blob: a127bb284abd6255bb01f3792dc4bf756aefa89a [file] [log] [blame]
// Copyright 2018 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/resource_coordinator/local_site_characteristics_feature_usage.h"
#include "base/callback_forward.h"
namespace resource_coordinator {
// Pure virtual interface to read the characteristics of an origin. This is a
// usable abstraction for both the local and global database.
class SiteCharacteristicsDataReader {
SiteCharacteristicsDataReader() = default;
virtual ~SiteCharacteristicsDataReader() {}
// Accessors for the site characteristics usage.
virtual SiteFeatureUsage UpdatesFaviconInBackground() const = 0;
virtual SiteFeatureUsage UpdatesTitleInBackground() const = 0;
virtual SiteFeatureUsage UsesAudioInBackground() const = 0;
virtual SiteFeatureUsage UsesNotificationsInBackground() const = 0;
// Returns true if this reader is fully initialized and serving the most
// authoritative data. This can initially return false as the backing store is
// loaded asynchronously.
virtual bool DataLoaded() const = 0;
// Registers a callback that will be invoked when the data backing this object
// has been loaded. Note that if "DataLoaded" is true at the time this is
// called it may immediately invoke the callback.
virtual void RegisterDataLoadedCallback(base::OnceClosure&& callback) = 0;
} // namespace resource_coordinator