/* GAIL - The GNOME Accessibility Implementation Library
* Copyright 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, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <string.h>
#include <gtk/gtk.h>
#include <gdk/gdkkeysyms.h>
#include "gailexpander.h"
#include <libgail-util/gailmisc.h>
static void gail_expander_class_init (GailExpanderClass *klass);
static void gail_expander_init (GailExpander *expander);
static const gchar* gail_expander_get_name (AtkObject *obj);
static gint gail_expander_get_n_children (AtkObject *obj)
;
static AtkObject* gail_expander_ref_child (AtkObject *obj,
gint i);
static AtkStateSet* gail_expander_ref_state_set (AtkObject *obj);
static void gail_expander_real_notify_gtk (GObject *obj,
GParamSpec *pspec);
static void gail_expander_map_gtk (GtkWidget *widget,
gpointer data);
static void gail_expander_real_initialize (AtkObject *obj,
gpointer data);
static void gail_expander_finalize (GObject *object);
static void gail_expander_init_textutil (GailExpander *expander,
GtkExpander *widget);
static const gchar* gail_expander_get_full_text (GtkExpander *widget);
static void atk_action_interface_init (AtkActionIface *iface);
static gboolean gail_expander_do_action (AtkAction *action,
gint i);
static gboolean idle_do_action (gpointer data);
static gint gail_expander_get_n_actions(AtkAction *action);
static const gchar* gail_expander_get_description
(AtkAction *action,
gint i);
static const gchar* gail_expander_get_keybinding
(AtkAction *action,
gint i);
static const gchar* gail_expander_action_get_name
(AtkAction *action,
gint i);
static gboolean gail_expander_set_description
(AtkAction *action,
gint i,
const gchar *desc);
/* atktext.h */
static void atk_text_interface_init (AtkTextIface *iface);
static gchar* gail_expander_get_text (AtkText *text,
gint start_pos,
gint end_pos);
static gunichar gail_expander_get_character_at_offset
(AtkText *text,
gint offset);
static gchar* gail_expander_get_text_before_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_expander_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gchar* gail_expander_get_text_after_offset
(AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset);
static gint gail_expander_get_character_count(AtkText *text);
static void gail_expander_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords);
static gint gail_expander_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords);
static AtkAttributeSet* gail_expander_get_run_attributes
(AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset);
static AtkAttributeSet* gail_expander_get_default_attributes
(AtkText *text);
G_DEFINE_TYPE_WITH_CODE (GailExpander, gail_expander, GAIL_TYPE_CONTAINER,
G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, atk_action_interface_init)
G_IMPLEMENT_INTERFACE (ATK_TYPE_TEXT, atk_text_interface_init))
static void
gail_expander_class_init (GailExpanderClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
AtkObjectClass *class = ATK_OBJECT_CLASS (klass);
GailWidgetClass *widget_class;
widget_class = (GailWidgetClass*)klass;
widget_class->notify_gtk = gail_expander_real_notify_gtk;
gobject_class->finalize = gail_expander_finalize;
class->get_name = gail_expander_get_name;
class->get_n_children = gail_expander_get_n_children;
class->ref_child = gail_expander_ref_child;
class->ref_state_set = gail_expander_ref_state_set;
class->initialize = gail_expander_real_initialize;
}
static void
gail_expander_init (GailExpander *expander)
{
expander->activate_description = NULL;
expander->activate_keybinding = NULL;
expander->action_idle_handler = 0;
expander->textutil = NULL;
}
static const gchar*
gail_expander_get_name (AtkObject *obj)
{
const gchar *name;
g_return_val_if_fail (GAIL_IS_EXPANDER (obj), NULL);
name = ATK_OBJECT_CLASS (gail_expander_parent_class)->get_name (obj);
if (name != NULL)
return name;
else
{
/*
* Get the text on the label
*/
GtkWidget *widget;
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
g_return_val_if_fail (GTK_IS_EXPANDER (widget), NULL);
return gail_expander_get_full_text (GTK_EXPANDER (widget));
}
}
static gint
gail_expander_get_n_children (AtkObject* obj)
{
GtkWidget *widget;
GList *children;
gint count = 0;
g_return_val_if_fail (GAIL_IS_CONTAINER (obj), count);
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
return 0;
children = gtk_container_get_children (GTK_CONTAINER(widget));
count = g_list_length (children);
g_list_free (children);
/* See if there is a label - if there is, reduce our count by 1
* since we don't want the label included with the children.
*/
if (gtk_expander_get_label_widget (GTK_EXPANDER (widget)))
count -= 1;
return count;
}
static AtkObject*
gail_expander_ref_child (AtkObject *obj,
gint i)
{
GList *children, *tmp_list;
AtkObject *accessible;
GtkWidget *widget;
GtkWidget *label;
gint index;
gint count;
g_return_val_if_fail (GAIL_IS_CONTAINER (obj), NULL);
g_return_val_if_fail ((i >= 0), NULL);
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
return NULL;
children = gtk_container_get_children (GTK_CONTAINER (widget));
/* See if there is a label - if there is, we need to skip it
* since we don't want the label included with the children.
*/
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (label) {
count = g_list_length (children);
for (index = 0; index <= i; index++) {
tmp_list = g_list_nth (children, index);
if (label == GTK_WIDGET (tmp_list->data)) {
i += 1;
break;
}
}
}
tmp_list = g_list_nth (children, i);
if (!tmp_list)
{
g_list_free (children);
return NULL;
}
accessible = gtk_widget_get_accessible (GTK_WIDGET (tmp_list->data));
g_list_free (children);
g_object_ref (accessible);
return accessible;
}
static void
gail_expander_real_initialize (AtkObject *obj,
gpointer data)
{
GailExpander *gail_expander = GAIL_EXPANDER (obj);
GtkWidget *expander;
ATK_OBJECT_CLASS (gail_expander_parent_class)->initialize (obj, data);
expander = GTK_WIDGET (data);
if (gtk_widget_get_mapped (expander))
gail_expander_init_textutil (gail_expander, GTK_EXPANDER (expander));
else
g_signal_connect (expander,
"map",
G_CALLBACK (gail_expander_map_gtk),
gail_expander);
obj->role = ATK_ROLE_TOGGLE_BUTTON;
}
static void
gail_expander_map_gtk (GtkWidget *widget,
gpointer data)
{
GailExpander *expander;
expander = GAIL_EXPANDER (data);
gail_expander_init_textutil (expander, GTK_EXPANDER (widget));
}
static void
gail_expander_real_notify_gtk (GObject *obj,
GParamSpec *pspec)
{
AtkObject* atk_obj;
GtkExpander *expander;
GailExpander *gail_expander;
expander = GTK_EXPANDER (obj);
atk_obj = gtk_widget_get_accessible (GTK_WIDGET (expander));
;
if (strcmp (pspec->name, "label") == 0)
{
const gchar* label_text;
label_text = gail_expander_get_full_text (expander);
gail_expander = GAIL_EXPANDER (atk_obj);
if (gail_expander->textutil)
gail_text_util_text_setup (gail_expander->textutil, label_text);
if (atk_obj->name == NULL)
{
/*
* The label has changed so notify a change in accessible-name
*/
g_object_notify (G_OBJECT (atk_obj), "accessible-name");
}
/*
* The label is the only property which can be changed
*/
g_signal_emit_by_name (atk_obj, "visible_data_changed");
}
else if (strcmp (pspec->name, "expanded") == 0)
{
atk_object_notify_state_change (atk_obj, ATK_STATE_CHECKED,
gtk_expander_get_expanded (expander));
atk_object_notify_state_change (atk_obj, ATK_STATE_EXPANDED,
gtk_expander_get_expanded (expander));
g_signal_emit_by_name (atk_obj, "visible_data_changed");
}
else
GAIL_WIDGET_CLASS (gail_expander_parent_class)->notify_gtk (obj, pspec);
}
static const gchar*
gail_expander_get_full_text (GtkExpander *widget)
{
GtkWidget *label_widget;
label_widget = gtk_expander_get_label_widget (widget);
if (!GTK_IS_LABEL (label_widget))
return NULL;
return gtk_label_get_text (GTK_LABEL (label_widget));
}
static void
gail_expander_init_textutil (GailExpander *expander,
GtkExpander *widget)
{
const gchar *label_text;
expander->textutil = gail_text_util_new ();
label_text = gail_expander_get_full_text (widget);
gail_text_util_text_setup (expander->textutil, label_text);
}
static void
atk_action_interface_init (AtkActionIface *iface)
{
iface->do_action = gail_expander_do_action;
iface->get_n_actions = gail_expander_get_n_actions;
iface->get_description = gail_expander_get_description;
iface->get_keybinding = gail_expander_get_keybinding;
iface->get_name = gail_expander_action_get_name;
iface->set_description = gail_expander_set_description;
}
static gboolean
gail_expander_do_action (AtkAction *action,
gint i)
{
GtkWidget *widget;
GailExpander *expander;
gboolean return_value = TRUE;
widget = GTK_ACCESSIBLE (action)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return FALSE;
if (!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
expander = GAIL_EXPANDER (action);
switch (i)
{
case 0:
if (expander->action_idle_handler)
return_value = FALSE;
else
expander->action_idle_handler = gdk_threads_add_idle (idle_do_action, expander);
break;
default:
return_value = FALSE;
break;
}
return return_value;
}
static gboolean
idle_do_action (gpointer data)
{
GtkWidget *widget;
GailExpander *gail_expander;
gail_expander = GAIL_EXPANDER (data);
gail_expander->action_idle_handler = 0;
widget = GTK_ACCESSIBLE (gail_expander)->widget;
if (widget == NULL /* State is defunct */ ||
!gtk_widget_is_sensitive (widget) || !gtk_widget_get_visible (widget))
return FALSE;
gtk_widget_activate (widget);
return FALSE;
}
static gint
gail_expander_get_n_actions (AtkAction *action)
{
return 1;
}
static const gchar*
gail_expander_get_description (AtkAction *action,
gint i)
{
GailExpander *expander;
const gchar *return_value;
expander = GAIL_EXPANDER (action);
switch (i)
{
case 0:
return_value = expander->activate_description;
break;
default:
return_value = NULL;
break;
}
return return_value;
}
static const gchar*
gail_expander_get_keybinding (AtkAction *action,
gint i)
{
GailExpander *expander;
gchar *return_value = NULL;
switch (i)
{
case 0:
{
/*
* We look for a mnemonic on the label
*/
GtkWidget *widget;
GtkWidget *label;
expander = GAIL_EXPANDER (action);
widget = GTK_ACCESSIBLE (expander)->widget;
if (widget == NULL)
/*
* State is defunct
*/
return NULL;
g_return_val_if_fail (GTK_IS_EXPANDER (widget), NULL);
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (GTK_IS_LABEL (label))
{
guint key_val;
key_val = gtk_label_get_mnemonic_keyval (GTK_LABEL (label));
if (key_val != GDK_VoidSymbol)
return_value = gtk_accelerator_name (key_val, GDK_MOD1_MASK);
g_free (expander->activate_keybinding);
expander->activate_keybinding = return_value;
}
break;
}
default:
break;
}
return return_value;
}
static const gchar*
gail_expander_action_get_name (AtkAction *action,
gint i)
{
const gchar *return_value;
switch (i)
{
case 0:
return_value = "activate";
break;
default:
return_value = NULL;
break;
}
return return_value;
}
static gboolean
gail_expander_set_description (AtkAction *action,
gint i,
const gchar *desc)
{
GailExpander *expander;
gchar **value;
expander = GAIL_EXPANDER (action);
switch (i)
{
case 0:
value = &expander->activate_description;
break;
default:
value = NULL;
break;
}
if (value)
{
g_free (*value);
*value = g_strdup (desc);
return TRUE;
}
else
return FALSE;
}
static AtkStateSet*
gail_expander_ref_state_set (AtkObject *obj)
{
AtkStateSet *state_set;
GtkWidget *widget;
GtkExpander *expander;
state_set = ATK_OBJECT_CLASS (gail_expander_parent_class)->ref_state_set (obj);
widget = GTK_ACCESSIBLE (obj)->widget;
if (widget == NULL)
return state_set;
expander = GTK_EXPANDER (widget);
atk_state_set_add_state (state_set, ATK_STATE_EXPANDABLE);
if (gtk_expander_get_expanded (expander)) {
atk_state_set_add_state (state_set, ATK_STATE_CHECKED);
atk_state_set_add_state (state_set, ATK_STATE_EXPANDED);
}
return state_set;
}
/* atktext.h */
static void
atk_text_interface_init (AtkTextIface *iface)
{
iface->get_text = gail_expander_get_text;
iface->get_character_at_offset = gail_expander_get_character_at_offset;
iface->get_text_before_offset = gail_expander_get_text_before_offset;
iface->get_text_at_offset = gail_expander_get_text_at_offset;
iface->get_text_after_offset = gail_expander_get_text_after_offset;
iface->get_character_count = gail_expander_get_character_count;
iface->get_character_extents = gail_expander_get_character_extents;
iface->get_offset_at_point = gail_expander_get_offset_at_point;
iface->get_run_attributes = gail_expander_get_run_attributes;
iface->get_default_attributes = gail_expander_get_default_attributes;
}
static gchar*
gail_expander_get_text (AtkText *text,
gint start_pos,
gint end_pos)
{
GtkWidget *widget;
GailExpander *expander;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
expander = GAIL_EXPANDER (text);
if (!expander->textutil)
gail_expander_init_textutil (expander, GTK_EXPANDER (widget));
label_text = gail_expander_get_full_text (GTK_EXPANDER (widget));
if (label_text == NULL)
return NULL;
else
return gail_text_util_get_substring (expander->textutil,
start_pos, end_pos);
}
static gchar*
gail_expander_get_text_before_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GailExpander *expander;
GtkWidget *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
expander = GAIL_EXPANDER (text);
if (!expander->textutil)
gail_expander_init_textutil (expander, GTK_EXPANDER (widget));
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return NULL;
return gail_text_util_get_text (expander->textutil,
gtk_label_get_layout (GTK_LABEL (label)),
GAIL_BEFORE_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_expander_get_text_at_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GailExpander *expander;
GtkWidget *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
expander = GAIL_EXPANDER (text);
if (!expander->textutil)
gail_expander_init_textutil (expander, GTK_EXPANDER (widget));
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return NULL;
return gail_text_util_get_text (expander->textutil,
gtk_label_get_layout (GTK_LABEL (label)),
GAIL_AT_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gchar*
gail_expander_get_text_after_offset (AtkText *text,
gint offset,
AtkTextBoundary boundary_type,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GailExpander *expander;
GtkWidget *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
expander = GAIL_EXPANDER (text);
if (!expander->textutil)
gail_expander_init_textutil (expander, GTK_EXPANDER (widget));
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return NULL;
return gail_text_util_get_text (expander->textutil,
gtk_label_get_layout (GTK_LABEL (label)),
GAIL_AFTER_OFFSET,
boundary_type, offset, start_offset, end_offset);
}
static gint
gail_expander_get_character_count (AtkText *text)
{
GtkWidget *widget;
GtkWidget *label;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return 0;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return 0;
return g_utf8_strlen (gtk_label_get_text (GTK_LABEL (label)), -1);
}
static void
gail_expander_get_character_extents (AtkText *text,
gint offset,
gint *x,
gint *y,
gint *width,
gint *height,
AtkCoordType coords)
{
GtkWidget *widget;
GtkWidget *label;
PangoRectangle char_rect;
gint index, x_layout, y_layout;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return;
gtk_label_get_layout_offsets (GTK_LABEL (label), &x_layout, &y_layout);
label_text = gtk_label_get_text (GTK_LABEL (label));
index = g_utf8_offset_to_pointer (label_text, offset) - label_text;
pango_layout_index_to_pos (gtk_label_get_layout (GTK_LABEL (label)), index, &char_rect);
gail_misc_get_extents_from_pango_rectangle (label, &char_rect,
x_layout, y_layout, x, y, width, height, coords);
}
static gint
gail_expander_get_offset_at_point (AtkText *text,
gint x,
gint y,
AtkCoordType coords)
{
GtkWidget *widget;
GtkWidget *label;
gint index, x_layout, y_layout;
const gchar *label_text;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return -1;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return -1;
gtk_label_get_layout_offsets (GTK_LABEL (label), &x_layout, &y_layout);
index = gail_misc_get_index_at_point_in_layout (label,
gtk_label_get_layout (GTK_LABEL (label)),
x_layout, y_layout, x, y, coords);
label_text = gtk_label_get_text (GTK_LABEL (label));
if (index == -1)
{
if (coords == ATK_XY_WINDOW || coords == ATK_XY_SCREEN)
return g_utf8_strlen (label_text, -1);
return index;
}
else
return g_utf8_pointer_to_offset (label_text, label_text + index);
}
static AtkAttributeSet*
gail_expander_get_run_attributes (AtkText *text,
gint offset,
gint *start_offset,
gint *end_offset)
{
GtkWidget *widget;
GtkWidget *label;
AtkAttributeSet *at_set = NULL;
GtkJustification justify;
GtkTextDirection dir;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return NULL;
/* Get values set for entire label, if any */
justify = gtk_label_get_justify (GTK_LABEL (label));
if (justify != GTK_JUSTIFY_CENTER)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_JUSTIFICATION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_JUSTIFICATION, justify)));
}
dir = gtk_widget_get_direction (label);
if (dir == GTK_TEXT_DIR_RTL)
{
at_set = gail_misc_add_attribute (at_set,
ATK_TEXT_ATTR_DIRECTION,
g_strdup (atk_text_attribute_get_value (ATK_TEXT_ATTR_DIRECTION, dir)));
}
at_set = gail_misc_layout_get_run_attributes (at_set,
gtk_label_get_layout (GTK_LABEL (label)),
(gchar *) gtk_label_get_text (GTK_LABEL (label)),
offset,
start_offset,
end_offset);
return at_set;
}
static AtkAttributeSet*
gail_expander_get_default_attributes (AtkText *text)
{
GtkWidget *widget;
GtkWidget *label;
AtkAttributeSet *at_set = NULL;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return NULL;
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return NULL;
at_set = gail_misc_get_default_attributes (at_set,
gtk_label_get_layout (GTK_LABEL (label)),
widget);
return at_set;
}
static gunichar
gail_expander_get_character_at_offset (AtkText *text,
gint offset)
{
GtkWidget *widget;
GtkWidget *label;
const gchar *string;
gchar *index;
widget = GTK_ACCESSIBLE (text)->widget;
if (widget == NULL)
/* State is defunct */
return '\0';
label = gtk_expander_get_label_widget (GTK_EXPANDER (widget));
if (!GTK_IS_LABEL(label))
return '\0';
string = gtk_label_get_text (GTK_LABEL (label));
if (offset >= g_utf8_strlen (string, -1))
return '\0';
index = g_utf8_offset_to_pointer (string, offset);
return g_utf8_get_char (index);
}
static void
gail_expander_finalize (GObject *object)
{
GailExpander *expander = GAIL_EXPANDER (object);
g_free (expander->activate_description);
g_free (expander->activate_keybinding);
if (expander->action_idle_handler)
{
g_source_remove (expander->action_idle_handler);
expander->action_idle_handler = 0;
}
if (expander->textutil)
g_object_unref (expander->textutil);
G_OBJECT_CLASS (gail_expander_parent_class)->finalize (object);
}