malcontent/libmalcontent-ui/restrict-applications-selec...

805 lines
27 KiB
C
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
*
* Copyright © 2020 Endless Mobile, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* - Philip Withnall <withnall@endlessm.com>
*/
#include "config.h"
#include <flatpak.h>
#include <gio/gdesktopappinfo.h>
#include <gio/gio.h>
#include <glib.h>
#include <glib-object.h>
#include <glib/gi18n-lib.h>
#include <gtk/gtk.h>
#include <libmalcontent/app-filter.h>
#include "restrict-applications-selector.h"
#define WEB_BROWSERS_CONTENT_TYPE "x-scheme-handler/http"
static void app_info_changed_cb (GAppInfoMonitor *monitor,
gpointer user_data);
static void reload_apps (MctRestrictApplicationsSelector *self);
static GtkWidget *create_row_for_app_cb (gpointer item,
gpointer user_data);
/**
* MctRestrictApplicationsSelector:
*
* The Restrict Applications selector is a list box which shows the available
* applications on the system alongside a column of toggle switches, which
* allows the given user to be prevented from running each application.
*
* The selector takes an #MctRestrictApplicationsSelector:app-filter as input
* to set up the UI, and returns its output as set of modifications to a given
* #MctAppFilterBuilder using
* mct_restrict_applications_selector_build_app_filter().
*
* Since: 0.5.0
*/
struct _MctRestrictApplicationsSelector
{
GtkBox parent_instance;
GtkListBox *listbox;
GList *cached_apps; /* (nullable) (owned) (element-type GAppInfo) */
GListStore *apps; /* (owned) */
GAppInfoMonitor *app_info_monitor; /* (owned) */
gulong app_info_monitor_changed_id;
GHashTable *blocklisted_apps; /* (owned) (element-type GAppInfo) */
MctAppFilter *app_filter; /* (owned) */
FlatpakInstallation *system_installation; /* (owned) */
FlatpakInstallation *user_installation; /* (owned) */
GtkCssProvider *css_provider; /* (owned) */
};
G_DEFINE_TYPE (MctRestrictApplicationsSelector, mct_restrict_applications_selector, GTK_TYPE_BOX)
typedef enum
{
PROP_APP_FILTER = 1,
} MctRestrictApplicationsSelectorProperty;
static GParamSpec *properties[PROP_APP_FILTER + 1];
enum {
SIGNAL_CHANGED,
};
static guint signals[SIGNAL_CHANGED + 1];
static void
mct_restrict_applications_selector_constructed (GObject *obj)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (obj);
/* Default app filter, typically for when were instantiated by #GtkBuilder. */
if (self->app_filter == NULL)
{
g_auto(MctAppFilterBuilder) builder = MCT_APP_FILTER_BUILDER_INIT ();
self->app_filter = mct_app_filter_builder_end (&builder);
}
g_assert (self->app_filter != NULL);
/* Load the apps. */
reload_apps (self);
G_OBJECT_CLASS (mct_restrict_applications_selector_parent_class)->constructed (obj);
}
static void
mct_restrict_applications_selector_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (object);
switch ((MctRestrictApplicationsSelectorProperty) prop_id)
{
case PROP_APP_FILTER:
g_value_set_boxed (value, self->app_filter);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
mct_restrict_applications_selector_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (object);
switch ((MctRestrictApplicationsSelectorProperty) prop_id)
{
case PROP_APP_FILTER:
mct_restrict_applications_selector_set_app_filter (self, g_value_get_boxed (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
mct_restrict_applications_selector_dispose (GObject *object)
{
MctRestrictApplicationsSelector *self = (MctRestrictApplicationsSelector *)object;
g_clear_pointer (&self->blocklisted_apps, g_hash_table_unref);
g_clear_object (&self->apps);
g_clear_list (&self->cached_apps, g_object_unref);
if (self->app_info_monitor != NULL && self->app_info_monitor_changed_id != 0)
{
g_signal_handler_disconnect (self->app_info_monitor, self->app_info_monitor_changed_id);
self->app_info_monitor_changed_id = 0;
}
g_clear_object (&self->app_info_monitor);
g_clear_pointer (&self->app_filter, mct_app_filter_unref);
g_clear_object (&self->system_installation);
g_clear_object (&self->user_installation);
g_clear_object (&self->css_provider);
G_OBJECT_CLASS (mct_restrict_applications_selector_parent_class)->dispose (object);
}
static void
mct_restrict_applications_selector_class_init (MctRestrictApplicationsSelectorClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
object_class->constructed = mct_restrict_applications_selector_constructed;
object_class->get_property = mct_restrict_applications_selector_get_property;
object_class->set_property = mct_restrict_applications_selector_set_property;
object_class->dispose = mct_restrict_applications_selector_dispose;
/**
* MctRestrictApplicationsSelector:app-filter: (not nullable)
*
* The users current app filter, used to set up the selector. As app filters
* are immutable, it is not updated as the selector is changed. Use
* mct_restrict_applications_selector_build_app_filter() to build the new app
* filter.
*
* Since: 0.5.0
*/
properties[PROP_APP_FILTER] =
g_param_spec_boxed ("app-filter",
"App Filter",
"The users current app filter, used to set up the selector.",
MCT_TYPE_APP_FILTER,
G_PARAM_READWRITE |
G_PARAM_STATIC_STRINGS |
G_PARAM_EXPLICIT_NOTIFY);
g_object_class_install_properties (object_class, G_N_ELEMENTS (properties), properties);
/**
* MctRestrictApplicationsSelector::changed:
*
* Emitted whenever an application in the list is blocked or unblocked.
*
* Since: 0.5.0
*/
signals[SIGNAL_CHANGED] =
g_signal_new ("changed",
MCT_TYPE_RESTRICT_APPLICATIONS_SELECTOR,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
gtk_widget_class_set_template_from_resource (widget_class, "/org/freedesktop/MalcontentUi/ui/restrict-applications-selector.ui");
gtk_widget_class_bind_template_child (widget_class, MctRestrictApplicationsSelector, listbox);
}
static void
mct_restrict_applications_selector_init (MctRestrictApplicationsSelector *self)
{
gtk_widget_init_template (GTK_WIDGET (self));
self->apps = g_list_store_new (G_TYPE_APP_INFO);
self->cached_apps = NULL;
self->app_info_monitor = g_app_info_monitor_get ();
self->app_info_monitor_changed_id =
g_signal_connect (self->app_info_monitor, "changed",
(GCallback) app_info_changed_cb, self);
gtk_list_box_bind_model (self->listbox,
G_LIST_MODEL (self->apps),
create_row_for_app_cb,
self,
NULL);
self->blocklisted_apps = g_hash_table_new_full (g_direct_hash,
g_direct_equal,
g_object_unref,
NULL);
self->system_installation = flatpak_installation_new_system (NULL, NULL);
self->user_installation = flatpak_installation_new_user (NULL, NULL);
self->css_provider = gtk_css_provider_new ();
gtk_css_provider_load_from_resource (self->css_provider,
"/org/freedesktop/MalcontentUi/ui/restricts-switch.css");
}
static void
on_switch_active_changed_cb (GtkSwitch *s,
GParamSpec *pspec,
gpointer user_data)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (user_data);
GAppInfo *app;
gboolean allowed;
app = g_object_get_data (G_OBJECT (s), "GAppInfo");
allowed = !gtk_switch_get_active (s);
if (allowed)
{
gboolean removed;
g_debug ("Removing %s from blocklisted apps", g_app_info_get_id (app));
removed = g_hash_table_remove (self->blocklisted_apps, app);
g_assert (removed);
}
else
{
gboolean added;
g_debug ("Blocklisting %s", g_app_info_get_id (app));
added = g_hash_table_add (self->blocklisted_apps, g_object_ref (app));
g_assert (added);
}
g_signal_emit (self, signals[SIGNAL_CHANGED], 0);
}
static void
update_listbox_row_switch (MctRestrictApplicationsSelector *self,
GtkSwitch *w)
{
GAppInfo *app = g_object_get_data (G_OBJECT (w), "GAppInfo");
gboolean allowed = mct_app_filter_is_appinfo_allowed (self->app_filter, app);
gtk_switch_set_active (w, !allowed);
if (allowed)
g_hash_table_remove (self->blocklisted_apps, app);
else
g_hash_table_add (self->blocklisted_apps, g_object_ref (app));
}
static GtkWidget *
create_row_for_app_cb (gpointer item,
gpointer user_data)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (user_data);
GAppInfo *app = G_APP_INFO (item);
g_autoptr(GIcon) icon = NULL;
GtkWidget *box, *w;
const gchar *app_name;
gint size;
GtkStyleContext *context;
app_name = g_app_info_get_name (app);
g_assert (G_IS_DESKTOP_APP_INFO (app));
icon = g_app_info_get_icon (app);
if (icon == NULL)
icon = g_themed_icon_new ("application-x-executable");
else
g_object_ref (icon);
box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 12);
gtk_container_set_border_width (GTK_CONTAINER (box), 12);
gtk_widget_set_margin_end (box, 12);
/* Icon */
w = gtk_image_new_from_gicon (icon, GTK_ICON_SIZE_DIALOG);
gtk_icon_size_lookup (GTK_ICON_SIZE_DND, &size, NULL);
gtk_image_set_pixel_size (GTK_IMAGE (w), size);
gtk_container_add (GTK_CONTAINER (box), w);
/* App name label */
w = g_object_new (GTK_TYPE_LABEL,
"label", app_name,
"hexpand", TRUE,
"xalign", 0.0,
NULL);
gtk_container_add (GTK_CONTAINER (box), w);
/* Switch */
w = g_object_new (GTK_TYPE_SWITCH,
"valign", GTK_ALIGN_CENTER,
NULL);
context = gtk_widget_get_style_context (w);
gtk_style_context_add_class (context, "restricts");
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (self->css_provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION - 1);
gtk_container_add (GTK_CONTAINER (box), w);
gtk_widget_show_all (box);
/* Fetch status from AccountService */
g_object_set_data_full (G_OBJECT (w), "GAppInfo", g_object_ref (app), g_object_unref);
update_listbox_row_switch (self, GTK_SWITCH (w));
g_signal_connect (w, "notify::active", G_CALLBACK (on_switch_active_changed_cb), self);
return box;
}
static gint
compare_app_info_cb (gconstpointer a,
gconstpointer b,
gpointer user_data)
{
GAppInfo *app_a = (GAppInfo*) a;
GAppInfo *app_b = (GAppInfo*) b;
return g_utf8_collate (g_app_info_get_display_name (app_a),
g_app_info_get_display_name (app_b));
}
static gint
app_compare_id_length_cb (gconstpointer a,
gconstpointer b)
{
GAppInfo *info_a = (GAppInfo *) a, *info_b = (GAppInfo *) b;
const gchar *id_a, *id_b;
gsize id_a_len, id_b_len;
id_a = g_app_info_get_id (info_a);
id_b = g_app_info_get_id (info_b);
if (id_a == NULL && id_b == NULL)
return 0;
else if (id_a == NULL)
return -1;
else if (id_b == NULL)
return 1;
id_a_len = strlen (id_a);
id_b_len = strlen (id_b);
if (id_a_len == id_b_len)
return strcmp (id_a, id_b);
else
return id_a_len - id_b_len;
}
/* Elements in @added_out and @removed_out are valid as long as @old_apps and
* @new_apps are valid.
*
* Both lists have to be sorted the same before calling this function. */
static void
diff_app_lists (GList *old_apps,
GList *new_apps,
GPtrArray **added_out,
GPtrArray **removed_out)
{
g_autoptr(GPtrArray) added = g_ptr_array_new_with_free_func (NULL);
g_autoptr(GPtrArray) removed = g_ptr_array_new_with_free_func (NULL);
GList *o, *n;
g_return_if_fail (added_out != NULL);
g_return_if_fail (removed_out != NULL);
for (o = old_apps, n = new_apps; o != NULL || n != NULL;)
{
int comparison;
if (o == NULL)
comparison = 1;
else if (n == NULL)
comparison = -1;
else
comparison = app_compare_id_length_cb (o->data, n->data);
if (comparison < 0)
{
g_ptr_array_add (removed, o->data);
o = o->next;
}
else if (comparison > 0)
{
g_ptr_array_add (added, n->data);
n = n->next;
}
else
{
o = o->next;
n = n->next;
}
}
*added_out = g_steal_pointer (&added);
*removed_out = g_steal_pointer (&removed);
}
/* This is quite expensive to call, as theres no way to avoid calling
* g_app_info_get_all() to see if anythings changed; and thats quite expensive. */
static void
reload_apps (MctRestrictApplicationsSelector *self)
{
g_autolist(GAppInfo) old_apps = NULL;
g_autolist(GAppInfo) new_apps = NULL;
g_autoptr(GPtrArray) added_apps = NULL, removed_apps = NULL;
g_autoptr(GHashTable) seen_flatpak_ids = NULL;
g_autoptr(GHashTable) seen_executables = NULL;
old_apps = g_steal_pointer (&self->cached_apps);
new_apps = g_app_info_get_all ();
/* Sort the apps by increasing length of #GAppInfo ID. When coupled with the
* deduplication of flatpak IDs and executable paths, below, this should ensure that we
* pick the base app out of any set with matching prefixes and identical app IDs (in
* case of flatpak apps) or executables (for non-flatpak apps), and show only that.
*
* This is designed to avoid listing all the components of LibreOffice for example,
* which all share an app ID and hence have the same entry in the parental controls
* app filter.
*
* Then diff the old and new lists so that the code below doesnt end up
* removing more rows than are necessary, and hence potentially losing
* in-progress user input. */
new_apps = g_list_sort (new_apps, app_compare_id_length_cb);
diff_app_lists (old_apps, new_apps, &added_apps, &removed_apps);
g_debug ("%s: Diffed old and new app lists: %u apps added, %u apps removed",
G_STRFUNC, added_apps->len, removed_apps->len);
seen_flatpak_ids = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
seen_executables = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, NULL);
/* Remove items first. */
for (guint i = 0; i < removed_apps->len; i++)
{
GAppInfo *app = removed_apps->pdata[i];
guint pos;
gboolean found;
found = g_list_store_find_with_equal_func (self->apps, app,
(GEqualFunc) g_app_info_equal, &pos);
/* The app being removed may have not passed the condition checks below
* to have been added to self->apps. */
if (!found)
continue;
g_debug ("Removing app %s", g_app_info_get_id (app));
g_list_store_remove (self->apps, pos);
}
/* Now add the new items. */
for (guint i = 0; i < added_apps->len; i++)
{
GAppInfo *app = added_apps->pdata[i];
const gchar *app_name;
const gchar * const *supported_types;
app_name = g_app_info_get_name (app);
supported_types = g_app_info_get_supported_types (app);
if (!G_IS_DESKTOP_APP_INFO (app) ||
!g_app_info_should_show (app) ||
app_name[0] == '\0' ||
/* Endless' link apps have the "eos-link" prefix, and should be ignored too */
g_str_has_prefix (g_app_info_get_id (app), "eos-link") ||
/* FIXME: Only list flatpak apps and apps with X-Parental-Controls
* key set for now; we really need a system-wide MAC to be able to
* reliably support blocklisting system programs. */
(!g_desktop_app_info_has_key (G_DESKTOP_APP_INFO (app), "X-Flatpak") &&
!g_desktop_app_info_has_key (G_DESKTOP_APP_INFO (app), "X-Parental-Controls")) ||
/* Web browsers are special cased */
(supported_types && g_strv_contains (supported_types, WEB_BROWSERS_CONTENT_TYPE)))
{
continue;
}
if (g_desktop_app_info_has_key (G_DESKTOP_APP_INFO (app), "X-Flatpak"))
{
g_autofree gchar *flatpak_id = NULL;
flatpak_id = g_desktop_app_info_get_string (G_DESKTOP_APP_INFO (app), "X-Flatpak");
g_debug ("Processing app %s (Exec=%s, X-Flatpak=%s)",
g_app_info_get_id (app),
g_app_info_get_executable (app),
flatpak_id);
/* Have we seen this flatpak ID before? */
if (!g_hash_table_add (seen_flatpak_ids, g_steal_pointer (&flatpak_id)))
{
g_debug (" → Skipping %s due to seeing its flatpak ID already",
g_app_info_get_id (app));
continue;
}
}
else if (g_desktop_app_info_has_key (G_DESKTOP_APP_INFO (app), "X-Parental-Controls"))
{
g_autofree gchar *parental_controls_type = NULL;
g_autofree gchar *executable = NULL;
parental_controls_type = g_desktop_app_info_get_string (G_DESKTOP_APP_INFO (app),
"X-Parental-Controls");
/* Ignore X-Parental-Controls=none */
if (g_strcmp0 (parental_controls_type, "none") == 0)
continue;
executable = g_strdup (g_app_info_get_executable (app));
g_debug ("Processing app %s (Exec=%s, X-Parental-Controls=%s)",
g_app_info_get_id (app),
executable,
parental_controls_type);
/* Have we seen this executable before? */
if (!g_hash_table_add (seen_executables, g_steal_pointer (&executable)))
{
g_debug (" → Skipping %s due to seeing its executable already",
g_app_info_get_id (app));
continue;
}
}
g_list_store_insert_sorted (self->apps,
app,
compare_app_info_cb,
self);
}
/* Update the cache for next time. */
self->cached_apps = g_steal_pointer (&new_apps);
}
static void
app_info_changed_cb (GAppInfoMonitor *monitor,
gpointer user_data)
{
MctRestrictApplicationsSelector *self = MCT_RESTRICT_APPLICATIONS_SELECTOR (user_data);
reload_apps (self);
}
/* Will return %NULL if @flatpak_id is not installed. */
static gchar *
get_flatpak_ref_for_app_id (MctRestrictApplicationsSelector *self,
const gchar *flatpak_id,
GCancellable *cancellable)
{
g_autoptr(FlatpakInstalledRef) ref = NULL;
g_autoptr(GError) local_error = NULL;
g_assert (self->system_installation != NULL);
g_assert (self->user_installation != NULL);
/* FIXME technically this does local file I/O and should be async */
ref = flatpak_installation_get_current_installed_app (self->user_installation,
flatpak_id,
cancellable,
&local_error);
if (local_error != NULL &&
!g_error_matches (local_error, FLATPAK_ERROR, FLATPAK_ERROR_NOT_INSTALLED))
{
g_warning ("Error searching for Flatpak ref: %s", local_error->message);
return NULL;
}
g_clear_error (&local_error);
if (!ref || !flatpak_installed_ref_get_is_current (ref))
{
/* FIXME technically this does local file I/O and should be async */
ref = flatpak_installation_get_current_installed_app (self->system_installation,
flatpak_id,
cancellable,
&local_error);
if (local_error != NULL)
{
if (!g_error_matches (local_error, FLATPAK_ERROR, FLATPAK_ERROR_NOT_INSTALLED))
g_warning ("Error searching for Flatpak ref: %s", local_error->message);
return NULL;
}
}
return flatpak_ref_format_ref (FLATPAK_REF (ref));
}
/**
* mct_restrict_applications_selector_new:
* @app_filter: (transfer none): app filter to configure the selector from initially
*
* Create a new #MctRestrictApplicationsSelector widget.
*
* Returns: (transfer full): a new restricted applications selector
* Since: 0.5.0
*/
MctRestrictApplicationsSelector *
mct_restrict_applications_selector_new (MctAppFilter *app_filter)
{
g_return_val_if_fail (app_filter != NULL, NULL);
return g_object_new (MCT_TYPE_RESTRICT_APPLICATIONS_SELECTOR,
"app-filter", app_filter,
NULL);
}
/**
* mct_restrict_applications_selector_build_app_filter:
* @self: an #MctRestrictApplicationsSelector
* @builder: an existing #MctAppFilterBuilder to modify
*
* Get the app filter settings currently configured in the selector, by modifying
* the given @builder.
*
* Since: 0.5.0
*/
void
mct_restrict_applications_selector_build_app_filter (MctRestrictApplicationsSelector *self,
MctAppFilterBuilder *builder)
{
GDesktopAppInfo *app;
GHashTableIter iter;
g_return_if_fail (MCT_IS_RESTRICT_APPLICATIONS_SELECTOR (self));
g_return_if_fail (builder != NULL);
g_hash_table_iter_init (&iter, self->blocklisted_apps);
while (g_hash_table_iter_next (&iter, (gpointer) &app, NULL))
{
g_autofree gchar *flatpak_id = NULL;
flatpak_id = g_desktop_app_info_get_string (app, "X-Flatpak");
if (flatpak_id)
flatpak_id = g_strstrip (flatpak_id);
if (flatpak_id)
{
g_autofree gchar *flatpak_ref = get_flatpak_ref_for_app_id (self, flatpak_id, NULL);
if (!flatpak_ref)
{
g_warning ("Skipping blocklisting Flatpak ID %s due to it not being installed", flatpak_id);
continue;
}
g_debug ("\t\t → Blocklisting Flatpak ref: %s", flatpak_ref);
mct_app_filter_builder_blocklist_flatpak_ref (builder, flatpak_ref);
}
else
{
const gchar *executable = g_app_info_get_executable (G_APP_INFO (app));
g_autofree gchar *path = g_find_program_in_path (executable);
if (!path)
{
g_warning ("Skipping blocklisting executable %s due to it not being found", executable);
continue;
}
g_debug ("\t\t → Blocklisting path: %s", path);
mct_app_filter_builder_blocklist_path (builder, path);
}
}
}
/**
* mct_restrict_applications_selector_get_app_filter:
* @self: an #MctRestrictApplicationsSelector
*
* Get the value of #MctRestrictApplicationsSelector:app-filter. If the property
* was originally set to %NULL, this will be the empty app filter.
*
* Returns: (transfer none) (not nullable): the initial app filter used to
* populate the selector
* Since: 0.5.0
*/
MctAppFilter *
mct_restrict_applications_selector_get_app_filter (MctRestrictApplicationsSelector *self)
{
g_return_val_if_fail (MCT_IS_RESTRICT_APPLICATIONS_SELECTOR (self), NULL);
return self->app_filter;
}
/**
* mct_restrict_applications_selector_set_app_filter:
* @self: an #MctRestrictApplicationsSelector
* @app_filter: (nullable) (transfer none): the app filter to configure the selector
* from, or %NULL to use an empty app filter
*
* Set the value of #MctRestrictApplicationsSelector:app-filter.
*
* This will overwrite any user changes to the selector, so they should be saved
* first using mct_restrict_applications_selector_build_app_filter() if desired.
*
* Since: 0.5.0
*/
void
mct_restrict_applications_selector_set_app_filter (MctRestrictApplicationsSelector *self,
MctAppFilter *app_filter)
{
g_autoptr(MctAppFilter) owned_app_filter = NULL;
guint n_apps;
g_return_if_fail (MCT_IS_RESTRICT_APPLICATIONS_SELECTOR (self));
/* Default app filter, typically for when were instantiated by #GtkBuilder. */
if (app_filter == NULL)
{
g_auto(MctAppFilterBuilder) builder = MCT_APP_FILTER_BUILDER_INIT ();
owned_app_filter = mct_app_filter_builder_end (&builder);
app_filter = owned_app_filter;
}
if (app_filter == self->app_filter)
return;
g_clear_pointer (&self->app_filter, mct_app_filter_unref);
self->app_filter = mct_app_filter_ref (app_filter);
/* Update the status of each app row. */
n_apps = g_list_model_get_n_items (G_LIST_MODEL (self->apps));
for (guint i = 0; i < n_apps; i++)
{
GtkListBoxRow *row;
GtkWidget *box, *w;
g_autoptr(GList) children = NULL; /* (element-type GtkWidget) */
/* Navigate the widget hierarchy set up in create_row_for_app_cb(). */
row = gtk_list_box_get_row_at_index (self->listbox, i);
g_assert (row != NULL && GTK_IS_LIST_BOX_ROW (row));
box = gtk_bin_get_child (GTK_BIN (row));
g_assert (box != NULL && GTK_IS_BOX (box));
children = gtk_container_get_children (GTK_CONTAINER (box));
g_assert (children != NULL);
w = g_list_nth_data (children, 2);
g_assert (w != NULL && GTK_IS_SWITCH (w));
update_listbox_row_switch (self, GTK_SWITCH (w));
}
g_object_notify_by_pspec (G_OBJECT (self), properties[PROP_APP_FILTER]);
}