/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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 Lesser General Public License for more details.
*
* Copyright (c) 2001 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.parser.ext.readhandlers;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.PropertyAttributes;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.ReportParserUtil;
import org.pentaho.reporting.engine.classic.core.style.ElementStyleKeys;
import org.pentaho.reporting.engine.classic.core.style.ElementStyleSheet;
import org.pentaho.reporting.libraries.xmlns.parser.IgnoreAnyChildReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
import org.pentaho.reporting.libraries.xmlns.parser.RootXmlReadHandler;
import org.pentaho.reporting.libraries.xmlns.parser.XmlReadHandler;
import org.xml.sax.SAXException;
import java.util.HashMap;
public class StyleReadHandler extends CompoundObjectReadHandler {
private HashMap<String, ElementStyleSheet> styleSheetCollection;
private ElementStyleSheet styleSheet;
private boolean createStyle;
public StyleReadHandler() {
this( null );
}
public StyleReadHandler( final ElementStyleSheet styleSheet ) {
super( new ElementStyleSheetObjectDescription() );
this.styleSheet = styleSheet;
this.createStyle = ( styleSheet == null );
}
/**
* Initialises the handler.
*
* @param rootHandler
* the root handler.
* @param tagName
* the tag name.
*/
public void init( final RootXmlReadHandler rootHandler, final String uri, final String tagName ) throws SAXException {
super.init( rootHandler, uri, tagName );
styleSheetCollection =
(HashMap<String, ElementStyleSheet>) rootHandler.getHelperObject( ReportParserUtil.HELPER_OBJ_LEGACY_STYLES );
}
/**
* Starts parsing.
*
* @param attrs
* the attributes.
* @throws org.xml.sax.SAXException
* if there is a parsing error.
*/
protected void startParsing( final PropertyAttributes attrs ) throws SAXException {
if ( createStyle ) {
final String name = attrs.getValue( getUri(), "name" );
if ( name == null ) {
throw new ParseException( "Required attribute 'name' is missing.", getLocator() );
}
styleSheet = new ElementStyleSheet();
styleSheetCollection.put( name, styleSheet );
}
final ElementStyleSheetObjectDescription objectDescription =
(ElementStyleSheetObjectDescription) getObjectDescription();
objectDescription.init( getRootHandler(), styleSheet );
}
/**
* Returns the handler for a child element.
*
* @param tagName
* the tag name.
* @param atts
* the attributes.
* @return the handler or null, if the tagname is invalid.
* @throws org.xml.sax.SAXException
* if there is a parsing error.
*/
protected XmlReadHandler getHandlerForChild( final String uri, final String tagName, final PropertyAttributes atts )
throws SAXException {
if ( isSameNamespace( uri ) == false ) {
return null;
}
if ( "extends".equals( tagName ) ) {
return new StyleExtendsReadHandler( styleSheetCollection, styleSheet );
}
if ( "basic-key".equals( tagName ) ) {
final String name = atts.getValue( getUri(), "name" );
if ( ElementStyleKeys.isLegacyKey( name ) ) {
return new IgnoreAnyChildReadHandler();
}
return handleBasicObject( atts );
} else if ( "compound-key".equals( tagName ) ) {
final String name = atts.getValue( getUri(), "name" );
if ( ElementStyleKeys.isLegacyKey( name ) ) {
return new IgnoreAnyChildReadHandler();
}
return handleCompoundObject( atts );
}
return null;
}
/**
* Returns the object for this element or null, if this element does not create an object.
*
* @return the object.
*/
public Object getObject() {
return styleSheet;
}
}