1 files changed, 61 insertions, 0 deletions
diff --git a/chrome/browser/dom_ui/new_tab_page_sync_handler.h b/chrome/browser/dom_ui/new_tab_page_sync_handler.h
new file mode 100644
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+++ b/chrome/browser/dom_ui/new_tab_page_sync_handler.h
@@ -0,0 +1,61 @@
+// Copyright (c) 2006-2008 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.
+
+#ifdef CHROME_PERSONALIZATION
+
+#ifndef CHROME_BROWSER_DOM_UI_NEW_TAB_PAGE_SYNC_HANDLER_H_
+#define CHROME_BROWSER_DOM_UI_NEW_TAB_PAGE_SYNC_HANDLER_H_
+
+#include <string>
+
+#include "chrome/browser/dom_ui/dom_ui.h"
+#include "chrome/browser/sync/profile_sync_service.h"
+#include "chrome/browser/sync/sync_status_ui_helper.h"
+
+class Value;
+
+// Sends sync-state changes to the New Tab Page for UI updating and forwards
+// link clicks on the page to the sync service.
+class NewTabPageSyncHandler : public DOMMessageHandler,
+                              public ProfileSyncServiceObserver {
+ public:
+  NewTabPageSyncHandler();
+  virtual ~NewTabPageSyncHandler();
+
+  // DOMMessageHandler implementation.
+  virtual DOMMessageHandler* Attach(DOMUI* dom_ui);
+  virtual void RegisterMessages();
+
+  // Callback for "GetSyncMessage".
+  void HandleGetSyncMessage(const Value* value);
+  // Callback for "SyncLinkClicked".
+  void HandleSyncLinkClicked(const Value* value);
+  // Callback for "ResizeP13N"
+  void HandleResizeP13N(const Value* value);
+
+  // ProfileSyncServiceObserver
+  virtual void OnStateChanged();
+
+ private:
+  // Helper to invoke |renderSyncMessage| JS function on the new tab page.
+  void SendSyncMessageToPage(SyncStatusUIHelper::MessageType type,
+                             std::string msg, const std::string& linktext);
+
+  // Helper to query the sync service and figure out what to send to
+  // the page, and send it via SendSyncMessageToPage.
+  // NOTE: precondition: sync must be enabled.
+  void BuildAndSendSyncStatus();
+
+  // Cached pointer to ProfileSyncService.
+  ProfileSyncService* sync_service_;
+
+  // Used to make sure we don't register ourselves twice if the user refreshes
+  // the new tab page.
+  bool waiting_for_initial_page_load_;
+
+  DISALLOW_COPY_AND_ASSIGN(NewTabPageSyncHandler);
+};
+
+#endif  // CHROME_BROWSER_DOM_UI_NEW_TAB_PAGE_SYNC_HANDLER_H_
+#endif  // CHROME_PERSONALIZATION