/*
* JasperReports - Free Java Reporting Library.
* Copyright (C) 2001 - 2009 Jaspersoft Corporation. All rights reserved.
* http://www.jaspersoft.com
*
* Unless you have purchased a commercial license agreement from Jaspersoft,
* the following license terms apply:
*
* This program is part of JasperReports.
*
* JasperReports is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* JasperReports 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.
*
* You should have received a copy of the GNU Lesser General Public License
* along with JasperReports. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Contributors:
* Ryan Johnson - delscovich@users.sourceforge.net
*/
package net.sf.jasperreports.engine.design;
import java.util.ArrayList;
import java.util.List;
import java.util.StringTokenizer;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRExpressionChunk;
import net.sf.jasperreports.engine.base.JRBaseExpression;
import net.sf.jasperreports.engine.design.events.JRChangeEventsSupport;
import net.sf.jasperreports.engine.design.events.JRPropertyChangeSupport;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRDesignExpression.java 3033 2009-08-27 11:46:22Z teodord $
*/
public class JRDesignExpression extends JRBaseExpression implements JRChangeEventsSupport
{
/**
*
*/
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
public static final String PROPERTY_TEXT = "text";
public static final String PROPERTY_VALUE_CLASS_NAME = "valueClassName";
/**
*
*/
protected List chunks = new ArrayList();
/**
*
*/
public JRDesignExpression()
{
super();
regenerateId();
}
/**
*
*/
public void setValueClass(Class clazz)
{
setValueClassName(clazz.getName());
}
/**
*
*/
public void setValueClassName(String className)
{
Object old = this.valueClassName;
valueClassName = className;
valueClass = null;
valueClassRealName = null;
getEventSupport().firePropertyChange(PROPERTY_VALUE_CLASS_NAME, old, this.valueClassName);
}
/**
* FIXMENOW remove me?
*/
public void setId(int id)
{
this.id = id;
}
/**
*
*/
public JRExpressionChunk[] getChunks()
{
JRExpressionChunk[] chunkArray = null;
if (chunks != null && chunks.size() > 0)
{
chunkArray = new JRExpressionChunk[chunks.size()];
chunks.toArray(chunkArray);
}
return chunkArray;
}
/**
* Clears the current list of chunks and adds the passed list of chunks. The reference
* to the list passed is not kept.
*/
public void setChunks(List chunks)
{
this.chunks.clear();
this.chunks.addAll(chunks);
}
/**
*
*/
public void addChunk(JRDesignExpressionChunk chunk)
{
this.chunks.add(chunk);
}
protected void addChunk(byte type, String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(type);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void addTextChunk(String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(JRExpressionChunk.TYPE_TEXT);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void addParameterChunk(String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(JRExpressionChunk.TYPE_PARAMETER);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void addFieldChunk(String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(JRExpressionChunk.TYPE_FIELD);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void addVariableChunk(String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(JRExpressionChunk.TYPE_VARIABLE);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void addResourceChunk(String text)
{
JRDesignExpressionChunk chunk = new JRDesignExpressionChunk();
chunk.setType(JRExpressionChunk.TYPE_RESOURCE);
chunk.setText(text);
this.chunks.add(chunk);
}
/**
*
*/
public void setText(String text)
{
Object old = getText();
chunks.clear();
if (text != null)
{
StringBuffer textChunk = new StringBuffer();
StringTokenizer tkzer = new StringTokenizer(text, "$", true);
int behindDelims = 0;
while (tkzer.hasMoreTokens())
{
String token = tkzer.nextToken();
if (token.equals("$"))
{
if (behindDelims > 0)
{
textChunk.append("$");
}
++behindDelims;
}
else
{
byte chunkType = JRExpressionChunk.TYPE_TEXT;
if (behindDelims > 0)
{
if (token.startsWith("P{"))
{
chunkType = JRExpressionChunk.TYPE_PARAMETER;
}
else if (token.startsWith("F{"))
{
chunkType = JRExpressionChunk.TYPE_FIELD;
}
else if (token.startsWith("V{"))
{
chunkType = JRExpressionChunk.TYPE_VARIABLE;
}
else if (token.startsWith("R{"))
{
chunkType = JRExpressionChunk.TYPE_RESOURCE;
}
}
if (chunkType == JRExpressionChunk.TYPE_TEXT)
{
if (behindDelims > 0)
{
textChunk.append("$");
}
textChunk.append(token);
}
else
{
int end = token.indexOf('}');
if (end > 0)
{
if (behindDelims > 1)
{
textChunk.append(token);
}
else
{
if (textChunk.length() > 0)
{
addTextChunk(textChunk.toString());
}
addChunk(chunkType, token.substring(2, end));
textChunk = new StringBuffer(token.substring(end + 1));
}
}
else
{
if (behindDelims > 0)
{
textChunk.append("$");
}
textChunk.append(token);
}
}
behindDelims = 0;
}
}
if (behindDelims > 0)
{
textChunk.append("$");
}
if (textChunk.length() > 0)
{
this.addTextChunk(textChunk.toString());
}
}
getEventSupport().firePropertyChange(PROPERTY_TEXT, old, text);
}
private transient JRPropertyChangeSupport eventSupport;
public JRPropertyChangeSupport getEventSupport()
{
synchronized (this)
{
if (eventSupport == null)
{
eventSupport = new JRPropertyChangeSupport(this);
}
}
return eventSupport;
}
/**
*
*/
public Object clone()
{
JRDesignExpression clone = (JRDesignExpression)super.clone();
if (chunks != null)
{
clone.chunks = new ArrayList(chunks.size());
for(int i = 0; i < chunks.size(); i++)
{
clone.chunks.add(((JRExpressionChunk)chunks.get(i)).clone());
}
}
return clone;
}
}