| /******************************************************************************* |
| * Copyright (c) 2000, 2012 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 |
| *******************************************************************************/ |
| package org.eclipse.swt.dnd; |
| |
| import org.eclipse.swt.internal.ole.win32.*; |
| |
| /** |
| * The <code>TransferData</code> class is a platform specific data structure for |
| * describing the type and the contents of data being converted by a transfer agent. |
| * |
| * <p>As an application writer, you do not need to know the specifics of |
| * TransferData. TransferData instances are passed to a subclass of Transfer |
| * and the Transfer object manages the platform specific issues. |
| * You can ask a Transfer subclass if it can handle this data by calling |
| * Transfer.isSupportedType(transferData).</p> |
| * |
| * <p>You should only need to become familiar with the fields in this class if you |
| * are implementing a Transfer subclass and you are unable to subclass the |
| * ByteArrayTransfer class.</p> |
| * |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| public class TransferData { |
| /** |
| * The type is a unique identifier of a system format or user defined format. |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public int type; |
| |
| /** |
| * The formatetc structure is a generalized data transfer format, enhanced to |
| * encompass a target device, the aspect, or view of the data, and |
| * a storage medium. |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public FORMATETC formatetc; |
| |
| /** |
| * The stgmedium structure is a generalized global memory handle used for |
| * data transfer operations. |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public STGMEDIUM stgmedium; |
| |
| /** |
| * The result field contains the result of converting a |
| * java data type into a platform specific value. |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * <p>The value of result is 1 if the conversion was successful. |
| * The value of result is 0 if the conversion failed.</p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public int result = COM.E_FAIL; |
| |
| /** |
| * The pIDataObject is the address of an IDataObject OLE Interface which |
| * provides access to the data associated with the transfer. |
| * (Warning: This field is platform dependent) |
| * <p> |
| * <b>IMPORTANT:</b> This field is <em>not</em> part of the SWT |
| * public API. It is marked public only so that it can be shared |
| * within the packages provided by SWT. It is not available on all |
| * platforms and should never be accessed from application code. |
| * </p> |
| * |
| * @noreference This field is not intended to be referenced by clients. |
| */ |
| public long /*int*/ pIDataObject; |
| |
| static boolean sameType(TransferData data1, TransferData data2) { |
| if (data1 == data2) return true; |
| if (data1 == null || data2 == null) return false; |
| return (data1.type == data2.type && |
| data1.formatetc.cfFormat == data2.formatetc.cfFormat && |
| data1.formatetc.dwAspect == data2.formatetc.dwAspect && |
| data1.formatetc.tymed == data2.formatetc.tymed); |
| } |
| |
| } |