/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 *           (C) 2001 Dirk Mueller (mueller@kde.org)
 *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012 Apple Inc. All
 * rights reserved.
 * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
 * (http://www.torchmobile.com/)
 * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#include "core/dom/TreeScopeStyleSheetCollection.h"

#include "core/css/ActiveStyleSheets.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/StyleRuleImport.h"
#include "core/css/StyleSheetContents.h"
#include "core/css/resolver/StyleResolver.h"
#include "core/dom/Element.h"
#include "core/dom/StyleEngine.h"
#include "core/html/HTMLLinkElement.h"
#include "core/html/HTMLStyleElement.h"

namespace blink {

TreeScopeStyleSheetCollection::TreeScopeStyleSheetCollection(
    TreeScope& treeScope)
    : m_treeScope(treeScope) {}

void TreeScopeStyleSheetCollection::addStyleSheetCandidateNode(Node& node) {
  if (node.isConnected())
    m_styleSheetCandidateNodes.add(&node);
}

bool TreeScopeStyleSheetCollection::mediaQueryAffectingValueChanged() {
  bool needsActiveStyleUpdate = false;
  for (const auto& activeSheet : m_activeAuthorStyleSheets) {
    if (activeSheet.first->mediaQueries())
      needsActiveStyleUpdate = true;
    StyleSheetContents* contents = activeSheet.first->contents();
    if (contents->hasMediaQueries())
      contents->clearRuleSet();
  }
  return needsActiveStyleUpdate;
}

void TreeScopeStyleSheetCollection::applyActiveStyleSheetChanges(
    StyleSheetCollection& newCollection) {
  document().styleEngine().applyRuleSetChanges(
      treeScope(), activeAuthorStyleSheets(),
      newCollection.activeAuthorStyleSheets());
  newCollection.swap(*this);
}

DEFINE_TRACE(TreeScopeStyleSheetCollection) {
  visitor->trace(m_treeScope);
  visitor->trace(m_styleSheetCandidateNodes);
  StyleSheetCollection::trace(visitor);
}

}  // namespace blink