mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-19 08:15:31 +00:00
265e672179
# ignore-this-changeset --HG-- extra : amend_source : 4d301d3b0b8711c4692392aa76088ba7fd7d1022
93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
/* -*- 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 "ChangeAttributeTransaction.h"
|
|
|
|
#include "mozilla/dom/Element.h" // for Element
|
|
|
|
#include "nsAString.h"
|
|
#include "nsError.h" // for NS_ERROR_NOT_INITIALIZED, etc.
|
|
|
|
namespace mozilla {
|
|
|
|
using namespace dom;
|
|
|
|
// static
|
|
already_AddRefed<ChangeAttributeTransaction> ChangeAttributeTransaction::Create(
|
|
Element& aElement, nsAtom& aAttribute, const nsAString& aValue) {
|
|
RefPtr<ChangeAttributeTransaction> transaction =
|
|
new ChangeAttributeTransaction(aElement, aAttribute, &aValue);
|
|
return transaction.forget();
|
|
}
|
|
|
|
// static
|
|
already_AddRefed<ChangeAttributeTransaction>
|
|
ChangeAttributeTransaction::CreateToRemove(Element& aElement,
|
|
nsAtom& aAttribute) {
|
|
RefPtr<ChangeAttributeTransaction> transaction =
|
|
new ChangeAttributeTransaction(aElement, aAttribute, nullptr);
|
|
return transaction.forget();
|
|
}
|
|
|
|
ChangeAttributeTransaction::ChangeAttributeTransaction(Element& aElement,
|
|
nsAtom& aAttribute,
|
|
const nsAString* aValue)
|
|
: EditTransactionBase(),
|
|
mElement(&aElement),
|
|
mAttribute(&aAttribute),
|
|
mValue(aValue ? *aValue : EmptyString()),
|
|
mRemoveAttribute(!aValue),
|
|
mAttributeWasSet(false) {}
|
|
|
|
ChangeAttributeTransaction::~ChangeAttributeTransaction() {}
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_INHERITED(ChangeAttributeTransaction,
|
|
EditTransactionBase, mElement)
|
|
|
|
NS_IMPL_ADDREF_INHERITED(ChangeAttributeTransaction, EditTransactionBase)
|
|
NS_IMPL_RELEASE_INHERITED(ChangeAttributeTransaction, EditTransactionBase)
|
|
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ChangeAttributeTransaction)
|
|
NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
|
|
|
|
NS_IMETHODIMP
|
|
ChangeAttributeTransaction::DoTransaction() {
|
|
// Need to get the current value of the attribute and save it, and set
|
|
// mAttributeWasSet
|
|
mAttributeWasSet =
|
|
mElement->GetAttr(kNameSpaceID_None, mAttribute, mUndoValue);
|
|
|
|
// XXX: hack until attribute-was-set code is implemented
|
|
if (!mUndoValue.IsEmpty()) {
|
|
mAttributeWasSet = true;
|
|
}
|
|
// XXX: end hack
|
|
|
|
// Now set the attribute to the new value
|
|
if (mRemoveAttribute) {
|
|
return mElement->UnsetAttr(kNameSpaceID_None, mAttribute, true);
|
|
}
|
|
|
|
return mElement->SetAttr(kNameSpaceID_None, mAttribute, mValue, true);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
ChangeAttributeTransaction::UndoTransaction() {
|
|
if (mAttributeWasSet) {
|
|
return mElement->SetAttr(kNameSpaceID_None, mAttribute, mUndoValue, true);
|
|
}
|
|
return mElement->UnsetAttr(kNameSpaceID_None, mAttribute, true);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
ChangeAttributeTransaction::RedoTransaction() {
|
|
if (mRemoveAttribute) {
|
|
return mElement->UnsetAttr(kNameSpaceID_None, mAttribute, true);
|
|
}
|
|
|
|
return mElement->SetAttr(kNameSpaceID_None, mAttribute, mValue, true);
|
|
}
|
|
|
|
} // namespace mozilla
|