gecko-dev/dom/bluetooth2/BluetoothDevice.cpp

292 строки
8.7 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 "BluetoothClassOfDevice.h"
#include "BluetoothDevice.h"
#include "BluetoothReplyRunnable.h"
#include "BluetoothService.h"
#include "BluetoothUtils.h"
#include "mozilla/dom/bluetooth/BluetoothTypes.h"
#include "mozilla/dom/BluetoothAttributeEvent.h"
#include "mozilla/dom/BluetoothDevice2Binding.h"
#include "mozilla/dom/Promise.h"
using namespace mozilla;
using namespace mozilla::dom;
USING_BLUETOOTH_NAMESPACE
NS_IMPL_CYCLE_COLLECTION_INHERITED(BluetoothDevice, DOMEventTargetHelper, mCod)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION_INHERITED(BluetoothDevice)
NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
NS_IMPL_ADDREF_INHERITED(BluetoothDevice, DOMEventTargetHelper)
NS_IMPL_RELEASE_INHERITED(BluetoothDevice, DOMEventTargetHelper)
class FetchUuidsTask : public BluetoothReplyRunnable
{
public:
FetchUuidsTask(Promise* aPromise,
const nsAString& aName,
BluetoothDevice* aDevice)
: BluetoothReplyRunnable(nullptr /* DOMRequest */, aPromise, aName)
, mDevice(aDevice)
{
MOZ_ASSERT(aPromise);
MOZ_ASSERT(aDevice);
}
bool ParseSuccessfulReply(JS::MutableHandle<JS::Value> aValue)
{
aValue.setUndefined();
const BluetoothValue& v = mReply->get_BluetoothReplySuccess().value();
NS_ENSURE_TRUE(v.type() == BluetoothValue::TArrayOfnsString, false);
const InfallibleTArray<nsString>& uuids = v.get_ArrayOfnsString();
AutoJSAPI jsapi;
NS_ENSURE_TRUE(jsapi.Init(mDevice->GetParentObject()), false);
JSContext* cx = jsapi.cx();
if (!ToJSValue(cx, uuids, aValue)) {
BT_WARNING("Cannot create JS array!");
JS_ClearPendingException(cx);
return false;
}
return true;
}
virtual void ReleaseMembers() MOZ_OVERRIDE
{
BluetoothReplyRunnable::ReleaseMembers();
mDevice = nullptr;
}
private:
nsRefPtr<BluetoothDevice> mDevice;
};
BluetoothDevice::BluetoothDevice(nsPIDOMWindow* aWindow,
const BluetoothValue& aValue)
: DOMEventTargetHelper(aWindow)
, mPaired(false)
{
MOZ_ASSERT(aWindow);
MOZ_ASSERT(IsDOMBinding());
mCod = BluetoothClassOfDevice::Create(aWindow);
const InfallibleTArray<BluetoothNamedValue>& values =
aValue.get_ArrayOfBluetoothNamedValue();
for (uint32_t i = 0; i < values.Length(); ++i) {
SetPropertyByValue(values[i]);
}
BluetoothService* bs = BluetoothService::Get();
NS_ENSURE_TRUE_VOID(bs);
bs->RegisterBluetoothSignalHandler(mAddress, this);
}
BluetoothDevice::~BluetoothDevice()
{
BluetoothService* bs = BluetoothService::Get();
// bs can be null on shutdown, where destruction might happen.
NS_ENSURE_TRUE_VOID(bs);
bs->UnregisterBluetoothSignalHandler(mAddress, this);
}
void
BluetoothDevice::DisconnectFromOwner()
{
DOMEventTargetHelper::DisconnectFromOwner();
BluetoothService* bs = BluetoothService::Get();
NS_ENSURE_TRUE_VOID(bs);
bs->UnregisterBluetoothSignalHandler(mAddress, this);
}
void
BluetoothDevice::SetPropertyByValue(const BluetoothNamedValue& aValue)
{
const nsString& name = aValue.name();
const BluetoothValue& value = aValue.value();
if (name.EqualsLiteral("Name")) {
mName = value.get_nsString();
} else if (name.EqualsLiteral("Address")) {
mAddress = value.get_nsString();
} else if (name.EqualsLiteral("Cod")) {
mCod->Update(value.get_uint32_t());
} else if (name.EqualsLiteral("Paired")) {
mPaired = value.get_bool();
} else if (name.EqualsLiteral("UUIDs")) {
// We assume the received uuids array is sorted without duplicate items.
// If it's not, we require additional processing before assigning it
// directly.
mUuids = value.get_ArrayOfnsString();
BluetoothDeviceBinding::ClearCachedUuidsValue(this);
} else {
BT_WARNING("Not handling device property: %s",
NS_ConvertUTF16toUTF8(name).get());
}
}
already_AddRefed<Promise>
BluetoothDevice::FetchUuids(ErrorResult& aRv)
{
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(GetOwner());
if (!global) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsRefPtr<Promise> promise = Promise::Create(global, aRv);
NS_ENSURE_TRUE(!aRv.Failed(), nullptr);
BluetoothService* bs = BluetoothService::Get();
BT_ENSURE_TRUE_REJECT(bs, NS_ERROR_NOT_AVAILABLE);
nsRefPtr<BluetoothReplyRunnable> result =
new FetchUuidsTask(promise,
NS_LITERAL_STRING("FetchUuids"),
this);
nsresult rv = bs->FetchUuidsInternal(mAddress, result);
BT_ENSURE_TRUE_REJECT(NS_SUCCEEDED(rv), NS_ERROR_DOM_OPERATION_ERR);
return promise.forget();
}
// static
already_AddRefed<BluetoothDevice>
BluetoothDevice::Create(nsPIDOMWindow* aWindow,
const BluetoothValue& aValue)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aWindow);
nsRefPtr<BluetoothDevice> device = new BluetoothDevice(aWindow, aValue);
return device.forget();
}
void
BluetoothDevice::Notify(const BluetoothSignal& aData)
{
BT_LOGD("[D] %s", NS_ConvertUTF16toUTF8(aData.name()).get());
BluetoothValue v = aData.value();
if (aData.name().EqualsLiteral("PropertyChanged")) {
HandlePropertyChanged(v);
} else {
BT_WARNING("Not handling device signal: %s",
NS_ConvertUTF16toUTF8(aData.name()).get());
}
}
BluetoothDeviceAttribute
BluetoothDevice::ConvertStringToDeviceAttribute(const nsAString& aString)
{
using namespace
mozilla::dom::BluetoothDeviceAttributeValues;
for (size_t index = 0; index < ArrayLength(strings) - 1; index++) {
if (aString.LowerCaseEqualsASCII(strings[index].value,
strings[index].length)) {
return static_cast<BluetoothDeviceAttribute>(index);
}
}
return BluetoothDeviceAttribute::Unknown;
}
bool
BluetoothDevice::IsDeviceAttributeChanged(BluetoothDeviceAttribute aType,
const BluetoothValue& aValue)
{
switch (aType) {
case BluetoothDeviceAttribute::Cod:
MOZ_ASSERT(aValue.type() == BluetoothValue::Tuint32_t);
return !mCod->Equals(aValue.get_uint32_t());
case BluetoothDeviceAttribute::Name:
MOZ_ASSERT(aValue.type() == BluetoothValue::TnsString);
return !mName.Equals(aValue.get_nsString());
case BluetoothDeviceAttribute::Paired:
MOZ_ASSERT(aValue.type() == BluetoothValue::Tbool);
return mPaired != aValue.get_bool();
case BluetoothDeviceAttribute::Uuids: {
MOZ_ASSERT(aValue.type() == BluetoothValue::TArrayOfnsString);
const InfallibleTArray<nsString>& uuids = aValue.get_ArrayOfnsString();
// We assume the received uuids array is sorted without duplicate items.
// If it's not, we require additional processing before comparing it
// directly.
return mUuids != uuids;
}
default:
BT_WARNING("Type %d is not handled", uint32_t(aType));
return false;
}
}
void
BluetoothDevice::HandlePropertyChanged(const BluetoothValue& aValue)
{
MOZ_ASSERT(aValue.type() == BluetoothValue::TArrayOfBluetoothNamedValue);
const InfallibleTArray<BluetoothNamedValue>& arr =
aValue.get_ArrayOfBluetoothNamedValue();
nsTArray<nsString> types;
for (uint32_t i = 0, propCount = arr.Length(); i < propCount; ++i) {
BluetoothDeviceAttribute type =
ConvertStringToDeviceAttribute(arr[i].name());
// Non-BluetoothDeviceAttribute properties
if (type == BluetoothDeviceAttribute::Unknown) {
SetPropertyByValue(arr[i]);
continue;
}
// BluetoothDeviceAttribute properties
if (IsDeviceAttributeChanged(type, arr[i].value())) {
SetPropertyByValue(arr[i]);
BT_APPEND_ENUM_STRING(types, BluetoothDeviceAttribute, type);
}
}
DispatchAttributeEvent(types);
}
void
BluetoothDevice::DispatchAttributeEvent(const nsTArray<nsString>& aTypes)
{
NS_ENSURE_TRUE_VOID(aTypes.Length());
AutoJSAPI jsapi;
NS_ENSURE_TRUE_VOID(jsapi.Init(GetOwner()));
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> value(cx);
if (!ToJSValue(cx, aTypes, &value)) {
JS_ClearPendingException(cx);
return;
}
RootedDictionary<BluetoothAttributeEventInit> init(cx);
init.mAttrs = value;
nsRefPtr<BluetoothAttributeEvent> event =
BluetoothAttributeEvent::Constructor(this,
NS_LITERAL_STRING("attributechanged"),
init);
DispatchTrustedEvent(event);
}
JSObject*
BluetoothDevice::WrapObject(JSContext* aContext)
{
return BluetoothDeviceBinding::Wrap(aContext, this);
}