Show status bubble for links that have keyboard focus....

chrome/renderer/render_view.h

 // Copyright (c) 2009 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_RENDER_VIEW_H_
 #define CHROME_RENDERER_RENDER_VIEW_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 222 matching lines @@
       WebKit::WebFrame* frame, const WebKit::WebString& message);
   virtual bool runModalPromptDialog(
       WebKit::WebFrame* frame, const WebKit::WebString& message,
       const WebKit::WebString& default_value, WebKit::WebString* actual_value);
   virtual bool runModalBeforeUnloadDialog(
       WebKit::WebFrame* frame, const WebKit::WebString& message);
   virtual void showContextMenu(
       WebKit::WebFrame* frame, const WebKit::WebContextMenuData& data);
   virtual void setStatusText(const WebKit::WebString& text);
   virtual void setMouseOverURL(const WebKit::WebURL& url);
+  virtual void setKeyboardFocusURL(const WebKit::WebURL& url);
   virtual void setToolTipText(
       const WebKit::WebString& text, WebKit::WebTextDirection hint);
   virtual void startDragging(
       const WebKit::WebPoint& from, const WebKit::WebDragData& data,
       WebKit::WebDragOperationsMask mask);
   virtual bool acceptsLoadDrops();
   virtual void focusNext();
   virtual void focusPrevious();
   virtual void navigateBackForwardSoon(int offset);
   virtual int historyBackListCount();
@@ skipping 473 matching lines @@
 #else
   void UpdateFontRenderingFromRendererPrefs() { }
 #endif
 
   // Inject toolstrip CSS for extension moles and toolstrips.
   void InjectToolstripCSS();
 
   // Initializes the document_tag_ member if necessary.
   void EnsureDocumentTag();
 
+  // Update the target url and tell the browser that the target URL has changed.
+  // If |url| is empty, show |fallback_url|.
+  void UpdateTargetURL(const GURL& url, const GURL& fallback_url);
+
   // Bitwise-ORed set of extra bindings that have been enabled.  See
   // BindingsPolicy for details.
   int enabled_bindings_;
 
   // DOM Automation Controller CppBoundClass.
   DomAutomationController dom_automation_controller_;
 
   // Chrome page<->browser messaging CppBoundClass.
   DOMUIBindings dom_ui_bindings_;
 
   // External host exposed through automation controller.
   ExternalHostBindings external_host_bindings_;
 
   // The last gotten main frame's encoding.
   std::string last_encoding_name_;
 
-  // The URL we think the user's mouse is hovering over. We use this to
+  // The URL we show the user in the status bar. We use this to
   // determine if we want to send a new one (we do not need to send
-  // duplicates).
+  // duplicates). It will be equal to either |mouse_over_url_| or |focus_url_|,
+  // depending on which was updated last.
   GURL target_url_;
+  // The URL the user's mouse is hovering over.
+  GURL mouse_over_url_;
+  // The URL that has keyboard focus.
+  GURL focus_url_;
 
   // The state of our target_url transmissions. When we receive a request to
   // send a URL to the browser, we set this to TARGET_INFLIGHT until an ACK
   // comes back - if a new request comes in before the ACK, we store the new
   // URL in pending_target_url_ and set the status to TARGET_PENDING. If an
   // ACK comes back and we are in TARGET_PENDING, we send the stored URL and
   // revert to TARGET_INFLIGHT.
   //
   // We don't need a queue of URLs to send, as only the latest is useful.
   enum {
@@ skipping 217 matching lines @@
   // ImageResourceFetchers schedule via DownloadImage.
   typedef std::set<webkit_glue::ImageResourceFetcher*> ImageResourceFetcherSet;
   ImageResourceFetcherSet image_fetchers_;
 
   typedef std::map<WebKit::WebView*, RenderView*> ViewMap;
 
   DISALLOW_COPY_AND_ASSIGN(RenderView);
 };
 
 #endif  // CHROME_RENDERER_RENDER_VIEW_H_