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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/webui/managed_ui_handler.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/values.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/policy/profile_policy_connector.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/managed_ui.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/webui_url_constants.h"
#include "components/supervised_user/core/common/pref_names.h"
#include "content/public/browser/web_ui.h"
#include "content/public/browser/web_ui_data_source.h"
namespace {
policy::PolicyService* GetProfilePolicyService(Profile* profile) {
auto* profile_connector = profile->GetProfilePolicyConnector();
return profile_connector->policy_service();
}
} // namespace
// static
void ManagedUIHandler::Initialize(content::WebUI* web_ui,
content::WebUIDataSource* source) {
InitializeInternal(web_ui, source, Profile::FromWebUI(web_ui));
}
// static
void ManagedUIHandler::InitializeInternal(content::WebUI* web_ui,
content::WebUIDataSource* source,
Profile* profile) {
auto handler = std::make_unique<ManagedUIHandler>(profile);
source->AddLocalizedStrings(handler->GetDataSourceUpdate());
handler->source_name_ = source->GetSource();
web_ui->AddMessageHandler(std::move(handler));
}
ManagedUIHandler::ManagedUIHandler(Profile* profile)
: profile_(profile), managed_(ShouldDisplayManagedUi(profile_)) {
pref_registrar_.Init(profile_->GetPrefs());
}
ManagedUIHandler::~ManagedUIHandler() {
RemoveObservers();
}
void ManagedUIHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"observeManagedUI",
base::BindRepeating(&ManagedUIHandler::HandleObserveManagedUI,
base::Unretained(this)));
}
void ManagedUIHandler::HandleObserveManagedUI(
const base::Value::List& /*args*/) {
AllowJavascript();
AddObservers();
}
void ManagedUIHandler::OnJavascriptDisallowed() {
RemoveObservers();
}
void ManagedUIHandler::OnPolicyUpdated(const policy::PolicyNamespace& ns,
const policy::PolicyMap& previous,
const policy::PolicyMap& current) {
NotifyIfChanged();
}
// Manually add/remove observers. ScopedObserver doesn't work with
// PolicyService::Observer because AddObserver() takes 2 arguments.
void ManagedUIHandler::AddObservers() {
if (has_observers_) {
return;
}
has_observers_ = true;
auto* policy_service = GetProfilePolicyService(profile_);
for (int i = 0; i < policy::POLICY_DOMAIN_SIZE; i++) {
auto domain = static_cast<policy::PolicyDomain>(i);
policy_service->AddObserver(domain, this);
}
pref_registrar_.Add(prefs::kSupervisedUserId,
base::BindRepeating(&ManagedUIHandler::NotifyIfChanged,
base::Unretained(this)));
}
void ManagedUIHandler::RemoveObservers() {
if (!has_observers_) {
return;
}
has_observers_ = false;
auto* policy_service = GetProfilePolicyService(profile_);
for (int i = 0; i < policy::POLICY_DOMAIN_SIZE; i++) {
auto domain = static_cast<policy::PolicyDomain>(i);
policy_service->RemoveObserver(domain, this);
}
pref_registrar_.RemoveAll();
}
base::Value::Dict ManagedUIHandler::GetDataSourceUpdate() const {
base::Value::Dict update;
#if BUILDFLAG(IS_CHROMEOS)
update.Set("deviceManagedByOrg", GetDeviceManagedUiWebUILabel());
#endif
update.Set("managedByIcon", GetManagedUiWebUIIcon(profile_));
update.Set("managementPageUrl", GetManagedUiUrl(profile_).spec());
update.Set("browserManagedByOrg", GetManagedUiWebUILabel(profile_));
update.Set("isManaged", managed_);
return update;
}
void ManagedUIHandler::NotifyIfChanged() {
bool managed = ShouldDisplayManagedUi(profile_);
if (managed == managed_) {
return;
}
managed_ = managed;
FireWebUIListener("is-managed-changed", base::Value(managed));
content::WebUIDataSource::Update(profile_, source_name_,
GetDataSourceUpdate());
}
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