Event convertToOld() {
Object src = getSource();
int newid = id;
switch(id) {
case KeyEvent.KEY_PRESSED:
case KeyEvent.KEY_RELEASED:
KeyEvent ke = (KeyEvent)this;
if (ke.isActionKey()) {
newid = (id == KeyEvent.KEY_PRESSED?
Event.KEY_ACTION : Event.KEY_ACTION_RELEASE);
}
int keyCode = ke.getKeyCode();
if (keyCode == KeyEvent.VK_SHIFT ||
keyCode == KeyEvent.VK_CONTROL ||
keyCode == KeyEvent.VK_ALT) {
return null; // suppress modifier keys in old event model.
}
// no mask for button1 existed in old Event - strip it out
return new Event(src, ke.getWhen(), newid, 0, 0,
Event.getOldEventKey(ke),
(ke.getModifiers() & ~InputEvent.BUTTON1_MASK));
case MouseEvent.MOUSE_PRESSED:
case MouseEvent.MOUSE_RELEASED:
case MouseEvent.MOUSE_MOVED:
case MouseEvent.MOUSE_DRAGGED:
case MouseEvent.MOUSE_ENTERED:
case MouseEvent.MOUSE_EXITED:
MouseEvent me = (MouseEvent)this;
// no mask for button1 existed in old Event - strip it out
Event olde = new Event(src, me.getWhen(), newid,
me.getX(), me.getY(), 0,
(me.getModifiers() & ~InputEvent.BUTTON1_MASK));
olde.clickCount = me.getClickCount();
return olde;
case FocusEvent.FOCUS_GAINED:
return new Event(src, Event.GOT_FOCUS, null);
case FocusEvent.FOCUS_LOST:
return new Event(src, Event.LOST_FOCUS, null);
case WindowEvent.WINDOW_CLOSING:
case WindowEvent.WINDOW_ICONIFIED:
case WindowEvent.WINDOW_DEICONIFIED:
return new Event(src, newid, null);
case ComponentEvent.COMPONENT_MOVED:
if (src instanceof Frame || src instanceof Dialog) {
Point p = ((Component)src).getLocation();
return new Event(src, 0, Event.WINDOW_MOVED, p.x, p.y, 0, 0);
}
break;
case ActionEvent.ACTION_PERFORMED:
ActionEvent ae = (ActionEvent)this;
String cmd;
if (src instanceof Button) {
cmd = ((Button)src).getLabel();
} else if (src instanceof MenuItem) {
cmd = ((MenuItem)src).getLabel();
} else {
cmd = ae.getActionCommand();
}
return new Event(src, 0, newid, 0, 0, 0, ae.getModifiers(), cmd);
case ItemEvent.ITEM_STATE_CHANGED:
ItemEvent ie = (ItemEvent)this;
Object arg;
if (src instanceof List) {
newid = (ie.getStateChange() == ItemEvent.SELECTED?
Event.LIST_SELECT : Event.LIST_DESELECT);
arg = ie.getItem();
} else {
newid = Event.ACTION_EVENT;
if (src instanceof Choice) {
arg = ie.getItem();
} else { // Checkbox
arg = Boolean.valueOf(ie.getStateChange() == ItemEvent.SELECTED);
}
}
return new Event(src, newid, arg);
case AdjustmentEvent.ADJUSTMENT_VALUE_CHANGED:
AdjustmentEvent aje = (AdjustmentEvent)this;
switch(aje.getAdjustmentType()) {
case AdjustmentEvent.UNIT_INCREMENT:
newid = Event.SCROLL_LINE_DOWN;
break;
case AdjustmentEvent.UNIT_DECREMENT:
newid = Event.SCROLL_LINE_UP;
break;
case AdjustmentEvent.BLOCK_INCREMENT:
newid = Event.SCROLL_PAGE_DOWN;
break;
case AdjustmentEvent.BLOCK_DECREMENT:
newid = Event.SCROLL_PAGE_UP;
break;
case AdjustmentEvent.TRACK:
if (aje.getValueIsAdjusting()) {
newid = Event.SCROLL_ABSOLUTE;
}
else {
newid = Event.SCROLL_END;
}
break;
default:
return null;
}
return new Event(src, newid, Integer.valueOf(aje.getValue()));
default:
}
return null;
}
Converts a new event to an old one (used for compatibility).
If the new event cannot be converted (because no old equivalent
exists) then this returns null.
Note: this method is here instead of in each individual new
event class in java.awt.event because we don't want to make
it public and it needs to be called from java.awt. |