Issue 2031. Close omnibox's popup when Editor lost focus.

editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java

Index: editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java
diff --git a/editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java b/editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java
index d39decac673716f1648d4876b7defe275e04468e..673f2e513287291b4e9ed84eda0f017d4b5bdf09 100644
--- a/editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java
+++ b/editor/tools/plugins/com.google.dart.tools.deploy/src/com/google/dart/tools/ui/omni/OmniBoxControlContribution.java
@@ -29,6 +29,8 @@ import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.MouseAdapter;
 import org.eclipse.swt.events.MouseEvent;
 import org.eclipse.swt.events.MouseTrackAdapter;
+import org.eclipse.swt.events.ShellAdapter;
+import org.eclipse.swt.events.ShellEvent;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
@@ -424,6 +426,20 @@ public class OmniBoxControlContribution {
         handleFocusLost();
       }
     });
+
+    // close popup when Editor lost focus
+    textControl.getShell().addShellListener(new ShellAdapter() {
+      @Override
+      public void shellDeactivated(ShellEvent e) {
+        Shell activeShell = Display.getCurrent().getActiveShell();
+        if (activeShell == null) {
+          if (popup != null) {
+            popup.close();
+            popup = null;
+          }
+        }
+      }
+    });
   }
 
   private void openPopup() {