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-rw-r--r--editor/libeditor/ReplaceTextTransaction.h95
1 files changed, 95 insertions, 0 deletions
diff --git a/editor/libeditor/ReplaceTextTransaction.h b/editor/libeditor/ReplaceTextTransaction.h
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+++ b/editor/libeditor/ReplaceTextTransaction.h
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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 "EditorBase.h"
+#include "EditorDOMPoint.h"
+#include "EditorForwards.h"
+#include "EditTransactionBase.h"
+
+#include "mozilla/Attributes.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/Text.h"
+#include "nsDebug.h"
+#include "nsString.h"
+
+namespace mozilla {
+
+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;
+
+ template <typename EditorDOMPointType>
+ EditorDOMPointType SuggestPointToPutCaret() const {
+ if (NS_WARN_IF(!mTextNode)) {
+ return EditorDOMPointType();
+ }
+ return EditorDOMPointType(mTextNode, mOffset + mStringToInsert.Length());
+ }
+
+ 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_