From c03978157f9835875c1134c7adf01fa305f7d3cd Mon Sep 17 00:00:00 2001
From: Konstantin Bulenkov <kb@jetbrains.com>
Date: Sat, 5 Oct 2013 00:35:34 +0200
Subject: [PATCH] fix popup flickering under Darcula

---
 .../com/intellij/ui/popup/PopupComponent.java   | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java b/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java
index 506155e84f94..245a1bc029d8 100644
--- a/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java
+++ b/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java
@@ -21,6 +21,7 @@ import com.intellij.openapi.ui.popup.util.PopupUtil;
 import com.intellij.openapi.util.SystemInfo;
 import com.intellij.util.ReflectionUtil;
 import com.intellij.util.ui.UIUtil;
+import com.sun.awt.AWTUtilities;
 
 import javax.swing.*;
 import java.awt.*;
@@ -135,7 +136,13 @@ public interface PopupComponent {
       if (!myRequestFocus) {
         myDialog.setFocusableWindowState(false);
       }
+      if (UIUtil.isUnderDarcula()) {
+        AWTUtilities.setWindowOpaque(myDialog, false);
+      }
       myDialog.setVisible(true);
+      if (UIUtil.isUnderDarcula()) {
+        AWTUtilities.setWindowOpaque(myDialog, true);
+      }
       SwingUtilities.invokeLater(new Runnable() {
         public void run() {
           myDialog.setFocusableWindowState(true);
@@ -182,8 +189,16 @@ public interface PopupComponent {
     }
 
     public void show() {
-      myPopup.show();
       Window wnd = getWindow();
+      if (UIUtil.isUnderDarcula() && wnd != null) {
+        AWTUtilities.setWindowOpaque(wnd, false);
+      }
+
+      myPopup.show();
+
+      if (UIUtil.isUnderDarcula() && wnd != null) {
+        AWTUtilities.setWindowOpaque(wnd, true);
+      }
       if (wnd instanceof JWindow) {
         ((JWindow)wnd).getRootPane().putClientProperty(JBPopup.KEY, myJBPopup);
       }