Mercurial > projects > dwt-linux
annotate dwt/SWTException.d @ 10:63c023465156
moved from org.eclipse.swt to dwt
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Sat, 05 Jan 2008 17:58:37 +0100 |
| parents | ad2b69216039 |
| children | 8cec8f536af3 |
| rev | line source |
|---|---|
| 0 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2000, 2005 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 *******************************************************************************/ | |
|
10
63c023465156
moved from org.eclipse.swt to dwt
Frank Benoit <benoit@tionex.de>
parents:
9
diff
changeset
|
11 module dwt.SWTException; |
| 0 | 12 |
|
10
63c023465156
moved from org.eclipse.swt to dwt
Frank Benoit <benoit@tionex.de>
parents:
9
diff
changeset
|
13 import dwt.SWT; |
| 0 | 14 |
| 15 import tango.core.Exception; | |
| 16 import tango.io.Stdout; | |
| 17 | |
| 18 /** | |
| 19 * This runtime exception is thrown whenever a recoverable error | |
| 20 * occurs internally in SWT. The message text and error code | |
| 21 * provide a further description of the problem. The exception | |
| 22 * has a <code>throwable</code> field which holds the underlying | |
| 23 * exception that caused the problem (if this information is | |
| 24 * available (i.e. it may be null)). | |
| 25 * <p> | |
| 26 * SWTExceptions are thrown when something fails internally, | |
| 27 * but SWT is left in a known stable state (eg. a widget call | |
| 28 * was made from a non-u/i thread, or there is failure while | |
| 29 * reading an Image because the source file was corrupt). | |
| 30 * </p> | |
| 31 * | |
| 32 * @see SWTError | |
| 33 */ | |
| 34 | |
| 35 public class SWTException : TracedException { | |
| 36 /** | |
| 37 * The SWT error code, one of SWT.ERROR_*. | |
| 38 */ | |
| 39 public int code; | |
| 40 | |
| 41 /** | |
| 42 * The underlying throwable that caused the problem, | |
| 43 * or null if this information is not available. | |
| 44 */ | |
| 45 public TracedException throwable; | |
| 46 | |
| 47 //static final long serialVersionUID = 3257282552304842547L; | |
| 48 | |
| 49 /** | |
| 50 * Constructs a new instance of this class with its | |
| 51 * stack trace filled in. The error code is set to an | |
| 52 * unspecified value. | |
| 53 */ | |
| 54 public this () { | |
| 55 this (SWT.ERROR_UNSPECIFIED); | |
| 56 } | |
| 57 | |
| 58 /** | |
| 59 * Constructs a new instance of this class with its | |
| 60 * stack trace and message filled in. The error code is | |
| 61 * set to an unspecified value. Specifying <code>null</code> | |
| 62 * as the message is equivalent to specifying an empty string. | |
| 63 * | |
| 64 * @param message the detail message for the exception | |
| 65 */ | |
| 66 public this (char[] message) { | |
| 67 this (SWT.ERROR_UNSPECIFIED, message); | |
| 68 } | |
| 69 | |
| 70 /** | |
| 71 * Constructs a new instance of this class with its | |
| 72 * stack trace and error code filled in. | |
| 73 * | |
| 74 * @param code the SWT error code | |
| 75 */ | |
| 76 public this (int code) { | |
| 77 this (code, SWT.findErrorText (code)); | |
| 78 } | |
| 79 | |
| 80 /** | |
| 81 * Constructs a new instance of this class with its | |
| 82 * stack trace, error code and message filled in. | |
| 83 * Specifying <code>null</code> as the message is | |
| 84 * equivalent to specifying an empty string. | |
| 85 * | |
| 86 * @param code the SWT error code | |
| 87 * @param message the detail message for the exception | |
| 88 */ | |
| 89 public this (int code, char[] message) { | |
| 90 super (message); | |
| 91 this.code = code; | |
| 92 } | |
| 93 | |
| 94 /** | |
| 95 * Returns the underlying throwable that caused the problem, | |
| 96 * or null if this information is not available. | |
| 97 * <p> | |
| 98 * NOTE: This method overrides Throwable.getCause() that was | |
| 99 * added to JDK1.4. It is necessary to override this method | |
| 100 * in order for inherited printStackTrace() methods to work. | |
| 101 * </p> | |
| 102 * @return the underlying throwable | |
| 103 * | |
| 104 * @since 3.1 | |
| 105 */ | |
| 106 public TracedException getCause() { | |
| 107 return throwable; | |
| 108 } | |
| 109 | |
| 110 /** | |
| 111 * Returns the string describing this SWTException object. | |
| 112 * <p> | |
| 113 * It is combined with the message string of the Throwable | |
| 114 * which caused this SWTException (if this information is available). | |
| 115 * </p> | |
| 116 * @return the error message string of this SWTException object | |
| 117 */ | |
| 118 public char[] getMessage () { | |
| 119 if (throwable is null) return super.toString (); | |
| 120 return super.toString () ~ " (" ~ throwable.toString () ~ ")"; //$NON-NLS-1$ //$NON-NLS-2$ | |
| 121 } | |
| 122 | |
| 123 /** | |
| 124 * Outputs a printable representation of this exception's | |
| 125 * stack trace on the standard error stream. | |
| 126 * <p> | |
| 127 * Note: printStackTrace(PrintStream) and printStackTrace(PrintWriter) | |
| 128 * are not provided in order to maintain compatibility with CLDC. | |
| 129 * </p> | |
| 130 */ | |
| 131 public void printStackTrace () { | |
| 132 Stderr.formatln( "stacktrace follows (if feature compiled in)" ); | |
| 133 foreach( msg; this ){ | |
| 134 Stderr.formatln( "{}", msg ); | |
| 135 } | |
| 136 if ( throwable !is null) { | |
| 137 Stderr.formatln ("*** Stack trace of contained exception ***"); //$NON-NLS-1$ | |
| 138 foreach( msg; throwable ){ | |
| 139 Stderr.formatln( "{}", msg ); | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 } | |
| 145 | |
| 146 |