1 files changed, 184 insertions, 0 deletions
diff --git a/editor/libeditor/InsertNodeTransaction.cpp b/editor/libeditor/InsertNodeTransaction.cpp
new file mode 100644
index 0000000000..50e6b32653
--- /dev/null
+++ b/editor/libeditor/InsertNodeTransaction.cpp
@@ -0,0 +1,184 @@
+/* -*- 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 "InsertNodeTransaction.h"
+
+#include "EditorBase.h"      // for EditorBase
+#include "EditorDOMPoint.h"  // for EditorDOMPoint
+#include "HTMLEditor.h"      // for HTMLEditor
+#include "TextEditor.h"      // for TextEditor
+
+#include "mozilla/Logging.h"
+#include "mozilla/ToString.h"
+
+#include "nsAString.h"
+#include "nsDebug.h"          // for NS_WARNING, etc.
+#include "nsError.h"          // for NS_ERROR_NULL_POINTER, etc.
+#include "nsIContent.h"       // for nsIContent
+#include "nsReadableUtils.h"  // for ToNewCString
+#include "nsString.h"         // for nsString
+
+namespace mozilla {
+
+using namespace dom;
+
+template already_AddRefed<InsertNodeTransaction> InsertNodeTransaction::Create(
+    EditorBase& aEditorBase, nsIContent& aContentToInsert,
+    const EditorDOMPoint& aPointToInsert);
+template already_AddRefed<InsertNodeTransaction> InsertNodeTransaction::Create(
+    EditorBase& aEditorBase, nsIContent& aContentToInsert,
+    const EditorRawDOMPoint& aPointToInsert);
+
+// static
+template <typename PT, typename CT>
+already_AddRefed<InsertNodeTransaction> InsertNodeTransaction::Create(
+    EditorBase& aEditorBase, nsIContent& aContentToInsert,
+    const EditorDOMPointBase<PT, CT>& aPointToInsert) {
+  RefPtr<InsertNodeTransaction> transaction =
+      new InsertNodeTransaction(aEditorBase, aContentToInsert, aPointToInsert);
+  return transaction.forget();
+}
+
+template <typename PT, typename CT>
+InsertNodeTransaction::InsertNodeTransaction(
+    EditorBase& aEditorBase, nsIContent& aContentToInsert,
+    const EditorDOMPointBase<PT, CT>& aPointToInsert)
+    : mContentToInsert(&aContentToInsert),
+      mPointToInsert(aPointToInsert.template To<EditorDOMPoint>()),
+      mEditorBase(&aEditorBase) {
+  MOZ_ASSERT(mPointToInsert.IsSetAndValid());
+  // Ensure mPointToInsert stores child at offset.
+  Unused << mPointToInsert.GetChild();
+}
+
+std::ostream& operator<<(std::ostream& aStream,
+                         const InsertNodeTransaction& aTransaction) {
+  aStream << "{ mContentToInsert=" << aTransaction.mContentToInsert.get();
+  if (aTransaction.mContentToInsert) {
+    if (aTransaction.mContentToInsert->IsText()) {
+      nsAutoString data;
+      aTransaction.mContentToInsert->AsText()->GetData(data);
+      aStream << " (#text \"" << NS_ConvertUTF16toUTF8(data).get() << "\")";
+    } else {
+      aStream << " (" << *aTransaction.mContentToInsert << ")";
+    }
+  }
+  aStream << ", mPointToInsert=" << aTransaction.mPointToInsert
+          << ", mEditorBase=" << aTransaction.mEditorBase.get() << " }";
+  return aStream;
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(InsertNodeTransaction, EditTransactionBase,
+                                   mEditorBase, mContentToInsert,
+                                   mPointToInsert)
+
+NS_IMPL_ADDREF_INHERITED(InsertNodeTransaction, EditTransactionBase)
+NS_IMPL_RELEASE_INHERITED(InsertNodeTransaction, EditTransactionBase)
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(InsertNodeTransaction)
+NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
+
+NS_IMETHODIMP InsertNodeTransaction::DoTransaction() {
+  MOZ_LOG(GetLogModule(), LogLevel::Info,
+          ("%p InsertNodeTransaction::%s this=%s", this, __FUNCTION__,
+           ToString(*this).c_str()));
+
+  if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mContentToInsert) ||
+      NS_WARN_IF(!mPointToInsert.IsSet())) {
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+
+  MOZ_ASSERT_IF(mEditorBase->IsTextEditor(), !mContentToInsert->IsText());
+
+  if (!mPointToInsert.IsSetAndValid()) {
+    // It seems that DOM tree has been changed after first DoTransaction()
+    // and current RedoTranaction() call.
+    if (mPointToInsert.GetChild()) {
+      EditorDOMPoint newPointToInsert(mPointToInsert.GetChild());
+      if (!newPointToInsert.IsSet()) {
+        // The insertion point has been removed from the DOM tree.
+        // In this case, we should append the node to the container instead.
+        newPointToInsert.SetToEndOf(mPointToInsert.GetContainer());
+        if (NS_WARN_IF(!newPointToInsert.IsSet())) {
+          return NS_ERROR_FAILURE;
+        }
+      }
+      mPointToInsert = newPointToInsert;
+    } else {
+      mPointToInsert.SetToEndOf(mPointToInsert.GetContainer());
+      if (NS_WARN_IF(!mPointToInsert.IsSet())) {
+        return NS_ERROR_FAILURE;
+      }
+    }
+  }
+
+  OwningNonNull<EditorBase> editorBase = *mEditorBase;
+  OwningNonNull<nsIContent> contentToInsert = *mContentToInsert;
+  OwningNonNull<nsINode> container = *mPointToInsert.GetContainer();
+  nsCOMPtr<nsIContent> refChild = mPointToInsert.GetChild();
+  if (contentToInsert->IsElement()) {
+    nsresult rv = editorBase->MarkElementDirty(
+        MOZ_KnownLive(*contentToInsert->AsElement()));
+    if (NS_WARN_IF(rv == NS_ERROR_EDITOR_DESTROYED)) {
+      return EditorBase::ToGenericNSResult(rv);
+    }
+    NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
+                         "EditorBase::MarkElementDirty() failed, but ignored");
+  }
+
+  IgnoredErrorResult error;
+  container->InsertBefore(contentToInsert, refChild, error);
+  // InsertBefore() may call MightThrowJSException() even if there is no
+  // error. We don't need the flag here.
+  error.WouldReportJSException();
+  if (error.Failed()) {
+    NS_WARNING("nsINode::InsertBefore() failed");
+    return error.StealNSResult();
+  }
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP InsertNodeTransaction::UndoTransaction() {
+  MOZ_LOG(GetLogModule(), LogLevel::Info,
+          ("%p InsertNodeTransaction::%s this=%s", this, __FUNCTION__,
+           ToString(*this).c_str()));
+
+  if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mContentToInsert) ||
+      NS_WARN_IF(!mPointToInsert.IsSet())) {
+    return NS_ERROR_NOT_INITIALIZED;
+  }
+  // XXX If the inserted node has been moved to different container node or
+  //     just removed from the DOM tree, this always fails.
+  OwningNonNull<nsINode> container = *mPointToInsert.GetContainer();
+  OwningNonNull<nsIContent> contentToInsert = *mContentToInsert;
+  ErrorResult error;
+  container->RemoveChild(contentToInsert, error);
+  NS_WARNING_ASSERTION(!error.Failed(), "nsINode::RemoveChild() failed");
+  return error.StealNSResult();
+}
+
+NS_IMETHODIMP InsertNodeTransaction::RedoTransaction() {
+  MOZ_LOG(GetLogModule(), LogLevel::Info,
+          ("%p InsertNodeTransaction::%s this=%s", this, __FUNCTION__,
+           ToString(*this).c_str()));
+  nsresult rv = DoTransaction();
+  if (MOZ_UNLIKELY(NS_FAILED(rv))) {
+    NS_WARNING("InsertNodeTransaction::RedoTransaction() failed");
+    return rv;
+  }
+
+  if (!mEditorBase->AllowsTransactionsToChangeSelection()) {
+    return NS_OK;
+  }
+
+  OwningNonNull<EditorBase> editorBase(*mEditorBase);
+  rv = editorBase->CollapseSelectionTo(
+      SuggestPointToPutCaret<EditorRawDOMPoint>());
+  NS_WARNING_ASSERTION(NS_SUCCEEDED(rv),
+                       "EditorBase::CollapseSelectionTo() failed, but ignored");
+  return NS_OK;
+}
+
+}  // namespace mozilla