force hide shadow

platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/CompletionExtender.java

@@ -16,7 +16,8 @@
 package com.intellij.codeInsight.lookup.impl;
 
 import com.intellij.codeInsight.lookup.LookupElement;
-import com.intellij.ui.HeavyweightHint;
+import com.intellij.ui.HintHint;
+import com.intellij.ui.LightweightHint;
 import com.intellij.ui.awt.RelativePoint;
 import com.intellij.util.ui.UIUtil;
 import org.jetbrains.annotations.NotNull;
@@ -29,13 +30,14 @@ import java.awt.event.ComponentEvent;
 /**
  * @author Konstantin Bulenkov
  */
-public class CompletionExtender extends HeavyweightHint {
+public class CompletionExtender extends LightweightHint {
   private LookupElement myElement;
   private LookupImpl myLookup;
   private int myIndex;
 
   public CompletionExtender(@NotNull LookupElement element, @NotNull LookupImpl lookup) {
-    super(createComponent(element, lookup), false);
+    super(createComponent(element, lookup));
+    setForceHideShadow(true);
     myElement = element;
     myLookup = lookup;
     myIndex = myLookup.getList().getSelectedIndex();
@@ -74,14 +76,15 @@ public class CompletionExtender extends HeavyweightHint {
   public boolean show() {
     final JList list = myLookup.getList();
     if (getComponent().getWidth() > list.getWidth()) {
-      final JComponent rootPane = UIUtil.getRootPane(myLookup.getEditor().getContentComponent());
+      final JComponent rootPane = myLookup.myLayeredPane;
 
       final Point p = list.getLocationOnScreen();
       p.y += list.indexToLocation(list.getSelectedIndex()).y;
       SwingUtilities.convertPointFromScreen(p, rootPane);
 
       if (rootPane != null) {
-        show(rootPane, p);
+        final HintHint hint = new HintHint();
+        show(rootPane, p.x, p.y, null, hint);
         return true;
       }
     }

platform/lang-impl/src/com/intellij/codeInsight/lookup/impl/LookupImpl.java

@@ -45,7 +45,6 @@ import com.intellij.openapi.project.Project;
 import com.intellij.openapi.ui.popup.JBPopup;
 import com.intellij.openapi.ui.popup.JBPopupFactory;
 import com.intellij.openapi.util.*;
-import com.intellij.openapi.util.registry.Registry;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.openapi.util.text.StringUtilRt;
 import com.intellij.openapi.wm.IdeFocusManager;
@@ -142,7 +141,7 @@ public class LookupImpl extends LightweightHint implements LookupEx, Disposable
   private Alarm myHintAlarm = new Alarm();
   private JLabel mySortingLabel = new JLabel();
   private final JScrollPane myScrollPane;
-  private final LookupLayeredPane myLayeredPane = new LookupLayeredPane();
+  final LookupLayeredPane myLayeredPane = new LookupLayeredPane();
   private JButton myScrollBarIncreaseButton;
   private boolean myStartCompletionWhenNothingMatches;
   private boolean myResizePending;

platform/platform-impl/src/com/intellij/ui/LightweightHint.java

@@ -64,6 +64,8 @@ public class LightweightHint extends UserDataHolderBase implements Hint {
   private HintHint myHintHint;
   private JComponent myFocusRequestor;
 
+  private boolean myForceHideShadow = false;
+
   public LightweightHint(@NotNull final JComponent component) {
     myComponent = component;
   }
@@ -207,7 +209,7 @@ public class LightweightHint extends UserDataHolderBase implements Hint {
         .setMovable(myTitle != null)
         .setTitle(myTitle)
         .setModalContext(false)
-        .setShowShadow(isRealPopup())
+        .setShowShadow(isRealPopup() && !isForceHideShadow())
         .setCancelKeyEnabled(false)
         .setCancelOnClickOutside(myCancelOnClickOutside)
         .setCancelCallback(new Computable<Boolean>() {
@@ -259,6 +261,14 @@ public class LightweightHint extends UserDataHolderBase implements Hint {
     return false;
   }
 
+  public boolean isForceHideShadow() {
+    return myForceHideShadow;
+  }
+
+  public void setForceHideShadow(boolean forceHideShadow) {
+    myForceHideShadow = forceHideShadow;
+  }
+
   private static boolean fitsLayeredPane(JLayeredPane pane, JComponent component, RelativePoint desiredLocation, HintHint hintHint) {
     if (hintHint.isAwtTooltip()) {
       Dimension size = component.getPreferredSize();