org.eclipse.jface.snippets.viewers.Snippet013TableViewerNoMandatoryLabelProvider.java Source code

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Here is the source code for org.eclipse.jface.snippets.viewers.Snippet013TableViewerNoMandatoryLabelProvider.java

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/*******************************************************************************
 * Copyright (c) 2006, 2015 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
 *     Lars Vogel <Lars.Vogel@gmail.com> - Bug 414565
 *******************************************************************************/

package org.eclipse.jface.snippets.viewers;

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.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 usage of none mandatory interfaces of ITableFontProvider and
 * ITableColorProvider
 *
 */
public class Snippet013TableViewerNoMandatoryLabelProvider {

    public class MyModel {
        public int counter;

        public MyModel(int counter) {
            this.counter = counter;
        }

        @Override
        public String toString() {
            return "Item " + this.counter;
        }
    }

    public 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) {
            return "Column " + columnIndex + " => " + 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 Snippet013TableViewerNoMandatoryLabelProvider(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");

        MyModel[] model = createModel();
        v.setInput(model);
        v.getTable().setLinesVisible(true);
        v.getTable().setHeaderVisible(true);
    }

    private MyModel[] createModel() {
        MyModel[] elements = new MyModel[10];

        for (int i = 0; i < 10; i++) {
            elements[i] = new MyModel(i);
        }

        return elements;
    }

    /**
     * @param args
     */
    public static void main(String[] args) {
        Display display = new Display();

        Shell shell = new Shell(display);
        shell.setLayout(new FillLayout());
        new Snippet013TableViewerNoMandatoryLabelProvider(shell);
        shell.open();

        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }

        display.dispose();

    }

}