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/*
* 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 "config.h"
#include "core/dom/ShadowTreeStyleSheetCollection.h"
#include "core/HTMLNames.h"
#include "core/css/CSSStyleSheet.h"
#include "core/css/resolver/StyleResolver.h"
#include "core/dom/Element.h"
#include "core/dom/StyleEngine.h"
#include "core/dom/shadow/ShadowRoot.h"
#include "core/html/HTMLStyleElement.h"
namespace WebCore {
using namespace HTMLNames;
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;
StyleSheet* sheet = 0;
CSSStyleSheet* activeSheet = 0;
if (!isHTMLStyleElement(*node))
continue;
HTMLStyleElement* element = toHTMLStyleElement(node);
const AtomicString& title = element->fastGetAttribute(titleAttr);
bool enabledViaScript = false;
sheet = element->sheet();
if (sheet && !sheet->disabled() && sheet->isCSSStyleSheet())
activeSheet = toCSSStyleSheet(sheet);
// FIXME: clarify how PREFERRED or ALTERNATE works in shadow trees.
// Should we set preferred/selected stylesheets name in shadow trees and
// use the name in document?
if (!enabledViaScript && sheet && !title.isEmpty()) {
if (engine->preferredStylesheetSetName().isEmpty()) {
engine->setPreferredStylesheetSetName(title);
engine->setSelectedStylesheetSetName(title);
}
if (title != engine->preferredStylesheetSetName())
activeSheet = 0;
}
const AtomicString& rel = element->fastGetAttribute(relAttr);
if (rel.contains("alternate") && title.isEmpty())
activeSheet = 0;
if (sheet)
collection.appendSheetForList(sheet);
if (activeSheet)
collection.appendActiveStyleSheet(activeSheet);
}
}
void ShadowTreeStyleSheetCollection::updateActiveStyleSheets(StyleEngine* engine, StyleResolverUpdateMode updateMode)
{
StyleSheetCollection collection;
collectStyleSheets(engine, collection);
StyleSheetChange change;
analyzeStyleSheetChange(updateMode, collection, change);
if (StyleResolver* styleResolver = engine->resolver()) {
// FIXME: We might have already had styles in child treescope. In this case, we cannot use buildScopedStyleTreeInDocumentOrder.
// Need to change "false" to some valid condition.
styleResolver->setBuildScopedStyleTreeInDocumentOrder(false);
if (change.styleResolverUpdateType != Additive) {
// 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.
resetAllRuleSetsInTreeScope(styleResolver);
styleResolver->removePendingAuthorStyleSheets(m_activeAuthorStyleSheets);
styleResolver->lazyAppendAuthorStyleSheets(0, collection.activeAuthorStyleSheets());
} else {
styleResolver->lazyAppendAuthorStyleSheets(m_activeAuthorStyleSheets.size(), collection.activeAuthorStyleSheets());
}
}
if (change.requiresFullStyleRecalc)
toShadowRoot(m_treeScope.rootNode()).host()->setNeedsStyleRecalc(SubtreeStyleChange);
m_scopingNodesForStyleScoped.didRemoveScopingNodes();
collection.swap(*this);
updateUsesRemUnits();
}
}
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