path: root/src/ephy-tabs-menu.c

/*
 *  Copyright (C) 2003  David Bordoley
 *
 *  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.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "ephy-tabs-menu.h"
#include "ephy-gobject-misc.h"
#include "ephy-string.h"
#include "egg-menu-merge.h"
#include "ephy-marshal.h"
#include "ephy-shell.h"
#include "ephy-debug.h"

#include <string.h>
#include <stdlib.h>
#include <libxml/entities.h>

#define MAX_LABEL_LENGTH 30

/**
 * Private data
 */
struct _EphyTabsMenuPrivate
{
    EphyWindow *window;
    EggActionGroup *action_group;
    guint ui_id;
};

/**
 * Private functions, only availble from this file
 */
static void ephy_tabs_menu_class_init   (EphyTabsMenuClass *klass);
static void ephy_tabs_menu_init     (EphyTabsMenu *menu);
static void ephy_tabs_menu_finalize_impl    (GObject *o);

enum
{
    PROP_0,
    PROP_WINDOW
};

static gpointer g_object_class;

/**
 * EphyTabsMenu object
 */

GType
ephy_tabs_menu_get_type (void)
{
        static GType ephy_tabs_menu_type = 0;

        if (ephy_tabs_menu_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (EphyTabsMenuClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) ephy_tabs_menu_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (EphyTab),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) ephy_tabs_menu_init
                };

                ephy_tabs_menu_type = g_type_register_static (G_TYPE_OBJECT,
                                  "EphyTabsMenu",
                                  &our_info, 0);
        }

        return ephy_tabs_menu_type;
}

static void
ephy_tabs_menu_set_property (GObject *object,
                 guint prop_id,
                 const GValue *value,
                 GParamSpec *pspec)
{
        EphyTabsMenu *m = EPHY_TABS_MENU (object);

        switch (prop_id)
        {
                case PROP_WINDOW:
                        m->priv->window = g_value_get_object (value);
                        break;
        }
}

static void
ephy_tabs_menu_get_property (GObject *object,
                             guint prop_id,
                             GValue *value,
                             GParamSpec *pspec)
{
        EphyTabsMenu *m = EPHY_TABS_MENU (object);

        switch (prop_id)
        {
                case PROP_WINDOW:
                        g_value_set_object (value, m->priv->window);
                        break;
        }
}

static void
ephy_tabs_menu_class_init (EphyTabsMenuClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    G_OBJECT_CLASS (klass)->finalize = ephy_tabs_menu_finalize_impl;
    g_object_class = g_type_class_peek_parent (klass);

    object_class->set_property = ephy_tabs_menu_set_property;
    object_class->get_property = ephy_tabs_menu_get_property;

    g_object_class_install_property (object_class,
                                         PROP_WINDOW,
                                         g_param_spec_object ("EphyWindow",
                                                              "EphyWindow",
                                                              "Parent window",
                                                              EPHY_WINDOW_TYPE,
                                                              G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY));
}

static void
ephy_tabs_menu_init (EphyTabsMenu *menu)
{
    EphyTabsMenuPrivate *p;
    
    p = g_new0 (EphyTabsMenuPrivate, 1);
    
    menu->priv = p;

    menu->priv->ui_id = 0;
    menu->priv->action_group = NULL;
}

static void
ephy_tabs_menu_clean (EphyTabsMenu *menu)
{
    EphyTabsMenuPrivate *p = menu->priv;
    EggMenuMerge *merge = EGG_MENU_MERGE (p->window->ui_merge);

    if (p->ui_id > 0)
    {
        egg_menu_merge_remove_ui (merge, p->ui_id);
        egg_menu_merge_ensure_update (merge);
        p->ui_id = 0;
    }

    if (p->action_group != NULL)
    {
        egg_menu_merge_remove_action_group (merge, p->action_group);
        g_object_unref (p->action_group);
    }
}

static void
ephy_tabs_menu_finalize_impl (GObject *o)
{
    EphyTabsMenu *menu = EPHY_TABS_MENU (o);
    EphyTabsMenuPrivate *p = menu->priv;

    if (p->action_group != NULL)
    {
        egg_menu_merge_remove_action_group
            (EGG_MENU_MERGE (p->window->ui_merge),
             p->action_group);
        g_object_unref (p->action_group);
    }

    g_free (p);

    G_OBJECT_CLASS (g_object_class)->finalize (o);
}


EphyTabsMenu *
ephy_tabs_menu_new (EphyWindow *window)
{
    return EPHY_TABS_MENU (g_object_new (EPHY_TYPE_TABS_MENU,
                         "EphyWindow", window,
                         NULL));
}

/* This code is from EggActionGroup:
 * Ideally either EggAction should support setting an accelerator from
 * a string or EggActionGroup would support adding single EggActionEntry's
 * to an action group.
 */
static void
tab_set_action_accelerator (EggActionGroup *action_group,
                EggAction *action,
                guint tab_number)
{
    char *accel_path = NULL;
    char accel[7];
    gint accel_number;
    guint accel_key;
    GdkModifierType accel_mods;

    /* set the accel path for the menu item */
    accel_path = g_strconcat ("<Actions>/", action_group->name, "/",
                  action->name, NULL);

    /* Only the first ten tabs get accelerators starting from 1 through 0 */
    if (tab_number < 10)
    {
        accel_key = 0;
        accel_number = (tab_number + 1) % 10;

        snprintf (accel, 7, "<alt>%d", accel_number);

        gtk_accelerator_parse (accel, &accel_key, &accel_mods);

        if (accel_key != 0)
        {
            gtk_accel_map_change_entry (accel_path, accel_key,
                            accel_mods, TRUE);
        }
    }

    action->accel_quark = g_quark_from_string (accel_path);
    g_free (accel_path);
}

void
ephy_tabs_menu_update (EphyTabsMenu *menu)
{
    EphyTabsMenuPrivate *p;
    EggMenuMerge *merge;
    EphyTab *tab;
    EggAction *action;
    GString *xml;
    guint i = 0;
    guint num = 0;
    GList *tabs = NULL, *l;
    GError *error = NULL;

    g_return_if_fail (EPHY_IS_TABS_MENU (menu));
    p = menu->priv;
    merge = EGG_MENU_MERGE (p->window->ui_merge);
    
    LOG ("Rebuilding open tabs menu")

    START_PROFILER ("Rebuilding tabs menu")

    ephy_tabs_menu_clean (menu);

    tabs = ephy_window_get_tabs (p->window);

    num = g_list_length (tabs);
    if (num == 0) return;

    p->action_group = egg_action_group_new ("TabsActions");

    /* it's faster to preallocate, MIN is sanity check */
    xml = g_string_sized_new (44 * MIN (num, 64) + 105);

    g_string_append (xml, "<Root><menu><submenu name=\"TabsMenu\">"
                  "<placeholder name=\"TabsOpen\">");

    for (l = tabs; l != NULL; l = l->next)
    {
        tab = (EphyTab *) l->data;
        action = ephy_tab_get_action (tab);

        tab_set_action_accelerator (p->action_group, action, i);

        egg_action_group_add_action (p->action_group, action);

        g_string_append (xml, "<menuitem name=\"");
        g_string_append (xml, action->name);
        g_string_append (xml, "Menu\" verb=\"");
        g_string_append (xml, action->name);
        g_string_append (xml, "\"/>\n");

        ++i;
    }

    g_string_append (xml, "</placeholder></submenu></menu></Root>");

    egg_menu_merge_insert_action_group (merge, p->action_group, 0);
    p->ui_id = egg_menu_merge_add_ui_from_string
                (merge, xml->str, -1, &error);  

    g_string_free (xml, TRUE);

    STOP_PROFILER ("Rebuilding tabs menu")
}