Extended gtk_cell_area_apply_attributes() to account for expander/expanded cells

The state of expanded cells must come from the view, since these states
can vary across views accessing the same model (also "finished up" the
applying of attributes code).

1 files changed, 30 insertions, 1 deletions

diff --git a/gtk/gtkcellarea.c b/gtk/gtkcellarea.c
index e77c2280ce..634ff4906c 100644
--- a/gtk/gtkcellarea.c
+++ b/gtk/gtkcellarea.c
@@ -117,6 +117,8 @@ typedef struct {
   GtkCellArea  *area;
   GtkTreeModel *model;
   GtkTreeIter  *iter;
+  gboolean      is_expander;
+  gboolean      is_expanded;
 } AttributeData;
 
 struct _GtkCellAreaPrivate
@@ -926,6 +928,22 @@ apply_cell_attributes (GtkCellRenderer *renderer,
   CellAttribute *attribute;
   GSList        *list;
   GValue         value = { 0, };
+  gboolean       is_expander;
+  gboolean       is_expanded;
+
+  g_object_freeze_notify (G_OBJECT (renderer));
+
+  /* Whether a row expands or is presently expanded can only be 
+   * provided by the view (as these states can vary across views
+   * accessing the same model).
+   */
+  g_object_get (renderer, "is-expander", &is_expander, NULL);
+  if (is_expander != data->is_expander)
+    g_object_set (renderer, "is-expander", data->is_expander, NULL);
+  
+  g_object_get (renderer, "is-expanded", &is_expanded, NULL);
+  if (is_expanded != data->is_expanded)
+    g_object_set (renderer, "is-expanded", data->is_expanded, NULL);
 
   /* Apply the attributes directly to the renderer */
   for (list = info->attributes; list; list = list->next)
@@ -942,12 +960,16 @@ apply_cell_attributes (GtkCellRenderer *renderer,
   if (info->func)
     info->func (GTK_CELL_LAYOUT (data->area), renderer,
 		data->model, data->iter, info->data);
+
+  g_object_thaw_notify (G_OBJECT (renderer));
 }
 
 void
 gtk_cell_area_apply_attributes (GtkCellArea  *area,
 				GtkTreeModel *tree_model,
-				GtkTreeIter  *iter)
+				GtkTreeIter  *iter,
+				gboolean      is_expander,
+				gboolean      is_expanded)
 {
   GtkCellAreaPrivate *priv;
   AttributeData       data;
@@ -958,6 +980,13 @@ gtk_cell_area_apply_attributes (GtkCellArea  *area,
 
   priv = area->priv;
 
+  /* Feed in data needed to apply to every renderer */
+  data.area        = area;
+  data.model       = tree_model;
+  data.iter        = iter;
+  data.is_expander = is_expander;
+  data.is_expanded = is_expanded;
+
   /* Go over any cells that have attributes or custom GtkCellLayoutDataFuncs and
    * apply the data from the treemodel */
   g_hash_table_foreach (priv->cell_info, (GHFunc)apply_cell_attributes, &data);