/**
* Gets the displayed value, and uses the converter to convert the shared value to units this
* instance is supposed to represent. If the displayed value and shared value are different,
* then we turn off our document filter and update our value to match the shared value. We
* re-enable the document filter afterwards.
*/
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
try {
StyledDocument doc = getStyledDocument();
double actualValue = (multiplier.getDisplayValue(value.getValue()));
String actualValueAsString = df.format(actualValue);
String displayedValue;
try {
displayedValue = doc.getText(0, doc.getLength());
} catch (BadLocationException e) {
displayedValue = "";
}
if (displayedValue.isEmpty()) {
displayedValue = "0";
}
double displayedValueAsDouble = Double.parseDouble(displayedValue);
if (!actualValueAsString.equals(displayedValue)
&& displayedValueAsDouble != actualValue) // Allow user to enter trailing zeroes.
{
bypassFilterAndSetText(doc, actualValueAsString);
}
} catch (NumberFormatException e) {
// Swallow it as it's OK for the user to try and enter non-numbers.
}
}
protected void bypassFilterAndSetText(StyledDocument doc, String text) {
try {
filter.setUpdateValue(false);
doc.remove(0, doc.getLength());
doc.insertString(0, text, null);
} catch (BadLocationException e) {
java.awt.Toolkit.getDefaultToolkit().beep();
} finally {
filter.setUpdateValue(true);
}
}
void editorPane_keyPressed(KeyEvent e) {
StyledDocument doc = editorPane.getStyledDocument();
int pos = editorPane.getCaretPosition();
int code = e.getKeyCode();
Element el;
switch (code) {
case KeyEvent.VK_BACK_SPACE:
case KeyEvent.VK_DELETE:
case KeyEvent.VK_LEFT:
case KeyEvent.VK_KP_LEFT:
if (pos == 0) return;
// we want to get the element to the left of position.
el = doc.getCharacterElement(pos - 1);
break;
case KeyEvent.VK_RIGHT:
case KeyEvent.VK_KP_RIGHT:
// we want to get the element to the right of position.
el = doc.getCharacterElement(pos + 1);
break;
default:
return; // bail we don't handle it.
}
AttributeSet attr = el.getAttributes();
String el_name = (String) attr.getAttribute(StyleConstants.NameAttribute);
int el_range = el.getEndOffset() - el.getStartOffset() - 1;
if (el_name.startsWith("Parameter") && StyleConstants.getComponent(attr) != null) {
try {
switch (code) {
case KeyEvent.VK_BACK_SPACE:
case KeyEvent.VK_DELETE:
doc.remove(el.getStartOffset(), el_range);
break;
case KeyEvent.VK_LEFT:
case KeyEvent.VK_KP_LEFT:
editorPane.setCaretPosition(pos - el_range);
break;
case KeyEvent.VK_RIGHT:
case KeyEvent.VK_KP_RIGHT:
editorPane.setCaretPosition(pos + (el_range));
break;
}
} catch (BadLocationException ex) {
}
}
}
private void insertParameter(ConfigParamDescr descr, String format, int pos) {
try {
StyledDocument doc = (StyledDocument) editorPane.getDocument();
// The component must first be wrapped in a style
Style style = doc.addStyle("Parameter-" + numParameters, null);
JLabel label = new JLabel(descr.getDisplayName());
label.setAlignmentY(0.8f); // make sure we line up
label.setFont(new Font("Helvetica", Font.PLAIN, 14));
label.setForeground(Color.BLUE);
label.setName(descr.getKey());
label.setToolTipText("key: " + descr.getKey() + " format: " + format);
StyleConstants.setComponent(style, label);
doc.insertString(pos, format, style);
numParameters++;
} catch (BadLocationException e) {
}
}