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// Copyright 2016 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/webui/settings/on_startup_handler.h"
#include <string>
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/logging.h"
#include "chrome/browser/extensions/settings_api_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/webui/settings_utils.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_ui.h"
#include "extensions/browser/extension_system.h"
#include "extensions/browser/management_policy.h"
#include "extensions/common/extension.h"
namespace settings {
// static
const char OnStartupHandler::kOnStartupNtpExtensionEventName[] =
"update-ntp-extension";
OnStartupHandler::OnStartupHandler(Profile* profile)
: extension_registry_observer_(this), profile_(profile) {
DCHECK(profile);
}
OnStartupHandler::~OnStartupHandler() {}
void OnStartupHandler::OnJavascriptAllowed() {
extension_registry_observer_.Add(
extensions::ExtensionRegistry::Get(profile_));
}
void OnStartupHandler::OnJavascriptDisallowed() {
extension_registry_observer_.RemoveAll();
}
void OnStartupHandler::RegisterMessages() {
web_ui()->RegisterMessageCallback(
"getNtpExtension",
base::BindRepeating(&OnStartupHandler::HandleGetNtpExtension,
base::Unretained(this)));
web_ui()->RegisterMessageCallback(
"validateStartupPage",
base::BindRepeating(&OnStartupHandler::HandleValidateStartupPage,
base::Unretained(this)));
}
void OnStartupHandler::OnExtensionUnloaded(
content::BrowserContext* browser_context,
const extensions::Extension* extension,
extensions::UnloadedExtensionReason reason) {
FireWebUIListener(kOnStartupNtpExtensionEventName, *GetNtpExtension());
}
void OnStartupHandler::OnExtensionReady(
content::BrowserContext* browser_context,
const extensions::Extension* extension) {
FireWebUIListener(kOnStartupNtpExtensionEventName, *GetNtpExtension());
}
std::unique_ptr<base::Value> OnStartupHandler::GetNtpExtension() {
const extensions::Extension* ntp_extension =
extensions::GetExtensionOverridingNewTabPage(profile_);
if (!ntp_extension) {
std::unique_ptr<base::Value> none(new base::Value);
return none;
}
std::unique_ptr<base::DictionaryValue> dict(new base::DictionaryValue);
dict->SetString("id", ntp_extension->id());
dict->SetString("name", ntp_extension->name());
dict->SetBoolean("canBeDisabled",
!extensions::ExtensionSystem::Get(profile_)
->management_policy()
->MustRemainEnabled(ntp_extension, nullptr));
return dict;
}
void OnStartupHandler::HandleGetNtpExtension(const base::ListValue* args) {
const base::Value* callback_id;
CHECK(args->Get(0, &callback_id));
AllowJavascript();
ResolveJavascriptCallback(*callback_id, *GetNtpExtension());
}
void OnStartupHandler::HandleValidateStartupPage(const base::ListValue* args) {
CHECK_EQ(args->GetSize(), 2U);
const base::Value* callback_id;
CHECK(args->Get(0, &callback_id));
std::string url_string;
CHECK(args->GetString(1, &url_string));
AllowJavascript();
bool valid = settings_utils::FixupAndValidateStartupPage(url_string, nullptr);
ResolveJavascriptCallback(*callback_id, base::Value(valid));
}
} // namespace settings
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