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gnome-shell/src/shell-window-tracker.c
Adel Gadllah 40a8e9c1a6 Fix tracking of single-process multi app cases 
When starting oocalc or ooimpress from oowriter's menu get_app_for_window,
fails to recognize the newly started up as such, which result into the appMenu
still showing "Openoffice.org Writer" as app name.

Fix this by trying to window itself first before using the group for finding the app.

https://bugzilla.gnome.org/show_bug.cgi?id=611288
2010-03-01 19:29:39 +01:00

872 lines
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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>
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn.h>
#include "shell-window-tracker.h"
#include "shell-app-system.h"
#include "shell-app-private.h"
#include "shell-texture-cache.h"
#include "shell-global.h"
#include "shell-marshal.h"
#include "display.h"
#include "window.h"
#include "group.h"
#include "util.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:shell-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.
*/
/* Title patterns to detect apps that don't set WM class as needed.
* Format: application ID, title regex pattern, NULL (for GRegex) */
static struct
{
const char *app_id;
const char *pattern;
GRegex *regex;
} title_patterns[] = {
{"mozilla-firefox.desktop", ".* - Mozilla Firefox", NULL}, \
{"openoffice.org-writer.desktop", ".* - OpenOffice.org Writer$", NULL}, \
{"openoffice.org-calc.desktop", ".* - OpenOffice.org Calc$", NULL}, \
{"openoffice.org-impress.desktop", ".* - OpenOffice.org Impress$", NULL}, \
{"openoffice.org-draw.desktop", ".* - OpenOffice.org Draw$", NULL}, \
{"openoffice.org-base.desktop", ".* - OpenOffice.org Base$", NULL}, \
{"openoffice.org-math.desktop", ".* - OpenOffice.org Math$", NULL}, \
{NULL, NULL, NULL}
};
struct _ShellWindowTracker
{
GObject parent;
guint idle_focus_change_id;
ShellApp *focus_app;
/* <MetaWindow * window, ShellApp *app> */
GHashTable *window_to_app;
/* <const char *id, ShellApp *app> */
GHashTable *running_apps;
};
G_DEFINE_TYPE (ShellWindowTracker, shell_window_tracker, G_TYPE_OBJECT);
enum {
PROP_0,
PROP_FOCUS_APP
};
enum {
APP_RUNNING_CHANGED,
STARTUP_SEQUENCE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
static void shell_window_tracker_finalize (GObject *object);
static void on_focus_window_changed (MetaDisplay *display, GParamSpec *spec, ShellWindowTracker *tracker);
static void track_window (ShellWindowTracker *monitor, MetaWindow *window);
static void disassociate_window (ShellWindowTracker *monitor, MetaWindow *window);
static void
shell_window_tracker_get_property (GObject *gobject,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ShellWindowTracker *tracker = SHELL_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
shell_window_tracker_class_init (ShellWindowTrackerClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = shell_window_tracker_get_property;
gobject_class->finalize = shell_window_tracker_finalize;
g_object_class_install_property (gobject_class,
PROP_FOCUS_APP,
g_param_spec_object ("focus-app",
"Focus App",
"Focused application",
SHELL_TYPE_APP,
G_PARAM_READABLE));
signals[APP_RUNNING_CHANGED] = g_signal_new ("app-running-changed",
SHELL_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1,
SHELL_TYPE_APP);
signals[STARTUP_SEQUENCE_CHANGED] = g_signal_new ("startup-sequence-changed",
SHELL_TYPE_WINDOW_TRACKER,
G_SIGNAL_RUN_LAST,
0,
NULL, NULL,
g_cclosure_marshal_VOID__BOXED,
G_TYPE_NONE, 1, SHELL_TYPE_STARTUP_SEQUENCE);
}
/**
* get_app_id_from_title:
*
* Use a window's "title" property to determine an application ID.
* This is a temporary crutch for a few applications until we get
* them correctly setting their WM_CLASS.
*/
static const char *
get_app_id_from_title (MetaWindow *window)
{
static gboolean patterns_initialized = FALSE;
const char *title;
int i;
title = meta_window_get_title (window);
if (!patterns_initialized) /* Generate match patterns once for all */
{
patterns_initialized = TRUE;
for (i = 0; title_patterns[i].app_id; i++)
{
title_patterns[i].regex = g_regex_new (title_patterns[i].pattern,
0, 0, NULL);
}
}
/* Match window title patterns to identifiers for non-standard apps */
if (title)
{
for (i = 0; title_patterns[i].app_id; i++)
{
if (g_regex_match (title_patterns[i].regex, title, 0, NULL))
{
/* Matched, return the app id we want */
return title_patterns[i].app_id;
}
}
}
return NULL;
}
/**
* get_appid_from_window:
*
* Turn the WM_CLASS property into our best guess at a .desktop file id.
*/
static char *
get_appid_from_window (MetaWindow *window)
{
const char *wmclass;
char *appid_guess;
wmclass = meta_window_get_wm_class (window);
if (!wmclass)
return NULL;
appid_guess = g_ascii_strdown (wmclass, -1);
/* This handles "Fedora Eclipse", probably others.
* Note g_strdelimit is modify-in-place. */
g_strdelimit (appid_guess, " ", '-');
return appid_guess;
}
/**
* window_is_tracked:
*
* We don't attempt to associate override-redirect windows with applications
* at all, since there's no reason to do so yet.
*
* Returns: %TRUE iff we want to scan this window for application association
*/
static gboolean
window_is_tracked (MetaWindow *window)
{
if (meta_window_is_override_redirect (window))
return FALSE;
return TRUE;
}
/**
* shell_window_tracker_is_window_interesting:
*
* The ShellWindowTracker 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 iff a window is "interesting"
*/
gboolean
shell_window_tracker_is_window_interesting (MetaWindow *window)
{
if (!window_is_tracked (window))
return FALSE;
if (meta_window_is_skip_taskbar (window))
return FALSE;
switch (meta_window_get_window_type (window))
{
/* 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;
}
return TRUE;
}
/**
* get_app_for_window_direct:
*
* Looks only at the given window, and attempts to determine
* an application based on WM_CLASS. If that fails, then
* a "transient" application is created.
*
* Return value: (transfer full): A newly-referenced #ShellApp
*/
static ShellApp *
get_app_for_window_direct (MetaWindow *window)
{
ShellApp *app;
ShellAppSystem *appsys;
char *wmclass;
char *with_desktop;
appsys = shell_app_system_get_default ();
wmclass = get_appid_from_window (window);
if (!wmclass)
return shell_app_system_get_app_for_window (appsys, window);
with_desktop = g_strjoin (NULL, wmclass, ".desktop", NULL);
g_free (wmclass);
app = shell_app_system_lookup_heuristic_basename (appsys, with_desktop);
g_free (with_desktop);
if (app == NULL)
{
const char *id = get_app_id_from_title (window);
if (id != NULL)
app = shell_app_system_get_app (appsys, id);
}
if (app == NULL)
app = shell_app_system_get_app_for_window (appsys, window);
return app;
}
/**
* 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.
*/
static ShellApp *
get_app_for_window (ShellWindowTracker *monitor,
MetaWindow *window)
{
ShellApp *result;
MetaWindow *source_window;
GSList *group_windows;
MetaGroup *group;
GSList *iter;
result = NULL;
if (meta_window_get_window_type (window) == META_WINDOW_NORMAL)
{
result = g_hash_table_lookup (monitor->window_to_app, window);
if (result != NULL)
{
g_object_ref (result);
return result;
}
else
return get_app_for_window_direct (window);
}
group = meta_window_get_group (window);
if (group == NULL)
group_windows = g_slist_prepend (NULL, window);
else
group_windows = meta_group_list_windows (group);
source_window = window;
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;
source_window = group_window;
result = g_hash_table_lookup (monitor->window_to_app, group_window);
if (result)
break;
}
g_slist_free (group_windows);
if (result != NULL)
{
g_object_ref (result);
return result;
}
return get_app_for_window_direct (source_window);
}
const char *
_shell_window_tracker_get_app_context (ShellWindowTracker *tracker, ShellApp *app)
{
return "";
}
static void
on_transient_window_title_changed (MetaWindow *window,
GParamSpec *spec,
ShellWindowTracker *self)
{
ShellAppSystem *appsys;
ShellApp *app;
const char *id;
/* Check if we now have a mapping using the window title */
id = get_app_id_from_title (window);
if (id == NULL)
return;
appsys = shell_app_system_get_default ();
app = shell_app_system_get_app (appsys, id);
if (app == NULL)
return;
g_object_unref (app);
/* We found an app, don't listen for further title changes */
g_signal_handlers_disconnect_by_func (window, G_CALLBACK (on_transient_window_title_changed),
self);
/* It's simplest to just treat this as a remove + add. */
disassociate_window (self, window);
track_window (self, window);
}
static void
track_window (ShellWindowTracker *self,
MetaWindow *window)
{
ShellApp *app;
if (!window_is_tracked (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);
/* However, only put interesting windows in the window list for an app. */
if (!shell_window_tracker_is_window_interesting (window))
return;
if (shell_app_is_transient (app))
{
/* For a transient application, it's possible one of our title regexps
* will match at a later time, i.e. the application may not have set
* its title fully at the time it initially maps a window. Watch
* for title changes and recompute the app.
*/
g_signal_connect (window, "notify::title", G_CALLBACK (on_transient_window_title_changed), self);
}
_shell_app_add_window (app, window);
if (shell_app_get_n_windows (app) == 1)
{
/* key is owned by the app */
g_hash_table_insert (self->running_apps, (char*)shell_app_get_id (app),
app);
g_signal_emit (self, signals[APP_RUNNING_CHANGED], 0, app);
}
}
static void
shell_window_tracker_on_window_added (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (user_data);
track_window (self, window);
}
static void
disassociate_window (ShellWindowTracker *self,
MetaWindow *window)
{
ShellApp *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);
_shell_app_remove_window (app, window);
if (shell_app_get_n_windows (app) == 0)
{
const char *id = shell_app_get_id (app);
g_hash_table_remove (self->running_apps, id);
g_signal_emit (self, signals[APP_RUNNING_CHANGED], 0, app);
}
g_object_unref (app);
}
static void
shell_window_tracker_on_window_removed (MetaWorkspace *workspace,
MetaWindow *window,
gpointer user_data)
{
disassociate_window (SHELL_WINDOW_TRACKER (user_data), window);
}
static void
load_initial_windows (ShellWindowTracker *monitor)
{
GList *workspaces, *iter;
MetaScreen *screen = shell_global_get_screen (shell_global_get ());
workspaces = meta_screen_get_workspaces (screen);
for (iter = workspaces; iter; iter = iter->next)
{
MetaWorkspace *workspace = iter->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 (monitor, window);
}
g_list_free (windows);
}
}
static void
shell_window_tracker_on_n_workspaces_changed (MetaScreen *screen,
GParamSpec *pspec,
gpointer user_data)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (user_data);
GList *workspaces, *iter;
workspaces = meta_screen_get_workspaces (screen);
for (iter = workspaces; iter; iter = iter->next)
{
MetaWorkspace *workspace = iter->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,
shell_window_tracker_on_window_added,
self);
g_signal_handlers_disconnect_by_func (workspace,
shell_window_tracker_on_window_removed,
self);
g_signal_connect (workspace, "window-added",
G_CALLBACK (shell_window_tracker_on_window_added), self);
g_signal_connect (workspace, "window-removed",
G_CALLBACK (shell_window_tracker_on_window_removed), self);
}
}
static void
init_window_tracking (ShellWindowTracker *self)
{
MetaDisplay *display;
MetaScreen *screen = shell_global_get_screen (shell_global_get ());
g_signal_connect (screen, "notify::n-workspaces",
G_CALLBACK (shell_window_tracker_on_n_workspaces_changed), self);
display = meta_screen_get_display (screen);
g_signal_connect (display, "notify::focus-window",
G_CALLBACK (on_focus_window_changed), self);
shell_window_tracker_on_n_workspaces_changed (screen, NULL, self);
}
static void
on_startup_sequence_changed (MetaScreen *screen,
SnStartupSequence *sequence,
ShellWindowTracker *self)
{
/* Just proxy the signal */
g_signal_emit (G_OBJECT (self), signals[STARTUP_SEQUENCE_CHANGED], 0, sequence);
}
static void
shell_window_tracker_init (ShellWindowTracker *self)
{
MetaScreen *screen;
self->window_to_app = g_hash_table_new_full (g_direct_hash, g_direct_equal,
NULL, (GDestroyNotify) g_object_unref);
self->running_apps = g_hash_table_new (g_str_hash, g_str_equal);
screen = shell_global_get_screen (shell_global_get ());
g_signal_connect (G_OBJECT (screen), "startup-sequence-changed",
G_CALLBACK (on_startup_sequence_changed), self);
load_initial_windows (self);
init_window_tracking (self);
}
static void
shell_window_tracker_finalize (GObject *object)
{
ShellWindowTracker *self = SHELL_WINDOW_TRACKER (object);
int i;
g_hash_table_destroy (self->running_apps);
g_hash_table_destroy (self->window_to_app);
for (i = 0; title_patterns[i].app_id; i++)
g_regex_unref (title_patterns[i].regex);
G_OBJECT_CLASS (shell_window_tracker_parent_class)->finalize(object);
}
/**
* shell_window_tracker_get_window_app
* @monitor: An app monitor instance
* @metawin: A #MetaWindow
*
* Returns: (transfer full): Application associated with window
*/
ShellApp *
shell_window_tracker_get_window_app (ShellWindowTracker *monitor,
MetaWindow *metawin)
{
MetaWindow *transient_for;
ShellApp *app;
transient_for = meta_window_get_transient_for (metawin);
if (transient_for != NULL)
metawin = transient_for;
app = g_hash_table_lookup (monitor->window_to_app, metawin);
if (app)
g_object_ref (app);
return app;
}
/**
* shell_app_system_get_from_pid:
* @self; A #ShellAppSystem
* @pid: A Unix process identifier
*
* Look up the application corresponding to a process.
*
* Returns: (transfer full): A #ShellApp, or %NULL if none
*/
ShellApp *
shell_window_tracker_get_app_from_pid (ShellWindowTracker *self,
int pid)
{
ShellGlobal *global = shell_global_get ();
GList *windows, *iter;
windows = shell_global_get_windows (global);
for (iter = windows; iter; iter = iter->next)
{
MutterWindow *win = iter->data;
MetaWindow *metawin;
int windowpid;
ShellApp *app;
metawin = mutter_window_get_meta_window (win);
windowpid = meta_window_get_pid (metawin);
if (windowpid != pid)
continue;
app = shell_window_tracker_get_window_app (self, metawin);
if (app)
return app;
}
return NULL;
}
/**
* shell_window_tracker_get_running_apps:
* @monitor: An app monitor instance
* @context: Activity identifier
*
* Returns the set of applications which currently have at least one open
* window in the given context. The returned list will be sorted
* by shell_app_compare().
*
* Returns: (element-type ShellApp) (transfer full): Active applications
*/
GSList *
shell_window_tracker_get_running_apps (ShellWindowTracker *monitor,
const char *context)
{
gpointer key, value;
GSList *ret;
GHashTableIter iter;
g_hash_table_iter_init (&iter, monitor->running_apps);
ret = NULL;
while (g_hash_table_iter_next (&iter, &key, &value))
{
ShellApp *app = value;
if (strcmp (context, _shell_window_tracker_get_app_context (monitor, app)) != 0)
continue;
ret = g_slist_prepend (ret, g_object_ref (app));
}
ret = g_slist_sort (ret, (GCompareFunc)shell_app_compare);
return ret;
}
static gboolean
idle_handle_focus_change (gpointer data)
{
MetaScreen *screen;
MetaDisplay *display;
ShellWindowTracker *tracker = data;
MetaWindow *new_focus_win;
ShellApp *new_focus_app;
tracker->idle_focus_change_id = 0;
screen = shell_global_get_screen (shell_global_get ());
display = meta_screen_get_display (screen);
new_focus_win = meta_display_get_focus_window (display);
new_focus_app = new_focus_win ? g_hash_table_lookup (tracker->window_to_app, new_focus_win) : NULL;
if (new_focus_app == tracker->focus_app)
return FALSE;
if (tracker->focus_app != NULL)
g_object_unref (tracker->focus_app);
if (tracker->focus_app != NULL
&& (!new_focus_win || !new_focus_app))
tracker->focus_app = NULL;
else
tracker->focus_app = g_object_ref (new_focus_app);
g_object_notify (G_OBJECT (tracker), "focus-app");
return FALSE;
}
static void
on_focus_window_changed (MetaDisplay *display,
GParamSpec *spec,
ShellWindowTracker *self)
{
if (self->idle_focus_change_id != 0)
return;
self->idle_focus_change_id = meta_later_add (META_LATER_BEFORE_REDRAW, idle_handle_focus_change, self, NULL);
}
/**
* shell_window_tracker_get_startup_sequences:
* @self:
*
* Returns: (transfer none) (element-type ShellStartupSequence): Currently active startup sequences
*/
GSList *
shell_window_tracker_get_startup_sequences (ShellWindowTracker *self)
{
ShellGlobal *global = shell_global_get ();
MetaScreen *screen = shell_global_get_screen (global);
return meta_screen_get_startup_sequences (screen);
}
/* sn_startup_sequence_ref returns void, so make a
* wrapper which returns self */
static SnStartupSequence *
sequence_ref (SnStartupSequence *sequence)
{
sn_startup_sequence_ref (sequence);
return sequence;
}
GType
shell_startup_sequence_get_type (void)
{
static GType gtype = G_TYPE_INVALID;
if (gtype == G_TYPE_INVALID)
{
gtype = g_boxed_type_register_static ("ShellStartupSequence",
(GBoxedCopyFunc)sequence_ref,
(GBoxedFreeFunc)sn_startup_sequence_unref);
}
return gtype;
}
const char *
shell_startup_sequence_get_id (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_id ((SnStartupSequence*)sequence);
}
const char *
shell_startup_sequence_get_name (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_name ((SnStartupSequence*)sequence);
}
gboolean
shell_startup_sequence_get_completed (ShellStartupSequence *sequence)
{
return sn_startup_sequence_get_completed ((SnStartupSequence*)sequence);
}
/**
* shell_startup_sequence_create_icon:
* @sequence:
* @size: Size in pixels of icon
*
* Returns: (transfer none): A new #ClutterTexture containing an icon for the sequence
*/
ClutterActor *
shell_startup_sequence_create_icon (ShellStartupSequence *sequence, guint size)
{
GIcon *themed;
const char *icon_name;
ClutterActor *texture;
icon_name = sn_startup_sequence_get_icon_name ((SnStartupSequence*)sequence);
if (!icon_name)
{
texture = clutter_texture_new ();
clutter_actor_set_size (texture, size, size);
return texture;
}
themed = g_themed_icon_new (icon_name);
texture = shell_texture_cache_load_gicon (shell_texture_cache_get_default (),
themed, size);
g_object_unref (G_OBJECT (themed));
return texture;
}
/**
* shell_window_tracker_get_default:
*
* Return Value: (transfer none): The global #ShellWindowTracker instance
*/
ShellWindowTracker *
shell_window_tracker_get_default ()
{
static ShellWindowTracker *instance;
if (instance == NULL)
instance = g_object_new (SHELL_TYPE_WINDOW_TRACKER, NULL);
return instance;
}
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