gecko-dev/dom/bluetooth/BluetoothHidManager.cpp
Eric Chou 1a2e41ef89 Bug 976943 - Replace OnConnect/OnDisconnect with one function, f=btian, r=gyeh
In BluetoothProfileController, it's meaningless to separate OnConnect
and OnDisconnect since the following steps would be the same for both
cases. Therefore I introduced a function called NotifyCompletion() for
each profile manager to report the completion of connecting/disconnecting
operations.
2014-03-06 19:26:28 +08:00

279 lines
7.0 KiB
C++

/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "base/basictypes.h"
#include "BluetoothHidManager.h"
#include "BluetoothCommon.h"
#include "BluetoothService.h"
#include "BluetoothUtils.h"
#include "mozilla/dom/bluetooth/BluetoothTypes.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPtr.h"
#include "nsIObserverService.h"
#include "MainThreadUtils.h"
using namespace mozilla;
USING_BLUETOOTH_NAMESPACE
namespace {
StaticRefPtr<BluetoothHidManager> sBluetoothHidManager;
bool sInShutdown = false;
} // anonymous namespace
NS_IMETHODIMP
BluetoothHidManager::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
MOZ_ASSERT(sBluetoothHidManager);
if (!strcmp(aTopic, NS_XPCOM_SHUTDOWN_OBSERVER_ID)) {
HandleShutdown();
return NS_OK;
}
MOZ_ASSERT(false, "BluetoothHidManager got unexpected topic!");
return NS_ERROR_UNEXPECTED;
}
BluetoothHidManager::BluetoothHidManager()
{
Reset();
}
void
BluetoothHidManager::Reset()
{
mConnected = false;
mController = nullptr;
}
bool
BluetoothHidManager::Init()
{
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
NS_ENSURE_TRUE(obs, false);
if (NS_FAILED(obs->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, false))) {
BT_WARNING("Failed to add shutdown observer!");
return false;
}
return true;
}
BluetoothHidManager::~BluetoothHidManager()
{
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
NS_ENSURE_TRUE_VOID(obs);
if (NS_FAILED(obs->RemoveObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID))) {
BT_WARNING("Failed to remove shutdown observer!");
}
}
//static
BluetoothHidManager*
BluetoothHidManager::Get()
{
MOZ_ASSERT(NS_IsMainThread());
// If we already exist, exit early
if (sBluetoothHidManager) {
return sBluetoothHidManager;
}
// If we're in shutdown, don't create a new instance
NS_ENSURE_FALSE(sInShutdown, nullptr);
// Create a new instance, register, and return
BluetoothHidManager* manager = new BluetoothHidManager();
NS_ENSURE_TRUE(manager->Init(), nullptr);
sBluetoothHidManager = manager;
return sBluetoothHidManager;
}
void
BluetoothHidManager::HandleShutdown()
{
MOZ_ASSERT(NS_IsMainThread());
sInShutdown = true;
Disconnect(nullptr);
sBluetoothHidManager = nullptr;
}
void
BluetoothHidManager::Connect(const nsAString& aDeviceAddress,
BluetoothProfileController* aController)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(!aDeviceAddress.IsEmpty());
MOZ_ASSERT(aController && !mController);
BluetoothService* bs = BluetoothService::Get();
if (!bs || sInShutdown) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
return;
}
if (mConnected) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_ALREADY_CONNECTED));
return;
}
mDeviceAddress = aDeviceAddress;
mController = aController;
if (NS_FAILED(bs->SendInputMessage(aDeviceAddress,
NS_LITERAL_STRING("Connect")))) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
return;
}
}
void
BluetoothHidManager::Disconnect(BluetoothProfileController* aController)
{
MOZ_ASSERT(NS_IsMainThread());
BluetoothService* bs = BluetoothService::Get();
if (!bs) {
if (aController) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
}
return;
}
if (!mConnected) {
if (aController) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_ALREADY_DISCONNECTED));
}
return;
}
MOZ_ASSERT(!mDeviceAddress.IsEmpty());
MOZ_ASSERT(!mController);
mController = aController;
if (NS_FAILED(bs->SendInputMessage(mDeviceAddress,
NS_LITERAL_STRING("Disconnect")))) {
aController->NotifyCompletion(NS_LITERAL_STRING(ERR_NO_AVAILABLE_RESOURCE));
return;
}
}
void
BluetoothHidManager::OnConnect(const nsAString& aErrorStr)
{
MOZ_ASSERT(NS_IsMainThread());
/**
* On the one hand, notify the controller that we've done for outbound
* connections. On the other hand, we do nothing for inbound connections.
*/
NS_ENSURE_TRUE_VOID(mController);
nsRefPtr<BluetoothProfileController> controller = mController.forget();
controller->NotifyCompletion(aErrorStr);
}
void
BluetoothHidManager::OnDisconnect(const nsAString& aErrorStr)
{
MOZ_ASSERT(NS_IsMainThread());
/**
* On the one hand, notify the controller that we've done for outbound
* connections. On the other hand, we do nothing for inbound connections.
*/
NS_ENSURE_TRUE_VOID(mController);
nsRefPtr<BluetoothProfileController> controller = mController.forget();
controller->NotifyCompletion(aErrorStr);
}
bool
BluetoothHidManager::IsConnected()
{
return mConnected;
}
void
BluetoothHidManager::HandleInputPropertyChanged(const BluetoothSignal& aSignal)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aSignal.value().type() == BluetoothValue::TArrayOfBluetoothNamedValue);
const InfallibleTArray<BluetoothNamedValue>& arr =
aSignal.value().get_ArrayOfBluetoothNamedValue();
MOZ_ASSERT(arr.Length() == 1);
const nsString& name = arr[0].name();
const BluetoothValue& value = arr[0].value();
if (name.EqualsLiteral("Connected")) {
MOZ_ASSERT(value.type() == BluetoothValue::Tbool);
MOZ_ASSERT(mConnected != value.get_bool());
mConnected = value.get_bool();
NotifyStatusChanged();
if (mConnected) {
OnConnect(EmptyString());
} else {
OnDisconnect(EmptyString());
}
}
}
void
BluetoothHidManager::NotifyStatusChanged()
{
MOZ_ASSERT(NS_IsMainThread());
NS_NAMED_LITERAL_STRING(type, BLUETOOTH_HID_STATUS_CHANGED_ID);
InfallibleTArray<BluetoothNamedValue> parameters;
BluetoothValue v = mConnected;
parameters.AppendElement(
BluetoothNamedValue(NS_LITERAL_STRING("connected"), v));
v = mDeviceAddress;
parameters.AppendElement(
BluetoothNamedValue(NS_LITERAL_STRING("address"), v));
if (!BroadcastSystemMessage(type, parameters)) {
BT_WARNING("Failed to broadcast system message to settings");
return;
}
}
void
BluetoothHidManager::OnGetServiceChannel(const nsAString& aDeviceAddress,
const nsAString& aServiceUuid,
int aChannel)
{
// Do nothing here as bluez acquires service channel and connects for us
}
void
BluetoothHidManager::OnUpdateSdpRecords(const nsAString& aDeviceAddress)
{
// Do nothing here as bluez acquires service channel and connects for us
}
void
BluetoothHidManager::GetAddress(nsAString& aDeviceAddress)
{
aDeviceAddress = mDeviceAddress;
}
NS_IMPL_ISUPPORTS1(BluetoothHidManager, nsIObserver)