void
DataTransfer::MozGetDataAt(JSContext* aCx, const nsAString& aFormat,
uint32_t aIndex,
JS::MutableHandle<JS::Value> aRetval,
nsIPrincipal& aSubjectPrincipal,
mozilla::ErrorResult& aRv)
{
nsCOMPtr<nsIVariant> data;
aRv = GetDataAtInternal(aFormat, aIndex, &aSubjectPrincipal,
getter_AddRefs(data));
if (aRv.Failed()) {
return;
}
if (!data) {
aRetval.setNull();
return;
}
JS::Rooted<JS::Value> result(aCx);
if (!VariantToJsval(aCx, data, aRetval)) {
aRv = NS_ERROR_FAILURE;
return;
}
}
nsresult
DataTransfer::GetDataAtNoSecurityCheck(const nsAString& aFormat,
uint32_t aIndex,
nsIVariant** aData)
{
return GetDataAtInternal(aFormat, aIndex,
nsContentUtils::GetSystemPrincipal(), aData);
}
void
DataTransfer::GetData(const nsAString& aFormat, nsAString& aData,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv)
{
// return an empty string if data for the format was not found
aData.Truncate();
nsCOMPtr<nsIVariant> data;
nsresult rv =
GetDataAtInternal(aFormat, 0, &aSubjectPrincipal,
getter_AddRefs(data));
if (NS_FAILED(rv)) {
if (rv != NS_ERROR_DOM_INDEX_SIZE_ERR) {
aRv.Throw(rv);
}
return;
}
if (data) {
nsAutoString stringdata;
data->GetAsAString(stringdata);
// for the URL type, parse out the first URI from the list. The URIs are
// separated by newlines
nsAutoString lowercaseFormat;
nsContentUtils::ASCIIToLower(aFormat, lowercaseFormat);
if (lowercaseFormat.EqualsLiteral("url")) {
int32_t lastidx = 0, idx;
int32_t length = stringdata.Length();
while (lastidx < length) {
idx = stringdata.FindChar('\n', lastidx);
// lines beginning with # are comments
if (stringdata[lastidx] == '#') {
if (idx == -1) {
break;
}
}
else {
if (idx == -1) {
aData.Assign(Substring(stringdata, lastidx));
} else {
aData.Assign(Substring(stringdata, lastidx, idx - lastidx));
}
aData = nsContentUtils::TrimWhitespace<nsCRT::IsAsciiSpace>(aData,
true);
return;
}
lastidx = idx + 1;
}
}
else {
aData = stringdata;
}
}
}
FileList*
DataTransfer::GetFileListInternal(ErrorResult& aRv,
nsIPrincipal* aSubjectPrincipal)
{
if (mEventMessage != eDrop &&
mEventMessage != eLegacyDragDrop &&
mEventMessage != ePaste) {
return nullptr;
}
if (!mFileList) {
mFileList = new FileList(static_cast<nsIDOMDataTransfer*>(this));
uint32_t count = mItems.Length();
for (uint32_t i = 0; i < count; i++) {
nsCOMPtr<nsIVariant> variant;
aRv = GetDataAtInternal(NS_ConvertUTF8toUTF16(kFileMime), i,
aSubjectPrincipal, getter_AddRefs(variant));
if (aRv.Failed()) {
return nullptr;
}
if (!variant)
continue;
nsCOMPtr<nsISupports> supports;
nsresult rv = variant->GetAsISupports(getter_AddRefs(supports));
if (NS_FAILED(rv))
continue;
nsCOMPtr<nsIFile> file = do_QueryInterface(supports);
RefPtr<File> domFile;
if (file) {
MOZ_ASSERT(XRE_GetProcessType() == GeckoProcessType_Default,
"nsIFile objects are not expected on the content process");
bool isDir;
aRv = file->IsDirectory(&isDir);
if (NS_WARN_IF(aRv.Failed())) {
return nullptr;
}
if (isDir) {
continue;
}
domFile = File::CreateFromFile(GetParentObject(), file);
} else {
nsCOMPtr<BlobImpl> blobImpl = do_QueryInterface(supports);
if (!blobImpl) {
continue;
}
MOZ_ASSERT(blobImpl->IsFile());
domFile = File::Create(GetParentObject(), blobImpl);
MOZ_ASSERT(domFile);
}
mFileList->Append(domFile);
}
}
return mFileList;
}
