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app-system: Improve StartupWMClass heuristics

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Our StartUpWMClass heuristics use a StartupWMClass -> .desktop ID
mapping built from the list of all installed applications. In case
of multiple .desktop files setting the same StartupWMClass, we
currently simply pick the last one returned by g_app_info_get_all (),
which can be a bit surprising:
A window with WM_CLASS 'emacs', launched through a .desktop file
named 'emacs.desktop' with a StartupWMClass of 'emacs' maps to ...
'emacsclient.desktop'!
Make this case a bit less random by preferring the app info whose
ID matches the StartupWMClass.

https://bugzilla.gnome.org/show_bug.cgi?id=751541
This commit is contained in:
Florian Müllner 2015-06-26 13:46:11 +02:00
parent 7bdd1c625c
commit eac303f84c
1 changed files with 8 additions and 2 deletions
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10
src/shell-app-system.c
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@ -83,12 +83,18 @@ scan_startup_wm_class_to_id (ShellAppSystem *self)
for (l = apps; l != NULL; l = l->next)
{
GAppInfo *info = l->data;
const char *startup_wm_class, *id;
const char *startup_wm_class, *id, *old_id;
id = g_app_info_get_id (info);
startup_wm_class = g_desktop_app_info_get_startup_wm_class (G_DESKTOP_APP_INFO (info));
if (startup_wm_class != NULL)
if (startup_wm_class == NULL)
continue;
/* In case multiple .desktop files set the same StartupWMClass, prefer
* the one where ID and StartupWMClass match */
old_id = g_hash_table_lookup (priv->startup_wm_class_to_id, startup_wm_class);
if (old_id == NULL || strcmp (id, startup_wm_class) == 0)
g_hash_table_insert (priv->startup_wm_class_to_id,
g_strdup (startup_wm_class), g_strdup (id));
}