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-rw-r--r--e-util/gal-a11y-e-table.c315
1 files changed, 315 insertions, 0 deletions
diff --git a/e-util/gal-a11y-e-table.c b/e-util/gal-a11y-e-table.c
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+++ b/e-util/gal-a11y-e-table.c
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+/*
+ * 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:
+ * Christopher James Lahey <clahey@ximian.com>
+ *
+ * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "gal-a11y-e-table.h"
+
+#include "e-table-click-to-add.h"
+#include "e-table-group-container.h"
+#include "e-table-group-leaf.h"
+#include "e-table-group.h"
+#include "e-table.h"
+#include "gal-a11y-e-table-factory.h"
+#include "gal-a11y-e-table-item.h"
+#include "gal-a11y-util.h"
+
+#define CS_CLASS(a11y) (G_TYPE_INSTANCE_GET_CLASS ((a11y), C_TYPE_STREAM, GalA11yETableClass))
+static AtkObjectClass *parent_class;
+static GType parent_type;
+static gint priv_offset;
+#define GET_PRIVATE(object) ((GalA11yETablePrivate *) (((gchar *) object) + priv_offset))
+#define PARENT_TYPE (parent_type)
+
+struct _GalA11yETablePrivate {
+ AtkObject *child_item;
+};
+
+/* Static functions */
+static ETableItem *
+find_first_table_item (ETableGroup *group)
+{
+ GnomeCanvasGroup *cgroup;
+ GList *l;
+
+ cgroup = GNOME_CANVAS_GROUP (group);
+
+ for (l = cgroup->item_list; l; l = l->next) {
+ GnomeCanvasItem *i;
+
+ i = GNOME_CANVAS_ITEM (l->data);
+
+ if (E_IS_TABLE_GROUP (i))
+ return find_first_table_item (E_TABLE_GROUP (i));
+ else if (E_IS_TABLE_ITEM (i)) {
+ return E_TABLE_ITEM (i);
+ }
+ }
+
+ return NULL;
+}
+
+static AtkObject *
+eti_get_accessible (ETableItem *eti,
+ AtkObject *parent)
+{
+ AtkObject *a11y = NULL;
+
+ g_return_val_if_fail (eti, NULL);
+
+ a11y = atk_gobject_accessible_for_object (G_OBJECT (eti));
+ g_return_val_if_fail (a11y, NULL);
+
+ return a11y;
+}
+
+static gboolean
+init_child_item (GalA11yETable *a11y)
+{
+ ETable *table;
+
+ if (!a11y || !GTK_IS_ACCESSIBLE (a11y))
+ return FALSE;
+
+ table = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));
+ if (table && gtk_widget_get_mapped (GTK_WIDGET (table)) && table->group && E_IS_TABLE_GROUP_CONTAINER (table->group)) {
+ ETableGroupContainer *etgc = (ETableGroupContainer *) table->group;
+ GList *list;
+
+ for (list = etgc->children; list; list = g_list_next (list)) {
+ ETableGroupContainerChildNode *child_node = list->data;
+ ETableGroup *child = child_node->child;
+ ETableItem *eti = find_first_table_item (child);
+
+ eti_get_accessible (eti, ATK_OBJECT (a11y));
+ }
+ }
+ g_object_unref (a11y);
+ g_object_unref (table);
+
+ return FALSE;
+}
+
+static AtkObject *
+et_ref_accessible_at_point (AtkComponent *component,
+ gint x,
+ gint y,
+ AtkCoordType coord_type)
+{
+ GalA11yETable *a11y = GAL_A11Y_E_TABLE (component);
+ if (GET_PRIVATE (a11y)->child_item)
+ g_object_ref (GET_PRIVATE (a11y)->child_item);
+ return GET_PRIVATE (a11y)->child_item;
+}
+
+static gint
+et_get_n_children (AtkObject *accessible)
+{
+ GalA11yETable *a11y = GAL_A11Y_E_TABLE (accessible);
+ ETable * et;
+ gint n = 0;
+
+ et = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));
+
+ if (et && et->group) {
+ if (E_IS_TABLE_GROUP_LEAF (et->group))
+ n = 1;
+ else if (E_IS_TABLE_GROUP_CONTAINER (et->group)) {
+ ETableGroupContainer *etgc = (ETableGroupContainer *) et->group;
+ n = g_list_length (etgc->children);
+ }
+ }
+
+ if (et && et->use_click_to_add && et->click_to_add) {
+ n++;
+ }
+ return n;
+}
+
+static AtkObject *
+et_ref_child (AtkObject *accessible,
+ gint i)
+{
+ GalA11yETable *a11y = GAL_A11Y_E_TABLE (accessible);
+ ETable * et;
+ gint child_no;
+
+ et = E_TABLE (gtk_accessible_get_widget (GTK_ACCESSIBLE (a11y)));
+ if (!et)
+ return NULL;
+
+ child_no = et_get_n_children (accessible);
+ if (i == 0 || i < child_no - 1) {
+ if (E_IS_TABLE_GROUP_LEAF (et->group)) {
+ ETableItem *eti = find_first_table_item (et->group);
+ AtkObject *aeti = eti_get_accessible (eti, accessible);
+ if (aeti)
+ g_object_ref (aeti);
+ return aeti;
+
+ } else if (E_IS_TABLE_GROUP_CONTAINER (et->group)) {
+ ETableGroupContainer *etgc = (ETableGroupContainer *) et->group;
+ ETableGroupContainerChildNode *child_node = g_list_nth_data (etgc->children, i);
+ if (child_node) {
+ ETableGroup *child = child_node->child;
+ ETableItem * eti = find_first_table_item (child);
+ AtkObject *aeti = eti_get_accessible (eti, accessible);
+ if (aeti)
+ g_object_ref (aeti);
+ return aeti;
+ }
+ }
+ } else if (i == child_no -1) {
+ ETableClickToAdd * etcta;
+
+ if (et && et->use_click_to_add && et->click_to_add) {
+ etcta = E_TABLE_CLICK_TO_ADD (et->click_to_add);
+ accessible = atk_gobject_accessible_for_object (G_OBJECT (etcta));
+ if (accessible)
+ g_object_ref (accessible);
+ return accessible;
+ }
+ }
+
+ return NULL;
+}
+
+static AtkLayer
+et_get_layer (AtkComponent *component)
+{
+ return ATK_LAYER_WIDGET;
+}
+
+static void
+et_class_init (GalA11yETableClass *class)
+{
+ AtkObjectClass *atk_object_class = ATK_OBJECT_CLASS (class);
+
+ parent_class = g_type_class_ref (PARENT_TYPE);
+
+ atk_object_class->get_n_children = et_get_n_children;
+ atk_object_class->ref_child = et_ref_child;
+}
+
+static void
+et_atk_component_iface_init (AtkComponentIface *iface)
+{
+ iface->ref_accessible_at_point = et_ref_accessible_at_point;
+ iface->get_layer = et_get_layer;
+}
+
+static void
+et_init (GalA11yETable *a11y)
+{
+ GalA11yETablePrivate *priv;
+
+ priv = GET_PRIVATE (a11y);
+
+ priv->child_item = NULL;
+}
+
+/**
+ * gal_a11y_e_table_get_type:
+ * @void:
+ *
+ * Registers the &GalA11yETable class if necessary, and returns the type ID
+ * associated to it.
+ *
+ * Return value: The type ID of the &GalA11yETable class.
+ **/
+GType
+gal_a11y_e_table_get_type (void)
+{
+ static GType type = 0;
+
+ if (!type) {
+ AtkObjectFactory *factory;
+
+ GTypeInfo info = {
+ sizeof (GalA11yETableClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) et_class_init,
+ (GClassFinalizeFunc) NULL,
+ NULL, /* class_data */
+ sizeof (GalA11yETable),
+ 0,
+ (GInstanceInitFunc) et_init,
+ NULL /* value_table */
+ };
+
+ static const GInterfaceInfo atk_component_info = {
+ (GInterfaceInitFunc) et_atk_component_iface_init,
+ (GInterfaceFinalizeFunc) NULL,
+ NULL
+ };
+
+ factory = atk_registry_get_factory (atk_get_default_registry (), GTK_TYPE_WIDGET);
+ parent_type = atk_object_factory_get_accessible_type (factory);
+
+ type = gal_a11y_type_register_static_with_private (
+ PARENT_TYPE, "GalA11yETable", &info, 0,
+ sizeof (GalA11yETablePrivate), &priv_offset);
+ g_type_add_interface_static (type, ATK_TYPE_COMPONENT, &atk_component_info);
+ }
+
+ return type;
+}
+
+AtkObject *
+gal_a11y_e_table_new (GObject *widget)
+{
+ GalA11yETable *a11y;
+ ETable *table;
+
+ table = E_TABLE (widget);
+
+ a11y = g_object_new (gal_a11y_e_table_get_type (), NULL);
+
+ gtk_accessible_set_widget (GTK_ACCESSIBLE (a11y), GTK_WIDGET (widget));
+
+ /* we need to init all the children for multiple table items */
+ if (table && gtk_widget_get_mapped (GTK_WIDGET (table)) && table->group && E_IS_TABLE_GROUP_CONTAINER (table->group)) {
+ /* Ref it here so that it is still valid in the idle function */
+ /* It will be unrefed in the idle function */
+ g_object_ref (a11y);
+ g_object_ref (widget);
+
+ g_idle_add ((GSourceFunc) init_child_item, a11y);
+ }
+
+ return ATK_OBJECT (a11y);
+}
+
+void
+gal_a11y_e_table_init (void)
+{
+ if (atk_get_root ())
+ atk_registry_set_factory_type (
+ atk_get_default_registry (),
+ E_TYPE_TABLE,
+ gal_a11y_e_table_factory_get_type ());
+
+}
+
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