/* * Copyright (c) 2001, 2023, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* @test @bug 4260109 @summary tests that the text limit is set to the maximum possible value @key headful */ import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.Frame; import java.awt.TextArea; public class TextLimitTest { static Frame frame; static TextArea textarea; public static void main(String[] args) throws Exception { try { EventQueue.invokeAndWait(() -> { StringBuffer buffer = new StringBuffer(); frame = new Frame("Text Limit Test"); textarea = new TextArea(3, 10); frame.setLayout(new BorderLayout()); frame.add(textarea); frame.setSize(200, 200); frame.pack(); frame.setVisible(true); /* * The magic number 0xF700 was choosen because of the two reasons: * - it shouldn't be greater since on win95 (even in native win32 apps) * adding more than 0xF800 symbols to a textarea doesn't always work, * - it shouldn't be less since in this case we won't run in the stack * overflow on Win95 even if we use W2A allocating memory on the stack. */ for (int i = 0; i < 0xF700; i += 0x10) { buffer.append("0123456789abcdef"); } textarea.setText(buffer.toString()); System.out.println("Text length before append: " + Integer.toString(textarea.getText().length(), 16)); textarea.append("0123456789abcdef"); int len = textarea.getText().length(); System.out.println("Text length after append: " + Integer.toString(len, 16)); if (len != 0xF710) { throw new RuntimeException("Test failed: textarea has " + "wrong text limit!"); } }); System.out.println("Test pass"); } finally { EventQueue.invokeAndWait(() -> { if (frame != null) { frame.dispose(); } }); } } }