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/* nautilus-file-drag.c - Drag & drop handling code that operated on
NautilusFile objects.
Copyright (C) 2000 Eazel, Inc.
The Gnome Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The Gnome Library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the Gnome Library; see the file COPYING.LIB. If not,
see <http://www.gnu.org/licenses/>.
Authors: Pavel Cisler <pavel@eazel.com>,
*/
#include <config.h>
#include "nautilus-file-dnd.h"
#include "nautilus-desktop-icon-file.h"
#include "nautilus-dnd.h"
#include "nautilus-directory.h"
#include "nautilus-file-utilities.h"
#include <string.h>
static gboolean
nautilus_drag_can_accept_files (NautilusFile *drop_target_item)
{
if (nautilus_file_is_directory (drop_target_item)) {
NautilusDirectory *directory;
gboolean res;
/* target is a directory, accept if editable */
directory = nautilus_directory_get_for_file (drop_target_item);
res = nautilus_directory_is_editable (directory) &&
nautilus_file_can_write (drop_target_item);
nautilus_directory_unref (directory);
return res;
}
if (NAUTILUS_IS_DESKTOP_ICON_FILE (drop_target_item)) {
return TRUE;
}
/* Launchers are an acceptable drop target */
if (nautilus_file_is_launcher (drop_target_item)) {
return TRUE;
}
if (nautilus_is_file_roller_installed () &&
nautilus_file_is_archive (drop_target_item)) {
return TRUE;
}
return FALSE;
}
gboolean
nautilus_drag_can_accept_item (NautilusFile *drop_target_item,
const char *item_uri)
{
if (nautilus_file_matches_uri (drop_target_item, item_uri)) {
/* can't accept itself */
return FALSE;
}
return nautilus_drag_can_accept_files (drop_target_item);
}
gboolean
nautilus_drag_can_accept_items (NautilusFile *drop_target_item,
const GList *items)
{
int max;
if (drop_target_item == NULL)
return FALSE;
g_assert (NAUTILUS_IS_FILE (drop_target_item));
/* Iterate through selection checking if item will get accepted by the
* drop target. If more than 100 items selected, return an over-optimisic
* result
*/
for (max = 100; items != NULL && max >= 0; items = items->next, max--) {
if (!nautilus_drag_can_accept_item (drop_target_item,
((NautilusDragSelectionItem *)items->data)->uri)) {
return FALSE;
}
}
return TRUE;
}
gboolean
nautilus_drag_can_accept_info (NautilusFile *drop_target_item,
NautilusIconDndTargetType drag_type,
const GList *items)
{
switch (drag_type) {
case NAUTILUS_ICON_DND_GNOME_ICON_LIST:
return nautilus_drag_can_accept_items (drop_target_item, items);
case NAUTILUS_ICON_DND_URI_LIST:
case NAUTILUS_ICON_DND_NETSCAPE_URL:
case NAUTILUS_ICON_DND_TEXT:
return nautilus_drag_can_accept_files (drop_target_item);
case NAUTILUS_ICON_DND_XDNDDIRECTSAVE:
case NAUTILUS_ICON_DND_RAW:
return nautilus_drag_can_accept_files (drop_target_item); /* Check if we can accept files at this location */
case NAUTILUS_ICON_DND_ROOTWINDOW_DROP:
return FALSE;
default:
g_assert_not_reached ();
return FALSE;
}
}
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