org.eclipse.swt.snippets.Snippet234.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet234.java

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/*******************************************************************************
 * Copyright (c) 2000, 2016 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.snippets;
/*
 * Table example snippet: Fixed first column and horizontal scroll remaining columns
 *
 * For more info on custom-drawing TableItem and TreeItem content see
 * http://www.eclipse.org/articles/article.php?file=Article-CustomDrawingTableAndTreeItems/index.html
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.3
 */

import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class Snippet234 {
    public static void main(String[] args) {
        int rowCount = 40;
        int columnCount = 15;
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 234");
        shell.setLayout(new FillLayout());

        Composite parent = new Composite(shell, SWT.BORDER);
        GridLayout layout = new GridLayout(2, false);
        layout.marginWidth = layout.marginHeight = layout.horizontalSpacing = 0;
        parent.setLayout(layout);
        final Table leftTable = new Table(parent, SWT.MULTI | SWT.FULL_SELECTION);
        leftTable.setLayoutData(new GridData(SWT.LEFT, SWT.FILL, false, true));
        leftTable.setHeaderVisible(true);
        final Table rightTable = new Table(parent, SWT.MULTI | SWT.H_SCROLL | SWT.V_SCROLL | SWT.FULL_SELECTION);
        rightTable.setHeaderVisible(true);
        GridData table2Data = new GridData(SWT.FILL, SWT.FILL, true, true, 1, 2);
        rightTable.setLayoutData(table2Data);
        // Create columns
        TableColumn column1 = new TableColumn(leftTable, SWT.NONE);
        column1.setText("Name");
        column1.setWidth(150);
        for (int i = 0; i < columnCount; i++) {
            TableColumn column = new TableColumn(rightTable, SWT.NONE);
            column.setText("Value " + i);
            column.setWidth(200);
        }
        // Create rows
        for (int i = 0; i < rowCount; i++) {
            TableItem item = new TableItem(leftTable, SWT.NONE);
            item.setText("item " + i);
            item = new TableItem(rightTable, SWT.NONE);
            for (int j = 0; j < columnCount; j++) {
                item.setText(j, "Item " + i + " value @ " + j);
            }
        }
        // Make selection the same in both tables
        leftTable.addListener(SWT.Selection, event -> rightTable.setSelection(leftTable.getSelectionIndices()));
        rightTable.addListener(SWT.Selection, event -> leftTable.setSelection(rightTable.getSelectionIndices()));
        // On Windows, the selection is gray if the table does not have focus.
        // To make both tables appear in focus, draw the selection background here.
        // This part only works on version 3.2 or later.
        Listener eraseListener = event -> {
            event.detail &= ~SWT.HOT;
            if ((event.detail & SWT.SELECTED) != 0) {
                GC gc = event.gc;
                Rectangle rect = event.getBounds();
                gc.setForeground(display.getSystemColor(SWT.COLOR_LIST_SELECTION_TEXT));
                gc.setBackground(display.getSystemColor(SWT.COLOR_LIST_SELECTION));
                gc.fillRectangle(rect);
                event.detail &= ~SWT.SELECTED;
            }
        };

        leftTable.addListener(SWT.EraseItem, eraseListener);
        rightTable.addListener(SWT.EraseItem, eraseListener);
        // Make vertical scrollbars scroll together
        ScrollBar vBarLeft = leftTable.getVerticalBar();
        vBarLeft.addListener(SWT.Selection, event -> rightTable.setTopIndex(leftTable.getTopIndex()));
        ScrollBar vBarRight = rightTable.getVerticalBar();
        vBarRight.addListener(SWT.Selection, event -> leftTable.setTopIndex(rightTable.getTopIndex()));
        // Horizontal bar on second table takes up a little extra space.
        // To keep vertical scroll bars in sink, force table1 to end above
        // horizontal scrollbar
        ScrollBar hBarRight = rightTable.getHorizontalBar();
        Label spacer = new Label(parent, SWT.NONE);
        GridData spacerData = new GridData();
        spacerData.heightHint = hBarRight.getSize().y;
        spacer.setVisible(false);
        parent.setBackground(leftTable.getBackground());

        shell.setSize(600, 400);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}