Initial implementation of copy/paste support

pkg/analysis_server/lib/src/domain_analysis.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.
 
 import 'dart:async';
 import 'dart:core';
 
 import 'package:analysis_server/plugin/analysis/analysis_domain.dart';
 import 'package:analysis_server/protocol/protocol_constants.dart';
 import 'package:analysis_server/src/analysis_server.dart';
 import 'package:analysis_server/src/computer/computer_hover.dart';
+import 'package:analysis_server/src/computer/imported_elements_computer.dart';
 import 'package:analysis_server/src/domain_abstract.dart';
 import 'package:analysis_server/src/domains/analysis/navigation.dart';
 import 'package:analysis_server/src/domains/analysis/navigation_dart.dart';
 import 'package:analysis_server/src/plugin/plugin_manager.dart';
 import 'package:analysis_server/src/plugin/request_converter.dart';
 import 'package:analysis_server/src/plugin/result_merger.dart';
 import 'package:analysis_server/src/protocol/protocol_internal.dart';
 import 'package:analysis_server/src/protocol_server.dart';
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/error/error.dart' as engine;
@@ skipping 71 matching lines @@
         hovers.add(hoverInformation);
       }
     }
 
     // Send the response.
     server.sendResponse(
         new AnalysisGetHoverResult(hovers).toResponse(request.id));
   }
 
   /**
+   * Implement the `analysis.getImportedElements` request.
+   */
+  Future<Null> getImportedElements(Request request) async {
+    AnalysisGetImportedElementsParams params =
+        new AnalysisGetImportedElementsParams.fromRequest(request);
+    //
+    // Prepare the resolved unit.
+    //
+    AnalysisResult result = await server.getAnalysisResult(params.file);
+    if (result == null) {
+      server.sendResponse(new Response.getImportedElementsInvalidFile(request));
+    }
+    //
+    // Compute the list of imported elements.
+    //
+    List<ImportedElements> elements =
+        new ImportedElementsComputer(result.unit, params.offset, params.length)
+            .compute();
+    //
+    // Send the response.
+    //
+    server.sendResponse(
+        new AnalysisGetImportedElementsResult(elements).toResponse(request.id));
+  }
+
+  /**
    * Implement the `analysis.getLibraryDependencies` request.
    */
   Response getLibraryDependencies(Request request) {
     return new Response.unsupportedFeature(request.id,
         'Please contact the Dart analyzer team if you need this request.');
 //    server.onAnalysisComplete.then((_) {
 //      LibraryDependencyCollector collector =
 //          new LibraryDependencyCollector(server.analysisContexts);
 //      Set<String> libraries = collector.collectLibraryDependencies();
 //      Map<String, Map<String, List<String>>> packageMap =
@@ skipping 96 matching lines @@
   @override
   Response handleRequest(Request request) {
     try {
       String requestName = request.method;
       if (requestName == ANALYSIS_REQUEST_GET_ERRORS) {
         getErrors(request);
         return Response.DELAYED_RESPONSE;
       } else if (requestName == ANALYSIS_REQUEST_GET_HOVER) {
         getHover(request);
         return Response.DELAYED_RESPONSE;
+      } else if (requestName == ANALYSIS_REQUEST_GET_IMPORTED_ELEMENTS) {
+        getImportedElements(request);
+        return Response.DELAYED_RESPONSE;
       } else if (requestName == ANALYSIS_REQUEST_GET_LIBRARY_DEPENDENCIES) {
         return getLibraryDependencies(request);
       } else if (requestName == ANALYSIS_REQUEST_GET_NAVIGATION) {
         getNavigation(request);
         return Response.DELAYED_RESPONSE;
       } else if (requestName == ANALYSIS_REQUEST_GET_REACHABLE_SOURCES) {
         return getReachableSources(request);
       } else if (requestName == ANALYSIS_REQUEST_REANALYZE) {
         return reanalyze(request);
       } else if (requestName == ANALYSIS_REQUEST_SET_ANALYSIS_ROOTS) {
@@ skipping 201 matching lines @@
 
   AnalysisDomainImpl(this.server) {
     // TODO(brianwilkerson) The onContextsChanged stream is no longer written to.
     // Figure out whether this code still needs to be here and convert it to use
     // the analysis driver if it does.
 //    server.onContextsChanged.listen((ContextsChangedEvent event) {
 //      event.added.forEach(_subscribeForContext);
 //    });
   }
 }