forked from dorkbox/SystemTray
59 lines
2.2 KiB
Java
59 lines
2.2 KiB
Java
/*
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* Copyright 2016 dorkbox, llc
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dorkbox.systemTray.util;
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/**
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* Utility methods for SWT.
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* <p>
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* SWT system tray types are just GTK trays.
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* <p>
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* Creating custom methods for a class is not possible with reflection - so we compile it AHEAD of time as Java 1.6, and save the bytecode
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* (which is then included with the release)
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* <p>
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* We **COULD** do some ASM/Bytecode generation, but why bother with even more libraries when it's just as easy to include it pre-compiled.
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*/
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public
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class Swt {
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public static
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boolean isLoaded() throws Exception {
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// maybe we should load the SWT version? (In order for us to work with SWT, BOTH must be GTK2!!
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// SWT is GTK2, but if -DSWT_GTK3=1 is specified, it can be GTK3
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java.lang.reflect.Method m = ClassLoader.class.getDeclaredMethod("findLoadedClass", String.class);
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m.setAccessible(true);
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ClassLoader cl = ClassLoader.getSystemClassLoader();
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return null != m.invoke(cl, "org.eclipse.swt.widgets.Display");
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}
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public static
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void dispatch(final Runnable runnable) {
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org.eclipse.swt.widgets.Display.getCurrent()
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.asyncExec(runnable);
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}
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public static
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void onShutdown(final Runnable runnable) {
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org.eclipse.swt.widgets.Display.getCurrent()
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.getShells()[0].addListener(org.eclipse.swt.SWT.Close, new org.eclipse.swt.widgets.Listener() {
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@Override
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public
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void handleEvent(final org.eclipse.swt.widgets.Event event) {
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runnable.run();
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}
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});
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}
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}
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