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) {
}
}
}
