[gtk+] filesystemmodel: Add a toggle for whether directories are filtered

[Benjamin Otte <otte src gnome org>]

commit 98fb16e30718fd42123e6d755c7780b09b1ff0b9
Author: Benjamin Otte <otte redhat com>
Date:   Mon Nov 7 15:18:40 2011 +0100

    filesystemmodel: Add a toggle for whether directories are filtered

 gtk/gtkfilesystemmodel.c |   51 +++++++++++++++++++++++++++++++++++++---------
 gtk/gtkfilesystemmodel.h |    2 +
 2 files changed, 43 insertions(+), 10 deletions(-)
---
diff --git a/gtk/gtkfilesystemmodel.c b/gtk/gtkfilesystemmodel.c
index 15497e6..7cfc5a1 100644
--- a/gtk/gtkfilesystemmodel.c
+++ b/gtk/gtkfilesystemmodel.c
@@ -169,6 +169,7 @@ struct _GtkFileSystemModel
   guint                 show_hidden :1; /* whether to show hidden files */
   guint                 show_folders :1;/* whether to show folders */
   guint                 show_files :1;  /* whether to show files */
+  guint                 filter_folders :1;/* whether filter applies to folders */
 };
 
 #define GTK_FILE_SYSTEM_MODEL_CLASS(klass)     (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_FILE_SYSTEM_MODEL, GtkFileSystemModelClass))
@@ -340,7 +341,7 @@ node_should_be_visible (GtkFileSystemModel *model, guint id)
   FileModelNode *node = get_node (model, id);
   GtkFileFilterInfo filter_info = { 0, };
   GtkFileFilterFlags required;
-  gboolean is_folder, result;
+  gboolean result;
   char *mime_type = NULL;
   char *filename = NULL;
   char *uri = NULL;
@@ -352,15 +353,19 @@ node_should_be_visible (GtkFileSystemModel *model, guint id)
       (g_file_info_get_is_hidden (node->info) || g_file_info_get_is_backup (node->info)))
     return FALSE;
 
-  is_folder = _gtk_file_info_consider_as_directory (node->info);
-  
-  /* wtf? */
-  if (model->show_folders != model->show_files &&
-      model->show_folders != is_folder)
-    return FALSE;
+  if (_gtk_file_info_consider_as_directory (node->info))
+    {
+      if (!model->show_folders)
+        return FALSE;
 
-  if (is_folder)
-    return TRUE;
+      if (!model->filter_folders)
+        return TRUE;
+    }
+  else
+    {
+      if (!model->show_files)
+        return FALSE;
+    }
 
   if (model->filter == NULL)
     return TRUE;
@@ -1035,6 +1040,7 @@ _gtk_file_system_model_init (GtkFileSystemModel *model)
   model->show_files = TRUE;
   model->show_folders = TRUE;
   model->show_hidden = FALSE;
+  model->filter_folders = FALSE;
 
   model->sort_column_id = GTK_TREE_SORTABLE_UNSORTED_SORT_COLUMN_ID;
 
@@ -1474,6 +1480,30 @@ _gtk_file_system_model_set_show_files (GtkFileSystemModel *model,
 }
 
 /**
+ * _gtk_file_system_model_set_filter_folders:
+ * @model: a #GtkFileSystemModel
+ * @filter_folders: whether the filter applies to folders
+ * 
+ * Sets whether the filter set by _gtk_file_system_model_set_filter()
+ * applies to folders. By default, it does not and folders are always
+ * visible.
+ **/
+void
+_gtk_file_system_model_set_filter_folders (GtkFileSystemModel *model,
+					   gboolean            filter_folders)
+{
+  g_return_if_fail (GTK_IS_FILE_SYSTEM_MODEL (model));
+
+  filter_folders = filter_folders != FALSE;
+
+  if (filter_folders != model->filter_folders)
+    {
+      model->filter_folders = filter_folders;
+      gtk_file_system_model_refilter_all (model);
+    }
+}
+
+/**
  * _gtk_file_system_model_get_cancellable:
  * @model: the model
  *
@@ -1815,7 +1845,8 @@ _gtk_file_system_model_update_file (GtkFileSystemModel *model,
  * @filter: (allow-none): %NULL or filter to use
  * 
  * Sets a filter to be used for deciding if a row should be visible or not.
- * Directories are always visible.
+ * Whether this filter applies to directories can be toggled with
+ * _gtk_file_system_model_set_filter_folders().
  **/
 void
 _gtk_file_system_model_set_filter (GtkFileSystemModel      *model,
diff --git a/gtk/gtkfilesystemmodel.h b/gtk/gtkfilesystemmodel.h
index a6fbab9..4a533da 100644
--- a/gtk/gtkfilesystemmodel.h
+++ b/gtk/gtkfilesystemmodel.h
@@ -80,6 +80,8 @@ void                _gtk_file_system_model_set_show_folders (GtkFileSystemModel
 							     gboolean            show_folders);
 void                _gtk_file_system_model_set_show_files   (GtkFileSystemModel *model,
 							     gboolean            show_files);
+void                _gtk_file_system_model_set_filter_folders (GtkFileSystemModel *model,
+							     gboolean            show_folders);
 void                _gtk_file_system_model_freeze_updates   (GtkFileSystemModel *model);
 void                _gtk_file_system_model_thaw_updates     (GtkFileSystemModel *model);
 void                _gtk_file_system_model_clear_cache      (GtkFileSystemModel *model,