Merge all StyleSheetCollections.

sky/engine/core/dom/ShadowTreeStyleSheetCollection.cpp

-/*
- * 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/ShadowTreeStyleSheetCollection.h"
-
-#include "sky/engine/core/css/CSSStyleSheet.h"
-#include "sky/engine/core/css/resolver/StyleResolver.h"
-#include "sky/engine/core/dom/Element.h"
-#include "sky/engine/core/dom/StyleEngine.h"
-#include "sky/engine/core/dom/shadow/ShadowRoot.h"
-#include "sky/engine/core/html/HTMLStyleElement.h"
-
-namespace blink {
-
-ShadowTreeStyleSheetCollection::ShadowTreeStyleSheetCollection(ShadowRoot& shadowRoot)
-    : TreeScopeStyleSheetCollection(shadowRoot)
-{
-}
-
-void ShadowTreeStyleSheetCollection::collectStyleSheets(StyleEngine* engine, StyleSheetCollection& collection)
-{
-    DocumentOrderedList::iterator begin = m_styleSheetCandidateNodes.begin();
-    DocumentOrderedList::iterator end = m_styleSheetCandidateNodes.end();
-    for (DocumentOrderedList::iterator it = begin; it != end; ++it) {
-        Node* node = *it;
-        if (!isHTMLStyleElement(*node))
-            continue;
-        if (CSSStyleSheet* sheet = toHTMLStyleElement(node)->sheet())
-            collection.appendActiveStyleSheet(sheet);
-    }
-}
-
-void ShadowTreeStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine)
-{
-    StyleSheetCollection collection;
-    collectStyleSheets(engine, collection);
-
-    if (StyleResolver* styleResolver = engine->resolver()) {
-        // We should not destroy StyleResolver when we find any stylesheet update in a shadow tree.
-        // In this case, we will reset rulesets created from style elements in the shadow tree.
-        styleResolver->resetAuthorStyle(treeScope());
-        styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets);
-        styleResolver->lazyAppendAuthorStyleSheets(0, collection.activeAuthorStyleSheets());
-    }
-
-    toShadowRoot(treeScope().rootNode()).host()->setNeedsStyleRecalc(SubtreeStyleChange);
-
-    collection.swap(*this);
-}
-
-}