Mercurial > projects > dwt2
view org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Resource.d @ 0:6dd524f61e62
add dwt win and basic java stuff
author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 02 Mar 2009 14:44:16 +0100 |
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/******************************************************************************* * Copyright (c) 2000, 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: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module org.eclipse.swt.graphics.Resource; import org.eclipse.swt.SWT; import org.eclipse.swt.graphics.Device; /** * This class is the abstract superclass of all graphics resource objects. * Resources created by the application must be disposed. * <p> * IMPORTANT: This class is intended to be subclassed <em>only</em> * within the SWT implementation. However, it has not been marked * final to allow those outside of the SWT development team to implement * patched versions of the class in order to get around specific * limitations in advance of when those limitations can be addressed * by the team. Any class built using subclassing to access the internals * of this class will likely fail to compile or run between releases and * may be strongly platform specific. Subclassing should not be attempted * without an intimate and detailed understanding of the workings of the * hierarchy. No support is provided for user-written classes which are * implemented as subclasses of this class. * </p> * * @see #dispose * @see #isDisposed * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> * * @since 3.1 */ public abstract class Resource { /// SWT extension for D: do no dispose check public bool disposeChecking = true; /// SWT extension for D: do no dispose check public static bool globalDisposeChecking = true; /** * the device where this resource was created */ Device device; public this() { } this(Device device) { if (device is null) device = Device.getDevice(); if (device is null) SWT.error(SWT.ERROR_NULL_ARGUMENT); this.device = device; } ~this(){ if( globalDisposeChecking && disposeChecking && !isDisposed() ){ SWT.error( 0, null, " Resource deleted, but is not yet disposed. " "This check can be disabled with " "\"import org.eclipse.swt.graphics.Resource; " "Resource.globalDisposeChecking = false; \". " "This problem occured with type " ~ this.classinfo.name ~ " this.toString()=" ~ this.toString() ); } } void destroy() { } /** * Disposes of the operating system resources associated with * this resource. Applications must dispose of all resources * which they allocate. */ public void dispose() { if (device is null) return; if (device.isDisposed()) return; destroy(); if (device.tracking) device.dispose_Object(this); device = null; } /** * Returns the <code>Device</code> where this resource was * created. * * @return <code>Device</code> the device of the receiver * * @since 3.2 */ public Device getDevice() { Device device = this.device; if (device is null || isDisposed ()) SWT.error (SWT.ERROR_GRAPHIC_DISPOSED); return device; } void init_() { if (device.tracking) device.new_Object(this); } /** * Returns <code>true</code> if the resource has been disposed, * and <code>false</code> otherwise. * <p> * This method gets the dispose state for the resource. * When a resource has been disposed, it is an error to * invoke any other method using the resource. * * @return <code>true</code> when the resource is disposed and <code>false</code> otherwise */ public abstract bool isDisposed(); }