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