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11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
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17  * You should have received a copy of the GNU General Public License version
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24  */
25 
26 package sun.awt.X11;
27 
28 /**
29  * This class represents AWT application root window functionality.
30  * Object of this class is singleton, all window reference it to have
31  * common logical ancestor
32  */
33 class XRootWindow extends XBaseWindow {
34     private static class LazyHolder {
35         private static final XRootWindow xawtRootWindow;
36 
37         static {
XToolkit.awtLock()38             XToolkit.awtLock();
39             try {
40                 xawtRootWindow = new XRootWindow();
41                 xawtRootWindow.init(xawtRootWindow.getDelayedParams().delete(DELAYED));
42             } finally {
XToolkit.awtUnlock()43                 XToolkit.awtUnlock();
44             }
45         }
46 
47     }
getInstance()48     static XRootWindow getInstance() {
49         return LazyHolder.xawtRootWindow;
50     }
51 
XRootWindow()52     private XRootWindow() {
53         super(new XCreateWindowParams(new Object[] { DELAYED, Boolean.TRUE,
54                                                      EVENT_MASK, XConstants.StructureNotifyMask }));
55     }
56 
postInit(XCreateWindowParams params)57     public void postInit(XCreateWindowParams params){
58         super.postInit(params);
59         setWMClass(getWMClass());
60     }
61 
getWMName()62     protected String getWMName() {
63         return XToolkit.getAWTAppClassName();
64     }
getWMClass()65     protected String[] getWMClass() {
66         return new String[] {XToolkit.getAWTAppClassName(), XToolkit.getAWTAppClassName()};
67     }
68 
69   /* Fix 4976517.  Return awt_root_shell to XToolkit.c */
getXRootWindow()70     private static long getXRootWindow() {
71         return getXAWTRootWindow().getWindow();
72     }
73 }
74