Mercurial > projects > dwt-mac
view dwt/dnd/DragSourceEffect.d @ 156:969e7de37c3d default tip
Fixes to get dwt to work with dmd and ldc
author | Jacob Carlborg <doob@me.com> |
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date | Wed, 08 Jul 2009 21:56:44 +0200 |
parents | bc175cd0484a |
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/******************************************************************************* * Copyright (c) 2007, 2008 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: * Jacob Carlborg <doob@me.com> *******************************************************************************/ module dwt.dnd.DragSourceEffect; import dwt.dwthelper.utils; import dwt.DWT; import dwt.widgets.Control; import dwt.dnd.DragSourceAdapter; /** * This class provides default implementations to display a drag source * effect during a drag and drop operation. The current implementation * does not provide any visual feedback. * * <p>The drag source effect has the same API as the * <code>DragSourceAdapter</code> so that it can provide custom visual * feedback when a <code>DragSourceEvent</code> occurs. * </p> * * <p>Classes that wish to provide their own drag source effect such as * displaying a default source image during a drag can extend the <code>DragSourceEffect</code> * class, override the <code>DragSourceAdapter.dragStart</code> method and set * the field <code>DragSourceEvent.image</code> with their own image. * The image should be disposed when <code>DragSourceAdapter.dragFinished</code> is called. * </p> * * @see DragSourceAdapter * @see DragSourceEvent * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> * * @since 3.3 */ public class DragSourceEffect : DragSourceAdapter { Control control = null; /** * Creates a new <code>DragSourceEffect</code> to handle drag effect from the specified <code>Control</code>. * * @param control the <code>Control</code> that the user clicks on to initiate the drag * * @exception IllegalArgumentException <ul> * <li>ERROR_NULL_ARGUMENT - if the control is null</li> * </ul> */ public this(Control control) { if (control is null) DWT.error(DWT.ERROR_NULL_ARGUMENT); this.control = control; } /** * Returns the Control which is registered for this DragSourceEffect. This is the control that the * user clicks in to initiate dragging. * * @return the Control which is registered for this DragSourceEffect */ public Control getControl() { return control; } }