| /* |
| * 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/DocumentStyleSheetCollection.h" |
| |
| #include "core/css/resolver/StyleResolver.h" |
| #include "core/css/resolver/ViewportStyleResolver.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/DocumentStyleSheetCollector.h" |
| #include "core/dom/ProcessingInstruction.h" |
| #include "core/dom/StyleChangeReason.h" |
| #include "core/dom/StyleEngine.h" |
| #include "core/dom/StyleSheetCandidate.h" |
| #include "platform/RuntimeEnabledFeatures.h" |
| |
| namespace blink { |
| |
| DocumentStyleSheetCollection::DocumentStyleSheetCollection(TreeScope& treeScope) |
| : TreeScopeStyleSheetCollection(treeScope) { |
| DCHECK_EQ(treeScope.rootNode(), treeScope.rootNode().document()); |
| } |
| |
| void DocumentStyleSheetCollection::collectStyleSheetsFromCandidates( |
| StyleEngine& engine, |
| DocumentStyleSheetCollector& collector) { |
| for (Node* n : m_styleSheetCandidateNodes) { |
| StyleSheetCandidate candidate(*n); |
| |
| DCHECK(!candidate.isXSL()); |
| if (candidate.isImport()) { |
| Document* document = candidate.importedDocument(); |
| if (!document) |
| continue; |
| if (collector.hasVisited(document)) |
| continue; |
| collector.willVisit(document); |
| document->styleEngine().updateStyleSheetsInImport(collector); |
| continue; |
| } |
| |
| if (candidate.isEnabledAndLoading()) |
| continue; |
| |
| StyleSheet* sheet = candidate.sheet(); |
| if (!sheet) |
| continue; |
| |
| collector.appendSheetForList(sheet); |
| if (candidate.canBeActivated(engine.preferredStylesheetSetName())) |
| collector.appendActiveStyleSheet(toCSSStyleSheet(sheet)); |
| } |
| } |
| |
| void DocumentStyleSheetCollection::collectStyleSheets( |
| StyleEngine& engine, |
| DocumentStyleSheetCollector& collector) { |
| DCHECK_EQ(&document().styleEngine(), &engine); |
| collector.appendActiveStyleSheets(engine.injectedAuthorStyleSheets()); |
| collectStyleSheetsFromCandidates(engine, collector); |
| if (engine.inspectorStyleSheet()) |
| collector.appendActiveStyleSheet(engine.inspectorStyleSheet()); |
| } |
| |
| void DocumentStyleSheetCollection::updateActiveStyleSheets( |
| StyleEngine& engine, |
| StyleResolverUpdateMode updateMode) { |
| // StyleSheetCollection is GarbageCollected<>, allocate it on the heap. |
| StyleSheetCollection* collection = StyleSheetCollection::create(); |
| ActiveDocumentStyleSheetCollector collector(*collection); |
| collectStyleSheets(engine, collector); |
| |
| StyleSheetChange change; |
| analyzeStyleSheetChange(updateMode, collection->activeAuthorStyleSheets(), |
| change); |
| |
| if (change.styleResolverUpdateType == Reconstruct) { |
| engine.clearMasterResolver(); |
| // TODO(rune@opera.com): The following depends on whether StyleRuleFontFace |
| // was modified or not. We should only remove modified/removed @font-face |
| // rules, or @font-face rules from removed stylesheets. We currently avoid |
| // clearing the font cache when we have had an analyzed update and no |
| // @font-face rules were removed, in which case requiresFullStyleRecalc will |
| // be false. |
| if (change.requiresFullStyleRecalc) |
| engine.clearFontCache(); |
| } else if (StyleResolver* styleResolver = engine.resolver()) { |
| if (change.styleResolverUpdateType != Additive) { |
| DCHECK_EQ(change.styleResolverUpdateType, Reset); |
| engine.resetAuthorStyle(treeScope()); |
| engine.removeFontFaceRules(change.fontFaceRulesToRemove); |
| styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets); |
| styleResolver->lazyAppendAuthorStyleSheets( |
| 0, collection->activeAuthorStyleSheets()); |
| } else { |
| styleResolver->lazyAppendAuthorStyleSheets( |
| m_activeAuthorStyleSheets.size(), |
| collection->activeAuthorStyleSheets()); |
| } |
| } |
| if (change.requiresFullStyleRecalc) |
| document().setNeedsStyleRecalc( |
| SubtreeStyleChange, StyleChangeReasonForTracing::create( |
| StyleChangeReason::ActiveStylesheetsUpdate)); |
| |
| collection->swap(*this); |
| collection->dispose(); |
| } |
| |
| void DocumentStyleSheetCollection::collectViewportRules( |
| ViewportStyleResolver& viewportResolver) { |
| for (Node* node : m_styleSheetCandidateNodes) { |
| StyleSheetCandidate candidate(*node); |
| |
| if (candidate.isImport()) |
| continue; |
| StyleSheet* sheet = candidate.sheet(); |
| if (!sheet) |
| continue; |
| if (!candidate.canBeActivated( |
| document().styleEngine().preferredStylesheetSetName())) |
| continue; |
| viewportResolver.collectViewportRulesFromAuthorSheet( |
| *toCSSStyleSheet(sheet)); |
| } |
| } |
| |
| } // namespace blink |