/*
* 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/>.
*/
package net.sf.jasperreports.engine.fill;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import net.sf.jasperreports.engine.JRChild;
import net.sf.jasperreports.engine.JRElement;
import net.sf.jasperreports.engine.JRElementGroup;
import net.sf.jasperreports.engine.JRVisitor;
/**
* @author Teodor Danciu (teodord@users.sourceforge.net)
* @version $Id: JRFillElementGroup.java 3940 2010-08-20 10:35:15Z teodord $
*/
public class JRFillElementGroup implements JRElementGroup, JRFillCloneable
{
/**
*
*/
protected List children = new ArrayList();
protected JRElementGroup elementGroup;
/**
*
*/
protected JRFillElement[] elements;
/**
*
*/
private JRElement topElementInGroup;
private JRElement bottomElementInGroup;
private int stretchHeightDiff;
/**
*
*/
protected JRFillElementGroup(
JRElementGroup elementGrp,
JRFillObjectFactory factory
)
{
if (elementGrp != null)
{
factory.put(elementGrp, this);
/* */
List list = elementGrp.getChildren();
if (list != null && list.size() > 0)
{
for(int i = 0; i < list.size(); i++)
{
JRChild child = (JRChild)list.get(i);
child = (JRChild)factory.getVisitResult(child);
children.add(child);
}
}
/* */
getElements();
elementGroup = (JRElementGroup)factory.getVisitResult(elementGrp.getElementGroup());
}
}
protected JRFillElementGroup(JRFillElementGroup elementGrp, JRFillCloneFactory factory)
{
factory.put(elementGrp, this);
List list = elementGrp.getChildren();
if (list != null)
{
for (int i = 0; i < list.size(); i++)
{
JRFillCloneable child = (JRFillCloneable) list.get(i);
JRFillCloneable clone = child.createClone(factory);
children.add(clone);
}
}
getElements();
elementGroup = (JRFillElementGroup) factory.getClone((JRFillElementGroup) elementGrp.getElementGroup());
}
/**
*
*/
public List getChildren()
{
return this.children;
}
/**
*
*/
public JRElementGroup getElementGroup()
{
return this.elementGroup;
}
/**
*
*/
public JRElement[] getElements()
{
if (this.elements == null)
{
if (this.children != null)
{
List allElements = new ArrayList();
Object child = null;
JRElement[] childElementArray = null;
for(int i = 0; i < this.children.size(); i++)
{
child = this.children.get(i);
if (child instanceof JRFillElement)
{
allElements.add(child);
}
else if (child instanceof JRFillElementGroup)
{
childElementArray = ((JRFillElementGroup)child).getElements();
if (childElementArray != null)
{
allElements.addAll( Arrays.asList(childElementArray) );
}
}
}
this.elements = new JRFillElement[allElements.size()];
allElements.toArray(this.elements);
}
}
return this.elements;
}
/**
*
*/
public JRElement getElementByKey(String key)
{
return null;
}
/**
*
*/
protected void reset()
{
topElementInGroup = null;
}
/**
*
*/
protected int getStretchHeightDiff()
{
if (topElementInGroup == null)
{
stretchHeightDiff = 0;
setTopBottomElements();
JRElement[] allElements = getElements();
if (allElements != null && allElements.length > 0)
{
JRFillElement topElem = null;
JRFillElement bottomElem = null;
for(int i = 0; i < allElements.length; i++)
{
JRFillElement element = (JRFillElement)allElements[i];
//if (element != this && element.isToPrint())
if (element.isToPrint())
{
if (
topElem == null ||
(
element.getRelativeY() + element.getStretchHeight() <
topElem.getRelativeY() + topElem.getStretchHeight())
)
{
topElem = element;
}
if (
bottomElem == null ||
(
element.getRelativeY() + element.getStretchHeight() >
bottomElem.getRelativeY() + bottomElem.getStretchHeight())
)
{
bottomElem = element;
}
}
}
if (topElem != null)
{
stretchHeightDiff =
bottomElem.getRelativeY() + bottomElem.getStretchHeight() - topElem.getRelativeY() -
(bottomElementInGroup.getY() + bottomElementInGroup.getHeight() - topElementInGroup.getY());
}
if (stretchHeightDiff < 0)
{
stretchHeightDiff = 0;
}
}
}
return stretchHeightDiff;
}
/**
*
*/
private void setTopBottomElements()
{
JRElement[] allElements = getElements();
if (allElements != null && allElements.length > 0)
{
for(int i = 0; i < allElements.length; i++)
{
if (
topElementInGroup == null ||
(
allElements[i].getY() + allElements[i].getHeight() <
topElementInGroup.getY() + topElementInGroup.getHeight())
)
{
topElementInGroup = allElements[i];
}
if (
bottomElementInGroup == null ||
(
allElements[i].getY() + allElements[i].getHeight() >
bottomElementInGroup.getY() + bottomElementInGroup.getHeight())
)
{
bottomElementInGroup = allElements[i];
}
}
}
}
/**
*
*/
public void visit(JRVisitor visitor)
{
visitor.visitElementGroup(this);
}
public JRFillCloneable createClone(JRFillCloneFactory factory)
{
return new JRFillElementGroup(this, factory);
}
/**
*
*/
public Object clone()
{
throw new UnsupportedOperationException();
}
/**
*
*/
public Object clone(JRElementGroup parentGroup)
{
throw new UnsupportedOperationException();
}
}