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diff --git a/subprojects/shew/src/shew-external-window.c b/subprojects/shew/src/shew-external-window.c
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+/*
+ * Copyright © 2016 Red Hat, Inc
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors:
+ * Jonas Ådahl <jadahl@redhat.com>
+ */
+
+#include <string.h>
+
+#include "shew-external-window.h"
+#include "shew-external-window-x11.h"
+#include "shew-external-window-wayland.h"
+
+enum
+{
+ PROP_0,
+
+ PROP_DISPLAY,
+};
+
+typedef struct _ShewExternalWindowPrivate
+{
+ GdkDisplay *display;
+} ShewExternalWindowPrivate;
+
+G_DEFINE_TYPE_WITH_PRIVATE (ShewExternalWindow, shew_external_window, G_TYPE_OBJECT)
+
+ShewExternalWindow *
+shew_external_window_new_from_handle (const char *handle_str)
+{
+#ifdef GDK_WINDOWING_X11
+ {
+ const char x11_prefix[] = "x11:";
+ if (g_str_has_prefix (handle_str, x11_prefix))
+ {
+ ShewExternalWindowX11 *external_window_x11;
+ const char *x11_handle_str = handle_str + strlen (x11_prefix);
+
+ external_window_x11 = shew_external_window_x11_new (x11_handle_str);
+ return SHEW_EXTERNAL_WINDOW (external_window_x11);
+ }
+ }
+#endif
+#ifdef GDK_WINDOWING_WAYLAND
+ {
+ const char wayland_prefix[] = "wayland:";
+ if (g_str_has_prefix (handle_str, wayland_prefix))
+ {
+ ShewExternalWindowWayland *external_window_wayland;
+ const char *wayland_handle_str = handle_str + strlen (wayland_prefix);
+
+ external_window_wayland =
+ shew_external_window_wayland_new (wayland_handle_str);
+ return SHEW_EXTERNAL_WINDOW (external_window_wayland);
+ }
+ }
+#endif
+
+ g_warning ("Unhandled parent window type %s\n", handle_str);
+ return NULL;
+}
+
+void
+shew_external_window_set_parent_of (ShewExternalWindow *external_window,
+ GdkWindow *child_window)
+{
+ SHEW_EXTERNAL_WINDOW_GET_CLASS (external_window)->set_parent_of (external_window,
+ child_window);
+}
+
+/**
+ * shew_external_window_get_display:
+ * Returns: (transfer none)
+ */
+GdkDisplay *
+shew_external_window_get_display (ShewExternalWindow *external_window)
+{
+ ShewExternalWindowPrivate *priv =
+ shew_external_window_get_instance_private (external_window);
+
+ return priv->display;
+}
+
+static void
+shew_external_window_set_property (GObject *object,
+ guint prop_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ ShewExternalWindow *external_window = SHEW_EXTERNAL_WINDOW (object);
+ ShewExternalWindowPrivate *priv =
+ shew_external_window_get_instance_private (external_window);
+
+ switch (prop_id)
+ {
+ case PROP_DISPLAY:
+ g_set_object (&priv->display, g_value_get_object (value));
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+shew_external_window_get_property (GObject *object,
+ guint prop_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ ShewExternalWindow *external_window = SHEW_EXTERNAL_WINDOW (object);
+ ShewExternalWindowPrivate *priv =
+ shew_external_window_get_instance_private (external_window);
+
+ switch (prop_id)
+ {
+ case PROP_DISPLAY:
+ g_value_set_object (value, priv->display);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ }
+}
+
+static void
+shew_external_window_init (ShewExternalWindow *external_window)
+{
+}
+
+static void
+shew_external_window_class_init (ShewExternalWindowClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+ object_class->get_property = shew_external_window_get_property;
+ object_class->set_property = shew_external_window_set_property;
+
+ g_object_class_install_property (object_class,
+ PROP_DISPLAY,
+ g_param_spec_object ("display",
+ "GdkDisplay",
+ "The GdkDisplay instance",
+ GDK_TYPE_DISPLAY,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+}