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-rw-r--r--editor/libeditor/InsertNodeTransaction.cpp171
1 files changed, 171 insertions, 0 deletions
diff --git a/editor/libeditor/InsertNodeTransaction.cpp b/editor/libeditor/InsertNodeTransaction.cpp
new file mode 100644
index 0000000000..aa853e3908
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+++ b/editor/libeditor/InsertNodeTransaction.cpp
@@ -0,0 +1,171 @@
+/* -*- 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/EditorDOMPoint.h" // for EditorDOMPoint
+#include "mozilla/HTMLEditor.h" // for HTMLEditor
+#include "mozilla/TextEditor.h" // for TextEditor
+
+#include "mozilla/dom/Selection.h" // for Selection
+
+#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 "nsMemory.h" // for nsMemory
+#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),
+ mEditorBase(&aEditorBase) {
+ MOZ_ASSERT(mPointToInsert.IsSetAndValid());
+ // Ensure mPointToInsert stores child at offset.
+ Unused << mPointToInsert.GetChild();
+}
+
+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() {
+ if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mContentToInsert) ||
+ NS_WARN_IF(!mPointToInsert.IsSet())) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ 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");
+ }
+
+ ErrorResult 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();
+ }
+
+ if (!editorBase->AsHTMLEditor() && contentToInsert->IsText()) {
+ uint32_t length = contentToInsert->AsText()->TextLength();
+ if (length > 0) {
+ nsresult rv = MOZ_KnownLive(editorBase->AsTextEditor())
+ ->DidInsertText(length, 0, length);
+ if (NS_FAILED(rv)) {
+ NS_WARNING("TextEditor::DidInsertText() failed");
+ return rv;
+ }
+ }
+ }
+
+ if (!mEditorBase->AllowsTransactionsToChangeSelection()) {
+ return NS_OK;
+ }
+
+ RefPtr<Selection> selection = mEditorBase->GetSelection();
+ if (NS_WARN_IF(!selection)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ // Place the selection just after the inserted element.
+ EditorRawDOMPoint afterInsertedNode(
+ EditorRawDOMPoint::After(contentToInsert));
+ NS_WARNING_ASSERTION(afterInsertedNode.IsSet(),
+ "Failed to set after the inserted node");
+ IgnoredErrorResult ignoredError;
+ selection->CollapseInLimiter(afterInsertedNode, ignoredError);
+ NS_WARNING_ASSERTION(!ignoredError.Failed(),
+ "Selection::CollapseInLimiter() failed, but ignored");
+ return NS_OK;
+}
+
+NS_IMETHODIMP InsertNodeTransaction::UndoTransaction() {
+ if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mContentToInsert) ||
+ NS_WARN_IF(!mPointToInsert.IsSet())) {
+ return NS_ERROR_NOT_INITIALIZED;
+ }
+ if (!mEditorBase->AsHTMLEditor() && mContentToInsert->IsText()) {
+ uint32_t length = mContentToInsert->TextLength();
+ if (length > 0) {
+ mEditorBase->AsTextEditor()->WillDeleteText(length, 0, length);
+ }
+ }
+ // 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("nsINode::RemoveChild() failed");
+ return error.StealNSResult();
+}
+
+} // namespace mozilla