int selectionStart = selectionModel.getSelectionStart();
int selectionEnd = selectionModel.getSelectionEnd();
final Document document = editor.getDocument();
final int textLength = document.getTextLength();
if (selectionModel.hasBlockSelection()) {
int[] blockStarts = selectionModel.getBlockSelectionStarts();
int[] blockEnds = selectionModel.getBlockSelectionEnds();
int plusOffset = 0;
for (int i = 0; i < blockStarts.length; i++) {
int blockStart = blockStarts[i];
int blockEnd = blockEnds[i];
if (blockStart == blockEnd) {
blockStart--;
blockEnd++;
}
if (blockStart<0 || blockEnd > textLength) {
continue;
}
String selectedText = document.getText(TextRange.create(blockStart, blockEnd));
String newTextPart = transform(selectedText);
document.replaceString(blockStart + plusOffset, blockEnd + plusOffset, newTextPart);
int realOldTextLength = blockEnd - blockStart;
plusOffset += newTextPart.length() - realOldTextLength;
}
} else {
String selectedText = selectionModel.getSelectedText();
if (selectedText == null) {
selectionStart = selectionStart - 1;
selectionEnd = selectionEnd + 1;
if (selectionStart<0 || selectionEnd > textLength) {
return;
}
selectedText = document.getText(TextRange.create(selectionStart, selectionEnd));
}
if (selectedText == null) {
return;
}
document.replaceString(selectionStart,
selectionEnd, transform(selectedText));
}
}
});
}