1553             awtUnlock();
1554         }
1555         return timeStamp;
1556     }
1557     @Override
1558     protected void initializeDesktopProperties() {
1559         desktopProperties.put("DnD.Autoscroll.initialDelay",
1560                               Integer.valueOf(50));
1561         desktopProperties.put("DnD.Autoscroll.interval",
1562                               Integer.valueOf(50));
1563         desktopProperties.put("DnD.Autoscroll.cursorHysteresis",
1564                               Integer.valueOf(5));
1565         desktopProperties.put("Shell.shellFolderManager",
1566                               "sun.awt.shell.ShellFolderManager");
1567         // Don't want to call getMultiClickTime() if we are headless
1568         if (!GraphicsEnvironment.isHeadless()) {
1569             desktopProperties.put("awt.multiClickInterval",
1570                                   Integer.valueOf(getMultiClickTime()));
1571             desktopProperties.put("awt.mouse.numButtons",
1572                                   Integer.valueOf(getNumberOfButtons()));




1573         }
1574     }
1575 
1576     /**
1577      * This method runs through the XPointer and XExtendedPointer array.
1578      * XExtendedPointer has priority because on some systems XPointer
1579      * (which is assigned to the virtual pointer) reports the maximum
1580      * capabilities of the mouse pointer (i.e. 32 physical buttons).
1581      */
1582     private native int getNumberOfButtonsImpl();
1583 
1584     @Override
1585     public int getNumberOfButtons(){
1586         awtLock();
1587         try {
1588             if (numberOfButtons == 0) {
1589                 numberOfButtons = getNumberOfButtonsImpl();
1590                 numberOfButtons = (numberOfButtons > MAX_BUTTONS_SUPPORTED)? MAX_BUTTONS_SUPPORTED : numberOfButtons;
1591                 //4th and 5th buttons are for wheel and shouldn't be reported as buttons.
1592                 //If we have more than 3 physical buttons and a wheel, we report N-2 buttons.

1553             awtUnlock();
1554         }
1555         return timeStamp;
1556     }
1557     @Override
1558     protected void initializeDesktopProperties() {
1559         desktopProperties.put("DnD.Autoscroll.initialDelay",
1560                               Integer.valueOf(50));
1561         desktopProperties.put("DnD.Autoscroll.interval",
1562                               Integer.valueOf(50));
1563         desktopProperties.put("DnD.Autoscroll.cursorHysteresis",
1564                               Integer.valueOf(5));
1565         desktopProperties.put("Shell.shellFolderManager",
1566                               "sun.awt.shell.ShellFolderManager");
1567         // Don't want to call getMultiClickTime() if we are headless
1568         if (!GraphicsEnvironment.isHeadless()) {
1569             desktopProperties.put("awt.multiClickInterval",
1570                                   Integer.valueOf(getMultiClickTime()));
1571             desktopProperties.put("awt.mouse.numButtons",
1572                                   Integer.valueOf(getNumberOfButtons()));
1573             if(SunGraphicsEnvironment.isUIScaleEnabled()) {
1574                 addPropertyChangeListener("gnome.Xft/DPI", evt ->
1575                                                      localEnv.displayChanged());
1576             }
1577         }
1578     }
1579 
1580     /**
1581      * This method runs through the XPointer and XExtendedPointer array.
1582      * XExtendedPointer has priority because on some systems XPointer
1583      * (which is assigned to the virtual pointer) reports the maximum
1584      * capabilities of the mouse pointer (i.e. 32 physical buttons).
1585      */
1586     private native int getNumberOfButtonsImpl();
1587 
1588     @Override
1589     public int getNumberOfButtons(){
1590         awtLock();
1591         try {
1592             if (numberOfButtons == 0) {
1593                 numberOfButtons = getNumberOfButtonsImpl();
1594                 numberOfButtons = (numberOfButtons > MAX_BUTTONS_SUPPORTED)? MAX_BUTTONS_SUPPORTED : numberOfButtons;
1595                 //4th and 5th buttons are for wheel and shouldn't be reported as buttons.
1596                 //If we have more than 3 physical buttons and a wheel, we report N-2 buttons.