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/search/search_delegate.h" 6 7 #include "chrome/browser/ui/search/search_model.h" 8 #include "chrome/browser/ui/search/search_tab_helper.h" 9 10 SearchDelegate::SearchDelegate(SearchModel* browser_search_model) 11 : browser_model_(browser_search_model), 12 tab_model_() { 13 } 14 15 SearchDelegate::~SearchDelegate() { 16 DCHECK(!tab_model_) << "All tabs should have been deactivated or closed."; 17 } 18 19 void SearchDelegate::ModelChanged(const SearchModel::State& old_state, 20 const SearchModel::State& new_state) { 21 browser_model_->SetState(new_state); 22 } 23 24 void SearchDelegate::OnTabActivated(content::WebContents* web_contents) { 25 if (tab_model_) 26 tab_model_->RemoveObserver(this); 27 tab_model_ = SearchTabHelper::FromWebContents(web_contents)->model(); 28 browser_model_->SetState(tab_model_->state()); 29 tab_model_->AddObserver(this); 30 } 31 32 void SearchDelegate::OnTabDeactivated(content::WebContents* web_contents) { 33 StopObservingTab(web_contents); 34 } 35 36 void SearchDelegate::OnTabDetached(content::WebContents* web_contents) { 37 StopObservingTab(web_contents); 38 } 39 40 void SearchDelegate::StopObservingTab(content::WebContents* web_contents) { 41 SearchTabHelper* search_tab_helper = 42 SearchTabHelper::FromWebContents(web_contents); 43 if (search_tab_helper->model() == tab_model_) { 44 tab_model_->RemoveObserver(this); 45 tab_model_ = NULL; 46 } 47 } 48
