[gtk/prop-list: 1/3] inspector: Make the resource list sortable

[Matthias Clasen <matthiasc src gnome org>]

commit b71ed284ad83431504f5cf57e0bf50b0081eec85
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Dec 8 16:02:14 2019 -0500

    inspector: Make the resource list sortable
    
    This shows how to make a tree sortable by sorting
    the individual levels. It also highlights the UI
    problems with it: whenever the sort changes, the
    whole tree collapes.

 gtk/inspector/resource-list.c | 62 +++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 60 insertions(+), 2 deletions(-)
---
diff --git a/gtk/inspector/resource-list.c b/gtk/inspector/resource-list.c
index 9be6f7387f..5dec48fc6c 100644
--- a/gtk/inspector/resource-list.c
+++ b/gtk/inspector/resource-list.c
@@ -599,9 +599,30 @@ stop_search (GtkWidget                *entry,
   gtk_search_bar_set_search_mode (GTK_SEARCH_BAR (rl->priv->search_bar), FALSE);
 }
 
+static char *
+holder_name (gpointer item)
+{
+  return g_strdup (resource_holder_get_name (RESOURCE_HOLDER (item)));
+}
+
+static int
+holder_count (gpointer item)
+{
+  return resource_holder_get_count (RESOURCE_HOLDER (item));
+}
+
+static gsize
+holder_size (gpointer item)
+{
+  return resource_holder_get_size (RESOURCE_HOLDER (item));
+}
+
 static void
 gtk_inspector_resource_list_init (GtkInspectorResourceList *rl)
 {
+  GtkSorter *sorter;
+  GtkExpression *expression;
+
   rl->priv = gtk_inspector_resource_list_get_instance_private (rl);
 
   gtk_widget_init_template (GTK_WIDGET (rl));
@@ -610,15 +631,52 @@ gtk_inspector_resource_list_init (GtkInspectorResourceList *rl)
 
   gtk_search_bar_connect_entry (GTK_SEARCH_BAR (rl->priv->search_bar),
                                 GTK_EDITABLE (rl->priv->search_entry));
+
+  expression = gtk_cclosure_expression_new (G_TYPE_STRING, NULL,
+                                            0, NULL,
+                                            (GCallback)holder_name,
+                                            NULL, NULL);
+
+  sorter = gtk_string_sorter_new ();
+  gtk_string_sorter_set_expression (GTK_STRING_SORTER (sorter), expression);
+  gtk_column_view_column_set_sorter (rl->priv->path, sorter);
+  g_object_unref (sorter);
+
+  gtk_expression_unref (expression);
+
+  expression = gtk_cclosure_expression_new (G_TYPE_INT, NULL,
+                                            0, NULL,
+                                            (GCallback)holder_count,
+                                            NULL, NULL);
+
+  sorter = gtk_numeric_sorter_new ();
+  gtk_numeric_sorter_set_expression (GTK_NUMERIC_SORTER (sorter), expression);
+  gtk_column_view_column_set_sorter (rl->priv->count, sorter);
+  g_object_unref (sorter);
+
+  gtk_expression_unref (expression);
+
+  expression = gtk_cclosure_expression_new (G_TYPE_UINT64, NULL,
+                                            0, NULL,
+                                            (GCallback)holder_size,
+                                            NULL, NULL);
+
+  sorter = gtk_numeric_sorter_new ();
+  gtk_numeric_sorter_set_expression (GTK_NUMERIC_SORTER (sorter), expression);
+  gtk_column_view_column_set_sorter (rl->priv->size, sorter);
+  g_object_unref (sorter);
+
+  gtk_expression_unref (expression);
 }
 
 static GListModel *
 create_model_for_object (gpointer item, gpointer data)
 {
   GListModel *model = resource_holder_get_children (RESOURCE_HOLDER (item));
+  GtkSorter *sorter = data;
 
   if (model)
-    return g_object_ref (model);
+    return G_LIST_MODEL (gtk_sort_list_model_new (model, sorter));
 
   return NULL;
 }
@@ -639,7 +697,7 @@ constructed (GObject *object)
                                                   root_model,
                                                   FALSE,
                                                   create_model_for_object,
-                                                  NULL,
+                                                  gtk_column_view_get_sorter (GTK_COLUMN_VIEW 
(rl->priv->list)),
                                                   NULL);
   rl->priv->selection = gtk_single_selection_new (G_LIST_MODEL (rl->priv->tree_model));
   g_object_unref (root_model);