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Added dwt-addons in original directory structure of eclipse.org
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:23:29 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 2004, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.resource.DeviceResourceManager;
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15 import org.eclipse.jface.resource.AbstractResourceManager;
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16 import org.eclipse.jface.resource.DeviceResourceDescriptor;
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17 import org.eclipse.jface.resource.ImageDescriptor;
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18
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19 import org.eclipse.swt.graphics.Device;
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20 import org.eclipse.swt.graphics.Image;
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21
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22 import java.lang.all;
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23
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24 /**
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25 * Manages SWT resources for a particular device.
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26 *
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27 * <p>
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28 * IMPORTANT: in most cases clients should use a <code>LocalResourceManager</code> instead of a
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29 * <code>DeviceResourceManager</code>. To create a resource manager on a particular display,
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30 * use <code>new LocalResourceManager(JFaceResources.getResources(myDisplay))</code>.
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31 * <code>DeviceResourceManager</code> should only be used directly when managing
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32 * resources for a device other than a Display (such as a printer).
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33 * </p>
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34 *
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35 * @see LocalResourceManager
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36 *
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37 * @since 3.1
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38 */
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39 public final class DeviceResourceManager : AbstractResourceManager {
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40
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41 private Device device;
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42 private Image missingImage;
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43
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44 /* (non-Javadoc)
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45 * @see org.eclipse.jface.resource.ResourceManager#getDevice()
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46 */
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47 public override Device getDevice() {
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48 return device;
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49 }
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50
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51 /**
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52 * Creates a new registry for the given device.
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53 *
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54 * @param device device to manage
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55 */
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56 public this(Device device) {
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57 this.device = device;
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58 }
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59
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60 /* (non-Javadoc)
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61 * @see org.eclipse.jface.resource.AbstractResourceManager#allocate(org.eclipse.jface.resource.DeviceResourceDescriptor)
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62 */
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63 protected override Object allocate(DeviceResourceDescriptor descriptor){
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64 return descriptor.createResource(device);
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65 }
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66
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67 /* (non-Javadoc)
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68 * @see org.eclipse.jface.resource.AbstractResourceManager#deallocate(java.lang.Object, org.eclipse.jface.resource.DeviceResourceDescriptor)
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69 */
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70 protected override void deallocate(Object resource, DeviceResourceDescriptor descriptor) {
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71 descriptor.destroyResource(resource);
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72 }
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73
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74 /* (non-Javadoc)
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75 * @see org.eclipse.jface.resource.ResourceManager#getDefaultImage()
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76 */
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77 protected override Image getDefaultImage() {
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78 if (missingImage is null) {
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79 missingImage = ImageDescriptor.getMissingImageDescriptor().createImage();
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80 }
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81 return missingImage;
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82 }
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83
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84 /* (non-Javadoc)
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85 * @see org.eclipse.jface.resource.AbstractResourceManager#dispose()
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86 */
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87 public override void dispose() {
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88 super.dispose();
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89 if (missingImage !is null) {
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90 missingImage.dispose();
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91 missingImage = null;
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92 }
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93 }
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94 }