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Implement the Desktop Action specification

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For some time, the desktop file specification has supported "additional
application actions".  This is intended to allow for additional methods
of starting an app, such as a mail client having a "Compose New Message"
action that brings up the compose window instead of the folder list.

This patch adds support for this with a relatively minimal API.

In the case that the application is a GApplication and DBusActivatable,
desktop actions are translated into GActions that have been added to the
application with g_action_map_add_action().  This more or less closes
the loop on being able to activate an application with an action
invocation (instead of 'activate').

https://bugzilla.gnome.org/show_bug.cgi?id=664444
This commit is contained in:
Ryan Lortie 2013-07-11 12:46:59 -04:00
parent f77e121650
commit 6dc5c118e4
6 changed files with 291 additions and 24 deletions
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4
docs/reference/gio/gio-sections.txt
View File

@ -1518,6 +1518,10 @@ g_desktop_app_info_get_boolean
g_desktop_app_info_has_key
GDesktopAppLaunchCallback
g_desktop_app_info_launch_uris_as_manager
<SUBSECTION>
g_desktop_app_info_list_actions
g_desktop_app_info_get_action_name
g_desktop_app_info_launch_action
<SUBSECTION Standard>
GDesktopAppInfoClass
G_TYPE_DESKTOP_APP_INFO

219
gio/gdesktopappinfo.c
View File

@ -115,6 +115,7 @@ struct _GDesktopAppInfo
char *categories;
char *startup_wm_class;
char **mime_types;
char **actions;
guint nodisplay : 1;
guint hidden : 1;
@ -200,6 +201,7 @@ g_desktop_app_info_finalize (GObject *object)
g_free (info->startup_wm_class);
g_strfreev (info->mime_types);
g_free (info->app_id);
g_strfreev (info->actions);
G_OBJECT_CLASS (g_desktop_app_info_parent_class)->finalize (object);
}
@ -380,7 +382,12 @@ g_desktop_app_info_load_from_keyfile (GDesktopAppInfo *info,
info->startup_wm_class = g_key_file_get_string (key_file, G_KEY_FILE_DESKTOP_GROUP, STARTUP_WM_CLASS_KEY, NULL);
info->mime_types = g_key_file_get_string_list (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_MIME_TYPE, NULL, NULL);
bus_activatable = g_key_file_get_boolean (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_DBUS_ACTIVATABLE, NULL);
info->actions = g_key_file_get_string_list (key_file, G_KEY_FILE_DESKTOP_GROUP, G_KEY_FILE_DESKTOP_KEY_ACTIONS, NULL, NULL);
/* Remove the special-case: no Actions= key just means 0 extra actions */
if (info->actions == NULL)
info->actions = g_new0 (gchar *, 0 + 1);
info->icon = NULL;
if (info->icon_name)
{
@ -1050,17 +1057,18 @@ expand_macro (char macro,
static gboolean
expand_application_parameters (GDesktopAppInfo *info,
const gchar *exec_line,
GList **uris,
int *argc,
char ***argv,
GError **error)
{
GList *uri_list = *uris;
const char *p = info->exec;
const char *p = exec_line;
GString *expanded_exec;
gboolean res;
if (info->exec == NULL)
if (exec_line == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Desktop file didn't specify Exec field"));
@ -1303,6 +1311,7 @@ notify_desktop_launch (GDBusConnection *session_bus,
static gboolean
g_desktop_app_info_launch_uris_with_spawn (GDesktopAppInfo *info,
GDBusConnection *session_bus,
const gchar *exec_line,
GList *uris,
GAppLaunchContext *launch_context,
GSpawnFlags spawn_flags,
@ -1335,8 +1344,7 @@ g_desktop_app_info_launch_uris_with_spawn (GDesktopAppInfo *info,
char *display, *sn_id;
old_uris = uris;
if (!expand_application_parameters (info, &uris,
&argc, &argv, error))
if (!expand_application_parameters (info, exec_line, &uris, &argc, &argv, error))
goto out;
/* Get the subset of URIs we're launching with this process */
@ -1478,6 +1486,33 @@ object_path_from_appid (const gchar *app_id)
return path;
}
static GVariant *
g_desktop_app_info_make_platform_data (GDesktopAppInfo *info,
GList *uris,
GAppLaunchContext *launch_context)
{
GVariantBuilder builder;
g_variant_builder_init (&builder, G_VARIANT_TYPE_VARDICT);
if (launch_context)
{
GList *launched_files = create_files_for_uris (uris);
if (info->startup_notify)
{
gchar *sn_id;
sn_id = g_app_launch_context_get_startup_notify_id (launch_context, G_APP_INFO (info), launched_files);
g_variant_builder_add (&builder, "{sv}", "desktop-startup-id", g_variant_new_take_string (sn_id));
}
g_list_free_full (launched_files, g_object_unref);
}
return g_variant_builder_end (&builder);
}
static gboolean
g_desktop_app_info_launch_uris_with_dbus (GDesktopAppInfo *info,
GDBusConnection *session_bus,
@ -1501,24 +1536,7 @@ g_desktop_app_info_launch_uris_with_dbus (GDesktopAppInfo *info,
g_variant_builder_close (&builder);
}
g_variant_builder_open (&builder, G_VARIANT_TYPE_VARDICT);
if (launch_context)
{
GList *launched_files = create_files_for_uris (uris);
if (info->startup_notify)
{
gchar *sn_id;
sn_id = g_app_launch_context_get_startup_notify_id (launch_context, G_APP_INFO (info), launched_files);
g_variant_builder_add (&builder, "{sv}", "desktop-startup-id", g_variant_new_take_string (sn_id));
}
g_list_free_full (launched_files, g_object_unref);
}
g_variant_builder_close (&builder);
g_variant_builder_add_value (&builder, g_desktop_app_info_make_platform_data (info, uris, launch_context));
/* This is non-blocking API. Similar to launching via fork()/exec()
* we don't wait around to see if the program crashed during startup.
@ -1553,7 +1571,7 @@ g_desktop_app_info_launch_uris_internal (GAppInfo *appinfo,
if (session_bus && info->app_id)
g_desktop_app_info_launch_uris_with_dbus (info, session_bus, uris, launch_context);
else
success = g_desktop_app_info_launch_uris_with_spawn (info, session_bus, uris, launch_context,
success = g_desktop_app_info_launch_uris_with_spawn (info, session_bus, info->exec, uris, launch_context,
spawn_flags, user_setup, user_setup_data,
pid_callback, pid_callback_data, error);
@ -3699,3 +3717,156 @@ g_desktop_app_info_has_key (GDesktopAppInfo *info,
return g_key_file_has_key (info->keyfile,
G_KEY_FILE_DESKTOP_GROUP, key, NULL);
}
/**
* g_desktop_app_info_list_actions:
* @info: a #GDesktopAppInfo
*
* Returns the list of "additional application actions" supported on the
* desktop file, as per the desktop file specification.
*
* As per the specification, this is the list of actions that are
* explicitly listed in the "Actions" key of the [Desktop Entry] group.
*
* Similar to g_app_info_get_all(), this returns all listed actions and
* ignores <literal>OnlyShowIn</literal> or <literal>NotShowIn</literal>
* keys. Use g_desktop_app_info_should_show_action() to determine if an
* action should actually be shown.
*
* Returns: (array zero-terminated=1) (element-type utf8) (transfer none): a list of strings, always non-%NULL
*
* Since: 2.38
**/
const gchar * const *
g_desktop_app_info_list_actions (GDesktopAppInfo *info)
{
g_return_val_if_fail (G_IS_DESKTOP_APP_INFO (info), NULL);
return (const gchar **) info->actions;
}
static gboolean
app_info_has_action (GDesktopAppInfo *info,
const gchar *action_name)
{
gint i;
for (i = 0; info->actions[i]; i++)
if (g_str_equal (info->actions[i], action_name))
return TRUE;
return FALSE;
}
/**
* g_desktop_app_info_get_action_name:
* @info: a #GDesktopAppInfo
* @action_name: the name of the action as from
* g_desktop_app_info_list_actions()
*
* Gets the user-visible display name of the "additional application
* action" specified by @action_name.
*
* This corresponds to the "Name" key within the keyfile group for the
* action.
*
* Returns: (transfer full): the locale-specific action name
*
* Since: 2.38
*/
gchar *
g_desktop_app_info_get_action_name (GDesktopAppInfo *info,
const gchar *action_name)
{
gchar *group_name;
gchar *result;
g_return_val_if_fail (G_IS_DESKTOP_APP_INFO (info), NULL);
g_return_val_if_fail (action_name != NULL, NULL);
g_return_if_fail (app_info_has_action (info, action_name));
group_name = g_strdup_printf ("Desktop Action %s", action_name);
result = g_key_file_get_locale_string (info->keyfile, group_name, "Name", NULL, NULL);
g_free (group_name);
/* The spec says that the Name field must be given.
*
* If it's not, let's follow the behaviour of our get_name()
* implementation above and never return %NULL.
*/
if (result == NULL)
result = g_strdup (_("Unnamed"));
return result;
}
/**
* g_desktop_app_info_launch_action:
* @info: a #GDesktopAppInfo
* @action_name: the name of the action as from
* g_desktop_app_info_list_actions()
* @launch_context: (allow-none): a #GAppLaunchContext
*
* Activates the named application action.
*
* You may only call this function on action names that were
* returned from g_desktop_app_info_list_actions().
*
* Note that if the main entry of the desktop file indicates that the
* application supports startup notification, and @launch_context is
* non-%NULL, then startup notification will be used when activating the
* action (and as such, invocation of the action on the receiving side
* must signal the end of startup notification when it is completed).
* This is the expected behaviour of applications declaring additional
* actions, as per the desktop file specification.
*
* As with g_app_info_launch() there is no way to detect failures that
* occur while using this function.
*
* Since: 2.38
*/
void
g_desktop_app_info_launch_action (GDesktopAppInfo *info,
const gchar *action_name,
GAppLaunchContext *launch_context)
{
GDBusConnection *session_bus;
g_return_if_fail (G_IS_DESKTOP_APP_INFO (info));
g_return_if_fail (action_name != NULL);
g_return_if_fail (app_info_has_action (info, action_name));
session_bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
if (session_bus && info->app_id)
{
gchar *object_path;
object_path = object_path_from_appid (info->app_id);
g_dbus_connection_call (session_bus, info->app_id, object_path,
"org.freedesktop.Application", "ActivateAction",
g_variant_new ("(sav@a{sv})", action_name, NULL,
g_desktop_app_info_make_platform_data (info, NULL, launch_context)),
NULL, G_DBUS_CALL_FLAGS_NONE, -1, NULL, NULL, NULL);
g_free (object_path);
}
else
{
gchar *group_name;
gchar *exec_line;
group_name = g_strdup_printf ("Desktop Action %s", action_name);
exec_line = g_key_file_get_string (info->keyfile, group_name, "Exec", NULL);
g_free (group_name);
if (exec_line)
g_desktop_app_info_launch_uris_with_spawn (info, session_bus, exec_line, NULL, launch_context,
_SPAWN_FLAGS_DEFAULT, NULL, NULL, NULL, NULL, NULL);
}
if (session_bus != NULL)
{
g_dbus_connection_flush (session_bus, NULL, NULL, NULL);
g_object_unref (session_bus);
}
}

12
gio/gdesktopappinfo.h
View File

@ -86,6 +86,18 @@ GLIB_AVAILABLE_IN_2_36
gboolean g_desktop_app_info_get_boolean (GDesktopAppInfo *info,
const char *key);
GLIB_AVAILABLE_IN_2_38
const gchar * const * g_desktop_app_info_list_actions (GDesktopAppInfo *info);
GLIB_AVAILABLE_IN_2_38
void g_desktop_app_info_launch_action (GDesktopAppInfo *info,
const gchar *action_name,
GAppLaunchContext *launch_context);
GLIB_AVAILABLE_IN_2_38
gchar * g_desktop_app_info_get_action_name (GDesktopAppInfo *info,
const gchar *action_name);
#ifndef G_DISABLE_DEPRECATED
#define G_TYPE_DESKTOP_APP_INFO_LOOKUP (g_desktop_app_info_lookup_get_type ())

1
gio/tests/Makefile.am
View File

@ -226,6 +226,7 @@ uninstalled_test_programs += \
$(NULL)
dist_test_data += \
appinfo-test-actions.desktop \
appinfo-test-gnome.desktop \
appinfo-test-notgnome.desktop \
appinfo-test.desktop \

78
gio/tests/desktop-app-info.c
View File

@ -24,6 +24,7 @@
#include <gio/gdesktopappinfo.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static char *basedir;
@ -373,6 +374,82 @@ test_extra_getters (void)
g_object_unref (appinfo);
}
static void
wait_for_file (const gchar *want_this,
const gchar *but_not_this,
const gchar *or_this)
{
gint retries = 600;
/* I hate time-based conditions in tests, but this will wait up to one
* whole minute for "touch file" to finish running. I think it should
* be OK.
*
* 600 * 100ms = 60 seconds.
*/
while (access (want_this, F_OK) != 0)
{
g_usleep (100000); /* 100ms */
g_assert (retries);
retries--;
}
g_assert (access (but_not_this, F_OK) != 0);
g_assert (access (or_this, F_OK) != 0);
unlink (want_this);
unlink (but_not_this);
unlink (or_this);
}
static void
test_actions (void)
{
const gchar * const *actions;
GDesktopAppInfo *appinfo;
gchar *name;
appinfo = g_desktop_app_info_new_from_filename (g_test_get_filename (G_TEST_DIST, "appinfo-test-actions.desktop", NULL));
g_assert (appinfo != NULL);
actions = g_desktop_app_info_list_actions (appinfo);
g_assert_cmpstr (actions[0], ==, "frob");
g_assert_cmpstr (actions[1], ==, "tweak");
g_assert_cmpstr (actions[2], ==, "twiddle");
g_assert_cmpstr (actions[3], ==, "broken");
g_assert_cmpstr (actions[4], ==, NULL);
name = g_desktop_app_info_get_action_name (appinfo, "frob");
g_assert_cmpstr (name, ==, "Frobnicate");
g_free (name);
name = g_desktop_app_info_get_action_name (appinfo, "tweak");
g_assert_cmpstr (name, ==, "Tweak");
g_free (name);
name = g_desktop_app_info_get_action_name (appinfo, "twiddle");
g_assert_cmpstr (name, ==, "Twiddle");
g_free (name);
name = g_desktop_app_info_get_action_name (appinfo, "broken");
g_assert (name != NULL);
g_assert (g_utf8_validate (name, -1, NULL));
g_free (name);
unlink ("frob"); unlink ("tweak"); unlink ("twiddle");
g_desktop_app_info_launch_action (appinfo, "frob", NULL);
wait_for_file ("frob", "tweak", "twiddle");
g_desktop_app_info_launch_action (appinfo, "tweak", NULL);
wait_for_file ("tweak", "frob", "twiddle");
g_desktop_app_info_launch_action (appinfo, "twiddle", NULL);
wait_for_file ("twiddle", "frob", "tweak");
g_object_unref (appinfo);
}
int
main (int argc,
char *argv[])
@ -390,6 +467,7 @@ main (int argc,
g_test_add_func ("/desktop-app-info/fallback", test_fallback);
g_test_add_func ("/desktop-app-info/lastused", test_last_used);
g_test_add_func ("/desktop-app-info/extra-getters", test_extra_getters);
g_test_add_func ("/desktop-app-info/actions", test_actions);
result = g_test_run ();

1
glib/gkeyfile.h
View File

@ -306,6 +306,7 @@ gboolean g_key_file_remove_group (GKeyFile *key_file,
#define G_KEY_FILE_DESKTOP_KEY_STARTUP_WM_CLASS "StartupWMClass"
#define G_KEY_FILE_DESKTOP_KEY_URL "URL"
#define G_KEY_FILE_DESKTOP_KEY_DBUS_ACTIVATABLE "DBusActivatable"
#define G_KEY_FILE_DESKTOP_KEY_ACTIONS "Actions"
#define G_KEY_FILE_DESKTOP_TYPE_APPLICATION "Application"
#define G_KEY_FILE_DESKTOP_TYPE_LINK "Link"