init hs project

1 files changed, 0 insertions, 746 deletions

diff --git a/src/services/application-service.c b/src/services/application-service.c
deleted file mode 100644
index 42835ac..0000000
--- a/src/services/application-service.c
+++ /dev/null
@@ -1,746 +0,0 @@
-#include "services/application-service.h"
-#include "launcher-item.h"
-#include "utils.h"
-#include <gtk/gtk.h>
-#include <gio/gdesktopappinfo.h>
-#include <json-glib/json-glib.h>
-#include <string.h>
-
-//
-// FoobarApplicationItem:
-//
-// Represents a single application/desktop file.
-//
-
-struct _FoobarApplicationItem
-{
-	GObject                   parent_instance;
-	FoobarApplicationService* service;
-	GAppInfo*                 info;
-};
-
-enum
-{
-	APP_PROP_ID = 1,
-	APP_PROP_EXECUTABLE,
-	APP_PROP_CATEGORIES,
-	APP_PROP_FREQUENCY,
-	APP_PROP_TITLE,
-	APP_PROP_DESCRIPTION,
-	APP_PROP_ICON,
-	N_APP_PROPS,
-};
-
-static GParamSpec* app_props[N_APP_PROPS] = { 0 };
-
-static void                   foobar_application_item_class_init                  ( FoobarApplicationItemClass* klass );
-static void                   foobar_application_item_launcher_item_interface_init( FoobarLauncherItemInterface* iface );
-static void                   foobar_application_item_init                        ( FoobarApplicationItem*      self );
-static void                   foobar_application_item_get_property                ( GObject*                    object,
-                                                                                    guint                       prop_id,
-                                                                                    GValue*                     value,
-                                                                                    GParamSpec*                 pspec );
-static void                   foobar_application_item_finalize                    ( GObject*                    object );
-static FoobarApplicationItem* foobar_application_item_new                         ( FoobarApplicationService*   service );
-static gchar const*           foobar_application_item_get_title                   ( FoobarLauncherItem*         self );
-static gchar const*           foobar_application_item_get_description             ( FoobarLauncherItem*         self );
-static GIcon*                 foobar_application_item_get_icon                    ( FoobarLauncherItem*         self );
-static void                   foobar_application_item_activate                    ( FoobarLauncherItem*         self );
-static void                   foobar_application_item_set_info                    ( FoobarApplicationItem*      self,
-                                                                                    GAppInfo*                   value );
-
-G_DEFINE_FINAL_TYPE_WITH_CODE(
-	FoobarApplicationItem,
-	foobar_application_item,
-	G_TYPE_OBJECT,
-	G_IMPLEMENT_INTERFACE( FOOBAR_TYPE_LAUNCHER_ITEM, foobar_application_item_launcher_item_interface_init ) )
-
-//
-// FoobarApplicationService:
-//
-// Service providing a list of all installed applications. This implemented using GLib's AppInfo API.
-//
-
-struct _FoobarApplicationService
-{
-	GObject           parent_instance;
-	GListStore*       items;
-	GtkSortListModel* sorted_items;
-	GAppInfoMonitor*  monitor;
-	GHashTable*       frequencies; // only modified on the main thread, but possibly read on a background thread
-	GMutex            frequencies_mutex;
-	GMutex            write_cache_mutex;
-	gchar*            cache_path;
-	gulong            changed_handler_id;
-};
-
-enum
-{
-	PROP_ITEMS = 1,
-	N_PROPS,
-};
-
-static GParamSpec* props[N_PROPS] = { 0 };
-
-static void     foobar_application_service_class_init            ( FoobarApplicationServiceClass* klass );
-static void     foobar_application_service_init                  ( FoobarApplicationService*      self );
-static void     foobar_application_service_get_property          ( GObject*                       object,
-                                                                   guint                          prop_id,
-                                                                   GValue*                        value,
-                                                                   GParamSpec*                    pspec );
-static void     foobar_application_service_finalize              ( GObject*                       object );
-static void     foobar_application_service_handle_changed        ( GAppInfoMonitor*               monitor,
-                                                                   gpointer                       userdata );
-static void     foobar_application_service_update                ( FoobarApplicationService*      self );
-static void     foobar_application_service_read_cache            ( FoobarApplicationService*      self );
-static void     foobar_application_service_read_cache_foreach_cb ( JsonObject*                    object,
-                                                                   gchar const*                   member_name,
-                                                                   JsonNode*                      member_node,
-                                                                   gpointer                       userdata );
-static void     foobar_application_service_write_cache           ( FoobarApplicationService*      self );
-static void     foobar_application_service_write_cache_cb        ( GObject*                       object,
-                                                                   GAsyncResult*                  result,
-                                                                   gpointer                       userdata );
-static void     foobar_application_service_write_cache_async     ( FoobarApplicationService*      self,
-                                                                   GCancellable*                  cancellable,
-                                                                   GAsyncReadyCallback            callback,
-                                                                   gpointer                       userdata );
-static gboolean foobar_application_service_write_cache_finish    ( FoobarApplicationService*      self,
-                                                                   GAsyncResult*                  result,
-                                                                   GError**                       error );
-static void     foobar_application_service_write_cache_thread    ( GTask*                         task,
-                                                                   gpointer                       source_object,
-                                                                   gpointer                       task_data,
-                                                                   GCancellable*                  cancellable );
-static void     foobar_application_service_write_cache_foreach_cb( gpointer                       key,
-                                                                   gpointer                       value,
-                                                                   gpointer                       userdata );
-static gint     foobar_application_service_sort_func             ( gconstpointer                  item_a,
-                                                                   gconstpointer                  item_b,
-                                                                   gpointer                       userdata );
-
-G_DEFINE_FINAL_TYPE( FoobarApplicationService, foobar_application_service, G_TYPE_OBJECT )
-
-// ---------------------------------------------------------------------------------------------------------------------
-// Item Implementation
-// ---------------------------------------------------------------------------------------------------------------------
-
-//
-// Static initialization for application items.
-//
-void foobar_application_item_class_init( FoobarApplicationItemClass* klass )
-{
-	GObjectClass* object_klass = G_OBJECT_CLASS( klass );
-	object_klass->get_property = foobar_application_item_get_property;
-	object_klass->finalize = foobar_application_item_finalize;
-
-	gpointer launcher_item_iface = g_type_default_interface_peek( FOOBAR_TYPE_LAUNCHER_ITEM );
-	app_props[APP_PROP_ID] = g_param_spec_string(
-		"id",
-		"ID",
-		"Application identifier string.",
-		NULL,
-		G_PARAM_READABLE );
-	app_props[APP_PROP_EXECUTABLE] = g_param_spec_string(
-		"executable",
-		"Executable",
-		"The executable name of the application.",
-		NULL,
-		G_PARAM_READABLE );
-	app_props[APP_PROP_CATEGORIES] = g_param_spec_string(
-		"categories",
-		"Categories",
-		"Semicolon-separated list of application categories.",
-		NULL,
-		G_PARAM_READABLE );
-	app_props[APP_PROP_FREQUENCY] = g_param_spec_int64(
-		"frequency",
-		"Frequency",
-		"The number of times the application was opened.",
-		0,
-		INT64_MAX,
-		0,
-		G_PARAM_READABLE );
-	app_props[APP_PROP_TITLE] = g_param_spec_override(
-		"title",
-		g_object_interface_find_property( launcher_item_iface, "title" ) );
-	app_props[APP_PROP_DESCRIPTION] = g_param_spec_override(
-		"description",
-		g_object_interface_find_property( launcher_item_iface, "description" ) );
-	app_props[APP_PROP_ICON] = g_param_spec_override(
-		"icon",
-		g_object_interface_find_property( launcher_item_iface, "icon" ) );
-	g_object_class_install_properties( object_klass, N_APP_PROPS, app_props );
-}
-
-//
-// Static initialization of the FoobarLauncherItem interface.
-//
-void foobar_application_item_launcher_item_interface_init( FoobarLauncherItemInterface* iface )
-{
-	iface->get_title = foobar_application_item_get_title;
-	iface->get_description = foobar_application_item_get_description;
-	iface->get_icon = foobar_application_item_get_icon;
-	iface->activate = foobar_application_item_activate;
-}
-
-//
-// Instance initialization for application items.
-//
-void foobar_application_item_init( FoobarApplicationItem* self )
-{
-	(void)self;
-}
-
-//
-// Property getter implementation, mapping a property id to a method.
-//
-void foobar_application_item_get_property(
-	GObject*    object,
-	guint       prop_id,
-	GValue*     value,
-	GParamSpec* pspec )
-{
-	FoobarApplicationItem* self = (FoobarApplicationItem*)object;
-
-	switch ( prop_id )
-	{
-		case APP_PROP_ID:
-			g_value_set_string( value, foobar_application_item_get_id( self ) );
-			break;
-		case APP_PROP_EXECUTABLE:
-			g_value_set_string( value, foobar_application_item_get_executable( self ) );
-			break;
-		case APP_PROP_CATEGORIES:
-			g_value_set_string( value, foobar_application_item_get_categories( self ) );
-			break;
-		case APP_PROP_FREQUENCY:
-			g_value_set_int64( value, foobar_application_item_get_frequency( self ) );
-			break;
-		case APP_PROP_TITLE:
-			g_value_set_string( value, foobar_launcher_item_get_title( FOOBAR_LAUNCHER_ITEM ( self ) ) );
-			break;
-		case APP_PROP_DESCRIPTION:
-			g_value_set_string( value, foobar_launcher_item_get_description( FOOBAR_LAUNCHER_ITEM( self ) ) );
-			break;
-		case APP_PROP_ICON:
-			g_value_set_object( value, foobar_launcher_item_get_icon( FOOBAR_LAUNCHER_ITEM( self ) ) );
-			break;
-		default:
-			G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
-			break;
-	}
-}
-
-//
-// Instance cleanup for application items.
-//
-void foobar_application_item_finalize( GObject* object )
-{
-	FoobarApplicationItem* self = (FoobarApplicationItem*)object;
-
-	g_clear_object( &self->info );
-
-	G_OBJECT_CLASS( foobar_application_item_parent_class )->finalize( object );
-}
-
-//
-// Create a new application item belonging to the parent service (captured as an unowned reference).
-//
-FoobarApplicationItem* foobar_application_item_new( FoobarApplicationService* service )
-{
-	FoobarApplicationItem* self = g_object_new( FOOBAR_TYPE_APPLICATION_ITEM, NULL );
-	self->service = service;
-	return self;
-}
-
-//
-// Get the application's unique textual identifier.
-//
-gchar const* foobar_application_item_get_id( FoobarApplicationItem* self )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ), NULL );
-	return self->info ? g_app_info_get_id( self->info ) : NULL;
-}
-
-//
-// Get the application's executable name.
-//
-gchar const* foobar_application_item_get_executable( FoobarApplicationItem* self )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ), NULL );
-	return self->info ? g_app_info_get_executable( self->info ) : NULL;
-}
-
-//
-// Get the semicolon-separated list of categories for this application.
-//
-gchar const* foobar_application_item_get_categories( FoobarApplicationItem* self )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ), NULL );
-	return G_IS_DESKTOP_APP_INFO( self->info )
-		? g_desktop_app_info_get_categories( G_DESKTOP_APP_INFO( self->info ) )
-		: NULL;
-}
-
-//
-// Get the number of times this application was opened using the launcher.
-//
-gint64 foobar_application_item_get_frequency( FoobarApplicationItem* self )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ), 0 );
-
-	if ( !self->service ) { return 0; }
-	gpointer value = g_hash_table_lookup( self->service->frequencies, foobar_application_item_get_id( self ) );
-	return GPOINTER_TO_SIZE( value );
-}
-
-//
-// Get the application's human-readable name.
-//
-gchar const* foobar_application_item_get_title( FoobarLauncherItem* item )
-{
-	FoobarApplicationItem* self = ( FoobarApplicationItem* )item;
-	return self->info ? g_app_info_get_display_name( self->info ) : NULL;
-}
-
-//
-// Get an optional short description for the application.
-//
-gchar const* foobar_application_item_get_description( FoobarLauncherItem* item )
-{
-	FoobarApplicationItem* self = ( FoobarApplicationItem* )item;
-	return self->info ? g_app_info_get_description( self->info ) : NULL;
-}
-
-//
-// Get an icon representing the application.
-//
-GIcon* foobar_application_item_get_icon( FoobarLauncherItem* item )
-{
-	FoobarApplicationItem* self = ( FoobarApplicationItem* )item;
-	return self->info ? g_app_info_get_icon( self->info ) : NULL;
-}
-
-//
-// Launch the application, increasing its frequency by one.
-//
-void foobar_application_item_activate( FoobarLauncherItem* item )
-{
-	FoobarApplicationItem* self = ( FoobarApplicationItem* )item;
-
-	if ( !self->info ) { return; }
-
-	g_autoptr( GError ) error = NULL;
-	if ( !g_app_info_launch( self->info, NULL, NULL, &error ) )
-	{
-		g_warning( "Unable to launch application: %s", error->message );
-	}
-
-	gchar const* id = foobar_application_item_get_id( self );
-	if ( !self->service || !id ) { return; }
-
-	gpointer value = g_hash_table_lookup( self->service->frequencies, id );
-	value = GSIZE_TO_POINTER( GPOINTER_TO_SIZE( value ) + 1 );
-	g_mutex_lock( &self->service->frequencies_mutex );
-	g_hash_table_insert( self->service->frequencies, g_strdup( id ), value );
-	g_mutex_unlock( &self->service->frequencies_mutex );
-
-	g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_FREQUENCY] );
-	gtk_sorter_changed( gtk_sort_list_model_get_sorter( self->service->sorted_items ), GTK_SORTER_CHANGE_DIFFERENT );
-	foobar_application_service_write_cache( self->service );
-}
-
-//
-// Update the backing GAppInfo object for the application.
-//
-void foobar_application_item_set_info(
-	FoobarApplicationItem* self,
-	GAppInfo*              value )
-{
-	g_return_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ) );
-
-	if ( self->info != value )
-	{
-		g_clear_object( &self->info );
-
-		if ( value ) { self->info = g_object_ref( value ); }
-
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_ID] );
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_TITLE] );
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_DESCRIPTION] );
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_EXECUTABLE] );
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_ICON] );
-		g_object_notify_by_pspec( G_OBJECT( self ), app_props[APP_PROP_FREQUENCY] );
-	}
-}
-
-//
-// Match the item against the given search terms.
-//
-gboolean foobar_application_item_match(
-	FoobarApplicationItem* self,
-	gchar const* const*    terms )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_ITEM( self ), FALSE );
-	g_return_val_if_fail( terms != NULL, FALSE );
-
-	for ( gchar const* const* it = terms; *it; ++it )
-	{
-		gchar const* term = *it;
-		gchar const* name = foobar_launcher_item_get_title( FOOBAR_LAUNCHER_ITEM( self ) );
-		gchar const* description = foobar_launcher_item_get_description( FOOBAR_LAUNCHER_ITEM( self ) );
-		gchar const* executable = foobar_application_item_get_executable( self );
-		gchar const* categories = foobar_application_item_get_categories( self );
-		gchar const* id = foobar_application_item_get_id( self );
-		if ( name && strcasestr( name, term ) != NULL ) { continue; }
-		if ( description && strcasestr( description, term ) != NULL ) { continue; }
-		if ( executable && strcasestr( executable, term ) != NULL ) { continue; }
-		if ( categories && strcasestr( categories, term ) != NULL ) { continue; }
-		if ( id && strcasestr( id, term ) != NULL ) { continue; }
-
-		return FALSE;
-	}
-
-	return TRUE;
-}
-
-// ---------------------------------------------------------------------------------------------------------------------
-// Service Implementation
-// ---------------------------------------------------------------------------------------------------------------------
-
-//
-// Static initialization for the application service.
-//
-void foobar_application_service_class_init( FoobarApplicationServiceClass* klass )
-{
-	GObjectClass* object_klass = G_OBJECT_CLASS( klass );
-	object_klass->get_property = foobar_application_service_get_property;
-	object_klass->finalize = foobar_application_service_finalize;
-
-	props[PROP_ITEMS] = g_param_spec_object(
-		"items",
-		"Items",
-		"Application items, sorted by their frequency.",
-		G_TYPE_LIST_MODEL,
-		G_PARAM_READABLE );
-	g_object_class_install_properties( object_klass, N_PROPS, props );
-}
-
-//
-// Instance initialization for the application service.
-//
-void foobar_application_service_init( FoobarApplicationService* self )
-{
-	self->items = g_list_store_new( FOOBAR_TYPE_APPLICATION_ITEM );
-
-	GtkCustomSorter* sorter = gtk_custom_sorter_new( foobar_application_service_sort_func, NULL, NULL );
-	self->sorted_items = gtk_sort_list_model_new( G_LIST_MODEL( g_object_ref( self->items ) ), GTK_SORTER( sorter ) );
-
-	self->cache_path = foobar_get_cache_path( "application-frequencies.json" );
-	self->frequencies = g_hash_table_new_full( g_str_hash, g_str_equal, g_free, NULL );
-	g_mutex_init( &self->frequencies_mutex );
-	g_mutex_init( &self->write_cache_mutex );
-
-	foobar_application_service_read_cache( self );
-	foobar_application_service_update( self );
-
-	self->monitor = g_app_info_monitor_get( );
-	self->changed_handler_id = g_signal_connect(
-		self->monitor,
-		"changed",
-		G_CALLBACK( foobar_application_service_handle_changed ),
-		self );
-}
-
-//
-// Property getter implementation, mapping a property id to a method.
-//
-void foobar_application_service_get_property(
-	GObject*    object,
-	guint       prop_id,
-	GValue*     value,
-	GParamSpec* pspec )
-{
-	FoobarApplicationService* self = (FoobarApplicationService*)object;
-
-	switch ( prop_id )
-	{
-		case PROP_ITEMS:
-			g_value_set_object( value, foobar_application_service_get_items( self ) );
-			break;
-		default:
-			G_OBJECT_WARN_INVALID_PROPERTY_ID( object, prop_id, pspec );
-			break;
-	}
-}
-
-//
-// Instance cleanup for the application service.
-//
-void foobar_application_service_finalize( GObject* object )
-{
-	FoobarApplicationService* self = (FoobarApplicationService*)object;
-
-	for ( guint i = 0; i < g_list_model_get_n_items( G_LIST_MODEL( self->items ) ); ++i )
-	{
-		FoobarApplicationItem* item = g_list_model_get_item( G_LIST_MODEL( self->items ), i );
-		item->service = NULL;
-		g_object_notify_by_pspec( G_OBJECT( item ), app_props[APP_PROP_FREQUENCY] );
-	}
-	g_clear_signal_handler( &self->changed_handler_id, self->monitor );
-	g_clear_object( &self->sorted_items );
-	g_clear_object( &self->items );
-	g_clear_object( &self->monitor );
-	g_clear_pointer( &self->frequencies, g_hash_table_unref );
-	g_clear_pointer( &self->cache_path, g_free );
-
-	g_mutex_clear( &self->frequencies_mutex );
-	g_mutex_clear( &self->write_cache_mutex );
-
-	G_OBJECT_CLASS( foobar_application_service_parent_class )->finalize( object );
-}
-
-// ---------------------------------------------------------------------------------------------------------------------
-// Public API
-// ---------------------------------------------------------------------------------------------------------------------
-
-//
-// Create a new application service instance.
-//
-FoobarApplicationService* foobar_application_service_new( void )
-{
-	return g_object_new( FOOBAR_TYPE_APPLICATION_SERVICE, NULL );
-}
-
-//
-// Get a sorted list of all available applications.
-//
-GListModel* foobar_application_service_get_items( FoobarApplicationService* self )
-{
-	g_return_val_if_fail( FOOBAR_IS_APPLICATION_SERVICE( self ), NULL );
-
-	return G_LIST_MODEL( self->sorted_items );
-}
-
-// ---------------------------------------------------------------------------------------------------------------------
-// Signal Handlers
-// ---------------------------------------------------------------------------------------------------------------------
-
-//
-// Called by GLib when the list of applications has changed.
-//
-void foobar_application_service_handle_changed(
-	GAppInfoMonitor* monitor,
-	gpointer         userdata )
-{
-	(void)monitor;
-	FoobarApplicationService* self = (FoobarApplicationService*)userdata;
-
-	foobar_application_service_update( self );
-}
-
-// ---------------------------------------------------------------------------------------------------------------------
-// Helper Methods
-// ---------------------------------------------------------------------------------------------------------------------
-
-//
-// Reload the list of applications.
-//
-void foobar_application_service_update( FoobarApplicationService* self )
-{
-	g_list_store_remove_all( self->items );
-
-	g_autolist( GAppInfo ) info = g_app_info_get_all( );
-	for ( GList* it = info; it; it = it->next )
-	{
-		if ( g_app_info_should_show( it->data ) )
-		{
-			g_autoptr( FoobarApplicationItem ) item = foobar_application_item_new( self );
-			foobar_application_item_set_info( item, it->data );
-			g_list_store_append( self->items, item );
-		}
-	}
-}
-
-//
-// Synchronously read the frequency cache file at self->cache_path, populating self->frequencies.
-//
-void foobar_application_service_read_cache( FoobarApplicationService* self )
-{
-	g_autoptr( GError ) error = NULL;
-
-	if ( self->cache_path && g_file_test( self->cache_path, G_FILE_TEST_EXISTS ) )
-	{
-		g_autoptr( JsonParser ) parser = json_parser_new( );
-		if ( !json_parser_load_from_mapped_file( parser, self->cache_path, &error ) )
-		{
-			g_warning( "Unable to read cached application frequencies: %s", error->message );
-			return;
-		}
-
-		JsonNode* root_node = json_parser_get_root( parser );
-		JsonObject* root_object = json_node_get_object( root_node );
-		json_object_foreach_member( root_object, foobar_application_service_read_cache_foreach_cb, self );
-	}
-}
-
-//
-// Callback used by foobar_application_service_read_cache to read a single entry.
-//
-void foobar_application_service_read_cache_foreach_cb(
-	JsonObject*  object,
-	gchar const* member_name,
-	JsonNode*    member_node,
-	gpointer     userdata )
-{
-	(void)object;
-	FoobarApplicationService* self = (FoobarApplicationService*)userdata;
-
-	gsize frequency = json_node_get_int( member_node );
-	g_hash_table_insert( self->frequencies, g_strdup( member_name ), GSIZE_TO_POINTER( frequency ) );
-}
-
-//
-// Asynchronously start writing the frequency cache file at self->cache_path.
-//
-void foobar_application_service_write_cache( FoobarApplicationService* self )
-{
-	foobar_application_service_write_cache_async( self, NULL, foobar_application_service_write_cache_cb, NULL );
-}
-
-//
-// Callback invoked when the frequency cache was written successfully or failed.
-//
-void foobar_application_service_write_cache_cb(
-	GObject*      object,
-	GAsyncResult* result,
-	gpointer      userdata )
-{
-	(void)userdata;
-	FoobarApplicationService* self = (FoobarApplicationService*)object;
-
-	g_autoptr( GError ) error = NULL;
-	if ( !foobar_application_service_write_cache_finish( self, result, &error ) )
-	{
-		g_warning( "Unable to write cached application frequencies: %s", error->message );
-	}
-}
-
-//
-// Asynchronously write the frequency cache file at self->cache_path.
-//
-void foobar_application_service_write_cache_async(
-	FoobarApplicationService* self,
-	GCancellable*             cancellable,
-	GAsyncReadyCallback       callback,
-	gpointer                  userdata )
-{
-	g_autoptr( GTask ) task = g_task_new( self, cancellable, callback, userdata );
-	g_task_set_name( task, "write-application-cache" );
-	g_task_run_in_thread( task, foobar_application_service_write_cache_thread );
-}
-
-//
-// Get the asynchronous result for writing the frequency cache file, returning TRUE on success, or FALSE on error.
-//
-gboolean foobar_application_service_write_cache_finish(
-	FoobarApplicationService* self,
-	GAsyncResult*             result,
-	GError**                  error )
-{
-	(void)self;
-
-	return g_task_propagate_boolean( G_TASK( result ), error );
-}
-
-//
-// Task implementation for foobar_application_service_write_cache_async, invoked on a background thread.
-//
-void foobar_application_service_write_cache_thread(
-	GTask*        task,
-	gpointer      source_object,
-	gpointer      task_data,
-	GCancellable* cancellable )
-{
-	(void)cancellable;
-	(void)task_data;
-	FoobarApplicationService* self = (FoobarApplicationService*)source_object;
-
-	if ( !self->cache_path )
-	{
-		g_task_return_boolean( task, TRUE );
-		return;
-	}
-
-	g_autoptr( GError ) error = NULL;
-
-	g_autoptr( JsonBuilder ) builder = json_builder_new( );
-	json_builder_begin_object( builder );
-
-	g_mutex_lock( &self->frequencies_mutex );
-	g_hash_table_foreach( self->frequencies, foobar_application_service_write_cache_foreach_cb, builder );
-	g_mutex_unlock( &self->frequencies_mutex );
-
-	json_builder_end_object( builder );
-
-	g_autoptr( JsonNode ) root_node = json_builder_get_root( builder );
-	g_autoptr( JsonGenerator ) generator = json_generator_new( );
-	json_generator_set_root( generator, root_node );
-
-	g_mutex_lock( &self->write_cache_mutex );
-	gboolean success = json_generator_to_file( generator, self->cache_path, &error );
-	g_mutex_unlock( &self->write_cache_mutex );
-	if ( !success )
-	{
-		g_task_return_error( task, g_steal_pointer( &error ) );
-		return;
-	}
-
-	g_task_return_boolean( task, TRUE );
-}
-
-//
-// Callback used by foobar_application_service_write_cache_thread to build a single entry.
-//
-void foobar_application_service_write_cache_foreach_cb(
-	gpointer key,
-	gpointer value,
-	gpointer userdata )
-{
-	JsonBuilder* builder = (JsonBuilder*)userdata;
-
-	json_builder_set_member_name( builder, key );
-	json_builder_add_int_value( builder, GPOINTER_TO_SIZE( value ) );
-}
-
-//
-// Sorting callback for application items. Items are sorted based on:
-// 1. frequency (descending)
-// 2. name (ascending)
-// 3. id (ascending)
-//
-gint foobar_application_service_sort_func(
-	gconstpointer item_a,
-	gconstpointer item_b,
-	gpointer      userdata )
-{
-	(void)userdata;
-
-	FoobarApplicationItem* app_a = (FoobarApplicationItem*)item_a;
-	FoobarApplicationItem* app_b = (FoobarApplicationItem*)item_b;
-
-	gint64 freq_a = foobar_application_item_get_frequency( app_a );
-	gint64 freq_b = foobar_application_item_get_frequency( app_b );
-	if ( freq_a > freq_b ) { return -1; }
-	if ( freq_a < freq_b ) { return 1; }
-
-	gchar const* name_a = foobar_launcher_item_get_title( FOOBAR_LAUNCHER_ITEM( app_a ) );
-	gchar const* name_b = foobar_launcher_item_get_title( FOOBAR_LAUNCHER_ITEM( app_b ) );
-	gint name_res = g_strcmp0( name_a, name_b );
-	if ( name_res ) { return name_res; }
-
-	gchar const* id_a = foobar_application_item_get_id( app_a );
-	gchar const* id_b = foobar_application_item_get_id( app_b );
-	return g_strcmp0( id_a, id_b );
-}