added dummy inlay model implementation for injected editors, to avoid potential bugs

errors will still be logged on usage of inlay model for an injected editor

platform/lang-impl/src/com/intellij/injected/editor/EditorWindowImpl.java

@@ -78,6 +78,7 @@ public class EditorWindowImpl extends UserDataHolderBase implements EditorWindow
   private final MarkupModelWindow myDocumentMarkupModelDelegate;
   private final FoldingModelWindow myFoldingModelWindow;
   private final SoftWrapModelWindow mySoftWrapModel;
+  private final InlayModelWindow myInlayModel;
 
   public static Editor create(@NotNull final DocumentWindowImpl documentRange, @NotNull final EditorImpl editor, @NotNull final PsiFile injectedFile) {
     assert documentRange.isValid();
@@ -116,6 +117,7 @@ public class EditorWindowImpl extends UserDataHolderBase implements EditorWindow
     myDocumentMarkupModelDelegate = new MarkupModelWindow(myDelegate.getFilteredDocumentMarkupModel(), myDocumentWindow);
     myFoldingModelWindow = new FoldingModelWindow(delegate.getFoldingModel(), documentWindow, this);
     mySoftWrapModel = new SoftWrapModelWindow(this);
+    myInlayModel = new InlayModelWindow();
   }
 
   public static void disposeInvalidEditors() {
@@ -304,7 +306,7 @@ public class EditorWindowImpl extends UserDataHolderBase implements EditorWindow
   @NotNull
   @Override
   public InlayModel getInlayModel() {
-    throw new UnsupportedOperationException();
+    return myInlayModel;
   }
 
   @Override

platform/lang-impl/src/com/intellij/injected/editor/InlayModelWindow.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.injected.editor;
+
+import com.intellij.openapi.Disposable;
+import com.intellij.openapi.diagnostic.Logger;
+import com.intellij.openapi.editor.EditorCustomElementRenderer;
+import com.intellij.openapi.editor.Inlay;
+import com.intellij.openapi.editor.InlayModel;
+import com.intellij.openapi.editor.VisualPosition;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.Collections;
+import java.util.List;
+
+public class InlayModelWindow implements InlayModel {
+  private static final Logger LOG = Logger.getInstance(InlayModelWindow.class);
+
+  @Nullable
+  @Override
+  public Inlay addInlineElement(int offset, @NotNull EditorCustomElementRenderer renderer) {
+    logUnsupported();
+    return null;
+  }
+
+  @NotNull
+  @Override
+  public List<Inlay> getInlineElementsInRange(int startOffset, int endOffset) {
+    logUnsupported();
+    return Collections.emptyList();
+  }
+
+  @Override
+  public boolean hasInlineElementAt(int offset) {
+    logUnsupported();
+    return false;
+  }
+
+  @Override
+  public boolean hasInlineElementAt(@NotNull VisualPosition visualPosition) {
+    logUnsupported();
+    return false;
+  }
+
+  @Override
+  public void addListener(@NotNull Listener listener, @NotNull Disposable disposable) {
+    logUnsupported();
+  }
+
+  private static void logUnsupported() {
+    LOG.error("Inlay operations are not supported for injected editors");
+  }
+}