Multi-tab: Adding new Notification when tab selection changes.

chrome/browser/ui/views/tabs/browser_tab_strip_controller.cc

 // Copyright (c) 2011 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/ui/views/tabs/browser_tab_strip_controller.h"
 
 #include "base/auto_reset.h"
 #include "base/command_line.h"
 #include "chrome/browser/extensions/extension_tab_helper.h"
 #include "chrome/browser/favicon/favicon_tab_helper.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tabs/tab_strip_model.h"
+#include "chrome/browser/tabs/tab_strip_selection_model.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/browser/ui/tabs/tab_menu_model.h"
 #include "chrome/browser/ui/views/tabs/base_tab_strip.h"
 #include "chrome/browser/ui/views/tabs/tab_renderer_data.h"
 #include "chrome/common/url_constants.h"
 #include "content/browser/renderer_host/render_view_host.h"
 #include "content/browser/tab_contents/tab_contents.h"
 #include "content/browser/user_metrics.h"
 #include "content/common/notification_service.h"
@@ skipping 310 matching lines @@
 }
 
 void BrowserTabStripController::TabDetachedAt(TabContentsWrapper* contents,
                                               int model_index) {
   // Cancel any pending tab transition.
   hover_tab_selector_.CancelTabTransition();
 
   tabstrip_->RemoveTabAt(model_index);
 }
 
-void BrowserTabStripController::ActiveTabChanged(
-    TabContentsWrapper* old_contents,
-    TabContentsWrapper* contents,
-    int model_index,
-    bool user_gesture) {
-  tabstrip_->SelectTabAt(model_->GetIndexOfTabContents(old_contents),
-                         model_index);
+void BrowserTabStripController::TabSelectionChanged(
+    const TabStripSelectionModel& old_model) {
+  tabstrip_->SetSelection(old_model, model_->selection_model());
 }
 
 void BrowserTabStripController::TabMoved(TabContentsWrapper* contents,
                                          int from_model_index,
                                          int to_model_index) {
   // Cancel any pending tab transition.
   hover_tab_selector_.CancelTabTransition();
 
   // Update the data first as the pinned state may have changed.
   TabRendererData data;
@@ skipping 112 matching lines @@
   DCHECK(type.value == NotificationType::TAB_CLOSEABLE_STATE_CHANGED);
   // Note that this notification may be fired during a model mutation and
   // possibly before the tabstrip has processed the change.
   // Here, we just re-layout each existing tab to reflect the change in its
   // closeable state, and then schedule paint for entire tabstrip.
   for (int i = 0; i < tabstrip_->tab_count(); ++i) {
     tabstrip_->base_tab_at_tab_index(i)->Layout();
   }
   tabstrip_->SchedulePaint();
 }