Fork of https://gist.github.com/rherrmann/b1a2a633cd4c9b607fe7 without resize listener

VerticallyScrolledForm.java

// Original: https://gist.github.com/rherrmann/b1a2a633cd4c9b607fe7
// package com.codeaffine.scrolledcomposite;

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.ScrolledComposite;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * Shows an expanding ScrolledComposite that scrolls only vertically.
 */
public class VerticallyScrolledForm {
  
  public static void main( String[] args ) {
    new VerticallyScrolledForm().run();
  }
  
  private Shell shell;
  private ScrolledComposite scrolledComposite;

  void run() {
    createControls();
    layoutControls();
    openShell();
    runEventLoop();
  }

  private void createControls() {
    shell = new Shell( new Display() );
    shell.setText( "Contact Details Form" );
    shell.addListener( SWT.Dispose, event -> event.display.dispose() );
    scrolledComposite = new ScrolledComposite( shell, SWT.V_SCROLL );
    Composite parent = createForm();
    scrolledComposite.setContent( parent );
    scrolledComposite.setExpandVertical( true );
    scrolledComposite.setExpandHorizontal( true );
  }

  private void layoutControls() {
    shell.setLayout( new GridLayout( 1, false ) );
    int contentHeight = scrolledComposite.getContent().computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
    scrolledComposite.setMinHeight( contentHeight );

    GridData gridData = new GridData( SWT.FILL, SWT.FILL, true, true );
    gridData.heightHint = computePreferredHeight();
    scrolledComposite.setLayoutData( gridData );
  }

  private void openShell() {
    shell.pack();
    shell.open();
  }

  private void runEventLoop() {
    while( !shell.isDisposed() ) {
      if( !shell.getDisplay().readAndDispatch() ) {
        shell.getDisplay().sleep();
      }
    }
  }

  private int computePreferredHeight() {
    int numberOfLines = 10;
    Composite parent = (Composite) scrolledComposite.getContent();
    int contentHeight = parent.computeSize(SWT.DEFAULT, SWT.DEFAULT).y;
    return contentHeight * numberOfLines / (parent.getChildren().length / 2);
  }

  private Composite createForm() {
    Composite result = new Composite( scrolledComposite, SWT.NONE );
    result.setLayout( new GridLayout( 2, false ) );
    createField( result, "Title" );
    createField( result, "Salutation" );
    createField( result, "First name" );
    createField( result, "Middle name" );
    createField( result, "Last name" );
    createField( result, "Maiden name" );
    createField( result, "Street" );
    createField( result, "Street supplement" );
    createField( result, "PO Box" );
    createField( result, "Zip code" );
    createField( result, "City" );
    createField( result, "State" );
    createField( result, "Country" );
    createField( result, "Private Phone" );
    createField( result, "Mobile Phone" );
    createField( result, "Email address" );
    createField( result, "Web site" );
    return result;
  }

  private static void createField( Composite parent, String labelText ) {
    Label label = new Label( parent, SWT.NONE );
    label.setText( labelText );
    Text text = new Text( parent, SWT.BORDER );
    text.setLayoutData( new GridData( SWT.FILL, SWT.CENTER, true, false ) );
  }
}