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/*
* GTK - The GIMP Toolkit
* Copyright (C) 1998, 1999 Red Hat, Inc.
* All rights reserved.
*
* This Library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with the Gnome Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Author: James Henstridge <james@daa.com.au>
*
* Modified by the GTK+ Team and others 2003. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#include "config.h"
#include "gtkradioaction.h"
#include "gtkradiomenuitem.h"
#include "gtktoggleactionprivate.h"
#include "gtktoggletoolbutton.h"
#include "gtkintl.h"
#include "gtkprivate.h"
#include "gtkalias.h"
#define GTK_RADIO_ACTION_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_RADIO_ACTION, GtkRadioActionPrivate))
struct _GtkRadioActionPrivate
{
GSList *group;
gint value;
};
enum
{
CHANGED,
LAST_SIGNAL
};
enum
{
PROP_0,
PROP_VALUE,
PROP_GROUP,
PROP_CURRENT_VALUE
};
static void gtk_radio_action_finalize (GObject *object);
static void gtk_radio_action_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_radio_action_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_radio_action_activate (GtkAction *action);
static GtkWidget *create_menu_item (GtkAction *action);
G_DEFINE_TYPE (GtkRadioAction, gtk_radio_action, GTK_TYPE_TOGGLE_ACTION)
static guint radio_action_signals[LAST_SIGNAL] = { 0 };
static void
gtk_radio_action_class_init (GtkRadioActionClass *klass)
{
GObjectClass *gobject_class;
GtkActionClass *action_class;
gobject_class = G_OBJECT_CLASS (klass);
action_class = GTK_ACTION_CLASS (klass);
gobject_class->finalize = gtk_radio_action_finalize;
gobject_class->set_property = gtk_radio_action_set_property;
gobject_class->get_property = gtk_radio_action_get_property;
action_class->activate = gtk_radio_action_activate;
action_class->create_menu_item = create_menu_item;
/**
* GtkRadioAction:value:
*
* The value is an arbitrary integer which can be used as a
* convenient way to determine which action in the group is
* currently active in an ::activate or ::changed signal handler.
* See gtk_radio_action_get_current_value() and #GtkRadioActionEntry
* for convenient ways to get and set this property.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_VALUE,
g_param_spec_int ("value",
P_("The value"),
P_("The value returned by gtk_radio_action_get_current_value() when this action is the current action of its group."),
G_MININT,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
/**
* GtkRadioAction:group:
*
* Sets a new group for a radio action.
*
* Since: 2.4
*/
g_object_class_install_property (gobject_class,
PROP_GROUP,
g_param_spec_object ("group",
P_("Group"),
P_("The radio action whose group this action belongs to."),
GTK_TYPE_RADIO_ACTION,
GTK_PARAM_WRITABLE));
/**
* GtkRadioAction:current-value:
*
* The value property of the currently active member of the group to which
* this action belongs.
*
* Since: 2.10
*/
g_object_class_install_property (gobject_class,
PROP_CURRENT_VALUE,
g_param_spec_int ("current-value",
P_("The current value"),
P_("The value property of the currently active member of the group to which this action belongs."),
G_MININT,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
/**
* GtkRadioAction::changed:
* @action: the action on which the signal is emitted
* @current: the member of @action<!-- -->s group which has just been activated
*
* The ::changed signal is emitted on every member of a radio group when the
* active member is changed. The signal gets emitted after the ::activate signals
* for the previous and current active members.
*
* Since: 2.4
*/
radio_action_signals[CHANGED] =
g_signal_new (I_("changed"),
G_OBJECT_CLASS_TYPE (klass),
G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE,
G_STRUCT_OFFSET (GtkRadioActionClass, changed), NULL, NULL,
g_cclosure_marshal_VOID__OBJECT,
G_TYPE_NONE, 1, GTK_TYPE_RADIO_ACTION);
g_type_class_add_private (gobject_class, sizeof (GtkRadioActionPrivate));
}
static void
gtk_radio_action_init (GtkRadioAction *action)
{
action->private_data = GTK_RADIO_ACTION_GET_PRIVATE (action);
action->private_data->group = g_slist_prepend (NULL, action);
action->private_data->value = 0;
gtk_toggle_action_set_draw_as_radio (GTK_TOGGLE_ACTION (action), TRUE);
}
/**
* gtk_radio_action_new:
* @name: A unique name for the action
* @label: The label displayed in menu items and on buttons, or %NULL
* @tooltip: A tooltip for this action, or %NULL
* @stock_id: The stock icon to display in widgets representing this
* action, or %NULL
* @value: The value which gtk_radio_action_get_current_value() should
* return if this action is selected.
*
* Creates a new #GtkRadioAction object. To add the action to
* a #GtkActionGroup and set the accelerator for the action,
* call gtk_action_group_add_action_with_accel().
*
* Return value: a new #GtkRadioAction
*
* Since: 2.4
*/
GtkRadioAction *
gtk_radio_action_new (const gchar *name,
const gchar *label,
const gchar *tooltip,
const gchar *stock_id,
gint value)
{
g_return_val_if_fail (name != NULL, NULL);
return g_object_new (GTK_TYPE_RADIO_ACTION,
"name", name,
"label", label,
"tooltip", tooltip,
"stock-id", stock_id,
"value", value,
NULL);
}
static void
gtk_radio_action_finalize (GObject *object)
{
GtkRadioAction *action;
GSList *tmp_list;
action = GTK_RADIO_ACTION (object);
action->private_data->group = g_slist_remove (action->private_data->group, action);
tmp_list = action->private_data->group;
while (tmp_list)
{
GtkRadioAction *tmp_action = tmp_list->data;
tmp_list = tmp_list->next;
tmp_action->private_data->group = action->private_data->group;
}
G_OBJECT_CLASS (gtk_radio_action_parent_class)->finalize (object);
}
static void
gtk_radio_action_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkRadioAction *radio_action;
radio_action = GTK_RADIO_ACTION (object);
switch (prop_id)
{
case PROP_VALUE:
radio_action->private_data->value = g_value_get_int (value);
break;
case PROP_GROUP:
{
GtkRadioAction *arg;
GSList *slist = NULL;
if (G_VALUE_HOLDS_OBJECT (value))
{
arg = GTK_RADIO_ACTION (g_value_get_object (value));
if (arg)
slist = gtk_radio_action_get_group (arg);
gtk_radio_action_set_group (radio_action, slist);
}
}
break;
case PROP_CURRENT_VALUE:
gtk_radio_action_set_current_value (radio_action,
g_value_get_int (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_radio_action_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkRadioAction *radio_action;
radio_action = GTK_RADIO_ACTION (object);
switch (prop_id)
{
case PROP_VALUE:
g_value_set_int (value, radio_action->private_data->value);
break;
case PROP_CURRENT_VALUE:
g_value_set_int (value,
gtk_radio_action_get_current_value (radio_action));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_radio_action_activate (GtkAction *action)
{
GtkRadioAction *radio_action;
GtkToggleAction *toggle_action;
GtkToggleAction *tmp_action;
GSList *tmp_list;
radio_action = GTK_RADIO_ACTION (action);
toggle_action = GTK_TOGGLE_ACTION (action);
if (toggle_action->private_data->active)
{
tmp_list = radio_action->private_data->group;
while (tmp_list)
{
tmp_action = tmp_list->data;
tmp_list = tmp_list->next;
if (tmp_action->private_data->active && (tmp_action != toggle_action))
{
toggle_action->private_data->active = !toggle_action->private_data->active;
break;
}
}
g_object_notify (G_OBJECT (action), "active");
}
else
{
toggle_action->private_data->active = !toggle_action->private_data->active;
g_object_notify (G_OBJECT (action), "active");
tmp_list = radio_action->private_data->group;
while (tmp_list)
{
tmp_action = tmp_list->data;
tmp_list = tmp_list->next;
if (tmp_action->private_data->active && (tmp_action != toggle_action))
{
_gtk_action_emit_activate (GTK_ACTION (tmp_action));
break;
}
}
tmp_list = radio_action->private_data->group;
while (tmp_list)
{
tmp_action = tmp_list->data;
tmp_list = tmp_list->next;
g_object_notify (G_OBJECT (tmp_action), "current-value");
g_signal_emit (tmp_action, radio_action_signals[CHANGED], 0, radio_action);
}
}
gtk_toggle_action_toggled (toggle_action);
}
static GtkWidget *
create_menu_item (GtkAction *action)
{
return g_object_new (GTK_TYPE_CHECK_MENU_ITEM,
"draw-as-radio", TRUE,
NULL);
}
/**
* gtk_radio_action_get_group:
* @action: the action object
*
* Returns the list representing the radio group for this object.
* Note that the returned list is only valid until the next change
* to the group.
*
* A common way to set up a group of radio group is the following:
* |[
* GSList *group = NULL;
* GtkRadioAction *action;
*
* while (/&ast; more actions to add &ast;/)
* {
* action = gtk_radio_action_new (...);
*
* gtk_radio_action_set_group (action, group);
* group = gtk_radio_action_get_group (action);
* }
* ]|
*
* Returns: the list representing the radio group for this object
*
* Since: 2.4
*/
GSList *
gtk_radio_action_get_group (GtkRadioAction *action)
{
g_return_val_if_fail (GTK_IS_RADIO_ACTION (action), NULL);
return action->private_data->group;
}
/**
* gtk_radio_action_set_group:
* @action: the action object
* @group: a list representing a radio group
*
* Sets the radio group for the radio action object.
*
* Since: 2.4
*/
void
gtk_radio_action_set_group (GtkRadioAction *action,
GSList *group)
{
g_return_if_fail (GTK_IS_RADIO_ACTION (action));
g_return_if_fail (!g_slist_find (group, action));
if (action->private_data->group)
{
GSList *slist;
action->private_data->group = g_slist_remove (action->private_data->group, action);
for (slist = action->private_data->group; slist; slist = slist->next)
{
GtkRadioAction *tmp_action = slist->data;
tmp_action->private_data->group = action->private_data->group;
}
}
action->private_data->group = g_slist_prepend (group, action);
if (group)
{
GSList *slist;
for (slist = action->private_data->group; slist; slist = slist->next)
{
GtkRadioAction *tmp_action = slist->data;
tmp_action->private_data->group = action->private_data->group;
}
}
else
{
gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
}
}
/**
* gtk_radio_action_get_current_value:
* @action: a #GtkRadioAction
*
* Obtains the value property of the currently active member of
* the group to which @action belongs.
*
* Return value: The value of the currently active group member
*
* Since: 2.4
**/
gint
gtk_radio_action_get_current_value (GtkRadioAction *action)
{
GSList *slist;
g_return_val_if_fail (GTK_IS_RADIO_ACTION (action), 0);
if (action->private_data->group)
{
for (slist = action->private_data->group; slist; slist = slist->next)
{
GtkToggleAction *toggle_action = slist->data;
if (toggle_action->private_data->active)
return GTK_RADIO_ACTION (toggle_action)->private_data->value;
}
}
return action->private_data->value;
}
/**
* gtk_radio_action_set_current_value:
* @action: a #GtkRadioAction
* @current_value: the new value
*
* Sets the currently active group member to the member with value
* property @current_value.
*
* Since: 2.10
**/
void
gtk_radio_action_set_current_value (GtkRadioAction *action,
gint current_value)
{
GSList *slist;
g_return_if_fail (GTK_IS_RADIO_ACTION (action));
if (action->private_data->group)
{
for (slist = action->private_data->group; slist; slist = slist->next)
{
GtkRadioAction *radio_action = slist->data;
if (radio_action->private_data->value == current_value)
{
gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (radio_action),
TRUE);
return;
}
}
}
if (action->private_data->value == current_value)
gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
else
g_warning ("Radio group does not contain an action with value '%d'",
current_value);
}
#define __GTK_RADIO_ACTION_C__
#include "gtkaliasdef.c"