text: // Copyright 2011 Software Freedom Conservancy
  // 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.
  
  #ifndef WEBDRIVER_IE_GOBACKCOMMANDHANDLER_H_
  #define WEBDRIVER_IE_GOBACKCOMMANDHANDLER_H_
  
  #include "../Browser.h"
  #include "../IECommandHandler.h"
  #include "../IECommandExecutor.h"
  
  namespace webdriver {
  
  class GoBackCommandHandler : public IECommandHandler {
   public:
    GoBackCommandHandler(void) {
    }
  
    virtual ~GoBackCommandHandler(void) {
    }
  
   protected:
    void ExecuteInternal(const IECommandExecutor& executor,
                         const LocatorMap& locator_parameters,
                         const ParametersMap& command_parameters,
                         Response* response) {
      BrowserHandle browser_wrapper;
      int status_code = executor.GetCurrentBrowser(&browser_wrapper);
      if (status_code != SUCCESS) {
        response->SetErrorResponse(status_code, "Unable to get browser");
        return;
      }
      status_code = browser_wrapper->NavigateBack();
      response->SetSuccessResponse(Json::Value::null);
    }
  };
  
  } // namespace webdriver
  
  #endif // WEBDRIVER_IE_GOBACKCOMMANDHANDLER_H_
  