forked from mirrors/gecko-dev
cb56e2c9f3
Now that BeginUpdate is useless for the UPDATE_STYLE case, we don't need the update mechanism at all. Just ensure that ApplicableStylesChanged is called on the pres shell via the relevant RuleChanged, etc. notifications. There's a big hidden gotcha here. nsIDocument::BeginUpdate does put a script blocker on the stack for these updates. However it's not needed, since no script can run during these notifications (only the stylesheet events we post for devtools, but those use AsyncEventDispatcher and PostDOMEvents, so they don't try to run immediately). nsIDocument::BeginUpdate also does XBL binding attached queue stuff, but we can't change bindings during these notifications anyway, so it also doesn't matter. MozReview-Commit-ID: HJvK6zQfloh
115 lines
3.4 KiB
C++
115 lines
3.4 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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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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if (nsCOMPtr<nsIDocument> doc = aEditor.GetDocument()) {
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doc->AddStyleSheet(aSheet);
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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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if (nsCOMPtr<nsIDocument> doc = aEditor.GetDocument()) {
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doc->RemoveStyleSheet(aSheet);
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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& aEditorBase,
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StyleSheet& aStyleSheet)
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: mEditorBase(&aEditorBase)
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, mSheet(&aStyleSheet)
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(AddStyleSheetTransaction,
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EditTransactionBase,
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mEditorBase,
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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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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mSheet)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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AddStyleSheet(*mEditorBase, 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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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mSheet)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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RemoveStyleSheet(*mEditorBase, mSheet);
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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(
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EditorBase& aEditorBase,
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StyleSheet& aStyleSheet)
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: mEditorBase(&aEditorBase)
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, mSheet(&aStyleSheet)
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{
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}
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NS_IMPL_CYCLE_COLLECTION_INHERITED(RemoveStyleSheetTransaction,
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EditTransactionBase,
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mEditorBase,
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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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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mSheet)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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RemoveStyleSheet(*mEditorBase, 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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if (NS_WARN_IF(!mEditorBase) || NS_WARN_IF(!mSheet)) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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AddStyleSheet(*mEditorBase, mSheet);
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return NS_OK;
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}
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} // namespace mozilla
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