Create a table with 1,000,000 items (lazy, page size 64) : Table « SWT « Java Tutorial






  1. Java Tutorial
  2. SWT
  3. Table
Create a table with 1,000,000 items (lazy, page size 64)
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
//package org.eclipse.swt.snippets;
/*
 * Virtual Table example snippet: create a table with 1,000,000 items (lazy, page size 64)
 *
 * For a list of all SWT example snippets see
 * http://www.eclipse.org/swt/snippets/
 * 
 * @since 3.0
 */
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.RowData;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableItem;

public class TableWithPageSize {

  static final int PAGE_SIZE = 64;

  static final int COUNT = 100000;

  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    shell.setLayout(new RowLayout(SWT.VERTICAL));
    final Table table = new Table(shell, SWT.VIRTUAL | SWT.BORDER);
    table.addListener(SWT.SetData, new Listener() {
      public void handleEvent(Event event) {
        TableItem item = (TableItem) event.item;
        int index = table.indexOf(item);
        int start = index / PAGE_SIZE * PAGE_SIZE;
        int end = Math.min(start + PAGE_SIZE, table.getItemCount());
        for (int i = start; i < end; i++) {
          item = table.getItem(i);
          item.setText("Item " + i);
        }
      }
    });
    table.setLayoutData(new RowData(200, 200));
    long t1 = System.currentTimeMillis();
    table.setItemCount(COUNT);
    long t2 = System.currentTimeMillis();
    System.out.println("Items: " + COUNT + ", Time: " + (t2 - t1) + " (ms) [page=" + PAGE_SIZE
        + "]");
    shell.layout();
    shell.pack();
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }
}








17.49.Table
17.49.1.Tables
17.49.2.Create a table (lazy)Create a table (lazy)
17.49.3.new Table(shell, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION| SWT.CHECK)new Table(shell, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION| SWT.CHECK)
17.49.4.Table Styles
17.49.5.Create a table with 1,000,000 items (lazy)Create a table with 1,000,000 items (lazy)
17.49.6.Create a virtual table and add 1000 entries to it every 500 msCreate a virtual table and add 1000 entries to it every 500 ms
17.49.7.Create a table with columns, headers, linesCreate a table with columns, headers, lines
17.49.8.Create a table without columns and headersCreate a table without columns and headers
17.49.9.Create fake tool tips for items in a tableCreate fake tool tips for items in a table
17.49.10.Set table selection to scroll a tableSet table selection to scroll a table
17.49.11.Set top index to scroll a tableSet top index to scroll a table
17.49.12.Resize columns as table resizes
17.49.13.Set table selected item and remove it from tableSet table selected item and remove it from table
17.49.14.Get TableItem Index in a TableGet TableItem Index in a Table
17.49.15.Insert TableItem by IndexInsert TableItem by Index
17.49.16.Table With CheckBox CellTable With CheckBox Cell
17.49.17.Fill a table in the ThreadFill a table in the Thread
17.49.18.Create a table with 1,000,000 items (lazy, page size 64)Create a table with 1,000,000 items (lazy, page size 64)