chrome/browser/ui/sad_tab_helper.cc

   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 #include "chrome/browser/ui/sad_tab_helper.h"
   6
   7 #include "base/logging.h"
   8 #include "chrome/browser/browser_shutdown.h"
   9 #include "chrome/browser/ui/sad_tab.h"
  10 #include "content/public/browser/web_contents.h"
  11
  12 DEFINE_WEB_CONTENTS_USER_DATA_KEY(SadTabHelper);
  13
  14 SadTabHelper::~SadTabHelper() {
  15 }
  16
  17 SadTabHelper::SadTabHelper(content::WebContents* web_contents)
  18     : content::WebContentsObserver(web_contents) {
  19 }
  20
  21 void SadTabHelper::RenderViewReady() {
  22   if (sad_tab_) {
  23     sad_tab_->Close();
  24     sad_tab_.reset();
  25   }
  26 }
  27
  28 void SadTabHelper::RenderProcessGone(base::TerminationStatus status) {
  29   // Only show the sad tab if we're not in browser shutdown, so that WebContents
  30   // objects that are not in a browser (e.g., HTML dialogs) and thus are
  31   // visible do not flash a sad tab page.
  32   if (browser_shutdown::GetShutdownType() != browser_shutdown::NOT_VALID)
  33     return;
  34
  35   if (sad_tab_)
  36     return;
  37
  38   if (chrome::SadTab::ShouldShow(status))
  39     InstallSadTab(status);
  40 }
  41
  42 void SadTabHelper::InstallSadTab(base::TerminationStatus status) {
  43   chrome::SadTabKind kind =
  44       (status == base::TERMINATION_STATUS_PROCESS_WAS_KILLED) ?
  45           chrome::SAD_TAB_KIND_KILLED : chrome::SAD_TAB_KIND_CRASHED;
  46   sad_tab_.reset(chrome::SadTab::Create(web_contents(), kind));
  47   sad_tab_->Show();
  48 }