зеркало из https://github.com/mozilla/gecko-dev.git
160 строки
4.0 KiB
C++
160 строки
4.0 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 <stddef.h> // for NULL
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#include "nsAString.h"
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#include "nsCOMPtr.h" // for nsCOMPtr, do_QueryInterface, etc
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#include "nsCSSStyleSheet.h" // for nsCSSStyleSheet
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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 "nsIDOMDocument.h" // for nsIDOMDocument
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#include "nsIDocument.h" // for nsIDocument
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#include "nsIDocumentObserver.h" // for UPDATE_STYLE
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#include "nsIEditor.h" // for nsIEditor
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#include "nsStyleSheetTxns.h"
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class nsIStyleSheet;
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static void
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AddStyleSheet(nsIEditor* aEditor, nsIStyleSheet* aSheet)
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{
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nsCOMPtr<nsIDOMDocument> domDoc;
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aEditor->GetDocument(getter_AddRefs(domDoc));
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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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(nsIEditor *aEditor, nsIStyleSheet *aSheet)
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{
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nsCOMPtr<nsIDOMDocument> domDoc;
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aEditor->GetDocument(getter_AddRefs(domDoc));
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nsCOMPtr<nsIDocument> doc = do_QueryInterface(domDoc);
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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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AddStyleSheetTxn::AddStyleSheetTxn()
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: EditTxn()
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, mEditor(NULL)
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{
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(AddStyleSheetTxn)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(AddStyleSheetTxn, EditTxn)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mSheet)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(AddStyleSheetTxn, EditTxn)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mSheet, nsIStyleSheet)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AddStyleSheetTxn)
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NS_INTERFACE_MAP_END_INHERITING(EditTxn)
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NS_IMETHODIMP
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AddStyleSheetTxn::Init(nsIEditor *aEditor, nsCSSStyleSheet *aSheet)
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{
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NS_ENSURE_TRUE(aEditor && aSheet, NS_ERROR_INVALID_ARG);
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mEditor = aEditor;
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mSheet = aSheet;
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return NS_OK;
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}
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NS_IMETHODIMP
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AddStyleSheetTxn::DoTransaction()
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{
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NS_ENSURE_TRUE(mEditor && 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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AddStyleSheetTxn::UndoTransaction()
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{
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NS_ENSURE_TRUE(mEditor && 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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AddStyleSheetTxn::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("AddStyleSheetTxn");
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return NS_OK;
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}
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RemoveStyleSheetTxn::RemoveStyleSheetTxn()
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: EditTxn()
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, mEditor(NULL)
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{
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}
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NS_IMPL_CYCLE_COLLECTION_CLASS(RemoveStyleSheetTxn)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(RemoveStyleSheetTxn, EditTxn)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_NSCOMPTR(mSheet)
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NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(RemoveStyleSheetTxn, EditTxn)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_NSCOMPTR_AMBIGUOUS(mSheet, nsIStyleSheet)
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NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(RemoveStyleSheetTxn)
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NS_INTERFACE_MAP_END_INHERITING(EditTxn)
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NS_IMETHODIMP
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RemoveStyleSheetTxn::Init(nsIEditor *aEditor, nsCSSStyleSheet *aSheet)
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{
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NS_ENSURE_TRUE(aEditor && aSheet, NS_ERROR_INVALID_ARG);
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mEditor = aEditor;
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mSheet = aSheet;
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return NS_OK;
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}
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NS_IMETHODIMP
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RemoveStyleSheetTxn::DoTransaction()
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{
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NS_ENSURE_TRUE(mEditor && 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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RemoveStyleSheetTxn::UndoTransaction()
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{
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NS_ENSURE_TRUE(mEditor && 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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RemoveStyleSheetTxn::GetTxnDescription(nsAString& aString)
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{
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aString.AssignLiteral("RemoveStyleSheetTxn");
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return NS_OK;
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}
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