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data-device, primary-selection: add request_set_selection

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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
This commit is contained in:
emersion 2018-11-29 19:30:04 +01:00
parent c41d01306d
commit 4cb0697e57
15 changed files with 142 additions and 63 deletions
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6
xwayland/selection/incoming.c
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@ -350,7 +350,7 @@ static void xwm_selection_get_targets(struct wlr_xwm_selection *selection) {
bool ok = source_get_targets(selection, &source->base.mime_types,
&source->mime_types_atoms);
if (ok) {
wlr_seat_set_selection(xwm->seat, &source->base,
wlr_seat_request_set_selection(xwm->seat, &source->base,
wl_display_next_serial(xwm->xwayland->wl_display));
} else {
wlr_data_source_cancel(&source->base);
@ -425,10 +425,10 @@ int xwm_handle_xfixes_selection_notify(struct wlr_xwm *xwm,
// A real X client selection went away, not our
// proxy selection
if (selection == &xwm->clipboard_selection) {
wlr_seat_set_selection(xwm->seat, NULL,
wlr_seat_request_set_selection(xwm->seat, NULL,
wl_display_next_serial(xwm->xwayland->wl_display));
} else if (selection == &xwm->primary_selection) {
wlr_seat_set_primary_selection(xwm->seat, NULL,
wlr_seat_request_set_primary_selection(xwm->seat, NULL,
wl_display_next_serial(xwm->xwayland->wl_display));
} else if (selection == &xwm->dnd_selection) {
// TODO: DND