1 files changed, 97 insertions, 0 deletions
diff --git a/editor/libeditor/InsertNodeTransaction.cpp b/editor/libeditor/InsertNodeTransaction.cpp
new file mode 100644
index 000000000..6af33b74f
--- /dev/null
+++ b/editor/libeditor/InsertNodeTransaction.cpp
@@ -0,0 +1,97 @@
+/* -*- 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 "mozilla/EditorBase.h"         // for EditorBase
+
+#include "mozilla/dom/Selection.h"      // for Selection
+
+#include "nsAString.h"
+#include "nsDebug.h"                    // for NS_ENSURE_TRUE, etc.
+#include "nsError.h"                    // for NS_ERROR_NULL_POINTER, etc.
+#include "nsIContent.h"                 // for nsIContent
+#include "nsMemory.h"                   // for nsMemory
+#include "nsReadableUtils.h"            // for ToNewCString
+#include "nsString.h"                   // for nsString
+
+namespace mozilla {
+
+using namespace dom;
+
+InsertNodeTransaction::InsertNodeTransaction(nsIContent& aNode,
+                                             nsINode& aParent,
+                                             int32_t aOffset,
+                                             EditorBase& aEditorBase)
+  : mNode(&aNode)
+  , mParent(&aParent)
+  , mOffset(aOffset)
+  , mEditorBase(aEditorBase)
+{
+}
+
+InsertNodeTransaction::~InsertNodeTransaction()
+{
+}
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(InsertNodeTransaction, EditTransactionBase,
+                                   mNode,
+                                   mParent)
+
+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_ASSERT(mNode && mParent);
+
+  uint32_t count = mParent->GetChildCount();
+  if (mOffset > static_cast<int32_t>(count) || mOffset == -1) {
+    // -1 is sentinel value meaning "append at end"
+    mOffset = count;
+  }
+
+  // Note, it's ok for ref to be null. That means append.
+  nsCOMPtr<nsIContent> ref = mParent->GetChildAt(mOffset);
+
+  mEditorBase.MarkNodeDirty(GetAsDOMNode(mNode));
+
+  ErrorResult rv;
+  mParent->InsertBefore(*mNode, ref, rv);
+  NS_ENSURE_TRUE(!rv.Failed(), rv.StealNSResult());
+
+  // Only set selection to insertion point if editor gives permission
+  if (mEditorBase.GetShouldTxnSetSelection()) {
+    RefPtr<Selection> selection = mEditorBase.GetSelection();
+    NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
+    // Place the selection just after the inserted element
+    selection->Collapse(mParent, mOffset + 1);
+  } else {
+    // Do nothing - DOM Range gravity will adjust selection
+  }
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+InsertNodeTransaction::UndoTransaction()
+{
+  MOZ_ASSERT(mNode && mParent);
+
+  ErrorResult rv;
+  mParent->RemoveChild(*mNode, rv);
+  return rv.StealNSResult();
+}
+
+NS_IMETHODIMP
+InsertNodeTransaction::GetTxnDescription(nsAString& aString)
+{
+  aString.AssignLiteral("InsertNodeTransaction");
+  return NS_OK;
+}
+
+} // namespace mozilla