org.eclipse.swt.snippets.Snippet311.java Source code

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Here is the source code for org.eclipse.swt.snippets.Snippet311.java

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/*******************************************************************************
 * Copyright (c) 2009, 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: show a menu in a table header
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 *
 * @since 3.5
 */

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

public class Snippet311 {

    static String[][] files = { { "ver.txt", "1 KB", "Text Document", "28/09/2005 9:57 AM", "admin", },
            { "Thumbs.db", "76 KB", "Data Base file", "13/03/2006 3:56 PM", "john", },
            { "daddy.bmp", "148 MB", "Bitmap", "27/10/2008 1:34 PM", "bill", },
            { "io.sys", "48 KB", "File System", "16/12/2008 6:14 AM", "admin", },
            { "Programs", "0 KB", "File Folder", "04/02/2009 12:18 PM", "anne", },
            { "test.rnd", "55 MB", "RND File", "19/02/2009 5:49 PM", "john", },
            { "arial.ttf", "94 KB", "True Type Font", "25/08/2008 1:25 PM", "john", }, };

    static void createMenuItem(Menu parent, final TableColumn column) {
        final MenuItem itemName = new MenuItem(parent, SWT.CHECK);
        itemName.setText(column.getText());
        itemName.setSelection(column.getResizable());
        itemName.addListener(SWT.Selection, event -> {
            if (itemName.getSelection()) {
                column.setWidth(150);
                column.setResizable(true);
            } else {
                column.setWidth(0);
                column.setResizable(false);
            }
        });
    }

    public static void main(String[] args) {
        final Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Snippet 311");
        shell.setLayout(new FillLayout());

        final Table table = new Table(shell, SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER);
        table.setHeaderVisible(true);
        final Menu headerMenu = new Menu(shell, SWT.POP_UP);
        final TableColumn columnName = new TableColumn(table, SWT.NONE);
        columnName.setText("Name");
        columnName.setWidth(150);
        createMenuItem(headerMenu, columnName);
        final TableColumn columnSize = new TableColumn(table, SWT.NONE);
        columnSize.setText("Size");
        columnSize.setWidth(150);
        createMenuItem(headerMenu, columnSize);
        final TableColumn columnType = new TableColumn(table, SWT.NONE);
        columnType.setText("Type");
        columnType.setWidth(150);
        createMenuItem(headerMenu, columnType);
        final TableColumn columnDate = new TableColumn(table, SWT.NONE);
        columnDate.setText("Date");
        columnDate.setWidth(150);
        createMenuItem(headerMenu, columnDate);
        final TableColumn columnOwner = new TableColumn(table, SWT.NONE);
        columnOwner.setText("Owner");
        columnOwner.setWidth(0);
        columnOwner.setResizable(false);
        createMenuItem(headerMenu, columnOwner);

        for (int i = 0; i < files.length; i++) {
            TableItem item = new TableItem(table, SWT.NONE);
            item.setText(files[i]);
        }

        final Menu tableMenu = new Menu(shell, SWT.POP_UP);
        MenuItem item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Open");
        item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Open With");
        new MenuItem(tableMenu, SWT.SEPARATOR);
        item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Cut");
        item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Copy");
        item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Paste");
        new MenuItem(tableMenu, SWT.SEPARATOR);
        item = new MenuItem(tableMenu, SWT.PUSH);
        item.setText("Delete");

        table.addListener(SWT.MenuDetect, event -> {
            Point pt = display.map(null, table, new Point(event.x, event.y));
            Rectangle clientArea = table.getClientArea();
            boolean header = clientArea.y <= pt.y && pt.y < (clientArea.y + table.getHeaderHeight());
            table.setMenu(header ? headerMenu : tableMenu);
        });

        /* IMPORTANT: Dispose the menus (only the current menu, set with setMenu(), will be automatically disposed) */
        table.addListener(SWT.Dispose, event -> {
            headerMenu.dispose();
            tableMenu.dispose();
        });

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