private void setText(String text) {
try {
// remove all text and insert the completed string
super.remove(0, getLength());
super.insertString(0, text, null);
} catch (BadLocationException e) {
throw new RuntimeException(e.toString());
}
}
public void insertString(int offs, String str, AttributeSet a) throws BadLocationException {
// return immediately when selecting an item
if (selecting) {
return;
}
// insert the string into the document
super.insertString(offs, str, a);
// lookup and select a matching item
Object item = lookupItem(getText(0, getLength()));
if (item != null) {
setSelectedItem(item);
} else {
// keep old item selected if there is no match
item = comboBox.getSelectedItem();
// imitate no insert (later on offs will be incremented by str.length(): selection won't move
// forward)
offs = offs - str.length();
// provide feedback to the user that his input has been received but can not be accepted
comboBox
.getToolkit()
.beep(); // when available use: UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
}
setText(item.toString());
// select the completed part
highlightCompletedText(offs + str.length());
}
@Override
public void insertString(final int offs, final String str, final AttributeSet a)
throws BadLocationException {
// NavigatorLogger.printMessage("Offset:"+offs+" STr:"+str+"L:"+getLength()+"attr:"+a);
if ((getLength() + str.length()) <= maxLength) {
final char[] source = str.toCharArray();
final char[] result = new char[source.length];
int j = 0;
for (int i = 0; i < result.length; i++) {
if (Character.isDigit(source[i])) {
result[j++] = source[i];
} else {
toolkit.beep();
if (log.isDebugEnabled()) {
log.debug("insertString: " + source[i]); // NOI18N
}
}
}
super.insertString(offs, new String(result, 0, j), a);
checked = false;
} else {
toolkit.beep();
}
if ((getLength()) == maxLength) { // getLength() ist schon aktualisiert
if (bringFocus2Next == true) {
checked = true;
nextField.requestFocus();
}
// NavigatorLogger.printMessage("Sprung");
// NavigatorLogger.printMessage(nextField);
}
}
public void remove(int offs, int len) throws BadLocationException {
// return immediately when selecting an item
if (selecting) {
return;
}
if (hitBackspace) {
// user hit backspace => move the selection backwards
// old item keeps being selected
if (offs > 0) {
if (hitBackspaceOnSelection) {
offs--;
}
} else {
// User hit backspace with the cursor positioned on the start => beep
comboBox.getToolkit().beep(); // when available use:
// UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
}
highlightCompletedText(offs);
} else {
super.remove(offs, len);
}
}
@Override
protected Document createDefaultModel() {
PlainDocument d = (PlainDocument) super.createDefaultModel();
d.setDocumentFilter(
new DocumentFilter() {
@Override
public void insertString(FilterBypass fb, int offset, String string, AttributeSet attr)
throws BadLocationException {
replace(fb, offset, 0, string, attr);
}
@Override
public void remove(FilterBypass fb, int offset, int length) throws BadLocationException {
replace(fb, offset, length, "", null);
}
@Override
public void replace(
FilterBypass fb, int replOffset, int replLen, String string, AttributeSet attrs)
throws BadLocationException {
String s = JMathTextField.this.getText();
boolean insertedDummyChar = false;
boolean insertedBrackets = false;
String replStr = s.substring(replOffset, replOffset + replLen);
if (string.matches(" |\\)")
&& replOffset + 1 <= s.length()
&& s.substring(replOffset, replOffset + 1).equals(string)) {
JMathTextField.this.setCaretPosition(replOffset + 1);
return;
}
if (string.isEmpty() && replStr.equals(" ")) {
JMathTextField.this.setCaretPosition(replOffset);
return;
}
string = string.replace(" ", "");
if (string.isEmpty() && replStr.equals("(")) {
int count = 1;
while (replOffset + replLen < s.length()) {
replLen++;
replStr =
s.substring(
replOffset,
replOffset + replLen); // just update in case we need it later again
if (replStr.charAt(0) == '(') count++;
else if (replStr.charAt(0) == ')') count--;
if (count == 0) break;
}
} else if (string.isEmpty() && replStr.equals(")")) {
int count = -1;
while (replOffset > 0) {
replOffset--;
replLen++;
replStr = s.substring(replOffset, replOffset + replLen);
if (replStr.charAt(0) == '(') count++;
else if (replStr.charAt(0) == ')') count--;
if (count == 0) break;
}
}
if (string.matches("\\+|-|\\*|/|\\^|=")) {
if (s.substring(replOffset + replLen).matches("( *(\\+|-|∙|/|\\^|=|\\)).*)|")) {
string = string + "_";
insertedDummyChar = true;
} else if (s.substring(replOffset + replLen).matches(" .*")) {
string = "_" + string;
insertedDummyChar = true;
}
} else if (string.matches("\\(")) {
if (Utils.reveresedString(s.substring(0, replOffset))
.matches("( )*([^\\+\\-∙/\\^= ].*|)")
|| replStr.equals("_")) {
string = "(_)";
insertedDummyChar = true;
} else if (!replStr.isEmpty()) {
string = "(" + replStr + ")";
insertedBrackets = true;
} else return; // ignore this
} else if (string.matches("\\)")) return; // ignore that
// situation: A = B, press DEL -> make it A = _
if (string.isEmpty()
&& Utils.reveresedString(s.substring(0, replOffset))
.matches("( )*(\\+|-|∙|/|\\^|=).*")
&& !replStr.matches("_|\\+|-|∙|/|\\^|=")) {
string = "_";
insertedDummyChar = true;
} else if (string.isEmpty()
&& Utils.reveresedString(s.substring(0, replOffset))
.matches("( )*(\\+|-|∙|/|\\^|=).*")
&& replStr.equals("_")) {
while (s.substring(replOffset - 1, replOffset).equals(" ")) {
replOffset--;
replLen++;
}
replOffset--;
replLen++; // go just before the op
// just update in case we need it later again
// noinspection UnusedAssignment
replStr = s.substring(replOffset, replOffset + replLen);
}
setNewString(
fb, s.substring(0, replOffset) + string + s.substring(replOffset + replLen));
if (insertedDummyChar) {
int p = JMathTextField.this.getText().indexOf('_');
if (p >= 0) {
JMathTextField.this.setCaretPosition(p);
JMathTextField.this.moveCaretPosition(p + 1);
}
} else if (insertedBrackets) {
// move just before the ')'
if (JMathTextField.this.getCaretPosition() > 0)
JMathTextField.this.setCaretPosition(JMathTextField.this.getCaretPosition() - 1);
}
}
synchronized void setNewString(FilterBypass fb, String tempStr)
throws BadLocationException {
operatorTree = OTParser.parse(tempStr, null);
JMathTextField.this.updateByOpTree(fb);
}
});
return d;
}
public void insertString(int offset, String str, AttributeSet attSet)
throws BadLocationException {
if (upperCase) str = str.toUpperCase();
super.insertString(offset, str, attSet);
}
@Override
public void remove(final int offs, final int len) throws BadLocationException {
checked = false;
super.remove(offs, len);
}