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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "EditAggregateTransaction.h"
#include "mozilla/Logging.h"
#include "mozilla/ReverseIterator.h" // for Reversed
#include "nsAString.h"
#include "nsAtom.h"
#include "nsCOMPtr.h" // for nsCOMPtr
#include "nsError.h" // for NS_OK, etc.
#include "nsGkAtoms.h"
#include "nsISupportsUtils.h" // for NS_ADDREF
#include "nsString.h" // for nsAutoString
namespace mozilla {
NS_IMPL_CYCLE_COLLECTION_INHERITED(EditAggregateTransaction,
EditTransactionBase, mChildren)
NS_IMPL_ADDREF_INHERITED(EditAggregateTransaction, EditTransactionBase)
NS_IMPL_RELEASE_INHERITED(EditAggregateTransaction, EditTransactionBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(EditAggregateTransaction)
NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
NS_IMETHODIMP EditAggregateTransaction::DoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s, mChildren=%zu } "
"Start==============================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get(),
mChildren.Length()));
// FYI: It's legal (but not very useful) to have an empty child list.
for (const OwningNonNull<EditTransactionBase>& childTransaction :
CopyableAutoTArray<OwningNonNull<EditTransactionBase>, 10>(mChildren)) {
nsresult rv = MOZ_KnownLive(childTransaction)->DoTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("EditTransactionBase::DoTransaction() failed");
return rv;
}
}
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s } "
"End================================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get()));
return NS_OK;
}
NS_IMETHODIMP EditAggregateTransaction::UndoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s, mChildren=%zu } "
"Start==============================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get(),
mChildren.Length()));
// FYI: It's legal (but not very useful) to have an empty child list.
// Undo goes through children backwards.
const CopyableAutoTArray<OwningNonNull<EditTransactionBase>, 10> children(
mChildren);
for (const OwningNonNull<EditTransactionBase>& childTransaction :
Reversed(children)) {
nsresult rv = MOZ_KnownLive(childTransaction)->UndoTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("EditTransactionBase::UndoTransaction() failed");
return rv;
}
}
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s } "
"End================================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get()));
return NS_OK;
}
NS_IMETHODIMP EditAggregateTransaction::RedoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s, mChildren=%zu } "
"Start==============================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get(),
mChildren.Length()));
// It's legal (but not very useful) to have an empty child list.
const CopyableAutoTArray<OwningNonNull<EditTransactionBase>, 10> children(
mChildren);
for (const OwningNonNull<EditTransactionBase>& childTransaction : children) {
nsresult rv = MOZ_KnownLive(childTransaction)->RedoTransaction();
if (NS_FAILED(rv)) {
NS_WARNING("EditTransactionBase::RedoTransaction() failed");
return rv;
}
}
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p EditAggregateTransaction::%s this={ mName=%s } "
"End================================",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get()));
return NS_OK;
}
NS_IMETHODIMP EditAggregateTransaction::Merge(nsITransaction* aOtherTransaction,
bool* aDidMerge) {
if (aDidMerge) {
*aDidMerge = false;
}
if (mChildren.IsEmpty()) {
MOZ_LOG(GetLogModule(), LogLevel::Debug,
("%p EditAggregateTransaction::%s this={ mName=%s } returned false "
"due to no children",
this, __FUNCTION__,
nsAtomCString(mName ? mName.get() : nsGkAtoms::_empty).get()));
return NS_OK;
}
// FIXME: Is this really intended not to loop? It looks like the code
// that used to be here sort of intended to loop, but didn't.
return mChildren[0]->Merge(aOtherTransaction, aDidMerge);
}
NS_IMETHODIMP EditAggregateTransaction::AppendChild(
EditTransactionBase* aTransaction) {
if (NS_WARN_IF(!aTransaction)) {
return NS_ERROR_INVALID_ARG;
}
mChildren.AppendElement(*aTransaction);
return NS_OK;
}
NS_IMETHODIMP EditAggregateTransaction::GetName(nsAtom** aName) {
if (NS_WARN_IF(!aName)) {
return NS_ERROR_INVALID_ARG;
}
if (NS_WARN_IF(!mName)) {
return NS_ERROR_FAILURE;
}
*aName = do_AddRef(mName).take();
return NS_OK;
}
} // namespace mozilla