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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_VIEWS_FRAME_WEB_CONTENTS_CLOSE_HANDLER_H_
#define CHROME_BROWSER_UI_VIEWS_FRAME_WEB_CONTENTS_CLOSE_HANDLER_H_
#include "base/memory/raw_ptr.h"
#include "base/timer/timer.h"
class WebContentsCloseHandlerDelegate;
class WebContentsCloseHandlerTest;
// WebContentsCloseHandler handles notifying its delegate at the right time
// to clone and/or destroy the layer tree of the active tab. This is done so
// that on closing a window the user sees the contents of the last active
// tab rather than an empty rect.
class WebContentsCloseHandler {
public:
explicit WebContentsCloseHandler(WebContentsCloseHandlerDelegate* delegate);
WebContentsCloseHandler(const WebContentsCloseHandler&) = delete;
WebContentsCloseHandler& operator=(const WebContentsCloseHandler&) = delete;
~WebContentsCloseHandler();
// Invoked when a tab is inserted.
void TabInserted();
// Invoked when the active WebContents changes.
void ActiveTabChanged();
// Invoked when all the tabs are about to be closed.
void WillCloseAllTabs();
// Invoked when the close was canceled.
void CloseAllTabsCanceled();
private:
friend class WebContentsCloseHandlerTest;
// Invoked from the |timer_|. If hit it means enough time has expired after a
// close was canceled.
void OnStillHaventClosed();
raw_ptr<WebContentsCloseHandlerDelegate, AcrossTasksDanglingUntriaged>
delegate_;
// If true, WillCloseAllTabs() has been invoked.
bool in_close_;
// Set to true if the active tab changes while closing (ActiveTabChanged()
// was invoked following a WillCloseAllTabs()).
bool tab_changed_after_clone_;
base::OneShotTimer timer_;
};
#endif // CHROME_BROWSER_UI_VIEWS_FRAME_WEB_CONTENTS_CLOSE_HANDLER_H_
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