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// Copyright (c) 2011 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_HISTORY_HISTORY_TAB_HELPER_H_
#define CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
#pragma once
#include "content/browser/tab_contents/tab_contents_observer.h"
#include "content/common/notification_observer.h"
#include "content/common/notification_registrar.h"
class HistoryService;
class SkBitmap;
struct ThumbnailScore;
namespace history {
class HistoryAddPageArgs;
}
class HistoryTabHelper : public TabContentsObserver,
public NotificationObserver {
public:
explicit HistoryTabHelper(TabContents* tab_contents);
virtual ~HistoryTabHelper();
// Updates history with the specified navigation. This is called by
// OnMsgNavigate to update history state.
void UpdateHistoryForNavigation(
scoped_refptr<history::HistoryAddPageArgs> add_page_args);
// Sends the page title to the history service. This is called when we receive
// the page title and we know we want to update history.
void UpdateHistoryPageTitle(const NavigationEntry& entry);
// Returns the history::HistoryAddPageArgs to use for adding a page to
// history.
scoped_refptr<history::HistoryAddPageArgs> CreateHistoryAddPageArgs(
const GURL& virtual_url,
const content::LoadCommittedDetails& details,
const ViewHostMsg_FrameNavigate_Params& params);
private:
// TabContentsObserver implementation.
virtual bool OnMessageReceived(const IPC::Message& message);
virtual void DidNavigateMainFramePostCommit(
const content::LoadCommittedDetails& details,
const ViewHostMsg_FrameNavigate_Params& params);
virtual void DidNavigateAnyFramePostCommit(
const content::LoadCommittedDetails& details,
const ViewHostMsg_FrameNavigate_Params& params);
// NotificationObserver implementation.
virtual void Observe(int type,
const NotificationSource& source,
const NotificationDetails& details);
void OnPageContents(const GURL& url,
int32 page_id,
const string16& contents);
void OnThumbnail(const GURL& url,
const ThumbnailScore& score,
const SkBitmap& bitmap);
// Helper function to return the history service. May return NULL.
HistoryService* GetHistoryService();
// Whether we have a (non-empty) title for the current page.
// Used to prevent subsequent title updates from affecting history. This
// prevents some weirdness because some AJAXy apps use titles for status
// messages.
bool received_page_title_;
NotificationRegistrar registrar_;
DISALLOW_COPY_AND_ASSIGN(HistoryTabHelper);
};
#endif // CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
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