IDEA-188519 Actions that do not show popup because of dumb mode fail typeahead

platform/platform-impl/src/com/intellij/ide/IdeEventQueue.java

@@ -229,6 +229,8 @@ public class IdeEventQueue extends EventQueue {
     addDispatcher(new EditingCanceller(), null);
 
     abracadabraDaberBoreh();
+
+    IdeKeyEventDispatcher.addDumbModeWarningListener(() -> flushDelayedKeyEvents());
   }
 
   private void abracadabraDaberBoreh() {
@@ -1386,7 +1388,7 @@ public class IdeEventQueue extends EventQueue {
     return true;
   }
 
-  private void flushDelayedKeyEvents() {
+  public void flushDelayedKeyEvents() {
     delayKeyEvents.set(false);
     int size = myDelayedKeyEvents.size();
     for (int keyEventIndex = 0; keyEventIndex < size; keyEventIndex++) {

platform/platform-impl/src/com/intellij/openapi/keymap/impl/DumbModeWarningListener.java

@@ -0,0 +1,6 @@
+// Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license that can be found in the LICENSE file.
+package com.intellij.openapi.keymap.impl;
+
+public interface DumbModeWarningListener {
+  void actionCanceledBecauseOfDumbMode();
+}

platform/platform-impl/src/com/intellij/openapi/keymap/impl/IdeKeyEventDispatcher.java

@@ -628,6 +628,13 @@ public final class IdeKeyEventDispatcher implements Disposable {
     }
 
     if (!nonDumbAwareAction.isEmpty()) {
+
+      if (dumbModeWarningListener != null) {
+        dumbModeWarningListener.actionCanceledBecauseOfDumbMode();
+      }
+
+      IdeEventQueue.getInstance().flushDelayedKeyEvents();
+
       showDumbModeWarningLaterIfNobodyConsumesEvent(e, nonDumbAwareAction.toArray(new AnActionEvent[0]));
     }
 
@@ -644,6 +651,12 @@ public final class IdeKeyEventDispatcher implements Disposable {
       }
   }
 
+  private static DumbModeWarningListener dumbModeWarningListener  = null;
+
+  public static void addDumbModeWarningListener (DumbModeWarningListener listener) {
+    dumbModeWarningListener = listener;
+  }
+
   /**
    * This method fills {@code myActions} list.
    * @return true if there is a shortcut with second stroke found.