Introduce wrapper for EditorFactoryListener to warn about compatibility issues

.idea/inspectionProfiles/idea_default.xml

@@ -116,6 +116,7 @@
           <Problem reference="com.intellij.openapi.extensions.ExtensionPointName#getPoint" reason="Absent in 182." />
           <Problem reference="com.intellij.openapi.extensions.ExtensionPointName#findExtensionOrFail" reason="Absent in 182." />
           <Problem reference="com.intellij.openapi.ui.popup.PopupChooserBuilder#PopupChooserBuilder(javax.swing.JList)" reason="Generified in 182. Use PopupChooserBuilderWrapper instead." />
+          <Problem reference="com.intellij.openapi.editor.event.EditorFactoryListener" reason="Default implementations were added in 183. Use EditorFactoryListenerWrapper for inheritance instead." />
         </list>
       </option>
     </inspection_tool>

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/LookupCancelWatcher.kt

@@ -28,9 +28,9 @@ import com.intellij.openapi.editor.RangeMarker
 import com.intellij.openapi.editor.event.CaretEvent
 import com.intellij.openapi.editor.event.CaretListener
 import com.intellij.openapi.editor.event.EditorFactoryEvent
-import com.intellij.openapi.editor.event.EditorFactoryListener
 import com.intellij.openapi.project.Project
 import com.intellij.openapi.util.Key
+import org.jetbrains.kotlin.idea.util.compat.EditorFactoryListenerWrapper
 
 class LookupCancelWatcher(val project: Project) : ProjectComponent {
     private class Reminiscence(editor: Editor, offset: Int) {
@@ -105,17 +105,12 @@ class LookupCancelWatcher(val project: Project) : ProjectComponent {
 
     override fun initComponent() {
         EditorFactory.getInstance().addEditorFactoryListener(
-            object : EditorFactoryListener {
+            object : EditorFactoryListenerWrapper {
                 override fun editorReleased(event: EditorFactoryEvent) {
                     if (lastReminiscence?.editor == event.editor) {
                         lastReminiscence!!.dispose()
                     }
                 }
-
-                override fun editorCreated(event: EditorFactoryEvent) {
-                    // BUNCH: 182 Has default implementation since 183
-                    // Do nothing
-                }
             },
             project
         )

idea/src/org/jetbrains/kotlin/idea/util/compat/EditorFactoryListenerWrapper.java.182

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2019 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.util.compat;
+
+import com.intellij.openapi.editor.event.EditorFactoryEvent;
+import com.intellij.openapi.editor.event.EditorFactoryListener;
+import org.jetbrains.annotations.NotNull;
+
+// Default implementation for interface methods were added in 183.
+// BUNCH: 182
+@SuppressWarnings("IncompatibleAPI")
+public interface EditorFactoryListenerWrapper extends EditorFactoryListener {
+    @Override
+    default void editorCreated(@NotNull EditorFactoryEvent event) {
+    }
+
+    @Override
+    default void editorReleased(@NotNull EditorFactoryEvent event) {
+    }
+}
+
+

idea/src/org/jetbrains/kotlin/idea/util/compat/EditorFactoryListenerWrapper.kt

@@ -0,0 +1,14 @@
+/*
+ * Copyright 2010-2019 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.
+ */
+
+@file:Suppress("IncompatibleAPI")
+
+package org.jetbrains.kotlin.idea.util.compat
+
+import com.intellij.openapi.editor.event.EditorFactoryListener
+
+// Default implementation for interface methods were added in 183.
+// BUNCH: 182
+typealias EditorFactoryListenerWrapper = EditorFactoryListener