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gtk2/gtk/gtkapplication.c
William Jon McCann 8e96488bb2 Don't crash if inhibit is called with an unrealized window
2013-02-15 16:56:06 -05:00

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/*
* Copyright © 2010 Codethink Limited
*
* 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 of the licence, 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: Ryan Lortie <desrt@desrt.ca>
*/
#include "config.h"
#include "gtkapplication.h"
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <string.h>
#include "gtkapplicationprivate.h"
#include "gtkclipboard.h"
#include "gtkmarshalers.h"
#include "gtkmain.h"
#include "gtkrecentmanager.h"
#include "gtkaccelmapprivate.h"
#include "gtkintl.h"
#ifdef GDK_WINDOWING_QUARTZ
#include "gtkmodelmenu-quartz.h"
#import <Cocoa/Cocoa.h>
#include <Carbon/Carbon.h>
#include "gtkmessagedialog.h"
#endif
#include <gdk/gdk.h>
#ifdef GDK_WINDOWING_X11
#include <gdk/x11/gdkx.h>
#endif
extern void _gtk_accessibility_shutdown (void);
/**
* SECTION:gtkapplication
* @title: GtkApplication
* @short_description: Application class
*
* #GtkApplication is a class that handles many important aspects
* of a GTK+ application in a convenient fashion, without enforcing
* a one-size-fits-all application model.
*
* Currently, GtkApplication handles GTK+ initialization, application
* uniqueness, session management, provides some basic scriptability and
* desktop shell integration by exporting actions and menus and manages a
* list of toplevel windows whose life-cycle is automatically tied to the
* life-cycle of your application.
*
* While GtkApplication works fine with plain #GtkWindows, it is recommended
* to use it together with #GtkApplicationWindow.
*
* When GDK threads are enabled, GtkApplication will acquire the GDK
* lock when invoking actions that arrive from other processes. The GDK
* lock is not touched for local action invocations. In order to have
* actions invoked in a predictable context it is therefore recommended
* that the GDK lock be held while invoking actions locally with
* g_action_group_activate_action(). The same applies to actions
* associated with #GtkApplicationWindow and to the 'activate' and
* 'open' #GApplication methods.
*
* To set an application menu for a GtkApplication, use
* gtk_application_set_app_menu(). The #GMenuModel that this function
* expects is usually constructed using #GtkBuilder, as seen in the
* following example. To specify a menubar that will be shown by
* #GtkApplicationWindows, use gtk_application_set_menubar(). Use the base
* #GActionMap interface to add actions, to respond to the user
* selecting these menu items.
*
* GTK+ displays these menus as expected, depending on the platform
* the application is running on.
*
* <figure label="Menu integration in OS X">
* <graphic fileref="bloatpad-osx.png" format="PNG"/>
* </figure>
*
* <figure label="Menu integration in GNOME">
* <graphic fileref="bloatpad-gnome.png" format="PNG"/>
* </figure>
*
* <figure label="Menu integration in Xfce">
* <graphic fileref="bloatpad-xfce.png" format="PNG"/>
* </figure>
*
* <example id="gtkapplication"><title>A simple application</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/bloatpad.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*
* GtkApplication optionally registers with a session manager
* of the users session (if you set the #GtkApplication:register-session
* property) and offers various functionality related to the session
* life-cycle.
*
* An application can block various ways to end the session with
* the gtk_application_inhibit() function. Typical use cases for
* this kind of inhibiting are long-running, uninterruptible operations,
* such as burning a CD or performing a disk backup. The session
* manager may not honor the inhibitor, but it can be expected to
* inform the user about the negative consequences of ending the
* session while inhibitors are present.
*/
enum {
WINDOW_ADDED,
WINDOW_REMOVED,
LAST_SIGNAL
};
static guint gtk_application_signals[LAST_SIGNAL];
enum {
PROP_ZERO,
PROP_REGISTER_SESSION,
PROP_APP_MENU,
PROP_MENUBAR,
PROP_ACTIVE_WINDOW
};
G_DEFINE_TYPE (GtkApplication, gtk_application, G_TYPE_APPLICATION)
struct _GtkApplicationPrivate
{
GList *windows;
gboolean register_session;
GMenuModel *app_menu;
GMenuModel *menubar;
#ifdef GDK_WINDOWING_X11
GDBusConnection *session_bus;
const gchar *application_id;
const gchar *object_path;
gchar *app_menu_path;
guint app_menu_id;
gchar *menubar_path;
guint menubar_id;
guint next_id;
GDBusProxy *sm_proxy;
GDBusProxy *client_proxy;
gchar *app_id;
gchar *client_path;
#endif
#ifdef GDK_WINDOWING_QUARTZ
GMenu *combined;
GSList *inhibitors;
gint quit_inhibit;
guint next_cookie;
#endif
};
#ifdef GDK_WINDOWING_X11
static void
gtk_application_x11_publish_menu (GtkApplication *application,
const gchar *type,
GMenuModel *model,
guint *id,
gchar **path)
{
gint i;
if (application->priv->session_bus == NULL)
return;
/* unexport any existing menu */
if (*id)
{
g_dbus_connection_unexport_menu_model (application->priv->session_bus, *id);
g_free (*path);
*path = NULL;
*id = 0;
}
/* export the new menu, if there is one */
if (model != NULL)
{
/* try getting the preferred name */
*path = g_strconcat (application->priv->object_path, "/menus/", type, NULL);
*id = g_dbus_connection_export_menu_model (application->priv->session_bus, *path, model, NULL);
/* keep trying until we get a working name... */
for (i = 0; *id == 0; i++)
{
g_free (*path);
*path = g_strdup_printf ("%s/menus/%s%d", application->priv->object_path, type, i);
*id = g_dbus_connection_export_menu_model (application->priv->session_bus, *path, model, NULL);
}
}
}
static void
gtk_application_set_app_menu_x11 (GtkApplication *application,
GMenuModel *app_menu)
{
gtk_application_x11_publish_menu (application, "appmenu", app_menu,
&application->priv->app_menu_id,
&application->priv->app_menu_path);
}
static void
gtk_application_set_menubar_x11 (GtkApplication *application,
GMenuModel *menubar)
{
gtk_application_x11_publish_menu (application, "menubar", menubar,
&application->priv->menubar_id,
&application->priv->menubar_path);
}
static void
gtk_application_window_added_x11 (GtkApplication *application,
GtkWindow *window)
{
if (application->priv->session_bus == NULL)
return;
if (GTK_IS_APPLICATION_WINDOW (window))
{
GtkApplicationWindow *app_window = GTK_APPLICATION_WINDOW (window);
gboolean success;
/* GtkApplicationWindow associates with us when it is first created,
* so surely it's not realized yet...
*/
g_assert (!gtk_widget_get_realized (GTK_WIDGET (window)));
do
{
gchar *window_path;
guint window_id;
window_id = application->priv->next_id++;
window_path = g_strdup_printf ("%s/window/%u", application->priv->object_path, window_id);
success = gtk_application_window_publish (app_window, application->priv->session_bus, window_path, window_id);
g_free (window_path);
}
while (!success);
}
}
static void
gtk_application_window_removed_x11 (GtkApplication *application,
GtkWindow *window)
{
if (application->priv->session_bus == NULL)
return;
if (GTK_IS_APPLICATION_WINDOW (window))
gtk_application_window_unpublish (GTK_APPLICATION_WINDOW (window));
}
static void gtk_application_startup_session_dbus (GtkApplication *app);
static void
gtk_application_startup_x11 (GtkApplication *application)
{
application->priv->session_bus = g_application_get_dbus_connection (G_APPLICATION (application));
application->priv->object_path = g_application_get_dbus_object_path (G_APPLICATION (application));
gtk_application_startup_session_dbus (GTK_APPLICATION (application));
}
static void
gtk_application_shutdown_x11 (GtkApplication *application)
{
gtk_application_set_app_menu_x11 (application, NULL);
gtk_application_set_menubar_x11 (application, NULL);
application->priv->session_bus = NULL;
application->priv->object_path = NULL;
g_clear_object (&application->priv->sm_proxy);
g_clear_object (&application->priv->client_proxy);
g_free (application->priv->app_id);
g_free (application->priv->client_path);
}
const gchar *
gtk_application_get_app_menu_object_path (GtkApplication *application)
{
return application->priv->app_menu_path;
}
const gchar *
gtk_application_get_menubar_object_path (GtkApplication *application)
{
return application->priv->menubar_path;
}
#endif
#ifdef GDK_WINDOWING_QUARTZ
typedef struct {
guint cookie;
GtkApplicationInhibitFlags flags;
char *reason;
GtkWindow *window;
} GtkApplicationQuartzInhibitor;
static void
gtk_application_quartz_inhibitor_free (GtkApplicationQuartzInhibitor *inhibitor)
{
g_free (inhibitor->reason);
g_clear_object (&inhibitor->window);
g_slice_free (GtkApplicationQuartzInhibitor, inhibitor);
}
static void
gtk_application_menu_changed_quartz (GObject *object,
GParamSpec *pspec,
gpointer user_data)
{
GtkApplication *application = GTK_APPLICATION (object);
GMenu *combined;
combined = g_menu_new ();
g_menu_append_submenu (combined, "Application", gtk_application_get_app_menu (application));
g_menu_append_section (combined, NULL, gtk_application_get_menubar (application));
gtk_quartz_set_main_menu (G_MENU_MODEL (combined), application);
g_object_unref (combined);
}
static void gtk_application_startup_session_quartz (GtkApplication *app);
static void
gtk_application_startup_quartz (GtkApplication *application)
{
[NSApp finishLaunching];
g_signal_connect (application, "notify::app-menu", G_CALLBACK (gtk_application_menu_changed_quartz), NULL);
g_signal_connect (application, "notify::menubar", G_CALLBACK (gtk_application_menu_changed_quartz), NULL);
gtk_application_menu_changed_quartz (G_OBJECT (application), NULL, NULL);
gtk_application_startup_session_quartz (application);
}
static void
gtk_application_shutdown_quartz (GtkApplication *application)
{
gtk_quartz_clear_main_menu ();
g_signal_handlers_disconnect_by_func (application, gtk_application_menu_changed_quartz, NULL);
g_slist_free_full (application->priv->inhibitors,
(GDestroyNotify) gtk_application_quartz_inhibitor_free);
application->priv->inhibitors = NULL;
}
#endif
static gboolean
gtk_application_focus_in_event_cb (GtkWindow *window,
GdkEventFocus *event,
GtkApplication *application)
{
GtkApplicationPrivate *priv = application->priv;
GList *link;
/* Keep the window list sorted by most-recently-focused. */
link = g_list_find (priv->windows, window);
if (link != NULL && link != priv->windows)
{
priv->windows = g_list_remove_link (priv->windows, link);
priv->windows = g_list_concat (link, priv->windows);
}
g_object_notify (G_OBJECT (application), "active-window");
return FALSE;
}
static void
gtk_application_startup (GApplication *application)
{
G_APPLICATION_CLASS (gtk_application_parent_class)
->startup (application);
gtk_init (0, 0);
#ifdef GDK_WINDOWING_X11
gtk_application_startup_x11 (GTK_APPLICATION (application));
#endif
#ifdef GDK_WINDOWING_QUARTZ
gtk_application_startup_quartz (GTK_APPLICATION (application));
#endif
}
static void
gtk_application_shutdown (GApplication *application)
{
#ifdef GDK_WINDOWING_X11
gtk_application_shutdown_x11 (GTK_APPLICATION (application));
#endif
#ifdef GDK_WINDOWING_QUARTZ
gtk_application_shutdown_quartz (GTK_APPLICATION (application));
#endif
/* Keep this section in sync with gtk_main() */
/* Try storing all clipboard data we have */
_gtk_clipboard_store_all ();
/* Synchronize the recent manager singleton */
_gtk_recent_manager_sync ();
_gtk_accessibility_shutdown ();
G_APPLICATION_CLASS (gtk_application_parent_class)
->shutdown (application);
}
static void
gtk_application_add_platform_data (GApplication *application,
GVariantBuilder *builder)
{
const gchar *startup_id;
startup_id = getenv ("DESKTOP_STARTUP_ID");
if (startup_id && g_utf8_validate (startup_id, -1, NULL))
g_variant_builder_add (builder, "{sv}", "desktop-startup-id",
g_variant_new_string (startup_id));
}
static void
gtk_application_before_emit (GApplication *application,
GVariant *platform_data)
{
GVariantIter iter;
const gchar *key;
GVariant *value;
gdk_threads_enter ();
g_variant_iter_init (&iter, platform_data);
while (g_variant_iter_loop (&iter, "{&sv}", &key, &value))
{
#ifdef GDK_WINDOWING_X11
if (strcmp (key, "desktop-startup-id") == 0)
{
GdkDisplay *display;
const gchar *id;
display = gdk_display_get_default ();
id = g_variant_get_string (value, NULL);
if (GDK_IS_X11_DISPLAY (display))
gdk_x11_display_set_startup_notification_id (display, id);
}
#endif
}
}
static void
gtk_application_after_emit (GApplication *application,
GVariant *platform_data)
{
gdk_notify_startup_complete ();
gdk_threads_leave ();
}
static void
gtk_application_init (GtkApplication *application)
{
application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application,
GTK_TYPE_APPLICATION,
GtkApplicationPrivate);
#ifdef GDK_WINDOWING_X11
application->priv->next_id = 1;
#endif
}
static void
gtk_application_window_added (GtkApplication *application,
GtkWindow *window)
{
GtkApplicationPrivate *priv = application->priv;
priv->windows = g_list_prepend (priv->windows, window);
gtk_window_set_application (window, application);
g_application_hold (G_APPLICATION (application));
g_signal_connect (window, "focus-in-event",
G_CALLBACK (gtk_application_focus_in_event_cb),
application);
#ifdef GDK_WINDOWING_X11
gtk_application_window_added_x11 (application, window);
#endif
g_object_notify (G_OBJECT (application), "active-window");
}
static void
gtk_application_window_removed (GtkApplication *application,
GtkWindow *window)
{
GtkApplicationPrivate *priv = application->priv;
gpointer old_active;
old_active = priv->windows;
#ifdef GDK_WINDOWING_X11
gtk_application_window_removed_x11 (application, window);
#endif
g_signal_handlers_disconnect_by_func (window,
gtk_application_focus_in_event_cb,
application);
g_application_release (G_APPLICATION (application));
priv->windows = g_list_remove (priv->windows, window);
gtk_window_set_application (window, NULL);
if (priv->windows != old_active)
g_object_notify (G_OBJECT (application), "active-window");
}
static void
extract_accel_from_menu_item (GMenuModel *model,
gint item,
GtkApplication *app)
{
GMenuAttributeIter *iter;
const gchar *key;
GVariant *value;
const gchar *accel = NULL;
const gchar *action = NULL;
GVariant *target = NULL;
iter = g_menu_model_iterate_item_attributes (model, item);
while (g_menu_attribute_iter_get_next (iter, &key, &value))
{
if (g_str_equal (key, "action") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
action = g_variant_get_string (value, NULL);
else if (g_str_equal (key, "accel") && g_variant_is_of_type (value, G_VARIANT_TYPE_STRING))
accel = g_variant_get_string (value, NULL);
else if (g_str_equal (key, "target"))
target = g_variant_ref (value);
g_variant_unref (value);
}
g_object_unref (iter);
if (accel && action)
gtk_application_add_accelerator (app, accel, action, target);
if (target)
g_variant_unref (target);
}
static void
extract_accels_from_menu (GMenuModel *model,
GtkApplication *app)
{
gint i;
GMenuLinkIter *iter;
const gchar *key;
GMenuModel *m;
for (i = 0; i < g_menu_model_get_n_items (model); i++)
{
extract_accel_from_menu_item (model, i, app);
iter = g_menu_model_iterate_item_links (model, i);
while (g_menu_link_iter_get_next (iter, &key, &m))
{
extract_accels_from_menu (m, app);
g_object_unref (m);
}
g_object_unref (iter);
}
}
static void
gtk_application_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkApplication *application = GTK_APPLICATION (object);
switch (prop_id)
{
case PROP_REGISTER_SESSION:
g_value_set_boolean (value, application->priv->register_session);
break;
case PROP_APP_MENU:
g_value_set_object (value, gtk_application_get_app_menu (application));
break;
case PROP_MENUBAR:
g_value_set_object (value, gtk_application_get_menubar (application));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_application_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkApplication *application = GTK_APPLICATION (object);
switch (prop_id)
{
case PROP_REGISTER_SESSION:
application->priv->register_session = g_value_get_boolean (value);
break;
case PROP_APP_MENU:
gtk_application_set_app_menu (application, g_value_get_object (value));
break;
case PROP_MENUBAR:
gtk_application_set_menubar (application, g_value_get_object (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_application_finalize (GObject *object)
{
GtkApplication *application = GTK_APPLICATION (object);
g_clear_object (&application->priv->app_menu);
g_clear_object (&application->priv->menubar);
G_OBJECT_CLASS (gtk_application_parent_class)
->finalize (object);
}
static void
gtk_application_class_init (GtkApplicationClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
GApplicationClass *application_class = G_APPLICATION_CLASS (class);
object_class->get_property = gtk_application_get_property;
object_class->set_property = gtk_application_set_property;
object_class->finalize = gtk_application_finalize;
application_class->add_platform_data = gtk_application_add_platform_data;
application_class->before_emit = gtk_application_before_emit;
application_class->after_emit = gtk_application_after_emit;
application_class->startup = gtk_application_startup;
application_class->shutdown = gtk_application_shutdown;
class->window_added = gtk_application_window_added;
class->window_removed = gtk_application_window_removed;
g_type_class_add_private (class, sizeof (GtkApplicationPrivate));
/**
* GtkApplication::window-added:
* @application: the #GtkApplication which emitted the signal
* @window: the newly-added #GtkWindow
*
* Emitted when a #GtkWindow is added to @application through
* gtk_application_add_window().
*
* Since: 3.2
*/
gtk_application_signals[WINDOW_ADDED] =
g_signal_new ("window-added", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkApplicationClass, window_added),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_WINDOW);
/**
* GtkApplication::window-removed:
* @application: the #GtkApplication which emitted the signal
* @window: the #GtkWindow that is being removed
*
* Emitted when a #GtkWindow is removed from @application,
* either as a side-effect of being destroyed or explicitly
* through gtk_application_remove_window().
*
* Since: 3.2
*/
gtk_application_signals[WINDOW_REMOVED] =
g_signal_new ("window-removed", GTK_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GtkApplicationClass, window_removed),
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_WINDOW);
/**
* GtkApplication:register-session:
*
* Set this property to %TRUE to register with the session manager.
*
* Since: 3.4
*/
g_object_class_install_property (object_class, PROP_REGISTER_SESSION,
g_param_spec_boolean ("register-session",
P_("Register session"),
P_("Register with the session manager"),
FALSE, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_APP_MENU,
g_param_spec_object ("app-menu",
P_("Application menu"),
P_("The GMenuModel for the application menu"),
G_TYPE_MENU_MODEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_MENUBAR,
g_param_spec_object ("menubar",
P_("Menubar"),
P_("The GMenuModel for the menubar"),
G_TYPE_MENU_MODEL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_ACTIVE_WINDOW,
g_param_spec_object ("active-window",
P_("Active window"),
P_("The window which most recently had focus"),
GTK_TYPE_WINDOW,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
}
/**
* gtk_application_new:
* @application_id: (allow-none): The application ID.
* @flags: the application flags
*
* Creates a new #GtkApplication instance.
*
* When using #GtkApplication, it is not necessary to call gtk_init()
* manually. It is called as soon as the application gets registered as
* the primary instance.
*
* Concretely, gtk_init() is called in the default handler for the
* #GApplication::startup signal. Therefore, #GtkApplication subclasses should
* chain up in their #GApplication:startup handler before using any GTK+ API.
*
* Note that commandline arguments are not passed to gtk_init().
* All GTK+ functionality that is available via commandline arguments
* can also be achieved by setting suitable environment variables
* such as <envar>G_DEBUG</envar>, so this should not be a big
* problem. If you absolutely must support GTK+ commandline arguments,
* you can explicitly call gtk_init() before creating the application
* instance.
*
* If non-%NULL, the application ID must be valid. See
* g_application_id_is_valid().
*
* If no application ID is given then some features (most notably application
* uniqueness) will be disabled. A null application ID is only allowed with
* GTK+ 3.6 or later.
*
* Returns: a new #GtkApplication instance
*
* Since: 3.0
*/
GtkApplication *
gtk_application_new (const gchar *application_id,
GApplicationFlags flags)
{
g_return_val_if_fail (application_id == NULL || g_application_id_is_valid (application_id), NULL);
return g_object_new (GTK_TYPE_APPLICATION,
"application-id", application_id,
"flags", flags,
NULL);
}
/**
* gtk_application_add_window:
* @application: a #GtkApplication
* @window: a #GtkWindow
*
* Adds a window to @application.
*
* This call is equivalent to setting the #GtkWindow:application
* property of @window to @application.
*
* Normally, the connection between the application and the window
* will remain until the window is destroyed, but you can explicitly
* remove it with gtk_application_remove_window().
*
* GTK+ will keep the application running as long as it has
* any windows.
*
* Since: 3.0
**/
void
gtk_application_add_window (GtkApplication *application,
GtkWindow *window)
{
g_return_if_fail (GTK_IS_APPLICATION (application));
if (!g_list_find (application->priv->windows, window))
g_signal_emit (application,
gtk_application_signals[WINDOW_ADDED], 0, window);
}
/**
* gtk_application_remove_window:
* @application: a #GtkApplication
* @window: a #GtkWindow
*
* Remove a window from @application.
*
* If @window belongs to @application then this call is equivalent to
* setting the #GtkWindow:application property of @window to
* %NULL.
*
* The application may stop running as a result of a call to this
* function.
*
* Since: 3.0
**/
void
gtk_application_remove_window (GtkApplication *application,
GtkWindow *window)
{
g_return_if_fail (GTK_IS_APPLICATION (application));
if (g_list_find (application->priv->windows, window))
g_signal_emit (application,
gtk_application_signals[WINDOW_REMOVED], 0, window);
}
/**
* gtk_application_get_windows:
* @application: a #GtkApplication
*
* Gets a list of the #GtkWindows associated with @application.
*
* The list is sorted by most recently focused window, such that the first
* element is the currently focused window. (Useful for choosing a parent
* for a transient window.)
*
* The list that is returned should not be modified in any way. It will
* only remain valid until the next focus change or window creation or
* deletion.
*
* Returns: (element-type GtkWindow) (transfer none): a #GList of #GtkWindow
*
* Since: 3.0
**/
GList *
gtk_application_get_windows (GtkApplication *application)
{
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
return application->priv->windows;
}
/**
* gtk_application_get_window_by_id:
* @application: a #GtkApplication
* @id: an identifier number
*
* Returns the #GtkApplicationWindow with the given ID.
*
* Returns: (transfer none): the window with ID @id, or
* %NULL if there is no window with this ID
*
* Since: 3.6
*/
GtkWindow *
gtk_application_get_window_by_id (GtkApplication *application,
guint id)
{
GList *l;
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
for (l = application->priv->windows; l != NULL; l = l->next)
{
if (GTK_IS_APPLICATION_WINDOW (l->data) &&
gtk_application_window_get_id (GTK_APPLICATION_WINDOW (l->data)) == id)
return l->data;
}
return NULL;
}
/**
* gtk_application_get_active_window:
* @application: a #GtkApplication
*
* Gets the "active" window for the application.
*
* The active window is the one that was most recently focused (within
* the application). This window may not have the focus at the moment
* if another application has it -- this is just the most
* recently-focused window within this application.
*
* Returns: (transfer none): the active window
*
* Since: 3.6
**/
GtkWindow *
gtk_application_get_active_window (GtkApplication *application)
{
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
return application->priv->windows ? application->priv->windows->data : NULL;
}
/**
* gtk_application_add_accelerator:
* @application: a #GtkApplication
* @accelerator: accelerator string
* @action_name: the name of the action to activate
* @parameter: (allow-none): parameter to pass when activating the action,
* or %NULL if the action does not accept an activation parameter
*
* Installs an accelerator that will cause the named action
* to be activated when the key combination specificed by @accelerator
* is pressed.
*
* @accelerator must be a string that can be parsed by
* gtk_accelerator_parse(), e.g. "&lt;Primary&gt;q" or
* "&lt;Control&gt;&lt;Alt&gt;p".
*
* @action_name must be the name of an action as it would be used
* in the app menu, i.e. actions that have been added to the application
* are referred to with an "app." prefix, and window-specific actions
* with a "win." prefix.
*
* GtkApplication also extracts accelerators out of 'accel' attributes
* in the #GMenuModels passed to gtk_application_set_app_menu() and
* gtk_application_set_menubar(), which is usually more convenient
* than calling this function for each accelerator.
*
* Since: 3.4
*/
void
gtk_application_add_accelerator (GtkApplication *application,
const gchar *accelerator,
const gchar *action_name,
GVariant *parameter)
{
gchar *accel_path;
guint accel_key;
GdkModifierType accel_mods;
g_return_if_fail (GTK_IS_APPLICATION (application));
/* Call this here, since gtk_init() is only getting called in startup() */
_gtk_accel_map_init ();
gtk_accelerator_parse (accelerator, &accel_key, &accel_mods);
if (accel_key == 0)
{
g_warning ("Failed to parse accelerator: '%s'\n", accelerator);
return;
}
accel_path = _gtk_accel_path_for_action (action_name, parameter);
if (gtk_accel_map_lookup_entry (accel_path, NULL))
gtk_accel_map_change_entry (accel_path, accel_key, accel_mods, TRUE);
else
gtk_accel_map_add_entry (accel_path, accel_key, accel_mods);
g_free (accel_path);
}
/**
* gtk_application_remove_accelerator:
* @application: a #GtkApplication
* @action_name: the name of the action to activate
* @parameter: (allow-none): parameter to pass when activating the action,
* or %NULL if the action does not accept an activation parameter
*
* Removes an accelerator that has been previously added
* with gtk_application_add_accelerator().
*
* Since: 3.4
*/
void
gtk_application_remove_accelerator (GtkApplication *application,
const gchar *action_name,
GVariant *parameter)
{
gchar *accel_path;
g_return_if_fail (GTK_IS_APPLICATION (application));
accel_path = _gtk_accel_path_for_action (action_name, parameter);
if (!gtk_accel_map_lookup_entry (accel_path, NULL))
{
g_warning ("No accelerator found for '%s'\n", accel_path);
g_free (accel_path);
return;
}
gtk_accel_map_change_entry (accel_path, 0, 0, FALSE);
g_free (accel_path);
}
/**
* gtk_application_set_app_menu:
* @application: a #GtkApplication
* @app_menu: (allow-none): a #GMenuModel, or %NULL
*
* Sets or unsets the application menu for @application.
*
* This can only be done in the primary instance of the application,
* after it has been registered. #GApplication:startup is a good place
* to call this.
*
* The application menu is a single menu containing items that typically
* impact the application as a whole, rather than acting on a specific
* window or document. For example, you would expect to see
* "Preferences" or "Quit" in an application menu, but not "Save" or
* "Print".
*
* If supported, the application menu will be rendered by the desktop
* environment.
*
* Use the base #GActionMap interface to add actions, to respond to the user
* selecting these menu items.
*
* Since: 3.4
*/
void
gtk_application_set_app_menu (GtkApplication *application,
GMenuModel *app_menu)
{
g_return_if_fail (GTK_IS_APPLICATION (application));
g_return_if_fail (g_application_get_is_registered (G_APPLICATION (application)));
g_return_if_fail (!g_application_get_is_remote (G_APPLICATION (application)));
if (app_menu != application->priv->app_menu)
{
if (application->priv->app_menu != NULL)
g_object_unref (application->priv->app_menu);
application->priv->app_menu = app_menu;
if (application->priv->app_menu != NULL)
g_object_ref (application->priv->app_menu);
if (app_menu)
extract_accels_from_menu (app_menu, application);
#ifdef GDK_WINDOWING_X11
gtk_application_set_app_menu_x11 (application, app_menu);
#endif
g_object_notify (G_OBJECT (application), "app-menu");
}
}
/**
* gtk_application_get_app_menu:
* @application: a #GtkApplication
*
* Returns the menu model that has been set with
* gtk_application_set_app_menu().
*
* Returns: (transfer none): the application menu of @application
*
* Since: 3.4
*/
GMenuModel *
gtk_application_get_app_menu (GtkApplication *application)
{
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
return application->priv->app_menu;
}
/**
* gtk_application_set_menubar:
* @application: a #GtkApplication
* @menubar: (allow-none): a #GMenuModel, or %NULL
*
* Sets or unsets the menubar for windows of @application.
*
* This is a menubar in the traditional sense.
*
* This can only be done in the primary instance of the application,
* after it has been registered. #GApplication:startup is a good place
* to call this.
*
* Depending on the desktop environment, this may appear at the top of
* each window, or at the top of the screen. In some environments, if
* both the application menu and the menubar are set, the application
* menu will be presented as if it were the first item of the menubar.
* Other environments treat the two as completely separate -- for
* example, the application menu may be rendered by the desktop shell
* while the menubar (if set) remains in each individual window.
*
* Use the base #GActionMap interface to add actions, to respond to the user
* selecting these menu items.
*
* Since: 3.4
*/
void
gtk_application_set_menubar (GtkApplication *application,
GMenuModel *menubar)
{
g_return_if_fail (GTK_IS_APPLICATION (application));
g_return_if_fail (g_application_get_is_registered (G_APPLICATION (application)));
g_return_if_fail (!g_application_get_is_remote (G_APPLICATION (application)));
if (menubar != application->priv->menubar)
{
if (application->priv->menubar != NULL)
g_object_unref (application->priv->menubar);
application->priv->menubar = menubar;
if (application->priv->menubar != NULL)
g_object_ref (application->priv->menubar);
if (menubar)
extract_accels_from_menu (menubar, application);
#ifdef GDK_WINDOWING_X11
gtk_application_set_menubar_x11 (application, menubar);
#endif
g_object_notify (G_OBJECT (application), "menubar");
}
}
/**
* gtk_application_get_menubar:
* @application: a #GtkApplication
*
* Returns the menu model that has been set with
* gtk_application_set_menubar().
*
* Returns: (transfer none): the menubar for windows of @application
*
* Since: 3.4
*/
GMenuModel *
gtk_application_get_menubar (GtkApplication *application)
{
g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
return application->priv->menubar;
}
#if defined(GDK_WINDOWING_X11)
/* D-Bus Session Management
*
* The protocol and the D-Bus API are described here:
* http://live.gnome.org/SessionManagement/GnomeSession
* http://people.gnome.org/~mccann/gnome-session/docs/gnome-session.html
*/
static void
unregister_client (GtkApplication *app)
{
GError *error = NULL;
g_debug ("Unregistering client");
g_dbus_proxy_call_sync (app->priv->sm_proxy,
"UnregisterClient",
g_variant_new ("(o)", app->priv->client_path),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (error)
{
g_warning ("Failed to unregister client: %s", error->message);
g_error_free (error);
}
g_clear_object (&app->priv->client_proxy);
g_free (app->priv->client_path);
app->priv->client_path = NULL;
}
static void
gtk_application_quit_response (GtkApplication *application,
gboolean will_quit,
const gchar *reason)
{
g_debug ("Calling EndSessionResponse %d '%s'", will_quit, reason);
g_dbus_proxy_call (application->priv->client_proxy,
"EndSessionResponse",
g_variant_new ("(bs)", will_quit, reason ? reason : ""),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL, NULL, NULL);
}
static void
client_proxy_signal (GDBusProxy *proxy,
const gchar *sender_name,
const gchar *signal_name,
GVariant *parameters,
GtkApplication *app)
{
if (strcmp (signal_name, "QueryEndSession") == 0)
{
g_debug ("Received QueryEndSession");
gtk_application_quit_response (app, TRUE, NULL);
}
else if (strcmp (signal_name, "CancelEndSession") == 0)
{
g_debug ("Received CancelEndSession");
}
else if (strcmp (signal_name, "EndSession") == 0)
{
g_debug ("Received EndSession");
gtk_application_quit_response (app, TRUE, NULL);
unregister_client (app);
g_application_quit (G_APPLICATION (app));
}
else if (strcmp (signal_name, "Stop") == 0)
{
g_debug ("Received Stop");
unregister_client (app);
g_application_quit (G_APPLICATION (app));
}
}
static void
gtk_application_startup_session_dbus (GtkApplication *app)
{
static gchar *client_id;
GError *error = NULL;
GVariant *res;
if (app->priv->session_bus == NULL)
return;
if (client_id == NULL)
{
const gchar *desktop_autostart_id;
desktop_autostart_id = g_getenv ("DESKTOP_AUTOSTART_ID");
/* Unset DESKTOP_AUTOSTART_ID in order to avoid child processes to
* use the same client id.
*/
g_unsetenv ("DESKTOP_AUTOSTART_ID");
client_id = g_strdup (desktop_autostart_id ? desktop_autostart_id : "");
}
g_debug ("Connecting to session manager");
app->priv->sm_proxy = g_dbus_proxy_new_sync (app->priv->session_bus,
G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES |
G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS,
NULL,
"org.gnome.SessionManager",
"/org/gnome/SessionManager",
"org.gnome.SessionManager",
NULL,
&error);
if (error)
{
g_warning ("Failed to get a session proxy: %s", error->message);
g_error_free (error);
return;
}
/* FIXME: should we reuse the D-Bus application id here ? */
app->priv->app_id = g_strdup (g_get_prgname ());
if (!app->priv->register_session)
return;
g_debug ("Registering client '%s' '%s'", app->priv->app_id, client_id);
res = g_dbus_proxy_call_sync (app->priv->sm_proxy,
"RegisterClient",
g_variant_new ("(ss)", app->priv->app_id, client_id),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (error)
{
g_warning ("Failed to register client: %s", error->message);
g_error_free (error);
g_clear_object (&app->priv->sm_proxy);
return;
}
g_variant_get (res, "(o)", &app->priv->client_path);
g_variant_unref (res);
g_debug ("Registered client at '%s'", app->priv->client_path);
app->priv->client_proxy = g_dbus_proxy_new_sync (app->priv->session_bus, 0,
NULL,
"org.gnome.SessionManager",
app->priv->client_path,
"org.gnome.SessionManager.ClientPrivate",
NULL,
&error);
if (error)
{
g_warning ("Failed to get client proxy: %s", error->message);
g_error_free (error);
g_clear_object (&app->priv->sm_proxy);
g_free (app->priv->client_path);
app->priv->client_path = NULL;
return;
}
g_signal_connect (app->priv->client_proxy, "g-signal", G_CALLBACK (client_proxy_signal), app);
}
/**
* GtkApplicationInhibitFlags:
* @GTK_APPLICATION_INHIBIT_LOGOUT: Inhibit ending the user session
* by logging out or by shutting down the computer
* @GTK_APPLICATION_INHIBIT_SWITCH: Inhibit user switching
* @GTK_APPLICATION_INHIBIT_SUSPEND: Inhibit suspending the
* session or computer
* @GTK_APPLICATION_INHIBIT_IDLE: Inhibit the session being
* marked as idle (and possibly locked)
*
* Types of user actions that may be blocked by gtk_application_inhibit().
*
* Since: 3.4
*/
/**
* gtk_application_inhibit:
* @application: the #GApplication
* @window: (allow-none): a #GtkWindow, or %NULL
* @flags: what types of actions should be inhibited
* @reason: (allow-none): a short, human-readable string that explains
* why these operations are inhibited
*
* Inform the session manager that certain types of actions should be
* inhibited. This is not guaranteed to work on all platforms and for
* all types of actions.
*
* Applications should invoke this method when they begin an operation
* that should not be interrupted, such as creating a CD or DVD. The
* types of actions that may be blocked are specified by the @flags
* parameter. When the application completes the operation it should
* call gtk_application_uninhibit() to remove the inhibitor. Note that
* an application can have multiple inhibitors, and all of the must
* be individually removed. Inhibitors are also cleared when the
* application exits.
*
* Applications should not expect that they will always be able to block
* the action. In most cases, users will be given the option to force
* the action to take place.
*
* Reasons should be short and to the point.
*
* If @window is given, the session manager may point the user to
* this window to find out more about why the action is inhibited.
*
* Returns: A non-zero cookie that is used to uniquely identify this
* request. It should be used as an argument to gtk_application_uninhibit()
* in order to remove the request. If the platform does not support
* inhibiting or the request failed for some reason, 0 is returned.
*
* Since: 3.4
*/
guint
gtk_application_inhibit (GtkApplication *application,
GtkWindow *window,
GtkApplicationInhibitFlags flags,
const gchar *reason)
{
GVariant *res;
GError *error = NULL;
guint cookie;
guint xid = 0;
g_return_val_if_fail (GTK_IS_APPLICATION (application), 0);
g_return_val_if_fail (!g_application_get_is_remote (G_APPLICATION (application)), 0);
g_return_val_if_fail (application->priv->sm_proxy != NULL, 0);
if (window != NULL)
{
GdkWindow *gdkwindow;
gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
if (gdkwindow == NULL)
g_warning ("Inhibit called with an unrealized window");
else
xid = GDK_WINDOW_XID (gdkwindow);
}
res = g_dbus_proxy_call_sync (application->priv->sm_proxy,
"Inhibit",
g_variant_new ("(susu)",
application->priv->app_id,
xid,
reason,
flags),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (error)
{
g_warning ("Calling Inhibit failed: %s", error->message);
g_error_free (error);
return 0;
}
g_variant_get (res, "(u)", &cookie);
g_variant_unref (res);
return cookie;
}
/**
* gtk_application_uninhibit:
* @application: the #GApplication
* @cookie: a cookie that was returned by gtk_application_inhibit()
*
* Removes an inhibitor that has been established with gtk_application_inhibit().
* Inhibitors are also cleared when the application exits.
*
* Since: 3.4
*/
void
gtk_application_uninhibit (GtkApplication *application,
guint cookie)
{
g_return_if_fail (GTK_IS_APPLICATION (application));
g_return_if_fail (!g_application_get_is_remote (G_APPLICATION (application)));
g_return_if_fail (application->priv->sm_proxy != NULL);
g_dbus_proxy_call (application->priv->sm_proxy,
"Uninhibit",
g_variant_new ("(u)", cookie),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL, NULL, NULL);
}
/**
* gtk_application_is_inhibited:
* @application: the #GApplication
* @flags: what types of actions should be queried
*
* Determines if any of the actions specified in @flags are
* currently inhibited (possibly by another application).
*
* Returns: %TRUE if any of the actions specified in @flags are inhibited
*
* Since: 3.4
*/
gboolean
gtk_application_is_inhibited (GtkApplication *application,
GtkApplicationInhibitFlags flags)
{
GVariant *res;
GError *error = NULL;
gboolean inhibited;
g_return_val_if_fail (GTK_IS_APPLICATION (application), FALSE);
g_return_val_if_fail (!g_application_get_is_remote (G_APPLICATION (application)), FALSE);
g_return_val_if_fail (application->priv->sm_proxy != NULL, FALSE);
res = g_dbus_proxy_call_sync (application->priv->sm_proxy,
"IsInhibited",
g_variant_new ("(u)", flags),
G_DBUS_CALL_FLAGS_NONE,
G_MAXINT,
NULL,
&error);
if (error)
{
g_warning ("Calling IsInhibited failed: %s", error->message);
g_error_free (error);
return FALSE;
}
g_variant_get (res, "(b)", &inhibited);
g_variant_unref (res);
return inhibited;
}
#elif defined(GDK_WINDOWING_QUARTZ)
/* OS X implementation copied from EggSMClient, but simplified since
* it doesn't need to interact with the user.
*/
static gboolean
idle_will_quit (gpointer data)
{
GtkApplication *app = data;
if (app->priv->quit_inhibit == 0)
g_application_quit (G_APPLICATION (app));
else
{
GtkApplicationQuartzInhibitor *inhibitor;
GSList *iter;
GtkWidget *dialog;
for (iter = app->priv->inhibitors; iter; iter = iter->next)
{
inhibitor = iter->data;
if (inhibitor->flags & GTK_APPLICATION_INHIBIT_LOGOUT)
break;
}
g_assert (inhibitor != NULL);
dialog = gtk_message_dialog_new (inhibitor->window,
GTK_DIALOG_MODAL,
GTK_MESSAGE_ERROR,
GTK_BUTTONS_OK,
_("%s cannot quit at this time:\n\n%s"),
g_get_application_name (),
inhibitor->reason);
g_signal_connect_swapped (dialog,
"response",
G_CALLBACK (gtk_widget_destroy),
dialog);
gtk_widget_show_all (dialog);
}
return G_SOURCE_REMOVE;
}
static pascal OSErr
quit_requested (const AppleEvent *aevt,
AppleEvent *reply,
long refcon)
{
GtkApplication *app = GSIZE_TO_POINTER ((gsize)refcon);
/* Don't emit the "quit" signal immediately, since we're
* called from a weird point in the guts of gdkeventloop-quartz.c
*/
g_idle_add_full (G_PRIORITY_DEFAULT, idle_will_quit, app, NULL);
return app->priv->quit_inhibit == 0 ? noErr : userCanceledErr;
}
static void
gtk_application_startup_session_quartz (GtkApplication *app)
{
if (app->priv->register_session)
AEInstallEventHandler (kCoreEventClass, kAEQuitApplication,
NewAEEventHandlerUPP (quit_requested),
(long)GPOINTER_TO_SIZE (app), false);
}
guint
gtk_application_inhibit (GtkApplication *application,
GtkWindow *window,
GtkApplicationInhibitFlags flags,
const gchar *reason)
{
GtkApplicationQuartzInhibitor *inhibitor;
g_return_val_if_fail (GTK_IS_APPLICATION (application), 0);
g_return_val_if_fail (flags != 0, 0);
inhibitor = g_slice_new (GtkApplicationQuartzInhibitor);
inhibitor->cookie = ++application->priv->next_cookie;
inhibitor->flags = flags;
inhibitor->reason = g_strdup (reason);
inhibitor->window = window ? g_object_ref (window) : NULL;
application->priv->inhibitors = g_slist_prepend (application->priv->inhibitors, inhibitor);
if (flags & GTK_APPLICATION_INHIBIT_LOGOUT)
application->priv->quit_inhibit++;
return inhibitor->cookie;
}
void
gtk_application_uninhibit (GtkApplication *application,
guint cookie)
{
GSList *iter;
for (iter = application->priv->inhibitors; iter; iter = iter->next)
{
GtkApplicationQuartzInhibitor *inhibitor = iter->data;
if (inhibitor->cookie == cookie)
{
if (inhibitor->flags & GTK_APPLICATION_INHIBIT_LOGOUT)
application->priv->quit_inhibit--;
gtk_application_quartz_inhibitor_free (inhibitor);
application->priv->inhibitors = g_slist_delete_link (application->priv->inhibitors, iter);
return;
}
}
g_warning ("Invalid inhibitor cookie");
}
gboolean
gtk_application_is_inhibited (GtkApplication *application,
GtkApplicationInhibitFlags flags)
{
if (flags & GTK_APPLICATION_INHIBIT_LOGOUT)
return application->priv->quit_inhibit > 0;
return FALSE;
}
#else
/* Trivial implementation.
*
* For the inhibit API on Windows, see
* http://msdn.microsoft.com/en-us/library/ms700677%28VS.85%29.aspx
*/
guint
gtk_application_inhibit (GtkApplication *application,
GtkWindow *window,
GtkApplicationInhibitFlags flags,
const gchar *reason)
{
return 0;
}
void
gtk_application_uninhibit (GtkApplication *application,
guint cookie)
{
}
gboolean
gtk_application_is_inhibited (GtkApplication *application,
GtkApplicationInhibitFlags flags)
{
return FALSE;
}
#endif
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