83 lines
3.0 KiB
Java
83 lines
3.0 KiB
Java
/*
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* Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/* @test
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@bug 6688203
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@summary Memory leak and performance problems in the method getFileSystemView of FileSystemView
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@author Pavel Porvatov
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@modules java.desktop/javax.swing.filechooser:open
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@run main bug6688203
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*/
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import javax.swing.*;
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import javax.swing.filechooser.FileSystemView;
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import java.io.File;
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import java.lang.reflect.Field;
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public class bug6688203 {
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public static void main(String[] args) {
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// Create an instance of FileSystemView
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FileSystemView.getFileSystemView();
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int startCount = UIManager.getPropertyChangeListeners().length;
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for (int i = 0; i < 100; i++) {
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FileSystemView.getFileSystemView();
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}
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if (startCount != UIManager.getPropertyChangeListeners().length) {
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throw new RuntimeException("New listeners were added into UIManager");
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}
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FileSystemView fileSystemView = FileSystemView.getFileSystemView();
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File file = new File("Some file");
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for (UIManager.LookAndFeelInfo lafInfo : UIManager.getInstalledLookAndFeels()) {
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try {
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UIManager.setLookAndFeel(lafInfo.getClassName());
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} catch (Exception e) {
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// Ignore such errors
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System.out.println("Cannot set LAF " + lafInfo.getName());
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continue;
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}
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fileSystemView.getSystemDisplayName(file);
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try {
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Field field = FileSystemView.class.getDeclaredField("useSystemExtensionHiding");
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field.setAccessible(true);
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Boolean value = field.getBoolean(fileSystemView);
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if (value != UIManager.getDefaults().getBoolean("FileChooser.useSystemExtensionHiding")) {
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throw new RuntimeException("Invalid cached value of the FileSystemView.useSystemExtensionHiding field");
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}
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} catch (Exception e) {
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throw new RuntimeException("Cannot read the FileSystemView.useSystemExtensionHiding field", e);
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}
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}
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}
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}
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