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/*
 *  Copyright (C) 2002 Jorn Baayen
 *  Copyright (C) 2003, 2004 Marco Pesenti Gritti
 *  Copyright (C) 2004 Christian Persch
 *
 *  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, 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.
 *
 *  $Id$
 */

#include "config.h"

#include "ephy-statusbar.h"
#include "ephy-stock-icons.h"

#include <string.h>
#include <glib/gi18n.h>
#include <gtk/gtklabel.h>   
#include <gtk/gtkprogressbar.h>
#include <gtk/gtkeventbox.h>
#include <gtk/gtkimage.h>
#include <gtk/gtkframe.h>
#include <gtk/gtkwidget.h>

static void ephy_statusbar_class_init   (EphyStatusbarClass *klass);
static void ephy_statusbar_init     (EphyStatusbar *t);
static void ephy_statusbar_finalize (GObject *object);

static GObjectClass *parent_class = NULL;

#define EPHY_STATUSBAR_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_STATUSBAR, EphyStatusbarPrivate))

struct _EphyStatusbarPrivate
{
    GtkWidget *icon_container;

    GtkWidget *caret_indicator;
    GtkWidget *security_icon;
    GtkWidget *progressbar;
    GtkWidget *security_evbox;
    GtkWidget *popups_manager_icon;
    GtkWidget *popups_manager_evbox;
};

GType
ephy_statusbar_get_type (void)
{
    static GType type = 0;

    if (G_UNLIKELY (type == 0))
    {
        static const GTypeInfo our_info =
        {
            sizeof (EphyStatusbarClass),
            NULL, /* base_init */
            NULL, /* base_finalize */
            (GClassInitFunc) ephy_statusbar_class_init,
            NULL,
            NULL, /* class_data */
            sizeof (EphyStatusbar),
            0, /* n_preallocs */
            (GInstanceInitFunc) ephy_statusbar_init
        };

        type = g_type_register_static (GTK_TYPE_STATUSBAR,
                           "EphyStatusbar",
                           &our_info, 0);
    }

    return type;
}

static void
ephy_statusbar_class_init (EphyStatusbarClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    parent_class = g_type_class_peek_parent (klass);

    object_class->finalize = ephy_statusbar_finalize;

    g_type_class_add_private (object_class, sizeof (EphyStatusbarPrivate));
}

static void
create_caret_indicator (EphyStatusbar *statusbar)
{
    EphyStatusbarPrivate *priv = statusbar->priv;
    GtkWidget *label, *ebox;

    priv->caret_indicator = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (priv->caret_indicator),
                   GTK_SHADOW_IN);
    ebox = gtk_event_box_new ();
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (ebox), FALSE);
    gtk_container_add (GTK_CONTAINER (priv->caret_indicator), ebox);
    gtk_widget_show (ebox);

    /* Translators: this is displayed in the statusbar; choose a short word
     * or even an abbreviation.
     */
    label = gtk_label_new (_("Caret"));
    gtk_container_add (GTK_CONTAINER (ebox), label);
    gtk_widget_show (label);

    gtk_tooltips_set_tip (statusbar->tooltips, ebox,
                  /* Translators: this is the tooltip on the "Caret" icon
                   * in the statusbar.
                   */
                  _("In keyboard selection mode, press F7 to exit"),
                  NULL);

    gtk_box_pack_start (GTK_BOX (priv->icon_container), priv->caret_indicator,
                FALSE, FALSE, 0);
}

static void
create_statusbar_security_icon (EphyStatusbar *s)
{
    s->security_frame = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (s->security_frame),
                   GTK_SHADOW_IN);

    s->priv->security_icon = gtk_image_new ();
    s->priv->security_evbox = gtk_event_box_new ();
    gtk_event_box_set_visible_window (GTK_EVENT_BOX (s->priv->security_evbox),
                      FALSE);
    gtk_container_add (GTK_CONTAINER (s->security_frame),
               GTK_WIDGET (s->priv->security_evbox));
    gtk_container_add (GTK_CONTAINER (s->priv->security_evbox),
               GTK_WIDGET (s->priv->security_icon));

    ephy_statusbar_set_security_state (s, NULL, NULL);

    gtk_widget_show_all (s->security_frame);

    gtk_box_pack_start (GTK_BOX (s->priv->icon_container),
                GTK_WIDGET (s->security_frame),
                FALSE, TRUE, 0);
}

static void
create_statusbar_popups_manager_icon (EphyStatusbar *s)
{
    s->popups_manager_frame = gtk_frame_new (NULL);
    gtk_frame_set_shadow_type (GTK_FRAME (s->popups_manager_frame),
                   GTK_SHADOW_IN);

    s->priv->popups_manager_icon = gtk_image_new_from_stock
        (EPHY_STOCK_POPUPS, GTK_ICON_SIZE_MENU);

    s->priv->popups_manager_evbox = gtk_event_box_new ();

    gtk_event_box_set_visible_window
        (GTK_EVENT_BOX (s->priv->popups_manager_evbox), FALSE);

    gtk_container_add (GTK_CONTAINER (s->popups_manager_frame),
               GTK_WIDGET (s->priv->popups_manager_evbox));
    gtk_container_add (GTK_CONTAINER (s->priv->popups_manager_evbox),
               GTK_WIDGET (s->priv->popups_manager_icon));

    gtk_widget_show (s->priv->popups_manager_evbox);
    gtk_widget_show (s->priv->popups_manager_icon);

    /* note lack of gtk_widget_show (s->popups_manager_frame); */

    gtk_box_pack_start (GTK_BOX (s->priv->icon_container),
                GTK_WIDGET (s->popups_manager_frame),
                FALSE, TRUE, 0);
}

static void
create_statusbar_progress (EphyStatusbar *s)
{
    s->priv->progressbar = gtk_progress_bar_new ();
    gtk_widget_show_all (s->priv->progressbar);

    gtk_box_pack_end (GTK_BOX (s),
              GTK_WIDGET (s->priv->progressbar),
              FALSE, TRUE, 0);
}

static void
sync_shadow_type (EphyStatusbar *statusbar,
          GtkStyle *previous_style,
          gpointer dummy)
{
    GtkShadowType shadow;
    GList *children, *l;

    gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type",
                  &shadow, NULL);

    children = gtk_container_get_children
        (GTK_CONTAINER (statusbar->priv->icon_container));
    for (l = children; l != NULL; l = l->next)
    {
        if (GTK_IS_FRAME (l->data))
        {
            gtk_frame_set_shadow_type (GTK_FRAME (l->data), shadow);
        }
    }
    g_list_free (children);
}

static void
ephy_statusbar_init (EphyStatusbar *t)
{
    t->priv = EPHY_STATUSBAR_GET_PRIVATE (t);

    t->tooltips = gtk_tooltips_new ();
    g_object_ref (G_OBJECT (t->tooltips));
    gtk_object_sink (GTK_OBJECT (t->tooltips));

    t->priv->icon_container = gtk_hbox_new (FALSE, 0);
    gtk_box_pack_start (GTK_BOX (t), t->priv->icon_container, FALSE, FALSE, 0);
    gtk_box_reorder_child (GTK_BOX (t), t->priv->icon_container, 0);
    gtk_widget_show (t->priv->icon_container);

    gtk_statusbar_set_has_resize_grip (GTK_STATUSBAR (t), TRUE);

    create_statusbar_progress (t);
    create_statusbar_security_icon (t);
    create_statusbar_popups_manager_icon (t);
    create_caret_indicator (t);

    sync_shadow_type (t, NULL, NULL);
    g_signal_connect (t, "style-set", G_CALLBACK (sync_shadow_type), NULL);
}

static void
ephy_statusbar_finalize (GObject *object)
{
    EphyStatusbar *t = EPHY_STATUSBAR (object);

    g_object_unref (t->tooltips);

    G_OBJECT_CLASS (parent_class)->finalize (object);
}

/**
 * ephy_statusbar_new:
 * 
 * Creates a new #EphyStatusbar.
 * 
 * Return value: the new #EphyStatusbar object
 **/
GtkWidget *
ephy_statusbar_new (void)
{
    return GTK_WIDGET (g_object_new (EPHY_TYPE_STATUSBAR, NULL));
}

/**
 * ephy_statusbar_set_caret_mode:
 * @statusbar: an #EphyStatusbar
 * @enabled:
 * 
 * Sets the statusbar's caret browsing mode indicator.
 **/
void
ephy_statusbar_set_caret_mode (EphyStatusbar *statusbar,
                   gboolean enabled)
{
    EphyStatusbarPrivate *priv = statusbar->priv;

    enabled = enabled != FALSE;

    g_object_set (priv->caret_indicator, "visible", enabled, NULL);
}

/**
 * ephy_statusbar_set_security_state:
 * @statusbar: an #EphyStatusbar
 * @stock_id: stock-id of the icon showing the security state
 * @tooltip: a string detailing the security state
 * 
 * Sets the statusbar's security icon and its tooltip.
 **/
void
ephy_statusbar_set_security_state (EphyStatusbar *statusbar,
                   const char *stock_id,
                   const char *tooltip)
{
    gtk_image_set_from_stock (GTK_IMAGE (statusbar->priv->security_icon),
                  stock_id, GTK_ICON_SIZE_MENU);

    gtk_tooltips_set_tip (statusbar->tooltips, statusbar->priv->security_evbox,
                  tooltip, NULL);
}

/**
 * ephy_statusbar_set_popups_state:
 * @statusbar: an #EphyStatusbar
 * @hidden: %TRUE if popups have been hidden
 * @tooltip: a string to display as tooltip, or %NULL
 *
 * Sets the statusbar's popup-blocker icon's tooltip and visibility.
 **/
void
ephy_statusbar_set_popups_state (EphyStatusbar *statusbar,
                 gboolean hidden,
                 const char *tooltip)
{
    if (hidden)
    {
        gtk_widget_hide (statusbar->popups_manager_frame);
    }
    else
    {
        gtk_tooltips_set_tip (statusbar->tooltips,
                      statusbar->priv->popups_manager_evbox,
                      tooltip, NULL);

        gtk_widget_show (statusbar->popups_manager_frame);
    }
}

/**
 * ephy_statusbar_set_progress:
 * @statusbar: a #EphyStatusbar
 * @progress: the progress as an integer between 0 and 100 per cent.
 * 
 * Sets the statusbar's progress.
 **/
void
ephy_statusbar_set_progress (EphyStatusbar *statusbar,
                 int progress)
{
    gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (statusbar->priv->progressbar),
                       (float) (progress) / 100.0);

    if (progress < 100)
    {
        gtk_widget_show (statusbar->priv->progressbar);
    }
    else
    {
        gtk_widget_hide (statusbar->priv->progressbar);
    }
}

/**
 * ephy_statusbar_add_widget:
 * @statusbar: an #EphyStatusbar
 * @widget: a #GtkWidget
 * 
 * Adds the @widget to the statusbar. Use this function whenever you want to
 * add a widget to the statusbar. You can remove the widget again with
 * ephy_statusbar_remove_widget().
 **/
void
ephy_statusbar_add_widget (EphyStatusbar *statusbar,
               GtkWidget *widget)
{
    g_return_if_fail (EPHY_IS_STATUSBAR (statusbar));
    g_return_if_fail (GTK_IS_WIDGET (widget));

    gtk_box_pack_start (GTK_BOX (statusbar->priv->icon_container),
                widget, FALSE, FALSE, 0);

    if (GTK_IS_FRAME (widget))
    {
        GtkShadowType shadow;

        gtk_widget_style_get (GTK_WIDGET (statusbar), "shadow-type",
                      &shadow, NULL);
        gtk_frame_set_shadow_type (GTK_FRAME (widget), shadow);
    }
}

/**
 * ephy_statusbar_remove_widget:
 * @statusbar: an #EphyStatusbar
 * @widget: a #GtkWidget
 *
 * Removes @widget, which must have been added to @statusbar using
 * ephy_statusbar_add_widget ().
 */
void
ephy_statusbar_remove_widget (EphyStatusbar *statusbar,
                  GtkWidget *widget)
{
    g_return_if_fail (EPHY_IS_STATUSBAR (statusbar));
    g_return_if_fail (GTK_IS_WIDGET (widget));

    gtk_container_remove (GTK_CONTAINER (statusbar->priv->icon_container),
                  widget);
}


/**
 * ephy_statusbar_get_tooltips:
 * @statusbar: an #EphyStatusbar
 *
 * Return value: the statusbar's #GtkTooltips object
 */
GtkTooltips *
ephy_statusbar_get_tooltips (EphyStatusbar *statusbar)
{
    g_return_val_if_fail (EPHY_IS_STATUSBAR (statusbar), NULL);

    return statusbar->tooltips;
}

/**
 * ephy_statusbar_get_security_frame:
 * @statusbar: an #EphyStatusbar
 *
 * Return value: the statusbar's lock icon frame
 */
GtkWidget *
ephy_statusbar_get_security_frame (EphyStatusbar *statusbar)
{
    g_return_val_if_fail (EPHY_IS_STATUSBAR (statusbar), NULL);

    return statusbar->security_frame;
}