path: root/src/ephy-navigation-action.c

/*
 *  Copyright (C) 2003 Marco Pesenti Gritti
 *
 *  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.
 */

#include "ephy-navigation-action.h"
#include "ephy-arrow-toolbutton.h"
#include "ephy-window.h"
#include "ephy-string.h"
#include "ephy-debug.h"

static void ephy_navigation_action_init       (EphyNavigationAction *action);
static void ephy_navigation_action_class_init (EphyNavigationActionClass *class);

static GObjectClass *parent_class = NULL;

struct EphyNavigationActionPrivate
{
    EphyWindow *window;
    EphyNavigationDirection direction;
};

enum
{
    PROP_0,
    PROP_DIRECTION,
    PROP_WINDOW
};

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

    if (!type)
    {
        static const GTypeInfo type_info =
        {
            sizeof (EphyNavigationActionClass),
            (GBaseInitFunc) NULL,
            (GBaseFinalizeFunc) NULL,
            (GClassInitFunc) ephy_navigation_action_class_init,
            (GClassFinalizeFunc) NULL,
            NULL,
            sizeof (EphyNavigationAction),
            0, /* n_preallocs */
            (GInstanceInitFunc) ephy_navigation_action_init,
        };

        type = g_type_register_static (EGG_TYPE_ACTION,
                           "EphyNavigationAction",
                           &type_info, 0);
    }
    return type;
}

#define MAX_LENGTH 60

static GtkWidget *
new_history_menu_item (char *origtext,
                       GdkPixbuf *icon)
{
    GtkWidget *item, *image;
    char *short_text;

    short_text = ephy_string_shorten (origtext, MAX_LENGTH);
    item = gtk_image_menu_item_new_with_label (short_text);
    g_free (short_text);

    image = gtk_image_new_from_pixbuf (icon);
    gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (item), image);
    gtk_widget_show (item);

    return item;
}

static void
activate_back_or_forward_menu_item_cb (GtkWidget *menu, EphyWindow *window)
{
    EphyEmbed *embed;
    int go_nth;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    go_nth = GPOINTER_TO_INT(g_object_get_data (G_OBJECT(menu), "go_nth"));

    ephy_embed_shistory_go_nth (embed, go_nth);
}

static void
activate_up_menu_item_cb (GtkWidget *menu, EphyWindow *window)
{
    EphyEmbed *embed;
    int go_nth;
    GSList *l;
    gchar *url;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    go_nth = GPOINTER_TO_INT(g_object_get_data (G_OBJECT(menu), "go_nth"));

    ephy_embed_get_go_up_list (embed, &l);

    url = g_slist_nth_data (l, go_nth);
    if (url)
    {
        ephy_window_load_url (window, url);
    }

    g_slist_foreach (l, (GFunc) g_free, NULL);
    g_slist_free (l);
}

static void
setup_back_or_forward_menu (EphyWindow *window, GtkMenuShell *ms, EphyNavigationDirection dir)
{
    int pos, count;
    EphyEmbed *embed;
    int start, end;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    ephy_embed_shistory_get_pos (embed, &pos);
    ephy_embed_shistory_count (embed, &count);

    if (count == 0) return;

    if (dir == EPHY_NAVIGATION_DIRECTION_BACK)
    {
        start = pos - 1;
        end = -1;
    }
    else
    {
        start = pos + 1;
        end = count;
    }

    while (start != end)
    {
        char *title, *url;
        GtkWidget *item;
        ephy_embed_shistory_get_nth (embed, start, FALSE, &url, &title);
        item = new_history_menu_item (title ? title : url, NULL);
        gtk_menu_shell_append (ms, item);
        g_object_set_data (G_OBJECT (item), "go_nth", GINT_TO_POINTER (start));
        g_signal_connect (item, "activate",
                                  G_CALLBACK (activate_back_or_forward_menu_item_cb), window);
        gtk_widget_show_all (item);

        g_free (url);
        g_free (title);

        if (start < end)
        {
            start++;
        }
        else
        {
            start--;
        }
    }
}

static void
setup_up_menu (EphyWindow *window, GtkMenuShell *ms)
{
    EphyEmbed *embed;
    GSList *l;
    GSList *li;
    int count = 0;

    embed = ephy_window_get_active_embed (window);
    g_return_if_fail (embed != NULL);

    ephy_embed_get_go_up_list (embed, &l);

    for (li = l; li; li = li->next)
    {
        char *url = li->data;
        GtkWidget *item;

        item = new_history_menu_item (url, NULL);
        gtk_menu_shell_append (ms, item);
        g_object_set_data (G_OBJECT(item), "go_nth", GINT_TO_POINTER (count));
        g_signal_connect (item, "activate",
                                  G_CALLBACK (activate_up_menu_item_cb), window);
        gtk_widget_show_all (item);
        count ++;
    }

    g_slist_foreach (l, (GFunc) g_free, NULL);
    g_slist_free (l);
}

static void
menu_activated_cb (EphyArrowToolButton *w, EphyNavigationAction *b)
{
    EphyNavigationActionPrivate *p = b->priv;
    GtkMenuShell *ms = ephy_arrow_toolbutton_get_menu (w);
    EphyWindow *win = b->priv->window;
    GList *children;
    GList *li;

    LOG ("Show navigation menu")

    children = gtk_container_get_children (GTK_CONTAINER (ms));
    for (li = children; li; li = li->next)
    {
        gtk_container_remove (GTK_CONTAINER (ms), li->data);
    }
    g_list_free (children);

    switch (p->direction)
    {
    case EPHY_NAVIGATION_DIRECTION_UP:
        setup_up_menu (win, ms);
        break;
    case EPHY_NAVIGATION_DIRECTION_FORWARD:
    case EPHY_NAVIGATION_DIRECTION_BACK:
        setup_back_or_forward_menu (win, ms, p->direction);
        break;
    default:
        g_assert_not_reached ();
        break;
    }
}

static void
connect_proxy (EggAction *action, GtkWidget *proxy)
{
    LOG ("Connect navigation action proxy")

    g_signal_connect (proxy, "menu-activated",
              G_CALLBACK (menu_activated_cb), action);

    (* EGG_ACTION_CLASS (parent_class)->connect_proxy) (action, proxy);
}

static void
ephy_navigation_action_set_property (GObject *object,
                                     guint prop_id,
                                     const GValue *value,
                                     GParamSpec *pspec)
{
    EphyNavigationAction *nav;

    nav = EPHY_NAVIGATION_ACTION (object);

    switch (prop_id)
    {
        case PROP_DIRECTION:
            nav->priv->direction = g_value_get_int (value);
            break;
        case PROP_WINDOW:
            nav->priv->window = EPHY_WINDOW (g_value_get_object (value));
            break;
    }
}

static void
ephy_navigation_action_get_property (GObject *object,
                                     guint prop_id,
                                     GValue *value,
                                     GParamSpec *pspec)
{
    EphyNavigationAction *nav;

    nav = EPHY_NAVIGATION_ACTION (object);

    switch (prop_id)
    {
        case PROP_DIRECTION:
            g_value_set_int (value, nav->priv->direction);
            break;
        case PROP_WINDOW:
            g_value_set_object (value, nav->priv->window);
            break;
    }
}

static void
ephy_navigation_action_finalize (GObject *object)
{
    EphyNavigationAction *action = EPHY_NAVIGATION_ACTION (object);

    g_return_if_fail (action->priv != NULL);

    g_free (action->priv);

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

static void
ephy_navigation_action_class_init (EphyNavigationActionClass *class)
{
    EggActionClass *action_class;
    GObjectClass *object_class = G_OBJECT_CLASS (class);

    object_class->finalize = ephy_navigation_action_finalize;
    object_class->set_property = ephy_navigation_action_set_property;
    object_class->get_property = ephy_navigation_action_get_property;

    parent_class = g_type_class_peek_parent (class);
    action_class = EGG_ACTION_CLASS (class);

    action_class->toolbar_item_type = EPHY_ARROW_TOOLBUTTON_TYPE;
    action_class->connect_proxy = connect_proxy;

    g_object_class_install_property (object_class,
                                         PROP_DIRECTION,
                                         g_param_spec_int ("direction",
                                                           "Direction",
                                                           "Direction",
                                                           0,
                               G_MAXINT,
                               0,
                                                           G_PARAM_READWRITE));
    g_object_class_install_property (object_class,
                                         PROP_WINDOW,
                                         g_param_spec_object ("window",
                                                              "Window",
                                                              "The navigation window",
                                                              G_TYPE_OBJECT,
                                                              G_PARAM_READWRITE));

}

static void
ephy_navigation_action_init (EphyNavigationAction *action)
{
        action->priv = g_new0 (EphyNavigationActionPrivate, 1);
}