Mercurial > projects > dwt2
diff 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> |
---|---|
date | Mon, 02 Mar 2009 14:44:16 +0100 |
parents | |
children |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/graphics/Resource.d Mon Mar 02 14:44:16 2009 +0100 @@ -0,0 +1,119 @@ +/******************************************************************************* + * 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(); + +}