| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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.*; |
| import org.eclipse.swt.internal.motif.*; |
| |
| /** |
| * The class <code>RTFTransfer</code> provides a platform specific mechanism |
| * for converting text in RTF format represented as a java <code>String</code> |
| * to a platform specific representation of the data and vice versa. |
| * |
| * <p>An example of a java <code>String</code> containing RTF text is shown |
| * below:</p> |
| * |
| * <code><pre> |
| * String rtfData = "{\\rtf1{\\colortbl;\\red255\\green0\\blue0;}\\uc1\\b\\i Hello World}"; |
| * </code></pre> |
| * |
| * @see Transfer |
| */ |
| public class RTFTransfer extends ByteArrayTransfer { |
| |
| static RTFTransfer _instance = new RTFTransfer(); |
| static final String TEXT_RTF = "text/rtf"; //$NON-NLS-1$ |
| static final int TEXT_RTF_ID = registerType(TEXT_RTF); |
| static final String TEXT_RTF2 = "TEXT/RTF"; //$NON-NLS-1$ |
| static final int TEXT_RTF2_ID = registerType(TEXT_RTF2); |
| static final String APPLICATION_RTF = "application/rtf"; //$NON-NLS-1$ |
| static final int APPLICATION_RTF_ID = registerType(APPLICATION_RTF); |
| |
| RTFTransfer() {/*empty*/} |
| |
| /** |
| * Returns the singleton instance of the RTFTransfer class. |
| * |
| * @return the singleton instance of the RTFTransfer class |
| */ |
| public static RTFTransfer getInstance () { |
| return _instance; |
| } |
| |
| /** |
| * This implementation of <code>javaToNative</code> converts RTF-formatted text |
| * represented by a java <code>String</code> to a platform specific representation. |
| * |
| * @param object a java <code>String</code> containing RTF text |
| * @param transferData an empty <code>TransferData</code> object that will |
| * be filled in on return with the platform specific format of the data |
| * |
| * @see Transfer#nativeToJava |
| */ |
| public void javaToNative (Object object, TransferData transferData){ |
| transferData.result = 0; |
| if (!checkRTF(object) || !isSupportedType(transferData)) { |
| DND.error(DND.ERROR_INVALID_DATA); |
| } |
| String string = (String)object; |
| byte [] buffer = Converter.wcsToMbcs (null, string, true); |
| int pValue = OS.XtMalloc(buffer.length); |
| if (pValue == 0) return; |
| OS.memmove(pValue, buffer, buffer.length); |
| transferData.length = buffer.length - 1; |
| transferData.format = 8; |
| transferData.pValue = pValue; |
| transferData.result = 1; |
| } |
| |
| /** |
| * This implementation of <code>nativeToJava</code> converts a platform specific |
| * representation of RTF text to a java <code>String</code>. |
| * |
| * @param transferData the platform specific representation of the data to be converted |
| * @return a java <code>String</code> containing RTF text if the conversion was successful; |
| * otherwise null |
| * |
| * @see Transfer#javaToNative |
| */ |
| public Object nativeToJava(TransferData transferData){ |
| if ( !isSupportedType(transferData) || transferData.pValue == 0 ) return null; |
| int size = transferData.format * transferData.length / 8; |
| if (size == 0) return null; |
| byte[] buffer = new byte[size]; |
| OS.memmove(buffer, transferData.pValue, size); |
| char [] chars = Converter.mbcsToWcs (null, buffer); |
| String string = new String (chars); |
| int end = string.indexOf('\0'); |
| return (end == -1) ? string : string.substring(0, end); |
| } |
| |
| protected int[] getTypeIds() { |
| return new int[] {TEXT_RTF_ID, TEXT_RTF2_ID, APPLICATION_RTF_ID}; |
| } |
| |
| protected String[] getTypeNames() { |
| return new String[] {TEXT_RTF, TEXT_RTF2, APPLICATION_RTF}; |
| } |
| |
| boolean checkRTF(Object object) { |
| return (object != null && object instanceof String && ((String)object).length() > 0); |
| } |
| |
| protected boolean validate(Object object) { |
| return checkRTF(object); |
| } |
| } |