/*
 * 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 "sky/engine/config.h"
#include "sky/engine/core/dom/DocumentStyleSheetCollection.h"

#include "gen/sky/platform/RuntimeEnabledFeatures.h"
#include "sky/engine/core/css/resolver/StyleResolver.h"
#include "sky/engine/core/dom/Document.h"
#include "sky/engine/core/dom/DocumentStyleSheetCollector.h"
#include "sky/engine/core/dom/StyleEngine.h"
#include "sky/engine/core/dom/StyleSheetCandidate.h"

namespace blink {

DocumentStyleSheetCollection::DocumentStyleSheetCollection(TreeScope& treeScope)
    : TreeScopeStyleSheetCollection(treeScope)
{
    ASSERT(treeScope.rootNode() == treeScope.rootNode().document());
}

void DocumentStyleSheetCollection::collectStyleSheetsFromCandidates(StyleEngine* engine, DocumentStyleSheetCollector& collector)
{
    DocumentOrderedList::iterator begin = m_styleSheetCandidateNodes.begin();
    DocumentOrderedList::iterator end = m_styleSheetCandidateNodes.end();
    for (DocumentOrderedList::iterator it = begin; it != end; ++it) {
        Node* n = *it;
        StyleSheetCandidate candidate(*n);

        CSSStyleSheet* sheet = candidate.sheet();
        if (!sheet)
            continue;

        collector.appendSheetForList(sheet);
        if (candidate.canBeActivated())
            collector.appendActiveStyleSheet(sheet);
    }
}

void DocumentStyleSheetCollection::collectStyleSheets(StyleEngine* engine, DocumentStyleSheetCollector& collector)
{
    ASSERT(document().styleEngine() == engine);
    collector.appendActiveStyleSheets(engine->documentAuthorStyleSheets());
    collectStyleSheetsFromCandidates(engine, collector);
}

void DocumentStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine)
{
    StyleSheetCollection collection;
    ActiveDocumentStyleSheetCollector collector(collection);
    collectStyleSheets(engine, collector);

    engine->clearMasterResolver();
    // FIMXE: The following depends on whether StyleRuleFontFace was modified or not.
    // No need to always-clear font cache.
    engine->clearFontCache();

    // TODO(esprehn): This is terrible and not needed in Sky, we should mark
    // specific tree scopes dirty instead.
    document().setNeedsStyleRecalc(SubtreeStyleChange);

    collection.swap(*this);

    updateUsesRemUnits();
}

}