/** Import the given stream data into the text component. */
protected void handleReaderImport(Reader in, JTextComponent c)
throws BadLocationException, IOException {
char[] buff = new char[1024];
int nch;
boolean lastWasCR = false;
int last;
StringBuffer sbuff = null;
// Read in a block at a time, mapping \r\n to \n, as well as single
// \r to \n.
while ((nch = in.read(buff, 0, buff.length)) != -1) {
if (sbuff == null) {
sbuff = new StringBuffer(nch);
}
last = 0;
for (int counter = 0; counter < nch; counter++) {
switch (buff[counter]) {
case '\r':
if (lastWasCR) {
if (counter == 0) sbuff.append('\n');
else buff[counter - 1] = '\n';
} else lastWasCR = true;
break;
case '\n':
if (lastWasCR) {
if (counter > (last + 1)) sbuff.append(buff, last, counter - last - 1);
// else nothing to do, can skip \r, next write will
// write \n
lastWasCR = false;
last = counter;
}
break;
default:
if (lastWasCR) {
if (counter == 0) sbuff.append('\n');
else buff[counter - 1] = '\n';
lastWasCR = false;
}
break;
} // End fo switch (buff[counter]).
} // End of for (int counter = 0; counter < nch; counter++).
if (last < nch) {
if (lastWasCR) {
if (last < (nch - 1)) sbuff.append(buff, last, nch - last - 1);
} else sbuff.append(buff, last, nch - last);
}
} // End of while ((nch = in.read(buff, 0, buff.length)) != -1).
if (withinSameComponent) {
((RTextArea) c).beginAtomicEdit();
}
if (lastWasCR) sbuff.append('\n');
c.replaceSelection(sbuff != null ? sbuff.toString() : "");
}
/**
* This method is called after data has been exported. This method should remove the data that was
* transfered if the action was MOVE.
*
* @param source The component that was the source of the data.
* @param data The data that was transferred or possibly null if the action is <code>NONE</code>.
* @param action The actual action that was performed.
*/
protected void exportDone(JComponent source, Transferable data, int action) {
// only remove the text if shouldRemove has not been set to
// false by importData and only if the action is a move
if (shouldRemove && action == MOVE) {
TextTransferable t = (TextTransferable) data;
t.removeText();
if (withinSameComponent) {
((RTextArea) source).endAtomicEdit();
withinSameComponent = false;
}
}
exportComp = null;
}