close choose by name popup by Shift-Enter, allow to check if it was closed this way

platform/lang-impl/src/com/intellij/ide/util/gotoByName/ChooseByNameBase.java

@@ -127,6 +127,8 @@ public abstract class ChooseByNameBase {
   protected JBPopup myTextPopup;
   protected JBPopup myDropdownPopup;
 
+  private boolean myClosedByShiftEnter = false;
+
   private static class MatchesComparator implements Comparator<String> {
     private final String myOriginalPattern;
 
@@ -175,6 +177,10 @@ public abstract class ChooseByNameBase {
     mySearchInAnyPlace = searchInAnyPlace;
   }
 
+  public boolean isClosedByShiftEnter() {
+    return myClosedByShiftEnter;
+  }
+
   /**
    * Set tool area. The method may be called only before invoke.
    *
@@ -419,6 +425,10 @@ public abstract class ChooseByNameBase {
 
     myTextField.addKeyListener(new KeyAdapter() {
       public void keyPressed(KeyEvent e) {
+        if (e.getKeyCode() == KeyEvent.VK_ENTER && (e.getModifiers() & KeyEvent.SHIFT_MASK) != 0) {
+          myClosedByShiftEnter = true;
+          close(true);
+        }
         if (!myListScrollPane.isVisible()) {
           return;
         }