Add new promotional line for NTP....

chrome/browser/web_resource/web_resource_service.h

 // Copyright (c) 2010 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_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_
 #define CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_
 #pragma once
 
 #include <string>
 
 #include "base/file_path.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/utility_process_host.h"
 #include "chrome/common/web_resource/web_resource_unpacker.h"
 
 class Profile;
 
+namespace WebResourceServiceUtil {
+
+// Certain promotions should only be shown to certain classes of users. This
+// function will change to reflect each kind of promotion.
+bool CanShowPromo(Profile* profile);
+
+}  // namespace WebResourceService
+
 class WebResourceService
     : public UtilityProcessHost::Client {
  public:
   explicit WebResourceService(Profile* profile);
 
   // Sleep until cache needs to be updated, but always for at least 5 seconds
   // so we don't interfere with startup.  Then begin updating resources.
   void StartAfterDelay();
 
   // We have successfully pulled data from a resource server; now launch
@@ skipping 13 matching lines @@
   //         "inproduct": "Text here will be shown as a tip",
   //       },
   //       ...
   //     ]
   //   }
   // }
   //
   // Public for unit testing.
   void UnpackTips(const DictionaryValue& parsed_json);
 
-  // Unpack the web resource as a custom logo signal. Expects json in the form
-  // of:
+  // Unpack the web resource as a custom promo signal. Expects a start and end
+  // signal, with the promo to be shown in the tooltip of the start signal
+  // field. Delivery will be in json in the form of:
   // {
   //   "topic": {
   //     "answers": [
   //       {
-  //         "custom_logo_start": "31/12/10 01:00",
-  //         "custom_logo_end": "31/01/11 01:00"
+  //         "answer_id": "1067976",
+  //         "name": "promo_start",
+  //         "question": "",
+  //         "tooltip":
+  //       "Click \u003ca href=http://www.google.com\u003ehere\u003c/a\u003e!",
+  //         "inproduct": "10/8/09 12:00",
+  //         "inproduct_target": null
+  //       },
+  //       {
+  //         "answer_id": "1067976",
+  //         "name": "promo_end",
+  //         "question": "",
+  //         "tooltip": "",
+  //         "inproduct": "10/8/11 12:00",
+  //         "inproduct_target": null
+  //       },
+  //       ...
+  //     ]
+  //   }
+  // }
+  //
+  // Public for unit testing.
+  void UnpackPromoSignal(const DictionaryValue& parsed_json);
+
+  // Unpack the web resource as a custom logo signal. Expects a start and end
+  // signal. Delivery will be in json in the form of:
+  // {
+  //   "topic": {
+  //     "answers": [
+  //       {
+  //         "answer_id": "107366",
+  //         "name": "custom_logo_start",
+  //         "question": "",
+  //         "tooltip": "",
+  //         "inproduct": "10/8/09 12:00",
+  //         "inproduct_target": null
+  //       },
+  //       {
+  //         "answer_id": "107366",
+  //         "name": "custom_logo_end",
+  //         "question": "",
+  //         "tooltip": "",
+  //         "inproduct": "10/8/09 12:00",
+  //         "inproduct_target": null
   //       },
   //       ...
   //     ]
   //   }
   // }
   //
   // Public for unit testing.
   void UnpackLogoSignal(const DictionaryValue& parsed_json);
 
+  int cache_update_delay() const { return cache_update_delay_; }
+
   static const char* kCurrentTipPrefName;
   static const char* kTipCachePrefName;
 
-  // Default server from which to gather resources.
-  static const char* kDefaultResourceServer;
+  // Default server of dynamically loaded NTP HTML elements (promotions, tips):
+  static const char* kDefaultWebResourceServer;
 
  private:
   class WebResourceFetcher;
   friend class WebResourceFetcher;
 
   class UnpackerClient;
 
   ~WebResourceService();
 
   void Init();
 
   // Set in_fetch_ to false, clean up temp directories (in the future).
   void EndFetch();
 
   // Puts parsed json data in the right places, and writes to prefs file.
   void OnWebResourceUnpacked(const DictionaryValue& parsed_json);
 
   // We need to be able to load parsed resource data into preferences file,
   // and get proper install directory.
   PrefService* prefs_;
 
+  // Display and fetch of promo lines depends on data associated with a user's
+  // profile.
+  Profile* profile_;
+
   // Server from which we are currently pulling web resource data.
   std::string web_resource_server_;
 
   scoped_ptr<WebResourceFetcher> web_resource_fetcher_;
 
   ResourceDispatcherHost* resource_dispatcher_host_;
 
   // Gets mutable dictionary attached to user's preferences, so that we
   // can write resource data back to user's pref file.
   DictionaryValue* web_resource_cache_;
 
   // True if we are currently mid-fetch.  If we are asked to start a fetch
   // when we are still fetching resource data, schedule another one in
   // kCacheUpdateDelay time, and silently exit.
   bool in_fetch_;
 
-  // Delay on first fetch so we don't interfere with startup.
-  static const int kStartResourceFetchDelay = 5000;
-
-  // Delay between calls to update the cache (48 hours).
-  static const int kCacheUpdateDelay = 48 * 60 * 60 * 1000;
+  // Delay between calls to update the web resource cache. This delay may be
+  // different for different builds of Chrome.
+  int cache_update_delay_;
 
   DISALLOW_COPY_AND_ASSIGN(WebResourceService);
 };
 
 #endif  // CHROME_BROWSER_WEB_RESOURCE_WEB_RESOURCE_SERVICE_H_