/* * 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/StyleSheetCollection.h" #include "sky/engine/core/css/CSSStyleSheet.h" #include "sky/engine/core/css/resolver/StyleResolver.h" #include "sky/engine/core/dom/Document.h" #include "sky/engine/core/dom/StyleEngine.h" #include "sky/engine/core/dom/shadow/ShadowRoot.h" #include "sky/engine/core/dom/TreeScope.h" #include "sky/engine/core/html/HTMLStyleElement.h" namespace blink { StyleSheetCollection::StyleSheetCollection(TreeScope& treeScope) : m_treeScope(treeScope) { } StyleSheetCollection::~StyleSheetCollection() { } void StyleSheetCollection::addStyleSheetCandidateNode(Node* node, bool) { if (!node->inDocument()) return; // Until the exists, we have no choice but to compare document positions, // since styles outside of the body and head continue to be shunted into the head // (and thus can shift to end up before dynamically added DOM content that is also // outside the body). m_styleSheetCandidateNodes.add(node); } void StyleSheetCollection::removeStyleSheetCandidateNode(Node* node, ContainerNode* scopingNode) { m_styleSheetCandidateNodes.remove(node); } void StyleSheetCollection::collectStyleSheets(Vector>& sheets) { 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()) sheets.append(sheet); } } void StyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine) { Vector> candidateSheets; collectStyleSheets(candidateSheets); Node& root = m_treeScope.rootNode(); // TODO(esprehn): Remove special casing for Document. if (root.isDocumentNode()) { engine->clearResolver(); // FIMXE: The following depends on whether StyleRuleFontFace was modified or not. // No need to always-clear font cache. engine->clearFontCache(); } else 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(m_treeScope); styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets); styleResolver->lazyAppendAuthorStyleSheets(0, candidateSheets); } // TODO(esprehn): We should avoid subtree recalcs in sky when rules change // and only recalc specific tree scopes. root.setNeedsStyleRecalc(SubtreeStyleChange); // TODO(esprehn): We should use LocalStyleChange, :host rule changes // can only impact the host directly as Sky has no descendant selectors. if (root.isShadowRoot()) toShadowRoot(root).host()->setNeedsStyleRecalc(SubtreeStyleChange); m_activeAuthorStyleSheets.swap(candidateSheets); } }