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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at */
* style sheet and style rule processor representing style attributes
#include "nsHTMLCSSStyleSheet.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/DeclarationBlock.h"
#include "nsPresContext.h"
#include "mozilla/dom/Element.h"
#include "nsAttrValue.h"
#include "nsAttrValueInlines.h"
#include "nsCSSPseudoElements.h"
#include "mozilla/RestyleManager.h"
using namespace mozilla;
using namespace mozilla::dom;
nsHTMLCSSStyleSheet::nsHTMLCSSStyleSheet() = default;
nsHTMLCSSStyleSheet::~nsHTMLCSSStyleSheet() {
// We may go away before all of our cached style attributes do,
// so clean up any that are left.
for (auto iter = mCachedStyleAttrs.Iter(); !iter.Done(); iter.Next()) {
MiscContainer*& value = iter.Data();
// Ideally we'd just call MiscContainer::Evict, but we can't do that since
// we're iterating the hashtable.
if (value->mType == nsAttrValue::eCSSDeclaration) {
DeclarationBlock* declaration = value->mValue.mCSSDeclaration;
} else {
MOZ_ASSERT_UNREACHABLE("unexpected cached nsAttrValue type");
value->mValue.mCached = 0;
void nsHTMLCSSStyleSheet::CacheStyleAttr(const nsAString& aSerialized,
MiscContainer* aValue) {
mCachedStyleAttrs.Put(aSerialized, aValue);
void nsHTMLCSSStyleSheet::EvictStyleAttr(const nsAString& aSerialized,
MiscContainer* aValue) {
#ifdef DEBUG
NS_ASSERTION(aValue == mCachedStyleAttrs.Get(aSerialized),
"Cached value does not match?!");
MiscContainer* nsHTMLCSSStyleSheet::LookupStyleAttr(
const nsAString& aSerialized) {
return mCachedStyleAttrs.Get(aSerialized);