[gnome-shell] shell-app: Consider desktop actions in can_open_new_window()

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit 1e6cb43815964454889825373c4e793f155265a5
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Aug 6 13:19:59 2019 +0200

    shell-app: Consider desktop actions in can_open_new_window()
    
    We currently only consider a remote "app.new-window" action when running,
    but not a fixed "new-window" action in the .desktop file. The latter is
    clearly useful as well, in particular as open_new_window() already does,
    so add it.
    
    https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/665

 src/shell-app.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
---
diff --git a/src/shell-app.c b/src/shell-app.c
index b8fd9384f..7968e3358 100644
--- a/src/shell-app.c
+++ b/src/shell-app.c
@@ -601,6 +601,8 @@ shell_app_can_open_new_window (ShellApp *app)
 {
   ShellAppRunningState *state;
   MetaWindow *window;
+  GDesktopAppInfo *desktop_info;
+  const char * const *desktop_actions;
 
   /* Apps that are not running can always open new windows, because
      activating them would open the first one */
@@ -619,12 +621,18 @@ shell_app_can_open_new_window (ShellApp *app)
   if (!app->info)
     return FALSE;
 
+  desktop_info = G_DESKTOP_APP_INFO (app->info);
+
   /* If the app is explicitly telling us, then we know for sure */
-  if (g_desktop_app_info_has_key (G_DESKTOP_APP_INFO (app->info),
-                                  "X-GNOME-SingleWindow"))
-    return !g_desktop_app_info_get_boolean (G_DESKTOP_APP_INFO (app->info),
+  if (g_desktop_app_info_has_key (desktop_info, "X-GNOME-SingleWindow"))
+    return !g_desktop_app_info_get_boolean (desktop_info,
                                             "X-GNOME-SingleWindow");
 
+  /* If it has a new-window desktop action, it should be able to */
+  desktop_actions = g_desktop_app_info_list_actions (desktop_info);
+  if (desktop_actions && g_strv_contains (desktop_actions, "new-window"))
+    return TRUE;
+
   /* If this is a unique GtkApplication, and we don't have a new-window, then
      probably we can't