Don't optimize imports if formatting is disabled

java/java-impl/src/com/intellij/psi/impl/source/codeStyle/JavaCodeStyleManagerImpl.java

@@ -103,7 +103,7 @@ public class JavaCodeStyleManagerImpl extends JavaCodeStyleManager {
   @Override
   public void optimizeImports(@NotNull PsiFile file) throws IncorrectOperationException {
     CheckUtil.checkWritable(file);
-    if (file instanceof PsiJavaFile) {
+    if (file instanceof PsiJavaFile && CodeStyle.isFormattingEnabled(file)) {
       PsiImportList newList = prepareOptimizeImportsResult((PsiJavaFile)file);
       if (newList != null) {
         final PsiImportList importList = ((PsiJavaFile)file).getImportList();

java/java-tests/testData/psi/optimizeImports/DisabledFormatting.java

@@ -0,0 +1,9 @@
+import java.util.Date;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+  public List<String> foo(){
+    return new ArrayList<>();
+  }
+}

java/java-tests/testData/psi/optimizeImports/DisabledFormatting_after.java

@@ -0,0 +1,9 @@
+import java.util.Date;
+import java.util.ArrayList;
+import java.util.List;
+
+public class Main {
+  public List<String> foo(){
+    return new ArrayList<>();
+  }
+}

java/java-tests/testSrc/com/intellij/java/psi/OptimizeImportsTest.java

@@ -15,7 +15,10 @@
  */
 package com.intellij.java.psi;
 
+import com.intellij.application.options.CodeStyle;
+import com.intellij.formatting.fileSet.NamedScopeDescriptor;
 import com.intellij.openapi.application.ex.PathManagerEx;
+import com.intellij.psi.codeStyle.CodeStyleSettings;
 
 public class OptimizeImportsTest extends OptimizeImportsTestCase {
   private static final String BASE_PATH = PathManagerEx.getTestDataPath() + "/psi/optimizeImports";
@@ -61,6 +64,14 @@ public class OptimizeImportsTest extends OptimizeImportsTestCase {
     doTest();
   }
 
+  public void testDisabledFormatting() {
+    CodeStyleSettings temp = new CodeStyleSettings();
+    NamedScopeDescriptor descriptor = new NamedScopeDescriptor("Test");
+    descriptor.setPattern("file:*.java");
+    temp.getExcludedFiles().addDescriptor(descriptor);
+    CodeStyle.doWithTemporarySettings(getProject(), temp, () -> doTest());
+  }
+
   private void doTest() {
     doTest(".java");
   }