path: root/lib/ephy-dnd.c

/*
 *  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.
 */

#include "ephy-dnd.h"
#include "ephy-string.h"
#include "ephy-node.h"

#include <gtk/gtkselection.h>
#include <gtk/gtktreeview.h>
#include <string.h>

/* Encode a "_NETSCAPE_URL_" selection.
 * As far as I can tell, Netscape is expecting a single
 * URL to be returned.  I cannot discover a way to construct
 * a list to be returned that Netscape can understand.
 * GMC also fails to do this as well.
 */
static void
add_one_netscape_url (const char *url, int x, int y, int w, int h, gpointer data)
{
        GString *result;

        result = (GString *) data;
        if (result->len == 0) {
                g_string_append (result, url);
        }
}

static void
add_one_uri (const char *uri, int x, int y, int w, int h, gpointer data)
{
        GString *result;

        result = (GString *) data;

        g_string_append (result, uri);
        g_string_append (result, "\r\n");
}

static void
add_one_node (const char *uri, int x, int y, int w, int h, gpointer data)
{
        GString *result;

        result = (GString *) data;

        g_string_append (result, uri);
        g_string_append (result, ";");
}

gboolean
ephy_dnd_drag_data_get (GtkWidget *widget,
                        GdkDragContext *context,
                        GtkSelectionData *selection_data,
                        guint32 time,
                        gpointer container_context,
                        EphyDragEachSelectedItemIterator each_selected_item_iterator)
{
        GString *result = NULL;
    GdkAtom target;

    target = selection_data->target;

    if (target == gdk_atom_intern (EPHY_DND_URI_LIST_TYPE, FALSE) ||
        target == gdk_atom_intern (EPHY_DND_TEXT_TYPE, FALSE))
    {
        result = g_string_new (NULL);
                (* each_selected_item_iterator) (add_one_uri, container_context, result);
    }
    else if (target == gdk_atom_intern (EPHY_DND_URL_TYPE, FALSE))
    {
        result = g_string_new (NULL);
                (* each_selected_item_iterator) (add_one_netscape_url, container_context, result);
    }
    else if (target == gdk_atom_intern (EPHY_DND_TOPIC_TYPE, FALSE) ||
             target == gdk_atom_intern (EPHY_DND_BOOKMARK_TYPE, FALSE))
    {
        result = g_string_new (NULL);
                (* each_selected_item_iterator) (add_one_node, container_context, result);
        g_string_erase (result, result->len - 1, -1);
    }
    else
    {
        g_assert_not_reached ();
    }

        gtk_selection_data_set (selection_data,
                                selection_data->target,
                                8, result->str, result->len);

    g_string_free (result, TRUE);

        return TRUE;
}

GList *
ephy_dnd_node_list_extract_nodes (const char *node_list)
{
    GList *result = NULL;
    char **nodes;
    int i;

    nodes = g_strsplit (node_list, ";", -1);

    for (i = 0; nodes[i] != NULL; i = i + 2)
    {
        gulong id;
        EphyNodeDb *db;

        db = ephy_node_db_get_by_name (nodes[i]);
        g_return_val_if_fail (db != NULL, NULL);

        if (ephy_string_to_int (nodes[i + 1], &id))
        {
            EphyNode *node;

            node = ephy_node_db_get_node_from_id (db, id);
            g_return_val_if_fail (node != NULL, NULL);
            result = g_list_append (result, node);
        }
    }

    return result;
}