gecko-dev/dom/file/FileList.cpp

70 строки
1.7 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=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 "mozilla/dom/Directory.h"
#include "mozilla/dom/FileList.h"
#include "mozilla/dom/FileListBinding.h"
#include "mozilla/dom/File.h"
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(FileList, mFiles, mParent)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(FileList)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(FileList)
NS_IMPL_CYCLE_COLLECTING_RELEASE(FileList)
JSObject*
FileList::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return mozilla::dom::FileList_Binding::Wrap(aCx, this, aGivenProto);
}
File*
FileList::Item(uint32_t aIndex) const
{
if (aIndex >= mFiles.Length()) {
return nullptr;
}
return mFiles[aIndex];
}
File*
FileList::IndexedGetter(uint32_t aIndex, bool& aFound) const
{
aFound = aIndex < mFiles.Length();
return Item(aIndex);
}
void
FileList::ToSequence(Sequence<RefPtr<File>>& aSequence,
ErrorResult& aRv) const
{
MOZ_ASSERT(aSequence.IsEmpty());
if (mFiles.IsEmpty()) {
return;
}
if (!aSequence.SetLength(mFiles.Length(),
mozilla::fallible_t())) {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
for (uint32_t i = 0; i < mFiles.Length(); ++i) {
aSequence[i] = mFiles[i];
}
}
} // namespace dom
} // namespace mozilla