blob: 68a07721ba1390f639d38ffd223c6fff2b6ba118 [file] [log] [blame]
/**
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* Copyright (C) 2004, 2006 Apple Computer, Inc.
*
* 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 "StyleSheet.h"
#include "MediaList.h"
#include "Node.h"
namespace WebCore {
StyleSheet::StyleSheet(StyleSheet* parentSheet, const String& originalURL, const KURL& finalURL)
: StyleList(parentSheet)
, m_parentNode(0)
, m_originalURL(originalURL)
, m_finalURL(finalURL)
, m_disabled(false)
{
}
StyleSheet::StyleSheet(Node* parentNode, const String& originalURL, const KURL& finalURL)
: StyleList(0)
, m_parentNode(parentNode)
, m_originalURL(originalURL)
, m_finalURL(finalURL)
, m_disabled(false)
{
}
StyleSheet::StyleSheet(StyleBase* owner, const String& originalURL, const KURL& finalURL)
: StyleList(owner)
, m_parentNode(0)
, m_originalURL(originalURL)
, m_finalURL(finalURL)
, m_disabled(false)
{
}
StyleSheet::~StyleSheet()
{
if (m_media)
m_media->setParent(0);
// For style rules outside the document, .parentStyleSheet can become null even if the style rule
// is still observable from JavaScript. This matches the behavior of .parentNode for nodes, but
// it's not ideal because it makes the CSSOM's behavior depend on the timing of garbage collection.
for (unsigned i = 0; i < length(); ++i) {
ASSERT(item(i)->parent() == this);
item(i)->setParent(0);
}
}
StyleSheet* StyleSheet::parentStyleSheet() const
{
return (parent() && parent()->isStyleSheet()) ? static_cast<StyleSheet*>(parent()) : 0;
}
void StyleSheet::setMedia(PassRefPtr<MediaList> media)
{
if (m_media)
m_media->setParent(0);
m_media = media;
m_media->setParent(this);
}
KURL StyleSheet::completeURL(const String& url) const
{
// Always return a null URL when passed a null string.
// FIXME: Should we change the KURL constructor to have this behavior?
// See also Document::completeURL(const String&)
if (url.isNull())
return KURL();
return KURL(baseURL(), url);
}
}