From 25ef0aaeaec51224a2db0015d90e625b84bab8a1 Mon Sep 17 00:00:00 2001
From: Alexander Larsson <alexl@redhat.com>
Date: Mon, 21 Dec 2015 11:13:00 +0100
Subject: [PATCH] lib: Add xdg_app_installation_create_monitor

This just returns a new file monitor for the .changes file.
---
 lib/test-lib.c             | 20 ++++++++++++++++++++
 lib/xdg-app-installation.c | 26 +++++++++++++++++++++++++-
 lib/xdg-app-installation.h |  3 +++
 3 files changed, 48 insertions(+), 1 deletion(-)

diff --git a/lib/test-lib.c b/lib/test-lib.c
index a60d1964..83240034 100644
--- a/lib/test-lib.c
+++ b/lib/test-lib.c
@@ -14,6 +14,16 @@ progress_cb (const char *status,
   g_print ("status: %s, progress: %d estimating: %d, user_data: %p\n", status, progress, estimating, user_data);
 }
 
+static gboolean
+monitor_callback (GFileMonitor* monitor,
+                  GFile* child,
+                  GFile* other_file,
+                  GFileMonitorEvent eflags)
+{
+  g_print ("Database changed\n");
+  return TRUE;
+}
+
 int
 main (int argc, char *argv[])
 {
@@ -32,6 +42,16 @@ main (int argc, char *argv[])
       return 1;
     }
 
+  if (argc == 4)
+    {
+      GFileMonitor * monitor = xdg_app_installation_create_monitor (installation, NULL, NULL);
+      GMainLoop *main_loop;
+
+      g_signal_connect (monitor, "changed", (GCallback)monitor_callback, NULL);
+      main_loop = g_main_loop_new (NULL, FALSE);
+      g_main_loop_run (main_loop);
+    }
+
   if (argc == 3)
     {
       app1 = xdg_app_installation_install (installation,
diff --git a/lib/xdg-app-installation.c b/lib/xdg-app-installation.c
index c92856be..03fb668d 100644
--- a/lib/xdg-app-installation.c
+++ b/lib/xdg-app-installation.c
@@ -1050,7 +1050,7 @@ xdg_app_installation_list_remote_refs_sync (XdgAppInstallation *self,
 
 /**
  * xdg_app_installation_fetch_remote_ref_sync:
- * @self: a #XdgAppRemove
+ * @self: a #XdgAppInstallation
  * @cancellable: (nullable): a #GCancellable
  * @error: return location for a #GError
  *
@@ -1101,3 +1101,27 @@ xdg_app_installation_fetch_remote_ref_sync (XdgAppInstallation *self,
                "Reference %s doesn't exist in remote\n", ref);
   return NULL;
 }
+
+/**
+ * xdg_app_installation_create_monitor:
+ * @self: a #XdgAppInstallation
+ * @cancellable: (nullable): a #GCancellable
+ * @error: return location for a #GError
+ *
+ * Gets the current remote branch of a ref in the remote.
+ *
+ * Returns: (transfer full): a new #GFileMonitor instance, or %NULL on error
+ */
+GFileMonitor *
+xdg_app_installation_create_monitor (XdgAppInstallation  *self,
+                                     GCancellable        *cancellable,
+                                     GError             **error)
+{
+  XdgAppInstallationPrivate *priv = xdg_app_installation_get_instance_private (self);
+  g_autoptr(GFile) path = NULL;
+
+  path = xdg_app_dir_get_changed_path (priv->dir);
+
+  return g_file_monitor_file (path, G_FILE_MONITOR_NONE,
+                              cancellable, error);
+}
diff --git a/lib/xdg-app-installation.h b/lib/xdg-app-installation.h
index c9dfaea3..a86c06e9 100644
--- a/lib/xdg-app-installation.h
+++ b/lib/xdg-app-installation.h
@@ -78,6 +78,9 @@ XDG_APP_EXTERN gboolean             xdg_app_installation_launch
                                                                                     const char          *commit,
                                                                                     GCancellable        *cancellable,
                                                                                     GError             **error);
+XDG_APP_EXTERN GFileMonitor        *xdg_app_installation_create_monitor            (XdgAppInstallation  *self,
+                                                                                    GCancellable        *cancellable,
+                                                                                    GError             **error);
 XDG_APP_EXTERN GPtrArray           *xdg_app_installation_list_installed_refs       (XdgAppInstallation  *self,
                                                                                     GCancellable        *cancellable,
                                                                                     GError             **error);