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xdg-shell: Require proper object tree destruction

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Require all child objects to be destroyed before the parent. In other
words, all popups and surfaces created by one xdg_shell instance needs
to be destroyed before the xdg_shell object, otherwise a protocol error
is raised.

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
Reviewed-by: Bryce Harrington <bryce@osg.samsung.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Jonas Ådahl 2015-03-18 16:20:51 +08:00
parent 29612053e5
commit 49d77d20ae
2 changed files with 29 additions and 3 deletions
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26
desktop-shell/shell.c
View file

@ -107,6 +107,7 @@ struct shell_surface {
struct wl_resource *resource;
struct wl_signal destroy_signal;
struct shell_client *owner;
struct wl_resource *owner_resource;
struct weston_surface *surface;
struct weston_view *view;
@ -239,6 +240,7 @@ struct shell_client {
struct wl_event_source *ping_timer;
uint32_t ping_serial;
int unresponsive;
struct wl_list surface_list;
};
static struct desktop_shell *
@ -3552,6 +3554,7 @@ shell_destroy_shell_surface(struct wl_resource *resource)
if (!wl_list_empty(&shsurf->popup.grab_link))
remove_popup_grab(shsurf);
wl_list_remove(wl_resource_get_link(shsurf->resource));
shsurf->resource = NULL;
}
@ -3723,6 +3726,7 @@ shell_get_shell_surface(struct wl_client *client,
wl_resource_set_implementation(shsurf->resource,
&shell_surface_implementation,
shsurf, shell_destroy_shell_surface);
wl_list_init(wl_resource_get_link(shsurf->resource));
}
static bool
@ -3986,6 +3990,21 @@ static void
xdg_shell_destroy(struct wl_client *client,
struct wl_resource *resource)
{
struct shell_client *sc = wl_resource_get_user_data(resource);
struct wl_resource *shsurf_resource;
struct shell_surface *shsurf;
wl_resource_for_each(shsurf_resource, &sc->surface_list) {
shsurf = wl_resource_get_user_data(shsurf_resource);
if (shsurf->owner_resource == resource) {
wl_resource_post_error(
resource,
XDG_SHELL_ERROR_DEFUNCT_SURFACES,
"not all child surface objects destroyed");
return;
}
}
wl_resource_destroy(resource);
}
@ -4054,6 +4073,9 @@ xdg_get_xdg_surface(struct wl_client *client,
wl_resource_set_implementation(shsurf->resource,
&xdg_surface_implementation,
shsurf, shell_destroy_shell_surface);
shsurf->owner_resource = resource;
wl_list_insert(&sc->surface_list,
wl_resource_get_link(shsurf->resource));
}
static bool
@ -4180,6 +4202,9 @@ xdg_get_xdg_popup(struct wl_client *client,
wl_resource_set_implementation(shsurf->resource,
&xdg_popup_implementation,
shsurf, shell_destroy_shell_surface);
shsurf->owner_resource = resource;
wl_list_insert(&sc->surface_list,
wl_resource_get_link(shsurf->resource));
}
static void
@ -5797,6 +5822,7 @@ shell_client_create(struct wl_client *client, struct desktop_shell *shell,
sc->shell = shell;
sc->destroy_listener.notify = handle_shell_client_destroy;
wl_client_add_destroy_listener(client, &sc->destroy_listener);
wl_list_init(&sc->surface_list);
return sc;
}

6
protocol/xdg-shell.xml
View file

@ -49,6 +49,7 @@
<enum name="error">
<entry name="role" value="0" summary="given wl_surface has another role"/>
<entry name="defunct_surfaces" value="1" summary="xdg_shell was destroyed before children"/>
</enum>
<request name="destroy" type="destructor">
@ -56,9 +57,8 @@
Destroy this xdg_shell object.
Destroying a bound xdg_shell object while there are surfaces
still alive with roles from this interface is illegal and will
result in a protocol error. Make sure to destroy all surfaces
before destroying this object.
still alive created by this xdg_shell object instance is illegal
and will result in a protocol error.
</description>
</request>