From 6920e3bd08fca36c29ac30ca6aee5c9fa938d639 Mon Sep 17 00:00:00 2001
From: Nikolay Krasko <nikolay.krasko@jetbrains.com>
Date: Wed, 8 Aug 2018 16:07:49 +0300
Subject: [PATCH] Prototype version for code style notifications (KT-23400)

Show information about code style update, when it is actually updated.
---
 .../ui/KotlinConfigurationCheckerComponent.kt |  8 ++-
 .../notifications/NewCodeStyleNotification.kt | 52 +++++++++++++++++++
 2 files changed, 59 insertions(+), 1 deletion(-)
 create mode 100644 idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/notifications/NewCodeStyleNotification.kt

diff --git a/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/KotlinConfigurationCheckerComponent.kt b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/KotlinConfigurationCheckerComponent.kt
index 514d7cfd0d4..30a57709f10 100644
--- a/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/KotlinConfigurationCheckerComponent.kt
+++ b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/KotlinConfigurationCheckerComponent.kt
@@ -27,7 +27,11 @@ import com.intellij.openapi.project.Project
 import com.intellij.openapi.roots.ModuleRootEvent
 import com.intellij.openapi.roots.ModuleRootListener
 import com.intellij.openapi.startup.StartupManager
-import org.jetbrains.kotlin.idea.configuration.*
+import org.jetbrains.kotlin.idea.configuration.checkHideNonConfiguredNotifications
+import org.jetbrains.kotlin.idea.configuration.getModulesWithKotlinFiles
+import org.jetbrains.kotlin.idea.configuration.notifyOutdatedBundledCompilerIfNecessary
+import org.jetbrains.kotlin.idea.configuration.showConfigureKotlinNotificationIfNeeded
+import org.jetbrains.kotlin.idea.configuration.ui.notifications.notifyKotlinStyleUpdateIfNeeded
 import org.jetbrains.kotlin.idea.project.getAndCacheLanguageLevelByDependencies
 import org.jetbrains.kotlin.idea.versions.collectModulesWithOutdatedRuntime
 import org.jetbrains.kotlin.idea.versions.findOutdatedKotlinLibraries
@@ -68,6 +72,8 @@ class KotlinConfigurationCheckerComponent(project: Project) : AbstractProjectCom
         connection.subscribe(ProjectDataImportListener.TOPIC, ProjectDataImportListener {
             notifyOutdatedBundledCompilerIfNecessary(project)
         })
+
+        notifyKotlinStyleUpdateIfNeeded(project)
     }
 
     override fun projectOpened() {
diff --git a/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/notifications/NewCodeStyleNotification.kt b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/notifications/NewCodeStyleNotification.kt
new file mode 100644
index 00000000000..50ffa1b928b
--- /dev/null
+++ b/idea/idea-jvm/src/org/jetbrains/kotlin/idea/configuration/ui/notifications/NewCodeStyleNotification.kt
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2000-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.idea.configuration.ui.notifications
+
+import com.intellij.ide.util.PropertiesComponent
+import com.intellij.notification.Notification
+import com.intellij.notification.NotificationDisplayType
+import com.intellij.notification.NotificationType
+import com.intellij.notification.NotificationsConfiguration
+import com.intellij.openapi.application.ApplicationManager
+import com.intellij.openapi.project.Project
+import org.jetbrains.kotlin.idea.util.isDefaultOfficialCodeStyle
+
+private const val KOTLIN_UPDATE_CODE_STYLE_GROUP_ID = "Update Kotlin code style"
+private const val KOTLIN_UPDATE_CODE_STYLE_PROPERTY_NAME = "update.kotlin.code.style.notified"
+
+fun notifyKotlinStyleUpdateIfNeeded(project: Project) {
+    if (PropertiesComponent.getInstance(project).getBoolean(KOTLIN_UPDATE_CODE_STYLE_PROPERTY_NAME, false)) {
+        return
+    }
+
+    if (!isDefaultOfficialCodeStyle) return
+
+    NotificationsConfiguration.getNotificationsConfiguration()
+        .register(KOTLIN_UPDATE_CODE_STYLE_GROUP_ID, NotificationDisplayType.STICKY_BALLOON, true)
+
+    val notification = KotlinCodeStyleChangedNotification(project)
+    notification.isImportant = true
+
+    if (ApplicationManager.getApplication().isUnitTestMode) {
+        return
+    }
+
+    PropertiesComponent.getInstance(project).setValue(KOTLIN_UPDATE_CODE_STYLE_PROPERTY_NAME, true, false)
+
+    notification.notify(project)
+}
+
+private class KotlinCodeStyleChangedNotification(val project: Project) : Notification(
+    KOTLIN_UPDATE_CODE_STYLE_GROUP_ID,
+    "Kotlin Code Style",
+    """
+        <html>
+        Default code style was updated to Kotlin Coding Conventions.
+        </html>
+        """.trimIndent(),
+    NotificationType.WARNING,
+    null
+)
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