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1 package net.sf.panoptes.swing.cursor;
2
3 import java.awt.*;
4 import javax.swing.SwingUtilities  ;
5
6 class DispatchedEvent {
7 private final Object mutex = new Object ();
8 private final Object source;
9 private Component parent;
10 private Cursor lastCursor;
11
12 public DispatchedEvent(Object source) {
13 this.source = source;
14 }
15 public void setCursor() {
16 synchronized (mutex) {
17 parent = findVisibleParent();
18 if (parent != null) {
19 lastCursor = (parent.isCursorSet() ? parent.getCursor() : null);
20 parent.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
21 }
22 }
23 }
24 public boolean resetCursor() {
25 synchronized (mutex) {
26 if (parent != null) {
27 parent.setCursor(lastCursor);
28 parent = null;
29 return true;
30 }
31 return false;
32 }
33 }
34 private Component findVisibleParent() {
35 Component result = null;
36 if (source instanceof Component) {
37 result = SwingUtilities.getRoot((Component) source);
38 } else if (source instanceof MenuComponent) {
39 MenuContainer mParent = ((MenuComponent) source).getParent();
40 if (mParent instanceof Component) {
41 result = SwingUtilities.getRoot((Component) mParent);
42 }
43 }
44 if ((result != null) && result.isVisible()) {
45 return result;
46 } else {
47 return null;
48 }
49 }
50 } |
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