--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/ui/common/app.c Sun Dec 07 11:05:22 2025 +0100
@@ -0,0 +1,71 @@
+/*
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
+ *
+ * Copyright 2025 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 "app.h"
+
+static ui_callback startup_func;
+static void *startup_data;
+static ui_callback open_func;
+void *open_data;
+static ui_callback exit_func;
+void *exit_data;
+
+
+void ui_onstartup(ui_callback f, void *userdata) {
+ startup_func = f;
+ startup_data = userdata;
+}
+
+void ui_onopen(ui_callback f, void *userdata) {
+ open_func = f;
+ open_data = userdata;
+}
+
+void ui_onexit(ui_callback f, void *userdata) {
+ exit_func = f;
+ exit_data = userdata;
+}
+
+
+void uic_application_startup(UiEvent *event) {
+ if(startup_func) {
+ startup_func(event, startup_data);
+ }
+}
+
+void uic_application_open(UiEvent *event) {
+ if(open_func) {
+ open_func(event, open_data);
+ }
+}
+
+void uic_application_exit(UiEvent *event) {
+ if(exit_func) {
+ exit_func(event, exit_data);
+ }
+}