Refactoring of the NetworkPortalDetector.

chrome/browser/chromeos/net/network_portal_detector_strategy.cc

+// Copyright 2014 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/chromeos/net/network_portal_detector_strategy.h"
+
+#include "base/logging.h"
+#include "chromeos/network/network_handler.h"
+#include "chromeos/network/network_state.h"
+#include "chromeos/network/network_state_handler.h"
+
+namespace chromeos {
+
+namespace {
+
+const NetworkState* DefaultNetwork() {
+  return NetworkHandler::Get()->network_state_handler()->DefaultNetwork();
+}
+
+std::string DefaultNetworkName() {
+  const NetworkState* network = DefaultNetwork();
+  return network ? network->name() : std::string();
+}
+
+}  // namespace
+
+// PortalDetectorStrategy -----------------------------------------------------
+
+// static
+base::TimeDelta PortalDetectorStrategy::request_timeout_for_testing_;
+
+// static
+bool PortalDetectorStrategy::request_timeout_for_testing_initialized_ = false;
+
+// static
+base::TimeDelta PortalDetectorStrategy::min_time_between_attempts_for_testing_;
+
+// static
+bool
+    PortalDetectorStrategy::min_time_between_attempts_for_testing_initialized_ =
+        false;
+
+PortalDetectorStrategy::PortalDetectorStrategy(Delegate* delegate)
+    : delegate_(delegate) {}
+PortalDetectorStrategy::~PortalDetectorStrategy() {}
+
+void PortalDetectorStrategy::Reset() { ResetImpl(); }
+
+bool PortalDetectorStrategy::CanPerformAttempt() {
+  return CanPerformAttemptImpl();
+}
+
+base::TimeDelta PortalDetectorStrategy::GetDelayBeforeCurrentAttempt() {
+  if (min_time_between_attempts_for_testing_initialized_)
+    return min_time_between_attempts_for_testing_;
+  return GetDelayBeforeCurrentAttemptImpl();
+}
+
+base::TimeDelta PortalDetectorStrategy::GetCurrentAttemptTimeout() {
+  if (request_timeout_for_testing_initialized_)
+    return request_timeout_for_testing_;
+  return GetCurrentAttemptTimeoutImpl();
+}
+
+void PortalDetectorStrategy::OnAttemptStarted() {
+  attempt_start_time_ = GetCurrentTimeTicks();
+  OnAttemptStartedImpl();
+}
+
+void PortalDetectorStrategy::OnDetectionCompleted() {
+  return OnDetectionCompletedImpl();
+}
+
+void PortalDetectorStrategy::ResetImpl() {}
+
+bool PortalDetectorStrategy::CanPerformAttemptImpl() { return false; }
+
+base::TimeDelta PortalDetectorStrategy::GetDelayBeforeCurrentAttemptImpl() {
+  return base::TimeDelta();
+}
+
+base::TimeDelta PortalDetectorStrategy::GetCurrentAttemptTimeoutImpl() {
+  return base::TimeDelta();
+}
+
+void PortalDetectorStrategy::OnAttemptStartedImpl() {}
+
+void PortalDetectorStrategy::OnDetectionCompletedImpl() {}
+
+// LoginScreenStrategy ---------------------------------------------------------
+
+LoginScreenStrategy::LoginScreenStrategy(
+    PortalDetectorStrategy::Delegate* delegate)
+    : PortalDetectorStrategy(delegate),
+      attempt_count_(0),
+      detection_completed_(false) {}
+
+LoginScreenStrategy::~LoginScreenStrategy() {}
+
+void LoginScreenStrategy::ResetImpl() {
+  attempt_count_ = 0;
+  detection_completed_ = false;
+}
+
+bool LoginScreenStrategy::CanPerformAttemptImpl() {
+  return !detection_completed_ && attempt_count_ < kMaxRequestAttempts;
+}
+
+base::TimeDelta LoginScreenStrategy::GetDelayBeforeCurrentAttemptImpl() {
+  DCHECK(CanPerformAttempt());
+  if (!attempt_count_)
+    return base::TimeDelta();
+
+  base::TimeTicks now = GetCurrentTimeTicks();
+  base::TimeDelta delay =
+      base::TimeDelta::FromSeconds(kMinTimeBetweenAttemptsSec);
+  base::TimeDelta elapsed;
+  if (now > attempt_start_time_)
+    elapsed = now - attempt_start_time_;
+  if (delay > elapsed)
+    return delay - elapsed;
+  return base::TimeDelta();
+}
+
+base::TimeDelta LoginScreenStrategy::GetCurrentAttemptTimeoutImpl() {
+  int timeout = DefaultNetwork() ? attempt_count_ * kBaseRequestTimeoutSec
+                                 : kBaseRequestTimeoutSec;
+  return base::TimeDelta::FromSeconds(timeout);
+}
+
+void LoginScreenStrategy::OnAttemptStartedImpl() {
+  ++attempt_count_;
+  VLOG(1) << "Detection attempt on login screen started: "
+          << "name=" << DefaultNetworkName() << ", "
+          << "attempt=" << attempt_count_ << " of " << kMaxRequestAttempts
+          << ".";
+}
+
+void LoginScreenStrategy::OnDetectionCompletedImpl() {
+  detection_completed_ = true;
+}
+
+// ErrorScreenStrategy --------------------------------------------------------
+
+ErrorScreenStrategy::ErrorScreenStrategy(
+    PortalDetectorStrategy::Delegate* delegate)
+    : PortalDetectorStrategy(delegate),
+      delay_between_attempts_(
+          base::TimeDelta::FromSeconds(kMinTimeBetweenAttemptsSec)) {}
+
+ErrorScreenStrategy::~ErrorScreenStrategy() {}
+
+bool ErrorScreenStrategy::CanPerformAttemptImpl() { return true; }
+
+base::TimeDelta ErrorScreenStrategy::GetDelayBeforeCurrentAttemptImpl() {
+  return base::TimeDelta::FromSeconds(kMinTimeBetweenAttemptsSec);
+}
+
+base::TimeDelta ErrorScreenStrategy::GetCurrentAttemptTimeoutImpl() {
+  return base::TimeDelta::FromSeconds(kRequestTimeoutSec);
+}
+
+void ErrorScreenStrategy::OnAttemptStartedImpl() {
+  VLOG(1) << "Detection attempt on error screen started: "
+          << "name=" << DefaultNetworkName();
+}
+
+}  // namespace chromeos