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/*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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*
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* Copyright 2011 OpenConcerto, by ILM Informatique. All rights reserved.
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*
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* The contents of this file are subject to the terms of the GNU General Public License Version 3
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* only ("GPL"). You may not use this file except in compliance with the License. You can obtain a
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* copy of the License at http://www.gnu.org/licenses/gpl-3.0.html See the License for the specific
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* language governing permissions and limitations under the License.
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*
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* When distributing the software, include this License Header Notice in each file.
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*/
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package org.openconcerto.ui;
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import org.openconcerto.utils.Platform;
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import java.awt.Toolkit;
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import java.lang.reflect.Field;
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import java.util.Objects;
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import java.util.function.Supplier;
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public class WindowUtils {
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private WindowUtils() {
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}
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/**
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* Allow to set WM_CLASS for X11 windows.
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*
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* @param nameSupplier which name to use.
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* @param pidSuffix <code>true</code> if the name should be suffixed by the PID of the VM. That
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* way, there is one group of windows per launch.
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*/
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static public void setWMClass(final Supplier<String> nameSupplier, final boolean pidSuffix) {
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// Set WM_CLASS to have a meaningful name and avoid grouping together all windows of all VMs
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final Class<?> xtoolkit = Toolkit.getDefaultToolkit().getClass();
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// https://bugs.openjdk.java.net/browse/JDK-6528430
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// need system property to override default WM_CLASS
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// #183739 - provide proper app name on Linux
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// org/netbeans/core/windows/view/ui/MainWindow.java
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if (xtoolkit.getName().equals("sun.awt.X11.XToolkit")) {
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try {
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final Field awtAppClassName = xtoolkit.getDeclaredField("awtAppClassName");
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awtAppClassName.setAccessible(true);
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String pid = null;
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// use PID to have one group of windows per launch
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if (pidSuffix) {
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try {
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final Platform p = Platform.getInstance();
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if (p.supportsPID())
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pid = p.getPID();
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} catch (Exception e1) {
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e1.printStackTrace();
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}
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}
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final String suppliedName = Objects.requireNonNull(nameSupplier.get(), "Null name").trim();
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if (suppliedName.isEmpty())
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throw new IllegalArgumentException("Empty name");
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final String name = suppliedName + (pid == null ? "" : " [" + pid + "]");
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awtAppClassName.set(null, name);
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} catch (Exception x) {
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x.printStackTrace();
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}
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}
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}
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}
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