/**
* The onKeyDown method handles all keys that are held down, before KeyUp and KeyPress events are
* triggered.
*/
@Override
public void onKeyDown(KeyDownEvent event) {
code = new Code(event);
if (!code.isControlKey()) {
if (code.isFunctionKey() || code.isCtrlDown() || code.isAltDown()) {
processCode(code);
event.getNativeEvent().stopPropagation();
event.getNativeEvent().preventDefault();
}
}
}
/**
* The processCode method deciphers each key press or combination of key presses and converts them
* into VT100 format bytes
*
* @param c Key/Char code
*/
public void processCode(Code c) {
int k = 0;
boolean isCharCode = false;
if (c.getCharCode() != 0) {
k = c.getCharCode();
} else if (c.getKeyCode() != 0) k = c.getKeyCode();
if (c.isCtrlDown()) {
k = ctrlPressed(k);
if (k == -1) return;
} else if (c.isFunctionKey() || c.isAltDown()) {
k = fromKeyDownSwitch(k);
if (k == -1) return;
}
if (buildCharacter(k, isCharCode) != null) {
queue(buildCharacter(k, isCharCode));
}
}
