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537b829474
A lot of methods take |const EditorRawDOMPoint&| as their argument. However, some of them are called with EditorDOMPoint::AsRaw(). This is not good for performance because: 1. Needs to create temporary instance of EditorRawDOMPoint. 2. EditorRawDOMPoint::AsRaw() may be used by simple mistake. 3. Such methods may call EditorRawDOMPoint::Offset(), however, it's not copied to the original EditorDOMPoint instance. So, callers may need to compute offset again. So, such methods should be changed to template methods if they are not virtual method and AsRaw() should be gotten rid of for prevent it looking not expensive. MozReview-Commit-ID: DAqqW4a2EMS --HG-- extra : rebase_source : 120b920477fe6e7231271411a00994325acdb842
204 lines
6.1 KiB
C++
204 lines
6.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "CreateElementTransaction.h"
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#include <algorithm>
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#include <stdio.h>
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/Casting.h"
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#include "mozilla/EditorBase.h"
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#include "mozilla/EditorDOMPoint.h"
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#include "nsAlgorithm.h"
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#include "nsAString.h"
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#include "nsDebug.h"
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#include "nsError.h"
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#include "nsIContent.h"
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#include "nsIEditor.h"
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#include "nsINode.h"
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#include "nsISupportsUtils.h"
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#include "nsMemory.h"
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#include "nsReadableUtils.h"
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#include "nsStringFwd.h"
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#include "nsString.h"
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namespace mozilla {
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using namespace dom;
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template already_AddRefed<CreateElementTransaction>
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CreateElementTransaction::Create(
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EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorDOMPoint& aPointToInsert);
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template already_AddRefed<CreateElementTransaction>
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CreateElementTransaction::Create(
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EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorRawDOMPoint& aPointToInsert);
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template<typename PT, typename CT>
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already_AddRefed<CreateElementTransaction>
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CreateElementTransaction::Create(
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EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorDOMPointBase<PT, CT>& aPointToInsert)
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{
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RefPtr<CreateElementTransaction> transaction =
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new CreateElementTransaction(aEditorBase, aTag, aPointToInsert);
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return transaction.forget();
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}
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template<typename PT, typename CT>
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CreateElementTransaction::CreateElementTransaction(
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EditorBase& aEditorBase,
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nsAtom& aTag,
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const EditorDOMPointBase<PT, CT>& aPointToInsert)
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: EditTransactionBase()
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, mEditorBase(&aEditorBase)
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, mTag(&aTag)
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, mPointToInsert(aPointToInsert)
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{
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}
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CreateElementTransaction::~CreateElementTransaction()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(CreateElementTransaction,
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EditTransactionBase,
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mEditorBase,
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mPointToInsert,
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mNewNode)
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NS_IMPL_ADDREF_INHERITED(CreateElementTransaction, EditTransactionBase)
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NS_IMPL_RELEASE_INHERITED(CreateElementTransaction, EditTransactionBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CreateElementTransaction)
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NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
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NS_IMETHODIMP
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CreateElementTransaction::DoTransaction()
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{
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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTag) ||
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NS_WARN_IF(!mPointToInsert.IsSet())) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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mNewNode = mEditorBase->CreateHTMLContent(mTag);
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NS_ENSURE_STATE(mNewNode);
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// Try to insert formatting whitespace for the new node:
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mEditorBase->MarkNodeDirty(GetAsDOMNode(mNewNode));
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// Insert the new node
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ErrorResult error;
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InsertNewNode(error);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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// Only set selection to insertion point if editor gives permission
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if (!mEditorBase->GetShouldTxnSetSelection()) {
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// Do nothing - DOM range gravity will adjust selection
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return NS_OK;
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}
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RefPtr<Selection> selection = mEditorBase->GetSelection();
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NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
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EditorRawDOMPoint afterNewNode(mNewNode);
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if (NS_WARN_IF(!afterNewNode.AdvanceOffset())) {
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// If mutation observer or mutation event listener moved or removed the
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// new node, we hit this case. Should we use script blocker while we're
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// in this method?
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return NS_ERROR_FAILURE;
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}
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selection->Collapse(afterNewNode, error);
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if (error.Failed()) {
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NS_WARNING("selection could not be collapsed after insert");
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error.SuppressException();
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}
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return NS_OK;
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}
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void
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CreateElementTransaction::InsertNewNode(ErrorResult& aError)
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{
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if (mPointToInsert.IsSetAndValid()) {
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if (mPointToInsert.IsEndOfContainer()) {
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mPointToInsert.GetContainer()->AppendChild(*mNewNode, aError);
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NS_WARNING_ASSERTION(!aError.Failed(), "Failed to append the new node");
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return;
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}
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mPointToInsert.GetContainer()->
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InsertBefore(*mNewNode,
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mPointToInsert.GetChild(),
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aError);
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NS_WARNING_ASSERTION(!aError.Failed(), "Failed to insert the new node");
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return;
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}
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if (NS_WARN_IF(mPointToInsert.GetChild() &&
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mPointToInsert.GetContainer() !=
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mPointToInsert.GetChild()->GetParentNode())) {
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aError.Throw(NS_ERROR_FAILURE);
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return;
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}
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// If mPointToInsert has only offset and it's not valid, we need to treat
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// it as pointing end of the container.
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mPointToInsert.GetContainer()->AppendChild(*mNewNode, aError);
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NS_WARNING_ASSERTION(!aError.Failed(), "Failed to append the new node");
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}
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NS_IMETHODIMP
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CreateElementTransaction::UndoTransaction()
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{
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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mPointToInsert.IsSet())) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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ErrorResult error;
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mPointToInsert.GetContainer()->RemoveChild(*mNewNode, error);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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CreateElementTransaction::RedoTransaction()
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{
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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mPointToInsert.IsSet())) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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// First, reset mNewNode so it has no attributes or content
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// XXX We never actually did this, we only cleared mNewNode's contents if it
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// was a CharacterData node (which it's not, it's an Element)
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// XXX Don't we need to set selection like DoTransaction()?
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// Now, reinsert mNewNode
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ErrorResult error;
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InsertNewNode(error);
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if (NS_WARN_IF(error.Failed())) {
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return error.StealNSResult();
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}
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return NS_OK;
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}
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already_AddRefed<Element>
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CreateElementTransaction::GetNewNode()
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{
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return nsCOMPtr<Element>(mNewNode).forget();
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}
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} // namespace mozilla
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