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cinnamon-window-tracker.c
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cinnamon-window-tracker.c
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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <gdk/gdk.h>
#include <gdk/gdkx.h>
#include <meta/display.h>
#include <meta/group.h>
#include <meta/util.h>
#include <meta/window.h>
#include <meta/meta-workspace-manager.h>
#include <meta/meta-startup-notification.h>
#include "cinnamon-window-tracker-private.h"
#include "cinnamon-app-private.h"
#include "cinnamon-global-private.h"
#include "st.h"
/* This file includes modified code from
* desktop-data-engine/engine-dbus/hippo-application-monitor.c
* in the functions collecting application usage data.
* Written by Owen Taylor, originally licensed under LGPL 2.1.
* Copyright Red Hat, Inc. 2006-2008
*/
/**
* SECTION:cinnamon-window-tracker
* @short_description: Associate windows with applications
*
* Maintains a mapping from windows to applications (.desktop file ids).
* It currently implements this with some heuristics on the WM_CLASS X11
* property (and some static override regexps); in the future, we want to
* have it also track through startup-notification.
*/
struct _CinnamonWindowTracker
{
GObject parent;
CinnamonGlobal *global;
CinnamonApp *focus_app;
/* <MetaWindow * window, CinnamonApp *app> */
GHashTable *window_to_app;
/* <int, CinnamonApp *app> */
GHashTable *launched_pid_to_app;
};
G_DEFINE_TYPE (CinnamonWindowTracker, cinnamon_window_tracker, G_TYPE_OBJECT);
enum {
PROP_0,
PROP_FOCUS_APP
};
enum {
STARTUP_SEQUENCE_CHANGED,
WINDOW_APP_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void cinnamon_window_tracker_finalize (GObject *object);
static void set_focus_app (CinnamonWindowTracker *tracker,
CinnamonApp *new_focus_app);
static void on_focus_window_changed (MetaDisplay *display, GParamSpec *spec, CinnamonWindowTracker *tracker);
static void track_window (CinnamonWindowTracker *tracker, MetaWindow *window);
static void disassociate_window (CinnamonWindowTracker *tracker, MetaWindow *window);
CinnamonApp *meta_startup_sequence_get_app (MetaStartupSequence *sequence);
static void
cinnamon_window_tracker_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
CinnamonWindowTracker *tracker = CINNAMON_WINDOW_TRACKER (gobject);
switch (prop_id)
{
case PROP_FOCUS_APP:
g_value_set_object (value, tracker->focus_app);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (gobject, prop_id, pspec);
break;
}
}
static void
cinnamon_window_tracker_class_init (CinnamonWindowTrackerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = cinnamon_window_tracker_get_property;
gobject_class->finalize = cinnamon_window_tracker_finalize;
g_object_class_install_property (gobject_class,
PROP_FOCUS_APP,
g_param_spec_object ("focus-app",
"Focus App",
"Focused application",
CINNAMON_TYPE_APP,
G_PARAM_READABLE));
signals[STARTUP_SEQUENCE_CHANGED] = g_signal_new ("startup-sequence-changed",
CINNAMON_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, META_TYPE_STARTUP_SEQUENCE);
signals[WINDOW_APP_CHANGED] = g_signal_new ("window-app-changed",
CINNAMON_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL, NULL,
G_TYPE_NONE, 1, META_TYPE_WINDOW);
}
/**
* cinnamon_window_tracker_is_window_interesting:
* @tracker: the CinnamonWindowTracker
* @window: a #MetaWindow
*
* The CinnamonWindowTracker associates certain kinds of windows with
* applications; however, others we don't want to
* appear in places where we want to give a list of windows
* for an application, such as the alt-tab dialog.
*
* An example of a window we don't want to show is the root
* desktop window. We skip all override-redirect types, and also
* exclude other window types like tooltip explicitly, though generally
* most of these should be override-redirect.
*
* Returns: %TRUE if a window is "interesting"
*/
gboolean
cinnamon_window_tracker_is_window_interesting (CinnamonWindowTracker *tracker, MetaWindow *window)
{
MetaWindowType type;
type = meta_window_get_window_type (window);
if (meta_window_is_override_redirect (window)
|| meta_window_is_skip_taskbar (window))
return FALSE;
switch (type)
{
/* Definitely ignore these. */
case META_WINDOW_DESKTOP:
case META_WINDOW_DOCK:
case META_WINDOW_SPLASHSCREEN:
/* Should have already been handled by override_redirect above,
* but explicitly list here so we get the "unhandled enum"
* warning if in the future anything is added.*/
case META_WINDOW_DROPDOWN_MENU:
case META_WINDOW_POPUP_MENU:
case META_WINDOW_TOOLTIP:
case META_WINDOW_NOTIFICATION:
case META_WINDOW_COMBO:
case META_WINDOW_DND:
case META_WINDOW_OVERRIDE_OTHER:
return FALSE;
case META_WINDOW_NORMAL:
case META_WINDOW_DIALOG:
case META_WINDOW_MODAL_DIALOG:
case META_WINDOW_MENU:
case META_WINDOW_TOOLBAR:
case META_WINDOW_UTILITY:
break;
default:
g_warning ("cinnamon_window_tracker_is_window_interesting: default reached");
break;
}
return TRUE;
}
static gboolean
is_window_only_browser_app (MetaWindow *window,
const gchar *wm_instance,
const gchar *wm_class)
{
if (wm_instance == NULL || wm_class == NULL)
{
return FALSE;
}
/* This is to catch browser-based app windows that are spawned
* windows (such as from clicking an extension - LINE is a test
* case). There's no desktop file but we don't want to use the
* browser icon and the window has a pixmap to use. */
g_autofree gchar *utf8_instance = NULL;
g_autofree gchar *utf8_class = NULL;
g_autofree gchar *lower_instance = NULL;
g_autofree gchar *lower_class = NULL;
utf8_instance = g_utf8_make_valid (wm_instance, -1);
utf8_class = g_utf8_make_valid (wm_class, -1);
lower_instance = g_utf8_casefold (utf8_instance, -1);
lower_class = g_utf8_casefold (utf8_class, -1);
// If the instance and instance are the same ["chromium-browser", "Chromium-browser"],
// don't consider it special.
if (g_strcmp0 (lower_instance, lower_class) == 0)
{
return FALSE;
}
// If the two strings differ, and one has browser in it, then assume it's a web app.
if (g_strstr_len (lower_instance, -1, "browser") || g_strstr_len (lower_class, -1, "browser"))
{
return TRUE;
}
// we don't know, match some other way.
return FALSE;
}
/**
* get_app_from_window_wmclass:
*
* Looks only at the given window, and attempts to determine
* an application based on WM_CLASS. If one can't be determined,
* return %NULL.
*
* Return value: (transfer full): A newly-referenced #CinnamonApp, or %NULL
*/
static CinnamonApp *
get_app_from_window_wmclass (MetaWindow *window)
{
CinnamonApp *app;
CinnamonAppSystem *appsys;
const char *wm_class;
const char *wm_instance;
appsys = cinnamon_app_system_get_default ();
/* Notes on the heuristics used here:
much of the complexity here comes from the desire to support
Chrome apps.
From https://bugzilla.gnome.org/show_bug.cgi?id=673657#c13
Currently chrome sets WM_CLASS as follows (the first string is the 'instance',
the second one is the 'class':
For the normal browser:
WM_CLASS(STRING) = "chromium", "Chromium"
For a bookmarked page (through 'Tools -> Create application shortcuts')
WM_CLASS(STRING) = "wiki.gnome.org__GnomeShell_ApplicationBased", "Chromium"
For an application from the chrome store (with a .desktop file created through
right click, "Create shortcuts" from Chrome's apps overview)
WM_CLASS(STRING) = "crx_blpcfgokakmgnkcojhhkbfbldkacnbeo", "Chromium"
The .desktop file has a matching StartupWMClass, but the name differs, e.g. for
the store app (youtube) there is
.local/share/applications/chrome-blpcfgokakmgnkcojhhkbfbldkacnbeo-Default.desktop
with
StartupWMClass=crx_blpcfgokakmgnkcojhhkbfbldkacnbeo
Note that chromium (but not google-chrome!) includes a StartupWMClass=chromium
in their .desktop file, so we must match the instance first.
Also note that in the good case (regular gtk+ app without hacks), instance and
class are the same except for case and there is no StartupWMClass at all.
*/
#if 0
wm_instance = meta_window_get_wm_class_instance (window);
wm_class = meta_window_get_wm_class (window);
g_printerr ("get_app_from_window_wmclass: wm_instance: %s, wm_class: %s\n", wm_instance, wm_class);
#endif
/* first try a match from WM_CLASS (instance part) to StartupWMClass */
wm_instance = meta_window_get_wm_class_instance (window);
app = cinnamon_app_system_lookup_startup_wmclass (appsys, wm_instance);
if (app != NULL)
return g_object_ref (app);
/* then try a match from WM_CLASS to StartupWMClass */
wm_class = meta_window_get_wm_class (window);
app = cinnamon_app_system_lookup_startup_wmclass (appsys, wm_class);
if (app != NULL)
return g_object_ref (app);
/* then try a match from WM_CLASS (instance part) to .desktop */
app = cinnamon_app_system_lookup_desktop_wmclass (appsys, wm_instance);
if (app != NULL)
return g_object_ref (app);
/* figure out if it's a browser app without a desktop file. */
if (is_window_only_browser_app (window, wm_instance, wm_class))
{
// Force it to use the window pixmap.
return NULL;
}
/* finally, try a match from WM_CLASS to .desktop */
app = cinnamon_app_system_lookup_desktop_wmclass (appsys, wm_class);
if (app != NULL)
return g_object_ref (app);
return NULL;
}
/**
* get_app_from_gapplication_id:
* @monitor: a #CinnamonWindowTracker
* @window: a #MetaWindow
*
* Looks only at the given window, and attempts to determine
* an application based on _GTK_APPLICATION_ID. If one can't be determined,
* return %NULL.
*
* Return value: (transfer full): A newly-referenced #CinnamonApp, or %NULL
*/
static CinnamonApp *
get_app_from_gapplication_id (MetaWindow *window)
{
CinnamonApp *app;
CinnamonAppSystem *appsys;
const char *id;
char *desktop_file;
appsys = cinnamon_app_system_get_default ();
id = meta_window_get_gtk_application_id (window);
if (!id)
return NULL;
desktop_file = g_strconcat (id, ".desktop", NULL);
app = cinnamon_app_system_lookup_app (appsys, desktop_file);
if (app)
g_object_ref (app);
g_free (desktop_file);
return app;
}
/**
* get_app_from_window_group:
* @monitor: a #CinnamonWindowTracker
* @window: a #MetaWindow
*
* Check other windows in the group for @window to see if we have
* an application for one of them.
*
* Return value: (transfer full): A newly-referenced #CinnamonApp, or %NULL
*/
static CinnamonApp*
get_app_from_window_group (CinnamonWindowTracker *tracker,
MetaWindow *window)
{
CinnamonApp *result;
GSList *group_windows;
MetaGroup *group;
GSList *iter;
group = meta_window_get_group (window);
if (group == NULL)
return NULL;
group_windows = meta_group_list_windows (group);
result = NULL;
/* Try finding a window in the group of type NORMAL; if we
* succeed, use that as our source. */
for (iter = group_windows; iter; iter = iter->next)
{
MetaWindow *group_window = iter->data;
if (meta_window_get_window_type (group_window) != META_WINDOW_NORMAL)
continue;
result = g_hash_table_lookup (tracker->window_to_app, group_window);
if (result)
break;
}
g_slist_free (group_windows);
if (result)
g_object_ref (result);
return result;
}
/**
* get_app_from_window_pid:
* @tracker: a #CinnamonWindowTracker
* @window: a #MetaWindow
*
* Check if the pid associated with @window corresponds to an
* application.
*
* Return value: (transfer full): A newly-referenced #CinnamonApp, or %NULL
*/
static CinnamonApp *
get_app_from_window_pid (CinnamonWindowTracker *tracker,
MetaWindow *window)
{
CinnamonApp *result;
int pid;
if (meta_window_is_remote (window))
return NULL;
pid = meta_window_get_pid (window);
if (pid < 1)
return NULL;
result = cinnamon_window_tracker_get_app_from_pid (tracker, pid);
if (result != NULL)
g_object_ref (result);
return result;
}
static CinnamonApp *
get_app_for_flatpak_window (MetaWindow *window)
{
CinnamonAppSystem *appsys;
CinnamonApp *app = NULL;
CinnamonApp *result = NULL;
gchar *info_filename;
GFile *file;
int pid = meta_window_get_client_pid (window);
g_return_val_if_fail (pid > 0, NULL);
info_filename = g_strdup_printf ("/proc/%u/root/.flatpak-info", pid);
file = g_file_new_for_path (info_filename);
if (g_file_query_exists (file, NULL)) {
gchar *wm_class;
gchar *wm_instance;
GKeyFile *keyfile;
appsys = cinnamon_app_system_get_default ();
wm_instance = g_strconcat(meta_window_get_wm_class_instance (window), GMENU_DESKTOPAPPINFO_FLATPAK_SUFFIX, NULL);
wm_class = g_strconcat(meta_window_get_wm_class (window), GMENU_DESKTOPAPPINFO_FLATPAK_SUFFIX, NULL);
// First, try a match WM_INSTANCE to StartupWMClass
app = cinnamon_app_system_lookup_startup_wmclass (appsys, wm_instance);
if (app != NULL) {
result = g_object_ref (app);
}
/* then try a match from WM_CLASS to StartupWMClass */
if (result == NULL) {
app = cinnamon_app_system_lookup_startup_wmclass (appsys, wm_class);
if (app != NULL) {
result = g_object_ref (app);
}
}
/* then try a match from WM_CLASS (instance part) to .desktop */
if (result == NULL) {
app = cinnamon_app_system_lookup_desktop_wmclass (appsys, wm_instance);
if (app != NULL) {
result = g_object_ref (app);
}
}
/* finally, try a match from WM_CLASS to .desktop */
if (result == NULL) {
app = cinnamon_app_system_lookup_desktop_wmclass (appsys, wm_class);
if (app != NULL) {
result = g_object_ref (app);
}
}
g_free (wm_instance);
g_free (wm_class);
// Finally, try to match it against the .flatpak-info entry "Application"
if (result == NULL) {
keyfile = g_key_file_new ();
if (g_key_file_load_from_file (keyfile, info_filename, G_KEY_FILE_NONE, NULL)) {
gchar *app_id;
app_id = g_key_file_get_string (keyfile, "Application", "name", NULL);
app = cinnamon_app_system_lookup_flatpak_app_id (appsys, app_id);
if (app != NULL) {
result = g_object_ref (app);
}
}
g_key_file_unref (keyfile);
}
}
g_free (info_filename);
g_object_unref(file);
return result;
}
/**
* get_app_for_window:
*
* Determines the application associated with a window, using
* all available information such as the window's MetaGroup,
* and what we know about other windows.
*
* Returns: (transfer full): a #CinnamonApp, or NULL if none is found
*/
static CinnamonApp *
get_app_for_window (CinnamonWindowTracker *tracker,
MetaWindow *window)
{
CinnamonApp *result = NULL;
const char *startup_id;
/* First, we check whether we already know about this window,
* if so, just return that.
*/
if (meta_window_get_window_type (window) == META_WINDOW_NORMAL
|| meta_window_is_remote (window))
{
result = g_hash_table_lookup (tracker->window_to_app, window);
if (result != NULL)
{
g_object_ref (result);
return result;
}
}
if (meta_window_is_remote (window))
return _cinnamon_app_new_for_window (window);
/* Check if the window was launched from a sandboxed app, e.g. Flatpak */
result = get_app_for_flatpak_window (window);
if (result != NULL)
return result;
/* Check if the window has a GApplication ID attached; this is
* canonical if it does
*/
result = get_app_from_gapplication_id (window);
if (result != NULL)
return result;
/* Check if the app's WM_CLASS specifies an app; this is
* canonical if it does.
*/
result = get_app_from_window_wmclass (window);
if (result != NULL)
return result;
result = get_app_from_window_pid (tracker, window);
if (result != NULL)
return result;
/* Now we check whether we have a match through startup-notification */
startup_id = meta_window_get_startup_id (window);
if (startup_id)
{
GSList *iter, *sequences;
sequences = cinnamon_window_tracker_get_startup_sequences (tracker);
for (iter = sequences; iter; iter = iter->next)
{
MetaStartupSequence *sequence = iter->data;
const char *id = meta_startup_sequence_get_id (sequence);
if (strcmp (id, startup_id) != 0)
continue;
result = meta_startup_sequence_get_app (sequence);
if (result)
{
result = g_object_ref (result);
break;
}
}
}
/* If we didn't get a startup-notification match, see if we matched
* any other windows in the group.
*/
if (result == NULL)
result = get_app_from_window_group (tracker, window);
/* Our last resort - we create a fake app from the window */
if (result == NULL)
result = _cinnamon_app_new_for_window (window);
return result;
}
static void
update_focus_app (CinnamonWindowTracker *self)
{
MetaWindow *new_focus_win;
CinnamonApp *new_focus_app;
new_focus_win = meta_display_get_focus_window (self->global->meta_display);
new_focus_app = new_focus_win ? cinnamon_window_tracker_get_window_app (self, new_focus_win) : NULL;
set_focus_app (self, new_focus_app);
g_clear_object (&new_focus_app);
}
static void
tracked_window_changed (CinnamonWindowTracker *self,
MetaWindow *window)
{
/* It's simplest to just treat this as a remove + add. */
disassociate_window (self, window);
track_window (self, window);
/* also just recalculate the focused app, in case it was the focused
window that changed */
update_focus_app (self);
}
static void
on_wm_class_changed (MetaWindow *window,
GParamSpec *pspec,
gpointer user_data)
{
CinnamonWindowTracker *self = CINNAMON_WINDOW_TRACKER (user_data);
tracked_window_changed (self, window);
}
static void
on_gtk_application_id_changed (MetaWindow *window,
GParamSpec *pspec,
gpointer user_data)
{
CinnamonWindowTracker *self = CINNAMON_WINDOW_TRACKER (user_data);
tracked_window_changed (self, window);
}
static void
track_window (CinnamonWindowTracker *self,
MetaWindow *window)
{
CinnamonApp *app;
if (!cinnamon_window_tracker_is_window_interesting (self, window))
return;
app = get_app_for_window (self, window);
if (!app)
return;
/* At this point we've stored the association from window -> application */
g_hash_table_insert (self->window_to_app, window, app);
g_signal_connect (window, "notify::wm-class", G_CALLBACK (on_wm_class_changed), self);
g_signal_connect (window, "notify::gtk-application-id", G_CALLBACK (on_gtk_application_id_changed), self);
_cinnamon_app_add_window (app, window);
g_signal_emit (self, signals[WINDOW_APP_CHANGED], 0, window);
}
static void
cinnamon_window_tracker_on_window_added (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
CinnamonWindowTracker *self = CINNAMON_WINDOW_TRACKER (user_data);
track_window (self, window);
}
static void
disassociate_window (CinnamonWindowTracker *self,
MetaWindow *window)
{
CinnamonApp *app;
app = g_hash_table_lookup (self->window_to_app, window);
if (!app)
return;
g_object_ref (app);
g_hash_table_remove (self->window_to_app, window);
if (cinnamon_window_tracker_is_window_interesting (self, window))
{
_cinnamon_app_remove_window (app, window);
g_signal_handlers_disconnect_by_func (window, G_CALLBACK(on_wm_class_changed), self);
g_signal_handlers_disconnect_by_func (window, G_CALLBACK (on_gtk_application_id_changed), self);
}
g_signal_emit (self, signals[WINDOW_APP_CHANGED], 0, window);
g_object_unref (app);
}
static void
cinnamon_window_tracker_on_window_removed (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
disassociate_window (CINNAMON_WINDOW_TRACKER (user_data), window);
}
void
load_initial_windows (CinnamonWindowTracker *tracker)
{
MetaDisplay *display = cinnamon_global_get_display (cinnamon_global_get ());
MetaWorkspaceManager *workspace_manager =
meta_display_get_workspace_manager (display);
GList *workspaces;
GList *l;
workspaces = meta_workspace_manager_get_workspaces (workspace_manager);
for (l = workspaces; l; l = l->next)
{
MetaWorkspace *workspace = l->data;
GList *windows = meta_workspace_list_windows (workspace);
GList *window_iter;
for (window_iter = windows; window_iter; window_iter = window_iter->next)
{
MetaWindow *window = window_iter->data;
track_window (tracker, window);
}
g_list_free (windows);
}
}
static void
cinnamon_window_tracker_on_n_workspaces_changed (MetaWorkspaceManager *workspace_manager,
GParamSpec *pspec,
gpointer user_data)
{
CinnamonWindowTracker *self = CINNAMON_WINDOW_TRACKER (user_data);
GList *workspaces;
GList *l;
workspaces = meta_workspace_manager_get_workspaces (workspace_manager);
for (l = workspaces; l; l = l->next)
{
MetaWorkspace *workspace = l->data;
/* This pair of disconnect/connect is idempotent if we were
* already connected, while ensuring we get connected for
* new workspaces.
*/
g_signal_handlers_disconnect_by_func (workspace,
cinnamon_window_tracker_on_window_added,
self);
g_signal_handlers_disconnect_by_func (workspace,
cinnamon_window_tracker_on_window_removed,
self);
g_signal_connect (workspace, "window-added",
G_CALLBACK (cinnamon_window_tracker_on_window_added), self);
g_signal_connect (workspace, "window-removed",
G_CALLBACK (cinnamon_window_tracker_on_window_removed), self);
}
}
static void
init_window_tracking (CinnamonWindowTracker *self)
{
MetaWorkspaceManager *workspace_manager = self->global->workspace_manager;
g_signal_connect (workspace_manager, "notify::n-workspaces",
G_CALLBACK (cinnamon_window_tracker_on_n_workspaces_changed), self);
g_signal_connect (self->global->meta_display, "notify::focus-window",
G_CALLBACK (on_focus_window_changed), self);
cinnamon_window_tracker_on_n_workspaces_changed (workspace_manager, NULL, self);
}
static void
on_startup_sequence_changed (MetaStartupNotification *sn,
MetaStartupSequence *sequence,
CinnamonWindowTracker *self)
{
CinnamonApp *app;
app = meta_startup_sequence_get_app ((MetaStartupSequence*)sequence);
if (app)
_cinnamon_app_handle_startup_sequence (app, sequence);
g_signal_emit (G_OBJECT (self), signals[STARTUP_SEQUENCE_CHANGED], 0, sequence);
}
static void
cinnamon_window_tracker_init (CinnamonWindowTracker *self)
{
self->global = cinnamon_global_get ();
MetaStartupNotification *sn = meta_display_get_startup_notification (self->global->meta_display);
self->window_to_app = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) g_object_unref);
self->launched_pid_to_app = g_hash_table_new_full (NULL, NULL, NULL, (GDestroyNotify) g_object_unref);
g_signal_connect (sn, "changed",
G_CALLBACK (on_startup_sequence_changed), self);
load_initial_windows (self);
init_window_tracking (self);
}
static void
cinnamon_window_tracker_finalize (GObject *object)
{
CinnamonWindowTracker *self = CINNAMON_WINDOW_TRACKER (object);
g_hash_table_destroy (self->window_to_app);
g_hash_table_destroy (self->launched_pid_to_app);
G_OBJECT_CLASS (cinnamon_window_tracker_parent_class)->finalize(object);
}
/**
* cinnamon_window_tracker_get_window_app:
* @tracker: An app monitor instance
* @metawin: A #MetaWindow
*
* Returns: (transfer full): Application associated with window
*/
CinnamonApp *
cinnamon_window_tracker_get_window_app (CinnamonWindowTracker *tracker,
MetaWindow *metawin)
{
MetaWindow *transient_for;
CinnamonApp *app;
transient_for = meta_window_get_transient_for (metawin);
if (transient_for != NULL)
metawin = transient_for;
app = g_hash_table_lookup (tracker->window_to_app, metawin);
if (app)
g_object_ref (app);
return app;
}
/**
* cinnamon_window_tracker_get_app_from_pid:
* @self; A #CinnamonAppSystem
* @pid: A Unix process identifier
*
* Look up the application corresponding to a process.
*
* Returns: (transfer none): A #CinnamonApp, or %NULL if none
*/
CinnamonApp *
cinnamon_window_tracker_get_app_from_pid (CinnamonWindowTracker *self,
int pid)
{
GSList *running = cinnamon_app_system_get_running (cinnamon_app_system_get_default());
GSList *iter;
CinnamonApp *result = NULL;
for (iter = running; iter; iter = iter->next)
{
CinnamonApp *app = iter->data;
GSList *pids = cinnamon_app_get_pids (app);
GSList *pids_iter;
for (pids_iter = pids; pids_iter; pids_iter = pids_iter->next)
{
int app_pid = GPOINTER_TO_INT (pids_iter->data);
if (app_pid == pid)
{
result = app;
break;
}
}
g_slist_free (pids);
if (result != NULL)
break;
}
g_slist_free (running);
return result;
}
static void
on_child_exited (GPid pid,
gint status,
gpointer unused_data)
{
CinnamonWindowTracker *tracker;
tracker = cinnamon_window_tracker_get_default ();
g_hash_table_remove (tracker->launched_pid_to_app, GINT_TO_POINTER((gint)pid));
}
void
_cinnamon_window_tracker_add_child_process_app (CinnamonWindowTracker *tracker,
GPid pid,
CinnamonApp *app)
{
gpointer pid_ptr = GINT_TO_POINTER((int)pid);
if (g_hash_table_lookup (tracker->launched_pid_to_app,
&pid_ptr))
return;
g_hash_table_insert (tracker->launched_pid_to_app,
pid_ptr,
g_object_ref (app));
g_child_watch_add (pid, on_child_exited, NULL);
/* TODO: rescan unassociated windows
* Unlikely in practice that the launched app gets ahead of us
* enough to map an X window before we get scheduled after the fork(),
* but adding this note for future reference.
*/
}
static void
set_focus_app (CinnamonWindowTracker *tracker,
CinnamonApp *new_focus_app)
{
if (new_focus_app == tracker->focus_app)
return;
if (tracker->focus_app != NULL)
g_object_unref (tracker->focus_app);
tracker->focus_app = new_focus_app;
if (tracker->focus_app != NULL)
g_object_ref (tracker->focus_app);
g_object_notify (G_OBJECT (tracker), "focus-app");
}
static void
on_focus_window_changed (MetaDisplay *display,
GParamSpec *spec,
CinnamonWindowTracker *tracker)
{
update_focus_app (tracker);
}
/**
* cinnamon_window_tracker_get_startup_sequences:
* @tracker:
*
* Returns: (transfer none) (element-type MetaStartupSequence): Currently active startup sequences
*/
GSList *
cinnamon_window_tracker_get_startup_sequences (CinnamonWindowTracker *self)
{
MetaStartupNotification *sn = meta_display_get_startup_notification (self->global->meta_display);
return meta_startup_notification_get_sequences (sn);
}
/**
* meta_startup_sequence_get_app:
* @sequence: A #MetaStartupSequence
*
* Returns: (transfer none): The application being launched, or %NULL if unknown.
*/
CinnamonApp *
meta_startup_sequence_get_app (MetaStartupSequence *sequence)
{
const char *appid;
char *basename;
CinnamonAppSystem *appsys;
CinnamonApp *app;
appid = meta_startup_sequence_get_application_id (sequence);
if (!appid)
return NULL;
basename = g_path_get_basename (appid);
appsys = cinnamon_app_system_get_default ();
app = cinnamon_app_system_lookup_app (appsys, basename);
g_free (basename);
return app;