From 761e36033e6bb1754368df7d81965b5dc6a34020 Mon Sep 17 00:00:00 2001
From: peter <peter@jetbrains.com>
Date: Tue, 8 Sep 2015 18:20:00 +0200
Subject: [PATCH] allow bg dumb mode when associating file type from diff
 (EA-72563 - Throwable: DumbServiceImpl.scheduleCacheUpdate)

---
 .../requests/UnknownFileTypeDiffRequest.java     | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/platform/diff-impl/src/com/intellij/diff/requests/UnknownFileTypeDiffRequest.java b/platform/diff-impl/src/com/intellij/diff/requests/UnknownFileTypeDiffRequest.java
index 53d0c74e4226..03a21984ff2d 100644
--- a/platform/diff-impl/src/com/intellij/diff/requests/UnknownFileTypeDiffRequest.java
+++ b/platform/diff-impl/src/com/intellij/diff/requests/UnknownFileTypeDiffRequest.java
@@ -22,6 +22,8 @@ import com.intellij.openapi.fileTypes.FileType;
 import com.intellij.openapi.fileTypes.FileTypeManager;
 import com.intellij.openapi.fileTypes.UnknownFileType;
 import com.intellij.openapi.fileTypes.ex.FileTypeChooser;
+import com.intellij.openapi.project.DumbModePermission;
+import com.intellij.openapi.project.DumbService;
 import com.intellij.openapi.vcs.changes.issueLinks.LinkMouseListenerBase;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.ui.SimpleColoredComponent;
@@ -46,11 +48,6 @@ public class UnknownFileTypeDiffRequest extends ComponentDiffRequest {
     myTitle = title;
   }
 
-  public UnknownFileTypeDiffRequest(@Nullable String title) {
-    myFileName = null;
-    myTitle = title;
-  }
-
   @NotNull
   @Override
   public JComponent getComponent(@NotNull final DiffContext context) {
@@ -61,8 +58,13 @@ public class UnknownFileTypeDiffRequest extends ComponentDiffRequest {
       label.append("Associate", SimpleTextAttributes.LINK_ATTRIBUTES, new Runnable() {
         @Override
         public void run() {
-          FileType type = FileTypeChooser.associateFileType(myFileName);
-          if (type != null) onSuccess(context);
+          DumbService.allowStartingDumbModeInside(DumbModePermission.MAY_START_BACKGROUND, new Runnable() {
+            @Override
+            public void run() {
+              FileType type = FileTypeChooser.associateFileType(myFileName);
+              if (type != null) onSuccess(context);
+            }
+          });
         }
       });
       LinkMouseListenerBase.installSingleTagOn(label);