This makes compositors able to block and/or customize set_selection requests
coming from clients. For instance, it's possible for a compositor to disable
rich selection content (by removing all MIME types except text/plain). This
commit implements the design proposed in [1].

Two new events are added to wlr_seat: request_set_selection and
request_set_primary_selection. Compositors need to listen to these events and
either destroy the source or effectively set the selection.

Fixes https://github.com/swaywm/wlroots/issues/1138

[1]: https://github.com/swaywm/wlroots/issues/1367#issuecomment-442403454
---
 rootston/seat.c | 29 +++++++++++++++++++++++++++--
 1 file changed, 27 insertions(+), 2 deletions(-)

(limited to 'rootston')

diff --git a/rootston/seat.c b/rootston/seat.c
index dda2f8df..43760a5e 100644
--- a/rootston/seat.c
+++ b/rootston/seat.c
@@ -7,9 +7,11 @@
 #include <wayland-server.h>
 #include <wlr/backend/libinput.h>
 #include <wlr/config.h>
+#include <wlr/types/wlr_data_device.h>
 #include <wlr/types/wlr_idle.h>
 #include <wlr/types/wlr_layer_shell_v1.h>
-#include "wlr/types/wlr_switch.h"
+#include <wlr/types/wlr_primary_selection.h>
+#include <wlr/types/wlr_switch.h>
 #include <wlr/types/wlr_tablet_v2.h>
 #include <wlr/types/wlr_xcursor_manager.h>
 #include <wlr/util/log.h>
@@ -20,7 +22,6 @@
 #include "rootston/text_input.h"
 #include "rootston/xcursor.h"
 
-
 static void handle_keyboard_key(struct wl_listener *listener, void *data) {
 	struct roots_keyboard *keyboard =
 		wl_container_of(listener, keyboard, keyboard_key);
@@ -536,6 +537,22 @@ static void roots_seat_handle_new_drag_icon(struct wl_listener *listener,
 	roots_drag_icon_update_position(icon);
 }
 
+static void roots_seat_handle_request_set_selection(
+		struct wl_listener *listener, void *data) {
+	struct roots_seat *seat =
+		wl_container_of(listener, seat, request_set_selection);
+	struct wlr_seat_request_set_selection_event *event = data;
+	wlr_seat_set_selection(seat->seat, event->source, event->serial);
+}
+
+static void roots_seat_handle_request_set_primary_selection(
+		struct wl_listener *listener, void *data) {
+	struct roots_seat *seat =
+		wl_container_of(listener, seat, request_set_primary_selection);
+	struct wlr_seat_request_set_primary_selection_event *event = data;
+	wlr_seat_set_primary_selection(seat->seat, event->source, event->serial);
+}
+
 void roots_drag_icon_update_position(struct roots_drag_icon *icon) {
 	roots_drag_icon_damage_whole(icon);
 
@@ -621,6 +638,14 @@ struct roots_seat *roots_seat_create(struct roots_input *input, char *name) {
 
 	wl_list_insert(&input->seats, &seat->link);
 
+	seat->request_set_selection.notify =
+		roots_seat_handle_request_set_selection;
+	wl_signal_add(&seat->seat->events.request_set_selection,
+		&seat->request_set_selection);
+	seat->request_set_primary_selection.notify =
+		roots_seat_handle_request_set_primary_selection;
+	wl_signal_add(&seat->seat->events.request_set_primary_selection,
+		&seat->request_set_primary_selection);
 	seat->new_drag_icon.notify = roots_seat_handle_new_drag_icon;
 	wl_signal_add(&seat->seat->events.new_drag_icon, &seat->new_drag_icon);
 	seat->destroy.notify = roots_seat_handle_destroy;
-- 
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