moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 186 insertions, 0 deletions

diff --git a/libcaja-private/caja-file-dnd.c b/libcaja-private/caja-file-dnd.c
new file mode 100644
index 00000000..06a61daf
--- /dev/null
+++ b/libcaja-private/caja-file-dnd.c
@@ -0,0 +1,186 @@
+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
+
+/* caja-file-drag.c - Drag & drop handling code that operated on
+   CajaFile objects.
+
+   Copyright (C) 2000 Eazel, Inc.
+
+   The Mate 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 Mate 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 Mate Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.
+
+   Authors: Pavel Cisler <[email protected]>,
+*/
+
+#include <config.h>
+#include "caja-file-dnd.h"
+#include "caja-desktop-icon-file.h"
+
+#include "caja-dnd.h"
+#include "caja-directory.h"
+#include "caja-file-utilities.h"
+#include <eel/eel-glib-extensions.h>
+#include <string.h>
+
+static gboolean
+caja_drag_can_accept_files (CajaFile *drop_target_item)
+{
+    CajaDirectory *directory;
+
+    if (caja_file_is_directory (drop_target_item))
+    {
+        gboolean res;
+
+        /* target is a directory, accept if editable */
+        directory = caja_directory_get_for_file (drop_target_item);
+        res = caja_directory_is_editable (directory);
+        caja_directory_unref (directory);
+        return res;
+    }
+
+    if (CAJA_IS_DESKTOP_ICON_FILE (drop_target_item))
+    {
+        return TRUE;
+    }
+
+    /* All Caja links are assumed to be links to directories.
+     * Therefore, they all can accept drags, like all other
+     * directories to. As with other directories, there can be
+     * errors when the actual copy is attempted due to
+     * permissions.
+     */
+    if (caja_file_is_caja_link (drop_target_item))
+    {
+        return TRUE;
+    }
+
+    if (caja_is_file_roller_installed () &&
+            caja_file_is_archive (drop_target_item))
+    {
+        return TRUE;
+    }
+
+    return FALSE;
+}
+
+gboolean
+caja_drag_can_accept_item (CajaFile *drop_target_item,
+                           const char *item_uri)
+{
+    if (caja_file_matches_uri (drop_target_item, item_uri))
+    {
+        /* can't accept itself */
+        return FALSE;
+    }
+
+    return caja_drag_can_accept_files (drop_target_item);
+}
+
+gboolean
+caja_drag_can_accept_items (CajaFile *drop_target_item,
+                            const GList *items)
+{
+    int max;
+
+    if (drop_target_item == NULL)
+        return FALSE;
+
+    g_assert (CAJA_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 (!caja_drag_can_accept_item (drop_target_item,
+                                        ((CajaDragSelectionItem *)items->data)->uri))
+        {
+            return FALSE;
+        }
+    }
+
+    return TRUE;
+}
+
+gboolean
+caja_drag_can_accept_info (CajaFile *drop_target_item,
+                           CajaIconDndTargetType drag_type,
+                           const GList *items)
+{
+    switch (drag_type)
+    {
+    case CAJA_ICON_DND_MATE_ICON_LIST:
+        return caja_drag_can_accept_items (drop_target_item, items);
+
+    case CAJA_ICON_DND_URI_LIST:
+    case CAJA_ICON_DND_NETSCAPE_URL:
+    case CAJA_ICON_DND_TEXT:
+        return caja_drag_can_accept_files (drop_target_item);
+
+    case CAJA_ICON_DND_XDNDDIRECTSAVE:
+    case CAJA_ICON_DND_RAW:
+        return caja_drag_can_accept_files (drop_target_item); /* Check if we can accept files at this location */
+
+    case CAJA_ICON_DND_KEYWORD:
+        return TRUE;
+
+    case CAJA_ICON_DND_ROOTWINDOW_DROP:
+        return FALSE;
+
+        /* TODO return TRUE for folders as soon as drop handling is implemented */
+    case CAJA_ICON_DND_COLOR:
+    case CAJA_ICON_DND_BGIMAGE:
+    case CAJA_ICON_DND_RESET_BACKGROUND:
+        return FALSE;
+
+    default:
+        g_assert_not_reached ();
+        return FALSE;
+    }
+}
+
+void
+caja_drag_file_receive_dropped_keyword (CajaFile *file,
+                                        const char *keyword)
+{
+    GList *keywords, *word;
+
+    g_return_if_fail (CAJA_IS_FILE (file));
+    g_return_if_fail (keyword != NULL);
+
+    /* special case the erase emblem */
+    if (strcmp (keyword, CAJA_FILE_DND_ERASE_KEYWORD) == 0)
+    {
+        keywords = NULL;
+    }
+    else
+    {
+        keywords = caja_file_get_keywords (file);
+        word = g_list_find_custom (keywords, keyword, (GCompareFunc) strcmp);
+        if (word == NULL)
+        {
+            keywords = g_list_prepend (keywords, g_strdup (keyword));
+        }
+        else
+        {
+            keywords = g_list_remove_link (keywords, word);
+            g_free (word->data);
+            g_list_free_1 (word);
+        }
+    }
+
+    caja_file_set_keywords (file, keywords);
+    eel_g_list_free_deep (keywords);
+}