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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) 2000, 2015 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.widgets;

import java.util.*;

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

/**
 * Instances of this class represent the "windows"
 * which the desktop or "window manager" is managing.
 * Instances that do not have a parent (that is, they
 * are built using the constructor, which takes a
 * Display as the argument) are described
 * as top level shells. Instances that do have
 * a parent are described as secondary or
 * dialog shells.
 * 
    
 * Instances are always displayed in one of the maximized,
 * minimized or normal states:
 * 
      
 * 
    • 
 * When an instance is marked as maximized, the
 * window manager will typically resize it to fill the
 * entire visible area of the display, and the instance
 * is usually put in a state where it can not be resized
 * (even if it has style RESIZE) until it is
 * no longer maximized.
 * 
    • 
 * When an instance is in the normal state (neither
 * maximized or minimized), its appearance is controlled by
 * the style constants which were specified when it was created
 * and the restrictions of the window manager (see below).
 * 
    • 
 * When an instance has been marked as minimized,
 * its contents (client area) will usually not be visible,
 * and depending on the window manager, it may be
 * "iconified" (that is, replaced on the desktop by a small
 * simplified representation of itself), relocated to a
 * distinguished area of the screen, or hidden. Combinations
 * of these changes are also possible.
 * 
      • 
 * 
    
 * 
    
 * The modality of an instance may be specified using
 * style bits. The modality style bits are used to determine
 * whether input is blocked for other shells on the display.
 * The PRIMARY_MODAL style allows an instance to block
 * input to its parent. The APPLICATION_MODAL style
 * allows an instance to block input to every other shell in the
 * display. The SYSTEM_MODAL style allows an instance
 * to block input to all shells, including shells belonging to
 * different applications.
 * 
    
 * Note: The styles supported by this class are treated
 * as HINTs, since the window manager for the
 * desktop on which the instance is visible has ultimate
 * control over the appearance and behavior of decorations
 * and modality. For example, some window managers only
 * support resizable windows and will always assume the
 * RESIZE style, even if it is not set. In addition, if a
 * modality style is not supported, it is "upgraded" to a
 * more restrictive modality style that is supported. For
 * example, if PRIMARY_MODAL is not supported,
 * it would be upgraded to APPLICATION_MODAL.
 * A modality style may also be "downgraded" to a less
 * restrictive style. For example, most operating systems
 * no longer support SYSTEM_MODAL because
 * it can freeze up the desktop, so this is typically
 * downgraded to APPLICATION_MODAL.
 * 
    
 * 
    Styles:
    
 * 
    BORDER, CLOSE, MIN, MAX, NO_MOVE, NO_TRIM, RESIZE, TITLE, ON_TOP, TOOL, SHEET
    
 * 
    APPLICATION_MODAL, MODELESS, PRIMARY_MODAL, SYSTEM_MODAL
    
 * 
    Events:
    
 * 
    Activate, Close, Deactivate, Deiconify, Iconify
    
 * 
    
 * Class SWT provides two "convenience constants"
 * for the most commonly required style combinations:
 * 
    
 * 
    SHELL_TRIM
    
 * 
    
 * the result of combining the constants which are required
 * to produce a typical application top level shell: (that
 * is, CLOSE | TITLE | MIN | MAX | RESIZE)
 * 
    
 * 
    DIALOG_TRIM
    
 * 
    
 * the result of combining the constants which are required
 * to produce a typical application dialog shell: (that
 * is, TITLE | CLOSE | BORDER)
 * 
    
 * 
    
 * 
    
 * 
    
 * Note: Only one of the styles APPLICATION_MODAL, MODELESS,
 * PRIMARY_MODAL and SYSTEM_MODAL may be specified.
 * 
    
 * IMPORTANT: This class is not intended to be subclassed.
 * 
    
 *
 * @see Decorations
 * @see SWT
 * @see Shell snippets
 * @see SWT Example: ControlExample
 * @see Sample code and further information
 * @noextend This class is not intended to be subclassed by clients.
 */
@SuppressWarnings({"rawtypes", "unchecked"})
public class Shell extends Decorations {
	NSWindow window;
	SWTWindowDelegate windowDelegate;
	long /*int*/ hostWindowClass;
	NSWindow hostWindow;
	long /*int*/ tooltipOwner, tooltipTag, tooltipUserData;
	int glContextCount;
	boolean opened, moved, resized, fullScreen, center, deferFlushing, scrolling, isPopup;
	Control lastActive;
	Rectangle normalBounds;
	boolean keyInputHappened;
	NSRect currentFrame;
	NSRect fullScreenFrame;
	ToolBar toolBar;
	Map windowEmbedCounts;
	MenuItem escMenuItem;

	static int DEFAULT_CLIENT_WIDTH = -1;
	static int DEFAULT_CLIENT_HEIGHT = -1;

/**
 * Constructs a new instance of this class. This is equivalent
 * to calling Shell((Display) null).
 *
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 */
public Shell () {
	this ((Display) null);
}

/**
 * Constructs a new instance of this class given only the style
 * value describing its behavior and appearance. This is equivalent
 * to calling Shell((Display) null, style).
 * 
    
 * The style value is either one of the style constants defined in
 * class SWT which is applicable to instances of this
 * class, or must be built by bitwise OR'ing together
 * (that is, using the int "|" operator) two or more
 * of those SWT style constants. The class description
 * lists the style constants that are applicable to the class.
 * Style bits are also inherited from superclasses.
 * 
    
 *
 * @param style the style of control to construct
 *
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 *
 * @see SWT#BORDER
 * @see SWT#CLOSE
 * @see SWT#MIN
 * @see SWT#MAX
 * @see SWT#RESIZE
 * @see SWT#TITLE
 * @see SWT#TOOL
 * @see SWT#NO_TRIM
 * @see SWT#NO_MOVE
 * @see SWT#SHELL_TRIM
 * @see SWT#DIALOG_TRIM
 * @see SWT#ON_TOP
 * @see SWT#MODELESS
 * @see SWT#PRIMARY_MODAL
 * @see SWT#APPLICATION_MODAL
 * @see SWT#SYSTEM_MODAL
 * @see SWT#SHEET
 */
public Shell (int style) {
	this ((Display) null, style);
}

/**
 * Constructs a new instance of this class given only the display
 * to create it on. It is created with style SWT.SHELL_TRIM.
 * 
    
 * Note: Currently, null can be passed in for the display argument.
 * This has the effect of creating the shell on the currently active
 * display if there is one. If there is no current display, the
 * shell is created on a "default" display. Passing in null as
 * the display argument is not considered to be good coding style,
 * and may not be supported in a future release of SWT.
 * 
    
 *
 * @param display the display to create the shell on
 *
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 */
public Shell (Display display) {
	this (display, SWT.SHELL_TRIM);
}

/**
 * Constructs a new instance of this class given the display
 * to create it on and a style value describing its behavior
 * and appearance.
 * 
    
 * The style value is either one of the style constants defined in
 * class SWT which is applicable to instances of this
 * class, or must be built by bitwise OR'ing together
 * (that is, using the int "|" operator) two or more
 * of those SWT style constants. The class description
 * lists the style constants that are applicable to the class.
 * Style bits are also inherited from superclasses.
 * 
    
 * Note: Currently, null can be passed in for the display argument.
 * This has the effect of creating the shell on the currently active
 * display if there is one. If there is no current display, the
 * shell is created on a "default" display. Passing in null as
 * the display argument is not considered to be good coding style,
 * and may not be supported in a future release of SWT.
 * 
    
 *
 * @param display the display to create the shell on
 * @param style the style of control to construct
 *
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 *
 * @see SWT#BORDER
 * @see SWT#CLOSE
 * @see SWT#MIN
 * @see SWT#MAX
 * @see SWT#RESIZE
 * @see SWT#TITLE
 * @see SWT#TOOL
 * @see SWT#NO_TRIM
 * @see SWT#NO_MOVE
 * @see SWT#SHELL_TRIM
 * @see SWT#DIALOG_TRIM
 * @see SWT#ON_TOP
 * @see SWT#MODELESS
 * @see SWT#PRIMARY_MODAL
 * @see SWT#APPLICATION_MODAL
 * @see SWT#SYSTEM_MODAL
 * @see SWT#SHEET
 */
public Shell (Display display, int style) {
	this (display, null, style, 0, false);
}

Shell (Display display, Shell parent, int style, long /*int*/handle, boolean embedded) {
	super ();
	checkSubclass ();
	if (display == null) display = Display.getCurrent ();
	if (display == null) display = Display.getDefault ();
	if (!display.isValidThread ()) {
		error (SWT.ERROR_THREAD_INVALID_ACCESS);
	}
	if (parent != null && parent.isDisposed ()) {
		error (SWT.ERROR_INVALID_ARGUMENT);
	}
	if (!Display.getSheetEnabled ()) {
		this.center = parent != null && (style & SWT.SHEET) != 0;
	}
	this.style = checkStyle (parent, style);
	this.parent = parent;
	this.display = display;
	if (handle != 0) {
		if (embedded) {
			view = new NSView(handle);
		} else {
			window = new NSWindow(handle);
			state |= FOREIGN_HANDLE;
		}
	}
	reskinWidget();
	createWidget ();
}

/**
 * Constructs a new instance of this class given only its
 * parent. It is created with style SWT.DIALOG_TRIM.
 * 
    
 * Note: Currently, null can be passed in for the parent.
 * This has the effect of creating the shell on the currently active
 * display if there is one. If there is no current display, the
 * shell is created on a "default" display. Passing in null as
 * the parent is not considered to be good coding style,
 * and may not be supported in a future release of SWT.
 * 
    
 *
 * @param parent a shell which will be the parent of the new instance
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_INVALID_ARGUMENT - if the parent is disposed
      • 
 * 
    
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 */
public Shell (Shell parent) {
	this (parent, SWT.DIALOG_TRIM);
}

/**
 * Constructs a new instance of this class given its parent
 * and a style value describing its behavior and appearance.
 * 
    
 * The style value is either one of the style constants defined in
 * class SWT which is applicable to instances of this
 * class, or must be built by bitwise OR'ing together
 * (that is, using the int "|" operator) two or more
 * of those SWT style constants. The class description
 * lists the style constants that are applicable to the class.
 * Style bits are also inherited from superclasses.
 * 
    
 * Note: Currently, null can be passed in for the parent.
 * This has the effect of creating the shell on the currently active
 * display if there is one. If there is no current display, the
 * shell is created on a "default" display. Passing in null as
 * the parent is not considered to be good coding style,
 * and may not be supported in a future release of SWT.
 * 
    
 *
 * @param parent a shell which will be the parent of the new instance
 * @param style the style of control to construct
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_INVALID_ARGUMENT - if the parent is disposed
      • 
 * 
    
 * @exception SWTException 
      
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent
      • 
 *    
    • ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass
      • 
 * 
    
 *
 * @see SWT#BORDER
 * @see SWT#CLOSE
 * @see SWT#MIN
 * @see SWT#MAX
 * @see SWT#RESIZE
 * @see SWT#TITLE
 * @see SWT#NO_TRIM
 * @see SWT#NO_MOVE
 * @see SWT#SHELL_TRIM
 * @see SWT#DIALOG_TRIM
 * @see SWT#ON_TOP
 * @see SWT#TOOL
 * @see SWT#MODELESS
 * @see SWT#PRIMARY_MODAL
 * @see SWT#APPLICATION_MODAL
 * @see SWT#SYSTEM_MODAL
 * @see SWT#SHEET
 */
public Shell (Shell parent, int style) {
	this (parent != null ? parent.display : null, parent, style, 0, false);
}

/**
 * Invokes platform specific functionality to allocate a new shell
 * that is not embedded.
 * 
    
 * IMPORTANT: This method is not part of the public
 * API for Shell. It is marked public only so that it
 * can be shared within the packages provided by SWT. It is not
 * available on all platforms, and should never be called from
 * application code.
 * 
    
 *
 * @param display the display for the shell
 * @param handle the handle for the shell
 * @return a new shell object containing the specified display and handle
 *
 * @noreference This method is not intended to be referenced by clients.
 *
 * @since 3.3
 */
public static Shell internal_new (Display display, long /*int*/ handle) {
	return new Shell (display, null, SWT.NO_TRIM, handle, false);
}

/**
 * Invokes platform specific functionality to allocate a new shell
 * that is 'embedded'.  In this case, the handle represents an NSView
 * that acts as an embedded SWT Shell in an AWT Canvas.
 * 
    
 * IMPORTANT: This method is not part of the public
 * API for Shell. It is marked public only so that it
 * can be shared within the packages provided by SWT. It is not
 * available on all platforms, and should never be called from
 * application code.
 * 
    
 *
 * @param display the display for the shell
 * @param handle the handle for the shell
 * @return a new shell object containing the specified display and handle
 *
 * @noreference This method is not intended to be referenced by clients.
 *
 * @since 3.5
 */
public static Shell cocoa_new (Display display, long /*int*/ handle) {
	return new Shell (display, null, SWT.NO_TRIM, handle, true);
}

static int checkStyle (Shell parent, int style) {
	style = Decorations.checkStyle (style);
	style &= ~SWT.TRANSPARENT;
	int mask = SWT.SYSTEM_MODAL | SWT.APPLICATION_MODAL | SWT.PRIMARY_MODAL;
	if ((style & SWT.SHEET) != 0) {
		if (Display.getSheetEnabled ()) {
			style &= ~(SWT.CLOSE | SWT.TITLE | SWT.MIN | SWT.MAX);
			if (parent == null) {
				style &= ~SWT.SHEET;
				style |= SWT.SHELL_TRIM;
			}
		} else {
			style &= ~SWT.SHEET;
			style |= parent == null ? SWT.SHELL_TRIM : SWT.DIALOG_TRIM;
		}
		if ((style & mask) == 0) {
			style |= parent == null ? SWT.APPLICATION_MODAL : SWT.PRIMARY_MODAL;
		}
	}
	int bits = style & ~mask;
	if ((style & SWT.SYSTEM_MODAL) != 0) return bits | SWT.SYSTEM_MODAL;
	if ((style & SWT.APPLICATION_MODAL) != 0) return bits | SWT.APPLICATION_MODAL;
	if ((style & SWT.PRIMARY_MODAL) != 0) return bits | SWT.PRIMARY_MODAL;
	return bits;
}

@Override
boolean accessibilityIsIgnored(long /*int*/ id, long /*int*/ sel) {
	// The content view of a shell is always ignored.
	if (id == view.id) return true;
	return super.accessibilityIsIgnored(id, sel);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when operations are performed on the receiver,
 * by sending the listener one of the messages defined in the
 * ShellListener interface.
 *
 * @param listener the listener which should be notified
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_NULL_ARGUMENT - if the listener is null
      • 
 * 
    
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see ShellListener
 * @see #removeShellListener
 */
public void addShellListener(ShellListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener(SWT.Activate,typedListener);
	addListener(SWT.Close,typedListener);
	addListener(SWT.Deactivate,typedListener);
	addListener(SWT.Iconify,typedListener);
	addListener(SWT.Deiconify,typedListener);
}

void attachObserversToWindow(NSWindow newWindow) {
	if (newWindow == null || newWindow.id == 0) return;
	long /*int*/ newHostWindowClass = OS.object_getClass(newWindow.id);
	long /*int*/ sendEventImpl = OS.class_getMethodImplementation(newHostWindowClass, OS.sel_sendEvent_);
	if (sendEventImpl == Display.windowCallback3.getAddress()) return;
	hostWindow = newWindow;
	hostWindow.retain();
	long /*int*/ embeddedSubclass = display.createWindowSubclass(newHostWindowClass, "SWTAWTWindow", true);
	OS.object_setClass(hostWindow.id, embeddedSubclass);
	display.addWidget (hostWindow, this);
	hostWindowClass = newHostWindowClass;

	if (windowEmbedCounts == null) windowEmbedCounts = new HashMap();
	Integer embedCount = (Integer) windowEmbedCounts.get(hostWindow);
	if (embedCount == null) {
		embedCount = Integer.valueOf(0);
	}
	embedCount = Integer.valueOf(embedCount.intValue() + 1);
	windowEmbedCounts.put(hostWindow, embedCount);

	// Register for notifications. An embedded shell has no control over the host window,
	// so it isn't correct to install a delegate.
	NSNotificationCenter defaultCenter = NSNotificationCenter.defaultCenter();
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidBecomeKey_, OS.NSWindowDidBecomeKeyNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidDeminiaturize_, OS.NSWindowDidDeminiaturizeNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidMiniaturize_, OS.NSWindowDidMiniaturizeNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidMove_, OS.NSWindowDidMoveNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidResize_, OS.NSWindowDidResizeNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowDidResignKey_, OS.NSWindowDidResignKeyNotification, hostWindow);
	defaultCenter.addObserver(windowDelegate, OS.sel_windowWillClose_, OS.NSWindowWillCloseNotification, hostWindow);
}

@Override
void becomeKeyWindow (long /*int*/ id, long /*int*/ sel) {
	Shell modal = getModalShell();
	if (modal != null && modal.window != null) {
		modal.window.makeKeyAndOrderFront(null);
		return;
	}
	Display display = this.display;
	display.keyWindow = view.window();
	super.becomeKeyWindow(id, sel);
	display.checkFocus();
	display.keyWindow = null;
}

@Override
void bringToTop (boolean force) {
	if (getMinimized ()) return;
	if (force) {
		forceActive ();
	} else {
		setActive ();
	}
}

@Override
boolean canBecomeKeyWindow (long /*int*/ id, long /*int*/ sel) {
	if (isPopup) return false;
	// Only answer if SWT created the window.
	if (window != null) {
		if ((style & SWT.NO_FOCUS) != 0) {
			NSEvent nsEvent = NSApplication.sharedApplication().currentEvent();
			if (nsEvent != null && nsEvent.type() == OS.NSLeftMouseDown) {
				NSView contentView = window.contentView();
				if (contentView != null) {
					NSView view = contentView.hitTest(nsEvent.locationInWindow());
					if (view == contentView) return false;
				}
			}
		}
		long /*int*/ styleMask = window.styleMask();
		if (styleMask == OS.NSBorderlessWindowMask || (styleMask & (OS.NSNonactivatingPanelMask | OS.NSDocModalWindowMask | OS.NSResizableWindowMask)) != 0) return true;
	}
	return super.canBecomeKeyWindow (id, sel);
}

@Override
void checkOpen () {
	if (!opened) resized = false;
}

void center () {
	if (parent == null) return;
	Rectangle rect = getBounds ();
	Rectangle parentRect = display.map (parent, null, parent.getClientArea());
	int x = Math.max (parentRect.x, parentRect.x + (parentRect.width - rect.width) / 2);
	int y = Math.max (parentRect.y, parentRect.y + (parentRect.height - rect.height) / 2);
	Rectangle monitorRect = parent.getMonitor ().getClientArea();
	if (x + rect.width > monitorRect.x + monitorRect.width) {
		x = Math.max (monitorRect.x, monitorRect.x + monitorRect.width - rect.width);
	} else {
		x = Math.max (x, monitorRect.x);
	}
	if (y + rect.height > monitorRect.y + monitorRect.height) {
		y = Math.max (monitorRect.y, monitorRect.y + monitorRect.height - rect.height);
	} else {
		y = Math.max (y, monitorRect.y);
	}
	setLocation (x, y);
}

@Override
void clearDeferFlushing (long /*int*/ id, long /*int*/ sel) {
	deferFlushing = false;
	scrolling = false;
	if (window != null) window.flushWindowIfNeeded();
}

/**
 * Requests that the window manager close the receiver in
 * the same way it would be closed when the user clicks on
 * the "close box" or performs some other platform specific
 * key or mouse combination that indicates the window
 * should be removed.
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see SWT#Close
 * @see #dispose
 */
public void close () {
	checkWidget();
	closeWidget (false);
}

void closeWidget (boolean force) {
	if (display.isDisposed()) return;
	Event event = new Event ();
	sendEvent (SWT.Close, event);
	if ((force || event.doit) && !isDisposed ()) dispose ();
}

@Override
public Point computeSize (int wHint, int hHint, boolean changed) {
	Point size = super.computeSize (wHint, hHint, changed);
	if (toolBar != null) {
		if (wHint == SWT.DEFAULT && toolBar.itemCount > 0) {
			Point tbSize = toolBar.computeSize (SWT.DEFAULT, SWT.DEFAULT);
			size.x = Math.max (tbSize.x, size.x);
		}
	}
	return size;
}

@Override
public Rectangle computeTrim (int x, int y, int width, int height) {
	checkWidget();
	Rectangle trim = super.computeTrim(x, y, width, height);
	NSRect rect = new NSRect ();
	rect.x = trim.x;
	rect.y = trim.y;
	rect.width = trim.width;
	rect.height = trim.height;
	if (window != null) {
		if (!_getFullScreen() && !fixResize()) {
			double /*float*/ h = rect.height;
			rect = window.frameRectForContentRect(rect);
			rect.y += h-rect.height;
		}
	}
	return new Rectangle ((int)rect.x, (int)rect.y, (int)rect.width, (int)rect.height);
}

@Override
void createHandle () {
	state |= HIDDEN;
	if (window == null && view == null) {
		int styleMask = OS.NSBorderlessWindowMask;
		if ((style & (SWT.TOOL | SWT.SHEET)) != 0) {
			window = (NSWindow) new SWTPanel().alloc();
			if ((style & SWT.SHEET) != 0) {
				styleMask |= OS.NSDocModalWindowMask;
			} else {
				styleMask |= OS.NSUtilityWindowMask | OS.NSNonactivatingPanelMask;
			}
 		} else {
 			window = (NSWindow) new SWTWindow().alloc ();
 		}
		if ((style & SWT.NO_TRIM) == 0) {
			if ((style & SWT.TITLE) != 0) styleMask |= OS.NSTitledWindowMask;
			if ((style & SWT.CLOSE) != 0) styleMask |= OS.NSClosableWindowMask;
			if ((style & SWT.MIN) != 0) styleMask |= OS.NSMiniaturizableWindowMask;
			if ((style & SWT.MAX) != 0) styleMask |= OS.NSResizableWindowMask;
			if ((style & SWT.RESIZE) != 0) styleMask |= OS.NSResizableWindowMask;
		}
		NSScreen screen = null;
		NSScreen primaryScreen = new NSScreen(NSScreen.screens().objectAtIndex(0));
		if (parent != null) screen = parentWindow ().screen();
		if (screen == null) screen = primaryScreen;
		window = window.initWithContentRect(new NSRect(), styleMask, OS.NSBackingStoreBuffered, (style & SWT.ON_TOP) != 0, screen);
		if ((style & (SWT.NO_TRIM | SWT.BORDER | SWT.SHELL_TRIM)) == 0 || (style & (SWT.TOOL | SWT.SHEET)) != 0) {
			window.setHasShadow (true);
		}
		if ((style & SWT.NO_MOVE) != 0 && (OS.VERSION_MMB >= OS.VERSION_MMB(10, 6, 0))) {
			window.setMovable(false);
		}
		if ((style & SWT.TOOL) != 0) {
			// Feature in Cocoa: NSPanels that use NSUtilityWindowMask are always promoted to the floating window layer.
			// Fix is to call setFloatingPanel:NO, which turns off this behavior.
			((NSPanel)window).setFloatingPanel(false);
			// By default, panels hide on deactivation.
			((NSPanel)window).setHidesOnDeactivate(false);
			// Normally a panel doesn't become key unless something inside it needs to be first responder.
			// TOOL shells always become key, so disable that behavior.
			((NSPanel)window).setBecomesKeyOnlyIfNeeded(false);
		}
		window.setReleasedWhenClosed(true);
		if ((style & SWT.NO_TRIM) == 0) {
			NSSize size = window.minSize();
			size.width = NSWindow.minFrameWidthWithTitle(NSString.string(), styleMask);
			window.setMinSize(size);
		}
		if (fixResize ()) {
			if (window.respondsToSelector(OS.sel_setMovable_)) {
				OS.objc_msgSend(window.id, OS.sel_setMovable_, 0);
			}
		}
		display.cascadeWindow(window, screen);
		NSRect screenFrame = screen.frame();
		double /*float*/ width = screenFrame.width * 5 / 8, height = screenFrame.height * 5 / 8;;
		NSRect frame = window.frame();
		NSRect primaryFrame = primaryScreen.frame();
		frame.y = primaryFrame.height - ((primaryFrame.height - (frame.y + frame.height)) + height);
		frame.width = width;
		frame.height = height;
		window.setFrame(frame, false);
		if ((style & SWT.ON_TOP) != 0) {
			window.setLevel(OS.NSStatusWindowLevel);
		}
		super.createHandle ();
		topView ().setHidden (true);
	} else {
		state &= ~HIDDEN;

		if (window != null) {
			// In the FOREIGN_HANDLE case, 'window' is an NSWindow created on our behalf.
			// It may already have a content view, so if it does, grab and retain, since we release()
			// the view at disposal time.  Otherwise, create a new 'view' that will be used as the window's
			// content view in setZOrder.
			view = window.contentView();

			if (view == null) {
				super.createHandle();
			} else {
				view.retain();
			}
		} else {
			// In the embedded case, 'view' is already set to the NSView we should add the window's content view to as a subview.
			// In that case we will hold on to the foreign view, create our own SWTCanvasView (which overwrites 'view') and then
			// add it to the foreign view.
			NSView parentView = view;
			super.createHandle();
			parentView.addSubview(topView());
		}

		style |= SWT.NO_BACKGROUND;
	}

	windowDelegate = (SWTWindowDelegate)new SWTWindowDelegate().alloc().init();

	if (window == null) {
		NSWindow hostWindow = view.window();
		attachObserversToWindow(hostWindow);
	} else {
		int behavior = 0;
		if (parent != null) behavior |= OS.NSWindowCollectionBehaviorMoveToActiveSpace;
		if (OS.VERSION >= 0x1070) {
			if (parent == null) {
				if ((style & SWT.TOOL) != 0) {
					behavior = OS.NSWindowCollectionBehaviorFullScreenAuxiliary;
				} else {
					behavior = OS.NSWindowCollectionBehaviorFullScreenPrimary;
				}
			}
		}
		if (behavior != 0) window.setCollectionBehavior(behavior);
		window.setAcceptsMouseMovedEvents(true);
		window.setDelegate(windowDelegate);
	}

	if (OS.VERSION < 0x1060) {
		// Force a WindowRef to be created for this window so we can use
		// FindWindow() (see Display.findControl())
		if (window != null) window.windowRef();
	}

	NSWindow fieldEditorWindow = window;
	if (fieldEditorWindow == null) fieldEditorWindow = view.window();
	id id = fieldEditorWindow.fieldEditor (true, null);
	if (id != null) {
		OS.object_setClass (id.id, OS.objc_getClass ("SWTEditorView"));
		new NSTextView(id).setAllowsUndo(true);
	}

}

void deferFlushing () {
	deferFlushing = true;
	view.performSelector(OS.sel_clearDeferFlushing, null, 0.0, display.runLoopModes());
}

@Override
void deregister () {
	super.deregister ();
	if (window != null) display.removeWidget (window);
	if (windowDelegate != null) display.removeWidget (windowDelegate);
}

@Override
void destroyWidget () {
	NSWindow window = this.window;
	if (window != null) window.retain();
	Display display = this.display;
	NSView view = topView();
	if (view != null) view.retain();

	boolean sheet = (style & (SWT.SHEET)) != 0;
	releaseHandle ();
	if (window != null) {
		if (sheet) {
			NSApplication application = NSApplication.sharedApplication();
			application.endSheet(window, 0);
		}
		window.close();
	} else if (view != null) {
		view.removeFromSuperview();
	}
	if (view != null) view.release();

	// If another shell is not going to become active, clear the menu bar.
	// Don't modify the menu bar if we are an embedded Shell, though.
	if (window != null) {
		if (!display.isDisposed () && display.getShells ().length == 0) {
			display.setMenuBar (null);
		}
		window.release();
	}
}

@Override
void drawBackground (long /*int*/ id, NSGraphicsContext context, NSRect rect) {
	if (id != view.id) return;
	if (regionPath != null && background == null) {
		context.saveGraphicsState();
		NSColor.windowBackgroundColor().setFill();
		NSBezierPath.fillRect(rect);
		context.restoreGraphicsState();
		return;
	}
	super.drawBackground (id, context, rect);
}

@Override
Control findBackgroundControl () {
	return background != null || backgroundImage != null ? this : null;
}

@Override
Composite findDeferredControl () {
	return layoutCount > 0 ? this : null;
}

@Override
Cursor findCursor () {
	return cursor;
}

boolean fixResize () {
	/*
	* Feature in Cocoa.  It is not possible to have a resizable window
	* without the title bar.  The fix is to resize the content view on
	* top of the title bar.
	*
	* Never do this when the shell is embedded, because the window belongs to the AWT.
	*/
	if (window == null) return false;
	if ((style & SWT.NO_TRIM) == 0) {
		if ((style & SWT.RESIZE) != 0 && (style & (SWT.SHEET | SWT.TITLE | SWT.CLOSE | SWT.MIN | SWT.MAX)) == 0) {
			return true;
		}
	}
	return false;
}

void fixShell (Shell newShell, Control control) {
	if (this == newShell) return;
	if (control == lastActive) setActiveControl (null);
}

/**
 * If the receiver is visible, moves it to the top of the
 * drawing order for the display on which it was created
 * (so that all other shells on that display, which are not
 * the receiver's children will be drawn behind it) and forces
 * the window manager to make the shell active.
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 2.0
 * @see Control#moveAbove
 * @see Control#setFocus
 * @see Control#setVisible
 * @see Display#getActiveShell
 * @see Decorations#setDefaultButton(Button)
 * @see Shell#open
 * @see Shell#setActive
 */
public void forceActive () {
	checkWidget ();
	if (!isVisible()) return;
	if (window == null) return;
	makeKeyAndOrderFront ();
	NSApplication application = NSApplication.sharedApplication ();
	application.activateIgnoringOtherApps (true);
}

/**
 * Returns the receiver's alpha value. The alpha value
 * is between 0 (transparent) and 255 (opaque).
 *
 * @return the alpha value
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.4
 */
public int getAlpha () {
	checkWidget ();
	if (window == null) return 255;
	return (int)(window.alphaValue() * 255);
}

@Override
public Rectangle getBounds () {
	checkWidget();
	if (window != null) {
		NSRect frame = window.frame();
		double /*float*/ y = display.getPrimaryFrame().height - (int)(frame.y + frame.height);
		return new Rectangle ((int)frame.x, (int)y, (int)frame.width, (int)frame.height);
	} else {
		NSRect frame = view.frame();
		// Start from view's origin, (0, 0)
		NSPoint pt = new NSPoint();
		NSRect primaryFrame = display.getPrimaryFrame();
		if (!view.isFlipped ()) {
			pt.y = view.bounds().height - pt.y;
		}
		pt = view.convertPoint_toView_(pt, null);
		pt = view.window().convertBaseToScreen(pt);
		pt.y = primaryFrame.height - pt.y;
		return new Rectangle((int)pt.x, (int)pt.y, (int)frame.width, (int)frame.height);
	}
}

@Override
public Rectangle getClientArea () {
	checkWidget();
	NSRect rect;
	if (window != null) {
		if (!fixResize ()) {
			rect = window.contentView().frame();
		} else {
			rect = window.frame();
		}
	} else {
		rect = topView().frame();
	}
	int width = (int)rect.width, height = (int)rect.height;
	if (scrollView != null) {
		NSSize size = new NSSize();
		size.width = width;
		size.height = height;
		size = NSScrollView.contentSizeForFrameSize(size, (style & SWT.H_SCROLL) != 0, (style & SWT.V_SCROLL) != 0, OS.NSNoBorder);
		width = (int)size.width;
		height = (int)size.height;
	}
	return new Rectangle (0, 0, width, height);
}

/**
 * Returns true if the receiver is currently
 * in fullscreen state, and false otherwise.
 * 
    
 *
 * @return the fullscreen state
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.4
 */
public boolean getFullScreen () {
	checkWidget();
	return _getFullScreen ();
}

boolean _getFullScreen () {
	if ((window.collectionBehavior() & OS.NSWindowCollectionBehaviorFullScreenPrimary) != 0) {
		return (window.styleMask() & OS.NSFullScreenWindowMask) != 0 ? true : false;
	}
	return fullScreen;
}

/**
 * Returns the receiver's input method editor mode. This
 * will be the result of bitwise OR'ing together one or
 * more of the following constants defined in class
 * SWT:
 * NONE, ROMAN, DBCS,
 * PHONETIC, NATIVE, ALPHA.
 *
 * @return the IME mode
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see SWT
 */
public int getImeInputMode () {
	checkWidget();
	return SWT.NONE;
}

@Override
public Point getLocation () {
	checkWidget();

	if (window != null) {
		NSRect frame = window.frame();
		double /*float*/ y = display.getPrimaryFrame().height - (int)(frame.y + frame.height);
		return new Point ((int)frame.x, (int)y);
	} else {
		// Start from view's origin, (0, 0)
		NSPoint pt = new NSPoint();
		NSRect primaryFrame = display.getPrimaryFrame();
		if (!view.isFlipped ()) {
			pt.y = view.bounds().height - pt.y;
		}
		pt = view.convertPoint_toView_(pt, null);
		pt = view.window().convertBaseToScreen(pt);
		pt.y = primaryFrame.height - pt.y;
		return new Point((int)pt.x, (int)pt.y);
	}
}

@Override
public boolean getMaximized () {
	checkWidget();
	if (window == null) return false;
	return !_getFullScreen() && window.isZoomed();
}

Shell getModalShell () {
	Shell shell = null;
	Shell [] modalShells = display.modalShells;
	if (modalShells != null) {
		int bits = SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL;
		int index = modalShells.length;
		while (--index >= 0) {
			Shell modal = modalShells [index];
			if (modal != null) {
				if ((modal.style & bits) != 0) {
					Control control = this;
					while (control != null) {
						if (control == modal) break;
						control = control.parent;
					}
					if (control != modal) return modal;
					break;
				}
				if ((modal.style & SWT.PRIMARY_MODAL) != 0) {
					if (shell == null) shell = getShell ();
					if (modal.parent == shell) return modal;
				}
			}
		}
	}
	return null;
}

/**
 * Gets the receiver's modified state.
 *
 * @return true if the receiver is marked as modified, or false otherwise
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.5
 */
public boolean getModified () {
	checkWidget ();
	return window.isDocumentEdited ();
}

@Override
public boolean getMinimized () {
	checkWidget();
	if (!getVisible ()) return super.getMinimized ();
	if (window == null) return false;
	return window.isMiniaturized();
}

/**
 * Returns a point describing the minimum receiver's size. The
 * x coordinate of the result is the minimum width of the receiver.
 * The y coordinate of the result is the minimum height of the
 * receiver.
 *
 * @return the receiver's size
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.1
 */
public Point getMinimumSize () {
	checkWidget();
	if (window == null) return new Point(0, 0);
	NSSize size = window.minSize();
	return new Point((int)size.width, (int)size.height);
}

/**
 * Returns the region that defines the shape of the shell,
 * or null if the shell has the default shape.
 *
 * @return the region that defines the shape of the shell, or null
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.0
 *
 */
@Override
public Region getRegion () {
	/* This method is needed for the @since 3.0 Javadoc */
	checkWidget ();
	return region;
}

@Override
public Shell getShell () {
	checkWidget();
	return this;
}

/**
 * Returns an array containing all shells which are
 * descendants of the receiver.
 * 
    
 * @return the dialog shells
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 */
public Shell [] getShells () {
	checkWidget();
	int count = 0;
	Shell [] shells = display.getShells ();
	for (int i=0; inull     if the platform does not support tool bars that
 * are not part of the content area of the shell, or if the Shell's style does not support
 * having a tool bar.
 * 
    
 *
 * @return a ToolBar object representing the Shell's tool bar, or null.
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.7
 */
public ToolBar getToolBar() {
	checkWidget();
	if ((style & SWT.NO_TRIM) == 0) {
		if (toolBar == null) toolBar = new ToolBar(this, SWT.HORIZONTAL | SWT.SMOOTH, true);
	}
	return toolBar;
}

@Override
boolean hasBorder () {
	return false;
}

@Override
boolean hasRegion () {
	return region != null;
}

@Override
void helpRequested(long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) {
	Control control = display.getFocusControl();
	while (control != null) {
		if (control.hooks (SWT.Help)) {
			control.postEvent (SWT.Help);
			break;
		}
		control = control.parent;
	}
}

@Override
void invalidateVisibleRegion () {
	resetVisibleRegion ();
	if (toolBar != null) toolBar.resetVisibleRegion();
	invalidateChildrenVisibleRegion ();
}

@Override
boolean isDrawing () {
	return getDrawing ();
}

@Override
public boolean isEnabled () {
	checkWidget();
	return getEnabled ();
}

@Override
boolean isEnabledCursor () {
	return true;
}

@Override
boolean isResizing () {
	return (state & RESIZING) != 0;
}

@Override
boolean isTransparent() {
	return false;
}

@Override
public boolean isVisible () {
	checkWidget();
	return getVisible ();
}

@Override
boolean makeFirstResponder (long /*int*/ id, long /*int*/ sel, long /*int*/ responder) {
	Display display = this.display;
	boolean result = super.makeFirstResponder(id, sel, responder);
	if (!display.isDisposed()) display.checkFocus();
	return result;
}

void makeKeyAndOrderFront() {
	/*
	* Bug in Cocoa.  If a child window becomes the key window when its
	* parent window is miniaturized, the parent window appears as if
	* restored to its full size without actually being restored. In this
	* case the parent window does become active when its child is closed
	* and the user is forced to restore the window from the dock.
	* The fix is to be sure that the parent window is deminiaturized before
	* making the child a key window.
	*/
	if (parent != null) {
		NSWindow parentWindow = parentWindow ();
		if (parentWindow.isMiniaturized()) parentWindow.deminiaturize(null);
	}
	window.makeKeyAndOrderFront (null);
}

@Override
void mouseMoved(long /*int*/ id, long /*int*/ sel, long /*int*/ theEvent) {
	super.mouseMoved(id, sel, theEvent);

	/**
	 * Bug in AWT. WebViews need to have a mouseMove: handled by the window so it can generate
	 * DOMMouseMove events and also provide proper feedback to the window. However, the top-level
	 * view in an AWT window does not have the NSWindow as a next responder.
	 *
	 * Fix is to forward the message to the window if this is an embedded shell (that is, window == null)
	 */
	if (id == view.id && window == null) {
		view.window().mouseMoved(new NSEvent(theEvent));
	}
}

@Override
void noResponderFor(long /*int*/ id, long /*int*/ sel, long /*int*/ selector) {
	/**
	 * Feature in Cocoa.  If the selector is keyDown and nothing has handled the event
	 * a system beep is generated.  There's no need to beep, as many keystrokes in the SWT
	 * are listened for and acted upon but not explicitly handled in a keyDown handler.  Fix is to
	 * not call the default implementation when a keyDown: is being handled.
	 */
	if (selector != OS.sel_keyDown_) super.noResponderFor(id, sel, selector);
}

/**
 * Moves the receiver to the top of the drawing order for
 * the display on which it was created (so that all other
 * shells on that display, which are not the receiver's
 * children will be drawn behind it), marks it visible,
 * sets the focus and asks the window manager to make the
 * shell active.
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see Control#moveAbove
 * @see Control#setFocus
 * @see Control#setVisible
 * @see Display#getActiveShell
 * @see Decorations#setDefaultButton(Button)
 * @see Shell#setActive
 * @see Shell#forceActive
 */
public void open () {
	checkWidget();
	int mask = SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL;
	if ((style & mask) != 0) {
		display.setModalShell (this);
	} else {
		updateModal ();
	}
	bringToTop (false);
	setWindowVisible (true, true);
	if (isDisposed ()) return;
	if (!restoreFocus () && !traverseGroup (true)) {
		// if the parent shell is minimized, setting focus will cause it
		// to become unminimized.
		if (parent == null || !parentWindow ().isMiniaturized()) {
			setFocus ();
		}
	}
}

NSWindow parentWindow () {
	if (parent == null) return null;
	return parent.view.window();
}

@Override
public boolean print (GC gc) {
	checkWidget ();
	if (gc == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (gc.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
	return false;
}

@Override
void register () {
	/*
	 * Note that if there are multiple SWT_AWT shells only the last one created
	 * will be associated with the NSWindow. This is okay, and intentional because
	 * all of the NSWindow overrides operate on the entire window.
	 */
	super.register ();
	if (window != null) display.addWidget (window, this);
	if (windowDelegate != null) display.addWidget (windowDelegate, this);
}

@Override
void releaseChildren (boolean destroy) {
	Shell [] shells = getShells ();
	for (int i=0; i
 *    
  • ERROR_NULL_ARGUMENT - if the listener is null
    • 
 * 
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see ShellListener
 * @see #addShellListener
 */
public void removeShellListener(ShellListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook(SWT.Activate, listener);
	eventTable.unhook(SWT.Close, listener);
	eventTable.unhook(SWT.Deactivate, listener);
	eventTable.unhook(SWT.Iconify,listener);
	eventTable.unhook(SWT.Deiconify,listener);
}

@Override
public void requestLayout () {
	layout (null, SWT.DEFER);
}

@Override
void reskinChildren (int flags) {
	if (toolBar != null) toolBar.reskin(flags);
	Shell [] shells = getShells ();
	for (int i=0; i
 *    
  • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
    • 
 *    
  • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
    • 
 * 
 *
 * @since 2.0
 * @see Control#moveAbove
 * @see Control#setFocus
 * @see Control#setVisible
 * @see Display#getActiveShell
 * @see Decorations#setDefaultButton(Button)
 * @see Shell#open
 * @see Shell#setActive
 */
public void setActive () {
	if (window == null) return;
	checkWidget ();
	if (!isVisible()) return;
	makeKeyAndOrderFront ();
}

void setActiveControl (Control control) {
	setActiveControl (control, SWT.None);
}

void setActiveControl (Control control, int type) {
	if (control != null && control.isDisposed ()) control = null;
	if (lastActive != null && lastActive.isDisposed ()) lastActive = null;
	if (lastActive == control) return;

	/*
	* Compute the list of controls to be activated and
	* deactivated by finding the first common parent
	* control.
	*/
	Control [] activate = (control == null) ? new Control[0] : control.getPath ();
	Control [] deactivate = (lastActive == null) ? new Control[0] : lastActive.getPath ();
	lastActive = control;
	int index = 0, length = Math.min (activate.length, deactivate.length);
	while (index < length) {
		if (activate [index] != deactivate [index]) break;
		index++;
	}

	/*
	* It is possible (but unlikely), that application
	* code could have destroyed some of the widgets. If
	* this happens, keep processing those widgets that
	* are not disposed.
	*/
	for (int i=deactivate.length-1; i>=index; --i) {
		if (!deactivate [i].isDisposed ()) {
			deactivate [i].sendEvent (SWT.Deactivate);
		}
	}
	for (int i=activate.length-1; i>=index; --i) {
		if (!activate [i].isDisposed ()) {
			Event event = new Event ();
			event.detail = type;
			activate [i].sendEvent (SWT.Activate, event);
		}
	}
}

/**
 * Sets the receiver's alpha value which must be
 * between 0 (transparent) and 255 (opaque).
 * 
    
 * This operation requires the operating system's advanced
 * widgets subsystem which may not be available on some
 * platforms.
 * 
    
 * @param alpha the alpha value
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.4
 */
public void setAlpha (int alpha) {
	if (window == null) return;
	checkWidget ();
	alpha &= 0xFF;
	window.setAlphaValue (alpha / 255f);
}

@Override
void setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
	if (window == null) {
		// Embedded shells aren't movable.
		if (move) return;
		if (resize) {
			NSSize frameSize = new NSSize();
			frameSize.width = width;
			frameSize.height = height;
			view.setFrameSize(frameSize);
			return;
		}
	}
	if (_getFullScreen ()) setFullScreen (false);
	boolean sheet = window.isSheet();
	if (sheet && move && !resize) return;
	int screenHeight = (int) display.getPrimaryFrame().height;
	NSRect frame = window.frame();
	if (!move) {
		x = (int)frame.x;
		y = screenHeight - (int)(frame.y + frame.height);
	}
	if (resize) {
		NSSize minSize = window.minSize();
		width = Math.max(width, (int)minSize.width);
		height = Math.max(height, (int)minSize.height);
	} else {
		width = (int)frame.width;
		height = (int)frame.height;
	}
	if (sheet) {
		y = screenHeight - (int)(frame.y + frame.height);
		NSRect parentRect = parent.getShell().window.frame();
		frame.width = width;
		frame.height = height;
		frame.x = parentRect.x + (parentRect.width - frame.width) / 2;
		frame.y = screenHeight - (int)(y + frame.height);
		window.setFrame(frame, isVisible(), true);
	} else {
		frame.x = x;
		frame.y = screenHeight - (int)(y + height);
		frame.width = width;
		frame.height = height;
		window.setFrame(frame, isVisible());
	}
}

@Override
void setClipRegion (NSView view) {
	if (regionPath != null) {
		NSView rgnView = topView ();
		if (!rgnView.isFlipped()) rgnView = eventView ();
		NSPoint pt = view.convertPoint_toView_(new NSPoint(), rgnView);
		NSAffineTransform transform = NSAffineTransform.transform();
		transform.translateXBy(-pt.x, -pt.y);
		regionPath.transformUsingAffineTransform(transform);
		regionPath.addClip();
		transform.translateXBy(2*pt.x, 2*pt.y);
		regionPath.transformUsingAffineTransform(transform);
	}
}

@Override
public void setEnabled (boolean enabled) {
	checkWidget();
	if (((state & DISABLED) == 0) == enabled) return;
	super.setEnabled (enabled);
	if (enabled && window != null && window.isMainWindow()) {
		if (!restoreFocus ()) traverseGroup (false);
	}
}

/**
 * Sets the full screen state of the receiver.
 * If the argument is true causes the receiver
 * to switch to the full screen state, and if the argument is
 * false and the receiver was previously switched
 * into full screen state, causes the receiver to switch back
 * to either the maximized or normal states.
 * 
    
 * Note: The result of intermixing calls to setFullScreen(true),
 * setMaximized(true) and setMinimized(true) will
 * vary by platform. Typically, the behavior will match the platform user's
 * expectations, but not always. This should be avoided if possible.
 * 
    
 *
 * @param fullScreen the new fullscreen state
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.4
 */
public void setFullScreen (boolean fullScreen) {
	checkWidget ();
	if (window == null) return;
	if (_getFullScreen () == fullScreen) return;

	if ((window.collectionBehavior() & OS.NSWindowCollectionBehaviorFullScreenPrimary) != 0) {
		OS.objc_msgSend(window.id, OS.sel_toggleFullScreen_, 0);
		return;
	}

	this.fullScreen = fullScreen;
	if (fullScreen) {
		currentFrame = window.frame();
		window.setShowsResizeIndicator(false); //only hides resize indicator
		if (window.respondsToSelector(OS.sel_setMovable_)) {
			OS.objc_msgSend(window.id, OS.sel_setMovable_, 0);
		}

		fullScreenFrame = NSScreen.mainScreen().frame();
		if (getMonitor().equals(display.getPrimaryMonitor ())) {
			if (menuBar != null) {
				double /*float*/ menuBarHt = NSStatusBar.systemStatusBar().thickness();
				fullScreenFrame.height -= menuBarHt;
				OS.SetSystemUIMode(OS.kUIModeContentHidden, 0);
			}
			else {
				OS.SetSystemUIMode(OS.kUIModeAllHidden, 0);
			}
		}
		window.setFrame(fullScreenFrame, true);
		NSRect contentViewFrame = new NSRect();
		contentViewFrame.width = fullScreenFrame.width;
		contentViewFrame.height = fullScreenFrame.height;
		window.contentView().setFrame(contentViewFrame);
	} else {
		window.setShowsResizeIndicator(true);
		if (window.respondsToSelector(OS.sel_setMovable_)) {
			OS.objc_msgSend(window.id, OS.sel_setMovable_, 1);
		}
		OS.SetSystemUIMode(OS.kUIModeNormal, 0);
		window.setFrame(currentFrame, true);
	}
}

@Override
public void setMenuBar (Menu menu) {
	checkWidget();
	super.setMenuBar (menu);
	if (display.getActiveShell () == this) {
		display.setMenuBar (menuBar);
	}
}

/**
 * Sets the input method editor mode to the argument which
 * should be the result of bitwise OR'ing together one or more
 * of the following constants defined in class SWT:
 * NONE, ROMAN, DBCS,
 * PHONETIC, NATIVE, ALPHA.
 *
 * @param mode the new IME mode
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @see SWT
 */
public void setImeInputMode (int mode) {
	checkWidget();
}

@Override
public void setMaximized (boolean maximized) {
	checkWidget();
	super.setMaximized (maximized);
	if (window == null) return;
	if (window.isZoomed () == maximized) return;
	window.zoom (null);
}

@Override
public void setMinimized (boolean minimized) {
	checkWidget();
	super.setMinimized (minimized);
	if (window == null) return;
	if (!getVisible()) return;
	if (minimized) {
		window.miniaturize (null);
	} else {
		window.deminiaturize (null);
	}
}

/**
 * Sets the receiver's minimum size to the size specified by the arguments.
 * If the new minimum size is larger than the current size of the receiver,
 * the receiver is resized to the new minimum size.
 *
 * @param width the new minimum width for the receiver
 * @param height the new minimum height for the receiver
 *
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.1
 */
public void setMinimumSize (int width, int height) {
	checkWidget();
	if (window == null) return;
	NSSize size = new NSSize();
	size.width = width;
	size.height = height;
	window.setMinSize(size);
	NSRect frame = window.frame();
	if (width > frame.width || height > frame.height) {
		width = (int)(width > frame.width ? width : frame.width);
		height = (int)(height > frame.height ? height : frame.height);
		setBounds(0, 0, width, height, false, true);
	}
}

/**
 * Sets the receiver's minimum size to the size specified by the argument.
 * If the new minimum size is larger than the current size of the receiver,
 * the receiver is resized to the new minimum size.
 *
 * @param size the new minimum size for the receiver
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_NULL_ARGUMENT - if the point is null
      • 
 * 
    
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.1
 */
public void setMinimumSize (Point size) {
	checkWidget();
	if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
	setMinimumSize (size.x, size.y);
}

/**
 * Sets the receiver's modified state as specified by the argument.
 *
 * @param modified the new modified state for the receiver
 *
 * 
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.5
 */
public void setModified (boolean modified) {
	checkWidget ();
	window.setDocumentEdited (modified);
}

/**
 * Sets the shape of the shell to the region specified
 * by the argument.  When the argument is null, the
 * default shape of the shell is restored.  The shell
 * must be created with the style SWT.NO_TRIM in order
 * to specify a region.
 * 
    
 * NOTE: This method also sets the size of the shell. Clients should
 * not call {@link #setSize} or {@link #setBounds} on this shell.
 * Furthermore, the passed region should not be modified any more.
 * 
    
 *
 * @param region the region that defines the shape of the shell (or null)
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_INVALID_ARGUMENT - if the region has been disposed
      • 
 * 
    
 * @exception SWTException 
      
 *    
    • ERROR_WIDGET_DISPOSED - if the receiver has been disposed
      • 
 *    
    • ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
      • 
 * 
    
 *
 * @since 3.0
 */
@Override
public void setRegion (Region region) {
	checkWidget ();
	if ((style & SWT.NO_TRIM) == 0) return;
	if (window == null) return;
	if (region != null) {
		if (region.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
		Rectangle bounds = region.getBounds();
		setSize(bounds.x + bounds.width, bounds.y + bounds.height);
	}
	this.region = region;
	if (regionPath != null) regionPath.release();
	regionPath = getPath(region);
	if (region != null) {
		window.setBackgroundColor(NSColor.clearColor());
	} else {
		window.setBackgroundColor(NSColor.windowBackgroundColor());
	}
	updateOpaque ();
	window.contentView().setNeedsDisplay(true);
	if (isVisible() && window.hasShadow()) {
		window.display();
		window.invalidateShadow();
	}
}

void setScrolling () {
	scrolling = true;
	view.performSelector(OS.sel_clearDeferFlushing, null, 0.0, display.runLoopModes());
}

@Override
public void setText (String string) {
	checkWidget();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (window == null) return;
	super.setText (string);
	NSString str = NSString.stringWith(string);
	window.setTitle(str);
}

@Override
public void setVisible (boolean visible) {
	checkWidget();
	int mask = SWT.PRIMARY_MODAL | SWT.APPLICATION_MODAL | SWT.SYSTEM_MODAL;
	if ((style & mask) != 0) {
		if (visible) {
			display.setModalShell (this);
		} else {
			display.clearModal (this);
		}
	} else {
		updateModal ();
	}
	if (window == null) {
		super.setVisible(visible);
	} else {
		setWindowVisible (visible, false);
	}
}

void setWindowVisible (boolean visible, boolean key) {
	if (visible) {
		if ((state & HIDDEN) == 0) return;
		state &= ~HIDDEN;
	} else {
		if ((state & HIDDEN) != 0) return;
		state |= HIDDEN;
	}
	if (window != null && (window.isVisible() == visible)) return;
	if (visible) {
		display.clearPool ();
		if (center && !moved) {
			if (isDisposed ()) return;
			center ();
		}
		sendEvent (SWT.Show);
		if (isDisposed ()) return;
		topView ().setHidden (false);
		invalidateVisibleRegion();
		if (window != null) {
			if ((style & (SWT.SHEET)) != 0) {
				NSApplication application = NSApplication.sharedApplication();
				application.beginSheet(window, parentWindow (), null, 0, 0);
				if (OS.VERSION <= 0x1060 && window.respondsToSelector(OS.sel__setNeedsToUseHeartBeatWindow_)) {
					OS.objc_msgSend(window.id, OS.sel__setNeedsToUseHeartBeatWindow_, 0);
				}
			} else {
				// If the parent window is miniaturized, the window will be shown
				// when its parent is shown.
				boolean parentMinimized = parent != null && parentWindow ().isMiniaturized();
				if (!parentMinimized) {
					if (key && (style & SWT.NO_FOCUS) == 0) {
						makeKeyAndOrderFront ();
					} else {
						window.orderFront (null);
					}
					if (isDisposed()) return;
					if (minimized != window.isMiniaturized()) {
						if (minimized) {
							window.miniaturize (null);
						} else {
							window.deminiaturize (null);
						}
					}
				}
			}
		}
		if (isDisposed()) return;
		updateParent (visible);
		opened = true;
		if (!moved) {
			moved = true;
			sendEvent (SWT.Move);
			if (isDisposed ()) return;
		}
		if (!resized) {
			resized = true;
			sendEvent (SWT.Resize);
			if (isDisposed ()) return;
			if (layout != null) {
				markLayout (false, false);
				updateLayout (false);
			}
		}
	} else {
		updateParent (visible);
		if (window != null) {
			if ((style & (SWT.SHEET)) != 0) {
				NSApplication application = NSApplication.sharedApplication();
				application.endSheet(window, 0);
			}
			window.orderOut (null);
		}
		if (isDisposed()) return;
		topView ().setHidden (true);
		invalidateVisibleRegion();
		sendEvent (SWT.Hide);
	}

	if (isDisposed()) return;
	display.updateQuitMenu();

	if (isDisposed()) return;
	NSView[] hitView = new NSView[1];
	Control control = display.findControl (false, hitView);
	if (control != null && (!control.isActive() || !control.isEnabled())) control = null;
	Control trimControl = control;
	if (trimControl != null && trimControl.isTrim (hitView[0])) trimControl = null;
	display.checkEnterExit (trimControl, null, false);
}

@Override
void setZOrder () {
	if (scrollView != null) scrollView.setDocumentView (view);
	if (window == null) return;
	window.setContentView (scrollView != null ? scrollView : view);
	if (fixResize ()) {
		NSRect rect = window.frame();
		rect.x = rect.y = 0;
		window.contentView().setFrame(rect);
	}
}

@Override
void setZOrder (Control control, boolean above) {
	if (window == null) return;
	if (!getVisible ()) return;
	if (control == null) {
		if (above) {
			window.orderFront(null);
		} else {
			window.orderBack(null);
		}
	} else {
		NSWindow otherWindow = control.getShell().window;
		window.orderWindow(above ? OS.NSWindowAbove : OS.NSWindowBelow, otherWindow.windowNumber());
	}
}

@Override
boolean traverseEscape () {
	if (parent == null) return false;
	if (!isVisible () || !isEnabled ()) return false;
	close ();
	return true;
}

@Override
void updateCursorRects(boolean enabled) {
	super.updateCursorRects(enabled);
	if (toolBar != null) toolBar.updateCursorRects(enabled);
};

void updateModal () {
	// do nothing
}

void updateOpaque () {
	if (window == null) return;
	window.setOpaque (region == null && glContextCount == 0);
}

void updateParent (boolean visible) {
	if (window != null) {
		if (visible) {
			if (parent != null && parent.getVisible ()) {
				NSWindow parentWindow = display.modalPanel != null ? display.modalPanel : parentWindow ();
				parentWindow.addChildWindow (window, OS.NSWindowAbove);

				/**
				 * Feature in Cocoa: When a window is added as a child window,
				 * its window level resets to its parent's window level. So, we
				 * have to set the level for ON_TOP child window again.
				 */
				if ((style & SWT.ON_TOP) != 0) {
					window.setLevel(OS.NSStatusWindowLevel);
				} else if (OS.VERSION_MMB >= OS.VERSION_MMB(10, 11, 0)) {
					/*
					 * Feature in Cocoa on 10.11: Second-level child windows of
					 * a full-screen window are sometimes shown behind their
					 * parent window, although they take keyboard focus.
					 *
					 * The exact circumstances are unknown. Could only be
					 * reproduced when the app was launched with the Eclipse
					 * launcher. This hack is a workaround for
					 * https://bugs.eclipse.org/478975 .
					 */
					Shell parentShell = (Shell) parent;
					while (parentShell.parent != null) {
						parentShell = (Shell) parentShell.parent;
						if (parentShell._getFullScreen()) {
							window.setLevel(OS.NSSubmenuWindowLevel);
							break;
						}
					}
				}
			}
		} else {
			NSWindow parentWindow = window.parentWindow ();
			if (parentWindow != null) parentWindow.removeChildWindow (window);
		}
	}
	Shell [] shells = getShells ();
	for (int i = 0; i < shells.length; i++) {
		Shell shell = shells [i];
		if (shell.parent == this && shell.getVisible ()) {
			shell.updateParent (visible);
		}
	}
}

void updateSystemUIMode () {
	if ((window.collectionBehavior() & OS.NSWindowCollectionBehaviorFullScreenPrimary) != 0) return;
	if (!getMonitor ().equals (display.getPrimaryMonitor ())) return;
	int mode = display.systemUIMode, options = display.systemUIOptions;
	if (fullScreen) {
		mode = OS.kUIModeAllHidden;
		if (menuBar != null) {
			mode = OS.kUIModeContentHidden;
		}
		options = 0;
	}
	int[] uiMode = new int[1], uiOptions = new int[1];
	OS.GetSystemUIMode(uiMode, uiOptions);
	if (uiMode[0] != mode || uiOptions[0] != options) OS.SetSystemUIMode (mode, options);
	if (fullScreen)	window.setFrame(fullScreenFrame, true);
}

@Override
long /*int*/ view_stringForToolTip_point_userData (long /*int*/ id, long /*int*/ sel, long /*int*/ view, long /*int*/ tag, long /*int*/ point, long /*int*/ userData) {
	NSPoint pt = new NSPoint();
	OS.memmove (pt, point, NSPoint.sizeof);
	Control control = display.findControl (false);
	if (control == null) return 0;
	Widget target = control.findTooltip (new NSView (view).convertPoint_toView_ (pt, null));
	String string = target.tooltipText ();
	if (string == null) return 0;
	char[] chars = new char [string.length ()];
	string.getChars (0, chars.length, chars, 0);
	int length = fixMnemonic (chars);
	return NSString.stringWithCharacters (chars, length).id;
}

@Override
void viewWillMoveToWindow(long /*int*/ id, long /*int*/ sel, long /*int*/ newWindow) {
	if (window == null) {
		long /*int*/ currentWindow = hostWindow != null ? hostWindow.id : 0;
		if (currentWindow != 0) {
			removeObserversFromWindow();
		}
		if (newWindow != 0) {
			attachObserversToWindow(new NSWindow(newWindow));
		}
	}
}

@Override
void windowDidBecomeKey(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	if (window != null) {
		Display display = this.display;
		display.setMenuBar (menuBar);
	}
	sendEvent (SWT.Activate);
	if (isDisposed ()) return;
	if (!restoreFocus () && !traverseGroup (true)) setFocus ();
	if (isDisposed ()) return;
	if ((window.collectionBehavior() & OS.NSWindowCollectionBehaviorFullScreenPrimary) == 0) {
		Shell parentShell = this;
		while (parentShell.parent != null) {
			parentShell = (Shell) parentShell.parent;
			if (parentShell._getFullScreen ()) {
				break;
			}
		}
		if (!parentShell._getFullScreen () || menuBar != null) {
			updateSystemUIMode ();
		} else {
			parentShell.updateSystemUIMode ();
		}
	}
}

@Override
void windowDidDeminiturize(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	minimized = false;
	sendEvent(SWT.Deiconify);
}

@Override
void windowDidMiniturize(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	minimized = true;
	sendEvent(SWT.Iconify);
}

@Override
void windowDidMove(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	moved = true;
	sendEvent(SWT.Move);
}

@Override
void windowDidResize(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	if (((window.collectionBehavior() & OS.NSWindowCollectionBehaviorFullScreenPrimary) == 0) && fullScreen) {
		window.setFrame(fullScreenFrame, true);
		NSRect contentViewFrame = new NSRect();
		contentViewFrame.width = fullScreenFrame.width;
		contentViewFrame.height = fullScreenFrame.height;
		window.contentView().setFrame(contentViewFrame);
	}
	if (fixResize ()) {
		NSRect rect = window.frame ();
		rect.x = rect.y = 0;
		window.contentView ().setFrame (rect);
	}
	resized = true;
	sendEvent (SWT.Resize);
	if (isDisposed ()) return;
	if (layout != null) {
		markLayout (false, false);
		updateLayout (false);
	}
}

@Override
void windowDidResignKey(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	if (display.isDisposed()) return;
	sendEvent (SWT.Deactivate);
	if (isDisposed ()) return;
	setActiveControl (null);
	if (isDisposed ()) return;
	saveFocus();
}

@Override
void windowSendEvent (long /*int*/ id, long /*int*/ sel, long /*int*/ event) {
	NSEvent nsEvent = new NSEvent (event);
	int type = (int)/*64*/nsEvent.type ();
	switch (type) {
		case OS.NSLeftMouseDown:
		case OS.NSRightMouseDown:
		case OS.NSOtherMouseDown:
			display.clickCount = (int)(display.clickCountButton == nsEvent.buttonNumber() ? nsEvent.clickCount() : 1);
			display.clickCountButton = (int)nsEvent.buttonNumber();
			break;
		case OS.NSLeftMouseUp:
		case OS.NSRightMouseUp:
		case OS.NSOtherMouseUp:
		case OS.NSMouseMoved:
			NSView[] hitView = new NSView[1];
			Control control = display.findControl (false, hitView);
			if (control != null && (!control.isActive() || !control.isEnabled())) control = null;
			if (type == OS.NSMouseMoved) {
				Control trimControl = control;
				if (trimControl != null && trimControl.isTrim (hitView[0])) trimControl = null;
				display.checkEnterExit (trimControl, nsEvent, false);
				// Browser will send MouseMoved in response to a DOM event, so don't send it here.
				if (trimControl != null && (trimControl.state & WEBKIT_EVENTS_FIX) != 0) trimControl = null;
				if (trimControl != null) trimControl.sendMouseEvent (nsEvent, type, false);
			}

			// Tooltip updating: Find the widget under the cursor. If it changed, clear the tooltip from
			// the last tracked item and send a tooltip event to make it visible on the new widget.
			Widget target = null;
			if (control != null) {
				NSPoint eventPoint = nsEvent.locationInWindow();
				if (hitView[0] != null) {
					NSWindow eventWindow = nsEvent.window();

					// If a NSMouseMoved happens on an inactive window, convert the
					// event coordinates to the window of the target view.
					if (eventWindow != null && eventWindow != hitView[0].window()) {
						eventPoint = eventWindow.convertBaseToScreen(eventPoint);
						eventPoint = hitView[0].window().convertScreenToBase(eventPoint);
					}
				}
				target = control.findTooltip (eventPoint);
			}

			if (display.tooltipControl != control || display.tooltipTarget != target) {
				Control oldControl = display.tooltipControl;
				Shell oldShell = oldControl != null && !oldControl.isDisposed() ? oldControl.getShell() : null;
				Shell shell = control != null && !control.isDisposed() ? control.getShell() : null;
				if (oldShell != null) oldShell.sendToolTipEvent (false);
				if (shell != null) shell.sendToolTipEvent (true);
			}
			display.tooltipControl = control;
			display.tooltipTarget = target;
			break;

		case OS.NSKeyDown:
			/*
			* Feature in Cocoa.  For some reason, Cocoa does not perform accelerators
			* with ESC key code.  The fix is to perform the accelerators ourselves.
			*/
			if (display.escAsAcceleratorPresent && nsEvent.keyCode() == 53 /* ESC */) {
				if (escMenuItem == null || escMenuItem.getAccelerator() != SWT.ESC) {
					updateEscMenuItem();
				}
				if (escMenuItem != null) {
					Menu parentMenu = escMenuItem.getParent();
					if (parentMenu != null) {
						NSMenu escNSMenu = parentMenu.nsMenu;
						if (escNSMenu != null) {
							escNSMenu.performKeyEquivalent(nsEvent);
						}
					}
				}
			}
			/**
			 * Feature in cocoa.  Control+Tab, Ctrl+Shift+Tab, Ctrl+PageDown and Ctrl+PageUp are
			 * swallowed to handle native traversal. If we find that, force the key event to
			 * the first responder.
			 */
			if ((nsEvent.modifierFlags() & OS.NSControlKeyMask) != 0) {
				NSString chars = nsEvent.characters();

				if (chars != null && chars.length() == 1) {
					int firstChar = (int)/*64*/chars.characterAtIndex(0);

					// Shift-tab appears as control-Y.
					switch (firstChar) {
						case '\t':
						case 25:
						case OS.NSPageDownFunctionKey:
						case OS.NSPageUpFunctionKey:
							view.window().firstResponder().keyDown(nsEvent);
							return;
					}
				}
			}
			break;
	}

	// Window may have been disposed at this point.
	if (isDisposed()) return;
	super.windowSendEvent (id, sel, event);
}

private void updateEscMenuItem() {
	if (menuBar != null && !menuBar.isDisposed()){
		searchForEscMenuItem(menuBar);
	} else if (display.appMenuBar != null && !display.appMenuBar.isDisposed()) {
		searchForEscMenuItem(display.appMenuBar);
	}
}

private boolean searchForEscMenuItem(Menu menu) {
	if (menu == null || menu.isDisposed()) return false;
	MenuItem[] items = menu.getItems();
	if (items == null) return false;
	for (MenuItem item:items) {
		if (item == null || item.isDisposed()) {
			continue;
		} else if (item.getAccelerator() == SWT.ESC) {
			escMenuItem = item;
			return true;
		} else if ((item.getStyle() & SWT.CASCADE) != 0) {
			Menu subMenu = item.getMenu();
			if (searchForEscMenuItem(subMenu)) return true;
		}
	}
	return false;
}

@Override
boolean windowShouldClose(long /*int*/ id, long /*int*/ sel, long /*int*/ window) {
	if (isEnabled()) closeWidget (false);
	return false;
}

@Override
void windowWillClose(long /*int*/ id, long /*int*/ sel, long /*int*/ notification) {
	closeWidget(true);
}

}




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