| /** |
| * (C) 1999-2003 Lars Knoll (knoll@kde.org) |
| * Copyright (C) 2004, 2006, 2007 Apple 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/css/StyleSheetList.h" |
| |
| #include "core/HTMLNames.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/StyleEngine.h" |
| #include "core/frame/UseCounter.h" |
| #include "core/html/HTMLStyleElement.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace blink { |
| |
| using namespace HTMLNames; |
| |
| StyleSheetList::StyleSheetList(TreeScope* treeScope) : m_treeScope(treeScope) {} |
| |
| inline const HeapVector<Member<StyleSheet>>& StyleSheetList::styleSheets() |
| const { |
| return document()->styleEngine().styleSheetsForStyleSheetList(*m_treeScope); |
| } |
| |
| unsigned StyleSheetList::length() { |
| return styleSheets().size(); |
| } |
| |
| StyleSheet* StyleSheetList::item(unsigned index) { |
| const HeapVector<Member<StyleSheet>>& sheets = styleSheets(); |
| return index < sheets.size() ? sheets[index].get() : nullptr; |
| } |
| |
| HTMLStyleElement* StyleSheetList::getNamedItem(const AtomicString& name) const { |
| // IE also supports retrieving a stylesheet by name, using the name/id of the |
| // <style> tag (this is consistent with all the other collections) ### Bad |
| // implementation because returns a single element (are IDs always unique?) |
| // and doesn't look for name attribute. But unicity of stylesheet ids is good |
| // practice anyway ;) |
| // FIXME: We should figure out if we should change this or fix the spec. |
| Element* element = m_treeScope->getElementById(name); |
| return isHTMLStyleElement(element) ? toHTMLStyleElement(element) : nullptr; |
| } |
| |
| CSSStyleSheet* StyleSheetList::anonymousNamedGetter(const AtomicString& name) { |
| if (document()) |
| UseCounter::count(*document(), |
| UseCounter::StyleSheetListAnonymousNamedGetter); |
| HTMLStyleElement* item = getNamedItem(name); |
| if (!item) |
| return nullptr; |
| return item->sheet(); |
| } |
| |
| DEFINE_TRACE(StyleSheetList) { |
| visitor->trace(m_treeScope); |
| } |
| |
| } // namespace blink |