Componentize GoogleURLTracker(InfoBarDelegate,MapEntry,NavHelper)

chrome/browser/google/google_url_tracker_map_entry.cc

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/google/google_url_tracker_map_entry.h"
-
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/google/google_url_tracker.h"
-#include "components/infobars/core/infobar.h"
-
-GoogleURLTrackerMapEntry::GoogleURLTrackerMapEntry(
-    GoogleURLTracker* google_url_tracker,
-    infobars::InfoBarManager* infobar_manager,
-    scoped_ptr<GoogleURLTrackerNavigationHelper> navigation_helper)
-    : google_url_tracker_(google_url_tracker),
-      infobar_manager_(infobar_manager),
-      infobar_delegate_(NULL),
-      navigation_helper_(navigation_helper.Pass()),
-      observing_(false) {
-  DCHECK(infobar_manager_);
-}
-
-GoogleURLTrackerMapEntry::~GoogleURLTrackerMapEntry() {
-  if (observing_)
-    infobar_manager_->RemoveObserver(this);
-}
-
-void GoogleURLTrackerMapEntry::SetInfoBarDelegate(
-    GoogleURLTrackerInfoBarDelegate* infobar_delegate) {
-  DCHECK(!infobar_delegate_);
-
-  // Transfer ownership of |navigation_helper_| to the infobar delegate as the
-  // infobar delegate has need of it after this object has been destroyed in
-  // the case where the user accepts the new Google URL.
-  infobar_delegate->set_navigation_helper(navigation_helper_.Pass());
-  infobar_delegate_ = infobar_delegate;
-  infobar_manager_->AddObserver(this);
-  observing_ = true;
-}
-
-void GoogleURLTrackerMapEntry::Close(bool redo_search) {
-  if (infobar_delegate_) {
-    infobar_delegate_->Close(redo_search);
-  } else {
-    // WARNING: |infobar_manager_| may point to a deleted object.  Do not
-    // dereference it!  See GoogleURLTracker::OnTabClosed().
-    google_url_tracker_->DeleteMapEntryForManager(infobar_manager_);
-  }
-  // WARNING: At this point |this| has been deleted!
-}
-
-void GoogleURLTrackerMapEntry::OnInfoBarRemoved(infobars::InfoBar* infobar,
-                                                bool animate) {
-  DCHECK(infobar_delegate_);
-  if (infobar->delegate() == infobar_delegate_) {
-    google_url_tracker_->DeleteMapEntryForManager(infobar_manager_);
-    // WARNING: At this point |this| has been deleted!
-  }
-}
-
-void GoogleURLTrackerMapEntry::OnManagerShuttingDown(
-    infobars::InfoBarManager* manager) {
-  DCHECK(observing_);
-  DCHECK_EQ(infobar_manager_, manager);
-  manager->RemoveObserver(this);
-  observing_ = false;
-}