/** Eliminate redundant modifier keys surrounding keystrokes or keystrings. */
private void removeExtraModifiers() {
setStatus("Removing extra modifiers");
for (int i = 0; i < steps.size(); i++) {
Step step = (Step) steps.get(i);
if (isKey(step, ANY_KEY, PRESS)) {
Event se = (Event) step;
String cs = se.getAttribute(XMLConstants.TAG_KEYCODE);
int code = AWT.getKeyCode(cs);
boolean remove = false;
boolean foundKeyStroke = false;
if (AWT.isModifier(code)) {
for (int j = i + 1; j < steps.size(); j++) {
Step next = (Step) steps.get(j);
if (isKey(next, cs, RELEASE)) {
if (foundKeyStroke) {
steps.remove(j);
remove = true;
}
break;
} else if (isKeyStroke(next, ANY_KEY) || isKeyString(next)) {
foundKeyStroke = true;
remove = true;
} else if (!isKey(next, ANY_KEY, EITHER)) {
break;
}
}
}
if (remove) {
steps.remove(i--);
}
}
}
}
private boolean isKey(Step step, String code, int type) {
boolean match = false;
if (step instanceof Event) {
Event se = (Event) step;
match =
"KeyEvent".equals(se.getType())
&& (type == EITHER
|| (type == PRESS && "KEY_PRESSED".equals(se.getKind()))
|| (type == RELEASE && "KEY_RELEASED".equals(se.getKind())))
&& (code == ANY_KEY || code.equals(se.getAttribute(XMLConstants.TAG_KEYCODE)));
}
return match;
}
/** Eliminate redundant key press/release events surrounding a keytyped event. */
private void coalesceKeyEvents() {
setStatus("Coalescing key events");
for (int i = 0; i < steps.size(); i++) {
Step step = (Step) steps.get(i);
if (isKey(step, ANY_KEY, PRESS)) {
// In the case of modifiers, remove only if the presence of
// the key down/up is redundant.
Event se = (Event) step;
String cs = se.getAttribute(XMLConstants.TAG_KEYCODE);
int code = AWT.getKeyCode(cs);
// OSX option modifier should be ignored, since it is used to
// generate input method events.
boolean isOSXOption = Platform.isOSX() && code == KeyEvent.VK_ALT;
if (AWT.isModifier(code) && !isOSXOption) continue;
// In the case of non-modifier keys, walk the steps until we
// find the key release, then optionally replace the key press
// with a keystroke, or remove it if the keystroke was already
// recorded. This sorts out jumbled key press/release events.
boolean foundKeyStroke = false;
boolean foundRelease = false;
for (int j = i + 1; j < steps.size(); j++) {
Step next = (Step) steps.get(j);
// If we find the release, remove it and this
if (isKey(next, cs, RELEASE)) {
foundRelease = true;
String target = ((Event) next).getComponentID();
steps.remove(j);
steps.remove(i);
// Add a keystroke only if we didn't find any key
// input between press and release (except on OSX,
// where the option key generates input method events
// which aren't recorded).
if (!foundKeyStroke && !isOSXOption) {
String mods = se.getAttribute(XMLConstants.TAG_MODIFIERS);
String[] args =
(mods == null || "0".equals(mods)
? new String[] {target, cs}
: new String[] {target, cs, mods});
Step typed = new Action(getResolver(), null, "actionKeyStroke", args);
steps.add(i, typed);
setStatus("Insert artifical " + typed);
} else {
setStatus("Removed redundant key events (" + cs + ")");
--i;
}
break;
} else if (isKeyStroke(next, ANY_KEY) || isKeyString(next)) {
foundKeyStroke = true;
// If it's a numpad keycode, use the numpad
// keycode instead of the resulting numeric character
// keystroke.
if (cs.startsWith("VK_NUMPAD")) {
foundKeyStroke = false;
steps.remove(j--);
}
}
}
// We don't like standalone key presses
if (!foundRelease) {
setStatus("Removed extraneous key press (" + cs + ")");
steps.remove(i--);
}
}
}
}
