JBR-3751 Window content isn't rendered with some window managers on Linuxjb17-b365

(cherry picked from commit 8d22e4dcb0c0a599ef3f03a7a0a2d3a2e528134c)

2 files changed, 18 insertions, 11 deletions

diff --git a/src/java.desktop/unix/classes/sun/awt/X11/XDecoratedPeer.java b/src/java.desktop/unix/classes/sun/awt/X11/XDecoratedPeer.java
index 076a214aeac..f089abe370b 100644
--- a/src/java.desktop/unix/classes/sun/awt/X11/XDecoratedPeer.java
+++ b/src/java.desktop/unix/classes/sun/awt/X11/XDecoratedPeer.java
@@ -781,19 +781,12 @@ abstract class XDecoratedPeer extends XWindowPeer {
             return;
         }
 
-        /*
-         * Some window managers configure before we are reparented and
-         * the send event flag is set! ugh... (Enlighetenment for one,
-         * possibly MWM as well).  If we haven't been reparented yet
-         * this is just the WM shuffling us into position.  Ignore
-         * it!!!! or we wind up in a bogus location.
-         */
         int runningWM = XWM.getWMID();
         if (insLog.isLoggable(PlatformLogger.Level.FINE)) {
             insLog.fine("reparented={0}, visible={1}, WM={2}, decorations={3}",
                         isReparented(), isVisible(), runningWM, getDecorations());
         }
-        if (!isReparented() && isVisible() && runningWM != XWM.NO_WM
+        if (ENABLE_REPARENTING_CHECK && !isReparented() && isVisible() && runningWM != XWM.NO_WM
                 &&  !XWM.isNonReparentingWM()
                 && getDecorations() != XWindowAttributesData.AWT_DECOR_NONE) {
             insLog.fine("- visible but not reparented, skipping");
diff --git a/src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java b/src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java
index 903938986a2..b89cd7ed4b9 100644
--- a/src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java
+++ b/src/java.desktop/unix/classes/sun/awt/X11/XWindowPeer.java
@@ -52,6 +52,8 @@ import sun.awt.X11GraphicsEnvironment;
 import sun.java2d.pipe.Region;
 import sun.util.logging.PlatformLogger;
 
+import sun.security.action.GetPropertyAction;
+
 class XWindowPeer extends XPanelPeer implements WindowPeer,
                                                 DisplayChangedListener {
 
@@ -61,6 +63,9 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
     private static final PlatformLogger grabLog = PlatformLogger.getLogger("sun.awt.X11.grab.XWindowPeer");
     private static final PlatformLogger iconLog = PlatformLogger.getLogger("sun.awt.X11.icon.XWindowPeer");
 
+    static final boolean ENABLE_REPARENTING_CHECK
+            = "true".equals(GetPropertyAction.privilegedGetProperty("reparenting.check"));
+
     // should be synchronized on awtLock
     private static Set<XWindowPeer> windows = new HashSet<XWindowPeer>();
 
@@ -747,7 +752,8 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
 
         int runningWM = XWM.getWMID();
         Point newLocation = targetBounds.getLocation();
-        if (xe.get_send_event() || runningWM == XWM.NO_WM || XWM.isNonReparentingWM()) {
+        if (xe.get_send_event() ||
+                (ENABLE_REPARENTING_CHECK ? (runningWM == XWM.NO_WM || XWM.isNonReparentingWM()) : !isReparented())) {
             // Location, Client size + insets
             newLocation = new Point(scaleDown(xe.get_x()) - leftInset,
                                     scaleDown(xe.get_y()) - topInset);
@@ -1443,6 +1449,14 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
         isUnhiding |= isWMStateNetHidden();
 
         super.handleMapNotifyEvent(xev);
+
+        if (!ENABLE_REPARENTING_CHECK && delayedModalBlocking) {
+            // case of non-re-parenting WM
+            // (for a re-parenting WM this should have been already done on ReparentNotify processing)
+            addToTransientFors(AWTAccessor.getComponentAccessor().getPeer(modalBlocker));
+            delayedModalBlocking = false;
+        }
+
         if (isBeforeFirstMapNotify && !winAttr.initialFocus && shouldSuppressWmTakeFocus()) {
             suppressWmTakeFocus(false); // restore the protocol.
             if (!XWM.isKDE2()) {
@@ -1662,7 +1676,7 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
                     }
                     modalBlocker = d;
 
-                    if (isReparented() || XWM.isNonReparentingWM()) {
+                    if (isReparented() || ENABLE_REPARENTING_CHECK && XWM.isNonReparentingWM()) {
                         addToTransientFors(blockerPeer, javaToplevels);
                     } else {
                         delayedModalBlocking = true;
@@ -1673,7 +1687,7 @@ class XWindowPeer extends XPanelPeer implements WindowPeer,
                     }
                     modalBlocker = null;
 
-                    if (isReparented() || XWM.isNonReparentingWM()) {
+                    if (isReparented() || ENABLE_REPARENTING_CHECK && XWM.isNonReparentingWM()) {
                         removeFromTransientFors();
                     } else {
                         delayedModalBlocking = false;