From 3bdaee047e70e360e7fe85893cf670f8e87de58a Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Tue, 8 Sep 2015 17:28:41 +0200
Subject: [PATCH] allow bg dumb mode from 'Mark directory as * root' actions
 (EA-71874 - Throwable: DumbServiceImpl.scheduleCacheUpdate)

---
 .../ide/projectView/actions/MarkRootActionBase.java | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/platform/lang-impl/src/com/intellij/ide/projectView/actions/MarkRootActionBase.java b/platform/lang-impl/src/com/intellij/ide/projectView/actions/MarkRootActionBase.java
index ac2326da6dac..79553d1d331f 100644
--- a/platform/lang-impl/src/com/intellij/ide/projectView/actions/MarkRootActionBase.java
+++ b/platform/lang-impl/src/com/intellij/ide/projectView/actions/MarkRootActionBase.java
@@ -22,6 +22,8 @@ import com.intellij.openapi.actionSystem.LangDataKeys;
 import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.module.Module;
 import com.intellij.openapi.project.DumbAwareAction;
+import com.intellij.openapi.project.DumbModePermission;
+import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.roots.*;
 import com.intellij.openapi.roots.impl.DirectoryIndex;
@@ -60,11 +62,16 @@ public abstract class MarkRootActionBase extends DumbAwareAction {
         modifyRoots(file, entry);
       }
     }
-    ApplicationManager.getApplication().runWriteAction(new Runnable() {
+    DumbService.allowStartingDumbModeInside(DumbModePermission.MAY_START_BACKGROUND, new Runnable() {
       @Override
       public void run() {
-        model.commit();
-        module.getProject().save();
+        ApplicationManager.getApplication().runWriteAction(new Runnable() {
+          @Override
+          public void run() {
+            model.commit();
+            module.getProject().save();
+          }
+        });
       }
     });
   }