Instant Extended: Fallback to local preview if the remote instant page is not ready on user input.

chrome/browser/instant/instant_client.h

 // Copyright 2012 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_BROWSER_INSTANT_INSTANT_CLIENT_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_CLIENT_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 50 matching lines @@
     // Called when the underlying RenderView crashes.
     virtual void RenderViewGone() = 0;
 
     // Called when the page is about to navigate.
     virtual void AboutToNavigateMainFrame(const GURL& url) = 0;
 
     // Called when the SearchBox wants to navigate to the specified URL.
     virtual void NavigateToURL(const GURL& url,
                                content::PageTransition transition) = 0;
 
+    // Called when a RenderView is created, so that state can be initialized.
+    virtual void RenderViewCreated(content::RenderViewHost* host) = 0;
+
    protected:
     virtual ~Delegate();
   };
 
   // Doesn't take ownership of |delegate|.
   explicit InstantClient(Delegate* delegate);
   virtual ~InstantClient();
 
   // Sets |contents| as the page to communicate with. |contents| can be NULL,
   // which effectively stops all communication.
@@ skipping 16 matching lines @@
   void Cancel(const string16& text);
 
   // Tells the page the bounds of the omnibox dropdown (in screen coordinates).
   // This is used by the page to offset the results to avoid them being covered
   // by the omnibox dropdown.
   void SetPopupBounds(const gfx::Rect& bounds);
 
   // Tells the page what size start and end margins to use.
   void SetMarginSize(const int start, const int end);
 
+  // Tells the page about the font information.
+  void InitializeFonts();
+
   // Tells the renderer to determine if the page supports the Instant API, which
   // results in a call to InstantSupportDetermined() when the reply is received.
   void DetermineIfPageSupportsInstant();
 
   // Tells the page about the available autocomplete results.
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
 
   // Tells the page that the user pressed Up or Down in the omnibox. |count| is
   // a repeat count, negative for moving up, positive for moving down.
   void UpOrDownKeyPressed(int count);
 
   // Tells the page that the active tab's search mode has changed.
   void SearchModeChanged(const chrome::search::Mode& mode);
 
   // Tells the page about the current theme background.
   void SendThemeBackgroundInfo(const ThemeBackgroundInfo& theme_info);
 
   // Tells the page about the current theme area height.
   void SendThemeAreaHeight(int height);
 
   // Tells the page whether it is allowed to display Instant results.
   void SetDisplayInstantResults(bool display_instant_results);
 
   // Tells the page whether the browser is capturing user key strokes.
   void KeyCaptureChanged(bool is_key_capture_enabled);
 
  private:
   // Overridden from content::WebContentsObserver:
+  virtual void RenderViewCreated(
+      content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void DidFinishLoad(
       int64 frame_id,
       const GURL& validated_url,
       bool is_main_frame,
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
   virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
   virtual void DidCommitProvisionalLoadForFrame(
       int64 frame_id,
       bool is_main_frame,
@@ skipping 12 matching lines @@
   void StopCapturingKeyStrokes(int page_id);
   void SearchBoxNavigate(int page_id, const GURL& url,
                          content::PageTransition transition);
 
   Delegate* const delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantClient);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_CLIENT_H_