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/*
 *  Copyright (C) 2000, 2001, 2002 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.
 *
 *  $Id$
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif

#include "ephy-shell.h"
#include "ephy-state.h"
#include "ephy-embed-shell.h"
#include "eel-gconf-extensions.h"
#include "ephy-prefs.h"
#include "ephy-favicon-cache.h"
#include "ephy-stock-icons.h"
#include "ephy-window.h"
#include "ephy-file-helpers.h"
#include "ephy-thread-helpers.h"
#include "ephy-bookmarks-import.h"
#include "ephy-bookmarks-editor.h"
#include "ephy-history-window.h"
#include "ephy-debug.h"
#include "ephy-plugin.h"
#include "toolbar.h"
#include "session.h"
#include "downloader-view.h"
#include "ephy-toolbars-model.h"
#include "ephy-autocompletion.h"

#include <string.h>
#include <libgnomeui/gnome-client.h>
#include <bonobo/bonobo-main.h>
#include <bonobo/bonobo-i18n.h>
#include <gtk/gtksignal.h>
#include <gtk/gtkmain.h>
#include <gtk/gtkmessagedialog.h>
#include <dirent.h>

#ifdef ENABLE_NAUTILUS_VIEW

#include <bonobo/bonobo-generic-factory.h>
#include "ephy-nautilus-view.h"

#define EPHY_NAUTILUS_VIEW_OAFIID "OAFIID:GNOME_Epiphany_NautilusViewFactory"

#endif

struct EphyShellPrivate
{
    Session *session;
    EphyAutocompletion *autocompletion;
    EphyBookmarks *bookmarks;
    EphyToolbarsModel *toolbars_model;
    GtkWidget *bme;
    GtkWidget *history_window;
    GList *plugins;
};

static void
ephy_shell_class_init (EphyShellClass *klass);
static void
ephy_shell_init (EphyShell *gs);
static void
ephy_shell_finalize (GObject *object);
static void
ephy_init_services (EphyShell *gs);

#ifdef ENABLE_NAUTILUS_VIEW

static void
ephy_nautilus_view_init_factory (EphyShell *gs);
static BonoboObject *
ephy_nautilus_view_new (BonoboGenericFactory *factory,
              const char *id,
              EphyShell *gs);

#endif

static GObjectClass *parent_class = NULL;

EphyShell *ephy_shell;

GType
ephy_shell_get_type (void)
{
        static GType ephy_shell_type = 0;

        if (ephy_shell_type == 0)
        {
                static const GTypeInfo our_info =
                {
                        sizeof (EphyShellClass),
                        NULL, /* base_init */
                        NULL, /* base_finalize */
                        (GClassInitFunc) ephy_shell_class_init,
                        NULL,
                        NULL, /* class_data */
                        sizeof (EphyShell),
                        0, /* n_preallocs */
                        (GInstanceInitFunc) ephy_shell_init
                };

                ephy_shell_type = g_type_register_static (EPHY_EMBED_SHELL_TYPE,
                              "EphyShell",
                              &our_info, 0);
        }

        return ephy_shell_type;

}

static void
ephy_shell_class_init (EphyShellClass *klass)
{
        GObjectClass *object_class = G_OBJECT_CLASS (klass);

        parent_class = g_type_class_peek_parent (klass);

        object_class->finalize = ephy_shell_finalize;
}

static void
ephy_shell_new_window_cb (EphyEmbedShell *shell,
              EphyEmbed **new_embed,
                          EmbedChromeMask chromemask,
              gpointer data)
{
    EphyTab *new_tab;
        EphyWindow *window;

    g_assert (new_embed != NULL);

    window = ephy_window_new ();
    ephy_window_set_chrome (window, chromemask);

    new_tab = ephy_tab_new ();
    ephy_window_add_tab (window, new_tab, EPHY_NOTEBOOK_INSERT_GROUPED, FALSE);
    *new_embed = ephy_tab_get_embed (new_tab);
}

static void
ephy_shell_load_plugins (EphyShell *es)
{
    DIR *d;
    struct dirent *e;

    d = opendir (PLUGINS_DIR);

    if (d == NULL)
    {
        return;
    }

    while ((e = readdir (d)) != NULL)
    {
        char *plugin;

        plugin = g_strconcat (PLUGINS_DIR"/", e->d_name, NULL);

        if (g_str_has_suffix (plugin, ".so"))
        {
            EphyPlugin *obj;

            obj = ephy_plugin_new (plugin);
            es->priv->plugins = g_list_append
                (es->priv->plugins, obj);
        }

        g_free (plugin);
    }
    closedir (d);
}

static void
ephy_shell_init (EphyShell *gs)
{
    EphyEmbedSingle *single;
    EphyShell **ptr = &ephy_shell;

        gs->priv = g_new0 (EphyShellPrivate, 1);
    gs->priv->session = NULL;
    gs->priv->bookmarks = NULL;
    gs->priv->bme = NULL;
    gs->priv->history_window = NULL;
    gs->priv->toolbars_model = NULL;
    gs->priv->plugins = NULL;

    ephy_shell = gs;
    g_object_add_weak_pointer (G_OBJECT(ephy_shell),
                   (gpointer *)ptr);

    ephy_debug_init ();
    ephy_thread_helpers_init ();
    ephy_file_helpers_init ();
    ephy_stock_icons_init ();
    ephy_ensure_dir_exists (ephy_dot_dir ());

    /* This ensures mozilla is fired up */
    single = ephy_embed_shell_get_embed_single (EPHY_EMBED_SHELL (gs));
    if (single != NULL)
    {
        g_signal_connect (G_OBJECT (single),
                  "new_window_orphan",
                  G_CALLBACK(ephy_shell_new_window_cb),
                  NULL);

        ephy_init_services (gs);
    }
    else
    {
        GtkWidget *dialog;

        dialog = gtk_message_dialog_new
            (NULL,
                         GTK_DIALOG_MODAL,
                         GTK_MESSAGE_ERROR,
                         GTK_BUTTONS_CLOSE,
                         _("Epiphany can't be used now. "
                         "Mozilla initialization failed. Check your "
                         "MOZILLA_FIVE_HOME environmental variable."));
        gtk_dialog_run (GTK_DIALOG (dialog));

        exit (0);
    }

    ephy_shell_load_plugins (gs);
}

static void
ephy_shell_finalize (GObject *object)
{
        EphyShell *gs;

        g_return_if_fail (object != NULL);
        g_return_if_fail (IS_EPHY_SHELL (object));

    gs = EPHY_SHELL (object);

        g_return_if_fail (gs->priv != NULL);

    g_assert (ephy_shell == NULL);

    g_list_foreach (gs->priv->plugins, (GFunc)g_type_module_unuse, NULL);
    g_list_free (gs->priv->plugins);

    LOG ("Unref toolbars model")
    if (gs->priv->toolbars_model)
    {
        g_object_unref (G_OBJECT (gs->priv->toolbars_model));
    }

    LOG ("Unref session")
    if (gs->priv->session)
    {
        g_return_if_fail (IS_SESSION(gs->priv->session));
        g_object_remove_weak_pointer
            (G_OBJECT(gs->priv->session),
                         (gpointer *)&gs->priv->session);
        g_object_unref (G_OBJECT (gs->priv->session));
    }

    LOG ("Unref autocompletion")
    if (gs->priv->autocompletion)
    {
        g_object_unref (gs->priv->autocompletion);
    }

    LOG ("Unref Bookmarks Editor");
    if (gs->priv->bme)
    {
        gtk_widget_destroy (GTK_WIDGET (gs->priv->bme));
    }

    LOG ("Unref History Window");
    if (gs->priv->history_window)
    {
        gtk_widget_destroy (GTK_WIDGET (gs->priv->history_window));
    }

    LOG ("Unref bookmarks")
    if (gs->priv->bookmarks)
    {
        g_object_unref (gs->priv->bookmarks);
    }

        G_OBJECT_CLASS (parent_class)->finalize (object);

        g_free (gs->priv);

    ephy_state_save ();
    ephy_file_helpers_shutdown ();

    LOG ("Ephy shell finalized")

    bonobo_main_quit ();

    LOG ("Bonobo quit done")
}

EphyShell *
ephy_shell_new (void)
{
    return EPHY_SHELL (g_object_new (EPHY_SHELL_TYPE, NULL));
}

static void
ephy_init_services (EphyShell *gs)
{
    /* preload the prefs */
    /* it also enables notifiers support */
    eel_gconf_monitor_add ("/apps/epiphany");
    eel_gconf_monitor_add ("/system/proxy");

#ifdef ENABLE_NAUTILUS_VIEW

    ephy_nautilus_view_init_factory (gs);

#endif

}

static void
load_homepage (EphyEmbed *embed)
{
    char *home;

    home = eel_gconf_get_string(CONF_GENERAL_HOMEPAGE);

    if (home == NULL || home[0] == '\0')
    {
        g_free (home);

        home = g_strdup ("about:blank");
    }

    ephy_embed_load_url (embed, home);

    g_free (home);
}

/**
 * ephy_shell_get_active_window:
 * @gs: a #EphyShell
 *
 * Get the current active window. Use it when you
 * need to take an action (like opening an url) on
 * a window but you dont have a target window.
 * Ex. open a new tab from command line.
 *
 * Return value: the current active window
 **/
EphyWindow *
ephy_shell_get_active_window (EphyShell *gs)
{
    Session *session;
    const GList *windows;

    session = SESSION (ephy_shell_get_session (gs));
    windows = session_get_windows (session);

    if (windows == NULL) return NULL;

    return EPHY_WINDOW(windows->data);
}

/**
 * ephy_shell_new_tab:
 * @shell: a #EphyShell
 * @parent_window: the target #EphyWindow or %NULL
 * @previous_tab: the referrer tab or %NULL
 * @url: an url to load or %NULL
 *
 * Create a new tab and the parent window when necessary.
 * Ever use this function to open urls in new window/tabs.
 *
 * ReturnValue: the created #EphyTab
 **/
EphyTab *
ephy_shell_new_tab (EphyShell *shell,
            EphyWindow *parent_window,
            EphyTab *previous_tab,
            const char *url,
            EphyNewTabFlags flags)
{
    EphyWindow *window;
    EphyTab *tab;
    EphyEmbed *embed;
    gboolean in_new_window;
    gboolean grouped;
    gboolean jump_to;
    EphyEmbed *previous_embed = NULL;
    GtkWidget *nb;
    gint position;
    Toolbar *toolbar;

    in_new_window = !eel_gconf_get_boolean (CONF_TABS_TABBED);

    if (flags & EPHY_NEW_TAB_IN_NEW_WINDOW) in_new_window = TRUE;
    if (flags & EPHY_NEW_TAB_IN_EXISTING_WINDOW) in_new_window = FALSE;

    jump_to = (flags & EPHY_NEW_TAB_JUMP);

    if (!in_new_window && parent_window != NULL)
    {
        window = parent_window;
    }
    else
    {
        window = ephy_window_new ();
    }

    toolbar = ephy_window_get_toolbar (window);

    if (previous_tab)
    {
        previous_embed = ephy_tab_get_embed (previous_tab);
    }

    grouped = ((flags & EPHY_NEW_TAB_OPEN_PAGE ||
                flags & EPHY_NEW_TAB_APPEND_GROUPED ||
            flags & EPHY_NEW_TAB_CLONE_PAGE)) &&
          !(flags & EPHY_NEW_TAB_APPEND_LAST);

    if ((flags & EPHY_NEW_TAB_APPEND_AFTER) && previous_embed != NULL)
    {
        nb = ephy_window_get_notebook (window);
        position = gtk_notebook_page_num (GTK_NOTEBOOK (nb),
                          GTK_WIDGET (previous_embed)) + 1;
    }
    else
    {
        position = grouped ? EPHY_NOTEBOOK_INSERT_GROUPED : EPHY_NOTEBOOK_INSERT_LAST;
    }

    tab = ephy_tab_new ();
    embed = ephy_tab_get_embed (tab);
    gtk_widget_show (GTK_WIDGET(embed));
    ephy_window_add_tab (window, tab,
                 position,
                 jump_to);
    gtk_widget_show (GTK_WIDGET(window));

    if (flags & EPHY_NEW_TAB_HOME_PAGE ||
        flags & EPHY_NEW_TAB_NEW_PAGE)
    {
        ephy_tab_set_location (tab, "", TAB_ADDRESS_EXPIRE_NEXT);
        toolbar_activate_location (toolbar);
        load_homepage (embed);
    }
    else if (flags & EPHY_NEW_TAB_OPEN_PAGE)
    {
        g_assert (url != NULL);
        ephy_embed_load_url (embed, url);
    }
    else if (flags & EPHY_NEW_TAB_CLONE_PAGE)
    {
        EmbedDisplayType display_type;

                display_type = (flags & EPHY_NEW_TAB_SOURCE_MODE) ?
                                DISPLAY_AS_SOURCE : DISPLAY_NORMAL;

        ephy_embed_load_url (embed, "about:blank");
        ephy_embed_copy_page (embed, previous_embed, display_type);
    }

    if (flags & EPHY_NEW_TAB_FULLSCREEN_MODE)
    {
        gtk_window_fullscreen (GTK_WINDOW (window));
    }

        return tab;
}

#ifdef ENABLE_NAUTILUS_VIEW

static void
ephy_nautilus_view_init_factory (EphyShell *gs)
{
    BonoboGenericFactory *ephy_nautilusview_factory;
    ephy_nautilusview_factory = bonobo_generic_factory_new
        (EPHY_NAUTILUS_VIEW_OAFIID,
         (BonoboFactoryCallback) ephy_nautilus_view_new, gs);
    if (!BONOBO_IS_GENERIC_FACTORY (ephy_nautilusview_factory))
        g_warning ("Couldn't create the factory!");

}

static BonoboObject *
ephy_nautilus_view_new (BonoboGenericFactory *factory, const char *id,
              EphyShell *gs)
{
    return ephy_nautilus_view_new_component (gs);
}

#endif

/**
 * ephy_shell_get_session:
 * @gs: a #EphyShell
 *
 * Returns current session.
 *
 * Return value: the current session.
 **/
GObject *
ephy_shell_get_session (EphyShell *gs)
{
    if (!gs->priv->session)
    {
        gs->priv->session = session_new ();
        g_object_add_weak_pointer
            (G_OBJECT(gs->priv->session),
                         (gpointer *)&gs->priv->session);
    }

    return G_OBJECT (gs->priv->session);
}

GObject *
ephy_shell_get_autocompletion (EphyShell *gs)
{
    EphyShellPrivate *p = gs->priv;

    if (!p->autocompletion)
    {
        static const gchar *prefixes[] = {
            EPHY_AUTOCOMPLETION_USUAL_WEB_PREFIXES,
            NULL
        };

        EphyHistory *gh = ephy_embed_shell_get_global_history (EPHY_EMBED_SHELL (gs));
        EphyBookmarks *bmk = ephy_shell_get_bookmarks (gs);
        p->autocompletion = ephy_autocompletion_new ();
        ephy_autocompletion_set_prefixes (p->autocompletion, prefixes);

        ephy_autocompletion_add_source (p->autocompletion,
                        EPHY_AUTOCOMPLETION_SOURCE (gh));
        ephy_autocompletion_add_source (p->autocompletion,
                        EPHY_AUTOCOMPLETION_SOURCE (bmk));
    }
    return G_OBJECT (p->autocompletion);
}

EphyBookmarks *
ephy_shell_get_bookmarks (EphyShell *gs)
{
    if (gs->priv->bookmarks == NULL)
    {
        gs->priv->bookmarks = ephy_bookmarks_new ();
    }

    return gs->priv->bookmarks;
}

GObject *
ephy_shell_get_toolbars_model (EphyShell *gs)
{
    if (gs->priv->toolbars_model == NULL)
    {
        EphyBookmarks *bookmarks;

        bookmarks = ephy_shell_get_bookmarks (gs);

        gs->priv->toolbars_model = ephy_toolbars_model_new (bookmarks);

        g_object_set (bookmarks, "toolbars_model",
                  gs->priv->toolbars_model, NULL);
    }

    return G_OBJECT (gs->priv->toolbars_model);
}

static void
bookmarks_hide_cb (GtkWidget *widget, gpointer data)
{
    LOG ("Unref shell for bookmarks editor")
    g_object_unref (ephy_shell);
}

void
ephy_shell_show_bookmarks_editor (EphyShell *gs,
                  GtkWidget *parent)
{
    EphyBookmarks *bookmarks;

    if (gs->priv->bme == NULL)
    {
        bookmarks = ephy_shell_get_bookmarks (ephy_shell);
        g_assert (bookmarks != NULL);
        gs->priv->bme = ephy_bookmarks_editor_new (bookmarks);
        g_signal_connect (gs->priv->bme, "hide", 
                  G_CALLBACK (bookmarks_hide_cb), NULL);
    }

    if (!GTK_WIDGET_VISIBLE (gs->priv->bme))
    {
        LOG ("Ref shell for bookmarks editor")
        g_object_ref (ephy_shell);
    }

    if (parent)
    {
        ephy_bookmarks_editor_set_parent
            (EPHY_BOOKMARKS_EDITOR (gs->priv->bme), parent);
    }

    gtk_window_present (GTK_WINDOW (gs->priv->bme));
}

static void
history_window_hide_cb (GtkWidget *widget, gpointer data)
{
    LOG ("Unref shell for history window")
    g_object_unref (ephy_shell);
}

void
ephy_shell_show_history_window (EphyShell *gs,
                GtkWidget *parent)
{
    EphyHistory *history;

    if (gs->priv->history_window == NULL)
    {
        history = ephy_embed_shell_get_global_history
            (EPHY_EMBED_SHELL (ephy_shell));
        g_assert (history != NULL);
        gs->priv->history_window = ephy_history_window_new (history);
        g_signal_connect (gs->priv->history_window, "hide",
                  G_CALLBACK (history_window_hide_cb), NULL);
    }

    if (!GTK_WIDGET_VISIBLE (gs->priv->history_window))
    {
        LOG ("Ref shell for history window")
        g_object_ref (ephy_shell);
    }

    if (parent)
    {
        ephy_history_window_set_parent
            (EPHY_HISTORY_WINDOW (gs->priv->history_window), parent);
    }

    gtk_window_present (GTK_WINDOW (gs->priv->history_window));
}