protected boolean processKeyBinding(
javax.swing.KeyStroke ks, java.awt.event.KeyEvent e, int condition, boolean pressed) {
// live search in current parent node
if ((Character.isLetterOrDigit(e.getKeyChar())) && ks.isOnKeyRelease()) {
char keyChar = e.getKeyChar();
// search term
String search = ("" + keyChar).toLowerCase();
// try to find node with matching searchterm plus the search before
int nextIndexMatching = getNextIndexMatching(cachedSearchKey + search);
// if we did not find anything, try to find search term only: restart!
if (nextIndexMatching < 0) {
nextIndexMatching = getNextIndexMatching(search);
cachedSearchKey = "";
}
// if we found a node, select it, make it visible and return true
if (nextIndexMatching >= 0) {
// store found treepath
cachedSearchKey = cachedSearchKey + search;
setSelectedIndex(nextIndexMatching);
return true;
}
cachedSearchKey = "";
return true;
}
return super.processKeyBinding(ks, e, condition, pressed);
}
/**
* This is hack. AWT doesn't allow to create KeyStroke with specified key code and key char
* simultaneously. Therefore we are using reflection.
*/
private static KeyStroke getKeyStrokeWithoutMouseModifiers(KeyStroke originalKeyStroke) {
int modifier =
originalKeyStroke.getModifiers()
& ~InputEvent.BUTTON1_DOWN_MASK
& ~InputEvent.BUTTON1_MASK
& ~InputEvent.BUTTON2_DOWN_MASK
& ~InputEvent.BUTTON2_MASK
& ~InputEvent.BUTTON3_DOWN_MASK
& ~InputEvent.BUTTON3_MASK;
try {
Method[] methods = AWTKeyStroke.class.getDeclaredMethods();
Method getCachedStrokeMethod = null;
for (Method method : methods) {
if (GET_CACHED_STROKE_METHOD_NAME.equals(method.getName())) {
getCachedStrokeMethod = method;
getCachedStrokeMethod.setAccessible(true);
break;
}
}
if (getCachedStrokeMethod == null) {
throw new IllegalStateException("not found method with name getCachedStrokeMethod");
}
Object[] getCachedStrokeMethodArgs =
new Object[] {
originalKeyStroke.getKeyChar(),
originalKeyStroke.getKeyCode(),
modifier,
originalKeyStroke.isOnKeyRelease()
};
return (KeyStroke) getCachedStrokeMethod.invoke(originalKeyStroke, getCachedStrokeMethodArgs);
} catch (Exception exc) {
throw new IllegalStateException(exc.getMessage());
}
}
