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// Copyright (c) 2012 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_
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"
namespace history {
struct HistoryAddPageArgs;
class HistoryService;
}
class HistoryTabHelper : public content::WebContentsObserver,
public content::WebContentsUserData<HistoryTabHelper> {
public:
~HistoryTabHelper() override;
// Updates history with the specified navigation. This is called by
// OnMsgNavigate to update history state.
void UpdateHistoryForNavigation(
const 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 content::NavigationEntry& entry);
// Returns the history::HistoryAddPageArgs to use for adding a page to
// history.
history::HistoryAddPageArgs CreateHistoryAddPageArgs(
const GURL& virtual_url,
base::Time timestamp,
bool did_replace_entry,
int nav_entry_id,
const content::FrameNavigateParams& params);
private:
explicit HistoryTabHelper(content::WebContents* web_contents);
friend class content::WebContentsUserData<HistoryTabHelper>;
// content::WebContentsObserver implementation.
void DidNavigateMainFrame(
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) override;
void DidNavigateAnyFrame(content::RenderFrameHost* render_frame_host,
const content::LoadCommittedDetails& details,
const content::FrameNavigateParams& params) override;
void TitleWasSet(content::NavigationEntry* entry, bool explicit_set) override;
void WebContentsDestroyed() override;
// Helper function to return the history service. May return NULL.
history::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_;
DISALLOW_COPY_AND_ASSIGN(HistoryTabHelper);
};
#endif // CHROME_BROWSER_HISTORY_HISTORY_TAB_HELPER_H_
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