Mercurial > projects > dwt-linux
view dwt/events/KeyEvent.d @ 150:f2e04420fd6c
reworked overrides and superclass aliases
author | Frank Benoit <benoit@tionex.de> |
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date | Thu, 31 Jan 2008 19:04:56 +0100 |
parents | c3d44df6708f |
children | 380bad9f6852 |
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/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwt.events.KeyEvent; import dwt.widgets.Event; import dwt.events.TypedEvent; import tango.text.convert.Format; /** * Instances of this class are sent as a result of * keys being pressed and released on the keyboard. * <p> * When a key listener is added to a control, the control * will take part in widget traversal. By default, all * traversal keys (such as the tab key and so on) are * delivered to the control. In order for a control to take * part in traversal, it should listen for traversal events. * Otherwise, the user can traverse into a control but not * out. Note that native controls such as table and tree * implement key traversal in the operating system. It is * not necessary to add traversal listeners for these controls, * unless you want to override the default traversal. * </p> * @see KeyListener * @see TraverseListener */ public class KeyEvent : TypedEvent { /** * the character represented by the key that was typed. * This is the final character that results after all modifiers have been * applied. For example, when the user types Ctrl+A, the character value * is 0x01. It is important that applications do not attempt to modify the * character value based on a stateMask (such as DWT.CTRL) or the resulting * character will not be correct. */ public wchar character = '\0'; /** * the key code of the key that was typed, * as defined by the key code constants in class <code>DWT</code>. * When the character field of the event is ambiguous, this field * contains the unicode value of the original character. For example, * typing Ctrl+M or Return both result in the character '\r' but the * keyCode field will also contain '\r' when Return was typed. * * @see dwt.DWT */ public int keyCode; /** * the state of the keyboard modifier keys at the time * the event was generated, as defined by the key code * constants in class <code>DWT</code>. * * @see dwt.DWT */ public int stateMask; /** * A flag indicating whether the operation should be allowed. * Setting this field to <code>false</code> will cancel the operation. */ public bool doit; static final long serialVersionUID = 3256442491011412789L; /** * Constructs a new instance of this class based on the * information in the given untyped event. * * @param e the untyped event containing the information */ public this(Event e) { super(e); this.character = e.character; this.keyCode = e.keyCode; this.stateMask = e.stateMask; this.doit = e.doit; } /** * Returns a string containing a concise, human-readable * description of the receiver. * * @return a string representation of the event */ public override char[] toString() { return Format( "{} character={} keyCode={} stateMask={} doit={}}", super.toString[ 0 .. $-2 ], character, keyCode, stateMask, doit ); } }