Demonstrates the SWT.VIRTUAL style : Table « SWT JFace Eclipse « Java

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Java » SWT JFace Eclipse » TableScreenshots 
Demonstrates the SWT.VIRTUAL style
Demonstrates the SWT.VIRTUAL style


//Send questions, comments, bug reports, etc. to the authors:

//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)

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

/**
 * This class demonstrates the SWT.VIRTUAL style
 */
public class VirtualTable {
  private String[] items;

  /**
   * Runs the application
   */
  public void run() {
    // Create the data for the table
    items = new String[5000];
    for (int i = 0, n = items.length; i < n; i++) {
      items[i"I am item number " + i;
    }
    
    // Normal SWT stuff
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("Virtual Table");
    createContents(shell);
    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();
  }
  
  /**
   * Creates the shell's contents
   @param shell the shell
   */
  private void createContents(Shell shell) {
    shell.setLayout(new FillLayout());
    
    // Create a table and column
    final Table table = new Table(shell, SWT.VIRTUAL);
    table.setLinesVisible(true);
    table.setHeaderVisible(true);
    TableColumn tc = new TableColumn(table, SWT.NONE);
    tc.setText("Virtual Value");
    tc.setWidth(400);

    // Tell the table how many items it has
    table.setItemCount(items.length);
    
    // Provide the callback handler--this handler
    // is invoked when the table needs new rows
    table.addListener(SWT.SetData, new Listener() {
      public void handleEvent(Event event) {
        TableItem item = (TableItemevent.item;
        item.setText(items[table.indexOf(item)]);
      }
    });
  }

  /**
   * The application entry point
   @param args the command line arguments
   */
  public static void main(String[] args) {
    new VirtualTable().run();
  }
}


           
       
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