533 lines
14 KiB
C
533 lines
14 KiB
C
/*
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* GTK - The GIMP Toolkit
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* Copyright (C) 1998, 1999 Red Hat, Inc.
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* All rights reserved.
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*
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* This Library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This Library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with the Gnome Library; see the file COPYING.LIB. If not,
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* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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/*
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* Author: James Henstridge <james@daa.com.au>
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*
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* Modified by the GTK+ Team and others 2003. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#include "config.h"
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#include "gtkradioaction.h"
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#include "gtkradiomenuitem.h"
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#include "gtktoggleactionprivate.h"
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#include "gtktoggletoolbutton.h"
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#include "gtkintl.h"
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#include "gtkprivate.h"
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#include "gtkalias.h"
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#define GTK_RADIO_ACTION_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_RADIO_ACTION, GtkRadioActionPrivate))
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struct _GtkRadioActionPrivate
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{
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GSList *group;
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gint value;
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};
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enum
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{
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CHANGED,
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LAST_SIGNAL
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};
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enum
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{
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PROP_0,
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PROP_VALUE,
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PROP_GROUP,
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PROP_CURRENT_VALUE
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};
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static void gtk_radio_action_finalize (GObject *object);
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static void gtk_radio_action_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec);
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static void gtk_radio_action_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec);
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static void gtk_radio_action_activate (GtkAction *action);
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static GtkWidget *create_menu_item (GtkAction *action);
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G_DEFINE_TYPE (GtkRadioAction, gtk_radio_action, GTK_TYPE_TOGGLE_ACTION)
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static guint radio_action_signals[LAST_SIGNAL] = { 0 };
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static void
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gtk_radio_action_class_init (GtkRadioActionClass *klass)
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{
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GObjectClass *gobject_class;
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GtkActionClass *action_class;
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gobject_class = G_OBJECT_CLASS (klass);
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action_class = GTK_ACTION_CLASS (klass);
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gobject_class->finalize = gtk_radio_action_finalize;
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gobject_class->set_property = gtk_radio_action_set_property;
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gobject_class->get_property = gtk_radio_action_get_property;
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action_class->activate = gtk_radio_action_activate;
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action_class->create_menu_item = create_menu_item;
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/**
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* GtkRadioAction:value:
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*
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* The value is an arbitrary integer which can be used as a
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* convenient way to determine which action in the group is
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* currently active in an ::activate or ::changed signal handler.
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* See gtk_radio_action_get_current_value() and #GtkRadioActionEntry
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* for convenient ways to get and set this property.
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_VALUE,
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g_param_spec_int ("value",
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P_("The value"),
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P_("The value returned by gtk_radio_action_get_current_value() when this action is the current action of its group."),
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G_MININT,
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G_MAXINT,
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0,
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GTK_PARAM_READWRITE));
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/**
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* GtkRadioAction:group:
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*
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* Sets a new group for a radio action.
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*
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* Since: 2.4
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*/
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g_object_class_install_property (gobject_class,
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PROP_GROUP,
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g_param_spec_object ("group",
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P_("Group"),
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P_("The radio action whose group this action belongs to."),
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GTK_TYPE_RADIO_ACTION,
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GTK_PARAM_WRITABLE));
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/**
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* GtkRadioAction:current-value:
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*
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* The value property of the currently active member of the group to which
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* this action belongs.
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*
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* Since: 2.10
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*/
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g_object_class_install_property (gobject_class,
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PROP_CURRENT_VALUE,
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g_param_spec_int ("current-value",
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P_("The current value"),
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P_("The value property of the currently active member of the group to which this action belongs."),
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G_MININT,
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G_MAXINT,
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0,
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GTK_PARAM_READWRITE));
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/**
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* GtkRadioAction::changed:
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* @action: the action on which the signal is emitted
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* @current: the member of @action<!-- -->s group which has just been activated
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*
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* The ::changed signal is emitted on every member of a radio group when the
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* active member is changed. The signal gets emitted after the ::activate signals
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* for the previous and current active members.
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*
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* Since: 2.4
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*/
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radio_action_signals[CHANGED] =
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g_signal_new (I_("changed"),
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G_OBJECT_CLASS_TYPE (klass),
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G_SIGNAL_RUN_FIRST | G_SIGNAL_NO_RECURSE,
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G_STRUCT_OFFSET (GtkRadioActionClass, changed), NULL, NULL,
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g_cclosure_marshal_VOID__OBJECT,
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G_TYPE_NONE, 1, GTK_TYPE_RADIO_ACTION);
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g_type_class_add_private (gobject_class, sizeof (GtkRadioActionPrivate));
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}
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static void
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gtk_radio_action_init (GtkRadioAction *action)
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{
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action->private_data = GTK_RADIO_ACTION_GET_PRIVATE (action);
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action->private_data->group = g_slist_prepend (NULL, action);
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action->private_data->value = 0;
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gtk_toggle_action_set_draw_as_radio (GTK_TOGGLE_ACTION (action), TRUE);
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}
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/**
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* gtk_radio_action_new:
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* @name: A unique name for the action
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* @label: (allow-none): The label displayed in menu items and on buttons, or %NULL
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* @tooltip: (allow-none): A tooltip for this action, or %NULL
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* @stock_id: The stock icon to display in widgets representing this
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* action, or %NULL
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* @value: The value which gtk_radio_action_get_current_value() should
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* return if this action is selected.
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*
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* Creates a new #GtkRadioAction object. To add the action to
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* a #GtkActionGroup and set the accelerator for the action,
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* call gtk_action_group_add_action_with_accel().
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*
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* Return value: a new #GtkRadioAction
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*
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* Since: 2.4
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*/
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GtkRadioAction *
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gtk_radio_action_new (const gchar *name,
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const gchar *label,
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const gchar *tooltip,
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const gchar *stock_id,
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gint value)
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{
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g_return_val_if_fail (name != NULL, NULL);
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return g_object_new (GTK_TYPE_RADIO_ACTION,
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"name", name,
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"label", label,
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"tooltip", tooltip,
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"stock-id", stock_id,
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"value", value,
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NULL);
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}
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static void
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gtk_radio_action_finalize (GObject *object)
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{
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GtkRadioAction *action;
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GSList *tmp_list;
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action = GTK_RADIO_ACTION (object);
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action->private_data->group = g_slist_remove (action->private_data->group, action);
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tmp_list = action->private_data->group;
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while (tmp_list)
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{
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GtkRadioAction *tmp_action = tmp_list->data;
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tmp_list = tmp_list->next;
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tmp_action->private_data->group = action->private_data->group;
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}
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G_OBJECT_CLASS (gtk_radio_action_parent_class)->finalize (object);
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}
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static void
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gtk_radio_action_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GtkRadioAction *radio_action;
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radio_action = GTK_RADIO_ACTION (object);
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switch (prop_id)
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{
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case PROP_VALUE:
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radio_action->private_data->value = g_value_get_int (value);
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break;
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case PROP_GROUP:
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{
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GtkRadioAction *arg;
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GSList *slist = NULL;
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if (G_VALUE_HOLDS_OBJECT (value))
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{
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arg = GTK_RADIO_ACTION (g_value_get_object (value));
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if (arg)
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slist = gtk_radio_action_get_group (arg);
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gtk_radio_action_set_group (radio_action, slist);
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}
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}
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break;
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case PROP_CURRENT_VALUE:
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gtk_radio_action_set_current_value (radio_action,
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g_value_get_int (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_radio_action_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GtkRadioAction *radio_action;
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radio_action = GTK_RADIO_ACTION (object);
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switch (prop_id)
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{
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case PROP_VALUE:
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g_value_set_int (value, radio_action->private_data->value);
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break;
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case PROP_CURRENT_VALUE:
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g_value_set_int (value,
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gtk_radio_action_get_current_value (radio_action));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gtk_radio_action_activate (GtkAction *action)
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{
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GtkRadioAction *radio_action;
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GtkToggleAction *toggle_action;
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GtkToggleAction *tmp_action;
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GSList *tmp_list;
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radio_action = GTK_RADIO_ACTION (action);
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toggle_action = GTK_TOGGLE_ACTION (action);
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if (toggle_action->private_data->active)
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{
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tmp_list = radio_action->private_data->group;
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while (tmp_list)
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{
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tmp_action = tmp_list->data;
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tmp_list = tmp_list->next;
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if (tmp_action->private_data->active && (tmp_action != toggle_action))
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{
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toggle_action->private_data->active = !toggle_action->private_data->active;
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break;
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}
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}
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g_object_notify (G_OBJECT (action), "active");
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}
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else
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{
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toggle_action->private_data->active = !toggle_action->private_data->active;
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g_object_notify (G_OBJECT (action), "active");
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tmp_list = radio_action->private_data->group;
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while (tmp_list)
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{
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tmp_action = tmp_list->data;
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tmp_list = tmp_list->next;
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if (tmp_action->private_data->active && (tmp_action != toggle_action))
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{
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_gtk_action_emit_activate (GTK_ACTION (tmp_action));
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break;
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}
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}
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tmp_list = radio_action->private_data->group;
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while (tmp_list)
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{
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tmp_action = tmp_list->data;
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tmp_list = tmp_list->next;
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g_object_notify (G_OBJECT (tmp_action), "current-value");
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g_signal_emit (tmp_action, radio_action_signals[CHANGED], 0, radio_action);
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}
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}
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gtk_toggle_action_toggled (toggle_action);
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}
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static GtkWidget *
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create_menu_item (GtkAction *action)
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{
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return g_object_new (GTK_TYPE_CHECK_MENU_ITEM,
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"draw-as-radio", TRUE,
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NULL);
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}
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/**
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* gtk_radio_action_get_group:
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* @action: the action object
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*
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* Returns the list representing the radio group for this object.
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* Note that the returned list is only valid until the next change
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* to the group.
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*
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* A common way to set up a group of radio group is the following:
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* |[
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* GSList *group = NULL;
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* GtkRadioAction *action;
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*
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* while (/* more actions to add */)
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* {
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* action = gtk_radio_action_new (...);
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*
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* gtk_radio_action_set_group (action, group);
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* group = gtk_radio_action_get_group (action);
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* }
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* ]|
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*
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* Returns: (element-type GtkAction) (transfer none): the list representing the radio group for this object
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*
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* Since: 2.4
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*/
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GSList *
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gtk_radio_action_get_group (GtkRadioAction *action)
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{
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g_return_val_if_fail (GTK_IS_RADIO_ACTION (action), NULL);
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return action->private_data->group;
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}
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/**
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* gtk_radio_action_set_group:
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* @action: the action object
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* @group: a list representing a radio group
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*
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* Sets the radio group for the radio action object.
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*
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* Since: 2.4
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*/
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void
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gtk_radio_action_set_group (GtkRadioAction *action,
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GSList *group)
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{
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g_return_if_fail (GTK_IS_RADIO_ACTION (action));
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g_return_if_fail (!g_slist_find (group, action));
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if (action->private_data->group)
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{
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GSList *slist;
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action->private_data->group = g_slist_remove (action->private_data->group, action);
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for (slist = action->private_data->group; slist; slist = slist->next)
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{
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GtkRadioAction *tmp_action = slist->data;
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tmp_action->private_data->group = action->private_data->group;
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}
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}
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action->private_data->group = g_slist_prepend (group, action);
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if (group)
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{
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GSList *slist;
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for (slist = action->private_data->group; slist; slist = slist->next)
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{
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GtkRadioAction *tmp_action = slist->data;
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tmp_action->private_data->group = action->private_data->group;
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}
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}
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else
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{
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gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
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}
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}
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/**
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* gtk_radio_action_get_current_value:
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* @action: a #GtkRadioAction
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*
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* Obtains the value property of the currently active member of
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* the group to which @action belongs.
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*
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* Return value: The value of the currently active group member
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*
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* Since: 2.4
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**/
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gint
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gtk_radio_action_get_current_value (GtkRadioAction *action)
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{
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GSList *slist;
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g_return_val_if_fail (GTK_IS_RADIO_ACTION (action), 0);
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if (action->private_data->group)
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{
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for (slist = action->private_data->group; slist; slist = slist->next)
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{
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GtkToggleAction *toggle_action = slist->data;
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if (toggle_action->private_data->active)
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return GTK_RADIO_ACTION (toggle_action)->private_data->value;
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}
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}
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return action->private_data->value;
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}
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/**
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* gtk_radio_action_set_current_value:
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* @action: a #GtkRadioAction
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* @current_value: the new value
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*
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* Sets the currently active group member to the member with value
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* property @current_value.
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*
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* Since: 2.10
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**/
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void
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gtk_radio_action_set_current_value (GtkRadioAction *action,
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gint current_value)
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{
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GSList *slist;
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g_return_if_fail (GTK_IS_RADIO_ACTION (action));
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if (action->private_data->group)
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{
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for (slist = action->private_data->group; slist; slist = slist->next)
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{
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GtkRadioAction *radio_action = slist->data;
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if (radio_action->private_data->value == current_value)
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{
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gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (radio_action),
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TRUE);
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return;
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}
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}
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}
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if (action->private_data->value == current_value)
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gtk_toggle_action_set_active (GTK_TOGGLE_ACTION (action), TRUE);
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else
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g_warning ("Radio group does not contain an action with value '%d'",
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current_value);
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}
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#define __GTK_RADIO_ACTION_C__
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#include "gtkaliasdef.c"
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