blob: 1a8d918e5ebdfe41a5d9fe729260ee80f7e3b7d0 [file] [log] [blame]
/*
* 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);
styleResolver->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