1 files changed, 186 insertions, 0 deletions
diff --git a/editor/libeditor/ReplaceTextTransaction.cpp b/editor/libeditor/ReplaceTextTransaction.cpp
new file mode 100644
index 0000000000..6887fc6011
--- /dev/null
+++ b/editor/libeditor/ReplaceTextTransaction.cpp
@@ -0,0 +1,186 @@
+/* -*- 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 (MOZ_UNLIKELY(
+          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;
+
+  IgnoredErrorResult error;
+  editorBase->DoReplaceText(textNode, mOffset, mStringToBeReplaced.Length(),
+                            mStringToInsert, error);
+  if (MOZ_UNLIKELY(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());
+  return NS_OK;
+}
+
+NS_IMETHODIMP ReplaceTextTransaction::UndoTransaction() {
+  MOZ_LOG(GetLogModule(), LogLevel::Info,
+          ("%p ReplaceTextTransaction::%s this=%s", this, __FUNCTION__,
+           ToString(*this).c_str()));
+
+  if (MOZ_UNLIKELY(
+          NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode) ||
+          NS_WARN_IF(!HTMLEditUtils::IsSimplyEditableNode(*mTextNode)))) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  IgnoredErrorResult error;
+  nsAutoString insertedString;
+  mTextNode->SubstringData(mOffset, mStringToInsert.Length(), insertedString,
+                           error);
+  if (MOZ_UNLIKELY(error.Failed())) {
+    NS_WARNING("CharacterData::SubstringData() failed");
+    return error.StealNSResult();
+  }
+  if (MOZ_UNLIKELY(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 (MOZ_UNLIKELY(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?
+  editorBase->CollapseSelectionTo(
+      EditorRawDOMPoint(textNode, mOffset + mStringToBeReplaced.Length()),
+      error);
+  if (MOZ_UNLIKELY(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
+    NS_WARNING(
+        "EditorBase::CollapseSelectionTo() caused destroying the editor");
+    return NS_ERROR_EDITOR_DESTROYED;
+  }
+  NS_ASSERTION(!error.Failed(),
+               "EditorBase::CollapseSelectionTo() 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 (MOZ_UNLIKELY(
+          NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode) ||
+          NS_WARN_IF(!HTMLEditUtils::IsSimplyEditableNode(*mTextNode)))) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  IgnoredErrorResult error;
+  nsAutoString undoneString;
+  mTextNode->SubstringData(mOffset, mStringToBeReplaced.Length(), undoneString,
+                           error);
+  if (MOZ_UNLIKELY(error.Failed())) {
+    NS_WARNING("CharacterData::SubstringData() failed");
+    return error.StealNSResult();
+  }
+  if (MOZ_UNLIKELY(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 (MOZ_UNLIKELY(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?
+  editorBase->CollapseSelectionTo(SuggestPointToPutCaret<EditorRawDOMPoint>(),
+                                  error);
+  if (MOZ_UNLIKELY(error.ErrorCodeIs(NS_ERROR_EDITOR_DESTROYED))) {
+    NS_WARNING(
+        "EditorBase::CollapseSelectionTo() caused destroying the editor");
+    return NS_ERROR_EDITOR_DESTROYED;
+  }
+  NS_ASSERTION(!error.Failed(),
+               "EditorBase::CollapseSelectionTo() failed, but ignored");
+  return NS_OK;
+}
+
+}  // namespace mozilla