gecko-dev/dom/base/nsFormData.cpp

173 строки
4.8 KiB
C++

/* 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 "nsFormData.h"
#include "nsIVariant.h"
#include "nsIInputStream.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/HTMLFormElement.h"
#include "mozilla/dom/FormDataBinding.h"
using namespace mozilla;
using namespace mozilla::dom;
nsFormData::nsFormData(nsISupports* aOwner)
: nsFormSubmission(NS_LITERAL_CSTRING("UTF-8"), nullptr)
, mOwner(aOwner)
{
}
// -------------------------------------------------------------------------
// nsISupports
NS_IMPL_CYCLE_COLLECTION_CLASS(nsFormData)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsFormData)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mOwner)
for (uint32_t i = 0, len = tmp->mFormData.Length(); i < len; ++i) {
ImplCycleCollectionUnlink(tmp->mFormData[i].fileValue);
}
NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsFormData)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mOwner)
for (uint32_t i = 0, len = tmp->mFormData.Length(); i < len; ++i) {
ImplCycleCollectionTraverse(cb,tmp->mFormData[i].fileValue,
"mFormData[i].fileValue", 0);
}
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_SCRIPT_OBJECTS
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_WRAPPERCACHE(nsFormData)
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsFormData)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsFormData)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsFormData)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsIDOMFormData)
NS_INTERFACE_MAP_ENTRY(nsIXHRSendable)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMFormData)
NS_INTERFACE_MAP_END
// -------------------------------------------------------------------------
// nsFormSubmission
nsresult
nsFormData::GetEncodedSubmission(nsIURI* aURI,
nsIInputStream** aPostDataStream)
{
NS_NOTREACHED("Shouldn't call nsFormData::GetEncodedSubmission");
return NS_OK;
}
void
nsFormData::Append(const nsAString& aName, const nsAString& aValue)
{
AddNameValuePair(aName, aValue);
}
void
nsFormData::Append(const nsAString& aName, File& aBlob,
const Optional<nsAString>& aFilename)
{
nsString filename;
if (aFilename.WasPassed()) {
filename = aFilename.Value();
} else {
filename.SetIsVoid(true);
}
AddNameFilePair(aName, &aBlob, filename);
}
// -------------------------------------------------------------------------
// nsIDOMFormData
NS_IMETHODIMP
nsFormData::Append(const nsAString& aName, nsIVariant* aValue)
{
uint16_t dataType;
nsresult rv = aValue->GetDataType(&dataType);
NS_ENSURE_SUCCESS(rv, rv);
if (dataType == nsIDataType::VTYPE_INTERFACE ||
dataType == nsIDataType::VTYPE_INTERFACE_IS) {
nsCOMPtr<nsISupports> supports;
nsID *iid;
rv = aValue->GetAsInterface(&iid, getter_AddRefs(supports));
NS_ENSURE_SUCCESS(rv, rv);
nsMemory::Free(iid);
nsCOMPtr<nsIDOMBlob> domBlob = do_QueryInterface(supports);
nsRefPtr<File> blob = static_cast<File*>(domBlob.get());
if (domBlob) {
Optional<nsAString> temp;
Append(aName, *blob, temp);
return NS_OK;
}
}
char16_t* stringData = nullptr;
uint32_t stringLen = 0;
rv = aValue->GetAsWStringWithSize(&stringLen, &stringData);
NS_ENSURE_SUCCESS(rv, rv);
nsString valAsString;
valAsString.Adopt(stringData, stringLen);
Append(aName, valAsString);
return NS_OK;
}
/* virtual */ JSObject*
nsFormData::WrapObject(JSContext* aCx)
{
return FormDataBinding::Wrap(aCx, this);
}
/* static */ already_AddRefed<nsFormData>
nsFormData::Constructor(const GlobalObject& aGlobal,
const Optional<NonNull<HTMLFormElement> >& aFormElement,
ErrorResult& aRv)
{
nsRefPtr<nsFormData> formData = new nsFormData(aGlobal.GetAsSupports());
if (aFormElement.WasPassed()) {
aRv = aFormElement.Value().WalkFormElements(formData);
}
return formData.forget();
}
// -------------------------------------------------------------------------
// nsIXHRSendable
NS_IMETHODIMP
nsFormData::GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
nsACString& aContentType, nsACString& aCharset)
{
nsFSMultipartFormData fs(NS_LITERAL_CSTRING("UTF-8"), nullptr);
for (uint32_t i = 0; i < mFormData.Length(); ++i) {
if (mFormData[i].valueIsFile) {
fs.AddNameFilePair(mFormData[i].name, mFormData[i].fileValue,
mFormData[i].filename);
}
else {
fs.AddNameValuePair(mFormData[i].name, mFormData[i].stringValue);
}
}
fs.GetContentType(aContentType);
aCharset.Truncate();
*aContentLength = 0;
NS_ADDREF(*aBody = fs.GetSubmissionBody(aContentLength));
return NS_OK;
}