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tdelibs/khtml/css/css_stylesheetimpl.cpp

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/**
* This file is part of the DOM implementation for KDE.
*
* Copyright (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2004 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.
*
*/
//#define CSS_STYLESHEET_DEBUG
#include "dom/dom_string.h"
#include "dom/dom_exception.h"
#include "dom/css_stylesheet.h"
#include "dom/css_rule.h"
#include "css/css_ruleimpl.h"
#include "css/css_valueimpl.h"
#include "css/cssparser.h"
#include "css/css_stylesheetimpl.h"
#include "xml/dom_nodeimpl.h"
#include "html/html_documentimpl.h"
#include "misc/loader.h"
#include <kdebug.h>
using namespace DOM;
using namespace khtml;
// --------------------------------------------------------------------------------
StyleSheetImpl::StyleSheetImpl(StyleSheetImpl *parentSheet, DOMString href)
: StyleListImpl(parentSheet)
{
m_disabled = false;
m_media = 0;
m_parentNode = 0;
m_strHref = href;
}
StyleSheetImpl::StyleSheetImpl(DOM::NodeImpl *parentNode, DOMString href)
: StyleListImpl()
{
m_parentNode = parentNode;
m_disabled = false;
m_media = 0;
m_strHref = href;
}
StyleSheetImpl::StyleSheetImpl(StyleBaseImpl *owner, DOMString href)
: StyleListImpl(owner)
{
m_disabled = false;
m_media = 0;
m_parentNode = 0;
m_strHref = href;
}
StyleSheetImpl::~StyleSheetImpl()
{
if(m_media) {
m_media->setParent( 0 );
m_media->deref();
}
}
StyleSheetImpl *StyleSheetImpl::parentStyleSheet() const
{
if( !m_parent ) return 0;
if( m_parent->isStyleSheet() ) return static_cast<StyleSheetImpl *>(m_parent);
if( m_parent->isRule() ) return m_parent->stylesheet();
return 0;
}
void StyleSheetImpl::setMedia( MediaListImpl *media )
{
if( media )
media->ref();
if( m_media )
m_media->deref();
m_media = media;
}
void StyleSheetImpl::setDisabled( bool disabled )
{
bool updateStyle = isCSSStyleSheet() && m_parentNode && disabled != m_disabled;
m_disabled = disabled;
if (updateStyle)
m_parentNode->getDocument()->updateStyleSelector();
}
// -----------------------------------------------------------------------
CSSStyleSheetImpl::CSSStyleSheetImpl(CSSStyleSheetImpl *parentSheet, DOMString href)
: StyleSheetImpl(parentSheet, href)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
m_doc = parentSheet ? parentSheet->doc() : 0;
m_implicit = false;
m_namespaces = 0;
m_defaultNamespace = anyNamespace;
}
CSSStyleSheetImpl::CSSStyleSheetImpl(DOM::NodeImpl *parentNode, DOMString href, bool _implicit)
: StyleSheetImpl(parentNode, href)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
m_doc = parentNode->getDocument();
m_implicit = _implicit;
m_namespaces = 0;
m_defaultNamespace = anyNamespace;
}
CSSStyleSheetImpl::CSSStyleSheetImpl(CSSRuleImpl *ownerRule, DOMString href)
: StyleSheetImpl(ownerRule, href)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
m_doc = static_cast<CSSStyleSheetImpl*>(ownerRule->stylesheet())->doc();
m_implicit = false;
m_namespaces = 0;
m_defaultNamespace = anyNamespace;
}
CSSStyleSheetImpl::CSSStyleSheetImpl(DOM::NodeImpl *parentNode, CSSStyleSheetImpl *orig)
: StyleSheetImpl(parentNode, orig->m_strHref)
{
m_lstChildren = new QPtrList<StyleBaseImpl>;
StyleBaseImpl *rule;
for ( rule = orig->m_lstChildren->first(); rule != 0; rule = orig->m_lstChildren->next() )
{
m_lstChildren->append(rule);
rule->setParent(this);
}
m_doc = parentNode->getDocument();
m_implicit = false;
m_namespaces = 0;
m_defaultNamespace = anyNamespace;
}
CSSStyleSheetImpl::CSSStyleSheetImpl(CSSRuleImpl *ownerRule, CSSStyleSheetImpl *orig)
: StyleSheetImpl(ownerRule, orig->m_strHref)
{
// m_lstChildren is deleted in StyleListImpl
m_lstChildren = new QPtrList<StyleBaseImpl>;
StyleBaseImpl *rule;
for ( rule = orig->m_lstChildren->first(); rule != 0; rule = orig->m_lstChildren->next() )
{
m_lstChildren->append(rule);
rule->setParent(this);
}
m_doc = static_cast<CSSStyleSheetImpl*>(ownerRule->stylesheet())->doc();
m_implicit = false;
m_namespaces = 0;
m_defaultNamespace = anyNamespace;
}
CSSRuleImpl *CSSStyleSheetImpl::ownerRule() const
{
if( !m_parent ) return 0;
if( m_parent->isRule() ) return static_cast<CSSRuleImpl *>(m_parent);
return 0;
}
unsigned long CSSStyleSheetImpl::insertRule( const DOMString &rule, unsigned long index, int &exceptioncode )
{
exceptioncode = 0;
if(index > m_lstChildren->count()) {
exceptioncode = DOMException::INDEX_SIZE_ERR;
return 0;
}
CSSParser p( strictParsing );
CSSRuleImpl *r = p.parseRule( this, rule );
if(!r) {
exceptioncode = CSSException::SYNTAX_ERR + CSSException::_EXCEPTION_OFFSET;
return 0;
}
// ###
// 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.
m_lstChildren->insert(index, r);
if (m_doc)
m_doc->updateStyleSelector(true /*shallow*/);
return index;
}
CSSRuleList CSSStyleSheetImpl::cssRules()
{
return this;
}
void CSSStyleSheetImpl::deleteRule( unsigned long index, int &exceptioncode )
{
exceptioncode = 0;
StyleBaseImpl *b = m_lstChildren->take(index);
if(!b) {
exceptioncode = DOMException::INDEX_SIZE_ERR;
return;
}
// TreeShared requires delete not deref when removed from tree
b->setParent(0);
if( !b->refCount() ) delete b;
if (m_doc)
m_doc->updateStyleSelector(true /*shallow*/);
}
void CSSStyleSheetImpl::addNamespace(CSSParser* p, const DOM::DOMString& prefix, const DOM::DOMString& uri)
{
int exceptioncode = 0;
if (uri.isEmpty())
return;
m_namespaces = new CSSNamespace(prefix, uri, m_namespaces);
if (prefix.isEmpty()) {
Q_ASSERT(m_doc != 0);
m_defaultNamespace = m_doc->getId(NodeImpl::NamespaceId, uri.implementation(), false, false, &exceptioncode);
}
}
void CSSStyleSheetImpl::determineNamespace(Q_UINT32& id, const DOM::DOMString& prefix)
{
// If the stylesheet has no namespaces we can just return. There won't be any need to ever check
// namespace values in selectors.
if (!m_namespaces)
return;
if (prefix.isEmpty())
id = makeId(emptyNamespace, localNamePart(id)); // No namespace. If an element/attribute has a namespace, we won't match it.
else if (prefix == "*")
id = makeId(anyNamespace, localNamePart(id)); // We'll match any namespace.
else {
int exceptioncode = 0;
CSSNamespace* ns = m_namespaces->namespaceForPrefix(prefix);
if (ns) {
Q_ASSERT(m_doc != 0);
// Look up the id for this namespace URI.
Q_UINT16 nsid = m_doc->getId(NodeImpl::NamespaceId, 0, 0, ns->uri().implementation(), false, false, &exceptioncode);
id = makeId(nsid, localNamePart(id));
}
}
}
bool CSSStyleSheetImpl::parseString(const DOMString &string, bool strict)
{
#ifdef CSS_STYLESHEET_DEBUG
kdDebug( 6080 ) << "parsing sheet, len=" << string.length() << ", sheet is " << string.string() << endl;
#endif
strictParsing = strict;
CSSParser p( strict );
p.parseSheet( this, string );
return true;
}
bool CSSStyleSheetImpl::isLoading() const
{
StyleBaseImpl *rule;
for ( rule = m_lstChildren->first(); rule != 0; rule = m_lstChildren->next() )
{
if(rule->isImportRule())
{
CSSImportRuleImpl *import = static_cast<CSSImportRuleImpl *>(rule);
#ifdef CSS_STYLESHEET_DEBUG
kdDebug( 6080 ) << "found import" << endl;
#endif
if(import->isLoading())
{
#ifdef CSS_STYLESHEET_DEBUG
kdDebug( 6080 ) << "--> not loaded" << endl;
#endif
return true;
}
}
}
return false;
}
void CSSStyleSheetImpl::checkLoaded() const
{
if(isLoading()) return;
if(m_parent) m_parent->checkLoaded();
if(m_parentNode) m_parentNode->sheetLoaded();
}
void CSSStyleSheetImpl::setNonCSSHints()
{
StyleBaseImpl *rule = m_lstChildren->first();
while(rule) {
if(rule->isStyleRule()) {
static_cast<CSSStyleRuleImpl *>(rule)->setNonCSSHints();
}
rule = m_lstChildren->next();
}
}
// ---------------------------------------------------------------------------
StyleSheetListImpl::~StyleSheetListImpl()
{
for ( QPtrListIterator<StyleSheetImpl> it ( styleSheets ); it.current(); ++it )
it.current()->deref();
}
void StyleSheetListImpl::add( StyleSheetImpl* s )
{
if ( !styleSheets.containsRef( s ) ) {
s->ref();
styleSheets.append( s );
}
}
void StyleSheetListImpl::remove( StyleSheetImpl* s )
{
if ( styleSheets.removeRef( s ) )
s->deref();
}
unsigned long StyleSheetListImpl::length() const
{
// hack so implicit BODY stylesheets don't get counted here
unsigned long l = 0;
QPtrListIterator<StyleSheetImpl> it(styleSheets);
for (; it.current(); ++it) {
if (!it.current()->isCSSStyleSheet() || !static_cast<CSSStyleSheetImpl*>(it.current())->implicit())
++l;
}
return l;
}
StyleSheetImpl *StyleSheetListImpl::item ( unsigned long index )
{
unsigned long l = 0;
QPtrListIterator<StyleSheetImpl> it(styleSheets);
for (; it.current(); ++it) {
if (!it.current()->isCSSStyleSheet() || !static_cast<CSSStyleSheetImpl*>(it.current())->implicit()) {
if (l == index)
return it.current();
++l;
}
}
return 0;
}
// --------------------------------------------------------------------------------------------
MediaListImpl::MediaListImpl( CSSStyleSheetImpl *parentSheet,
const DOMString &media )
: StyleBaseImpl( parentSheet )
{
setMediaText( media );
}
MediaListImpl::MediaListImpl( CSSRuleImpl *parentRule, const DOMString &media )
: StyleBaseImpl(parentRule)
{
setMediaText( media );
}
bool MediaListImpl::contains( const DOMString &medium ) const
{
return m_lstMedia.empty() || m_lstMedia.contains( medium ) ||
m_lstMedia.contains( "all" );
}
CSSStyleSheetImpl *MediaListImpl::parentStyleSheet() const
{
if( m_parent->isCSSStyleSheet() ) return static_cast<CSSStyleSheetImpl *>(m_parent);
return 0;
}
CSSRuleImpl *MediaListImpl::parentRule() const
{
if( m_parent->isRule() ) return static_cast<CSSRuleImpl *>(m_parent);
return 0;
}
void MediaListImpl::deleteMedium( const DOMString &oldMedium )
{
const QValueList<DOMString>::Iterator itEnd = m_lstMedia.end();
for ( QValueList<DOMString>::Iterator it = m_lstMedia.begin(); it != itEnd; ++it ) {
if( (*it) == oldMedium ) {
m_lstMedia.remove( it );
return;
}
}
}
DOM::DOMString MediaListImpl::mediaText() const
{
DOMString text;
const QValueList<DOMString>::ConstIterator itEnd = m_lstMedia.end();
for ( QValueList<DOMString>::ConstIterator it = m_lstMedia.begin(); it != itEnd; ++it ) {
text += *it;
text += ", ";
}
return text;
}
void MediaListImpl::setMediaText(const DOM::DOMString &value)
{
m_lstMedia.clear();
const QString val = value.string();
const QStringList list = QStringList::split( ',', val );
const QStringList::ConstIterator itEnd = list.end();
for ( QStringList::ConstIterator it = list.begin(); it != itEnd; ++it )
{
const DOMString medium = (*it).stripWhiteSpace();
if( !medium.isEmpty() )
m_lstMedia.append( medium );
}
}