chrome/browser/ui/views/frame/web_contents_close_handler.cc

   1 // Copyright 2014 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/views/frame/web_contents_close_handler.h"
   6
   7 #include "chrome/browser/ui/views/frame/web_contents_close_handler_delegate.h"
   8
   9 WebContentsCloseHandler::WebContentsCloseHandler(
  10     WebContentsCloseHandlerDelegate* delegate)
  11     : delegate_(delegate),
  12       in_close_(false),
  13       tab_changed_after_clone_(false) {
  14 }
  15
  16 WebContentsCloseHandler::~WebContentsCloseHandler() {
  17 }
  18
  19 void WebContentsCloseHandler::TabInserted() {
  20   // Tests may end up reviving a TabStrip that is empty.
  21   if (!in_close_)
  22     return;
  23   in_close_ = false;
  24   delegate_->DestroyClonedLayer();
  25 }
  26
  27 void WebContentsCloseHandler::ActiveTabChanged() {
  28   if (in_close_)
  29     tab_changed_after_clone_ = true;
  30   else
  31     delegate_->DestroyClonedLayer();
  32 }
  33
  34 void WebContentsCloseHandler::WillCloseAllTabs() {
  35   DCHECK(!in_close_);
  36   in_close_ = true;
  37   tab_changed_after_clone_ = false;
  38   delegate_->CloneWebContentsLayer();
  39   timer_.Stop();
  40 }
  41
  42 void WebContentsCloseHandler::CloseAllTabsCanceled() {
  43   DCHECK(in_close_);
  44   in_close_ = false;
  45   if (tab_changed_after_clone_) {
  46     // If the tab changed, destroy immediately. That way we make sure we aren't
  47     // showing the wrong thing.
  48     delegate_->DestroyClonedLayer();
  49   } else {
  50     // The most common reason for a close to be canceled is a before unload
  51     // handler. Often times the tab still ends up closing, but only after we get
  52     // back a response from the renderer. Assume this is going to happen and
  53     // keep around the cloned layer for a bit more time.
  54     timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(500),
  55                  this, &WebContentsCloseHandler::OnStillHaventClosed);
  56   }
  57 }
  58
  59 void WebContentsCloseHandler::OnStillHaventClosed() {
  60   delegate_->DestroyClonedLayer();
  61 }