diff -r 000000000000 -r 804d8803eade ui/gtk/dnd.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/gtk/dnd.c	Wed Dec 09 11:32:01 2020 +0100
@@ -0,0 +1,101 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2017 Olaf Wintermann. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "dnd.h"
+#include <ucx/buffer.h>
+
+#ifdef UI_GTK2LEGACY
+static gboolean selection_data_set_uris(GtkSelectionData *selection_data, char **uris) {
+    UcxBuffer *buf = ucx_buffer_new(NULL, 1024, UCX_BUFFER_AUTOEXTEND);
+    char *uri;
+    int i = 0;
+    while((uri = uris[i]) != NULL) {
+        ucx_buffer_puts(buf, uri);
+        ucx_buffer_puts(buf, "\r\n");
+    }
+    GdkAtom type = gdk_atom_intern("text/uri-list", FALSE);
+    gtk_selection_data_set(selection_data, type, 8, (guchar*)buf->space, buf->pos);
+    ucx_buffer_free(buf);
+    return TRUE;
+}
+static char** selection_data_get_uris(GtkSelectionData *selection_data) {
+    // TODO: implement
+    return NULL;
+}
+#define gtk_selection_data_set_uris selection_data_set_uris
+#define gtk_selection_data_get_uris selection_data_get_uris
+#endif
+
+void ui_selection_settext(UiSelection *sel, char *str, int len) {
+    // TODO: handle error?
+    gtk_selection_data_set_text(sel->data, str, len);
+}
+
+void ui_selection_seturis(UiSelection *sel, char **uris, int nelm) {
+    char **uriarray = calloc(nelm+1, sizeof(char*));
+    for(int i=0;i<nelm;i++) {
+        uriarray[i] = uris[i];
+    }
+    uriarray[nelm] = NULL;
+    gtk_selection_data_set_uris(sel->data, uriarray);
+}
+
+char* ui_selection_gettext(UiSelection *sel) {
+    guchar *text = gtk_selection_data_get_text(sel->data);
+    if(text) {
+        char *textcp = strdup((char*)text);
+        g_free(text);
+        return textcp;
+    }
+    return NULL;
+}
+
+char** ui_selection_geturis(UiSelection *sel, size_t *nelm) {
+    gchar **uris = gtk_selection_data_get_uris(sel->data);
+    if(uris) {
+        size_t al = 32;
+        char **array = malloc(al * sizeof(char*));
+        size_t i = 0;
+        while(uris[i] != NULL) {
+            if(i >= al) {
+                al *= 2;
+                array = realloc(array, al * sizeof(char*));
+            }
+            array[i] = strdup((char*)uris[i]);
+            i++;
+        }
+        *nelm = i;
+        g_strfreev(uris);
+        return array;
+    }
+    return NULL;
+}