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/*******************************************************************************
* Copyright (c) 2006, 2018 Tom Schindl and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Tom Schindl - initial API and implementation
* Jeanderson Candido <http://jeandersonbc.github.io> - Bug 414565
* Lars Vogel <Lars.Vogel@vogella.com> - Bug 475361
*******************************************************************************/
package org.eclipse.jface.snippets.viewers;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import org.eclipse.jface.resource.FontRegistry;
import org.eclipse.jface.viewers.ArrayContentProvider;
import org.eclipse.jface.viewers.ITableColorProvider;
import org.eclipse.jface.viewers.ITableFontProvider;
import org.eclipse.jface.viewers.ITableLabelProvider;
import org.eclipse.jface.viewers.LabelProvider;
import org.eclipse.jface.viewers.TableViewer;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.TableColumn;
/**
* Example how to fill a {@link TableViewer} from the background without
* blocking the UI
*
* @author Tom Schindl <tom.schindl@bestsolution.at>
*
*/
public class Snippet045TableViewerFillFromBackgroundThread {
private static int COUNTER = 0;
public static class MyModel {
public int counter;
public MyModel(int counter) {
this.counter = counter;
}
@Override
public String toString() {
return "Item " + this.counter;
}
}
public static class MyLabelProvider extends LabelProvider implements
ITableLabelProvider, ITableFontProvider, ITableColorProvider {
FontRegistry registry = new FontRegistry();
@Override
public Image getColumnImage(Object element, int columnIndex) {
return null;
}
@Override
public String getColumnText(Object element, int columnIndex) {
MyModel m = (MyModel) element;
if (m.counter == 0) {
return "Column " + columnIndex + " => " + "Initial input";
}
return "Column " + columnIndex + " => thread added " + element;
}
@Override
public Font getFont(Object element, int columnIndex) {
if (((MyModel) element).counter % 2 == 0) {
return registry.getBold(Display.getCurrent().getSystemFont()
.getFontData()[0].getName());
}
return null;
}
@Override
public Color getBackground(Object element, int columnIndex) {
if (((MyModel) element).counter % 2 == 0) {
return Display.getCurrent().getSystemColor(SWT.COLOR_RED);
}
return null;
}
@Override
public Color getForeground(Object element, int columnIndex) {
if (((MyModel) element).counter % 2 == 1) {
return Display.getCurrent().getSystemColor(SWT.COLOR_RED);
}
return null;
}
}
public Snippet045TableViewerFillFromBackgroundThread(final Shell shell) {
final TableViewer v = new TableViewer(shell, SWT.BORDER
| SWT.FULL_SELECTION);
v.setLabelProvider(new MyLabelProvider());
v.setContentProvider(ArrayContentProvider.getInstance());
TableColumn column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Column 1");
column = new TableColumn(v.getTable(), SWT.NONE);
column.setWidth(200);
column.setText("Column 2");
final List<MyModel> model = new ArrayList<>();
model.add(new MyModel(0));
model.add(new MyModel(0));
model.add(new MyModel(0));
v.setInput(model);
v.setComparator(new ViewerComparator() {
@Override
public int compare(Viewer viewer, Object e1, Object e2) {
MyModel m1 = (MyModel) e1;
MyModel m2 = (MyModel) e2;
return m2.counter - m1.counter;
}
});
v.getTable().setLinesVisible(true);
v.getTable().setHeaderVisible(true);
TimerTask task = new TimerTask() {
@Override
public void run() {
shell.getDisplay().syncExec(() -> {
MyModel el = new MyModel(++COUNTER);
v.add(el);
model.add(el);
});
}
};
Timer timer = new Timer(true);
timer.scheduleAtFixedRate(task, 3000, 1000);
}
/**
* @param args
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setLayout(new FillLayout());
new Snippet045TableViewerFillFromBackgroundThread(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch())
display.sleep();
}
display.dispose();
}
}
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