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Diffstat (limited to 'odk/examples/DevelopersGuide/Accessibility/MessageArea.java')
-rw-r--r-- | odk/examples/DevelopersGuide/Accessibility/MessageArea.java | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/odk/examples/DevelopersGuide/Accessibility/MessageArea.java b/odk/examples/DevelopersGuide/Accessibility/MessageArea.java deleted file mode 100644 index d71fc096..00000000 --- a/odk/examples/DevelopersGuide/Accessibility/MessageArea.java +++ /dev/null @@ -1,133 +0,0 @@ -/************************************************************************* - * - * The Contents of this file are made available subject to the terms of - * the BSD license. - * - * Copyright 2000, 2010 Oracle and/or its affiliates. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of Sun Microsystems, Inc. nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS - * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE - * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, - * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS - * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR - * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE - * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - *************************************************************************/ - -import java.awt.Font; -import java.awt.Rectangle; -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 instanciated 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. - */ - public static synchronized void print (String 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) - { - Instance().printMessage (aMessage+"\n"); - } - - - public void paintComponent (Graphics g) - { - // Synchronize with the graphics object to prevent paint problems. - // Remember that this is not done by Swing itself. - 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 JTextArea maText; -} |