chrome/browser/ui/sad_tab_helper.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
   6 #define CHROME_BROWSER_UI_SAD_TAB_HELPER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "content/public/browser/web_contents_observer.h"
  12 #include "content/public/browser/web_contents_user_data.h"
  13
  14 namespace chrome {
  15 class SadTab;
  16 }
  17
  18 // Per-tab class to manage sad tab views.
  19 class SadTabHelper : public content::WebContentsObserver,
  20                      public content::WebContentsUserData<SadTabHelper> {
  21  public:
  22   ~SadTabHelper() override;
  23
  24   chrome::SadTab* sad_tab() { return sad_tab_.get(); }
  25
  26  private:
  27   friend class content::WebContentsUserData<SadTabHelper>;
  28
  29   explicit SadTabHelper(content::WebContents* web_contents);
  30
  31   void InstallSadTab(base::TerminationStatus status);
  32
  33   // Overridden from content::WebContentsObserver:
  34   void RenderViewReady() override;
  35   void RenderProcessGone(base::TerminationStatus status) override;
  36
  37   scoped_ptr<chrome::SadTab> sad_tab_;
  38
  39   DISALLOW_COPY_AND_ASSIGN(SadTabHelper);
  40 };
  41
  42 #endif  // CHROME_BROWSER_UI_SAD_TAB_HELPER_H_