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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 *  Copyright © 2005 Peter Harvey
 *  Copyright © 2006 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "config.h"
#include "ephy-bookmarks-ui.h"

#include "ephy-bookmark-action-group.h"
#include "ephy-bookmark-action.h"
#include "ephy-bookmark-properties.h"
#include "ephy-bookmarks-menu.h"
#include "ephy-bookmarks.h"
#include "ephy-debug.h"
#include "ephy-dnd.h"
#include "ephy-embed-shell.h"
#include "ephy-file-helpers.h"
#include "ephy-gui.h"
#include "ephy-link.h"
#include "ephy-node-common.h"
#include "ephy-open-tabs-action.h"
#include "ephy-prefs.h"
#include "ephy-settings.h"
#include "ephy-shell.h"
#include "ephy-string.h"
#include "ephy-topic-action-group.h"
#include "ephy-topic-action.h"

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

#define BM_WINDOW_DATA_KEY "bookmarks-window-data"

typedef struct
{
    guint bookmarks_menu;
    guint toolbar_menu;
} BookmarksWindowData;

enum
{
    RESPONSE_SHOW_PROPERTIES = 1,
    RESPONSE_NEW_BOOKMARK = 2
};

static GString * bookmarks_menu_string = 0;
static GHashTable *properties_dialogs = 0;

static GtkAction *
find_action (GtkUIManager *manager, const char *name)
{
    GList *l = gtk_ui_manager_get_action_groups (manager);
    GtkAction *action;
    
    while (l != NULL)
    {
        action = gtk_action_group_get_action (GTK_ACTION_GROUP (l->data), name);
        if (action) return action;
        l = l->next;
    }

    return NULL;
}

static void
activate_bookmarks_menu (GtkAction *action, EphyWindow *window)
{
    BookmarksWindowData *data = g_object_get_data (G_OBJECT (window), BM_WINDOW_DATA_KEY);
    if (data && !data->bookmarks_menu)
    {
        GtkUIManager *manager = ephy_window_get_ui_manager (window);
        gtk_ui_manager_ensure_update (manager);

        if (!bookmarks_menu_string->len)
        {
            g_string_append (bookmarks_menu_string,
                     "<ui><popup name=\"PagePopup\" action=\"PagePopupAction\"><menu name=\"BookmarksMenu\" action=\"Bookmarks\">");
            ephy_bookmarks_menu_build (bookmarks_menu_string, 0);
            g_string_append (bookmarks_menu_string, "</menu></popup></ui>");
        }

        data->bookmarks_menu = gtk_ui_manager_add_ui_from_string
          (manager, bookmarks_menu_string->str, bookmarks_menu_string->len, 0);
        
        gtk_ui_manager_ensure_update (manager);
    }
}

static void
erase_bookmarks_menu (EphyWindow *window)
{
    BookmarksWindowData *data;
    GtkUIManager *manager;

    manager = ephy_window_get_ui_manager (window);
    data = g_object_get_data (G_OBJECT (window), BM_WINDOW_DATA_KEY);

    if (data != NULL && data->bookmarks_menu != 0)
    {
        gtk_ui_manager_remove_ui (manager, data->bookmarks_menu);
        data->bookmarks_menu = 0;
    }

    g_string_truncate (bookmarks_menu_string, 0);
}

static void
tree_changed_cb (EphyBookmarks *bookmarks,
         EphyWindow *window)
{
    erase_bookmarks_menu (window);
}

static void
node_added_cb (EphyNode *parent,
           EphyNode *child,
           EphyWindow *window)
{
    erase_bookmarks_menu (window);
}

static void
node_changed_cb (EphyNode *parent,
         EphyNode *child,
         guint property_id,
         EphyWindow *window)
{
    if (property_id == EPHY_NODE_KEYWORD_PROP_NAME ||
        property_id == EPHY_NODE_BMK_PROP_TITLE)
    {
        erase_bookmarks_menu (window);
    }
}

static void
node_removed_cb (EphyNode *parent,
         EphyNode *child,
         guint index,
         EphyWindow *window)
{
    erase_bookmarks_menu (window);
}

void
ephy_bookmarks_ui_attach_window (EphyWindow *window)
{
    EphyBookmarks *eb;
    EphyNode *bookmarks;
    EphyNode *topics;
    BookmarksWindowData *data;
    GtkUIManager *manager;
    GtkActionGroup *actions;
    GtkAction *action;

    eb = ephy_shell_get_bookmarks (ephy_shell);
    bookmarks = ephy_bookmarks_get_bookmarks (eb);
    topics = ephy_bookmarks_get_keywords (eb);
    data = g_object_get_data (G_OBJECT (window), BM_WINDOW_DATA_KEY);
    g_return_if_fail (data == NULL);

    manager = ephy_window_get_ui_manager (window);

    data = g_new0 (BookmarksWindowData, 1);
    g_object_set_data_full (G_OBJECT (window), BM_WINDOW_DATA_KEY, data, g_free);

    /* Create the self-maintaining action groups for bookmarks and topics */
    actions = ephy_bookmark_group_new (bookmarks);
    gtk_ui_manager_insert_action_group (manager, actions, -1);
    g_signal_connect_object (actions, "open-link",
                 G_CALLBACK (ephy_link_open), G_OBJECT (window),
                 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
    g_object_unref (actions);
    
    actions = ephy_topic_action_group_new (topics, manager);
    gtk_ui_manager_insert_action_group (manager, actions, -1);
    g_object_unref (actions);

    actions = ephy_open_tabs_group_new (topics);
    gtk_ui_manager_insert_action_group (manager, actions, -1);
    g_signal_connect_object (actions, "open-link",
                 G_CALLBACK (ephy_link_open), G_OBJECT (window),
                 G_CONNECT_SWAPPED | G_CONNECT_AFTER);
    g_object_unref (actions);
    
    /* Add signal handlers for the bookmark database */
    ephy_node_signal_connect_object (bookmarks, EPHY_NODE_CHILD_ADDED,
                     (EphyNodeCallback)node_added_cb,
                     G_OBJECT (window));
    ephy_node_signal_connect_object (topics, EPHY_NODE_CHILD_ADDED,
                     (EphyNodeCallback)node_added_cb,
                     G_OBJECT (window));

    ephy_node_signal_connect_object (bookmarks, EPHY_NODE_CHILD_REMOVED,
                     (EphyNodeCallback)node_removed_cb,
                     G_OBJECT (window));
    ephy_node_signal_connect_object (topics, EPHY_NODE_CHILD_REMOVED,
                     (EphyNodeCallback)node_removed_cb,
                     G_OBJECT (window));

    ephy_node_signal_connect_object (bookmarks, EPHY_NODE_CHILD_CHANGED,
                     (EphyNodeCallback)node_changed_cb,
                     G_OBJECT (window));        
    ephy_node_signal_connect_object (topics, EPHY_NODE_CHILD_CHANGED,
                     (EphyNodeCallback)node_changed_cb,
                     G_OBJECT (window));

    g_signal_connect_object (eb, "tree_changed",
                 G_CALLBACK (tree_changed_cb),
                 G_OBJECT (window), 0);

    /* Setup empty menu strings and add signal handlers to build the menus on demand */
    if (!bookmarks_menu_string)
            bookmarks_menu_string = g_string_new ("");

    action = find_action (manager, "Bookmarks");
    g_signal_connect_object (action, "activate",
                 G_CALLBACK (activate_bookmarks_menu),
                 G_OBJECT (window), 0);
}

void
ephy_bookmarks_ui_detach_window (EphyWindow *window)
{
    EphyBookmarks *eb = ephy_shell_get_bookmarks (ephy_shell);
    EphyNode *bookmarks = ephy_bookmarks_get_bookmarks (eb);
    EphyNode *topics = ephy_bookmarks_get_keywords (eb);

    BookmarksWindowData *data = g_object_get_data (G_OBJECT (window), BM_WINDOW_DATA_KEY);
    GtkUIManager *manager = ephy_window_get_ui_manager (window);
    GtkAction *action;

    g_return_if_fail (data != 0);

    if (data->bookmarks_menu)
        gtk_ui_manager_remove_ui (manager, data->bookmarks_menu);

    g_object_set_data (G_OBJECT (window), BM_WINDOW_DATA_KEY, 0);
    
    ephy_node_signal_disconnect_object (bookmarks, EPHY_NODE_CHILD_ADDED,
                        (EphyNodeCallback)node_added_cb,
                        G_OBJECT (window));
    ephy_node_signal_disconnect_object (topics, EPHY_NODE_CHILD_ADDED,
                        (EphyNodeCallback)node_added_cb,
                        G_OBJECT (window));
    
    ephy_node_signal_disconnect_object (bookmarks, EPHY_NODE_CHILD_REMOVED,
                        (EphyNodeCallback)node_removed_cb,
                        G_OBJECT (window));
    ephy_node_signal_disconnect_object (topics, EPHY_NODE_CHILD_REMOVED,
                        (EphyNodeCallback)node_removed_cb,
                        G_OBJECT (window));
    
    ephy_node_signal_disconnect_object (bookmarks, EPHY_NODE_CHILD_CHANGED,
                        (EphyNodeCallback)node_changed_cb,
                        G_OBJECT (window));        
    ephy_node_signal_disconnect_object (topics, EPHY_NODE_CHILD_CHANGED,
                        (EphyNodeCallback)node_changed_cb,
                        G_OBJECT (window));
    
    g_signal_handlers_disconnect_by_func
      (G_OBJECT (eb), G_CALLBACK (tree_changed_cb), G_OBJECT (window));
    
    action = find_action (manager, "Bookmarks");
    g_signal_handlers_disconnect_by_func
      (G_OBJECT (action), G_CALLBACK (activate_bookmarks_menu), G_OBJECT (window));
}

static void
properties_dialog_destroy_cb (EphyBookmarkProperties *dialog,
                  EphyNode *bookmark)
{
    g_hash_table_remove (properties_dialogs, bookmark);
}

void
ephy_bookmarks_ui_add_bookmark (GtkWindow *parent,
                const char *location, 
                const char *title)
{
    EphyBookmarks *bookmarks;
    EphyNode *bookmark;
    GtkWidget *dialog;

    if (g_settings_get_boolean (EPHY_SETTINGS_LOCKDOWN,
                    EPHY_PREFS_LOCKDOWN_BOOKMARK_EDITING))
        return;
    
    bookmarks = ephy_shell_get_bookmarks (ephy_shell_get_default ());
    bookmark = ephy_bookmarks_add (bookmarks, title, location);
    
    if (properties_dialogs == 0)
    {
        properties_dialogs = g_hash_table_new (g_direct_hash, g_direct_equal);
    }
    
    dialog = ephy_bookmark_properties_new (bookmarks, bookmark, TRUE);

    g_assert (parent != NULL);

    gtk_window_group_add_window (ephy_gui_ensure_window_group (parent),
                     GTK_WINDOW (dialog));
    gtk_window_set_transient_for (GTK_WINDOW (dialog), parent);

    g_signal_connect (dialog, "destroy",
              G_CALLBACK (properties_dialog_destroy_cb), bookmark);
    g_hash_table_insert (properties_dialogs,
                 bookmark, dialog);
    
    gtk_window_present_with_time (GTK_WINDOW (dialog),
                      gtk_get_current_event_time ());
}

void
ephy_bookmarks_ui_show_bookmark (EphyNode *bookmark)
{
    EphyBookmarks *bookmarks;
    GtkWidget *dialog;

    bookmarks = ephy_shell_get_bookmarks (ephy_shell_get_default ());

    g_return_if_fail (EPHY_IS_BOOKMARKS (bookmarks));
    g_return_if_fail (EPHY_IS_NODE (bookmark));

    if (properties_dialogs == 0)
    {
        properties_dialogs = g_hash_table_new (g_direct_hash, g_direct_equal);
    }
    
    dialog = g_hash_table_lookup (properties_dialogs, bookmark);

    if (dialog == NULL)
    {
        dialog = ephy_bookmark_properties_new (bookmarks, bookmark, FALSE);
        
        g_signal_connect (dialog, "destroy",
                  G_CALLBACK (properties_dialog_destroy_cb), bookmark);
        g_hash_table_insert (properties_dialogs,
                     bookmark, dialog);
    }

    gtk_window_present_with_time (GTK_WINDOW (dialog),
                      gtk_get_current_event_time ());
}