sad_tab_helper.h | Explore in Territory

// Copyright 2012 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_SAD_TAB_HELPER_H_
#define CHROME_BROWSER_UI_SAD_TAB_HELPER_H_

#include <memory>

#include "content/public/browser/web_contents_observer.h"
#include "content/public/browser/web_contents_user_data.h"

class SadTab;

// Per-tab class to manage sad tab views. The sad tab view appears when the main
// frame of a WebContents has crashed. The behaviour depends on whether
// content::ShouldSkipEarlyCommitPendingForCrashedFrame is true or not.
//
// TODO(crbug.com/40052076): The early commit path is being removed, tidy
// these docs when that happens.
//
// If we are doing the early commit then the sad tab is removed when
// WebContentsObserver::RenderViewReady is signalled and does not come back
// unless the new frame also crashes.
//
// If we are not doing the early commit then the sad tab is removed when the new
// frame is created but the new frame is left invisible, this leaves the empty
// WebContents displaying. If the new frame commits, it becomes visible. If the
// commit is aborted, we reinstate the sad tab.
//
class SadTabHelper : public content::WebContentsObserver,
                     public content::WebContentsUserData<SadTabHelper> { … };

#endif  // CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
chromium/chrome/browser/ui/sad_tab_helper.h
