зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
4.6 KiB
C++
138 строки
4.6 KiB
C++
/* -*- 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/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(
|
|
EditorBase& aEditorBase,
|
|
nsIContent& aContentToInsert,
|
|
const EditorRawDOMPoint& aPointToInsert)
|
|
: mContentToInsert(&aContentToInsert)
|
|
, mPointToInsert(aPointToInsert)
|
|
, mEditorBase(&aEditorBase)
|
|
{
|
|
MOZ_ASSERT(mPointToInsert.IsSetAndValid());
|
|
// Ensure mPointToInsert stores child at offset.
|
|
Unused << mPointToInsert.GetChild();
|
|
}
|
|
|
|
InsertNodeTransaction::~InsertNodeTransaction()
|
|
{
|
|
}
|
|
|
|
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_INITIALIZED;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
mEditorBase->MarkNodeDirty(GetAsDOMNode(mContentToInsert));
|
|
|
|
ErrorResult error;
|
|
mPointToInsert.GetContainer()->InsertBefore(*mContentToInsert,
|
|
mPointToInsert.GetChild(),
|
|
error);
|
|
error.WouldReportJSException();
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
|
|
// Only set selection to insertion point if editor gives permission
|
|
if (mEditorBase->GetShouldTxnSetSelection()) {
|
|
RefPtr<Selection> selection = mEditorBase->GetSelection();
|
|
if (NS_WARN_IF(!selection)) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
// Place the selection just after the inserted element
|
|
EditorRawDOMPoint afterInsertedNode(mContentToInsert);
|
|
DebugOnly<bool> advanced = afterInsertedNode.AdvanceOffset();
|
|
NS_WARNING_ASSERTION(advanced,
|
|
"Failed to advance offset after the inserted node");
|
|
selection->Collapse(afterInsertedNode, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
error.SuppressException();
|
|
}
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
InsertNodeTransaction::UndoTransaction()
|
|
{
|
|
if (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.
|
|
ErrorResult error;
|
|
mPointToInsert.GetContainer()->RemoveChild(*mContentToInsert, error);
|
|
if (NS_WARN_IF(error.Failed())) {
|
|
return error.StealNSResult();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
InsertNodeTransaction::GetTxnDescription(nsAString& aString)
|
|
{
|
|
aString.AssignLiteral("InsertNodeTransaction");
|
|
return NS_OK;
|
|
}
|
|
|
|
} // namespace mozilla
|