Mercurial > projects > dwt-addons
annotate dwtx/jface/util/LocalSelectionTransfer.d @ 43:ea8ff534f622
Fix override and super aliases
| author | Frank Benoit <benoit@tionex.de> |
|---|---|
| date | Fri, 11 Apr 2008 01:24:25 +0200 |
| parents | 51d06982c550 |
| children |
| rev | line source |
|---|---|
| 31 | 1 /******************************************************************************* |
| 2 * Copyright (c) 2005, 2006 IBM Corporation and others. | |
| 3 * All rights reserved. This program and the accompanying materials | |
| 4 * are made available under the terms of the Eclipse Public License v1.0 | |
| 5 * which accompanies this distribution, and is available at | |
| 6 * http://www.eclipse.org/legal/epl-v10.html | |
| 7 * | |
| 8 * Contributors: | |
| 9 * IBM Corporation - initial API and implementation | |
| 10 * Port to the D programming language: | |
| 11 * Frank Benoit <benoit@tionex.de> | |
| 12 *******************************************************************************/ | |
| 13 module dwtx.jface.util.LocalSelectionTransfer; | |
| 14 | |
| 15 import dwtx.jface.util.Policy; | |
| 16 | |
| 17 import dwt.dnd.ByteArrayTransfer; | |
| 18 import dwt.dnd.TransferData; | |
| 19 import dwtx.core.runtime.IStatus; | |
| 20 import dwtx.core.runtime.Status; | |
| 21 import dwtx.jface.resource.JFaceResources; | |
| 22 import dwtx.jface.viewers.ISelection; | |
| 23 | |
| 24 import dwt.dwthelper.utils; | |
| 25 import tango.text.convert.Format; | |
| 26 | |
| 27 /** | |
| 28 * A LocalSelectionTransfer may be used for drag and drop operations | |
| 29 * within the same instance of Eclipse. | |
| 30 * The selection is made available directly for use in the DropTargetListener. | |
| 31 * dropAccept method. The DropTargetEvent passed to dropAccept does not contain | |
| 32 * the drop data. The selection may be used for validation purposes so that the | |
| 33 * drop can be aborted if appropriate. | |
| 34 * | |
| 35 * This class is not intended to be subclassed. | |
| 36 * | |
| 37 * @since 3.2 | |
| 38 */ | |
| 39 public class LocalSelectionTransfer : ByteArrayTransfer { | |
| 40 | |
| 41 // First attempt to create a UUID for the type name to make sure that | |
| 42 // different Eclipse applications use different "types" of | |
| 43 // <code>LocalSelectionTransfer</code> | |
| 44 private static const String TYPE_NAME; | |
| 45 | |
| 46 private static const int TYPEID; | |
| 47 | |
| 48 private static const LocalSelectionTransfer INSTANCE; | |
| 49 | |
| 50 private ISelection selection; | |
| 51 | |
| 52 private long selectionSetTime; | |
| 53 | |
| 54 static this(){ | |
| 55 TYPE_NAME = Format("local-selection-transfer-format{}", System.currentTimeMillis()); //$NON-NLS-1$; | |
| 56 TYPEID = registerType(TYPE_NAME); | |
| 57 INSTANCE = new LocalSelectionTransfer(); | |
| 58 } | |
| 59 | |
| 60 /** | |
| 61 * Only the singleton instance of this class may be used. | |
| 62 */ | |
| 63 protected this() { | |
| 64 // do nothing | |
| 65 } | |
| 66 | |
| 67 /** | |
| 68 * Returns the singleton. | |
| 69 * | |
| 70 * @return the singleton | |
| 71 */ | |
| 72 public static LocalSelectionTransfer getTransfer() { | |
| 73 return INSTANCE; | |
| 74 } | |
| 75 | |
| 76 /** | |
| 77 * Returns the local transfer data. | |
| 78 * | |
| 79 * @return the local transfer data | |
| 80 */ | |
| 81 public ISelection getSelection() { | |
| 82 return selection; | |
| 83 } | |
| 84 | |
| 85 /** | |
| 86 * Tests whether native drop data matches this transfer type. | |
| 87 * | |
| 88 * @param result result of converting the native drop data to Java | |
| 89 * @return true if the native drop data does not match this transfer type. | |
| 90 * false otherwise. | |
| 91 */ | |
| 92 private bool isInvalidNativeType(Object result) { | |
| 93 return !(cast(ArrayWrapperByte)result ) | |
| 94 || !TYPE_NAME.equals(cast(char[])(cast(ArrayWrapperByte) result).array); | |
| 95 } | |
| 96 | |
| 97 /** | |
| 98 * Returns the type id used to identify this transfer. | |
| 99 * | |
| 100 * @return the type id used to identify this transfer. | |
| 101 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
102 protected override int[] getTypeIds() { |
| 31 | 103 return [ TYPEID ]; |
| 104 } | |
| 105 | |
| 106 /** | |
| 107 * Returns the type name used to identify this transfer. | |
| 108 * | |
| 109 * @return the type name used to identify this transfer. | |
| 110 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
111 protected override String[] getTypeNames() { |
| 31 | 112 return [ TYPE_NAME ]; |
| 113 } | |
| 114 | |
| 115 /** | |
| 116 * Overrides dwt.dnd.ByteArrayTransfer#javaToNative(Object, | |
| 117 * TransferData). | |
| 118 * Only encode the transfer type name since the selection is read and | |
| 119 * written in the same process. | |
| 120 * | |
| 121 * @see dwt.dnd.ByteArrayTransfer#javaToNative(java.lang.Object, dwt.dnd.TransferData) | |
| 122 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
123 public override void javaToNative(Object object, TransferData transferData) { |
| 31 | 124 auto check = new ArrayWrapperByte( cast(byte[])TYPE_NAME ); |
| 125 super.javaToNative(check, transferData); | |
| 126 } | |
| 127 | |
| 128 /** | |
| 129 * Overrides dwt.dnd.ByteArrayTransfer#nativeToJava(TransferData). | |
| 130 * Test if the native drop data matches this transfer type. | |
| 131 * | |
| 132 * @see dwt.dnd.ByteArrayTransfer#nativeToJava(TransferData) | |
| 133 */ | |
|
43
ea8ff534f622
Fix override and super aliases
Frank Benoit <benoit@tionex.de>
parents:
31
diff
changeset
|
134 public override Object nativeToJava(TransferData transferData) { |
| 31 | 135 Object result = super.nativeToJava(transferData); |
| 136 if (isInvalidNativeType(result)) { | |
| 137 Policy.getLog().log(new Status( | |
| 138 IStatus.ERROR, | |
| 139 Policy.JFACE, | |
| 140 IStatus.ERROR, | |
| 141 JFaceResources.getString("LocalSelectionTransfer.errorMessage"), null)); //$NON-NLS-1$ | |
| 142 } | |
| 143 return cast(Object) selection; | |
| 144 } | |
| 145 | |
| 146 /** | |
| 147 * Sets the transfer data for local use. | |
| 148 * | |
| 149 * @param s the transfer data | |
| 150 */ | |
| 151 public void setSelection(ISelection s) { | |
| 152 selection = s; | |
| 153 } | |
| 154 | |
| 155 /** | |
| 156 * Returns the time when the selection operation | |
| 157 * this transfer is associated with was started. | |
| 158 * | |
| 159 * @return the time when the selection operation has started | |
| 160 * | |
| 161 * @see dwt.events.TypedEvent#time | |
| 162 */ | |
| 163 public long getSelectionSetTime() { | |
| 164 return selectionSetTime; | |
| 165 } | |
| 166 | |
| 167 /** | |
| 168 * Sets the time when the selection operation this | |
| 169 * transfer is associated with was started. | |
| 170 * If assigning this from an DWT event, be sure to use | |
| 171 * <code>setSelectionTime(event.time & 0xFFFF)</code> | |
| 172 * | |
| 173 * @param time the time when the selection operation was started | |
| 174 * | |
| 175 * @see dwt.events.TypedEvent#time | |
| 176 */ | |
| 177 public void setSelectionSetTime(long time) { | |
| 178 selectionSetTime = time; | |
| 179 } | |
| 180 } |