/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) version 3.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with the program; if not, see <http://www.gnu.org/licenses/>
*
*
* Authors:
* Tim Wo <tim.wo@sun.com>
*
* Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
*
*/
#include <config.h>
#include <atk/atk.h>
#include "a11y/gal-a11y-util.h"
#include "table/e-cell-tree.h"
#include "table/e-table.h"
#include "table/e-tree-table-adapter.h"
#include <glib/gi18n.h>
#include "gal-a11y-e-cell-tree.h"
#include "gal-a11y-e-cell-registry.h"
#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yECellTreeClass))
static AtkObjectClass *a11y_parent_class;
#define A11Y_PARENT_TYPE (gal_a11y_e_cell_get_type ())
#define d(x)
static void
ectr_model_row_changed_cb (ETableModel *etm,
gint row,
GalA11yECell *a11y)
{
ETreePath node;
ETreeModel *tree_model;
ETreeTableAdapter *tree_table_adapter;
g_return_if_fail (a11y);
if (a11y->row != row)
return;
node = e_table_model_value_at (etm, -1, a11y->row);
tree_model = e_table_model_value_at (etm, -2, a11y->row);
tree_table_adapter = e_table_model_value_at (etm, -3, a11y->row);
if (e_tree_model_node_is_expandable (tree_model, node)) {
gboolean is_exp = e_tree_table_adapter_node_is_expanded (tree_table_adapter, node);
if (is_exp)
gal_a11y_e_cell_add_state (a11y, ATK_STATE_EXPANDED, TRUE);
else
gal_a11y_e_cell_remove_state (a11y, ATK_STATE_EXPANDED, TRUE);
}
}
static void
kill_view_cb(ECellView *subcell_view,
gpointer psubcell_a11ies)
{
GList *node;
GList *subcell_a11ies = (GList *) psubcell_a11ies;
GalA11yECell *subcell;
for (node = subcell_a11ies; node != NULL; node = g_list_next (node))
{
subcell = GAL_A11Y_E_CELL(node->data);
if (subcell && subcell->cell_view == subcell_view)
{
d(fprintf(stderr, "subcell_view %p deleted before the a11y object %p\n", subcell_view, subcell));
subcell->cell_view = NULL;
}
}
}
static void
ectr_subcell_weak_ref (GalA11yECellTree *a11y,
GalA11yECell *subcell_a11y)
{
ECellView *subcell_view = subcell_a11y ? subcell_a11y->cell_view : NULL;
if (subcell_a11y && subcell_view && subcell_view->kill_view_cb_data)
subcell_view->kill_view_cb_data = g_list_remove(subcell_view->kill_view_cb_data, subcell_a11y);
g_signal_handler_disconnect (GAL_A11Y_E_CELL (a11y)->item->table_model,
a11y->model_row_changed_id);
g_object_unref (a11y);
}
static void
ectr_do_action_expand (AtkAction *action)
{
GalA11yECell *a11y;
ETableModel *table_model;
ETreePath node;
ETreeModel *tree_model;
ETreeTableAdapter *tree_table_adapter;
a11y = GAL_A11Y_E_CELL (action);
table_model = a11y->item->table_model;
node = e_table_model_value_at (table_model, -1, a11y->row);
tree_model = e_table_model_value_at (table_model, -2, a11y->row);
tree_table_adapter = e_table_model_value_at (table_model, -3, a11y->row);
if (e_tree_model_node_is_expandable (tree_model, node)) {
e_tree_table_adapter_node_set_expanded (tree_table_adapter,
node,
TRUE);
gal_a11y_e_cell_add_state (a11y, ATK_STATE_EXPANDED, TRUE);
}
}
static void
ectr_do_action_collapse (AtkAction *action)
{
GalA11yECell *a11y;
ETableModel *table_model;
ETreePath node;
ETreeModel *tree_model;
ETreeTableAdapter *tree_table_adapter;
a11y = GAL_A11Y_E_CELL (action);
table_model = a11y->item->table_model;
node = e_table_model_value_at (table_model, -1, a11y->row);
tree_model = e_table_model_value_at (table_model, -2, a11y->row);
tree_table_adapter = e_table_model_value_at (table_model, -3, a11y->row);
if (e_tree_model_node_is_expandable (tree_model, node)) {
e_tree_table_adapter_node_set_expanded (tree_table_adapter,
node,
FALSE);
gal_a11y_e_cell_remove_state (a11y, ATK_STATE_EXPANDED, TRUE);
}
}
static void
ectr_class_init (GalA11yECellTreeClass *klass)
{
a11y_parent_class = g_type_class_ref (A11Y_PARENT_TYPE);
}
static void
ectr_init (GalA11yECellTree *a11y)
{
}
GType
gal_a11y_e_cell_tree_get_type (void)
{
static GType type = 0;
if (!type) {
GTypeInfo info = {
sizeof (GalA11yECellTreeClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) ectr_class_init,
(GClassFinalizeFunc) NULL,
NULL, /* class_data */
sizeof (GalA11yECellTree),
0,
(GInstanceInitFunc) ectr_init,
NULL /* value_cell_text */
};
type = g_type_register_static (A11Y_PARENT_TYPE, "GalA11yECellTree", &info, 0);
gal_a11y_e_cell_type_add_action_interface (type);
}
return type;
}
AtkObject *
gal_a11y_e_cell_tree_new (ETableItem *item,
ECellView *cell_view,
AtkObject *parent,
gint model_col,
gint view_col,
gint row)
{
AtkObject *subcell_a11y;
GalA11yECellTree *a11y;
ETreePath node;
ETreeModel *tree_model;
ETreeTableAdapter *tree_table_adapter;
ECellView *subcell_view;
subcell_view = e_cell_tree_view_get_subcell_view (cell_view);
if (subcell_view->ecell) {
subcell_a11y = gal_a11y_e_cell_registry_get_object (NULL,
item,
subcell_view,
parent,
model_col,
view_col,
row);
gal_a11y_e_cell_add_action (GAL_A11Y_E_CELL (subcell_a11y),
"expand",
/* Translators: description of an "expand" action */
_("expands the row in the ETree containing this cell"),
NULL,
(ACTION_FUNC)ectr_do_action_expand);
gal_a11y_e_cell_add_action (GAL_A11Y_E_CELL (subcell_a11y),
"collapse",
/* Translators: description of a "collapse" action */
_("collapses the row in the ETree containing this cell"),
NULL,
(ACTION_FUNC)ectr_do_action_collapse);
/* init AtkStates for the cell's a11y object */
node = e_table_model_value_at (item->table_model, -1, row);
tree_model = e_table_model_value_at (item->table_model, -2, row);
tree_table_adapter = e_table_model_value_at (item->table_model, -3, row);
if (e_tree_model_node_is_expandable (tree_model, node)) {
gal_a11y_e_cell_add_state (GAL_A11Y_E_CELL (subcell_a11y), ATK_STATE_EXPANDABLE, FALSE);
if (e_tree_table_adapter_node_is_expanded (tree_table_adapter, node))
gal_a11y_e_cell_add_state (GAL_A11Y_E_CELL (subcell_a11y), ATK_STATE_EXPANDED, FALSE);
}
}
else
subcell_a11y = NULL;
/* create a companion a11y object, this object has type GalA11yECellTree
and it connects to some signals to determine whether a tree cell is
expanded or collapsed */
a11y = g_object_new (gal_a11y_e_cell_tree_get_type (), NULL);
gal_a11y_e_cell_construct (ATK_OBJECT (a11y),
item,
cell_view,
parent,
model_col,
view_col,
row);
a11y->model_row_changed_id =
g_signal_connect (item->table_model, "model_row_changed",
G_CALLBACK (ectr_model_row_changed_cb),
subcell_a11y);
if (subcell_a11y && subcell_view)
{
subcell_view->kill_view_cb = kill_view_cb;
if (!g_list_find(subcell_view->kill_view_cb_data, subcell_a11y))
subcell_view->kill_view_cb_data = g_list_append(subcell_view->kill_view_cb_data, subcell_a11y);
}
g_object_weak_ref (G_OBJECT (subcell_a11y), (GWeakNotify) ectr_subcell_weak_ref, a11y);
return subcell_a11y;
}
