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/*
 *  Copyright (C) 2000 Marco Pesenti Gritti
 *  Copyright (C) 2001, 2002 Jorn Baayen
 *
 *  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.
 *
 *  $Id$
 */

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

#include "toolbar.h"
#include "ephy-file-helpers.h"
#include "ephy-shell.h"
#include "ephy-location-entry.h"
#include "ephy-dnd.h"
#include "ephy-spinner.h"
#include "ephy-location-action.h"
#include "ephy-favicon-action.h"
#include "ephy-topic-action.h"
#include "ephy-go-action.h"
#include "ephy-navigation-action.h"
#include "ephy-bookmark-action.h"
#include "ephy-zoom-action.h"
#include "window-commands.h"
#include "ephy-string.h"
#include "ephy-debug.h"
#include "ephy-new-bookmark.h"
#include "ephy-stock-icons.h"
#include "ephy-toolbars-model.h"
#include "eel-gconf-extensions.h"

#include <string.h>
#include <glib/gi18n.h>
#include <gtk/gtkuimanager.h>
#include <gtk/gtktoolbar.h>

static void toolbar_class_init (ToolbarClass *klass);
static void toolbar_init (Toolbar *t);
static void toolbar_finalize (GObject *object);
static void toolbar_set_window (Toolbar *t, EphyWindow *window);
static void
toolbar_set_property (GObject *object,
                      guint prop_id,
                      const GValue *value,
                      GParamSpec *pspec);
static void
toolbar_get_property (GObject *object,
                      guint prop_id,
                      GValue *value,
                      GParamSpec *pspec);

static GtkTargetEntry drag_targets[] = {
  { EGG_TOOLBAR_ITEM_TYPE, 0, 0 },
  { EPHY_DND_TOPIC_TYPE, 0, 1 },
  { EPHY_DND_URL_TYPE, 0, 2 },
};
static int n_drag_targets = G_N_ELEMENTS (drag_targets);

enum
{
    PROP_0,
    PROP_EPHY_WINDOW
};

static GObjectClass *parent_class = NULL;

#define CONF_LOCKDOWN_DISABLE_ARBITRARY_URL  "/apps/epiphany/lockdown/disable_arbitrary_url"

#define EPHY_TOOLBAR_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EPHY_TYPE_TOOLBAR, ToolbarPrivate))

struct ToolbarPrivate
{
    EphyWindow *window;
    GtkUIManager *ui_merge;
    GtkActionGroup *action_group;
    gboolean visibility;
    gboolean updating_address;
    GtkWidget *spinner;
    GtkWidget *favicon;
    GtkWidget *go;
    guint disable_arbitrary_url_notifier_id;
};

GType
toolbar_get_type (void)
{
        static GType toolbar_type = 0;

        if (toolbar_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (ToolbarClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) toolbar_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (Toolbar),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) toolbar_init
                };

                toolbar_type = g_type_register_static (EGG_TYPE_EDITABLE_TOOLBAR,
                               "Toolbar",
                               &our_info, 0);
        }

        return toolbar_type;

}

static void
update_location_editable (Toolbar *t)
{
    GtkActionGroup *action_group;
    GtkAction *action;
    gboolean editable;

    editable = !eel_gconf_get_boolean (CONF_LOCKDOWN_DISABLE_ARBITRARY_URL);

    /* Restore the real web page address when disabling entry */
    if (!editable)
    {
        EphyEmbed *embed;
        char *address;

        embed = ephy_window_get_active_embed (t->priv->window);
        address = ephy_embed_get_location (embed, TRUE);
        toolbar_set_location (t, address);
        g_free (address);
    }

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Location");
    g_object_set (G_OBJECT (action), "editable", editable, NULL);
}

static void
arbitrary_url_notifier (GConfClient *client,
                guint cnxn_id,
                GConfEntry *entry,
                Toolbar *t)
{
    update_location_editable (t);
}

static void
go_location_cb (GtkAction *action, char *location, EphyWindow *window)
{
    ephy_window_load_url (window, location);
}

static void
zoom_to_level_cb (GtkAction *action, float zoom, EphyWindow *window)
{
    ephy_window_set_zoom (window, zoom);
}

static void
bookmark_destroy_cb (EphyNode *node,
             Toolbar *t)
{
    GtkAction *action;
    char *name;
    EphyToolbarsModel *model;
    long id;

    model = EPHY_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, FALSE));

    id = ephy_node_get_id (node);
    name = ephy_toolbars_model_get_action_name (model, id);
    action = gtk_action_group_get_action (t->priv->action_group, name);
    if (action)
    {
        gtk_action_group_remove_action (t->priv->action_group, action);
    }

    g_free (name);
}

static void
toolbar_ensure_action (Toolbar *t,
               const char *name)
{
    GtkAction *action = NULL;
    EphyToolbarsModel *model;
    EphyBookmarks *bookmarks;
    EphyNode *bmks, *topics;

    model = EPHY_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, FALSE));
    bookmarks = ephy_shell_get_bookmarks (ephy_shell);
    bmks = ephy_bookmarks_get_bookmarks (bookmarks);
    topics = ephy_bookmarks_get_keywords (bookmarks);

    LOG ("Ensure action %s", name)

    if (g_str_has_prefix (name, "GoBookmark-"))
    {
        EphyNode *node;

        node = ephy_toolbars_model_get_node (model,name);
        g_return_if_fail (node != NULL);

        if (ephy_node_has_child (topics, node))
        {
            action = ephy_topic_action_new (name, ephy_node_get_id (node));
        }
        else if (ephy_node_has_child (bmks, node))
        {
            action = ephy_bookmark_action_new (name, ephy_node_get_id (node));
        }

        g_return_if_fail (action != NULL);

        g_signal_connect (action, "go_location",
                  G_CALLBACK (go_location_cb), t->priv->window);
        gtk_action_group_add_action (t->priv->action_group, action);
        g_object_unref (action);

        ephy_node_signal_connect_object (node,
                             EPHY_NODE_DESTROY,
                             (EphyNodeCallback) bookmark_destroy_cb,
                             G_OBJECT (t));
    }
}

static void
toolbar_class_init (ToolbarClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = toolbar_finalize;
    object_class->set_property = toolbar_set_property;
    object_class->get_property = toolbar_get_property;

    g_object_class_install_property (object_class,
                                         PROP_EPHY_WINDOW,
                                         g_param_spec_object ("window",
                                                              "Window",
                                                              "Parent window",
                                  EPHY_TYPE_WINDOW,
                                  G_PARAM_READWRITE |
                                  G_PARAM_CONSTRUCT_ONLY));

    g_type_class_add_private (object_class, sizeof(ToolbarPrivate));
}

static void
toolbar_set_property (GObject *object,
                      guint prop_id,
                      const GValue *value,
                      GParamSpec *pspec)
{
        Toolbar *t = EPHY_TOOLBAR (object);

        switch (prop_id)
        {
        case PROP_EPHY_WINDOW:
            toolbar_set_window (t, g_value_get_object (value));
            break;
        }
}

static void
toolbar_get_property (GObject *object,
                      guint prop_id,
                      GValue *value,
                      GParamSpec *pspec)
{
        Toolbar *t = EPHY_TOOLBAR (object);

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

static void
sync_user_input_cb (EphyLocationAction *action, GParamSpec *pspec, Toolbar *t)
{
    EphyTab *tab;
    const char *address;

    LOG ("sync_user_input_cb")

    if (t->priv->updating_address) return;

    tab = ephy_window_get_active_tab (t->priv->window);
    g_return_if_fail (EPHY_IS_TAB (tab));

    address = ephy_location_action_get_address (action);

    t->priv->updating_address = TRUE;
    ephy_tab_set_location (tab, address, TAB_ADDRESS_EXPIRE_CURRENT);
    t->priv->updating_address = FALSE;
}

static void
toolbar_setup_actions (Toolbar *t)
{
    GtkAction *action;

    t->priv->action_group = gtk_action_group_new ("SpecialToolbarActions");

    action = g_object_new (EPHY_TYPE_NAVIGATION_ACTION,
                   "name", "NavigationBack",
                   "label", _("Back"),
                   "stock_id", GTK_STOCK_GO_BACK,
                   "tooltip", _("Go back"),
                   "window", t->priv->window,
                   "direction", EPHY_NAVIGATION_DIRECTION_BACK,
                   "is_important", TRUE,
                   NULL);
    g_signal_connect (action, "activate",
              G_CALLBACK (window_cmd_go_back), t->priv->window);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);

    action = g_object_new (EPHY_TYPE_NAVIGATION_ACTION,
                   "name", "NavigationForward",
                   "label", _("Forward"),
                   "stock_id", GTK_STOCK_GO_FORWARD,
                   "tooltip", _("Go forward"),
                   "window", t->priv->window,
                   "direction", EPHY_NAVIGATION_DIRECTION_FORWARD,
                   NULL);
    g_signal_connect (action, "activate",
              G_CALLBACK (window_cmd_go_forward), t->priv->window);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);

    action = g_object_new (EPHY_TYPE_NAVIGATION_ACTION,
                   "name", "NavigationUp",
                   "label", _("Up"),
                   "stock_id", GTK_STOCK_GO_UP,
                   "tooltip", _("Go up"),
                   "window", t->priv->window,
                   "direction", EPHY_NAVIGATION_DIRECTION_UP,
                   NULL);
    g_signal_connect (action, "activate",
              G_CALLBACK (window_cmd_go_up), t->priv->window);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);

    /* FIXME: I'm still waiting for the exact term to 
     * user here from the docs team.
     */
    action = g_object_new (EPHY_TYPE_LOCATION_ACTION,
                   "name", "Location",
                   "label", _("Address Entry"),
                   "stock_id", EPHY_STOCK_ENTRY,
                   "tooltip", _("Enter a web address to open, or a phrase to search for on the web"),
                   NULL);
    g_signal_connect (action, "go_location",
              G_CALLBACK (go_location_cb), t->priv->window);
    g_signal_connect (action, "notify::address",
              G_CALLBACK (sync_user_input_cb), t);
    gtk_action_group_add_action (t->priv->action_group, action);
    update_location_editable (t);
    g_object_unref (action);

    action = g_object_new (EPHY_TYPE_ZOOM_ACTION,
                   "name", "Zoom",
                   "label", _("Zoom"),
                   "stock_id", GTK_STOCK_ZOOM_IN,
                   "tooltip", _("Adjust the text size"),
                   "zoom", 1.0,
                   NULL);
    g_signal_connect (action, "zoom_to_level",
              G_CALLBACK (zoom_to_level_cb), t->priv->window);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);

    action = g_object_new (EPHY_TYPE_FAVICON_ACTION,
                   "name", "Favicon",
                   "label", _("Favicon"),
                   "window", t->priv->window,
                   NULL);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);

    action = g_object_new (EPHY_TYPE_GO_ACTION,
                   "name", "ToolbarGo",
                   "label", _("Go"),
                   "stock_id", GTK_STOCK_JUMP_TO,
                   "tooltip", _("Go to the address entered in the address entry"),
                   NULL);
    g_signal_connect (action, "activate",
              G_CALLBACK (window_cmd_load_location), t->priv->window);
    gtk_action_group_add_action (t->priv->action_group, action);
    g_object_unref (action);
}

static void
action_request_cb (EggEditableToolbar *etoolbar,
           char *action_name,
           gpointer data)
{
    toolbar_ensure_action (EPHY_TOOLBAR (etoolbar), action_name);
}

static void
init_bookmarks_toolbar (Toolbar *t)
{
    EphyToolbarsModel *model;
    int i, n_toolbars;

    model = EPHY_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, FALSE));
    n_toolbars = egg_toolbars_model_n_toolbars
        (EGG_TOOLBARS_MODEL (model));

    for (i = 0; i < n_toolbars; i++)
    {
        const char *t_name;

        t_name = egg_toolbars_model_toolbar_nth
            (EGG_TOOLBARS_MODEL (model), i);
        g_return_if_fail (t_name != NULL);

        if (strcmp (t_name, "BookmarksBar") == 0)
        {
            egg_editable_toolbar_set_drag_dest
                (EGG_EDITABLE_TOOLBAR (t),
                 drag_targets, n_drag_targets,
                 t_name);
            egg_toolbars_model_set_flags
                (EGG_TOOLBARS_MODEL (model),
                 EGG_TB_MODEL_NOT_REMOVABLE, i);
        }
    }
}

static void
init_normal_mode (Toolbar *t)
{
    EphyToolbarsModel *model;

    model = EPHY_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, FALSE));

    g_object_set (G_OBJECT (t),
              "ToolbarsModel", model,
              NULL);
    init_bookmarks_toolbar (t);
}

static void
init_fullscreen_mode (Toolbar *t)
{
    EggToolbarsModel *model;
    
    model = EGG_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, TRUE));

    g_object_set (G_OBJECT (t),
              "ToolbarsModel", model,
              NULL);
}

static gboolean
window_state_event_cb (GtkWidget *widget, GdkEventWindowState *event, Toolbar *t)
{
    if (event->changed_mask & GDK_WINDOW_STATE_FULLSCREEN)
    {
        gboolean fullscreen;

        fullscreen = event->new_window_state & GDK_WINDOW_STATE_FULLSCREEN;
        if (fullscreen)
        {
            init_fullscreen_mode (t);
        }
        else
        {
            init_normal_mode (t);
        }
    }

    return FALSE;
}

static void
toolbar_set_window (Toolbar *t, EphyWindow *window)
{
    g_return_if_fail (t->priv->window == NULL);

    t->priv->window = window;
    t->priv->ui_merge = GTK_UI_MANAGER (window->ui_merge);

    toolbar_setup_actions (t);
    gtk_ui_manager_insert_action_group (t->priv->ui_merge,
                        t->priv->action_group, 1);
    g_signal_connect (t, "action_request",
              G_CALLBACK (action_request_cb),
              NULL);
    g_signal_connect_object (window, "window-state-event",
                     G_CALLBACK (window_state_event_cb),
                     t, 0);

    t->priv->disable_arbitrary_url_notifier_id = eel_gconf_notification_add
        (CONF_LOCKDOWN_DISABLE_ARBITRARY_URL,
         (GConfClientNotifyFunc)arbitrary_url_notifier, t);

    g_object_set (G_OBJECT (t),
              "MenuMerge", t->priv->ui_merge,
              NULL);

    init_normal_mode (t);
}

static void
toolbar_style_sync (GtkToolbar *toolbar,
            GtkToolbarStyle style,
            GtkWidget *spinner)
{
    gboolean small;

    small = (style != GTK_TOOLBAR_BOTH);

    ephy_spinner_set_small_mode (EPHY_SPINNER (spinner), small);
}

static void
create_spinner (Toolbar *t)
{
    GtkWidget *spinner;
    GtkToolbar *toolbar;

    spinner = ephy_spinner_new ();
    gtk_widget_show (spinner);
    t->priv->spinner = spinner;

    toolbar = egg_editable_toolbar_set_fixed
        (EGG_EDITABLE_TOOLBAR (t), spinner);

    g_signal_connect (toolbar, "style_changed",
              G_CALLBACK (toolbar_style_sync),
              spinner);
}

static void
toolbar_init (Toolbar *t)
{
    t->priv = EPHY_TOOLBAR_GET_PRIVATE (t);

    t->priv->window = NULL;
    t->priv->ui_merge = NULL;
    t->priv->visibility = TRUE;
    t->priv->updating_address = FALSE;

    create_spinner (t);
}

static void
toolbar_finalize (GObject *object)
{
    Toolbar *t = EPHY_TOOLBAR (object);

    eel_gconf_notification_remove
        (t->priv->disable_arbitrary_url_notifier_id);

    g_object_unref (t->priv->action_group);

    G_OBJECT_CLASS (parent_class)->finalize (object);

    LOG ("Toolbar finalized")
}

Toolbar *
toolbar_new (EphyWindow *window)
{
    return EPHY_TOOLBAR (g_object_new (EPHY_TYPE_TOOLBAR,
                       "window", window,
                       NULL));
}

void
toolbar_activate_location (Toolbar *t)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Location");

    gtk_action_activate (action);
}

void
toolbar_spinner_start (Toolbar *t)
{
    ephy_spinner_start (EPHY_SPINNER (t->priv->spinner));
}

void
toolbar_spinner_stop (Toolbar *t)
{
    ephy_spinner_stop (EPHY_SPINNER (t->priv->spinner));
}

void
toolbar_set_location (Toolbar *t,
              const char *address)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    LOG ("toolbar set location %s", address)
    LOG ("updating is %d", t->priv->updating_address)

    if (t->priv->updating_address) return;

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Location");

    t->priv->updating_address = TRUE;
    ephy_location_action_set_address (EPHY_LOCATION_ACTION (action), address);
    t->priv->updating_address = FALSE;
}

void
toolbar_update_favicon (Toolbar *t)
{
    EphyTab *tab;
    const char *url;
    GtkActionGroup *action_group;
    GtkAction *action;

    tab = ephy_window_get_active_tab (t->priv->window);
    url = ephy_tab_get_icon_address (tab);
    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Favicon");
    g_object_set (action, "icon", url, NULL);
}

const char *
toolbar_get_location (Toolbar *t)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Location");

    return ephy_location_action_get_address (EPHY_LOCATION_ACTION (action));
}

void
toolbar_update_navigation_actions (Toolbar *t, gboolean back, gboolean forward, gboolean up)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "NavigationBack");
    g_object_set (action, "sensitive", back, NULL);
    action = gtk_action_group_get_action (action_group, "NavigationForward");
    g_object_set (action, "sensitive", forward, NULL);
    action = gtk_action_group_get_action (action_group, "NavigationUp");
    g_object_set (action, "sensitive", up, NULL);
}

void
toolbar_set_visibility (Toolbar *t,
            gboolean normal_toolbars,
            gboolean bmk_toolbars)
{
    EphyToolbarsModel *model;
    int i, n_toolbars;

    model = EPHY_TOOLBARS_MODEL
        (ephy_shell_get_toolbars_model (ephy_shell, FALSE));
    n_toolbars = egg_toolbars_model_n_toolbars
        (EGG_TOOLBARS_MODEL (model));

    for (i = 0; i < n_toolbars; i++)
    {
        const char *t_name;

        t_name = egg_toolbars_model_toolbar_nth
            (EGG_TOOLBARS_MODEL (model), i);
        g_return_if_fail (t_name != NULL);
        if (strcmp (t_name, "BookmarksBar") == 0)
        {
            if (bmk_toolbars)
            {
                egg_editable_toolbar_show
                    (EGG_EDITABLE_TOOLBAR (t), t_name);
            }
            else
            {
                egg_editable_toolbar_hide
                    (EGG_EDITABLE_TOOLBAR (t), t_name);
            }
        }
        else
        {
            if (normal_toolbars)
            {
                egg_editable_toolbar_show
                    (EGG_EDITABLE_TOOLBAR (t), t_name);
            }
            else
            {
                egg_editable_toolbar_hide
                    (EGG_EDITABLE_TOOLBAR (t), t_name);
            }
        }
    }
}

void
toolbar_update_zoom (Toolbar *t, float zoom)
{
    GtkActionGroup *action_group;
    GtkAction *action;

    action_group = t->priv->action_group;
    action = gtk_action_group_get_action (action_group, "Zoom");
    g_object_set (action, "zoom", zoom, NULL);
}