/*
* 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 java.util.HashMap;
import org.pentaho.reporting.engine.classic.core.ReportDefinition;
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;
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;
}
}