/*
* 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 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.layout.output;
import java.util.ArrayList;
import org.pentaho.reporting.engine.classic.core.layout.model.BlockRenderBox;
import org.pentaho.reporting.engine.classic.core.layout.model.CanvasRenderBox;
import org.pentaho.reporting.engine.classic.core.layout.model.InlineRenderBox;
import org.pentaho.reporting.engine.classic.core.layout.model.LogicalPageBox;
import org.pentaho.reporting.engine.classic.core.layout.model.RenderBox;
import org.pentaho.reporting.engine.classic.core.layout.model.RenderNode;
import org.pentaho.reporting.engine.classic.core.layout.model.RenderableReplacedContentBox;
import org.pentaho.reporting.engine.classic.core.layout.model.ParagraphRenderBox;
import org.pentaho.reporting.engine.classic.core.layout.process.IterateStructuralProcessStep;
import org.pentaho.reporting.engine.classic.core.util.geom.StrictBounds;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class CollectSelectedNodesStep extends IterateStructuralProcessStep
{
private static final RenderNode[] EMPTY = new RenderNode[0];
private ArrayList resultList;
private StrictBounds bounds;
private StrictBounds nodebounds;
private String namespace;
private String name;
private boolean strictSelection;
public CollectSelectedNodesStep()
{
resultList = new ArrayList();
strictSelection = true;
nodebounds = new StrictBounds();
}
public boolean isStrictSelection()
{
return strictSelection;
}
public void setStrictSelection(final boolean strictSelection)
{
this.strictSelection = strictSelection;
}
public RenderNode[] getNodesAt(final LogicalPageBox logicalPageBox,
final StrictBounds bounds,
final String namespace,
final String name)
{
if (logicalPageBox == null)
{
throw new NullPointerException();
}
if (bounds == null)
{
throw new NullPointerException();
}
if (ObjectUtilities.equal(bounds, this.bounds) &&
ObjectUtilities.equal(namespace, this.namespace) &&
ObjectUtilities.equal(name, this.name))
{
if (resultList.isEmpty())
{
return CollectSelectedNodesStep.EMPTY;
}
return (RenderNode[]) resultList.toArray(new RenderNode[resultList.size()]);
}
this.namespace = namespace;
this.name = name;
this.bounds = bounds;
this.resultList.clear();
startProcessing(logicalPageBox);
if (resultList.isEmpty())
{
return CollectSelectedNodesStep.EMPTY;
}
return (RenderNode[]) resultList.toArray(new RenderNode[resultList.size()]);
}
protected boolean startCanvasBox(final CanvasRenderBox box)
{
return handleNode(box);
}
protected void processOtherNode(final RenderNode node)
{
handleNode(node);
}
protected boolean startBlockBox(final BlockRenderBox box)
{
return handleNode(box);
}
protected boolean startInlineBox(final InlineRenderBox box)
{
return handleNode(box);
}
protected void processRenderableContent(final RenderableReplacedContentBox box)
{
handleNode(box);
}
private boolean handleNode(final RenderNode box)
{
if (strictSelection)
{
if (box.isBoxVisible(bounds) == false)
{
return false;
}
}
else
{
nodebounds.setRect(box.getX(), box.getY(), box.getWidth(), box.getHeight());
if (StrictBounds.intersects(nodebounds, bounds) == false)
{
return false;
}
}
if (name != null && namespace != null)
{
final Object attribute = box.getAttributes().getAttribute(namespace, name);
if (attribute != null)
{
this.resultList.add(box);
}
}
else
{
this.resultList.add(box);
}
return true;
}
protected boolean startOtherBox(final RenderBox box)
{
return handleNode(box);
}
protected boolean startRowBox(final RenderBox box)
{
return handleNode(box);
}
protected void processParagraphChilds(final ParagraphRenderBox box)
{
processBoxChilds(box);
}
}