mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-28 00:06:09 +03:00
69 lines
2.7 KiB
C++
69 lines
2.7 KiB
C++
// Copyright (c) 2011 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 NET_PROXY_PROXY_CONFIG_SERVICE_H_
|
|
#define NET_PROXY_PROXY_CONFIG_SERVICE_H_
|
|
|
|
#include "net/base/net_export.h"
|
|
|
|
namespace net {
|
|
|
|
class ProxyConfig;
|
|
|
|
// Service for watching when the proxy settings have changed.
|
|
class NET_EXPORT ProxyConfigService {
|
|
public:
|
|
// Indicates whether proxy configuration is valid, and if not, why.
|
|
enum ConfigAvailability {
|
|
// Configuration is pending, observers will be notified later.
|
|
CONFIG_PENDING,
|
|
// Configuration is present and valid.
|
|
CONFIG_VALID,
|
|
// No configuration is set.
|
|
CONFIG_UNSET
|
|
};
|
|
|
|
// Observer for being notified when the proxy settings have changed.
|
|
class NET_EXPORT Observer {
|
|
public:
|
|
virtual ~Observer() {}
|
|
// Notification callback that should be invoked by ProxyConfigService
|
|
// implementors whenever the configuration changes. |availability| indicates
|
|
// the new availability status and can be CONFIG_UNSET or CONFIG_VALID (in
|
|
// which case |config| contains the configuration). Implementors must not
|
|
// pass CONFIG_PENDING.
|
|
virtual void OnProxyConfigChanged(const ProxyConfig& config,
|
|
ConfigAvailability availability) = 0;
|
|
};
|
|
|
|
virtual ~ProxyConfigService() {}
|
|
|
|
// Adds/Removes an observer that will be called whenever the proxy
|
|
// configuration has changed.
|
|
virtual void AddObserver(Observer* observer) = 0;
|
|
virtual void RemoveObserver(Observer* observer) = 0;
|
|
|
|
// Gets the most recent availability status. If a configuration is present,
|
|
// the proxy configuration is written to |config| and CONFIG_VALID is
|
|
// returned. Returns CONFIG_PENDING if it is not available yet. In this case,
|
|
// it is guaranteed that subscribed observers will be notified of a change at
|
|
// some point in the future once the configuration is available.
|
|
// Note that to avoid re-entrancy problems, implementations should not
|
|
// dispatch any change notifications from within this function.
|
|
virtual ConfigAvailability GetLatestProxyConfig(ProxyConfig* config) = 0;
|
|
|
|
// ProxyService will call this periodically during periods of activity.
|
|
// It can be used as a signal for polling-based implementations.
|
|
//
|
|
// Note that this is purely used as an optimization -- polling
|
|
// implementations could simply set a global timer that goes off every
|
|
// X seconds at which point they check for changes. However that has
|
|
// the disadvantage of doing continuous work even during idle periods.
|
|
virtual void OnLazyPoll() {}
|
|
};
|
|
|
|
} // namespace net
|
|
|
|
#endif // NET_PROXY_PROXY_CONFIG_SERVICE_H_
|