Mercurial > projects > dwt-addons
view dwtx/draw2d/ConnectionAnchorBase.d @ 98:95307ad235d9
Added Draw2d code, still work in progress
author | Frank Benoit <benoit@tionex.de> |
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date | Sun, 03 Aug 2008 00:52:14 +0200 |
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/******************************************************************************* * Copyright (c) 2000, 2005 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 dwtx.draw2d.ConnectionAnchorBase; import dwt.dwthelper.utils; import dwtx.dwtxhelper.Collection; import dwtx.draw2d.ConnectionAnchor; import dwtx.draw2d.AnchorListener; /** * Provides support for a ConnectionAnchor. A ConnectionAnchor is one of the end points * of a {@link Connection}. It holds listeners and notifies them if the anchor is moved. */ public abstract class ConnectionAnchorBase : ConnectionAnchor { /** * The list of listeners */ protected List listeners; this(){ listeners = new ArrayList(1); } /** * @see dwtx.draw2d.ConnectionAnchor#addAnchorListener(AnchorListener) */ public void addAnchorListener(AnchorListener listener) { listeners.add(cast(Object)listener); } /** * @see dwtx.draw2d.ConnectionAnchor#removeAnchorListener(AnchorListener) */ public void removeAnchorListener(AnchorListener listener) { listeners.remove(cast(Object)listener); } /** * Notifies all the listeners in the list of a change in position of this anchor. This is * called from one of the implementing anchors when its location is changed. * * @since 2.0 */ protected void fireAnchorMoved() { Iterator iter = listeners.iterator(); while (iter.hasNext()) (cast(AnchorListener)iter.next()).anchorMoved(this); } }