gtk2/gtk/a11y/gtknotebookpageaccessible.c
Matthias Clasen 2a24b8c653 Replace most remaining uses of container api
These are all on GtkBox or enumerating children.
2020-05-11 22:38:21 -04:00

335 lines
9.7 KiB
C

/* GTK+ - accessibility implementations
* Copyright 2001, 2002, 2003 Sun Microsystems Inc.
*
* This library 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) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include "gtknotebookpageaccessible.h"
struct _GtkNotebookPageAccessiblePrivate
{
GtkAccessible *notebook;
GtkWidget *child;
};
static void atk_component_interface_init (AtkComponentIface *iface);
G_DEFINE_TYPE_WITH_CODE (GtkNotebookPageAccessible, gtk_notebook_page_accessible, ATK_TYPE_OBJECT,
G_ADD_PRIVATE (GtkNotebookPageAccessible)
G_IMPLEMENT_INTERFACE (ATK_TYPE_COMPONENT, atk_component_interface_init))
static GtkWidget *
find_label_child (GtkWidget *widget)
{
GtkWidget *child;
for (child = gtk_widget_get_first_child (widget);
child != NULL;
child = gtk_widget_get_next_sibling (child))
{
if (GTK_IS_LABEL (child))
return child;
else
{
GtkWidget *w = find_label_child (child);
if (w)
return w;
}
}
return NULL;
}
static GtkWidget *
get_label_from_notebook_page (GtkNotebookPageAccessible *page)
{
GtkWidget *child;
GtkNotebook *notebook;
notebook = GTK_NOTEBOOK (gtk_accessible_get_widget (page->priv->notebook));
if (!notebook)
return NULL;
if (!gtk_notebook_get_show_tabs (notebook))
return NULL;
child = gtk_notebook_get_tab_label (notebook, page->priv->child);
if (GTK_IS_LABEL (child))
return child;
return find_label_child (child);
}
static const gchar *
gtk_notebook_page_accessible_get_name (AtkObject *accessible)
{
GtkWidget *label;
if (accessible->name != NULL)
return accessible->name;
label = get_label_from_notebook_page (GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible));
if (GTK_IS_LABEL (label))
return gtk_label_get_text (GTK_LABEL (label));
return NULL;
}
static AtkObject *
gtk_notebook_page_accessible_get_parent (AtkObject *accessible)
{
GtkNotebookPageAccessible *page;
page = GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible);
return ATK_OBJECT (page->priv->notebook);
}
static gint
gtk_notebook_page_accessible_get_n_children (AtkObject *accessible)
{
return 1;
}
static AtkObject *
gtk_notebook_page_accessible_ref_child (AtkObject *accessible,
gint i)
{
AtkObject *child_obj;
GtkNotebookPageAccessible *page = NULL;
if (i != 0)
return NULL;
page = GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible);
if (!page->priv->child)
return NULL;
child_obj = gtk_widget_get_accessible (page->priv->child);
g_object_ref (child_obj);
return child_obj;
}
static AtkStateSet *
gtk_notebook_page_accessible_ref_state_set (AtkObject *accessible)
{
GtkNotebookPageAccessible *page = GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible);
AtkStateSet *state_set, *label_state_set, *merged_state_set;
AtkObject *atk_label;
GtkWidget *label;
AtkObject *selected;
state_set = ATK_OBJECT_CLASS (gtk_notebook_page_accessible_parent_class)->ref_state_set (accessible);
atk_state_set_add_state (state_set, ATK_STATE_SELECTABLE);
selected = atk_selection_ref_selection (ATK_SELECTION (page->priv->notebook), 0);
if (selected)
{
if (selected == accessible)
atk_state_set_add_state (state_set, ATK_STATE_SELECTED);
g_object_unref (selected);
}
label = get_label_from_notebook_page (GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible));
if (label)
{
atk_label = gtk_widget_get_accessible (label);
label_state_set = atk_object_ref_state_set (atk_label);
merged_state_set = atk_state_set_or_sets (state_set, label_state_set);
g_object_unref (label_state_set);
g_object_unref (state_set);
}
else
{
AtkObject *child;
child = atk_object_ref_accessible_child (accessible, 0);
if (!child)
return state_set;
merged_state_set = state_set;
state_set = atk_object_ref_state_set (child);
if (atk_state_set_contains_state (state_set, ATK_STATE_VISIBLE))
{
atk_state_set_add_state (merged_state_set, ATK_STATE_VISIBLE);
if (atk_state_set_contains_state (state_set, ATK_STATE_ENABLED))
atk_state_set_add_state (merged_state_set, ATK_STATE_ENABLED);
if (atk_state_set_contains_state (state_set, ATK_STATE_SHOWING))
atk_state_set_add_state (merged_state_set, ATK_STATE_SHOWING);
}
g_object_unref (state_set);
g_object_unref (child);
}
return merged_state_set;
}
static gint
gtk_notebook_page_accessible_get_index_in_parent (AtkObject *accessible)
{
GtkNotebookPageAccessible *page;
page = GTK_NOTEBOOK_PAGE_ACCESSIBLE (accessible);
if (!page->priv->child)
return -1;
return gtk_notebook_page_num (GTK_NOTEBOOK (gtk_accessible_get_widget (page->priv->notebook)),
page->priv->child);
}
static void
gtk_notebook_page_accessible_class_init (GtkNotebookPageAccessibleClass *klass)
{
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
class->get_name = gtk_notebook_page_accessible_get_name;
class->get_parent = gtk_notebook_page_accessible_get_parent;
class->get_n_children = gtk_notebook_page_accessible_get_n_children;
class->ref_child = gtk_notebook_page_accessible_ref_child;
class->ref_state_set = gtk_notebook_page_accessible_ref_state_set;
class->get_index_in_parent = gtk_notebook_page_accessible_get_index_in_parent;
}
static void
gtk_notebook_page_accessible_init (GtkNotebookPageAccessible *page)
{
page->priv = gtk_notebook_page_accessible_get_instance_private (page);
}
static void
notify_tab_label (GObject *object,
GParamSpec *pspec,
AtkObject *atk_obj)
{
if (atk_obj->name == NULL)
g_object_notify (G_OBJECT (atk_obj), "accessible-name");
g_signal_emit_by_name (atk_obj, "visible-data-changed");
}
AtkObject *
gtk_notebook_page_accessible_new (GtkNotebookAccessible *notebook,
GtkWidget *child)
{
GObject *object;
AtkObject *atk_object;
GtkNotebookPageAccessible *page;
GtkNotebook *nb;
g_return_val_if_fail (GTK_IS_NOTEBOOK_ACCESSIBLE (notebook), NULL);
g_return_val_if_fail (GTK_WIDGET (child), NULL);
object = g_object_new (GTK_TYPE_NOTEBOOK_PAGE_ACCESSIBLE, NULL);
page = GTK_NOTEBOOK_PAGE_ACCESSIBLE (object);
page->priv->notebook = GTK_ACCESSIBLE (notebook);
page->priv->child = child;
atk_object = ATK_OBJECT (page);
atk_object->role = ATK_ROLE_PAGE_TAB;
atk_object->layer = ATK_LAYER_WIDGET;
atk_object_set_parent (gtk_widget_get_accessible (child), atk_object);
nb = GTK_NOTEBOOK (gtk_accessible_get_widget (page->priv->notebook));
g_signal_connect (gtk_notebook_get_page (nb, child),
"notify::tab-label",
G_CALLBACK (notify_tab_label), page);
return atk_object;
}
void
gtk_notebook_page_accessible_invalidate (GtkNotebookPageAccessible *page)
{
AtkObject *obj = ATK_OBJECT (page);
GtkWidget *notebook;
notebook = gtk_accessible_get_widget (page->priv->notebook);
if (notebook)
g_signal_handlers_disconnect_by_func (notebook, notify_tab_label, page);
atk_object_notify_state_change (obj, ATK_STATE_DEFUNCT, TRUE);
atk_object_set_parent (obj, NULL);
page->priv->notebook = NULL;
atk_object_set_parent (gtk_widget_get_accessible (page->priv->child), NULL);
page->priv->child = NULL;
}
static AtkObject*
gtk_notebook_page_accessible_ref_accessible_at_point (AtkComponent *component,
gint x,
gint y,
AtkCoordType coord_type)
{
/* There is only one child so we return it */
AtkObject* child;
child = atk_object_ref_accessible_child (ATK_OBJECT (component), 0);
return child;
}
static void
gtk_notebook_page_accessible_get_extents (AtkComponent *component,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coord_type)
{
GtkWidget *label;
AtkObject *atk_label;
label = get_label_from_notebook_page (GTK_NOTEBOOK_PAGE_ACCESSIBLE (component));
if (!label)
{
AtkObject *child;
*width = 0;
*height = 0;
child = atk_object_ref_accessible_child (ATK_OBJECT (component), 0);
if (!child)
return;
atk_component_get_extents (ATK_COMPONENT (child), x, y, NULL, NULL,
coord_type);
g_object_unref (child);
}
else
{
atk_label = gtk_widget_get_accessible (label);
atk_component_get_extents (ATK_COMPONENT (atk_label),
x, y, width, height, coord_type);
}
}
static void
atk_component_interface_init (AtkComponentIface *iface)
{
/* We use the default implementations for contains, get_position, get_size */
iface->ref_accessible_at_point = gtk_notebook_page_accessible_ref_accessible_at_point;
iface->get_extents = gtk_notebook_page_accessible_get_extents;
}