// PSimpleIndenter has such a method but it's not exposed in the base class.
private boolean isBlockBegin(CharSequence lineToTheLeft) {
if (lineToTheLeft.length() == 0) {
return false;
}
char lastChar = lineToTheLeft.charAt(lineToTheLeft.length() - 1);
if (PBracketUtilities.isOpenBracket(lastChar) == false) {
return false;
}
char closeBracket = PBracketUtilities.getPartnerForBracket(lastChar);
if (textArea.getIndenter().isElectric(closeBracket) == false) {
return false;
}
return true;
}
public void insertNewline(boolean fixIndentation) {
textArea.getTextBuffer().getUndoBuffer().startCompoundEdit();
try {
final int startPosition = textArea.getSelectionStart();
CharSequence chars = textArea.getTextBuffer();
int startLineIndex = textArea.getLineOfOffset(startPosition);
int startLineStartOffset = textArea.getLineStartOffset(startLineIndex);
CharSequence lineToTheLeft = chars.subSequence(startLineStartOffset, startPosition);
if (isBlockBegin(lineToTheLeft) && insertMatchingBrackets()) {
return;
}
if (isUnclosedComment(chars, startPosition, lineToTheLeft)) {
insertMatchingCloseComment();
} else {
textArea.replaceSelection(
"\n" + textArea.getIndenter().getCurrentIndentationOfLine(startLineIndex));
if (textArea.getIndenter().canOnlyAutoIndent()) {
// The other indenters all get a chance to fix the current line's indentation before
// suggesting an auto-indent level for this line.
// It's possible that not differentiating between these two cases when calling the
// indenter is a design error.
// It's also possible that allowing this code to modify lines other than the
// newly-inserted line is a design error.
// We certainly make it annoyingly hard for the user to override us even when they want
// to, though maybe if our indenters were better no-one would care?
textArea.getIndenter().fixIndentation();
} else if (fixIndentation) {
textArea.getIndenter().fixIndentationOnLine(startLineIndex);
textArea.getIndenter().fixIndentation();
} else {
new PCopyingIndenter(textArea).fixIndentation();
}
}
} finally {
textArea.getTextBuffer().getUndoBuffer().finishCompoundEdit();
}
}