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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 "ReplaceTextTransaction.h"
#include "HTMLEditUtils.h"
#include "mozilla/Logging.h"
#include "mozilla/OwningNonNull.h"
#include "mozilla/ToString.h"
namespace mozilla {
using namespace dom;
std::ostream& operator<<(std::ostream& aStream,
const ReplaceTextTransaction& aTransaction) {
aStream << "{ mTextNode=" << aTransaction.mTextNode.get();
if (aTransaction.mTextNode) {
aStream << " (" << *aTransaction.mTextNode << ")";
}
aStream << ", mStringToInsert=\""
<< NS_ConvertUTF16toUTF8(aTransaction.mStringToInsert).get() << "\""
<< ", mStringToBeReplaced=\""
<< NS_ConvertUTF16toUTF8(aTransaction.mStringToBeReplaced).get()
<< "\", mOffset=" << aTransaction.mOffset
<< ", mEditorBase=" << aTransaction.mEditorBase.get() << " }";
return aStream;
}
NS_IMPL_CYCLE_COLLECTION_INHERITED(ReplaceTextTransaction, EditTransactionBase,
mEditorBase, mTextNode)
NS_IMPL_ADDREF_INHERITED(ReplaceTextTransaction, EditTransactionBase)
NS_IMPL_RELEASE_INHERITED(ReplaceTextTransaction, EditTransactionBase)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ReplaceTextTransaction)
NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
NS_IMETHODIMP ReplaceTextTransaction::DoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p ReplaceTextTransaction::%s this=%s", this, __FUNCTION__,
ToString(*this).c_str()));
if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode) ||
NS_WARN_IF(!HTMLEditUtils::IsSimplyEditableNode(*mTextNode))) {
return NS_ERROR_NOT_AVAILABLE;
}
OwningNonNull<EditorBase> editorBase = *mEditorBase;
OwningNonNull<Text> textNode = *mTextNode;
ErrorResult error;
editorBase->DoReplaceText(textNode, mOffset, mStringToBeReplaced.Length(),
mStringToInsert, error);
if (error.Failed()) {
NS_WARNING("EditorBase::DoReplaceText() failed");
return error.StealNSResult();
}
// XXX What should we do if mutation event listener changed the node?
editorBase->RangeUpdaterRef().SelAdjReplaceText(textNode, mOffset,
mStringToBeReplaced.Length(),
mStringToInsert.Length());
if (!editorBase->AllowsTransactionsToChangeSelection()) {
return NS_OK;
}
// XXX Should we stop setting selection when mutation event listener
// modifies the text node?
RefPtr<Selection> selection = editorBase->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
DebugOnly<nsresult> rvIgnored = selection->CollapseInLimiter(
textNode, mOffset + mStringToInsert.Length());
if (NS_WARN_IF(editorBase->Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_ASSERTION(NS_SUCCEEDED(rvIgnored),
"Selection::CollapseInLimiter() failed, but ignored");
return NS_OK;
}
NS_IMETHODIMP ReplaceTextTransaction::UndoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p ReplaceTextTransaction::%s this=%s", this, __FUNCTION__,
ToString(*this).c_str()));
if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode) ||
NS_WARN_IF(!HTMLEditUtils::IsSimplyEditableNode(*mTextNode))) {
return NS_ERROR_NOT_AVAILABLE;
}
ErrorResult error;
nsAutoString insertedString;
mTextNode->SubstringData(mOffset, mStringToInsert.Length(), insertedString,
error);
if (error.Failed()) {
NS_WARNING("CharacterData::SubstringData() failed");
return error.StealNSResult();
}
if (insertedString != mStringToInsert) {
NS_WARNING(
"ReplaceTextTransaction::UndoTransaction() did nothing due to "
"unexpected text");
return NS_OK;
}
OwningNonNull<EditorBase> editorBase = *mEditorBase;
OwningNonNull<Text> textNode = *mTextNode;
editorBase->DoReplaceText(textNode, mOffset, mStringToInsert.Length(),
mStringToBeReplaced, error);
if (error.Failed()) {
NS_WARNING("EditorBase::DoReplaceText() failed");
return error.StealNSResult();
}
// XXX What should we do if mutation event listener changed the node?
editorBase->RangeUpdaterRef().SelAdjReplaceText(textNode, mOffset,
mStringToInsert.Length(),
mStringToBeReplaced.Length());
if (!editorBase->AllowsTransactionsToChangeSelection()) {
return NS_OK;
}
// XXX Should we stop setting selection when mutation event listener
// modifies the text node?
RefPtr<Selection> selection = editorBase->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
DebugOnly<nsresult> rvIgnored = selection->CollapseInLimiter(
textNode, mOffset + mStringToBeReplaced.Length());
if (NS_WARN_IF(editorBase->Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_ASSERTION(NS_SUCCEEDED(rvIgnored),
"Selection::CollapseInLimiter() failed, but ignored");
return NS_OK;
}
NS_IMETHODIMP ReplaceTextTransaction::RedoTransaction() {
MOZ_LOG(GetLogModule(), LogLevel::Info,
("%p ReplaceTextTransaction::%s this=%s", this, __FUNCTION__,
ToString(*this).c_str()));
if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode) ||
NS_WARN_IF(!HTMLEditUtils::IsSimplyEditableNode(*mTextNode))) {
return NS_ERROR_NOT_AVAILABLE;
}
ErrorResult error;
nsAutoString undoneString;
mTextNode->SubstringData(mOffset, mStringToBeReplaced.Length(), undoneString,
error);
if (error.Failed()) {
NS_WARNING("CharacterData::SubstringData() failed");
return error.StealNSResult();
}
if (undoneString != mStringToBeReplaced) {
NS_WARNING(
"ReplaceTextTransaction::RedoTransaction() did nothing due to "
"unexpected text");
return NS_OK;
}
OwningNonNull<EditorBase> editorBase = *mEditorBase;
OwningNonNull<Text> textNode = *mTextNode;
editorBase->DoReplaceText(textNode, mOffset, mStringToBeReplaced.Length(),
mStringToInsert, error);
if (error.Failed()) {
NS_WARNING("EditorBase::DoReplaceText() failed");
return error.StealNSResult();
}
// XXX What should we do if mutation event listener changed the node?
editorBase->RangeUpdaterRef().SelAdjReplaceText(textNode, mOffset,
mStringToBeReplaced.Length(),
mStringToInsert.Length());
if (!editorBase->AllowsTransactionsToChangeSelection()) {
return NS_OK;
}
// XXX Should we stop setting selection when mutation event listener
// modifies the text node?
RefPtr<Selection> selection = editorBase->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
DebugOnly<nsresult> rvIgnored = selection->CollapseInLimiter(
textNode, mOffset + mStringToInsert.Length());
if (NS_WARN_IF(editorBase->Destroyed())) {
return NS_ERROR_EDITOR_DESTROYED;
}
NS_ASSERTION(NS_SUCCEEDED(rvIgnored),
"Selection::CollapseInLimiter() failed, but ignored");
return NS_OK;
}
} // namespace mozilla