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// Copyright (c) 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.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_WARNING_SERVICE_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_WARNING_SERVICE_H_
#include <set>
#include <string>
#include <vector>
#include "base/observer_list.h"
#include "base/threading/non_thread_safe.h"
#include "chrome/browser/extensions/extension_warning_set.h"
#include "chrome/common/extensions/extension_set.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
// TODO(battre) Remove the Extension prefix.
class Profile;
namespace content {
class NotificationDetails;
class NotificationSource;
}
namespace extensions {
// Manages a set of warnings caused by extensions. These warnings (e.g.
// conflicting modifications of network requests by extensions, slow extensions,
// etc.) trigger a warning badge in the UI and and provide means to resolve
// them. This class must be used on the UI thread only.
class ExtensionWarningService : public content::NotificationObserver,
public base::NonThreadSafe {
public:
class Observer {
public:
virtual void ExtensionWarningsChanged() = 0;
};
// |profile| may be NULL for testing. In this case, be sure to not insert
// any warnings.
explicit ExtensionWarningService(Profile* profile);
virtual ~ExtensionWarningService();
// Clears all warnings of types contained in |types| and notifies observers
// of the changed warnings.
void ClearWarnings(const std::set<ExtensionWarning::WarningType>& types);
// Returns all types of warnings effecting extension |extension_id|.
std::set<ExtensionWarning::WarningType> GetWarningTypesAffectingExtension(
const std::string& extension_id) const;
// Returns all localized warnings for extension |extension_id| in |result|.
std::vector<std::string> GetWarningMessagesForExtension(
const std::string& extension_id) const;
const ExtensionWarningSet& warnings() const { return warnings_; }
// Adds a set of warnings and notifies observers if any warning is new.
void AddWarnings(const ExtensionWarningSet& warnings);
// Notifies the ExtensionWarningService of profile |profile_id| that new
// |warnings| occurred and triggers a warning badge.
static void NotifyWarningsOnUI(void* profile_id,
const ExtensionWarningSet& warnings);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
void NotifyWarningsChanged();
// Implementation for content::NotificationObserver.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Currently existing warnings.
ExtensionWarningSet warnings_;
content::NotificationRegistrar registrar_;
Profile* profile_;
ObserverList<Observer> observer_list_;
};
} // namespace extensions
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_WARNING_SERVICE_H_
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