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/**
* This file is part of the DOM implementation for KDE.
*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2005, 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 "CSSImportRule.h"
#include "CachedCSSStyleSheet.h"
#include "CSSStyleSheet.h"
#include "DocLoader.h"
#include "Document.h"
#include "MediaList.h"
namespace WebCore {
CSSImportRule::CSSImportRule(StyleBase* parent, const String& href, MediaList* media)
: CSSRule(parent)
, m_strHref(href)
, m_lstMedia(media)
, m_cachedSheet(0)
, m_loading(false)
{
if (m_lstMedia)
m_lstMedia->setParent(this);
else
m_lstMedia = new MediaList(this, String());
}
CSSImportRule::~CSSImportRule()
{
if (m_lstMedia)
m_lstMedia->setParent(0);
if (m_styleSheet)
m_styleSheet->setParent(0);
if (m_cachedSheet)
m_cachedSheet->removeClient(this);
}
void CSSImportRule::setCSSStyleSheet(const String& url, const String& charset, const CachedCSSStyleSheet* sheet)
{
if (m_styleSheet)
m_styleSheet->setParent(0);
m_styleSheet = new CSSStyleSheet(this, url, charset);
CSSStyleSheet* parent = parentStyleSheet();
bool strict = !parent || parent->useStrictParsing();
m_styleSheet->parseString(sheet->sheetText(strict), strict);
m_loading = false;
if (parent)
parent->checkLoaded();
}
bool CSSImportRule::isLoading() const
{
return m_loading || (m_styleSheet && m_styleSheet->isLoading());
}
void CSSImportRule::insertedIntoParent()
{
StyleBase* root = this;
StyleBase* parent;
while ((parent = root->parent()))
root = parent;
if (!root->isCSSStyleSheet())
return;
DocLoader* docLoader = static_cast<CSSStyleSheet*>(root)->docLoader();
if (!docLoader)
return;
String absHref = m_strHref;
CSSStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet->href().isNull())
// use parent styleheet's URL as the base URL
absHref = KURL(KURL(parentSheet->href()), m_strHref).string();
// Check for a cycle in our import chain. If we encounter a stylesheet
// in our parent chain with the same URL, then just bail.
for (parent = static_cast<StyleBase*>(this)->parent(); parent; parent = parent->parent()) {
if (parent->isCSSStyleSheet() && absHref == static_cast<CSSStyleSheet*>(parent)->href())
return;
}
m_cachedSheet = docLoader->requestCSSStyleSheet(absHref, parentSheet->charset());
if (m_cachedSheet) {
// if the import rule is issued dynamically, the sheet may be
// removed from the pending sheet count, so let the doc know
// the sheet being imported is pending.
if (parentSheet && parentSheet->loadCompleted() && parentSheet->doc())
parentSheet->doc()->addPendingSheet();
m_loading = true;
m_cachedSheet->addClient(this);
}
}
String CSSImportRule::cssText() const
{
String result = "@import url(\"";
result += m_strHref;
result += "\")";
if (m_lstMedia) {
result += " ";
result += m_lstMedia->mediaText();
}
result += ";";
return result;
}
} // namespace WebCore
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