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// 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.
#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);
// ProfileSyncServiceObserver
virtual void OnStateChanged();
private:
enum MessageType {
HIDE,
SYNC_ERROR,
};
// Helper to invoke the |syncMessageChanged| JS function on the new tab page.
void SendSyncMessageToPage(MessageType type,
std::string msg, 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();
// Helper to send a message to the NNTP which hides the sync section.
void HideSyncStatusSection();
// Helper to convert from a sync status message type to an NTP specific one.
static MessageType FromSyncStatusMessageType(
SyncStatusUIHelper::MessageType type);
// 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_
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