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The osx x86_64 swt jar as available in the Eclipse 4.6 (Neon) release for OSX. It is suitable for use with jface and other dependencies available from maven central in the org.eclipse.scout.sdk.deps group. The sources is copied from swt-4.6-cocoa-macosx-x86_64.zip from http://download.eclipse.org/eclipse/downloads/drops4/R-4.6-201606061100/ and javadoc is generated from sources.

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/*******************************************************************************
 * Copyright (c) 2010 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.accessibility;

import org.eclipse.swt.internal.cocoa.*;

/**
 * This class is used to describe a table header for objects that have an accessible
 * role of ACC.ROLE_TABLE, but aren't implemented like NSTableViews. That means they
 * report back their children as a list of cells in row-major order instead of a list of
 * rows with cells as children of those rows. The assumption is that the first 'row'
 * of cells (cell 0 to cell 'column-count - 1') are the column headers of the table.
 *
 * This class works with the parent control to act as the header section of the table,
 * and reports the cells in the header so that screen readers (VoiceOver, mainly) can
 * identify the column of the cell that the VoiceOver cursor is reading.
 */
class AccessibleTableHeader extends Accessible {

	public AccessibleTableHeader(Accessible accessible, int childID) {
		super(accessible);
		index = childID;

		addAccessibleControlListener(new AccessibleControlAdapter() {
			@Override
			public void getChildren(AccessibleControlEvent e) {
				int validColumnCount = Math.max (1, parent.getColumnCount());
				Accessible[] children = new Accessible[validColumnCount];
				AccessibleControlEvent event = new AccessibleControlEvent(this);

				for (int i = 0; i < validColumnCount; i++) {
					event.childID = i;
					event.detail = ACC.CHILDID_CHILD_AT_INDEX;

					for (int j = 0; j < parent.accessibleControlListeners.size(); j++) {
						AccessibleControlListener listener = parent.accessibleControlListeners.get(j);
						listener.getChild(event);
					}

					event.accessible.parent = AccessibleTableHeader.this;
					children[i] = event.accessible;
				}
				e.children = children;
			}
			@Override
			public void getChildCount(AccessibleControlEvent e) {
				e.detail = Math.max (1, parent.getColumnCount());
			}
			@Override
			public void getLocation(AccessibleControlEvent e) {
				int validColumnCount = Math.max (1, parent.getColumnCount());
				Accessible[] children = new Accessible[validColumnCount];
				AccessibleControlEvent event = new AccessibleControlEvent(this);

				for (int i = 0; i < validColumnCount; i++) {
					event.childID = i;
					event.detail = ACC.CHILDID_CHILD_AT_INDEX;

					for (int j = 0; j < parent.accessibleControlListeners.size(); j++) {
						AccessibleControlListener listener = parent.accessibleControlListeners.get(j);
						listener.getChild(event);
					}

					event.accessible.parent = AccessibleTableHeader.this;
					children[i] = event.accessible;
				}

				// Ask first child for position.
				NSValue positionObj = (NSValue)children[0].getPositionAttribute(ACC.CHILDID_SELF);
				NSPoint position = positionObj.pointValue();

				// Ask all children for size.
				int height = 0;
				int width = 0;
				for (int j = 0; j < children.length; j++) {
					NSValue sizeObj = (NSValue)children[j].getSizeAttribute(ACC.CHILDID_SELF);
					NSSize size = sizeObj.sizeValue();
					if (size.height > height) height = (int) size.height;
					width += size.width;
				}
				e.x = (int) position.x;
				// Flip y coordinate for Cocoa.
				NSArray screens = NSScreen.screens();
				NSScreen screen = new NSScreen(screens.objectAtIndex(0));
				NSRect frame = screen.frame();
				e.y = (int) (frame.height - position.y - height);
				e.width = width;
				e.height = height;
			}

			@Override
			public void getRole(AccessibleControlEvent e) {
				e.detail = ACC.ROLE_TABLECOLUMNHEADER;
			}
		});
	}

}