device/bluetooth/bluetooth_discovery_session.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "device/bluetooth/bluetooth_discovery_session.h"
   6
   7 #include "base/bind.h"
   8 #include "device/bluetooth/bluetooth_adapter.h"
   9
  10 namespace device {
  11
  12 BluetoothDiscoverySession::BluetoothDiscoverySession(
  13     scoped_refptr<BluetoothAdapter> adapter)
  14     : active_(true), adapter_(adapter), weak_ptr_factory_(this) {
  15   DCHECK(adapter_.get());
  16 }
  17
  18 BluetoothDiscoverySession::BluetoothDiscoverySession()
  19     : active_(false), weak_ptr_factory_(this) {}
  20
  21 BluetoothDiscoverySession::~BluetoothDiscoverySession() {
  22   // |adapter_| may be NULL if this instance was initialized as a mock.
  23   if (!adapter_.get()) {
  24     DCHECK(!active_);
  25     return;
  26   }
  27   Stop(base::Bind(&base::DoNothing), base::Bind(&base::DoNothing));
  28   MarkAsInactive();
  29 }
  30
  31 bool BluetoothDiscoverySession::IsActive() const {
  32   return active_;
  33 }
  34
  35 void BluetoothDiscoverySession::Stop(
  36     const base::Closure& callback,
  37     const ErrorCallback& error_callback) {
  38   if (!active_) {
  39     LOG(WARNING) << "Discovery session not active. Cannot stop.";
  40     error_callback.Run();
  41     return;
  42   }
  43   VLOG(1) << "Stopping device discovery session.";
  44   DCHECK(adapter_.get());
  45   adapter_->RemoveDiscoverySession(
  46       base::Bind(&BluetoothDiscoverySession::OnStop,
  47                  weak_ptr_factory_.GetWeakPtr(),
  48                  callback),
  49       error_callback);
  50 }
  51
  52 void BluetoothDiscoverySession::OnStop(const base::Closure& callback) {
  53   MarkAsInactive();
  54   callback.Run();
  55 }
  56
  57 void BluetoothDiscoverySession::MarkAsInactive() {
  58   if (!active_)
  59     return;
  60   active_ = false;
  61   DCHECK(adapter_.get());
  62   adapter_->DiscoverySessionBecameInactive(this);
  63 }
  64
  65 }  // namespace device