path: root/calendar/gui/e-timezone-entry.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 * Author :
 *  Damon Chaplin <damon@ximian.com>
 *
 * Copyright 2001, Ximian, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

/*
 * ETimezoneEntry - a field for setting a timezone. It shows the timezone in
 * a GtkEntry with a '...' button beside it which shows a dialog for changing
 * the timezone. The dialog contains a map of the world with a point for each
 * timezone, and an option menu as an alternative way of selecting the
 * timezone.
 */

#include <config.h>
#include <gtk/gtkbutton.h>
#include <gtk/gtkentry.h>
#include <gtk/gtksignal.h>
#include <gnome.h>
#include "dialogs/e-timezone-dialog.h"
#include "e-timezone-entry.h"


struct _ETimezoneEntryPrivate {
    GtkWidget *entry;
    GtkWidget *button;

    CalClient *client;
};


enum {
  CHANGED,
  LAST_SIGNAL
};


static void e_timezone_entry_class_init (ETimezoneEntryClass    *class);
static void e_timezone_entry_init   (ETimezoneEntry *tentry);
static void e_timezone_entry_destroy    (GtkObject  *object);

static void on_entry_changed        (GtkEntry   *entry,
                     ETimezoneEntry *tentry);
static void on_button_clicked       (GtkWidget  *widget,
                     ETimezoneEntry *tentry);


static GtkHBoxClass *parent_class;
static guint timezone_entry_signals[LAST_SIGNAL] = { 0 };


/**
 * e_timezone_entry_get_type:
 *
 * Returns the GtkType for the ETimezoneEntry widget
 */
guint
e_timezone_entry_get_type       (void)
{
    static guint timezone_entry_type = 0;

    if (!timezone_entry_type){
        GtkTypeInfo timezone_entry_info = {
            "ETimezoneEntry",
            sizeof (ETimezoneEntry),
            sizeof (ETimezoneEntryClass),
            (GtkClassInitFunc) e_timezone_entry_class_init,
            (GtkObjectInitFunc) e_timezone_entry_init,
            NULL,
            NULL,
        };

        timezone_entry_type = gtk_type_unique (gtk_hbox_get_type (), &timezone_entry_info);
    }
    
    return timezone_entry_type;
}


static void
e_timezone_entry_class_init     (ETimezoneEntryClass    *class)
{
    GtkObjectClass *object_class = (GtkObjectClass *) class;

    object_class = (GtkObjectClass*) class;

    parent_class = gtk_type_class (gtk_hbox_get_type ());

    timezone_entry_signals[CHANGED] =
        gtk_signal_new ("changed",
                GTK_RUN_LAST,
                object_class->type,
                GTK_SIGNAL_OFFSET (ETimezoneEntryClass,
                           changed),
                gtk_marshal_NONE__NONE,
                GTK_TYPE_NONE, 0);

    gtk_object_class_add_signals (object_class, timezone_entry_signals,
                      LAST_SIGNAL);

    object_class->destroy       = e_timezone_entry_destroy;

    class->changed = NULL;
}


static void
e_timezone_entry_init       (ETimezoneEntry *tentry)
{
    ETimezoneEntryPrivate *priv;

    tentry->priv = priv = g_new0 (ETimezoneEntryPrivate, 1);

    priv->entry  = gtk_entry_new ();
    gtk_entry_set_editable (GTK_ENTRY (priv->entry), FALSE);
    /*gtk_widget_set_usize (priv->date_entry, 90, 0);*/
    gtk_box_pack_start (GTK_BOX (tentry), priv->entry, TRUE, TRUE, 0);
    gtk_widget_show (priv->entry);
    gtk_signal_connect (GTK_OBJECT (priv->entry), "changed",
                GTK_SIGNAL_FUNC (on_entry_changed), tentry);
    
    priv->button = gtk_button_new_with_label ("...");
    gtk_signal_connect (GTK_OBJECT (priv->button), "clicked",
                GTK_SIGNAL_FUNC (on_button_clicked), tentry);
    gtk_box_pack_start (GTK_BOX (tentry), priv->button, FALSE, FALSE, 0);
    gtk_widget_show (priv->button);
}


/**
 * e_timezone_entry_new:
 *
 * Description: Creates a new #ETimezoneEntry widget which can be used
 * to provide an easy to use way for entering dates and times.
 * 
 * Returns: a new #ETimezoneEntry widget.
 */
GtkWidget *
e_timezone_entry_new            (void)
{
    ETimezoneEntry *tentry;

    tentry = gtk_type_new (e_timezone_entry_get_type ());

    return GTK_WIDGET (tentry);
}


static void
e_timezone_entry_destroy        (GtkObject  *object)
{
    ETimezoneEntry *tentry;
    ETimezoneEntryPrivate *priv;

    g_return_if_fail (E_IS_TIMEZONE_ENTRY (object));

    tentry = E_TIMEZONE_ENTRY (object);
    priv = tentry->priv;

    if (priv->client) {
        gtk_object_unref (GTK_OBJECT (priv->client));
        priv->client = NULL;
    }

    g_free (tentry->priv);
    tentry->priv = NULL;

    if (GTK_OBJECT_CLASS (parent_class)->destroy)
        (* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}


/* The arrow button beside the date field has been clicked, so we show the
   popup with the ECalendar in. */
static void
on_button_clicked       (GtkWidget  *widget,
                 ETimezoneEntry *tentry)
{
    ETimezoneEntryPrivate *priv;
    ETimezoneDialog *timezone_dialog;
    GtkWidget *dialog;
    char *zone;

    priv = tentry->priv;

    timezone_dialog = e_timezone_dialog_new ();
    e_timezone_dialog_set_cal_client (timezone_dialog, priv->client);
    zone = e_timezone_entry_get_timezone (tentry);
    e_timezone_dialog_set_timezone (timezone_dialog, zone);

    dialog = e_timezone_dialog_get_toplevel (timezone_dialog);

    if (gnome_dialog_run_and_close (GNOME_DIALOG (dialog)) == 0) {
        zone = e_timezone_dialog_get_timezone (E_TIMEZONE_DIALOG (timezone_dialog));
        e_timezone_entry_set_timezone (tentry, zone);
    }

    gtk_object_unref (GTK_OBJECT (timezone_dialog));
}


/**
 * e_timezone_entry_set_cal_client:
 * @tentry: An #ETimezoneEntry.
 * @client: Calendar client.
 *
 * Sets the calendar client that the timezone entry uses to get the timezone
 * information.
 **/
void
e_timezone_entry_set_cal_client (ETimezoneEntry *tentry, CalClient *client)
{
    ETimezoneEntryPrivate *priv;

    g_return_if_fail (tentry != NULL);
    g_return_if_fail (E_IS_TIMEZONE_ENTRY (tentry));

    priv = tentry->priv;

    if (client == priv->client)
        return;

    if (client) {
        g_return_if_fail (IS_CAL_CLIENT (client));
        gtk_object_ref (GTK_OBJECT (client));
    }

    if (priv->client)
        gtk_object_unref (GTK_OBJECT (priv->client));

    priv->client = client;
}


static void
on_entry_changed            (GtkEntry   *entry,
                     ETimezoneEntry *tentry)
{
    gtk_signal_emit (GTK_OBJECT (tentry), timezone_entry_signals[CHANGED]);
}


char*
e_timezone_entry_get_timezone       (ETimezoneEntry *tentry)
{
    g_return_val_if_fail (E_IS_TIMEZONE_ENTRY (tentry), NULL);

    return gtk_entry_get_text (GTK_ENTRY (tentry->priv->entry));
}


void
e_timezone_entry_set_timezone       (ETimezoneEntry *tentry,
                     char       *timezone)
{
    g_return_if_fail (E_IS_TIMEZONE_ENTRY (tentry));

    gtk_entry_set_text (GTK_ENTRY (tentry->priv->entry), timezone);
}