| // Copyright 2013 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_API_MDNS_DNS_SD_DEVICE_LISTER_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_MDNS_DNS_SD_DEVICE_LISTER_H_ |
| |
| #include <map> |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/linked_ptr.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "chrome/browser/extensions/api/mdns/dns_sd_delegate.h" |
| #include "chrome/browser/local_discovery/service_discovery_host_client.h" |
| |
| namespace extensions { |
| |
| // Manages a watcher for a specific MDNS/DNS-SD service type and notifies |
| // a delegate of changes to watched services. |
| class DnsSdDeviceLister { |
| public: |
| DnsSdDeviceLister( |
| DnsSdDelegate* delegate, |
| const std::string& service_type, |
| scoped_refptr<local_discovery::ServiceDiscoveryHostClient> |
| service_discovery_client); |
| virtual ~DnsSdDeviceLister(); |
| |
| // Requests that the service watcher issue an immediate query for services. |
| // force_update will first clear the service cache. This must be called |
| // to instantiate the service watcher and start discovery. |
| virtual void Discover(bool force_update); |
| |
| protected: |
| // Invoked when the watcher notifies us of a service change. |
| void OnServiceUpdated( |
| local_discovery::ServiceWatcher::UpdateType update, |
| const std::string& service_name); |
| |
| void OnResolveComplete( |
| bool added, |
| local_discovery::ServiceResolver::RequestStatus status, |
| const local_discovery::ServiceDescription& description); |
| |
| private: |
| typedef std::map<std::string, linked_ptr<local_discovery::ServiceResolver> > |
| ServiceResolverMap; |
| |
| // The delegate to notify of changes to services. |
| DnsSdDelegate* const delegate_; |
| |
| // The service type for this watcher. |
| const std::string service_type_; |
| |
| // The instance of the service discovery client. |
| scoped_refptr<local_discovery::ServiceDiscoveryHostClient> |
| service_discovery_client_; |
| |
| // The instance of the service watcher. |
| scoped_ptr<local_discovery::ServiceWatcher> service_watcher_; |
| |
| ServiceResolverMap resolvers_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DnsSdDeviceLister); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_MDNS_DNS_SD_DEVICE_LISTER_H_ |