2001-09-25 22:53:13 +00:00
|
|
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
2012-05-21 11:12:37 +00:00
|
|
|
/* 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/. */
|
1998-11-24 00:43:31 +00:00
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
#include "mozilla/TransactionStack.h"
|
2018-03-22 14:07:36 +00:00
|
|
|
|
2012-07-13 06:33:42 +00:00
|
|
|
#include "nsCOMPtr.h"
|
2009-05-09 04:59:25 +00:00
|
|
|
#include "nsCycleCollectionParticipant.h"
|
2012-07-13 06:33:42 +00:00
|
|
|
#include "nsISupportsUtils.h"
|
|
|
|
#include "nscore.h"
|
2018-03-22 14:07:36 +00:00
|
|
|
#include "TransactionItem.h"
|
1998-11-24 00:43:31 +00:00
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
namespace mozilla {
|
2018-03-22 14:07:36 +00:00
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
class TransactionStackDeallocator final : public nsDequeFunctor {
|
2017-11-06 03:37:28 +00:00
|
|
|
virtual void operator()(void* aObject) override {
|
2018-03-22 14:07:36 +00:00
|
|
|
RefPtr<TransactionItem> releaseMe =
|
|
|
|
dont_AddRef(static_cast<TransactionItem*>(aObject));
|
2016-03-08 01:12:07 +00:00
|
|
|
}
|
|
|
|
};
|
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
TransactionStack::TransactionStack(Type aType)
|
|
|
|
: nsDeque(new TransactionStackDeallocator()), mType(aType) {}
|
1998-11-24 00:43:31 +00:00
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
TransactionStack::~TransactionStack() { Clear(); }
|
1998-11-24 00:43:31 +00:00
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
void TransactionStack::Push(TransactionItem* aTransactionItem) {
|
2016-03-08 01:12:07 +00:00
|
|
|
if (!aTransactionItem) {
|
2012-03-02 20:08:40 +00:00
|
|
|
return;
|
|
|
|
}
|
1998-11-24 00:43:31 +00:00
|
|
|
|
2018-03-22 14:07:36 +00:00
|
|
|
RefPtr<TransactionItem> item(aTransactionItem);
|
2016-03-03 21:04:25 +00:00
|
|
|
Push(item.forget());
|
|
|
|
}
|
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
void TransactionStack::Push(
|
|
|
|
already_AddRefed<TransactionItem> aTransactionItem) {
|
2018-03-22 14:07:36 +00:00
|
|
|
RefPtr<TransactionItem> item(aTransactionItem);
|
2016-03-03 21:04:25 +00:00
|
|
|
if (!item) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2016-03-08 01:12:07 +00:00
|
|
|
nsDeque::Push(item.forget().take());
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:07:36 +00:00
|
|
|
already_AddRefed<TransactionItem> TransactionStack::Pop() {
|
|
|
|
RefPtr<TransactionItem> item =
|
|
|
|
dont_AddRef(static_cast<TransactionItem*>(nsDeque::Pop()));
|
2016-03-08 01:12:07 +00:00
|
|
|
return item.forget();
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:07:36 +00:00
|
|
|
already_AddRefed<TransactionItem> TransactionStack::PopBottom() {
|
|
|
|
RefPtr<TransactionItem> item =
|
|
|
|
dont_AddRef(static_cast<TransactionItem*>(nsDeque::PopFront()));
|
2016-03-08 01:12:07 +00:00
|
|
|
return item.forget();
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:07:36 +00:00
|
|
|
already_AddRefed<TransactionItem> TransactionStack::Peek() {
|
|
|
|
RefPtr<TransactionItem> item = static_cast<TransactionItem*>(nsDeque::Peek());
|
2016-03-08 01:12:07 +00:00
|
|
|
return item.forget();
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
already_AddRefed<TransactionItem> TransactionStack::GetItem(int32_t aIndex) {
|
2016-03-08 01:12:07 +00:00
|
|
|
if (aIndex < 0 || aIndex >= static_cast<int32_t>(nsDeque::GetSize())) {
|
2013-04-28 11:33:45 +00:00
|
|
|
return nullptr;
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
2018-03-22 14:07:36 +00:00
|
|
|
RefPtr<TransactionItem> item =
|
|
|
|
static_cast<TransactionItem*>(nsDeque::ObjectAt(aIndex));
|
2016-03-08 01:12:07 +00:00
|
|
|
return item.forget();
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
void TransactionStack::Clear() {
|
2016-03-08 01:12:07 +00:00
|
|
|
while (GetSize() != 0) {
|
|
|
|
RefPtr<TransactionItem> item = mType == FOR_UNDO ? Pop() : PopBottom();
|
2016-01-22 15:58:49 +00:00
|
|
|
}
|
1998-11-24 00:43:31 +00:00
|
|
|
}
|
|
|
|
|
2018-03-22 14:30:48 +00:00
|
|
|
void TransactionStack::DoTraverse(nsCycleCollectionTraversalCallback& cb) {
|
2018-03-22 14:07:36 +00:00
|
|
|
size_t size = GetSize();
|
|
|
|
for (size_t i = 0; i < size; ++i) {
|
|
|
|
TransactionItem* item = static_cast<TransactionItem*>(nsDeque::ObjectAt(i));
|
2009-05-09 04:59:25 +00:00
|
|
|
if (item) {
|
2013-04-28 11:33:45 +00:00
|
|
|
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "transaction stack mDeque[i]");
|
2018-03-22 14:07:36 +00:00
|
|
|
cb.NoteNativeChild(item,
|
|
|
|
NS_CYCLE_COLLECTION_PARTICIPANT(TransactionItem));
|
2009-05-09 04:59:25 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2018-03-22 14:30:48 +00:00
|
|
|
|
|
|
|
} // namespace mozilla
|