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The source code/******************************************************************************* * Copyright (c) 2006 Tom Schindl 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: * Tom Schindl - initial API and implementation *******************************************************************************/ 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.IStructuredContentProvider; 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; private class MyContentProvider implements IStructuredContentProvider { /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object) */ public Object[] getElements(Object inputElement) { return ((List) inputElement).toArray(); } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IContentProvider#dispose() */ public void dispose() { } /* * (non-Javadoc) * * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, * java.lang.Object, java.lang.Object) */ public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { } } public class MyModel { public int counter; public MyModel(int counter) { this.counter = counter; } public String toString() { return "Item " + this.counter; } } public class MyLabelProvider extends LabelProvider implements ITableLabelProvider, ITableFontProvider, ITableColorProvider { FontRegistry registry = new FontRegistry(); public Image getColumnImage(Object element, int columnIndex) { return null; } public String getColumnText(Object element, int columnIndex) { return "Column " + columnIndex + " => " + element.toString(); } public Font getFont(Object element, int columnIndex) { if (((MyModel) element).counter % 2 == 0) { return registry.getBold(Display.getCurrent().getSystemFont() .getFontData()[0].getName()); } return null; } public Color getBackground(Object element, int columnIndex) { if (((MyModel) element).counter % 2 == 0) { return Display.getCurrent().getSystemColor(SWT.COLOR_RED); } return null; } 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(new MyContentProvider()); 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 ArrayList model = new ArrayList(); v.setInput(model); v.setComparator(new ViewerComparator() { 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() { public void run() { shell.getDisplay().syncExec(new Runnable() { public void run() { MyModel el = new MyModel(++COUNTER); v.add(el); model.add(el); } }); } }; Timer timer = new Timer(true); timer.scheduleAtFixedRate(task, 1000, 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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