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/*
* AT-SPI - Assistive Technology Service Provider Interface
* (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
*
* Copyright 2001, 2002 Sun Microsystems Inc.,
* Copyright 2001, 2002 Ximian, Inc.
* Copyright 2010, 2011 Novell, 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 2.1 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., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "atspi-private.h"
/**
* AtspiValue:
*
* An interface supporting a one-dimensional scalar
* to be modified, or which reflects its value.
*
* An interface supporting a one-dimensional scalar
* to be modified, or which reflects its value. If
* STATE_EDITABLE is not present, the value is
* treated as "read only".
*/
/**
* atspi_value_get_minimum_value:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
*
* Gets the minimum allowed value for an #AtspiValue.
*
* Returns: the minimum allowed value for this object.
*
**/
gdouble
atspi_value_get_minimum_value (AtspiValue *obj, GError **error)
{
double retval;
g_return_val_if_fail (obj != NULL, 0.0);
_atspi_dbus_get_property (obj, atspi_interface_value, "MinimumValue", error, "d", &retval);
return retval;
}
/**
* atspi_value_get_current_value:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
*
* Gets the current value for an #AtspiValue.
*
* Returns: the current value for this object.
**/
gdouble
atspi_value_get_current_value (AtspiValue *obj, GError **error)
{
double retval;
g_return_val_if_fail (obj != NULL, 0.0);
_atspi_dbus_get_property (obj, atspi_interface_value, "CurrentValue", error, "d", &retval);
return retval;
}
/**
* atspi_value_get_maximum_value:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
*
* Gets the maximum allowed value for an #AtspiValue.
*
* Returns: the maximum allowed value for this object.
**/
gdouble
atspi_value_get_maximum_value (AtspiValue *obj, GError **error)
{
double retval;
g_return_val_if_fail (obj != NULL, 0.0);
_atspi_dbus_get_property (obj, atspi_interface_value, "MaximumValue", error, "d", &retval);
return retval;
}
/**
* atspi_value_set_current_value:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
* @new_value: a #gdouble value which is the desired new value of the object.
*
* Sets the current value of an #AtspiValue.
*
* Returns: #TRUE if the value could be assigned the specified value,
* #FALSE otherwise.
**/
gboolean
atspi_value_set_current_value (AtspiValue *obj, gdouble new_value, GError **error)
{
double d_new_value = new_value;
DBusMessage *message, *reply;
DBusMessageIter iter, iter_variant;
static const char *str_curval = "CurrentValue";
AtspiAccessible *accessible = ATSPI_ACCESSIBLE (obj);
g_return_val_if_fail (accessible != NULL, FALSE);
if (!accessible->parent.app || !accessible->parent.app->bus_name)
{
g_set_error_literal (error, ATSPI_ERROR, ATSPI_ERROR_APPLICATION_GONE,
_ ("The application no longer exists"));
return FALSE;
}
message = dbus_message_new_method_call (accessible->parent.app->bus_name,
accessible->parent.path,
DBUS_INTERFACE_PROPERTIES, "Set");
if (!message)
return FALSE;
dbus_message_append_args (message, DBUS_TYPE_STRING, &atspi_interface_value,
DBUS_TYPE_STRING, &str_curval,
DBUS_TYPE_INVALID);
dbus_message_iter_init_append (message, &iter);
dbus_message_iter_open_container (&iter, DBUS_TYPE_VARIANT, "d", &iter_variant);
dbus_message_iter_append_basic (&iter_variant, DBUS_TYPE_DOUBLE, &d_new_value);
dbus_message_iter_close_container (&iter, &iter_variant);
reply = _atspi_dbus_send_with_reply_and_block (message, error);
dbus_message_unref (reply);
return TRUE;
}
/**
* atspi_value_get_minimum_increment:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
*
* Gets the minimum increment by which an #AtspiValue can be adjusted.
*
* Returns: the minimum increment by which the value may be changed, or
* zero if the minimum increment cannot be determined.
*
**/
gdouble
atspi_value_get_minimum_increment (AtspiValue *obj, GError **error)
{
double retval;
g_return_val_if_fail (obj != NULL, 0.0);
_atspi_dbus_get_property (obj, atspi_interface_value, "MinimumIncrement", error, "d", &retval);
return retval;
}
/**
* atspi_value_get_text:
* @obj: a pointer to the #AtspiValue implementor on which to operate.
*
* Gets the human readable text alternative associated with the value.
* @text is a newly created string, that must be freed by the
* caller. Can be NULL if no descriptor is available.
*
* Since: 2.46
**/
gchar *
atspi_value_get_text (AtspiValue *obj, GError **error)
{
gchar *retval = NULL;
g_return_val_if_fail (obj != NULL, NULL);
_atspi_dbus_get_property (obj, atspi_interface_value, "Text", error, "s", &retval);
return retval;
}
static void
atspi_value_base_init (AtspiValue *klass)
{
}
GType
atspi_value_get_type (void)
{
static GType type = 0;
if (!type)
{
static const GTypeInfo tinfo = {
sizeof (AtspiValue),
(GBaseInitFunc) atspi_value_base_init,
(GBaseFinalizeFunc) NULL,
};
type = g_type_register_static (G_TYPE_INTERFACE, "AtspiValue", &tinfo, 0);
}
return type;
}
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