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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/. */
#ifndef ReplaceTextTransaction_h
#define ReplaceTextTransaction_h
#include "mozilla/Attributes.h"
#include "mozilla/EditorBase.h"
#include "mozilla/EditorDOMPoint.h"
#include "mozilla/EditTransactionBase.h"
#include "mozilla/Maybe.h"
#include "mozilla/RefPtr.h"
#include "mozilla/dom/Text.h"
#include "nsDebug.h"
#include "nsString.h"
namespace mozilla {
class EditorBase;
class ReplaceTextTransaction final : public EditTransactionBase {
private:
ReplaceTextTransaction(EditorBase& aEditorBase,
const nsAString& aStringToInsert, dom::Text& aTextNode,
uint32_t aStartOffset, uint32_t aLength)
: mEditorBase(&aEditorBase),
mTextNode(&aTextNode),
mStringToInsert(aStringToInsert),
mOffset(aStartOffset) {
if (aLength) {
IgnoredErrorResult ignoredError;
mTextNode->SubstringData(mOffset, aLength, mStringToBeReplaced,
ignoredError);
NS_WARNING_ASSERTION(
!ignoredError.Failed(),
"Failed to initialize ReplaceTextTransaction::mStringToBeReplaced, "
"but ignored");
}
}
virtual ~ReplaceTextTransaction() = default;
public:
static already_AddRefed<ReplaceTextTransaction> Create(
EditorBase& aEditorBase, const nsAString& aStringToInsert,
dom::Text& aTextNode, uint32_t aStartOffset, uint32_t aLength) {
MOZ_ASSERT(aLength > 0, "Use InsertTextTransaction instead");
MOZ_ASSERT(!aStringToInsert.IsEmpty(), "Use DeleteTextTransaction instead");
MOZ_ASSERT(aTextNode.Length() >= aStartOffset);
MOZ_ASSERT(aTextNode.Length() >= aStartOffset + aLength);
RefPtr<ReplaceTextTransaction> transaction = new ReplaceTextTransaction(
aEditorBase, aStringToInsert, aTextNode, aStartOffset, aLength);
return transaction.forget();
}
ReplaceTextTransaction() = delete;
ReplaceTextTransaction(const ReplaceTextTransaction&) = delete;
ReplaceTextTransaction& operator=(const ReplaceTextTransaction&) = delete;
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ReplaceTextTransaction,
EditTransactionBase)
NS_DECL_EDITTRANSACTIONBASE
NS_DECL_EDITTRANSACTIONBASE_GETASMETHODS_OVERRIDE(ReplaceTextTransaction)
MOZ_CAN_RUN_SCRIPT NS_IMETHOD RedoTransaction() final;
friend std::ostream& operator<<(std::ostream& aStream,
const ReplaceTextTransaction& aTransaction);
private:
RefPtr<EditorBase> mEditorBase;
RefPtr<dom::Text> mTextNode;
nsString mStringToInsert;
nsString mStringToBeReplaced;
uint32_t mOffset;
};
} // namespace mozilla
#endif // #ifndef ReplaceTextTransaction_