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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /toolkit/test/accessibility/MessageArea.java | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/test/accessibility/MessageArea.java')
-rw-r--r-- | toolkit/test/accessibility/MessageArea.java | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/toolkit/test/accessibility/MessageArea.java b/toolkit/test/accessibility/MessageArea.java new file mode 100644 index 000000000..512cfaf73 --- /dev/null +++ b/toolkit/test/accessibility/MessageArea.java @@ -0,0 +1,131 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you 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 . + */ + +import java.awt.Font; +import java.awt.Color; +import java.awt.Graphics; +import javax.swing.JScrollPane; +import javax.swing.JTextArea; +import javax.swing.JScrollBar; + + + +/** A message area displays text in a scrollable text widget. It is a + singleton. Other objects can access it directly to display messages. +*/ +public class MessageArea + extends JScrollPane +{ + public static synchronized MessageArea Instance () + { + if (saInstance == null) + saInstance = new MessageArea (); + return saInstance; + } + + + + + /** Create a new message area. This method is private because the class is + a singleton and may therefore not be instantiated from the outside. + */ + private MessageArea () + { + maText = new JTextArea(); + maText.setBackground (new Color (255,250,240)); + maText.setFont (new Font ("Helvetica", Font.PLAIN, 9)); + setViewportView (maText); + setVerticalScrollBarPolicy (JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); + setHorizontalScrollBarPolicy (JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS); + + printMessage ( + "class path is " + System.getProperty ("java.class.path") + "\n"); + } + + + + + /** Show the given string at the end of the message area and scroll to make + it visible. Indent the string as requested. + */ + private static synchronized void print (int nIndentation, String aMessage) + { + while (nIndentation-- > 0) { + aMessage = " " + aMessage; + } + Instance().printMessage(aMessage); + } + + + + + /** Show the given string at the end of the message area and scroll to make + it visible. + */ + public static void println (String aMessage) + { + println (0, aMessage); + } + + + + + /** Show the given string at the end of the message area and scroll to make + it visible. + */ + private static void println (int nIndentation, String aMessage) + { + print (nIndentation, aMessage+"\n"); + } + + + + + @Override + public void paintComponent (Graphics g) + { + synchronized (g) + { + JScrollBar sb = getVerticalScrollBar(); + if (sb != null) + { + int nScrollBarValue = sb.getMaximum() - sb.getVisibleAmount() - 1; + sb.setValue (nScrollBarValue); + } + super.paintComponent (g); + } + } + + + + + /** Append the given string to the end of the text and scroll so that it + becomes visible. This is an internal method. Use one of the static + and public ones. + */ + private synchronized void printMessage (String aMessage) + { + maText.append (aMessage); + } + + + + + private static MessageArea saInstance = null; + private final JTextArea maText; +} |