From 22ea11d7d83421229eee8d1fb0aa312be856c27d Mon Sep 17 00:00:00 2001
From: Tagir Valeev <Tagir.Valeev@jetbrains.com>
Date: Mon, 18 Sep 2017 17:40:25 +0700
Subject: [PATCH] ShowImageDuplicatesAction: run in read action

Partially fixes IDEA-87372
---
 .../src/com/intellij/internal/ShowImageDuplicatesAction.java  | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/internal/ShowImageDuplicatesAction.java b/platform/lang-impl/src/com/intellij/internal/ShowImageDuplicatesAction.java
index da172c7f9c5d..d67abb0dd1e8 100644
--- a/platform/lang-impl/src/com/intellij/internal/ShowImageDuplicatesAction.java
+++ b/platform/lang-impl/src/com/intellij/internal/ShowImageDuplicatesAction.java
@@ -18,6 +18,7 @@ package com.intellij.internal;
 import com.intellij.openapi.actionSystem.AnAction;
 import com.intellij.openapi.actionSystem.AnActionEvent;
 import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.application.ReadAction;
 import com.intellij.openapi.progress.ProgressIndicator;
 import com.intellij.openapi.progress.ProgressManager;
 import com.intellij.openapi.project.Project;
@@ -40,7 +41,8 @@ public class ShowImageDuplicatesAction extends AnAction {
   public void actionPerformed(AnActionEvent e) {
     final Project project = getEventProject(e);
     assert project != null;
-    ProgressManager.getInstance().runProcessWithProgressSynchronously(() -> collectAndShowDuplicates(project), "Gathering images", true, project);
+    ProgressManager.getInstance().runProcessWithProgressSynchronously(
+      () -> ReadAction.run(() -> collectAndShowDuplicates(project)), "Gathering images", true, project);
   }
 
   private static void collectAndShowDuplicates(final Project project) {