/platform/external/webkit/WebCore/css/CSSMediaRule.cpp
https://github.com/aharish/totoro-gb-opensource-update2 · C++ · 131 lines · 76 code · 22 blank · 33 comment · 10 complexity · ee023b1e460e9c5eb8df3d21e2bac53c MD5 · raw file
- /**
- * (C) 1999-2003 Lars Knoll (knoll@kde.org)
- * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
- * Copyright (C) 2002, 2005, 2006 Apple Computer, Inc.
- * Copyright (C) 2006 Samuel Weinig (sam@webkit.org)
- *
- * 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 "CSSMediaRule.h"
- #include "CSSParser.h"
- #include "ExceptionCode.h"
- namespace WebCore {
- CSSMediaRule::CSSMediaRule(CSSStyleSheet* parent, PassRefPtr<MediaList> media, PassRefPtr<CSSRuleList> rules)
- : CSSRule(parent)
- , m_lstMedia(media)
- , m_lstCSSRules(rules)
- {
- }
- CSSMediaRule::~CSSMediaRule()
- {
- if (m_lstMedia)
- m_lstMedia->setParent(0);
- int length = m_lstCSSRules->length();
- for (int i = 0; i < length; i++)
- m_lstCSSRules->item(i)->setParent(0);
- }
- unsigned CSSMediaRule::append(CSSRule* rule)
- {
- if (!rule)
- return 0;
- rule->setParent(this);
- return m_lstCSSRules->insertRule(rule, m_lstCSSRules->length());
- }
- unsigned CSSMediaRule::insertRule(const String& rule, unsigned index, ExceptionCode& ec)
- {
- if (index > m_lstCSSRules->length()) {
- // INDEX_SIZE_ERR: Raised if the specified index is not a valid insertion point.
- ec = INDEX_SIZE_ERR;
- return 0;
- }
- CSSParser p(useStrictParsing());
- RefPtr<CSSRule> newRule = p.parseRule(parentStyleSheet(), rule);
- if (!newRule) {
- // SYNTAX_ERR: Raised if the specified rule has a syntax error and is unparsable.
- ec = SYNTAX_ERR;
- return 0;
- }
- if (newRule->isImportRule()) {
- // FIXME: an HIERARCHY_REQUEST_ERR should also be thrown for a @charset or a nested
- // @media rule. They are currently not getting parsed, resulting in a SYNTAX_ERR
- // to get raised above.
- // HIERARCHY_REQUEST_ERR: Raised if the rule cannot be inserted at the specified
- // index, e.g., if an @import rule is inserted after a standard rule set or other
- // at-rule.
- ec = HIERARCHY_REQUEST_ERR;
- return 0;
- }
- newRule->setParent(this);
- unsigned returnedIndex = m_lstCSSRules->insertRule(newRule.get(), index);
- // stylesheet() can only return 0 for computed style declarations.
- stylesheet()->styleSheetChanged();
- return returnedIndex;
- }
- void CSSMediaRule::deleteRule(unsigned index, ExceptionCode& ec)
- {
- if (index >= m_lstCSSRules->length()) {
- // INDEX_SIZE_ERR: Raised if the specified index does not correspond to a
- // rule in the media rule list.
- ec = INDEX_SIZE_ERR;
- return;
- }
- m_lstCSSRules->deleteRule(index);
- // stylesheet() can only return 0 for computed style declarations.
- stylesheet()->styleSheetChanged();
- }
- String CSSMediaRule::cssText() const
- {
- String result = "@media ";
- if (m_lstMedia) {
- result += m_lstMedia->mediaText();
- result += " ";
- }
- result += "{ \n";
- if (m_lstCSSRules) {
- unsigned len = m_lstCSSRules->length();
- for (unsigned i = 0; i < len; i++) {
- result += " ";
- result += m_lstCSSRules->item(i)->cssText();
- result += "\n";
- }
- }
- result += "}";
- return result;
- }
- } // namespace WebCore