datetime.c

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/*
 * File Name: datetime.c
 */

/*
 * This file is part of settings.
 *
 * settings 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.
 *
 * settings 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, see <http://www.gnu.org/licenses/>.
 */

/**
 * Copyright (C) 2008 iRex Technologies B.V.
 * All rights reserved.
 */

//----------------------------------------------------------------------------
// Include Files
//----------------------------------------------------------------------------

// system include files, between < >
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <glib.h>
#include <gdk/gdkkeysyms.h>

#include <libergtk/ergtk.h>

#include "i18n.h"
#include "log.h"
#include "settings.h"
#include "settings_utils.h"
#include "settings_style.h"
#include "datetime_base.h"
#include "datetime.h"

//----------------------------------------------------------------------------
// Static Variables
//----------------------------------------------------------------------------
static DateTimeSettings g_settings;
static DateTimeWidgets  g_widgets;

static GtkWidget* g_list_view           = NULL;
static GtkWidget* g_top_window          = NULL;

//============================================================================
// Local Function Definitions
//============================================================================
static void locale_changed (void);

// Signal handlers.
static gboolean on_button_focus_in(GtkWidget* widget, 
                                   GdkEventFocus* event, 
                                   gpointer data);

//============================================================================
// Functions Implementation
//============================================================================
void load_datetime_settings()
{
    LOGPRINTF("entry");

    datetime_base_load_datetime(&g_settings);
}

void save_datetime_settings()
{
    LOGPRINTF("entry");

    if ( ! datetime_base_save_datetime(&g_widgets, &g_settings) )
    {
        LOGPRINTF("save datetime failed.");
        /* Create a messagebox. */
        GtkWidget *dialog = gtk_message_dialog_new(
                GTK_WINDOW(g_top_window), 
                GTK_DIALOG_MODAL,
                GTK_MESSAGE_WARNING, 
                GTK_BUTTONS_OK,
                _("The date was not saved.") );

        gtk_dialog_run(GTK_DIALOG(dialog));
        gtk_widget_destroy(dialog);
    }
}

// Widget Hierarchy
// |--top_window
//    |--vboxtop
//       |--title bar
//       |--back area
//       |--time
//       |--date
GtkWidget* create_datetime_window(GtkWidget* parent)
{
    LOGPRINTF("entry");
    // create top window
    g_top_window = parent;
    gtk_window_maximize(GTK_WINDOW(parent));
    gtk_window_set_resizable(GTK_WINDOW(parent), FALSE);
    gtk_container_set_border_width(GTK_CONTAINER(parent),WINDOW_BORDER_PADDING  );
    gtk_window_set_modal(GTK_WINDOW(parent), TRUE);

    // top level vbox (vboxtop)
    GtkWidget* vboxtop = gtk_vbox_new(FALSE, 0);
    gtk_container_add(GTK_CONTAINER(parent), vboxtop);

    // add header container the title and subtitle of this settings page
    create_title(GTK_VBOX(vboxtop), _("Settings"), _("Time & Date"));
    
    // add the back/exit bar below the title 
    g_list_view = create_settingsview_for_type( SETTING_DATETIME );
    gtk_box_pack_start(GTK_BOX(vboxtop), g_list_view, FALSE, FALSE, 0); 

    // Time and date.
    datetime_base_create_widgets(&g_widgets, &g_settings);
    g_signal_connect(G_OBJECT(g_widgets.hidden_button),
                    "focus-in-event",
                    G_CALLBACK(on_button_focus_in),
                    (gpointer) NULL );
    gtk_box_pack_start(GTK_BOX(vboxtop), g_widgets.parent, FALSE, FALSE, 0);

    // Set the text.
    locale_changed();

    gtk_widget_grab_focus(g_list_view);

    gtk_widget_show_all(parent);

    return parent;
}

void datetime_set_main_focus(void)
{
    gtk_widget_grab_focus(GTK_WIDGET(g_widgets.timezone_button));
}

void datetime_set_orientation(gboolean is_portrait )
{
    LOGPRINTF("entry");
    g_widgets.is_portrait = is_portrait;
}

//============================================================================
// Local Functions Implementation
//============================================================================

static void locale_changed()
{
    LOGPRINTF("entry");

    // Timezone section.
    gtk_label_set_label(GTK_LABEL(g_widgets.label_timezone), _("Time Zone"));
    gtk_label_set_label(GTK_LABEL(g_widgets.label_timezone_desc),
            _("Tap on the up or down arrow to scroll through the time zones. "
              "Setting this to the area where you reside is essential for "
              "purchased content to work correctly."));
    gtk_label_set_label(GTK_LABEL(g_widgets.label_dst_desc),
            _("Check the box below if daylight saving time (DST) is currently "
              "in effect in your location."));
    
    // Time section.
    gtk_label_set_label(GTK_LABEL(g_widgets.label_time), _("Time"));
    gtk_label_set_label(GTK_LABEL(g_widgets.label_time_desc),
            _("Tap on the up or down arrow to scroll through the numbers."));
  
    // Date section.
    gtk_label_set_label(GTK_LABEL(g_widgets.label_date), _("Date"));
    gtk_label_set_label(GTK_LABEL(g_widgets.label_date_desc),
            _("Tap on the up or down arrow to scroll through the numbers."));

    datetime_base_locale_changed(&g_widgets, &g_settings);
}

static gboolean change_focus(gpointer data)
{
    gtk_widget_grab_focus(GTK_WIDGET(data));
    return FALSE; // once
}

static gboolean on_button_focus_in(GtkWidget* widget,  
                                   GdkEventFocus* event, 
                                   gpointer data)
{
    // timeout is needed, otherwise the year spin button does not 
    // update its cursor on focus out
    g_timeout_add(200, change_focus, (gpointer)g_list_view);
    return FALSE;
}