Copied over SWT accessor bytecode for adding a shutdown hook

src/dorkbox/systemTray/swt/Swt.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2016 dorkbox, llc
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package dorkbox.systemTray.swt;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Event;
+import org.eclipse.swt.widgets.Listener;
+
+/**
+ * This isn't possible with reflection - so we compile it AHEAD of time and save the bytecode (which is then included with the release)
+ */
+public
+class Swt {
+    public static
+    void onShutdown(final Runnable runnable) {
+        Display.getCurrent().getShells()[0].addListener(SWT.Close, new Listener() {
+            @Override
+            public
+            void handleEvent(final Event event) {
+                runnable.run();
+            }
+        });
+    }
+}