/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#include "gappinfo.h"
#include "gappinfoprivate.h"
#include "gcontextspecificgroup.h"
#include "gtask.h"
#include "glibintl.h"
#include <gioerror.h>
#include <gfile.h>
#ifdef G_OS_UNIX
#include "gdbusconnection.h"
#include "gdbusmessage.h"
#include "gportalsupport.h"
#include "gunixfdlist.h"
#include "gopenuriportal.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#endif
/**
* SECTION:gappinfo
* @short_description: Application information and launch contexts
* @include: gio/gio.h
* @see_also: #GAppInfoMonitor
*
* #GAppInfo and #GAppLaunchContext are used for describing and launching
* applications installed on the system.
*
* As of GLib 2.20, URIs will always be converted to POSIX paths
* (using g_file_get_path()) when using g_app_info_launch() even if
* the application requested an URI and not a POSIX path. For example
* for an desktop-file based application with Exec key `totem
* %U` and a single URI, `sftp://foo/file.avi`, then
* `/home/user/.gvfs/sftp on foo/file.avi` will be passed. This will
* only work if a set of suitable GIO extensions (such as gvfs 2.26
* compiled with FUSE support), is available and operational; if this
* is not the case, the URI will be passed unmodified to the application.
* Some URIs, such as `mailto:`, of course cannot be mapped to a POSIX
* path (in gvfs there's no FUSE mount for it); such URIs will be
* passed unmodified to the application.
*
* Specifically for gvfs 2.26 and later, the POSIX URI will be mapped
* back to the GIO URI in the #GFile constructors (since gvfs
* implements the #GVfs extension point). As such, if the application
* needs to examine the URI, it needs to use g_file_get_uri() or
* similar on #GFile. In other words, an application cannot assume
* that the URI passed to e.g. g_file_new_for_commandline_arg() is
* equal to the result of g_file_get_uri(). The following snippet
* illustrates this:
*
* |[
* GFile *f;
* char *uri;
*
* file = g_file_new_for_commandline_arg (uri_from_commandline);
*
* uri = g_file_get_uri (file);
* strcmp (uri, uri_from_commandline) == 0;
* g_free (uri);
*
* if (g_file_has_uri_scheme (file, "cdda"))
* {
* // do something special with uri
* }
* g_object_unref (file);
* ]|
*
* This code will work when both `cdda://sr0/Track 1.wav` and
* `/home/user/.gvfs/cdda on sr0/Track 1.wav` is passed to the
* application. It should be noted that it's generally not safe
* for applications to rely on the format of a particular URIs.
* Different launcher applications (e.g. file managers) may have
* different ideas of what a given URI means.
*/
struct _GAppLaunchContextPrivate {
char **envp;
};
typedef GAppInfoIface GAppInfoInterface;
G_DEFINE_INTERFACE (GAppInfo, g_app_info, G_TYPE_OBJECT)
static void
g_app_info_default_init (GAppInfoInterface *iface)
{
}
/**
* g_app_info_dup:
* @appinfo: a #GAppInfo.
*
* Creates a duplicate of a #GAppInfo.
*
* Returns: (transfer full): a duplicate of @appinfo.
**/
GAppInfo *
g_app_info_dup (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->dup) (appinfo);
}
/**
* g_app_info_equal:
* @appinfo1: the first #GAppInfo.
* @appinfo2: the second #GAppInfo.
*
* Checks if two #GAppInfos are equal.
*
* Note that the check <emphasis>may not</emphasis> compare each individual
* field, and only does an identity check. In case detecting changes in the
* contents is needed, program code must additionally compare relevant fields.
*
* Returns: %TRUE if @appinfo1 is equal to @appinfo2. %FALSE otherwise.
**/
gboolean
g_app_info_equal (GAppInfo *appinfo1,
GAppInfo *appinfo2)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo1), FALSE);
g_return_val_if_fail (G_IS_APP_INFO (appinfo2), FALSE);
if (G_TYPE_FROM_INSTANCE (appinfo1) != G_TYPE_FROM_INSTANCE (appinfo2))
return FALSE;
iface = G_APP_INFO_GET_IFACE (appinfo1);
return (* iface->equal) (appinfo1, appinfo2);
}
/**
* g_app_info_get_id:
* @appinfo: a #GAppInfo.
*
* Gets the ID of an application. An id is a string that
* identifies the application. The exact format of the id is
* platform dependent. For instance, on Unix this is the
* desktop file id from the xdg menu specification.
*
* Note that the returned ID may be %NULL, depending on how
* the @appinfo has been constructed.
*
* Returns: a string containing the application's ID.
**/
const char *
g_app_info_get_id (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->get_id) (appinfo);
}
/**
* g_app_info_get_name:
* @appinfo: a #GAppInfo.
*
* Gets the installed name of the application.
*
* Returns: the name of the application for @appinfo.
**/
const char *
g_app_info_get_name (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->get_name) (appinfo);
}
/**
* g_app_info_get_display_name:
* @appinfo: a #GAppInfo.
*
* Gets the display name of the application. The display name is often more
* descriptive to the user than the name itself.
*
* Returns: the display name of the application for @appinfo, or the name if
* no display name is available.
*
* Since: 2.24
**/
const char *
g_app_info_get_display_name (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->get_display_name == NULL)
return (* iface->get_name) (appinfo);
return (* iface->get_display_name) (appinfo);
}
/**
* g_app_info_get_description:
* @appinfo: a #GAppInfo.
*
* Gets a human-readable description of an installed application.
*
* Returns: a string containing a description of the
* application @appinfo, or %NULL if none.
**/
const char *
g_app_info_get_description (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->get_description) (appinfo);
}
/**
* g_app_info_get_executable:
* @appinfo: a #GAppInfo
*
* Gets the executable's name for the installed application.
*
* Returns: (type filename): a string containing the @appinfo's application
* binaries name
**/
const char *
g_app_info_get_executable (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->get_executable) (appinfo);
}
/**
* g_app_info_get_commandline:
* @appinfo: a #GAppInfo
*
* Gets the commandline with which the application will be
* started.
*
* Returns: (type filename): a string containing the @appinfo's commandline,
* or %NULL if this information is not available
*
* Since: 2.20
**/
const char *
g_app_info_get_commandline (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->get_commandline)
return (* iface->get_commandline) (appinfo);
return NULL;
}
/**
* g_app_info_set_as_default_for_type:
* @appinfo: a #GAppInfo.
* @content_type: the content type.
* @error: a #GError.
*
* Sets the application as the default handler for a given type.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_set_as_default_for_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
g_return_val_if_fail (content_type != NULL, FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->set_as_default_for_type) (appinfo, content_type, error);
}
/**
* g_app_info_set_as_last_used_for_type:
* @appinfo: a #GAppInfo.
* @content_type: the content type.
* @error: a #GError.
*
* Sets the application as the last used application for a given type.
* This will make the application appear as first in the list returned
* by g_app_info_get_recommended_for_type(), regardless of the default
* application for that content type.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_set_as_last_used_for_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
g_return_val_if_fail (content_type != NULL, FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->set_as_last_used_for_type) (appinfo, content_type, error);
}
/**
* g_app_info_set_as_default_for_extension:
* @appinfo: a #GAppInfo.
* @extension: (type filename): a string containing the file extension
* (without the dot).
* @error: a #GError.
*
* Sets the application as the default handler for the given file extension.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_set_as_default_for_extension (GAppInfo *appinfo,
const char *extension,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
g_return_val_if_fail (extension != NULL, FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->set_as_default_for_extension)
return (* iface->set_as_default_for_extension) (appinfo, extension, error);
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
"g_app_info_set_as_default_for_extension not supported yet");
return FALSE;
}
/**
* g_app_info_add_supports_type:
* @appinfo: a #GAppInfo.
* @content_type: a string.
* @error: a #GError.
*
* Adds a content type to the application information to indicate the
* application is capable of opening files with the given content type.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_add_supports_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
g_return_val_if_fail (content_type != NULL, FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->add_supports_type)
return (* iface->add_supports_type) (appinfo, content_type, error);
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
"g_app_info_add_supports_type not supported yet");
return FALSE;
}
/**
* g_app_info_can_remove_supports_type:
* @appinfo: a #GAppInfo.
*
* Checks if a supported content type can be removed from an application.
*
* Returns: %TRUE if it is possible to remove supported
* content types from a given @appinfo, %FALSE if not.
**/
gboolean
g_app_info_can_remove_supports_type (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->can_remove_supports_type)
return (* iface->can_remove_supports_type) (appinfo);
return FALSE;
}
/**
* g_app_info_remove_supports_type:
* @appinfo: a #GAppInfo.
* @content_type: a string.
* @error: a #GError.
*
* Removes a supported type from an application, if possible.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_remove_supports_type (GAppInfo *appinfo,
const char *content_type,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
g_return_val_if_fail (content_type != NULL, FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->remove_supports_type)
return (* iface->remove_supports_type) (appinfo, content_type, error);
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
"g_app_info_remove_supports_type not supported yet");
return FALSE;
}
/**
* g_app_info_get_supported_types:
* @appinfo: a #GAppInfo that can handle files
*
* Retrieves the list of content types that @app_info claims to support.
* If this information is not provided by the environment, this function
* will return %NULL.
* This function does not take in consideration associations added with
* g_app_info_add_supports_type(), but only those exported directly by
* the application.
*
* Returns: (transfer none) (array zero-terminated=1) (element-type utf8):
* a list of content types.
*
* Since: 2.34
*/
const char **
g_app_info_get_supported_types (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->get_supported_types)
return iface->get_supported_types (appinfo);
else
return NULL;
}
/**
* g_app_info_get_icon:
* @appinfo: a #GAppInfo.
*
* Gets the icon for the application.
*
* Returns: (transfer none): the default #GIcon for @appinfo or %NULL
* if there is no default icon.
**/
GIcon *
g_app_info_get_icon (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), NULL);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->get_icon) (appinfo);
}
/**
* g_app_info_launch:
* @appinfo: a #GAppInfo
* @files: (nullable) (element-type GFile): a #GList of #GFile objects
* @context: (nullable): a #GAppLaunchContext or %NULL
* @error: a #GError
*
* Launches the application. Passes @files to the launched application
* as arguments, using the optional @context to get information
* about the details of the launcher (like what screen it is on).
* On error, @error will be set accordingly.
*
* To launch the application without arguments pass a %NULL @files list.
*
* Note that even if the launch is successful the application launched
* can fail to start if it runs into problems during startup. There is
* no way to detect this.
*
* Some URIs can be changed when passed through a GFile (for instance
* unsupported URIs with strange formats like mailto:), so if you have
* a textual URI you want to pass in as argument, consider using
* g_app_info_launch_uris() instead.
*
* The launched application inherits the environment of the launching
* process, but it can be modified with g_app_launch_context_setenv()
* and g_app_launch_context_unsetenv().
*
* On UNIX, this function sets the `GIO_LAUNCHED_DESKTOP_FILE`
* environment variable with the path of the launched desktop file and
* `GIO_LAUNCHED_DESKTOP_FILE_PID` to the process id of the launched
* process. This can be used to ignore `GIO_LAUNCHED_DESKTOP_FILE`,
* should it be inherited by further processes. The `DISPLAY` and
* `DESKTOP_STARTUP_ID` environment variables are also set, based
* on information provided in @context.
*
* Returns: %TRUE on successful launch, %FALSE otherwise.
**/
gboolean
g_app_info_launch (GAppInfo *appinfo,
GList *files,
GAppLaunchContext *launch_context,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->launch) (appinfo, files, launch_context, error);
}
/**
* g_app_info_supports_uris:
* @appinfo: a #GAppInfo.
*
* Checks if the application supports reading files and directories from URIs.
*
* Returns: %TRUE if the @appinfo supports URIs.
**/
gboolean
g_app_info_supports_uris (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->supports_uris) (appinfo);
}
/**
* g_app_info_supports_files:
* @appinfo: a #GAppInfo.
*
* Checks if the application accepts files as arguments.
*
* Returns: %TRUE if the @appinfo supports files.
**/
gboolean
g_app_info_supports_files (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->supports_files) (appinfo);
}
/**
* g_app_info_launch_uris:
* @appinfo: a #GAppInfo
* @uris: (nullable) (element-type utf8): a #GList containing URIs to launch.
* @context: (nullable): a #GAppLaunchContext or %NULL
* @error: a #GError
*
* Launches the application. This passes the @uris to the launched application
* as arguments, using the optional @context to get information
* about the details of the launcher (like what screen it is on).
* On error, @error will be set accordingly.
*
* To launch the application without arguments pass a %NULL @uris list.
*
* Note that even if the launch is successful the application launched
* can fail to start if it runs into problems during startup. There is
* no way to detect this.
*
* Returns: %TRUE on successful launch, %FALSE otherwise.
**/
gboolean
g_app_info_launch_uris (GAppInfo *appinfo,
GList *uris,
GAppLaunchContext *launch_context,
GError **error)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->launch_uris) (appinfo, uris, launch_context, error);
}
/**
* g_app_info_should_show:
* @appinfo: a #GAppInfo.
*
* Checks if the application info should be shown in menus that
* list available applications.
*
* Returns: %TRUE if the @appinfo should be shown, %FALSE otherwise.
**/
gboolean
g_app_info_should_show (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
return (* iface->should_show) (appinfo);
}
static gboolean
launch_default_for_uri (const char *uri,
GAppLaunchContext *context,
GError **error)
{
char *uri_scheme;
GAppInfo *app_info = NULL;
GList l;
gboolean res;
/* g_file_query_default_handler() calls
* g_app_info_get_default_for_uri_scheme() too, but we have to do it
* here anyway in case GFile can't parse @uri correctly.
*/
uri_scheme = g_uri_parse_scheme (uri);
if (uri_scheme && uri_scheme[0] != '\0')
app_info = g_app_info_get_default_for_uri_scheme (uri_scheme);
g_free (uri_scheme);
if (!app_info)
{
GFile *file;
file = g_file_new_for_uri (uri);
app_info = g_file_query_default_handler (file, NULL, error);
g_object_unref (file);
}
if (app_info == NULL)
return FALSE;
l.data = (char *)uri;
l.next = l.prev = NULL;
res = g_app_info_launch_uris (app_info, &l, context, error);
g_object_unref (app_info);
return res;
}
/**
* g_app_info_launch_default_for_uri:
* @uri: the uri to show
* @context: (nullable): an optional #GAppLaunchContext
* @error: (nullable): return location for an error, or %NULL
*
* Utility function that launches the default application
* registered to handle the specified uri. Synchronous I/O
* is done on the uri to detect the type of the file if
* required.
*
* Returns: %TRUE on success, %FALSE on error.
**/
gboolean
g_app_info_launch_default_for_uri (const char *uri,
GAppLaunchContext *launch_context,
GError **error)
{
if (launch_default_for_uri (uri, launch_context, error))
return TRUE;
#ifdef G_OS_UNIX
if (glib_should_use_portal ())
{
const char *parent_window = NULL;
/* Reset any error previously set by launch_default_for_uri */
g_clear_error (error);
if (launch_context && launch_context->priv->envp)
parent_window = g_environ_getenv (launch_context->priv->envp, "PARENT_WINDOW_ID");
return g_openuri_portal_open_uri (uri, parent_window, error);
}
#endif
return FALSE;
}
/**
* g_app_info_launch_default_for_uri_async:
* @uri: the uri to show
* @context: (nullable): an optional #GAppLaunchContext
* @cancellable: (nullable): a #GCancellable
* @callback: (nullable): a #GASyncReadyCallback to call when the request is done
* @user_data: (nullable): data to pass to @callback
*
* Async version of g_app_info_launch_default_for_uri().
*
* This version is useful if you are interested in receiving
* error information in the case where the application is
* sandboxed and the portal may present an application chooser
* dialog to the user.
*
* Since: 2.50
*/
void
g_app_info_launch_default_for_uri_async (const char *uri,
GAppLaunchContext *context,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
gboolean res;
GError *error = NULL;
GTask *task;
res = launch_default_for_uri (uri, context, &error);
#ifdef G_OS_UNIX
if (!res && glib_should_use_portal ())
{
const char *parent_window = NULL;
if (context && context->priv->envp)
parent_window = g_environ_getenv (context->priv->envp, "PARENT_WINDOW_ID");
g_openuri_portal_open_uri_async (uri, parent_window, cancellable, callback, user_data);
return;
}
#endif
task = g_task_new (context, cancellable, callback, user_data);
if (!res)
g_task_return_error (task, error);
else
g_task_return_boolean (task, TRUE);
g_object_unref (task);
}
/**
* g_app_info_launch_default_for_uri_finish:
* @result: a #GAsyncResult
* @error: (nullable): return location for an error, or %NULL
*
* Finishes an asynchronous launch-default-for-uri operation.
*
* Returns: %TRUE if the launch was successful, %FALSE if @error is set
*
* Since: 2.50
*/
gboolean
g_app_info_launch_default_for_uri_finish (GAsyncResult *result,
GError **error)
{
#ifdef G_OS_UNIX
return g_openuri_portal_open_uri_finish (result, error);
#else
return g_task_propagate_boolean (G_TASK (result), error);
#endif
}
/**
* g_app_info_can_delete:
* @appinfo: a #GAppInfo
*
* Obtains the information whether the #GAppInfo can be deleted.
* See g_app_info_delete().
*
* Returns: %TRUE if @appinfo can be deleted
*
* Since: 2.20
*/
gboolean
g_app_info_can_delete (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->can_delete)
return (* iface->can_delete) (appinfo);
return FALSE;
}
/**
* g_app_info_delete:
* @appinfo: a #GAppInfo
*
* Tries to delete a #GAppInfo.
*
* On some platforms, there may be a difference between user-defined
* #GAppInfos which can be deleted, and system-wide ones which cannot.
* See g_app_info_can_delete().
*
* Virtual: do_delete
* Returns: %TRUE if @appinfo has been deleted
*
* Since: 2.20
*/
gboolean
g_app_info_delete (GAppInfo *appinfo)
{
GAppInfoIface *iface;
g_return_val_if_fail (G_IS_APP_INFO (appinfo), FALSE);
iface = G_APP_INFO_GET_IFACE (appinfo);
if (iface->do_delete)
return (* iface->do_delete) (appinfo);
return FALSE;
}
enum {
LAUNCH_FAILED,
LAUNCHED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
G_DEFINE_TYPE_WITH_PRIVATE (GAppLaunchContext, g_app_launch_context, G_TYPE_OBJECT)
/**
* g_app_launch_context_new:
*
* Creates a new application launch context. This is not normally used,
* instead you instantiate a subclass of this, such as #GdkAppLaunchContext.
*
* Returns: a #GAppLaunchContext.
**/
GAppLaunchContext *
g_app_launch_context_new (void)
{
return g_object_new (G_TYPE_APP_LAUNCH_CONTEXT, NULL);
}
static void
g_app_launch_context_finalize (GObject *object)
{
GAppLaunchContext *context = G_APP_LAUNCH_CONTEXT (object);
g_strfreev (context->priv->envp);
G_OBJECT_CLASS (g_app_launch_context_parent_class)->finalize (object);
}
static void
g_app_launch_context_class_init (GAppLaunchContextClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = g_app_launch_context_finalize;
/**
* GAppLaunchContext::launch-failed:
* @context: the object emitting the signal
* @startup_notify_id: the startup notification id for the failed launch
*
* The ::launch-failed signal is emitted when a #GAppInfo launch
* fails. The startup notification id is provided, so that the launcher
* can cancel the startup notification.
*
* Since: 2.36
*/
signals[LAUNCH_FAILED] = g_signal_new (I_("launch-failed"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GAppLaunchContextClass, launch_failed),
NULL, NULL, NULL,
G_TYPE_NONE, 1, G_TYPE_STRING);
/**
* GAppLaunchContext::launched:
* @context: the object emitting the signal
* @info: the #GAppInfo that was just launched
* @platform_data: additional platform-specific data for this launch
*
* The ::launched signal is emitted when a #GAppInfo is successfully
* launched. The @platform_data is an GVariant dictionary mapping
* strings to variants (ie a{sv}), which contains additional,
* platform-specific data about this launch. On UNIX, at least the
* "pid" and "startup-notification-id" keys will be present.
*
* Since: 2.36
*/
signals[LAUNCHED] = g_signal_new (I_("launched"),
G_OBJECT_CLASS_TYPE (object_class),
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GAppLaunchContextClass, launched),
NULL, NULL, NULL,
G_TYPE_NONE, 2,
G_TYPE_APP_INFO, G_TYPE_VARIANT);
}
static void
g_app_launch_context_init (GAppLaunchContext *context)
{
context->priv = g_app_launch_context_get_instance_private (context);
}
/**
* g_app_launch_context_setenv:
* @context: a #GAppLaunchContext
* @variable: (type filename): the environment variable to set
* @value: (type filename): the value for to set the variable to.
*
* Arranges for @variable to be set to @value in the child's
* environment when @context is used to launch an application.
*
* Since: 2.32
*/
void
g_app_launch_context_setenv (GAppLaunchContext *context,
const char *variable,
const char *value)
{
if (!context->priv->envp)
context->priv->envp = g_get_environ ();
context->priv->envp =
g_environ_setenv (context->priv->envp, variable, value, TRUE);
}
/**
* g_app_launch_context_unsetenv:
* @context: a #GAppLaunchContext
* @variable: (type filename): the environment variable to remove
*
* Arranges for @variable to be unset in the child's environment
* when @context is used to launch an application.
*
* Since: 2.32
*/
void
g_app_launch_context_unsetenv (GAppLaunchContext *context,
const char *variable)
{
if (!context->priv->envp)
context->priv->envp = g_get_environ ();
context->priv->envp =
g_environ_unsetenv (context->priv->envp, variable);
}
/**
* g_app_launch_context_get_environment:
* @context: a #GAppLaunchContext
*
* Gets the complete environment variable list to be passed to
* the child process when @context is used to launch an application.
* This is a %NULL-terminated array of strings, where each string has
* the form `KEY=VALUE`.
*
* Returns: (array zero-terminated=1) (element-type filename) (transfer full):
* the child's environment
*
* Since: 2.32
*/
char **
g_app_launch_context_get_environment (GAppLaunchContext *context)
{
if (!context->priv->envp)
context->priv->envp = g_get_environ ();
return g_strdupv (context->priv->envp);
}
/**
* g_app_launch_context_get_display:
* @context: a #GAppLaunchContext
* @info: a #GAppInfo
* @files: (element-type GFile): a #GList of #GFile objects
*
* Gets the display string for the @context. This is used to ensure new
* applications are started on the same display as the launching
* application, by setting the `DISPLAY` environment variable.
*
* Returns: a display string for the display.
*/
char *
g_app_launch_context_get_display (GAppLaunchContext *context,
GAppInfo *info,
GList *files)
{
GAppLaunchContextClass *class;
g_return_val_if_fail (G_IS_APP_LAUNCH_CONTEXT (context), NULL);
g_return_val_if_fail (G_IS_APP_INFO (info), NULL);
class = G_APP_LAUNCH_CONTEXT_GET_CLASS (context);
if (class->get_display == NULL)
return NULL;
return class->get_display (context, info, files);
}
/**
* g_app_launch_context_get_startup_notify_id:
* @context: a #GAppLaunchContext
* @info: a #GAppInfo
* @files: (element-type GFile): a #GList of of #GFile objects
*
* Initiates startup notification for the application and returns the
* `DESKTOP_STARTUP_ID` for the launched operation, if supported.
*
* Startup notification IDs are defined in the
* [FreeDesktop.Org Startup Notifications standard](http://standards.freedesktop.org/startup-notification-spec/startup-notification-latest.txt").
*
* Returns: a startup notification ID for the application, or %NULL if
* not supported.
**/
char *
g_app_launch_context_get_startup_notify_id (GAppLaunchContext *context,
GAppInfo *info,
GList *files)
{
GAppLaunchContextClass *class;
g_return_val_if_fail (G_IS_APP_LAUNCH_CONTEXT (context), NULL);
g_return_val_if_fail (G_IS_APP_INFO (info), NULL);
class = G_APP_LAUNCH_CONTEXT_GET_CLASS (context);
if (class->get_startup_notify_id == NULL)
return NULL;
return class->get_startup_notify_id (context, info, files);
}
/**
* g_app_launch_context_launch_failed:
* @context: a #GAppLaunchContext.
* @startup_notify_id: the startup notification id that was returned by g_app_launch_context_get_startup_notify_id().
*
* Called when an application has failed to launch, so that it can cancel
* the application startup notification started in g_app_launch_context_get_startup_notify_id().
*
**/
void
g_app_launch_context_launch_failed (GAppLaunchContext *context,
const char *startup_notify_id)
{
g_return_if_fail (G_IS_APP_LAUNCH_CONTEXT (context));
g_return_if_fail (startup_notify_id != NULL);
g_signal_emit (context, signals[LAUNCH_FAILED], 0, startup_notify_id);
}
/**
* SECTION:gappinfomonitor
* @short_description: Monitor application information for changes
*
* #GAppInfoMonitor is a very simple object used for monitoring the app
* info database for changes (ie: newly installed or removed
* applications).
*
* Call g_app_info_monitor_get() to get a #GAppInfoMonitor and connect
* to the "changed" signal.
*
* In the usual case, applications should try to make note of the change
* (doing things like invalidating caches) but not act on it. In
* particular, applications should avoid making calls to #GAppInfo APIs
* in response to the change signal, deferring these until the time that
* the data is actually required. The exception to this case is when
* application information is actually being displayed on the screen
* (eg: during a search or when the list of all applications is shown).
* The reason for this is that changes to the list of installed
* applications often come in groups (like during system updates) and
* rescanning the list on every change is pointless and expensive.
*
* Since: 2.40
**/
/**
* GAppInfoMonitor:
*
* The only thing you can do with this is to get it via
* g_app_info_monitor_get() and connect to the "changed" signal.
*
* Since: 2.40
**/
typedef struct _GAppInfoMonitorClass GAppInfoMonitorClass;
struct _GAppInfoMonitor
{
GObject parent_instance;
GMainContext *context;
};
struct _GAppInfoMonitorClass
{
GObjectClass parent_class;
};
static GContextSpecificGroup g_app_info_monitor_group;
static guint g_app_info_monitor_changed_signal;
G_DEFINE_TYPE (GAppInfoMonitor, g_app_info_monitor, G_TYPE_OBJECT)
static void
g_app_info_monitor_finalize (GObject *object)
{
GAppInfoMonitor *monitor = G_APP_INFO_MONITOR (object);
g_context_specific_group_remove (&g_app_info_monitor_group, monitor->context, monitor, NULL);
G_OBJECT_CLASS (g_app_info_monitor_parent_class)->finalize (object);
}
static void
g_app_info_monitor_init (GAppInfoMonitor *monitor)
{
}
static void
g_app_info_monitor_class_init (GAppInfoMonitorClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
/**
* GAppInfoMonitor::changed:
*
* Signal emitted when the app info database for changes (ie: newly installed
* or removed applications).
**/
g_app_info_monitor_changed_signal = g_signal_new (I_("changed"), G_TYPE_APP_INFO_MONITOR, G_SIGNAL_RUN_FIRST,
0, NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
object_class->finalize = g_app_info_monitor_finalize;
}
/**
* g_app_info_monitor_get:
*
* Gets the #GAppInfoMonitor for the current thread-default main
* context.
*
* The #GAppInfoMonitor will emit a "changed" signal in the
* thread-default main context whenever the list of installed
* applications (as reported by g_app_info_get_all()) may have changed.
*
* You must only call g_object_unref() on the return value from under
* the same main context as you created it.
*
* Returns: (transfer full): a reference to a #GAppInfoMonitor
*
* Since: 2.40
**/
GAppInfoMonitor *
g_app_info_monitor_get (void)
{
return g_context_specific_group_get (&g_app_info_monitor_group,
G_TYPE_APP_INFO_MONITOR,
G_STRUCT_OFFSET (GAppInfoMonitor, context),
NULL);
}
void
g_app_info_monitor_fire (void)
{
g_context_specific_group_emit (&g_app_info_monitor_group, g_app_info_monitor_changed_signal);
}