зеркало из https://github.com/mozilla/gecko-dev.git
110 строки
3.3 KiB
C++
110 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=78: */
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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 "SetTextTransaction.h"
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#include "mozilla/DebugOnly.h" // DebugOnly
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#include "mozilla/EditorBase.h" // mEditorBase
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#include "mozilla/SelectionState.h" // RangeUpdater
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#include "mozilla/dom/Selection.h" // Selection local var
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#include "mozilla/dom/Text.h" // mTextNode
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#include "nsAString.h" // nsAString parameter
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#include "nsDebug.h" // for NS_ASSERTION, etc.
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#include "nsError.h" // for NS_OK, etc.
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#include "nsQueryObject.h" // for do_QueryObject
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namespace mozilla {
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using namespace dom;
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SetTextTransaction::SetTextTransaction(Text& aTextNode,
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const nsAString& aStringToSet,
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EditorBase& aEditorBase,
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RangeUpdater* aRangeUpdater)
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: mTextNode(&aTextNode)
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, mStringToSet(aStringToSet)
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, mEditorBase(&aEditorBase)
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, mRangeUpdater(aRangeUpdater)
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{
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}
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SetTextTransaction::~SetTextTransaction()
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(SetTextTransaction, EditTransactionBase,
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mEditorBase,
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mTextNode)
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NS_IMPL_ADDREF_INHERITED(SetTextTransaction, EditTransactionBase)
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NS_IMPL_RELEASE_INHERITED(SetTextTransaction, EditTransactionBase)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(SetTextTransaction)
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if (aIID.Equals(NS_GET_IID(SetTextTransaction))) {
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foundInterface = static_cast<nsITransaction*>(this);
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} else
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NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
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NS_IMETHODIMP
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SetTextTransaction::DoTransaction()
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{
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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mTextNode)) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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nsresult rv = mTextNode->GetData(mPreviousData);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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rv = mTextNode->SetData(mStringToSet);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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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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RefPtr<Selection> selection = mEditorBase->GetSelection();
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return NS_ERROR_NULL_POINTER;
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}
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DebugOnly<nsresult> rv =
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selection->Collapse(mTextNode, mStringToSet.Length());
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NS_ASSERTION(NS_SUCCEEDED(rv),
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"Selection could not be collapsed after insert");
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}
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mRangeUpdater->SelAdjDeleteText(mTextNode, 0, mPreviousData.Length());
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mRangeUpdater->SelAdjInsertText(*mTextNode, 0, mStringToSet);
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return NS_OK;
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}
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NS_IMETHODIMP
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SetTextTransaction::UndoTransaction()
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{
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return mTextNode->SetData(mPreviousData);
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}
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NS_IMETHODIMP
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SetTextTransaction::Merge(nsITransaction* aTransaction,
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bool* aDidMerge)
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{
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// Set out param default value
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*aDidMerge = false;
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return NS_OK;
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}
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NS_IMETHODIMP
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SetTextTransaction::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("SetTextTransaction: ");
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aString += mStringToSet;
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return NS_OK;
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}
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} // namespace mozilla
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