mirror of
https://bitbucket.org/smil3y/kdelibs.git
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114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/*
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* This file is part of the DOM implementation for KDE.
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*
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* Copyright (C) 2010 Maksim Orlovich (maksim@kde.org)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "wa_selectors.h"
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#include "xml/dom_nodeimpl.h"
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#include "xml/dom_elementimpl.h"
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#include "xml/dom_nodelistimpl.h"
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#include <wtf/RefPtr.h>
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#include "css/cssparser.h"
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#include "css/cssstyleselector.h"
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using namespace DOM;
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namespace khtml {
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namespace SelectorQuery {
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static WTF::PassRefPtr<DOM::NodeListImpl> querySelectorImp(bool justOne, DOM::NodeImpl* root, const DOM::DOMString& query, int& ec)
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{
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// Parse the query.
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CSSParser p;
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QList<CSSSelector*> selectors = p.parseSelectorList(root->document(), query);
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if (selectors.isEmpty()) {
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ec = DOMException::SYNTAX_ERR;
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return 0;
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}
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khtml::CSSStyleSelector* styleSelector = root->document()->styleSelector();
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// ### not in the spec.
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if (!styleSelector) {
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ec = DOMException::INVALID_STATE_ERR;
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return 0;
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}
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// Check for matches. We specialize some paths for common selectors.
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DOM::StaticNodeListImpl* matches = new DOM::StaticNodeListImpl;
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bool requiresClass = true;
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bool requiresId = true;
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for (int i = 0; i < selectors.size(); ++i) {
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if (selectors[i]->match != CSSSelector::Class)
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requiresClass = false;
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if (selectors[i]->match != CSSSelector::Id)
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requiresId = false;
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}
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for (DOM::NodeImpl* cur = root; cur; cur = cur->traverseNextNode(root)) {
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if (requiresClass && !cur->hasClass())
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continue;
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if (requiresId && !cur->hasID())
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continue;
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DOM::ElementImpl* e = 0;
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if (cur->isElementNode())
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e = static_cast<DOM::ElementImpl*>(cur);
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if (e && styleSelector->isMatchedByAnySelector(e, selectors)) {
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matches->append(e);
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if (justOne)
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break;
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}
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}
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// Cleanup the selectors.
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qDeleteAll(selectors);
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// all done
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return matches;
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}
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WTF::PassRefPtr<DOM::ElementImpl> querySelector(DOM::NodeImpl* root, const DOM::DOMString& query, int& ec)
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{
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WTF::RefPtr<DOM::NodeListImpl> nl = querySelectorImp(true, root, query, ec);
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if (nl && nl->length()) {
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return static_cast<DOM::ElementImpl*>(nl->item(0));
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}
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return 0;
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}
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WTF::PassRefPtr<DOM::NodeListImpl> querySelectorAll(DOM::NodeImpl* root, const DOM::DOMString& query, int& ec)
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{
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return querySelectorImp(false, root, query, ec);
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}
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} // namespace SelectorQuery
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} // namespace khtml
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// kate: indent-width 4; replace-tabs on; tab-width 4; space-indent on;
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