/**
* 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.
*/
@Override
public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException {
Transferable t = (Transferable) transferables.get(flavor);
if (t == null) {
throw new UnsupportedFlavorException(flavor);
}
return t.getTransferData(flavor);
}
public void drop(DropTargetDropEvent dtde) {
dtde.acceptDrop(DnDConstants.ACTION_COPY);
DataFlavor[] flavors = null;
try {
Transferable t = dtde.getTransferable();
iterator = null;
flavors = t.getTransferDataFlavors();
if (IJ.debugMode) IJ.log("DragAndDrop.drop: " + flavors.length + " flavors");
for (int i = 0; i < flavors.length; i++) {
if (IJ.debugMode) IJ.log(" flavor[" + i + "]: " + flavors[i].getMimeType());
if (flavors[i].isFlavorJavaFileListType()) {
Object data = t.getTransferData(DataFlavor.javaFileListFlavor);
iterator = ((List) data).iterator();
break;
} else if (flavors[i].isFlavorTextType()) {
Object ob = t.getTransferData(flavors[i]);
if (!(ob instanceof String)) continue;
String s = ob.toString().trim();
if (IJ.isLinux() && s.length() > 1 && (int) s.charAt(1) == 0) s = fixLinuxString(s);
ArrayList list = new ArrayList();
if (s.indexOf("href=\"") != -1 || s.indexOf("src=\"") != -1) {
s = parseHTML(s);
if (IJ.debugMode) IJ.log(" url: " + s);
list.add(s);
this.iterator = list.iterator();
break;
}
BufferedReader br = new BufferedReader(new StringReader(s));
String tmp;
while (null != (tmp = br.readLine())) {
tmp = java.net.URLDecoder.decode(tmp.replaceAll("\\+", "%2b"), "UTF-8");
if (tmp.startsWith("file://")) tmp = tmp.substring(7);
if (IJ.debugMode) IJ.log(" content: " + tmp);
if (tmp.startsWith("http://")) list.add(s);
else list.add(new File(tmp));
}
this.iterator = list.iterator();
break;
}
}
if (iterator != null) {
Thread thread = new Thread(this, "DrawAndDrop");
thread.setPriority(Math.max(thread.getPriority() - 1, Thread.MIN_PRIORITY));
thread.start();
}
} catch (Exception e) {
dtde.dropComplete(false);
return;
}
dtde.dropComplete(true);
if (flavors == null || flavors.length == 0) {
if (IJ.isMacOSX())
IJ.error(
"First drag and drop ignored. Please try again. You can avoid this\n"
+ "problem by dragging to the toolbar instead of the status bar.");
else IJ.error("Drag and drop failed");
}
}
/**
* Returns the contents of the specified transferable.
*
* @param tr transferable
* @return contents
*/
@SuppressWarnings("unchecked")
public static ArrayList<Object> contents(final Transferable tr) {
final ArrayList<Object> list = new ArrayList<>();
try {
if (tr.isDataFlavorSupported(DataFlavor.javaFileListFlavor)) {
for (final File fl : (List<File>) tr.getTransferData(DataFlavor.javaFileListFlavor))
list.add(fl);
} else if (tr.isDataFlavorSupported(DataFlavor.stringFlavor)) {
list.add(tr.getTransferData(DataFlavor.stringFlavor));
}
} catch (final Exception ex) {
Util.stack(ex);
}
return list;
}
public void add(Transferable t) {
DataFlavor[] f = t.getTransferDataFlavors();
for (int i = 0; i < f.length; i++) {
if (!transferables.containsKey(f[i])) {
flavors.add(f[i]);
}
transferables.put(f[i], t);
}
}
/**
* Gets a Reader for a text flavor, decoded, if necessary, for the expected charset (encoding).
* The supported representation classes are <code>java.io.Reader</code>, <code>java.lang.String
* </code>, <code>java.nio.CharBuffer</code>, <code>[C</code>, <code>java.io.InputStream</code>,
* <code>java.nio.ByteBuffer</code>, and <code>[B</code>.
*
* <p>Because text flavors which do not support the charset parameter are encoded in a
* non-standard format, this method should not be called for such flavors. However, in order to
* maintain backward-compatibility, if this method is called for such a flavor, this method will
* treat the flavor as though it supports the charset parameter and attempt to decode it
* accordingly. See <code>selectBestTextFlavor</code> for a list of text flavors which do not
* support the charset parameter.
*
* @param transferable the <code>Transferable</code> whose data will be requested in this flavor
* @return a <code>Reader</code> to read the <code>Transferable</code>'s data
* @exception IllegalArgumentException if the representation class is not one of the seven listed
* above
* @exception IllegalArgumentException if the <code>Transferable</code> has <code>null</code> data
* @exception NullPointerException if the <code>Transferable</code> is <code>null</code>
* @exception UnsupportedEncodingException if this flavor's representation is <code>
* java.io.InputStream</code>, <code>java.nio.ByteBuffer</code>, or <code>[B</code> and this
* flavor's encoding is not supported by this implementation of the Java platform
* @exception UnsupportedFlavorException if the <code>Transferable</code> does not support this
* flavor
* @exception IOException if the data cannot be read because of an I/O error
* @see #selectBestTextFlavor
* @since 1.3
*/
public Reader getReaderForText(Transferable transferable)
throws UnsupportedFlavorException, IOException {
Object transferObject = transferable.getTransferData(this);
if (transferObject == null) {
throw new IllegalArgumentException("getTransferData() returned null");
}
if (transferObject instanceof Reader) {
return (Reader) transferObject;
} else if (transferObject instanceof String) {
return new StringReader((String) transferObject);
} else if (transferObject instanceof CharBuffer) {
CharBuffer buffer = (CharBuffer) transferObject;
int size = buffer.remaining();
char[] chars = new char[size];
buffer.get(chars, 0, size);
return new CharArrayReader(chars);
} else if (transferObject instanceof char[]) {
return new CharArrayReader((char[]) transferObject);
}
InputStream stream = null;
if (transferObject instanceof InputStream) {
stream = (InputStream) transferObject;
} else if (transferObject instanceof ByteBuffer) {
ByteBuffer buffer = (ByteBuffer) transferObject;
int size = buffer.remaining();
byte[] bytes = new byte[size];
buffer.get(bytes, 0, size);
stream = new ByteArrayInputStream(bytes);
} else if (transferObject instanceof byte[]) {
stream = new ByteArrayInputStream((byte[]) transferObject);
}
if (stream == null) {
throw new IllegalArgumentException(
"transfer data is not Reader, String, CharBuffer, char array, InputStream, ByteBuffer, or byte array");
}
String encoding = getParameter("charset");
return (encoding == null)
? new InputStreamReader(stream)
: new InputStreamReader(stream, encoding);
}
/**
* Paste the contents of the clipboard into the console buffer
*
* @return true if clipboard contents pasted
*/
public boolean paste() throws IOException {
Clipboard clipboard;
try { // May throw ugly exception on system without X
clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
} catch (Exception e) {
return false;
}
if (clipboard == null) {
return false;
}
Transferable transferable = clipboard.getContents(null);
if (transferable == null) {
return false;
}
try {
Object content = transferable.getTransferData(DataFlavor.plainTextFlavor);
/*
* This fix was suggested in bug #1060649 at
* http://sourceforge.net/tracker/index.php?func=detail&aid=1060649&group_id=64033&atid=506056
* to get around the deprecated DataFlavor.plainTextFlavor, but it
* raises a UnsupportedFlavorException on Mac OS X
*/
if (content == null) {
try {
content = new DataFlavor().getReaderForText(transferable);
} catch (Exception e) {
}
}
if (content == null) {
return false;
}
String value;
if (content instanceof Reader) {
// TODO: we might want instead connect to the input stream
// so we can interpret individual lines
value = "";
String line = null;
for (BufferedReader read = new BufferedReader((Reader) content);
(line = read.readLine()) != null; ) {
if (value.length() > 0) {
value += "\n";
}
value += line;
}
} else {
value = content.toString();
}
if (value == null) {
return true;
}
putString(value);
return true;
} catch (UnsupportedFlavorException ufe) {
if (debugger != null) debug(ufe + "");
return false;
}
}