gecko/dom/bluetooth/BluetoothUtils.cpp

206 lines
6.4 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 "BluetoothDevice.h"
#include "BluetoothUtils.h"
#include "jsapi.h"
#include "mozilla/Scoped.h"
#include "mozilla/dom/bluetooth/BluetoothTypes.h"
#include "nsContentUtils.h"
#include "nsISystemMessagesInternal.h"
#include "nsTArray.h"
#include "nsString.h"
USING_BLUETOOTH_NAMESPACE
nsresult
mozilla::dom::bluetooth::StringArrayToJSArray(JSContext* aCx, JSObject* aGlobal,
const nsTArray<nsString>& aSourceArray,
JSObject** aResultArray)
{
NS_ASSERTION(aCx, "Null context!");
NS_ASSERTION(aGlobal, "Null global!");
JSAutoRequest ar(aCx);
JSAutoCompartment ac(aCx, aGlobal);
JSObject* arrayObj;
if (aSourceArray.IsEmpty()) {
arrayObj = JS_NewArrayObject(aCx, 0, nullptr);
} else {
uint32_t valLength = aSourceArray.Length();
mozilla::ScopedDeleteArray<jsval> valArray(new jsval[valLength]);
JS::AutoArrayRooter tvr(aCx, 0, valArray);
for (uint32_t index = 0; index < valLength; index++) {
JSString* s = JS_NewUCStringCopyN(aCx, aSourceArray[index].BeginReading(),
aSourceArray[index].Length());
if(!s) {
NS_WARNING("Memory allocation error!");
return NS_ERROR_OUT_OF_MEMORY;
}
valArray[index] = STRING_TO_JSVAL(s);
tvr.changeLength(index + 1);
}
arrayObj = JS_NewArrayObject(aCx, valLength, valArray);
}
if (!arrayObj) {
return NS_ERROR_OUT_OF_MEMORY;
}
// XXX This is not what Jonas wants. He wants it to be live.
// Followup at bug 717414
if (!JS_FreezeObject(aCx, arrayObj)) {
return NS_ERROR_FAILURE;
}
*aResultArray = arrayObj;
return NS_OK;
}
nsresult
mozilla::dom::bluetooth::BluetoothDeviceArrayToJSArray(JSContext* aCx, JSObject* aGlobal,
const nsTArray<nsRefPtr<BluetoothDevice> >& aSourceArray,
JSObject** aResultArray)
{
NS_ASSERTION(aCx, "Null context!");
NS_ASSERTION(aGlobal, "Null global!");
JSAutoRequest ar(aCx);
JSAutoCompartment ac(aCx, aGlobal);
JSObject* arrayObj;
if (aSourceArray.IsEmpty()) {
arrayObj = JS_NewArrayObject(aCx, 0, nullptr);
} else {
uint32_t valLength = aSourceArray.Length();
mozilla::ScopedDeleteArray<jsval> valArray(new jsval[valLength]);
JS::AutoArrayRooter tvr(aCx, 0, valArray);
for (uint32_t index = 0; index < valLength; index++) {
nsISupports* obj = aSourceArray[index]->ToISupports();
nsresult rv =
nsContentUtils::WrapNative(aCx, aGlobal, obj, &valArray[index]);
NS_ENSURE_SUCCESS(rv, rv);
tvr.changeLength(index + 1);
}
arrayObj = JS_NewArrayObject(aCx, valLength, valArray);
}
if (!arrayObj) {
return NS_ERROR_OUT_OF_MEMORY;
}
if (!JS_FreezeObject(aCx, arrayObj)) {
return NS_ERROR_FAILURE;
}
*aResultArray = arrayObj;
return NS_OK;
}
bool
mozilla::dom::bluetooth::SetJsObject(JSContext* aContext,
JSObject* aObj,
const InfallibleTArray<BluetoothNamedValue>& aData)
{
for (uint32_t i = 0; i < aData.Length(); i++) {
jsval v;
if (aData[i].value().type() == BluetoothValue::TnsString) {
nsString data = aData[i].value().get_nsString();
JSString* JsData = JS_NewStringCopyN(aContext,
NS_ConvertUTF16toUTF8(data).get(),
data.Length());
NS_ENSURE_TRUE(JsData, false);
v = STRING_TO_JSVAL(JsData);
} else if (aData[i].value().type() == BluetoothValue::Tuint32_t) {
int data = aData[i].value().get_uint32_t();
v = INT_TO_JSVAL(data);
} else if (aData[i].value().type() == BluetoothValue::Tbool) {
bool data = aData[i].value().get_bool();
v = BOOLEAN_TO_JSVAL(data);
} else {
NS_WARNING("SetJsObject: Parameter is not handled");
}
if (!JS_SetProperty(aContext, aObj,
NS_ConvertUTF16toUTF8(aData[i].name()).get(),
&v)) {
return false;
}
}
return true;
}
nsString
mozilla::dom::bluetooth::GetObjectPathFromAddress(const nsAString& aAdapterPath,
const nsAString& aDeviceAddress)
{
// The object path would be like /org/bluez/2906/hci0/dev_00_23_7F_CB_B4_F1,
// and the adapter path would be the first part of the object path, according
// to the example above, it's /org/bluez/2906/hci0.
nsString devicePath(aAdapterPath);
devicePath.AppendLiteral("/dev_");
devicePath.Append(aDeviceAddress);
devicePath.ReplaceChar(':', '_');
return devicePath;
}
nsString
mozilla::dom::bluetooth::GetAddressFromObjectPath(const nsAString& aObjectPath)
{
// The object path would be like /org/bluez/2906/hci0/dev_00_23_7F_CB_B4_F1,
// and the adapter path would be the first part of the object path, according
// to the example above, it's /org/bluez/2906/hci0.
nsString address(aObjectPath);
int addressHead = address.RFind("/") + 5;
MOZ_ASSERT(addressHead + BLUETOOTH_ADDRESS_LENGTH == address.Length());
address.Cut(0, addressHead);
address.ReplaceChar('_', ':');
return address;
}
bool
mozilla::dom::bluetooth::BroadcastSystemMessage(
const nsAString& aType,
const InfallibleTArray<BluetoothNamedValue>& aData)
{
JSContext* cx = nsContentUtils::GetSafeJSContext();
NS_ASSERTION(!::JS_IsExceptionPending(cx),
"Shouldn't get here when an exception is pending!");
JSAutoRequest jsar(cx);
JSObject* obj = JS_NewObject(cx, NULL, NULL, NULL);
if (!obj) {
NS_WARNING("Failed to new JSObject for system message!");
return false;
}
if (!SetJsObject(cx, obj, aData)) {
NS_WARNING("Failed to set properties of system message!");
return false;
}
nsCOMPtr<nsISystemMessagesInternal> systemMessenger =
do_GetService("@mozilla.org/system-message-internal;1");
if (!systemMessenger) {
NS_WARNING("Failed to get SystemMessenger service!");
return false;
}
systemMessenger->BroadcastMessage(aType, OBJECT_TO_JSVAL(obj));
return true;
}