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      1 /**
      2  * (C) 1999-2003 Lars Knoll (knoll (at) kde.org)
      3  * (C) 2002-2003 Dirk Mueller (mueller (at) kde.org)
      4  * Copyright (C) 2002, 2005, 2006 Apple Computer, Inc.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #include "config.h"
     23 #include "CSSRuleList.h"
     24 
     25 #include "CSSMutableStyleDeclaration.h"
     26 #include "CSSRule.h"
     27 #include "StyleList.h"
     28 #include "WebKitCSSKeyframeRule.h"
     29 
     30 namespace WebCore {
     31 
     32 CSSRuleList::CSSRuleList()
     33 {
     34 }
     35 
     36 CSSRuleList::CSSRuleList(StyleList* list, bool omitCharsetRules)
     37 {
     38     m_list = list;
     39     if (list && omitCharsetRules) {
     40         m_list = 0;
     41         unsigned len = list->length();
     42         for (unsigned i = 0; i < len; ++i) {
     43             StyleBase* style = list->item(i);
     44             if (style->isRule() && !style->isCharsetRule())
     45                 append(static_cast<CSSRule*>(style));
     46         }
     47     }
     48 }
     49 
     50 CSSRuleList::~CSSRuleList()
     51 {
     52 }
     53 
     54 unsigned CSSRuleList::length() const
     55 {
     56     return m_list ? m_list->length() : m_lstCSSRules.size();
     57 }
     58 
     59 CSSRule* CSSRuleList::item(unsigned index)
     60 {
     61     if (m_list) {
     62         StyleBase* rule = m_list->item(index);
     63         ASSERT(!rule || rule->isRule());
     64         return static_cast<CSSRule*>(rule);
     65     }
     66 
     67     if (index < m_lstCSSRules.size())
     68         return m_lstCSSRules[index].get();
     69     return 0;
     70 }
     71 
     72 void CSSRuleList::deleteRule(unsigned index)
     73 {
     74     ASSERT(!m_list);
     75 
     76     if (index >= m_lstCSSRules.size()) {
     77         // FIXME: Should we throw an INDEX_SIZE_ERR exception here?
     78         return;
     79     }
     80 
     81     if (m_lstCSSRules[index]->isKeyframeRule()) {
     82         if (CSSMutableStyleDeclaration* style = static_cast<WebKitCSSKeyframeRule*>(m_lstCSSRules[index].get())->style())
     83             style->setParent(0);
     84     }
     85 
     86     m_lstCSSRules[index]->setParent(0);
     87     m_lstCSSRules.remove(index);
     88 }
     89 
     90 void CSSRuleList::append(CSSRule* rule)
     91 {
     92     ASSERT(!m_list);
     93     if (!rule) {
     94         // FIXME: Should we throw an exception?
     95         return;
     96     }
     97 
     98     m_lstCSSRules.append(rule);
     99 }
    100 
    101 unsigned CSSRuleList::insertRule(CSSRule* rule, unsigned index)
    102 {
    103     ASSERT(!m_list);
    104     if (!rule) {
    105         // FIXME: Should we throw an exception?
    106         return 0;
    107     }
    108 
    109     if (index > m_lstCSSRules.size()) {
    110         // FIXME: Should we throw an INDEX_SIZE_ERR exception here?
    111         return 0;
    112     }
    113 
    114     m_lstCSSRules.insert(index, rule);
    115     return index;
    116 }
    117 
    118 } // namespace WebCore
    119