From ca7c3b01e934a2c74e042c3c474c330070fc86ad Mon Sep 17 00:00:00 2001
From: Rustam Vishnyakov <rustam.vishnyakov@jetbrains.com>
Date: Thu, 12 Feb 2015 13:00:47 +0300
Subject: [PATCH] IDEA-136058 Show "Indent options for the file are
 overwritten" warning only when I try to edit a file

---
 ...ctedIndentOptionsNotificationProvider.java | 19 ++++++++++++++++++-
 .../codeStyle/CodeStyleManagerImpl.java       |  3 +++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/platform/lang-impl/src/com/intellij/psi/codeStyle/autodetect/DetectedIndentOptionsNotificationProvider.java b/platform/lang-impl/src/com/intellij/psi/codeStyle/autodetect/DetectedIndentOptionsNotificationProvider.java
index 078d8f5eff0f..aea68bf6d430 100644
--- a/platform/lang-impl/src/com/intellij/psi/codeStyle/autodetect/DetectedIndentOptionsNotificationProvider.java
+++ b/platform/lang-impl/src/com/intellij/psi/codeStyle/autodetect/DetectedIndentOptionsNotificationProvider.java
@@ -15,9 +15,11 @@
  */
 package com.intellij.psi.codeStyle.autodetect;
 
+import com.intellij.openapi.application.ApplicationManager;
 import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.editor.Editor;
 import com.intellij.openapi.fileEditor.FileEditor;
+import com.intellij.openapi.fileEditor.FileEditorManager;
 import com.intellij.openapi.fileEditor.TextEditor;
 import com.intellij.openapi.project.Project;
 import com.intellij.openapi.util.Key;
@@ -39,6 +41,7 @@ import static com.intellij.psi.codeStyle.EditorNotificationInfo.*;
  */
 public class DetectedIndentOptionsNotificationProvider extends EditorNotifications.Provider<EditorNotificationPanel> {
   private static final Key<EditorNotificationPanel> KEY = Key.create("indent.options.notification.provider");
+  private static final Key<Boolean> NOTIFIED_FLAG = Key.create("indent.options.notification.provider.status");
 
   @NotNull
   @Override
@@ -49,7 +52,8 @@ public class DetectedIndentOptionsNotificationProvider extends EditorNotificatio
   @Nullable
   @Override
   public EditorNotificationPanel createNotificationPanel(@NotNull final VirtualFile file, @NotNull FileEditor fileEditor) {
-    if (fileEditor instanceof TextEditor) {
+    Boolean notifiedFlag = fileEditor.getUserData(NOTIFIED_FLAG);
+    if (fileEditor instanceof TextEditor && notifiedFlag != null) {
       final Editor editor = ((TextEditor)fileEditor).getEditor();
       final Project project = editor.getProject();
       if (project != null) {
@@ -96,4 +100,17 @@ public class DetectedIndentOptionsNotificationProvider extends EditorNotificatio
     }
     return null;
   }
+
+  public static void updateIndentNotification(@NotNull PsiFile file, boolean enforce) {
+    if (!(ApplicationManager.getApplication().isHeadlessEnvironment() || ApplicationManager.getApplication().isUnitTestMode())) {
+      FileEditor fileEditor = FileEditorManager.getInstance(file.getProject()).getSelectedEditor(file.getVirtualFile());
+      if (fileEditor != null) {
+        Boolean notifiedFlag = fileEditor.getUserData(NOTIFIED_FLAG);
+        if (notifiedFlag == null || enforce) {
+          fileEditor.putUserData(NOTIFIED_FLAG, Boolean.TRUE);
+          EditorNotifications.getInstance(file.getProject()).updateNotifications(file.getVirtualFile());
+        }
+      }
+    }
+  }
 }
diff --git a/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerImpl.java b/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerImpl.java
index 8c824ab66a7a..14b134cc0f70 100644
--- a/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerImpl.java
+++ b/platform/lang-impl/src/com/intellij/psi/impl/source/codeStyle/CodeStyleManagerImpl.java
@@ -33,6 +33,7 @@ import com.intellij.openapi.util.TextRange;
 import com.intellij.psi.*;
 import com.intellij.psi.codeStyle.*;
 import com.intellij.psi.codeStyle.Indent;
+import com.intellij.psi.codeStyle.autodetect.DetectedIndentOptionsNotificationProvider;
 import com.intellij.psi.formatter.FormatterUtil;
 import com.intellij.psi.impl.CheckUtil;
 import com.intellij.psi.impl.source.PostprocessReformattingAspect;
@@ -237,6 +238,7 @@ public class CodeStyleManagerImpl extends CodeStyleManager {
     }
     if (editor instanceof EditorEx && isFullReformat) {
       ((EditorEx)editor).reinitSettings();
+      DetectedIndentOptionsNotificationProvider.updateIndentNotification(file, true);
     }
   }
 
@@ -314,6 +316,7 @@ public class CodeStyleManagerImpl extends CodeStyleManager {
 
   @Override
   public int adjustLineIndent(@NotNull final PsiFile file, final int offset) throws IncorrectOperationException {
+    DetectedIndentOptionsNotificationProvider.updateIndentNotification(file, false);
     return PostprocessReformattingAspect.getInstance(file.getProject()).disablePostprocessFormattingInside(new Computable<Integer>() {
       @Override
       public Integer compute() {