// 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 "ios/chrome/browser/webui/ui_bundled/prefs_internals_ui.h"
#include <string>
#include "base/json/json_writer.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/ref_counted_memory.h"
#include "base/values.h"
#include "components/local_state/local_state_utils.h"
#include "components/prefs/pref_service.h"
#include "ios/chrome/browser/shared/model/profile/profile_ios.h"
#include "ios/chrome/browser/shared/model/url/chrome_url_constants.h"
#include "ios/web/public/thread/web_thread.h"
#include "ios/web/public/webui/url_data_source_ios.h"
namespace {
// A simple data source that returns the preferences for the associated browser
// state.
class PrefsInternalsSource : public web::URLDataSourceIOS {
public:
explicit PrefsInternalsSource(ChromeBrowserState* browser_state)
: browser_state_(browser_state) {}
PrefsInternalsSource(const PrefsInternalsSource&) = delete;
PrefsInternalsSource& operator=(const PrefsInternalsSource&) = delete;
~PrefsInternalsSource() override = default;
// content::URLDataSource:
std::string GetSource() const override { return kChromeUIPrefsInternalsHost; }
std::string GetMimeType(const std::string& path) const override {
return "text/plain";
}
void StartDataRequest(
const std::string& path,
web::URLDataSourceIOS::GotDataCallback callback) override {
// TODO(crbug.com/40099982): Properly disable this webui provider for
// incognito browser states.
if (browser_state_->IsOffTheRecord()) {
std::move(callback).Run(nullptr);
return;
}
DCHECK_CURRENTLY_ON(web::WebThread::UI);
std::move(callback).Run(base::MakeRefCounted<base::RefCountedString>(
local_state_utils::GetPrefsAsJson(browser_state_->GetPrefs())
.value_or(std::string())));
}
private:
raw_ptr<ChromeBrowserState> browser_state_;
};
} // namespace
PrefsInternalsUI::PrefsInternalsUI(web::WebUIIOS* web_ui,
const std::string& host)
: web::WebUIIOSController(web_ui, host) {
ChromeBrowserState* browser_state = ChromeBrowserState::FromWebUIIOS(web_ui);
web::URLDataSourceIOS::Add(browser_state,
new PrefsInternalsSource(browser_state));
}
PrefsInternalsUI::~PrefsInternalsUI() = default;