/*******************************************************************************
* Copyright (c) 2013 Dirk Fauth and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Dirk Fauth <dirk.fauth@gmail.com> - initial API and implementation
*******************************************************************************/
package org.eclipse.nebula.widgets.nattable.examples._300_Data;
import org.eclipse.nebula.widgets.nattable.NatTable;
import org.eclipse.nebula.widgets.nattable.data.IDataProvider;
import org.eclipse.nebula.widgets.nattable.examples.AbstractNatExample;
import org.eclipse.nebula.widgets.nattable.examples.runner.StandaloneNatExampleRunner;
import org.eclipse.nebula.widgets.nattable.layer.DataLayer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
/**
* Example showing how to implement and use a custom IDataProvider.
*
* @author Dirk Fauth
*
*/
public class _301_CustomDataProviderExample extends AbstractNatExample {
public static void main(String[] args) throws Exception {
StandaloneNatExampleRunner.run(600, 400,
new _301_CustomDataProviderExample());
}
@Override
public String getDescription() {
return "This is an example to show how to implement a custom IDataProvider that"
+ " operates on a two-dimensional array of Strings.";
}
@Override
public Control createExampleControl(Composite parent) {
String[][] testData = new String[10][10];
for (int i = 0; i < 10; i++) {
for (int j = 0; j < 10; j++) {
testData[i][j] = "" + i + "/" + j;
}
}
final DataLayer bodyDataLayer = new DataLayer(
new TwoDimensionalArrayDataProvider(testData));
bodyDataLayer.setDefaultColumnWidth(30);
// use different style bits to avoid rendering of inactive scrollbars
// for small table
// Note: The enabling/disabling and showing of the scrollbars is handled
// by the ViewportLayer.
// Without the ViewportLayer the scrollbars will always be visible with
// the default
// style bits of NatTable.
final NatTable natTable = new NatTable(parent, SWT.NO_BACKGROUND
| SWT.NO_REDRAW_RESIZE | SWT.DOUBLE_BUFFERED, bodyDataLayer);
return natTable;
}
/**
* Sample IDataProvider that operates on a two-dimensional array of Strings,
* where the first dimension are the columns and the second dimension the
* rows.
*
* @author Dirk Fauth
*
*/
class TwoDimensionalArrayDataProvider implements IDataProvider {
private String[][] data;
public TwoDimensionalArrayDataProvider(String[][] data) {
this.data = data;
}
@Override
public Object getDataValue(int columnIndex, int rowIndex) {
return this.data[columnIndex][rowIndex];
}
@Override
public void setDataValue(int columnIndex, int rowIndex, Object newValue) {
this.data[columnIndex][rowIndex] = newValue != null ? newValue
.toString() : null;
}
@Override
public int getColumnCount() {
return this.data.length;
}
@Override
public int getRowCount() {
return this.data[0] != null ? this.data[0].length : 0;
}
}
}