зеркало из https://github.com/mozilla/gecko-dev.git
132 строки
3.6 KiB
C++
132 строки
3.6 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 "StyleSheetTransactions.h"
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#include <stddef.h> // for nullptr
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#include "nsAString.h"
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#include "nsCOMPtr.h" // for nsCOMPtr, do_QueryInterface, etc.
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#include "mozilla/StyleSheet.h" // for mozilla::StyleSheet
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#include "mozilla/StyleSheetInlines.h"
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#include "nsDebug.h" // for NS_ENSURE_TRUE
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#include "nsError.h" // for NS_OK, etc.
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#include "nsIDocument.h" // for nsIDocument
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#include "nsIDocumentObserver.h" // for UPDATE_STYLE
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namespace mozilla {
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static void
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AddStyleSheet(EditorBase& aEditor, StyleSheet* aSheet)
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{
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nsCOMPtr<nsIDocument> doc = aEditor.GetDocument();
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if (doc) {
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doc->BeginUpdate(UPDATE_STYLE);
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doc->AddStyleSheet(aSheet);
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doc->EndUpdate(UPDATE_STYLE);
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}
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}
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static void
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RemoveStyleSheet(EditorBase& aEditor, StyleSheet* aSheet)
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{
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nsCOMPtr<nsIDocument> doc = aEditor.GetDocument();
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if (doc) {
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doc->BeginUpdate(UPDATE_STYLE);
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doc->RemoveStyleSheet(aSheet);
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doc->EndUpdate(UPDATE_STYLE);
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}
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}
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/******************************************************************************
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* AddStyleSheetTransaction
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******************************************************************************/
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AddStyleSheetTransaction::AddStyleSheetTransaction(EditorBase& aEditor,
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StyleSheet* aSheet)
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: mEditor(aEditor)
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, mSheet(aSheet)
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{
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MOZ_ASSERT(aSheet);
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(AddStyleSheetTransaction,
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EditTransactionBase,
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mSheet)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AddStyleSheetTransaction)
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NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
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NS_IMETHODIMP
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AddStyleSheetTransaction::DoTransaction()
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{
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NS_ENSURE_TRUE(mSheet, NS_ERROR_NOT_INITIALIZED);
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AddStyleSheet(mEditor, mSheet);
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return NS_OK;
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}
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NS_IMETHODIMP
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AddStyleSheetTransaction::UndoTransaction()
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{
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NS_ENSURE_TRUE(mSheet, NS_ERROR_NOT_INITIALIZED);
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RemoveStyleSheet(mEditor, mSheet);
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return NS_OK;
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}
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NS_IMETHODIMP
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AddStyleSheetTransaction::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("AddStyleSheetTransaction");
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return NS_OK;
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}
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/******************************************************************************
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* RemoveStyleSheetTransaction
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******************************************************************************/
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RemoveStyleSheetTransaction::RemoveStyleSheetTransaction(EditorBase& aEditor,
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StyleSheet* aSheet)
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: mEditor(aEditor)
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, mSheet(aSheet)
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{
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MOZ_ASSERT(aSheet);
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(RemoveStyleSheetTransaction,
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EditTransactionBase,
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mSheet)
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(RemoveStyleSheetTransaction)
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NS_INTERFACE_MAP_END_INHERITING(EditTransactionBase)
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NS_IMETHODIMP
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RemoveStyleSheetTransaction::DoTransaction()
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{
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NS_ENSURE_TRUE(mSheet, NS_ERROR_NOT_INITIALIZED);
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RemoveStyleSheet(mEditor, mSheet);
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return NS_OK;
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}
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NS_IMETHODIMP
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RemoveStyleSheetTransaction::UndoTransaction()
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{
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NS_ENSURE_TRUE(mSheet, NS_ERROR_NOT_INITIALIZED);
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AddStyleSheet(mEditor, mSheet);
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return NS_OK;
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}
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NS_IMETHODIMP
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RemoveStyleSheetTransaction::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("RemoveStyleSheetTransaction");
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return NS_OK;
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}
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} // namespace mozilla
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