public void unregisterKeyStroke(KeyStroke ks, JComponent c) { // component may have already been removed from the hierarchy, we // need to look up the container using the componentKeyStrokeMap. ComponentKeyStrokePair ckp = new ComponentKeyStrokePair(c, ks); Container topContainer = componentKeyStrokeMap.get(ckp); if (topContainer == null) { // never heard of this pairing, so bail return; } Hashtable keyMap = containerMap.get(topContainer); if (keyMap == null) { // this should never happen, but I'm being safe Thread.dumpStack(); return; } Object tmp = keyMap.get(ks); if (tmp == null) { // this should never happen, but I'm being safe Thread.dumpStack(); return; } if (tmp instanceof JComponent && tmp == c) { keyMap.remove(ks); // remove the KeyStroke from the Map // System.out.println("removed a stroke" + ks); } else if (tmp instanceof Vector) { // this means there is more than one component reg for this key Vector v = (Vector) tmp; v.removeElement(c); if (v.isEmpty()) { keyMap.remove(ks); // remove the KeyStroke from the Map // System.out.println("removed a ks vector"); } } if (keyMap.isEmpty()) { // if no more bindings in this table containerMap.remove(topContainer); // remove table to enable GC // System.out.println("removed a container"); } componentKeyStrokeMap.remove(ckp); // Check for EmbeddedFrame case, they know how to process accelerators even // when focus is not in Java if (topContainer instanceof EmbeddedFrame) { ((EmbeddedFrame) topContainer).unregisterAccelerator(ks); } }
public void unregisterMenuBar(JMenuBar mb) { Container topContainer = getTopAncestor(mb); if (topContainer == null) { return; } Hashtable keyMap = containerMap.get(topContainer); if (keyMap != null) { Vector v = (Vector) keyMap.get(JMenuBar.class); if (v != null) { v.removeElement(mb); if (v.isEmpty()) { keyMap.remove(JMenuBar.class); if (keyMap.isEmpty()) { // remove table to enable GC containerMap.remove(topContainer); } } } } }