/** * This file is part of the XSL implementation. * * Copyright (C) 2004, 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., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ #include "config.h" #include "XSLImportRule.h" #if ENABLE(XSLT) #include "CachedXSLStyleSheet.h" #include "DocLoader.h" #include "XSLStyleSheet.h" namespace WebCore { XSLImportRule::XSLImportRule(StyleBase* parent, const String& href) : StyleBase(parent) , m_strHref(href) , m_cachedSheet(0) , m_loading(false) { } XSLImportRule::~XSLImportRule() { if (m_styleSheet) m_styleSheet->setParent(0); if (m_cachedSheet) m_cachedSheet->deref(this); } XSLStyleSheet* XSLImportRule::parentStyleSheet() const { return (parent() && parent()->isXSLStyleSheet()) ? static_cast(parent()) : 0; } void XSLImportRule::setXSLStyleSheet(const String& url, const String& sheet) { if (m_styleSheet) m_styleSheet->setParent(0); m_styleSheet = new XSLStyleSheet(this, url); XSLStyleSheet* parent = parentStyleSheet(); if (parent) m_styleSheet->setOwnerDocument(parent->ownerDocument()); m_styleSheet->parseString(sheet); m_loading = false; checkLoaded(); } bool XSLImportRule::isLoading() { return (m_loading || (m_styleSheet && m_styleSheet->isLoading())); } void XSLImportRule::loadSheet() { DocLoader* docLoader = 0; StyleBase* root = this; StyleBase* parent; while ((parent = root->parent())) root = parent; if (root->isXSLStyleSheet()) docLoader = static_cast(root)->docLoader(); String absHref = m_strHref; XSLStyleSheet* parentSheet = parentStyleSheet(); if (!parentSheet->href().isNull()) // use parent styleheet's URL as the base URL absHref = KURL(parentSheet->href().deprecatedString(),m_strHref.deprecatedString()).url(); // 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(this)->parent(); parent; parent = parent->parent()) { if (absHref == parent->baseURL()) return; } m_cachedSheet = docLoader->requestXSLStyleSheet(absHref); if (m_cachedSheet) { m_cachedSheet->ref(this); // If the imported sheet is in the cache, then setXSLStyleSheet gets called, // and the sheet even gets parsed (via parseString). In this case we have // loaded (even if our subresources haven't), so if we have a stylesheet after // checking the cache, then we've clearly loaded. if (!m_styleSheet) m_loading = true; } } } // namespace WebCore #endif // ENABLE(XSLT)