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// 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/ui/browser_instant_controller.h"
#include "base/bind.h"
#include "chrome/browser/infobars/infobar_service.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search/instant_service.h"
#include "chrome/browser/search/instant_service_factory.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_window.h"
#include "chrome/browser/ui/location_bar/location_bar.h"
#include "chrome/browser/ui/search/instant_search_prerenderer.h"
#include "chrome/browser/ui/search/search_model.h"
#include "chrome/browser/ui/search/search_tab_helper.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/search/instant_types.h"
#include "chrome/common/url_constants.h"
#include "components/omnibox/browser/omnibox_popup_model.h"
#include "components/omnibox/browser/omnibox_view.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_controller.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/user_metrics.h"
#include "content/public/browser/web_contents.h"
#include "content/public/browser/web_contents_user_data.h"
#include "content/public/common/referrer.h"
#include "ui/base/page_transition_types.h"
// Helpers --------------------------------------------------------------------
namespace {
// Helper class for posting a task to reload a tab, to avoid doing a re-entrant
// navigation, since it can be called when starting a navigation. This class
// makes sure to only execute the reload if the WebContents still exists.
class TabReloader : public content::WebContentsUserData<TabReloader> {
public:
static void Reload(content::WebContents* web_contents) {
TabReloader::CreateForWebContents(web_contents);
}
private:
friend class content::WebContentsUserData<TabReloader>;
explicit TabReloader(content::WebContents* web_contents)
: web_contents_(web_contents), weak_ptr_factory_(this) {
content::BrowserThread::PostTask(
content::BrowserThread::UI,
FROM_HERE,
base::Bind(&TabReloader::ReloadImpl, weak_ptr_factory_.GetWeakPtr()));
}
~TabReloader() override {}
void ReloadImpl() {
web_contents_->GetController().Reload(content::ReloadType::NORMAL, false);
// As the reload was not triggered by the user we don't want to close any
// infobars. We have to tell the InfoBarService after the reload,
// otherwise it would ignore this call when
// WebContentsObserver::DidStartNavigationToPendingEntry is invoked.
InfoBarService::FromWebContents(web_contents_)->set_ignore_next_reload();
web_contents_->RemoveUserData(UserDataKey());
}
content::WebContents* web_contents_;
base::WeakPtrFactory<TabReloader> weak_ptr_factory_;
};
} // namespace
DEFINE_WEB_CONTENTS_USER_DATA_KEY(TabReloader);
// BrowserInstantController ---------------------------------------------------
BrowserInstantController::BrowserInstantController(Browser* browser)
: browser_(browser),
instant_(this) {
browser_->search_model()->AddObserver(this);
InstantService* instant_service =
InstantServiceFactory::GetForProfile(profile());
instant_service->AddObserver(this);
}
BrowserInstantController::~BrowserInstantController() {
browser_->search_model()->RemoveObserver(this);
InstantService* instant_service =
InstantServiceFactory::GetForProfile(profile());
instant_service->RemoveObserver(this);
}
void BrowserInstantController::OpenInstant(WindowOpenDisposition disposition,
const GURL& url) {
// Unsupported dispositions.
if (disposition == WindowOpenDisposition::NEW_BACKGROUND_TAB ||
disposition == WindowOpenDisposition::NEW_WINDOW ||
disposition == WindowOpenDisposition::NEW_FOREGROUND_TAB) {
return;
}
// The omnibox currently doesn't use other dispositions, so we don't attempt
// to handle them. If you hit this DCHECK file a bug and I'll (sky) add
// support for the new disposition.
DCHECK(disposition == WindowOpenDisposition::CURRENT_TAB)
<< static_cast<int>(disposition);
const base::string16& search_terms =
search::ExtractSearchTermsFromURL(profile(), url);
if (search_terms.empty())
return;
InstantSearchPrerenderer* prerenderer =
InstantSearchPrerenderer::GetForProfile(profile());
if (!prerenderer)
return;
if (prerenderer->CanCommitQuery(GetActiveWebContents(), search_terms)) {
// Submit query to render the prefetched results. Browser will swap the
// prerendered contents with the active tab contents.
prerenderer->Commit(search_terms, EmbeddedSearchRequestParams(url));
} else {
prerenderer->Cancel();
}
}
Profile* BrowserInstantController::profile() const {
return browser_->profile();
}
content::WebContents* BrowserInstantController::GetActiveWebContents() const {
return browser_->tab_strip_model()->GetActiveWebContents();
}
void BrowserInstantController::ActiveTabChanged() {
instant_.ActiveTabChanged();
}
void BrowserInstantController::TabDeactivated(content::WebContents* contents) {
InstantSearchPrerenderer* prerenderer =
InstantSearchPrerenderer::GetForProfile(profile());
if (prerenderer)
prerenderer->Cancel();
}
void BrowserInstantController::ModelChanged(
const SearchModel::State& old_state,
const SearchModel::State& new_state) {
if (old_state.mode != new_state.mode) {
const SearchMode& new_mode = new_state.mode;
// Record some actions corresponding to the mode change. Note that to get
// the full story, it's necessary to look at other UMA actions as well,
// such as tab switches.
if (new_mode.is_ntp())
content::RecordAction(base::UserMetricsAction("InstantExtended.ShowNTP"));
instant_.SearchModeChanged(old_state.mode, new_mode);
}
if (old_state.instant_support != new_state.instant_support)
instant_.InstantSupportChanged(new_state.instant_support);
}
void BrowserInstantController::DefaultSearchProviderChanged(
bool google_base_url_domain_changed) {
InstantService* instant_service =
InstantServiceFactory::GetForProfile(profile());
if (!instant_service)
return;
TabStripModel* tab_model = browser_->tab_strip_model();
int count = tab_model->count();
for (int index = 0; index < count; ++index) {
content::WebContents* contents = tab_model->GetWebContentsAt(index);
if (!contents)
continue;
// Send new search URLs to the renderer.
content::RenderProcessHost* rph = contents->GetRenderProcessHost();
instant_service->SendSearchURLsToRenderer(rph);
if (!instant_service->IsInstantProcess(rph->GetID()))
continue;
SearchModel* model = SearchTabHelper::FromWebContents(contents)->model();
if (google_base_url_domain_changed && model->mode().is_origin_ntp()) {
GURL local_ntp_url(chrome::kChromeSearchLocalNtpUrl);
// Replace the server NTP with the local NTP.
content::NavigationController::LoadURLParams params(local_ntp_url);
params.should_replace_current_entry = true;
params.referrer = content::Referrer();
params.transition_type = ui::PAGE_TRANSITION_RELOAD;
contents->GetController().LoadURLWithParams(params);
} else {
// Reload the contents to ensure that it gets assigned to a
// non-privileged renderer.
TabReloader::Reload(contents);
}
}
}
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