Initial commit of sync engine code to browser/sync....

chrome/browser/sync/notifier/base/network_status_detector_task.h

+// Copyright (c) 2009 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_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_
+#define CHROME_BROWSER_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_
+
+#include "chrome/browser/sync/notifier/base/time.h"
+#include "talk/base/sigslot.h"
+#include "talk/base/task.h"
+
+namespace notifier {
+class AsyncNetworkAlive;
+
+// Detects the current network state and any changes to that.
+class NetworkStatusDetectorTask : public talk_base::Task,
+                                  public sigslot::has_slots<> {
+ public:
+  // Create an instance of (a subclass of) this class.
+  static NetworkStatusDetectorTask* Create(talk_base::Task* parent);
+
+  // Determines the current network state and
+  // then calls SignalNetworkStateDetected.
+  void DetectNetworkState();
+
+  // Fires whenever the network state is detected.
+  //   SignalNetworkStateDetected(was_alive, is_alive);
+  sigslot::signal2<bool, bool> SignalNetworkStateDetected;
+
+ protected:
+  explicit NetworkStatusDetectorTask(talk_base::Task* parent)
+    : talk_base::Task(parent),
+      initial_detection_done_(false),
+      is_alive_(false) {
+  }
+
+  virtual ~NetworkStatusDetectorTask() { }
+
+  virtual int ProcessStart() = 0;
+
+  // Stay around until aborted.
+  virtual int ProcessResponse() {
+    return STATE_BLOCKED;
+  }
+
+  void SetNetworkAlive(bool is_alive);
+
+ private:
+  bool initial_detection_done_;
+  bool is_alive_;
+
+  DISALLOW_COPY_AND_ASSIGN(NetworkStatusDetectorTask);
+};

[idana, 2009/09/10 05:44:37]

Blank lines.

+}  // namespace notifier
+#endif  // CHROME_BROWSER_SYNC_NOTIFIER_BASE_NETWORK_STATUS_DETECTOR_TASK_H_