/*
* $Id: SizeSequenceMapper.java,v 1.2 2007/06/14 10:06:40 kleopatra Exp $
*
* Copyright 2004 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library 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 2.1 of the License, or (at your option) any later version.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx.decorator;
import java.util.Arrays;
import javax.swing.SizeSequence;
/**
* @author Jeanette Winzenburg
*/
public class SizeSequenceMapper {
private SizeSequence viewSizes;
private SizeSequence modelSizes;
private FilterPipeline pipeline;
private PipelineListener pipelineListener;
private int defaultHeight;
public SizeSequenceMapper() {
}
public SizeSequenceMapper(FilterPipeline pipeline) {
this();
setFilters(pipeline);
}
/**
*
* @param pipeline
* @param selection
*/
public SizeSequenceMapper(FilterPipeline pipeline, SizeSequence selection, int defaultHeight) {
this();
setViewSizeSequence(selection, defaultHeight);
setFilters(pipeline);
}
public void setViewSizeSequence(SizeSequence selection, int height) {
SizeSequence old = this.viewSizes;
if (old != null) {
clearModelSizes();
}
this.viewSizes = selection;
this.defaultHeight = height;
mapTowardsModel();
}
public SizeSequence getViewSizeSequence() {
return viewSizes;
}
public void setFilters(FilterPipeline pipeline) {
FilterPipeline old = this.pipeline;
if (old != null) {
old.removePipelineListener(pipelineListener);
}
this.pipeline = pipeline;
if (pipeline != null) {
pipeline.addPipelineListener(getPipelineListener());
}
restoreSelection();
}
public void clearModelSizes() {
modelSizes = null;
}
public void insertIndexInterval(int start, int length, int value) {
if (modelSizes == null) return;
modelSizes.insertEntries(start, length, value);
}
public void removeIndexInterval(int start, int length) {
if (modelSizes == null) return;
modelSizes.removeEntries(start, length);
}
public void restoreSelection() {
if (viewSizes == null) return;
int[] sizes = new int[getOutputSize()];
Arrays.fill(sizes, defaultHeight);
viewSizes.setSizes(sizes);
// viewSizes.setSizes(new int[0]);
// viewSizes.insertEntries(0, getOutputSize(), defaultHeight);
int[] selected = modelSizes.getSizes();
for (int i = 0; i < selected.length; i++) {
int index = convertToView(i);
// index might be -1, ignore.
if (index >= 0) {
viewSizes.setSize(index, selected[i]);
}
}
}
private void mapTowardsModel() {
if (viewSizes == null) return;
modelSizes = new SizeSequence(getInputSize(), defaultHeight);
int[] selected = viewSizes.getSizes();
for (int i = 0; i < selected.length; i++) {
int modelIndex = convertToModel(i);
modelSizes.setSize(modelIndex, selected[i]);
}
}
private int getInputSize() {
return pipeline != null ? pipeline.getInputSize() : 0;
}
private int getOutputSize() {
return pipeline != null ? pipeline.getOutputSize() : 0;
}
private int convertToModel(int index) {
return pipeline != null ? pipeline.convertRowIndexToModel(index) : index;
}
private int convertToView(int index) {
return pipeline != null ? pipeline.convertRowIndexToView(index) : index;
}
protected void updateFromPipelineChanged() {
restoreSelection();
}
private PipelineListener getPipelineListener() {
if (pipelineListener == null) {
pipelineListener = new PipelineListener() {
public void contentsChanged(PipelineEvent e) {
updateFromPipelineChanged();
}
};
}
return pipelineListener;
}
}