Refactor IT2Me-specific functions into a HostObserver subclass.

remoting/host/it2me_observer.cc

+// 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.
+
+#include "remoting/host/it2me_observer.h"
+
+#include "base/bind.h"
+#include "remoting/host/chromoting_host.h"
+#include "remoting/host/chromoting_host_context.h"
+#include "remoting/host/continue_window.h"
+#include "remoting/host/disconnect_window.h"
+#include "remoting/host/local_input_monitor.h"
+
+namespace remoting {
+
+class It2MeObserver::TimerTask {
+ public:
+  TimerTask(base::MessageLoopProxy* message_loop,
+            const base::Closure& task,
+            int delay_ms)
+      : thread_proxy_(message_loop) {
+    thread_proxy_.PostDelayedTask(FROM_HERE, task, delay_ms);
+  }
+
+ private:
+  ScopedThreadProxy thread_proxy_;
+};
+
+
+It2MeObserver::It2MeObserver(ChromotingHost* host,
+                             ChromotingHostContext* context)
+    : host_(host),
+      context_(context),
+      is_monitoring_local_inputs_(false),
+      ui_thread_proxy_(context->ui_message_loop()) {
+}
+
+It2MeObserver::~It2MeObserver() {
+}
+
+void It2MeObserver::Init() {
+  InitFrom(DisconnectWindow::Create(),
+           ContinueWindow::Create(),
+           LocalInputMonitor::Create());
+}
+
+void It2MeObserver::InitFrom(DisconnectWindow* disconnect_window,
+                             ContinueWindow* continue_window,
+                             LocalInputMonitor* monitor) {
+  disconnect_window_.reset(disconnect_window);
+  continue_window_.reset(continue_window);
+  local_input_monitor_.reset(monitor);
+}
+
+void It2MeObserver::OnSignallingConnected(SignalStrategy* signal_strategy,
+                                          const std::string& full_jid) {
+}
+
+void It2MeObserver::OnSignallingDisconnected() {
+}
+
+void It2MeObserver::OnClientAuthenticated(const std::string& jid) {
+  authenticated_jid_ = jid;

[Sergey Ulanov, 2011/11/29 20:18:00]

add DCHECK(authenticated_jid_.empty()) here because we are not expecting more
than one concurrent connection.

[Lambros, 2011/11/30 20:47:02]

Done.

+
+  std::string username = jid.substr(0, jid.find('/'));
+  ui_thread_proxy_.PostTask(FROM_HERE, base::Bind(
+    &It2MeObserver::ProcessOnConnect, base::Unretained(this), username));
+}
+
+void It2MeObserver::OnClientDisconnected(const std::string& jid) {
+  if (jid == authenticated_jid_) {
+    authenticated_jid_.clear();
+    ui_thread_proxy_.PostTask(FROM_HERE, base::Bind(
+        &It2MeObserver::ProcessOnLastDisconnect, base::Unretained(this)));
+  }
+}
+
+void It2MeObserver::OnAccessDenied() {
+}
+
+void It2MeObserver::OnShutdown() {
+}
+
+void It2MeObserver::Shutdown() {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  MonitorLocalInputs(false);
+  ShowDisconnectWindow(false, std::string());
+  ShowContinueWindow(false);
+  StartContinueWindowTimer(false);
+
+  ui_thread_proxy_.Detach();
+}
+
+void It2MeObserver::OnConnect(const std::string& username) {
+  ui_thread_proxy_.PostTask(FROM_HERE, base::Bind(
+      &It2MeObserver::ProcessOnConnect, base::Unretained(this), username));
+}
+
+void It2MeObserver::OnLastDisconnect() {
+  ui_thread_proxy_.PostTask(FROM_HERE, base::Bind(
+      &It2MeObserver::ProcessOnLastDisconnect, base::Unretained(this)));
+}
+
+void It2MeObserver::ProcessOnConnect(const std::string& username) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  MonitorLocalInputs(true);
+  ShowDisconnectWindow(true, username);
+  StartContinueWindowTimer(true);
+}
+
+void It2MeObserver::ProcessOnLastDisconnect() {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  MonitorLocalInputs(false);
+  ShowDisconnectWindow(false, std::string());
+  ShowContinueWindow(false);
+  StartContinueWindowTimer(false);
+}
+
+void It2MeObserver::MonitorLocalInputs(bool enable) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  if (enable == is_monitoring_local_inputs_)
+    return;
+  if (enable) {
+    local_input_monitor_->Start(host_);
+  } else {
+    local_input_monitor_->Stop();
+  }
+  is_monitoring_local_inputs_ = enable;
+}
+
+void It2MeObserver::ShowDisconnectWindow(bool show,
+                                         const std::string& username) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  if (show) {
+    disconnect_window_->Show(host_, username);
+  } else {
+    disconnect_window_->Hide();
+  }
+}
+
+void It2MeObserver::ShowContinueWindow(bool show) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  if (show) {
+    continue_window_->Show(host_, base::Bind(
+        &It2MeObserver::ContinueSession, base::Unretained(this)));
+  } else {
+    continue_window_->Hide();
+  }
+}
+
+void It2MeObserver::ContinueSession(bool continue_session) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  if (continue_session) {
+    host_->PauseSession(false);
+    timer_task_.reset();
+    StartContinueWindowTimer(true);
+  } else {
+    host_->Shutdown(base::Closure());
+  }
+}
+
+void It2MeObserver::StartContinueWindowTimer(bool start) {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  if (start) {
+    timer_task_.reset(new TimerTask(
+        context_->ui_message_loop(),
+        base::Bind(&It2MeObserver::OnContinueWindowTimer,
+                   base::Unretained(this)),

[Sergey Ulanov, 2011/11/29 20:18:00]

nit: can this fit on the previous line?

[Lambros, 2011/11/30 20:47:02]

Not any more :)

+        kContinueWindowShowTimeoutMs));
+  } else if (!start) {

[Sergey Ulanov, 2011/11/29 20:18:00]

if(!start) is redundant here.

[Lambros, 2011/11/30 20:47:02]

Done.

+    timer_task_.reset();
+  }
+}
+
+void It2MeObserver::OnContinueWindowTimer() {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  host_->PauseSession(true);
+  ShowContinueWindow(true);
+
+  timer_task_.reset(new TimerTask(
+      context_->ui_message_loop(),
+      base::Bind(&It2MeObserver::OnShutdownHostTimer,
+                 base::Unretained(this)),

[Sergey Ulanov, 2011/11/29 20:18:00]

nit: move to the previous line.

[Lambros, 2011/11/30 20:47:02]

Won't fit.

+      kContinueWindowHideTimeoutMs));
+}
+
+void It2MeObserver::OnShutdownHostTimer() {
+  DCHECK(context_->ui_message_loop()->BelongsToCurrentThread());
+
+  ShowContinueWindow(false);
+  host_->Shutdown(base::Closure());
+}
+
+}  // namespace remoting