0N/A/*
2362N/A * Copyright (c) 2000, 2002, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/Apackage javax.swing.plaf.basic;
0N/A
0N/Aimport java.io.*;
0N/Aimport java.awt.datatransfer.*;
0N/Aimport javax.swing.plaf.UIResource;
0N/A
0N/A/**
0N/A * A transferable implementation for the default data transfer of some Swing
0N/A * components.
0N/A *
0N/A * @author Timothy Prinzing
0N/A */
0N/Aclass BasicTransferable implements Transferable, UIResource {
0N/A
0N/A protected String plainData;
0N/A protected String htmlData;
0N/A
0N/A private static DataFlavor[] htmlFlavors;
0N/A private static DataFlavor[] stringFlavors;
0N/A private static DataFlavor[] plainFlavors;
0N/A
0N/A static {
0N/A try {
0N/A htmlFlavors = new DataFlavor[3];
0N/A htmlFlavors[0] = new DataFlavor("text/html;class=java.lang.String");
0N/A htmlFlavors[1] = new DataFlavor("text/html;class=java.io.Reader");
0N/A htmlFlavors[2] = new DataFlavor("text/html;charset=unicode;class=java.io.InputStream");
0N/A
0N/A plainFlavors = new DataFlavor[3];
0N/A plainFlavors[0] = new DataFlavor("text/plain;class=java.lang.String");
0N/A plainFlavors[1] = new DataFlavor("text/plain;class=java.io.Reader");
0N/A plainFlavors[2] = new DataFlavor("text/plain;charset=unicode;class=java.io.InputStream");
0N/A
0N/A stringFlavors = new DataFlavor[2];
0N/A stringFlavors[0] = new DataFlavor(DataFlavor.javaJVMLocalObjectMimeType+";class=java.lang.String");
0N/A stringFlavors[1] = DataFlavor.stringFlavor;
0N/A
0N/A } catch (ClassNotFoundException cle) {
0N/A System.err.println("error initializing javax.swing.plaf.basic.BasicTranserable");
0N/A }
0N/A }
0N/A
0N/A public BasicTransferable(String plainData, String htmlData) {
0N/A this.plainData = plainData;
0N/A this.htmlData = htmlData;
0N/A }
0N/A
0N/A
0N/A /**
0N/A * Returns an array of DataFlavor objects indicating the flavors the data
0N/A * can be provided in. The array should be ordered according to preference
0N/A * for providing the data (from most richly descriptive to least descriptive).
0N/A * @return an array of data flavors in which this data can be transferred
0N/A */
0N/A public DataFlavor[] getTransferDataFlavors() {
0N/A DataFlavor[] richerFlavors = getRicherFlavors();
0N/A int nRicher = (richerFlavors != null) ? richerFlavors.length : 0;
0N/A int nHTML = (isHTMLSupported()) ? htmlFlavors.length : 0;
0N/A int nPlain = (isPlainSupported()) ? plainFlavors.length: 0;
0N/A int nString = (isPlainSupported()) ? stringFlavors.length : 0;
0N/A int nFlavors = nRicher + nHTML + nPlain + nString;
0N/A DataFlavor[] flavors = new DataFlavor[nFlavors];
0N/A
0N/A // fill in the array
0N/A int nDone = 0;
0N/A if (nRicher > 0) {
0N/A System.arraycopy(richerFlavors, 0, flavors, nDone, nRicher);
0N/A nDone += nRicher;
0N/A }
0N/A if (nHTML > 0) {
0N/A System.arraycopy(htmlFlavors, 0, flavors, nDone, nHTML);
0N/A nDone += nHTML;
0N/A }
0N/A if (nPlain > 0) {
0N/A System.arraycopy(plainFlavors, 0, flavors, nDone, nPlain);
0N/A nDone += nPlain;
0N/A }
0N/A if (nString > 0) {
0N/A System.arraycopy(stringFlavors, 0, flavors, nDone, nString);
0N/A nDone += nString;
0N/A }
0N/A return flavors;
0N/A }
0N/A
0N/A /**
0N/A * Returns whether or not the specified data flavor is supported for
0N/A * this object.
0N/A * @param flavor the requested flavor for the data
0N/A * @return boolean indicating whether or not the data flavor is supported
0N/A */
0N/A public boolean isDataFlavorSupported(DataFlavor flavor) {
0N/A DataFlavor[] flavors = getTransferDataFlavors();
0N/A for (int i = 0; i < flavors.length; i++) {
0N/A if (flavors[i].equals(flavor)) {
0N/A return true;
0N/A }
0N/A }
0N/A return false;
0N/A }
0N/A
0N/A /**
0N/A * Returns an object which represents the data to be transferred. The class
0N/A * of the object returned is defined by the representation class of the flavor.
0N/A *
0N/A * @param flavor the requested flavor for the data
0N/A * @see DataFlavor#getRepresentationClass
0N/A * @exception IOException if the data is no longer available
0N/A * in the requested flavor.
0N/A * @exception UnsupportedFlavorException if the requested data flavor is
0N/A * not supported.
0N/A */
0N/A public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
0N/A DataFlavor[] richerFlavors = getRicherFlavors();
0N/A if (isRicherFlavor(flavor)) {
0N/A return getRicherData(flavor);
0N/A } else if (isHTMLFlavor(flavor)) {
0N/A String data = getHTMLData();
0N/A data = (data == null) ? "" : data;
0N/A if (String.class.equals(flavor.getRepresentationClass())) {
0N/A return data;
0N/A } else if (Reader.class.equals(flavor.getRepresentationClass())) {
0N/A return new StringReader(data);
0N/A } else if (InputStream.class.equals(flavor.getRepresentationClass())) {
0N/A return new StringBufferInputStream(data);
0N/A }
0N/A // fall through to unsupported
0N/A } else if (isPlainFlavor(flavor)) {
0N/A String data = getPlainData();
0N/A data = (data == null) ? "" : data;
0N/A if (String.class.equals(flavor.getRepresentationClass())) {
0N/A return data;
0N/A } else if (Reader.class.equals(flavor.getRepresentationClass())) {
0N/A return new StringReader(data);
0N/A } else if (InputStream.class.equals(flavor.getRepresentationClass())) {
0N/A return new StringBufferInputStream(data);
0N/A }
0N/A // fall through to unsupported
0N/A
0N/A } else if (isStringFlavor(flavor)) {
0N/A String data = getPlainData();
0N/A data = (data == null) ? "" : data;
0N/A return data;
0N/A }
0N/A throw new UnsupportedFlavorException(flavor);
0N/A }
0N/A
0N/A // --- richer subclass flavors ----------------------------------------------
0N/A
0N/A protected boolean isRicherFlavor(DataFlavor flavor) {
0N/A DataFlavor[] richerFlavors = getRicherFlavors();
0N/A int nFlavors = (richerFlavors != null) ? richerFlavors.length : 0;
0N/A for (int i = 0; i < nFlavors; i++) {
0N/A if (richerFlavors[i].equals(flavor)) {
0N/A return true;
0N/A }
0N/A }
0N/A return false;
0N/A }
0N/A
0N/A /**
0N/A * Some subclasses will have flavors that are more descriptive than HTML
0N/A * or plain text. If this method returns a non-null value, it will be
0N/A * placed at the start of the array of supported flavors.
0N/A */
0N/A protected DataFlavor[] getRicherFlavors() {
0N/A return null;
0N/A }
0N/A
0N/A protected Object getRicherData(DataFlavor flavor) throws UnsupportedFlavorException {
0N/A return null;
0N/A }
0N/A
0N/A // --- html flavors ----------------------------------------------------------
0N/A
0N/A /**
0N/A * Returns whether or not the specified data flavor is an HTML flavor that
0N/A * is supported.
0N/A * @param flavor the requested flavor for the data
0N/A * @return boolean indicating whether or not the data flavor is supported
0N/A */
0N/A protected boolean isHTMLFlavor(DataFlavor flavor) {
0N/A DataFlavor[] flavors = htmlFlavors;
0N/A for (int i = 0; i < flavors.length; i++) {
0N/A if (flavors[i].equals(flavor)) {
0N/A return true;
0N/A }
0N/A }
0N/A return false;
0N/A }
0N/A
0N/A /**
0N/A * Should the HTML flavors be offered? If so, the method
0N/A * getHTMLData should be implemented to provide something reasonable.
0N/A */
0N/A protected boolean isHTMLSupported() {
0N/A return htmlData != null;
0N/A }
0N/A
0N/A /**
0N/A * Fetch the data in a text/html format
0N/A */
0N/A protected String getHTMLData() {
0N/A return htmlData;
0N/A }
0N/A
0N/A // --- plain text flavors ----------------------------------------------------
0N/A
0N/A /**
0N/A * Returns whether or not the specified data flavor is an plain flavor that
0N/A * is supported.
0N/A * @param flavor the requested flavor for the data
0N/A * @return boolean indicating whether or not the data flavor is supported
0N/A */
0N/A protected boolean isPlainFlavor(DataFlavor flavor) {
0N/A DataFlavor[] flavors = plainFlavors;
0N/A for (int i = 0; i < flavors.length; i++) {
0N/A if (flavors[i].equals(flavor)) {
0N/A return true;
0N/A }
0N/A }
0N/A return false;
0N/A }
0N/A
0N/A /**
0N/A * Should the plain text flavors be offered? If so, the method
0N/A * getPlainData should be implemented to provide something reasonable.
0N/A */
0N/A protected boolean isPlainSupported() {
0N/A return plainData != null;
0N/A }
0N/A
0N/A /**
0N/A * Fetch the data in a text/plain format.
0N/A */
0N/A protected String getPlainData() {
0N/A return plainData;
0N/A }
0N/A
0N/A // --- string flavorss --------------------------------------------------------
0N/A
0N/A /**
0N/A * Returns whether or not the specified data flavor is a String flavor that
0N/A * is supported.
0N/A * @param flavor the requested flavor for the data
0N/A * @return boolean indicating whether or not the data flavor is supported
0N/A */
0N/A protected boolean isStringFlavor(DataFlavor flavor) {
0N/A DataFlavor[] flavors = stringFlavors;
0N/A for (int i = 0; i < flavors.length; i++) {
0N/A if (flavors[i].equals(flavor)) {
0N/A return true;
0N/A }
0N/A }
0N/A return false;
0N/A }
0N/A
0N/A
0N/A}