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a11y: Move relationset updating to new vfunc

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This way, we don't create lots of cell accessibles when creating the
first one (because surely one is the parent/child of another who again
is a parent/child of another who again....)
This commit is contained in:
Benjamin Otte 2014-03-24 16:34:08 +01:00
parent 8374a58623
commit be7380a418
1 changed files with 68 additions and 23 deletions
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91
gtk/a11y/gtktreeviewaccessible.c
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@ -427,29 +427,6 @@ create_cell (GtkTreeView *treeview,
set_cell_data (treeview, accessible, cell);
_gtk_cell_accessible_update_cache (cell);
if (gtk_tree_view_get_expander_column (treeview) == column)
{
AtkRelationSet *relation_set;
AtkRelation* relation;
AtkObject *parent_node;
relation_set = atk_object_ref_relation_set (ATK_OBJECT (cell));
if (tree->parent_tree)
{
parent_node = ATK_OBJECT (peek_cell (accessible, tree->parent_tree, tree->parent_node, column));
if (parent_node == NULL)
parent_node = ATK_OBJECT (create_cell (treeview, accessible, tree->parent_tree, tree->parent_node, column));
}
else
parent_node = ATK_OBJECT (accessible);
relation = atk_relation_new (&parent_node, 1, ATK_RELATION_NODE_CHILD_OF);
atk_relation_set_add (relation_set, relation);
atk_object_add_relationship (parent_node, ATK_RELATION_NODE_PARENT_OF, ATK_OBJECT (cell));
g_object_unref (relation);
g_object_unref (relation_set);
}
return cell;
}
@ -1354,6 +1331,73 @@ gtk_tree_view_accessible_edit (GtkCellAccessibleParent *parent,
TRUE);
}
static void
gtk_tree_view_accessible_update_relationset (GtkCellAccessibleParent *parent,
GtkCellAccessible *cell,
AtkRelationSet *relationset)
{
GtkTreeViewAccessibleCellInfo *cell_info;
GtkTreeViewAccessible *accessible;
GtkTreeViewColumn *column;
GtkTreeView *treeview;
AtkRelation *relation;
GtkRBTree *tree;
GtkRBNode *node;
AtkObject *object;
/* Don't set relations on cells that aren't direct descendants of the treeview.
* So only set it on the container, not on the renderer accessibles */
if (atk_object_get_parent (ATK_OBJECT (cell)) != ATK_OBJECT (parent))
return;
accessible = GTK_TREE_VIEW_ACCESSIBLE (parent);
cell_info = find_cell_info (accessible, cell);
if (!cell_info)
return;
/* only set parent/child rows on the expander column */
treeview = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (parent)));
column = gtk_tree_view_get_expander_column (treeview);
if (column != cell_info->cell_col_ref)
return;
/* Update CHILD_OF relation to parent cell */
relation = atk_relation_set_get_relation_by_type (relationset, ATK_RELATION_NODE_CHILD_OF);
if (relation)
atk_relation_set_remove (relationset, relation);
if (cell_info->tree->parent_tree)
{
object = ATK_OBJECT (peek_cell (accessible, cell_info->tree->parent_tree, cell_info->tree->parent_node, column));
if (object == NULL)
object = ATK_OBJECT (create_cell (treeview, accessible, cell_info->tree->parent_tree, cell_info->tree->parent_node, column));
}
else
object = ATK_OBJECT (accessible);
atk_relation_set_add_relation_by_type (relationset, ATK_RELATION_NODE_CHILD_OF, object);
/* Update PARENT_OF relation for all child cells */
relation = atk_relation_set_get_relation_by_type (relationset, ATK_RELATION_NODE_PARENT_OF);
if (relation)
atk_relation_set_remove (relationset, relation);
tree = cell_info->node->children;
if (tree)
{
for (node = _gtk_rbtree_first (tree);
node != NULL;
node = _gtk_rbtree_next (tree, node))
{
object = ATK_OBJECT (peek_cell (accessible, tree, node, column));
if (object == NULL)
object = ATK_OBJECT (create_cell (treeview, accessible, tree, node, column));
atk_relation_set_add_relation_by_type (relationset, ATK_RELATION_NODE_PARENT_OF, ATK_OBJECT (object));
}
}
}
static void
gtk_cell_accessible_parent_interface_init (GtkCellAccessibleParentIface *iface)
{
@ -1365,6 +1409,7 @@ gtk_cell_accessible_parent_interface_init (GtkCellAccessibleParentIface *iface)
iface->expand_collapse = gtk_tree_view_accessible_expand_collapse;
iface->activate = gtk_tree_view_accessible_activate;
iface->edit = gtk_tree_view_accessible_edit;
iface->update_relationset = gtk_tree_view_accessible_update_relationset;
}
void