Send RenameFeedback.

pkg/analysis_server/lib/src/edit/edit_domain.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library edit.domain;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/constants.dart';
 import 'package:analysis_server/src/protocol.dart';
 import 'package:analysis_server/src/protocol2.dart' show AnalysisError,
-    EditGetAssistsParams, EditGetAssistsResult,
-    EditGetAvailableRefactoringsParams, EditGetAvailableRefactoringsResult,
-    EditGetFixesParams, EditGetFixesResult, EditGetRefactoringParams,
-    EditGetRefactoringResult, ErrorFixes, LinkedEditGroup, Location,
-    RefactoringKind, RefactoringProblem, RefactoringProblemSeverity,
-    RenameOptions, SourceChange;
+    EditGetAssistsParams, EditGetAssistsResult, EditGetAvailableRefactoringsParams,
+    EditGetAvailableRefactoringsResult, EditGetFixesParams, EditGetFixesResult,
+    EditGetRefactoringParams, EditGetRefactoringResult, ErrorFixes, LinkedEditGroup,
+    Location, RefactoringKind, RefactoringProblem, RefactoringProblemSeverity,
+    RenameOptions, RenameFeedback, SourceChange;
 import 'package:analysis_server/src/services/correction/assist.dart';
 import 'package:analysis_server/src/services/correction/fix.dart';
 import 'package:analysis_server/src/services/correction/status.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:analysis_server/src/services/search/search_engine.dart';
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart' as engine;
 import 'package:analyzer/src/generated/error.dart' as engine;
 import 'package:analyzer/src/generated/source.dart';
@@ skipping 136 matching lines @@
  */
 class _RefactoringManager {
   final AnalysisServer server;
   final SearchEngine searchEngine;
 
   RefactoringKind kind;
   String file;
   int offset;
   int length;
   Refactoring refactoring;
+  Object feedback;
   RefactoringStatus initStatus;
   RefactoringStatus optionsStatus;
   RefactoringStatus finalStatus;
 
   String requestId;
   EditGetRefactoringResult result;
 
   _RefactoringManager(this.server, this.searchEngine) {
     _reset();
   }
@@ skipping 26 matching lines @@
       if (params.validateOnly) {
         return _sendResultResponse();
       }
       // validation and create change
       refactoring.checkFinalConditions().then((_finalStatus) {
         finalStatus = _finalStatus;
         if (_hasFatalError) {
           return _sendResultResponse();
         }
         return refactoring.createChange().then((change) {
-          result.change = new SourceChange(
-              change.message,
-              edits: change.edits);
+          result.change = new SourceChange(change.message, edits: change.edits);
           return _sendResultResponse();
         });
       });
     });
   }
 
   /**
    * Initializes this context to perform a refactoring with the specified
    * parameters. The existing [Refactoring] is reused or created as needed.
    */
   Future<RefactoringStatus> _init(RefactoringKind kind, String file, int offset,
       int length) {
     List<RefactoringProblem> problems = <RefactoringProblem>[];
     // check if we can continue with the existing Refactoring instance
     if (this.kind == kind &&
         this.file == file &&
         this.offset == offset &&
         this.length == length) {
       return new Future.value(initStatus);
     }
     _reset();
     this.kind = kind;
     this.file = file;
     this.offset = offset;
     this.length = length;
     // create a new Refactoring instance
     if (kind == RefactoringKind.RENAME) {
+      List<AstNode> nodes = server.getNodesAtOffset(file, offset);
       List<Element> elements = server.getElementsAtOffset(file, offset);
-      if (elements.isNotEmpty) {
+      if (nodes.isNotEmpty && elements.isNotEmpty) {
+        AstNode node = nodes[0];
         Element element = elements[0];
         refactoring = new RenameRefactoring(searchEngine, element);
+        feedback = new RenameFeedback(node.offset, node.length);
       }
     }
     if (refactoring == null) {
       initStatus =
           new RefactoringStatus.fatal('Unable to create a refactoring');
       return new Future.value(initStatus);
     }
     // check initial conditions
     return refactoring.checkInitialConditions().then((status) {
       initStatus = status;
       return initStatus;
     });
   }
 
   void _reset() {
     refactoring = null;
+    feedback = null;
     initStatus = new RefactoringStatus();
     optionsStatus = new RefactoringStatus();
     finalStatus = new RefactoringStatus();
   }
 
   void _sendResultResponse() {
+    result.feedback = feedback;
     // set problems
     {
       RefactoringStatus status = new RefactoringStatus();
       status.addStatus(initStatus);
       status.addStatus(optionsStatus);
       status.addStatus(finalStatus);
       result.problems = status.problems;
     }
     // send the response
     server.sendResponse(result.toResponse(requestId));
     // done with this request
     requestId = null;
     result = null;
   }
 
   RefactoringStatus _setOptions(Object options) {
     if (refactoring is RenameRefactoring) {
       RenameRefactoring renameRefactoring = refactoring;
       RenameOptions renameOptions = options;
       String newName = renameOptions.newName;
       renameRefactoring.newName = newName;
       return renameRefactoring.checkNewName();
     }
     return new RefactoringStatus();
   }
 }