diff --git a/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java b/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
index 435e230b6a47..2bbca4d274fc 100644
--- a/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
+++ b/platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java
@@ -656,12 +656,7 @@ public class IdeEventQueue extends EventQueue {
               try {
                 Object owner = getNativeFocusOwner.invoke(mgr);
                 if (owner instanceof Component) {
-                  Component nativeFocusOwner = (Component)owner;
-                  if (nativeFocusOwner instanceof Window) {
-                    showingWindow = (Window)nativeFocusOwner;
-                  } else {
-                    showingWindow = SwingUtilities.getWindowAncestor(nativeFocusOwner);
-                  }
+                  showingWindow = UIUtil.getWindow((Component)owner);
                 }
               }
               catch (Exception e1) {
@@ -996,7 +991,7 @@ public class IdeEventQueue extends EventQueue {
                 @Override
                 public void run() {
                   try {
-                    final Window window = component instanceof Window ? (Window)component : SwingUtilities.windowForComponent(component);
+                    final Window window = UIUtil.getWindow(component);
                     if (window == null || !window.isActive()) {
                       return;
                     }
diff --git a/platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaRootPaneUI.java b/platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaRootPaneUI.java
index 8b2be4cca78c..114422f579e8 100644
--- a/platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaRootPaneUI.java
+++ b/platform/platform-impl/src/com/intellij/ide/ui/laf/darcula/ui/DarculaRootPaneUI.java
@@ -15,6 +15,8 @@
  */
 package com.intellij.ide.ui.laf.darcula.ui;
 
+import com.intellij.util.ui.UIUtil;
+
 import javax.swing.*;
 import javax.swing.event.MouseInputAdapter;
 import javax.swing.event.MouseInputListener;
@@ -109,12 +111,7 @@ public class DarculaRootPaneUI extends BasicRootPaneUI {
 
 
   private void installWindowListeners(JRootPane root, Component parent) {
-    if (parent instanceof Window) {
-      myWindow = (Window)parent;
-    }
-    else {
-      myWindow = SwingUtilities.getWindowAncestor(parent);
-    }
+    myWindow = UIUtil.getWindow(parent);
 
     if (myWindow != null) {
       if (myMouseInputListener == null) {
@@ -177,13 +174,7 @@ public class DarculaRootPaneUI extends BasicRootPaneUI {
           });
         }
 
-        Window currWindow;
-        if (parent instanceof Window) {
-          currWindow = (Window)parent;
-        }
-        else {
-          currWindow = SwingUtilities.getWindowAncestor(parent);
-        }
+        Window currWindow = UIUtil.getWindow(parent);
         if (myWindowListener != null) {
           myCurrentWindow
             .removeWindowListener(myWindowListener);
diff --git a/platform/platform-impl/src/com/intellij/openapi/application/impl/ApplicationImpl.java b/platform/platform-impl/src/com/intellij/openapi/application/impl/ApplicationImpl.java
index 512ee8729dca..90bd90d474d1 100644
--- a/platform/platform-impl/src/com/intellij/openapi/application/impl/ApplicationImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/application/impl/ApplicationImpl.java
@@ -672,7 +672,7 @@ public class ApplicationImpl extends PlatformComponentManagerImpl implements App
   @Override
   @NotNull
   public ModalityState getModalityStateForComponent(@NotNull Component c) {
-    Window window = c instanceof Window ? (Window)c : SwingUtilities.windowForComponent(c);
+    Window window = UIUtil.getWindow(c);
     if (window == null) return getNoneModalityState(); //?
     return LaterInvocator.modalityStateForWindow(window);
   }
diff --git a/platform/platform-impl/src/com/intellij/openapi/keymap/impl/IdeKeyEventDispatcher.java b/platform/platform-impl/src/com/intellij/openapi/keymap/impl/IdeKeyEventDispatcher.java
index 852cc7f2e5ff..ff2820a5cc90 100644
--- a/platform/platform-impl/src/com/intellij/openapi/keymap/impl/IdeKeyEventDispatcher.java
+++ b/platform/platform-impl/src/com/intellij/openapi/keymap/impl/IdeKeyEventDispatcher.java
@@ -249,12 +249,7 @@ public final class IdeKeyEventDispatcher implements Disposable {
    * @throws IllegalArgumentException if <code>component</code> is <code>null</code>.
    */
   public static boolean isModalContext(@NotNull Component component) {
-    Window window;
-    if (component instanceof Window) {
-      window = (Window)component;
-    } else {
-      window = SwingUtilities.getWindowAncestor(component);
-    }
+    Window window = UIUtil.getWindow(component);
 
     if (window instanceof IdeFrameImpl) {
       final Component pane = ((IdeFrameImpl) window).getGlassPane();
diff --git a/platform/platform-impl/src/com/intellij/openapi/wm/ex/LayoutFocusTraversalPolicyExt.java b/platform/platform-impl/src/com/intellij/openapi/wm/ex/LayoutFocusTraversalPolicyExt.java
index 5a64a1cd8bd6..b427b94dc2bf 100644
--- a/platform/platform-impl/src/com/intellij/openapi/wm/ex/LayoutFocusTraversalPolicyExt.java
+++ b/platform/platform-impl/src/com/intellij/openapi/wm/ex/LayoutFocusTraversalPolicyExt.java
@@ -17,6 +17,7 @@ package com.intellij.openapi.wm.ex;
 
 import com.intellij.openapi.util.Computable;
 import com.intellij.openapi.util.registry.Registry;
+import com.intellij.util.ui.UIUtil;
 import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
@@ -56,12 +57,7 @@ public class LayoutFocusTraversalPolicyExt extends LayoutFocusTraversalPolicy{
 
   @Nullable
   public static LayoutFocusTraversalPolicyExt findWindowPolicy(Component c) {
-    Window wnd;
-    if (c instanceof Window) {
-      wnd = (Window)c;
-    } else {
-      wnd = SwingUtilities.getWindowAncestor(c);
-    }
+    Window wnd = UIUtil.getWindow(c);
 
     final FocusTraversalPolicy policy = wnd.getFocusTraversalPolicy();
     if (policy instanceof LayoutFocusTraversalPolicyExt) {
diff --git a/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeGlassPaneImpl.java b/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeGlassPaneImpl.java
index 1613953287b6..ecee36ecf18a 100644
--- a/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeGlassPaneImpl.java
+++ b/platform/platform-impl/src/com/intellij/openapi/wm/impl/IdeGlassPaneImpl.java
@@ -109,8 +109,7 @@ public class IdeGlassPaneImpl extends JPanel implements IdeGlassPaneEx, IdeEvent
 
     if (e instanceof MouseEvent) {
       MouseEvent me = (MouseEvent)e;
-      Window eventWindow =
-        me.getComponent() instanceof Window ? (Window)me.getComponent() : SwingUtilities.getWindowAncestor(me.getComponent());
+      Window eventWindow = UIUtil.getWindow(me.getComponent());
 
       if (isContextMenu(eventWindow)) return false;
 
@@ -155,7 +154,7 @@ public class IdeGlassPaneImpl extends JPanel implements IdeGlassPaneEx, IdeEvent
     MouseEvent me = (MouseEvent)e;
     final Component meComponent = me.getComponent();
     if (!dispatched && meComponent != null) {
-      final Window eventWindow = meComponent instanceof Window ? (Window)meComponent : SwingUtilities.getWindowAncestor(meComponent);
+      final Window eventWindow = UIUtil.getWindow(meComponent);
       if (eventWindow != SwingUtilities.getWindowAncestor(myRootPane)) {
         return false;
       }
diff --git a/platform/platform-impl/src/com/intellij/ui/FocusTrackback.java b/platform/platform-impl/src/com/intellij/ui/FocusTrackback.java
index 5c531a7b6ae8..fee094a77ba6 100644
--- a/platform/platform-impl/src/com/intellij/ui/FocusTrackback.java
+++ b/platform/platform-impl/src/com/intellij/ui/FocusTrackback.java
@@ -69,7 +69,7 @@ public class FocusTrackback {
   private boolean myForcedRestore;
 
   public FocusTrackback(@NotNull Object requestor, Component parent, boolean mustBeShown) {
-    this(requestor, parent == null || parent instanceof Window ? (Window)parent : SwingUtilities.getWindowAncestor(parent), mustBeShown);
+    this(requestor, parent == null ? null : UIUtil.getWindow(parent), mustBeShown);
   }
 
   public FocusTrackback(@NotNull Object requestor, Window parent, boolean mustBeShown) {
@@ -263,7 +263,7 @@ public class FocusTrackback {
       }
 
       if (myParentWindow != null) {
-        final Window to = toFocus instanceof Window ? (Window) toFocus : SwingUtilities.getWindowAncestor(toFocus);
+        final Window to = UIUtil.getWindow(toFocus);
         if (to != null && UIUtil.findUltimateParent(to) == UIUtil.findUltimateParent(myParentWindow)) {  // IDEADEV-34537
           toFocus.requestFocus();
           result.setDone();
@@ -490,7 +490,7 @@ public class FocusTrackback {
   public static List<JBPopup> getChildPopups(@NotNull final Component component) {
     List<JBPopup> result = new ArrayList<JBPopup>();
 
-    final Window window = component instanceof Window ? (Window)component: SwingUtilities.windowForComponent(component);
+    final Window window = UIUtil.getWindow(component);
     if (window == null) return result;
 
     final List<FocusTrackback> stack = getCleanStackForRoot(findUtlimateParent(window));
diff --git a/platform/platform-impl/src/com/intellij/ui/popup/AbstractPopup.java b/platform/platform-impl/src/com/intellij/ui/popup/AbstractPopup.java
index 2f87b866e68a..02f0785971b7 100644
--- a/platform/platform-impl/src/com/intellij/ui/popup/AbstractPopup.java
+++ b/platform/platform-impl/src/com/intellij/ui/popup/AbstractPopup.java
@@ -1674,17 +1674,11 @@ public class AbstractPopup implements JBPopup {
 
     if (owner == null) return false;
 
-    Window wnd;
-    if (owner instanceof Window) {
-      wnd = (Window)owner;
-    }
-    else {
-      wnd = SwingUtilities.getWindowAncestor(owner);
-    }
+    Window wnd = UIUtil.getWindow(owner);
 
     for (Component each : components) {
       if (each != null && SwingUtilities.isDescendingFrom(owner, each)) {
-        Window eachWindow = each instanceof Window ? (Window)each : SwingUtilities.getWindowAncestor(each);
+        Window eachWindow = UIUtil.getWindow(each);
         if (eachWindow == wnd) {
           return true;
         }
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 3b78e44b3f89..91aa6fc8d2b4 100644
--- a/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java
+++ b/platform/platform-impl/src/com/intellij/ui/popup/PopupComponent.java
@@ -106,7 +106,7 @@ public interface PopupComponent {
         throw new IllegalArgumentException("Popup owner must be showing");
       }
 
-      final Window wnd = owner instanceof Window ? (Window)owner: SwingUtilities.getWindowAncestor(owner);
+      final Window wnd = UIUtil.getWindow(owner);
       if (wnd instanceof Frame) {
         myDialog = new JDialog((Frame)wnd);
       } else if (wnd instanceof Dialog) {
diff --git a/platform/util/src/com/intellij/util/ui/UIUtil.java b/platform/util/src/com/intellij/util/ui/UIUtil.java
index ad8d3eeb36c3..5e3402802df6 100644
--- a/platform/util/src/com/intellij/util/ui/UIUtil.java
+++ b/platform/util/src/com/intellij/util/ui/UIUtil.java
@@ -3217,4 +3217,16 @@ public class UIUtil {
 
     textField.setColumns(4);
   }
+
+  /**
+   * Returns the first window ancestor of the component.
+   * Note that this method returns the component itself if it is a window.
+   *
+   * @param component the component used to find corresponding window
+   * @return the first window ancestor of the component; or {@code null}
+   *         if the component is not a window and is not contained inside a window
+   */
+  public static Window getWindow(Component component) {
+    return component instanceof Window ? (Window)component : SwingUtilities.getWindowAncestor(component);
+  }
 }