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      1 /**
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2004, 2006, 2007 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  */
     20 
     21 #include "config.h"
     22 #include "StyleSheetList.h"
     23 
     24 #include "CSSStyleSheet.h"
     25 #include "Document.h"
     26 #include "HTMLNames.h"
     27 #include "HTMLStyleElement.h"
     28 #include "PlatformString.h"
     29 
     30 namespace WebCore {
     31 
     32 using namespace HTMLNames;
     33 
     34 StyleSheetList::StyleSheetList(Document* doc)
     35     : m_doc(doc)
     36 {
     37 }
     38 
     39 StyleSheetList::~StyleSheetList()
     40 {
     41 }
     42 
     43 void StyleSheetList::documentDestroyed()
     44 {
     45     m_doc = 0;
     46 }
     47 
     48 unsigned StyleSheetList::length() const
     49 {
     50     return m_sheets.size();
     51 }
     52 
     53 StyleSheet* StyleSheetList::item(unsigned index)
     54 {
     55     return index < length() ? m_sheets[index].get() : 0;
     56 }
     57 
     58 HTMLStyleElement* StyleSheetList::getNamedItem(const String& name) const
     59 {
     60     if (!m_doc)
     61         return 0;
     62 
     63     // IE also supports retrieving a stylesheet by name, using the name/id of the <style> tag
     64     // (this is consistent with all the other collections)
     65     // ### Bad implementation because returns a single element (are IDs always unique?)
     66     // and doesn't look for name attribute.
     67     // But unicity of stylesheet ids is good practice anyway ;)
     68 
     69     Element* element = m_doc->getElementById(name);
     70     if (element && element->hasTagName(styleTag))
     71         return static_cast<HTMLStyleElement*>(element);
     72     return 0;
     73 }
     74 
     75 } // namespace WebCore
     76