[easytag] Only add dummy browser row if the path is readable

[David King <davidk src gnome org>]

commit 81a1e7cf4bcb7897abd7c7ac4f6bfe0f0a038395
Author: Abhinav <abhijangda hotmail com>
Date:   Thu Feb 13 19:27:48 2014 +0530

    Only add dummy browser row if the path is readable
    
    Prevent empty rows from appearing in the browser when parent directories
    are deleted externally. Additionally, delete the parent directory from
    the tree if it is not found.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=722380

 src/browser.c |   20 +++++++++++++++++---
 1 files changed, 17 insertions(+), 3 deletions(-)
---
diff --git a/src/browser.c b/src/browser.c
index c88eba1..eb88d12 100644
--- a/src/browser.c
+++ b/src/browser.c
@@ -3004,6 +3004,7 @@ static void collapse_cb (GtkWidget *tree, GtkTreeIter *iter, GtkTreePath *treePa
     GIcon *icon;
     GFile *file;
     GFileInfo *fileinfo;
+    GError *error = NULL;
 
     g_return_if_fail (directoryTreeModel != NULL);
 
@@ -3014,7 +3015,7 @@ static void collapse_cb (GtkWidget *tree, GtkTreeIter *iter, GtkTreePath *treePa
     file = g_file_new_for_path (path);
     g_free (path);
     fileinfo = g_file_query_info (file, G_FILE_ATTRIBUTE_ACCESS_CAN_READ,
-                                  G_FILE_QUERY_INFO_NONE, NULL, NULL);
+                                  G_FILE_QUERY_INFO_NONE, NULL, &error);
     g_object_unref (file);
 
     if (fileinfo)
@@ -3057,8 +3058,21 @@ static void collapse_cb (GtkWidget *tree, GtkTreeIter *iter, GtkTreePath *treePa
                        TREE_COLUMN_ICON, icon, -1);
 #endif /* !G_OS_WIN32 */
 
-    /* Insert dummy node. */
-    gtk_tree_store_append (directoryTreeModel, &subNodeIter, iter);
+    /* Insert dummy node only if directory exists. */
+    if (error)
+    {
+        /* Remove the parent (missing) directory from the tree. */
+        if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
+        {
+            gtk_tree_store_remove (directoryTreeModel, iter);
+        }
+
+        g_error_free (error);
+    }
+    else
+    {
+        gtk_tree_store_append (directoryTreeModel, &subNodeIter, iter);
+    }
 
     g_object_unref (icon);
 }