/* -*- 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 http://mozilla.org/MPL/2.0/. */

/*

 * 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()

{

}

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;

      declaration->SetHTMLCSSStyleSheet(nullptr);

    } else {

      MOZ_ASSERT_UNREACHABLE("unexpected cached nsAttrValue type");

    }

    value->mValue.mCached = 0;

    iter.Remove();

  }

}

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?!");

  }

#endif

  mCachedStyleAttrs.Remove(aSerialized);

}

MiscContainer*

nsHTMLCSSStyleSheet::LookupStyleAttr(const nsAString& aSerialized)

{

  return mCachedStyleAttrs.Get(aSerialized);

}