gtk2/gtk/a11y/gtkflowboxaccessible.c

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/*
* Copyright (C) 2013 Red Hat, 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 "gtkflowboxaccessibleprivate.h"
#include "gtk/gtkflowbox.h"
static void atk_selection_interface_init (AtkSelectionIface *iface);
2020-05-10 01:03:35 +00:00
G_DEFINE_TYPE_WITH_CODE (GtkFlowBoxAccessible, gtk_flow_box_accessible, GTK_TYPE_WIDGET_ACCESSIBLE,
G_IMPLEMENT_INTERFACE (ATK_TYPE_SELECTION, atk_selection_interface_init))
static void
gtk_flow_box_accessible_init (GtkFlowBoxAccessible *accessible)
{
}
static void
gtk_flow_box_accessible_initialize (AtkObject *obj,
gpointer data)
{
ATK_OBJECT_CLASS (gtk_flow_box_accessible_parent_class)->initialize (obj, data);
obj->role = ATK_ROLE_TABLE;
}
static AtkStateSet*
gtk_flow_box_accessible_ref_state_set (AtkObject *obj)
{
AtkStateSet *state_set;
GtkWidget *widget;
state_set = ATK_OBJECT_CLASS (gtk_flow_box_accessible_parent_class)->ref_state_set (obj);
widget = gtk_accessible_get_widget (GTK_ACCESSIBLE (obj));
if (widget != NULL)
atk_state_set_add_state (state_set, ATK_STATE_MANAGES_DESCENDANTS);
return state_set;
}
static void
gtk_flow_box_accessible_class_init (GtkFlowBoxAccessibleClass *klass)
{
AtkObjectClass *object_class = ATK_OBJECT_CLASS (klass);
object_class->initialize = gtk_flow_box_accessible_initialize;
object_class->ref_state_set = gtk_flow_box_accessible_ref_state_set;
}
static gboolean
gtk_flow_box_accessible_add_selection (AtkSelection *selection,
gint idx)
{
GtkWidget *box;
GtkWidget *child;
int pos;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return FALSE;
for (child = gtk_widget_get_first_child (box), pos = 0;
child != NULL && pos < idx;
child = gtk_widget_get_next_sibling (child), pos++) ;
if (child && pos == idx)
{
gtk_flow_box_select_child (GTK_FLOW_BOX (box), GTK_FLOW_BOX_CHILD (child));
return TRUE;
}
return FALSE;
}
static gboolean
gtk_flow_box_accessible_remove_selection (AtkSelection *selection,
gint idx)
{
GtkWidget *box;
GtkWidget *child;
int pos;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return FALSE;
for (child = gtk_widget_get_first_child (box), pos = 0;
child != NULL && pos < idx;
child = gtk_widget_get_next_sibling (child), pos++) ;
if (child && pos == idx)
{
gtk_flow_box_unselect_child (GTK_FLOW_BOX (box), GTK_FLOW_BOX_CHILD (child));
return TRUE;
}
return FALSE;
}
static gboolean
gtk_flow_box_accessible_clear_selection (AtkSelection *selection)
{
GtkWidget *box;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return FALSE;
gtk_flow_box_unselect_all (GTK_FLOW_BOX (box));
return TRUE;
}
static gboolean
gtk_flow_box_accessible_select_all (AtkSelection *selection)
{
GtkWidget *box;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return FALSE;
gtk_flow_box_select_all (GTK_FLOW_BOX (box));
return TRUE;
}
typedef struct
{
gint idx;
GtkWidget *child;
} FindSelectedData;
static void
find_selected_child (GtkFlowBox *box,
GtkFlowBoxChild *child,
gpointer data)
{
FindSelectedData *d = data;
if (d->idx == 0)
{
if (d->child == NULL)
d->child = GTK_WIDGET (child);
}
else
d->idx -= 1;
}
static AtkObject *
gtk_flow_box_accessible_ref_selection (AtkSelection *selection,
gint idx)
{
GtkWidget *box;
AtkObject *accessible;
FindSelectedData data;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return NULL;
data.idx = idx;
data.child = NULL;
gtk_flow_box_selected_foreach (GTK_FLOW_BOX (box), find_selected_child, &data);
if (data.child == NULL)
return NULL;
accessible = gtk_widget_get_accessible (data.child);
g_object_ref (accessible);
return accessible;
}
static void
count_selected (GtkFlowBox *box,
GtkFlowBoxChild *child,
gpointer data)
{
gint *count = data;
*count += 1;
}
static gint
gtk_flow_box_accessible_get_selection_count (AtkSelection *selection)
{
GtkWidget *box;
gint count;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return 0;
count = 0;
gtk_flow_box_selected_foreach (GTK_FLOW_BOX (box), count_selected, &count);
return count;
}
static gboolean
gtk_flow_box_accessible_is_child_selected (AtkSelection *selection,
gint idx)
{
GtkWidget *box;
GtkFlowBoxChild *child;
box = gtk_accessible_get_widget (GTK_ACCESSIBLE (selection));
if (box == NULL)
return FALSE;
child = gtk_flow_box_get_child_at_index (GTK_FLOW_BOX (box), idx);
return gtk_flow_box_child_is_selected (child);
}
static void atk_selection_interface_init (AtkSelectionIface *iface)
{
iface->add_selection = gtk_flow_box_accessible_add_selection;
iface->remove_selection = gtk_flow_box_accessible_remove_selection;
iface->clear_selection = gtk_flow_box_accessible_clear_selection;
iface->ref_selection = gtk_flow_box_accessible_ref_selection;
iface->get_selection_count = gtk_flow_box_accessible_get_selection_count;
iface->is_child_selected = gtk_flow_box_accessible_is_child_selected;
iface->select_all_selection = gtk_flow_box_accessible_select_all;
}
void
_gtk_flow_box_accessible_selection_changed (GtkWidget *box)
{
AtkObject *accessible;
accessible = gtk_widget_get_accessible (box);
g_signal_emit_by_name (accessible, "selection-changed");
}
void
_gtk_flow_box_accessible_update_cursor (GtkWidget *box,
GtkWidget *child)
{
AtkObject *accessible;
AtkObject *descendant;
accessible = gtk_widget_get_accessible (box);
descendant = child ? gtk_widget_get_accessible (child) : NULL;
g_signal_emit_by_name (accessible, "active-descendant-changed", descendant);
}