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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| ThrowablePanel.java | 0% | 0% | 0% | 0% |
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| 1 | /* | |
| 2 | * Copyright (c) 1998, 2005 Gargoyle Software Inc. All rights reserved. | |
| 3 | * | |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted provided that the following conditions are met: | |
| 6 | * | |
| 7 | * 1. Redistributions of source code must retain the above copyright notice, | |
| 8 | * this list of conditions and the following disclaimer. | |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 10 | * this list of conditions and the following disclaimer in the documentation | |
| 11 | * and/or other materials provided with the distribution. | |
| 12 | * 3. The end-user documentation included with the redistribution, if any, must | |
| 13 | * include the following acknowledgment: | |
| 14 | * | |
| 15 | * "This product includes software developed by Gargoyle Software Inc. | |
| 16 | * (http://www.GargoyleSoftware.com/)." | |
| 17 | * | |
| 18 | * Alternately, this acknowledgment may appear in the software itself, if | |
| 19 | * and wherever such third-party acknowledgments normally appear. | |
| 20 | * 4. The name "Gargoyle Software" must not be used to endorse or promote | |
| 21 | * products derived from this software without prior written permission. | |
| 22 | * For written permission, please contact info@GargoyleSoftware.com. | |
| 23 | * 5. Products derived from this software may not be called "GSBase", nor may | |
| 24 | * "GSBase" appear in their name, without prior written permission of | |
| 25 | * Gargoyle Software Inc. | |
| 26 | * | |
| 27 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, | |
| 28 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND | |
| 29 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARGOYLE | |
| 30 | * SOFTWARE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
| 31 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 32 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, | |
| 33 | * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 34 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 35 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, | |
| 36 | * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 37 | */ | |
| 38 | package com.gargoylesoftware.base.gui; | |
| 39 | ||
| 40 | import com.gargoylesoftware.base.util.DetailedNullPointerException; | |
| 41 | import javax.swing.JScrollPane; | |
| 42 | import javax.swing.JTextArea; | |
| 43 | import java.io.PrintWriter; | |
| 44 | import java.io.StringWriter; | |
| 45 | ||
| 46 | /** | |
| 47 | * A panel that can display an exception stack trace. | |
| 48 | * | |
| 49 | * @version $Revision: 1.6 $ | |
| 50 | * @author <a href="mailto:mbowler@GargoyleSoftware.com">Mike Bowler</a> | |
| 51 | */ | |
| 52 | public class ThrowablePanel extends JScrollPane { | |
| 53 | private static final long serialVersionUID = 1; | |
| 54 | private Throwable throwable_ = null; | |
| 55 | private final JTextArea textArea_; | |
| 56 | ||
| 57 | /** | |
| 58 | * Create a new panel. | |
| 59 | */ | |
| 60 | 0 | public ThrowablePanel() { |
| 61 | 0 | super( new JTextArea() ); |
| 62 | 0 | textArea_ = (JTextArea)getViewport().getView(); |
| 63 | } | |
| 64 | ||
| 65 | /** | |
| 66 | * Create a new panel. | |
| 67 | * @param t The exception to display. | |
| 68 | */ | |
| 69 | 0 | public ThrowablePanel( final Throwable t ) { |
| 70 | 0 | this(); |
| 71 | 0 | setException(t); |
| 72 | } | |
| 73 | ||
| 74 | /** | |
| 75 | * Set the exception that is being displayed. | |
| 76 | * @param t The new exception. | |
| 77 | */ | |
| 78 | 0 | public void setException( final Throwable t ) { |
| 79 | 0 | assertNotNull("t", t); |
| 80 | 0 | throwable_ = t; |
| 81 | 0 | textArea_.setText( makeString(t) ); |
| 82 | } | |
| 83 | ||
| 84 | /** | |
| 85 | * Return the exception that is being displayed. | |
| 86 | * @return The exception. | |
| 87 | */ | |
| 88 | 0 | public Throwable getException() { |
| 89 | 0 | return throwable_; |
| 90 | } | |
| 91 | ||
| 92 | /** | |
| 93 | * Make a string from the exception. | |
| 94 | * @param t The throwable object | |
| 95 | * @return A string containing the stack trace | |
| 96 | */ | |
| 97 | 0 | private static String makeString( final Throwable t ) { |
| 98 | 0 | final StringWriter stringWriter = new StringWriter(); |
| 99 | 0 | final PrintWriter printWriter = new PrintWriter(stringWriter); |
| 100 | 0 | t.printStackTrace(printWriter); |
| 101 | ||
| 102 | 0 | return stringWriter.toString(); |
| 103 | } | |
| 104 | ||
| 105 | ||
| 106 | /** | |
| 107 | * Verify that the specified value is not null. If it is then throw an exception | |
| 108 | * | |
| 109 | * @param fieldName The name of the field to check | |
| 110 | * @param fieldValue The value of the field to check | |
| 111 | * @exception DetailedNullPointerException If fieldValue is null | |
| 112 | */ | |
| 113 | 0 | protected final void assertNotNull( final String fieldName, final Object fieldValue ) |
| 114 | throws DetailedNullPointerException { | |
| 115 | ||
| 116 | 0 | if( fieldValue == null ) { |
| 117 | 0 | throw new DetailedNullPointerException(fieldName); |
| 118 | } | |
| 119 | } | |
| 120 | } | |
| 121 |
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