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chrome/renderer/net/net_error_helper_core.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_NET_NET_ERROR_HELPER_CORE_H_
 #define CHROME_RENDERER_NET_NET_ERROR_HELPER_CORE_H_
 
 #include <string>
 
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
+#include "chrome/common/localized_error.h"
 #include "chrome/common/net/net_error_info.h"
 #include "url/gurl.h"
 
+namespace base {
+class ListValue;
+}
+
 namespace blink {
 struct WebURLError;
 }
 
 // Class that contains the logic for how the NetErrorHelper.  This allows for
 // testing the logic without a RenderView or WebFrame, which are difficult to
 // mock, and for testing races which are impossible to reliably reproduce
 // with real RenderViews or WebFrames.
 class NetErrorHelperCore {
  public:
   enum FrameType {
     MAIN_FRAME,
     SUB_FRAME,
   };
 
   enum PageType {
     NON_ERROR_PAGE,
     ERROR_PAGE,
   };
 
   // The Delegate handles all interaction with the RenderView, WebFrame, and
   // the network, as well as the generation of error pages.
   class Delegate {
    public:
     // Generates an error page's HTML for the given error.
-    virtual void GenerateLocalizedErrorPage(const blink::WebURLError& error,
-                                            bool is_failed_post,
-                                            std::string* html) const = 0;
+    virtual void GenerateLocalizedErrorPage(
+        const blink::WebURLError& error,
+        bool is_failed_post,
+        scoped_ptr<LocalizedError::ErrorPageParams> params,
+        std::string* html) const = 0;
 
     // Loads the given HTML in the main frame for use as an error page.
     virtual void LoadErrorPageInMainFrame(const std::string& html,
                                           const GURL& failed_url) = 0;
 
     // Updates the currently displayed error page with a new error code.  The
     // currently displayed error page must have finished loading, and must have
     // been generated by a call to GenerateLocalizedErrorPage.
     virtual void UpdateErrorPage(const blink::WebURLError& error,
                                  bool is_failed_post) = 0;
 
     // Fetches an error page and calls into OnErrorPageFetched when done.  Any
     // previous fetch must either be canceled or finished before calling.  Can't
     // be called synchronously after a previous fetch completes.
-    virtual void FetchErrorPage(const GURL& url) = 0;
+    virtual void FetchNavigationCorrections(
+        const GURL& navigation_correction_url,
+        const std::string& navigation_correction_request_body) = 0;
 
-    // Cancels an error page fetch.  Does nothing if no fetch is ongoing.
-    virtual void CancelFetchErrorPage() = 0;
+    // Cancels fetching navigation corrections.  Does nothing if no fetch is
+    // ongoing.
+    virtual void CancelFetchNavigationCorrections() = 0;
 
    protected:
     virtual ~Delegate() {}
   };
 
   explicit NetErrorHelperCore(Delegate* delegate);
   ~NetErrorHelperCore();
 
   // Examines |frame| and |error| to see if this is an error worthy of a DNS
   // probe.  If it is, initializes |error_strings| based on |error|,
   // |is_failed_post|, and |locale| with suitable strings and returns true.
   // If not, returns false, in which case the caller should look up error
   // strings directly using LocalizedError::GetNavigationErrorStrings.
   //
   // Updates the NetErrorHelper with the assumption the page will be loaded
   // immediately.
   void GetErrorHTML(FrameType frame_type,
                     const blink::WebURLError& error,
                     bool is_failed_post,
                     std::string* error_html);
 
   // These methods handle tracking the actual state of the page.
   void OnStartLoad(FrameType frame_type, PageType page_type);
   void OnCommitLoad(FrameType frame_type);
   void OnFinishLoad(FrameType frame_type);
   void OnStop();
 
   // Called when an error page have has been retrieved over the network.  |html|
   // must be an empty string on error.
-  void OnAlternateErrorPageFetched(const std::string& html);
+  void OnNavigationCorrectionsFetched(const std::string& corrections,
+                                      const std::string& accept_languages,
+                                      bool is_rtl);
 
   // Notifies |this| that network error information from the browser process
   // has been received.
   void OnNetErrorInfo(chrome_common_net::DnsProbeStatus status);
 
-  void set_alt_error_page_url(const GURL& alt_error_page_url) {
-    alt_error_page_url_ = alt_error_page_url;
-  }
+  void OnSetNavigationCorrectionInfo(const GURL& navigation_correction_url,
+                                     const std::string& language,
+                                     const std::string& country_code,
+                                     const std::string& api_key,
+                                     const GURL& search_url);
 
  private:
   struct ErrorPageInfo;
 
   // Updates the currently displayed error page with a new error based on the
   // most recently received DNS probe result.  The page must have finished
   // loading before this is called.
   void UpdateErrorPage();
 
   void GenerateLocalErrorPage(
       FrameType frame_type,
       const blink::WebURLError& error,
       bool is_failed_post,
+      scoped_ptr<LocalizedError::ErrorPageParams> params,
       std::string* error_html);
 
   blink::WebURLError GetUpdatedError(const blink::WebURLError& error) const;
 
   Delegate* delegate_;
 
   // The last DnsProbeStatus received from the browser.
   chrome_common_net::DnsProbeStatus last_probe_status_;
 
   // Information for the provisional / "pre-provisional" error page.  NULL when
   // there's no page pending, or the pending page is not an error page.
   scoped_ptr<ErrorPageInfo> pending_error_page_info_;
 
   // Information for the committed error page.  NULL when the committed page is
   // not an error page.
   scoped_ptr<ErrorPageInfo> committed_error_page_info_;
 
-  GURL alt_error_page_url_;
+  GURL navigation_correction_url_;
+  std::string language_;
+  std::string country_code_;
+  std::string api_key_;
+  GURL search_url_;
 };
 
 #endif  // CHROME_RENDERER_NET_NET_ERROR_HELPER_CORE_H_