IDEA-102454 Parameter Info: TAB/Shift-TAB and editing does not work in language injected fragment

platform/lang-impl/src/com/intellij/codeInsight/hint/actions/InjectionAwareEditorAction.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2000-2013 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.codeInsight.hint.actions;
+
+import com.intellij.codeInsight.actions.BaseCodeInsightAction;
+import com.intellij.openapi.actionSystem.CommonDataKeys;
+import com.intellij.openapi.actionSystem.DataContext;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.actionSystem.EditorAction;
+import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
+import com.intellij.openapi.project.Project;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * @author ignatov
+ */
+public class InjectionAwareEditorAction extends EditorAction {
+  protected InjectionAwareEditorAction(EditorActionHandler defaultHandler) {
+    super(defaultHandler);
+  }
+
+  @Nullable
+  protected Editor getEditor(final DataContext dataContext) {
+    Editor editor = super.getEditor(dataContext);
+    Project project = CommonDataKeys.PROJECT.getData(dataContext);
+    Editor injected = project == null ? null : BaseCodeInsightAction.getInjectedEditor(project, editor);
+    return injected == null ? editor : injected;
+  }
+}

platform/lang-impl/src/com/intellij/codeInsight/hint/actions/NextParameterAction.java

@@ -17,12 +17,11 @@
 package com.intellij.codeInsight.hint.actions;
 
 import com.intellij.codeInsight.hint.PrevNextParameterHandler;
-import com.intellij.openapi.editor.actionSystem.EditorAction;
 
 /**
  * @author ven
  */
-public class NextParameterAction extends EditorAction {
+public class NextParameterAction extends InjectionAwareEditorAction {
   public NextParameterAction() {
     super(new PrevNextParameterHandler(true));
   }

platform/lang-impl/src/com/intellij/codeInsight/hint/actions/PrevParameterAction.java

@@ -17,12 +17,11 @@
 package com.intellij.codeInsight.hint.actions;
 
 import com.intellij.codeInsight.hint.PrevNextParameterHandler;
-import com.intellij.openapi.editor.actionSystem.EditorAction;
 
 /**
  * @author ven
  */
-public class PrevParameterAction extends EditorAction {
+public class PrevParameterAction extends InjectionAwareEditorAction {
   public PrevParameterAction() {
     super(new PrevNextParameterHandler(false));
   }