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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, 2012 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 org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.internal.cocoa.*;

/**
 * Instances of this class are selectable user interface
 * objects that allow the user to enter and modify numeric
 * values.
 * 
    
 * Note that although this class is a subclass of Composite,
 * it does not make sense to add children to it, or set a layout on it.
 * 
    
 * 
    
 * 
    Styles:
    
 * 
    READ_ONLY, WRAP
    
 * 
    Events:
    
 * 
    Selection, Modify, Verify
    
 * 
    
 * 
    
 * IMPORTANT: This class is not intended to be subclassed.
 * 
    
 *
 * @see Spinner snippets
 * @see SWT Example: ControlExample
 * @see Sample code and further information
 *
 * @since 3.1
 * @noextend This class is not intended to be subclassed by clients.
 */
public class Spinner extends Composite {
	NSTextField textView;
	NSNumberFormatter textFormatter;
	NSStepper buttonView;
	int pageIncrement = 10;
	int digits = 0;
	int textLimit = LIMIT;
	static int GAP = 0;

	/**
	 * the operating system limit for the number of characters
	 * that the text field in an instance of this class can hold
	 *
	 * @since 3.4
	 */
	public static final int LIMIT;

	/*
	* These values can be different on different platforms.
	* Therefore they are not initialized in the declaration
	* to stop the compiler from inlining.
	*/
	static {
		LIMIT = 0x7FFFFFFF;
	}

/**
 * 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.
 * 
    
 *
 * @param parent a composite control which will be the parent of the new instance (cannot be null)
 * @param style the style of control to construct
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_NULL_ARGUMENT - if the parent is 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
      • 
 * 
    
 *
 * @see SWT#READ_ONLY
 * @see SWT#WRAP
 * @see Widget#checkSubclass
 * @see Widget#getStyle
 */
public Spinner (Composite parent, int style) {
	super (parent, checkStyle (style));
}

@Override
boolean acceptsFirstResponder(long /*int*/ id, long /*int*/ sel) {
	if (id == view.id) return false;
	return super.acceptsFirstResponder (id, sel);
}

@Override
boolean accessibilityIsIgnored(long /*int*/ id, long /*int*/ sel) {
	if (id == view.id) return true;
	return super.accessibilityIsIgnored(id, sel);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when the receiver's text is modified, by sending
 * it one of the messages defined in the ModifyListener
 * 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 ModifyListener
 * @see #removeModifyListener
 */
public void addModifyListener (ModifyListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Modify, typedListener);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when the control is selected by the user, by sending
 * it one of the messages defined in the SelectionListener
 * interface.
 * 
    
 * widgetSelected is not called for texts.
 * widgetDefaultSelected is typically called when ENTER is pressed in a single-line text.
 * 
    
 *
 * @param listener the listener which should be notified when the control is selected by the user
 *
 * @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 SelectionListener
 * @see #removeSelectionListener
 * @see SelectionEvent
 */
public void addSelectionListener(SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener(listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when the receiver's text is verified, by sending
 * it one of the messages defined in the VerifyListener
 * 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 VerifyListener
 * @see #removeVerifyListener
 */
void addVerifyListener (VerifyListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Verify, typedListener);
}

static int checkStyle (int style) {
	/*
	* Even though it is legal to create this widget
	* with scroll bars, they serve no useful purpose
	* because they do not automatically scroll the
	* widget's client area.  The fix is to clear
	* the SWT style.
	*/
	return style & ~(SWT.H_SCROLL | SWT.V_SCROLL);
}

@Override
protected void checkSubclass () {
	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}

@Override
public Point computeSize (int wHint, int hHint, boolean changed) {
	checkWidget ();
	double /*float*/ width = 0, height = 0;
	String string = Double.toString (buttonView.maxValue ());
	Font font = Font.cocoa_new(display, textView.font ());
	NSAttributedString str = parent.createString(string, font, null, 0, false, true, false);
	NSSize size = str.size ();
	str.release ();
	width = (float)/*64*/size.width;
	height = (float)/*64*/size.height;
	if (wHint != SWT.DEFAULT) width = wHint;
	if (hHint != SWT.DEFAULT) height = hHint;
	Rectangle trim = computeTrim (0, 0, (int)Math.ceil (width), (int)Math.ceil (height));
	if (hHint == SWT.DEFAULT) {
		size = buttonView.cell ().cellSize ();
		trim.height = Math.max (trim.height, (int)size.height);
	}
	return new Point (trim.width, trim.height);
}
@Override
public Rectangle computeTrim (int x, int y, int width, int height) {
	checkWidget();
	NSRect frameRect = textView.frame();
	NSCell cell = new NSCell (textView.cell ());
	NSRect cellRect = cell.drawingRectForBounds(frameRect);
	width += frameRect.width - cellRect.width;
	height += frameRect.height - cellRect.height;
	width += GAP;
	NSSize size = buttonView.cell ().cellSize ();
	width += (int)/*64*/size.width;
	return new Rectangle (x, y, width, height);
}

/**
 * Copies the selected text.
 * 
    
 * The current selection is copied to the clipboard.
 * 
    
 *
 * @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 void copy () {
	checkWidget ();
	NSText fieldEditor = textView.currentEditor();
	if (fieldEditor != null) {
		fieldEditor.copy(null);
	} else {
		//TODO
	}
}

@Override
void createHandle () {
	NSView widget = (NSView)new SWTView().alloc();
	widget.init();
//	widget.setDrawsBackground(false);
	NSStepper buttonWidget = (NSStepper)new SWTStepper().alloc();
	buttonWidget.init();
	buttonWidget.setValueWraps((style & SWT.WRAP) != 0);
	buttonWidget.setTarget(buttonWidget);
	buttonWidget.setAction(OS.sel_sendSelection);
	buttonWidget.setMaxValue(100);
	NSTextField textWidget = (NSTextField)new SWTTextField().alloc();
	textWidget.init();
//	textWidget.setTarget(widget);
	textWidget.setEditable((style & SWT.READ_ONLY) == 0);
	if ((style & SWT.BORDER) == 0) {
		textWidget.setFocusRingType (OS.NSFocusRingTypeNone);
		textWidget.setBordered (false);
	}
	textFormatter = (NSNumberFormatter)new NSNumberFormatter().alloc();
	textFormatter.init();
	widget.addSubview(textWidget);
	widget.addSubview(buttonWidget);
	buttonView = buttonWidget;
	textView = textWidget;
	view = widget;
	setSelection (0, false, true, false);
}

/**
 * Cuts the selected text.
 * 
    
 * The current selection is first copied to the
 * clipboard and then deleted from the widget.
 * 
    
 *
 * @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 void cut () {
	checkWidget ();
	if ((style & SWT.READ_ONLY) != 0) return;
	NSText fieldEditor = textView.currentEditor();
	if (fieldEditor != null) {
		fieldEditor.cut(null);
	} else {
		//TODO
	}
}

@Override
void enableWidget (boolean enabled) {
	super.enableWidget(enabled);
	buttonView.setEnabled(enabled);
	textView.setEnabled(enabled);
}

@Override
NSFont defaultNSFont () {
	return display.textFieldFont;
}

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

	if (buttonView != null) {
		display.removeWidget (buttonView);
		display.removeWidget (buttonView.cell());
	}
}

@Override
void drawBackground (long /*int*/ id, NSGraphicsContext context, NSRect rect) {
	if (backgroundImage == null) return;
	if (new NSView(id).isKindOfClass(OS.class_NSText)) {
		NSText text = new NSText(id);
		if (!text.isFieldEditor()) return;
	}
	fillBackground (view, context, rect, -1);
}

@Override
void drawInteriorWithFrame_inView(long /*int*/ id, long /*int*/ sel, NSRect cellFrame, long /*int*/ viewid) {
	Control control = findBackgroundControl();
	if (control == null) control = this;
	Image image = control.backgroundImage;
	if (image != null && !image.isDisposed()) {
		NSGraphicsContext context = NSGraphicsContext.currentContext();
 	 	control.fillBackground (view, context, cellFrame, -1);
	}
	super.drawInteriorWithFrame_inView(id, sel, cellFrame, viewid);
}

@Override
Cursor findCursor () {
	Cursor cursor = super.findCursor ();
	return (cursor != null || (style & SWT.READ_ONLY) != 0) ? cursor : display.getSystemCursor (SWT.CURSOR_IBEAM);
}

@Override
NSView focusView () {
	return textView;
}

/**
 * Returns the number of decimal places used by the receiver.
 *
 * @return the digits
 *
 * @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 int getDigits () {
	checkWidget ();
	return digits;
}

/**
 * Returns the amount that the receiver's value will be
 * modified by when the up/down arrows are pressed.
 *
 * @return the increment
 *
 * @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 int getIncrement () {
	checkWidget ();
	return (int)buttonView.increment();
}

/**
 * Returns the maximum value which the receiver will allow.
 *
 * @return the maximum
 *
 * @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 int getMaximum () {
	checkWidget ();
	return (int)buttonView.maxValue();
}

/**
 * Returns the minimum value which the receiver will allow.
 *
 * @return the minimum
 *
 * @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 int getMinimum () {
	checkWidget ();
	return (int)buttonView.minValue();
}

/**
 * Returns the amount that the receiver's position will be
 * modified by when the page up/down keys are pressed.
 *
 * @return the page increment
 *
 * @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 int getPageIncrement () {
	checkWidget ();
	return pageIncrement;
}

/**
 * Returns the selection, which is the receiver's position.
 *
 * @return the selection
 *
 * @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 int getSelection () {
	checkWidget ();
	return (int)((NSStepper)buttonView).doubleValue();
}

int getSelectionText (boolean[] parseFail) {
	String string = textView.stringValue().getString();
	try {
		int value;
		if (digits > 0) {
			String decimalSeparator = textFormatter.decimalSeparator().getString();
			int index = string.indexOf (decimalSeparator);
			if (index != -1)  {
				int startIndex = string.startsWith ("+") || string.startsWith ("-") ? 1 : 0;
				String wholePart = startIndex != index ? string.substring (startIndex, index) : "0";
				String decimalPart = string.substring (index + 1);
				if (decimalPart.length () > digits) {
					decimalPart = decimalPart.substring (0, digits);
				} else {
					int i = digits - decimalPart.length ();
					for (int j = 0; j < i; j++) {
						decimalPart = decimalPart + "0";
					}
				}
				int wholeValue = Integer.parseInt (wholePart);
				int decimalValue = Integer.parseInt (decimalPart);
				for (int i = 0; i < digits; i++) wholeValue *= 10;
				value = wholeValue + decimalValue;
				if (string.startsWith ("-")) value = -value;
			} else {
				value = Integer.parseInt (string);
				for (int i = 0; i < digits; i++) value *= 10;
			}
		} else {
			value = Integer.parseInt (string);
		}
		int max = getMaximum();
		int min = getMinimum();
		if (min <= value && value <= max) return value;
	} catch (NumberFormatException e) {
	}
	parseFail [0] = true;
	return -1;
}

/**
 * Returns a string containing a copy of the contents of the
 * receiver's text field, or an empty string if there are no
 * contents.
 *
 * @return the receiver's text
 *
 * @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 String getText () {
	checkWidget ();
	NSString str = new NSTextFieldCell (textView.cell ()).title ();
	return str.getString ();
}

/**
 * Returns the maximum number of characters that the receiver's
 * text field is capable of holding. If this has not been changed
 * by setTextLimit(), it will be the constant
 * Spinner.LIMIT.
 *
 * @return the text limit
 *
 * @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 #LIMIT
 *
 * @since 3.4
 */
public int getTextLimit () {
	checkWidget();
    return textLimit;
}

@Override
boolean handleIsAccessible(long /*int*/ id) {
	// All subviews of a Spinner can have their accessible properties overridden.
	// The top-level NSView is already ignored, so we don't need to test for that.
	return true;
}

@Override
boolean isEventView (long /*int*/ id) {
	return true;
}

/**
 * Pastes text from clipboard.
 * 
    
 * The selected text is deleted from the widget
 * and new text inserted from the clipboard.
 * 
    
 *
 * @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 void paste () {
	checkWidget ();
	if ((style & SWT.READ_ONLY) != 0) return;
	NSText fieldEditor = textView.currentEditor();
	if (fieldEditor != null) {
		fieldEditor.paste(null);
	} else {
		//TODO
	}
}

@Override
void register () {
	super.register ();
	if (textView != null) {
		display.addWidget (textView, this);
		display.addWidget (textView.cell(), this);
	}

	if (buttonView != null) {
		display.addWidget (buttonView, this);
		display.addWidget (buttonView.cell(), this);
	}
}

@Override
void releaseHandle () {
	super.releaseHandle();
	if (textFormatter != null) textFormatter.release();
	if (buttonView != null) buttonView.release();
	if (textView != null) textView.release();
	textFormatter = null;
	buttonView = null;
	textView = null;
}

@Override
void releaseWidget () {
	super.releaseWidget ();
	if (textView != null) textView.abortEditing();
}

/**
 * Removes the listener from the collection of listeners who will
 * be notified when the receiver's text is modified.
 *
 * @param listener the listener which should no longer 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 ModifyListener
 * @see #addModifyListener
 */
public void removeModifyListener (ModifyListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Modify, listener);
}

/**
 * Removes the listener from the collection of listeners who will
 * be notified when the control is selected by the user.
 *
 * @param listener the listener which should no longer 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 SelectionListener
 * @see #addSelectionListener
 */
public void removeSelectionListener(SelectionListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);
}

/**
 * Removes the listener from the collection of listeners who will
 * be notified when the control is verified.
 *
 * @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 VerifyListener
 * @see #addVerifyListener
 */
void removeVerifyListener (VerifyListener listener) {
	checkWidget ();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Verify, listener);
}

@Override
void resized () {
	super.resized ();
	buttonView.sizeToFit();
	NSSize textSize = textView.cell ().cellSize ();
	NSRect buttonFrame = buttonView.bounds();
	NSRect frame = view.frame();
	buttonFrame.x = frame.width - buttonFrame.width;
	buttonFrame.y = (frame.height - buttonFrame.height) / 2;
	int textHeight = (int)Math.min(textSize.height, frame.height);
	frame.x = 0;
	frame.y = (frame.height - textHeight) / 2;
	frame.width -= buttonFrame.width + GAP;
	frame.height = textHeight;
	textView.setFrame(frame);
	buttonView.setFrame(buttonFrame);
}

@Override
boolean sendKeyEvent (NSEvent nsEvent, int type) {
	boolean result = super.sendKeyEvent (nsEvent, type);
	if (!result) return result;
	if (type != SWT.KeyDown) return result;
	int delta = 0;
	short keyCode = nsEvent.keyCode ();
	switch (keyCode) {
		case 76: /* KP Enter */
		case 36: { /* Return */
			sendSelectionEvent (SWT.DefaultSelection);
			return true;
		}

	    case 116: delta = pageIncrement; break; /* Page Up */
	    case 121: delta = -pageIncrement; break; /* Page Down */
	    case 125: delta = -getIncrement(); break; /* Down arrow */
	    case 126: delta = getIncrement(); break; /* Up arrow */
    }

    if (delta != 0) {
    	boolean [] parseFail = new boolean [1];
    	int value = getSelectionText (parseFail);
    	if (parseFail [0]) {
    		value = (int)buttonView.doubleValue();
    	}
    	int newValue = value + delta;
    	int max = (int)buttonView.maxValue();
    	int min = (int)buttonView.minValue();
    	if ((style & SWT.WRAP) != 0) {
    		if (newValue > max) newValue = min;
    		if (newValue < min) newValue = max;
    	}
    	newValue = Math.min (Math.max (min, newValue), max);
    	if (value != newValue) setSelection (newValue, true, true, true);
    	// Prevent the arrow or page up/down from being handled by the text field.
    	result = false;
    } else {
    	boolean [] parseFail = new boolean [1];
    	int value = getSelectionText (parseFail);
    	if (!parseFail [0]) {
    		int pos = (int)buttonView.doubleValue();
    		if (pos != value) setSelection (value, true, false, true);
    	}
    }

    return result;
}

@Override
void sendSelection () {
	setSelection (getSelection(), false, true, true);
}

@Override
void setBackgroundColor(NSColor nsColor) {
	((NSTextField) textView).setBackgroundColor (nsColor);
}

@Override
void setBackgroundImage(NSImage image) {
	NSTextField widget = (NSTextField) textView;
	widget.setDrawsBackground(image == null);
	NSText editor = widget.window().fieldEditor(true, widget);
	editor.setDrawsBackground(image == null);
}
/**
 * Sets the number of decimal places used by the receiver.
 * 
    
 * The digit setting is used to allow for floating point values in the receiver.
 * For example, to set the selection to a floating point value of 1.37 call setDigits() with
 * a value of 2 and setSelection() with a value of 137. Similarly, if getDigits() has a value
 * of 2 and getSelection() returns 137 this should be interpreted as 1.37. This applies to all
 * numeric APIs.
 * 
    
 *
 * @param value the new digits (must be greater than or equal to zero)
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_INVALID_ARGUMENT - if the value is less than zero
      • 
 * 
    
 * @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 void setDigits (int value) {
	checkWidget ();
	if (value < 0) error (SWT.ERROR_INVALID_ARGUMENT);
	if (value == digits) return;
	digits = value;
	int pos = (int)buttonView.doubleValue();
	setSelection (pos, false, true, false);
}

@Override
void setFont(NSFont font) {
	textView.setFont(font);
}

@Override
void setForeground (double /*float*/ [] color) {
	NSColor nsColor;
	if (color == null) {
		nsColor = NSColor.textColor ();
	} else {
		nsColor = NSColor.colorWithDeviceRed (color [0], color [1], color [2], 1);
	}
	((NSTextField) textView).setTextColor (nsColor);
}

/**
 * Sets the amount that the receiver's value will be
 * modified by when the up/down arrows are pressed to
 * the argument, which must be at least one.
 *
 * @param value the new increment (must be greater than zero)
 *
 * @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 void setIncrement (int value) {
	checkWidget ();
	if (value < 1) return;
	buttonView.setIncrement(value);
}

/**
 * Sets the maximum value that the receiver will allow.  This new
 * value will be ignored if it is less than the receiver's current
 * minimum value.  If the new maximum is applied then the receiver's
 * selection value will be adjusted if necessary to fall within its new range.
 *
 * @param value the new maximum, which must be greater than or equal to the current minimum
 *
 * @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 void setMaximum (int value) {
	checkWidget ();
	int min = getMinimum ();
	if (value < min) return;
	int pos = getSelection();
	buttonView.setMaxValue(value);
	if (pos > value) setSelection (value, true, true, false);
}

/**
 * Sets the minimum value that the receiver will allow.  This new
 * value will be ignored if it is greater than the receiver's
 * current maximum value.  If the new minimum is applied then the receiver's
 * selection value will be adjusted if necessary to fall within its new range.
 *
 * @param value the new minimum, which must be less than or equal to the current maximum
 *
 * @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 void setMinimum (int value) {
	checkWidget ();
	int max = getMaximum();
	if (value > max) return;
	int pos = getSelection();
	buttonView.setMinValue(value);
	if (pos < value) setSelection (value, true, true, false);
}

/**
 * Sets the amount that the receiver's position will be
 * modified by when the page up/down keys are pressed
 * to the argument, which must be at least one.
 *
 * @param value the page increment (must be greater than zero)
 *
 * @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 void setPageIncrement (int value) {
	checkWidget ();
	if (value < 1) return;
	pageIncrement = value;
}

@Override
void setOrientation () {
	int direction = (style & SWT.RIGHT_TO_LEFT) != 0 ? OS.NSWritingDirectionRightToLeft : OS.NSWritingDirectionLeftToRight;
	textView.setBaseWritingDirection(direction);
}

/**
 * Sets the selection, which is the receiver's
 * position, to the argument. If the argument is not within
 * the range specified by minimum and maximum, it will be
 * adjusted to fall within this range.
 *
 * @param value the new selection (must be zero or greater)
 *
 * @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 void setSelection (int value) {
	checkWidget ();
	int min = getMinimum();
	int max = getMaximum();
	value = Math.min (Math.max (min, value), max);
	setSelection (value, true, true, false);
}

void setSelection (int value, boolean setPos, boolean setText, boolean notify) {
	if (setPos) {
		((NSStepper)buttonView).setDoubleValue(value);
	}
	if (setText) {
		String string = String.valueOf (value);
		if (digits > 0) {
			String decimalSeparator = textFormatter.decimalSeparator().getString();
			int index = string.length () - digits;
			StringBuffer buffer = new StringBuffer ();
			if (index > 0) {
				buffer.append (string.substring (0, index));
				buffer.append (decimalSeparator);
				buffer.append (string.substring (index));
			} else {
				buffer.append ("0");
				buffer.append (decimalSeparator);
				while (index++ < 0) buffer.append ("0");
				buffer.append (string);
			}
			string = buffer.toString ();
		}
		NSCell cell = new NSCell(textView.cell());
		if (hooks (SWT.Verify) || filters (SWT.Verify)) {
			int length = (int)/*64*/cell.title().length();
			string = verifyText (string, 0, length, null);
			if (string == null) return;
		}
		textView.setStringValue(NSString.stringWith(string));
		NSRange selection = new NSRange();
		selection.location = 0;
		selection.length = string.length();
		NSText fieldEditor = textView.currentEditor();
		if (fieldEditor != null) fieldEditor.setSelectedRange(selection);
		sendEvent (SWT.Modify);
	}
	if (notify) sendSelectionEvent (SWT.Selection);
}

@Override
void setSmallSize () {
	textView.cell ().setControlSize (OS.NSSmallControlSize);
	buttonView.cell ().setControlSize (OS.NSSmallControlSize);
}

/**
 * Sets the maximum number of characters that the receiver's
 * text field is capable of holding to be the argument.
 * 
    
 * To reset this value to the default, use setTextLimit(Spinner.LIMIT).
 * Specifying a limit value larger than Spinner.LIMIT sets the
 * receiver's limit to Spinner.LIMIT.
 * 
    
 * @param limit new text limit
 *
 * @exception IllegalArgumentException 
      
 *    
    • ERROR_CANNOT_BE_ZERO - if the limit is zero
      • 
 * 
    
 * @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 #LIMIT
 *
 * @since 3.4
 */
public void setTextLimit (int limit) {
	checkWidget();
	if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO);
	textLimit = limit;
}

/**
 * Sets the receiver's selection, minimum value, maximum
 * value, digits, increment and page increment all at once.
 * 
    
 * Note: This is similar to setting the values individually
 * using the appropriate methods, but may be implemented in a
 * more efficient fashion on some platforms.
 * 
    
 *
 * @param selection the new selection value
 * @param minimum the new minimum value
 * @param maximum the new maximum value
 * @param digits the new digits value
 * @param increment the new increment value
 * @param pageIncrement the new pageIncrement 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 3.2
 */
public void setValues (int selection, int minimum, int maximum, int digits, int increment, int pageIncrement) {
	checkWidget ();
	if (maximum < minimum) return;
	if (digits < 0) return;
	if (increment < 1) return;
	if (pageIncrement < 1) return;
	selection = Math.min (Math.max (minimum, selection), maximum);
	this.pageIncrement = pageIncrement;
	this.digits = digits;
	buttonView.setIncrement(increment);
	buttonView.setMaxValue(maximum);
	buttonView.setMinValue(minimum);
	setSelection (selection, true, true, false);
}

@Override
boolean shouldChangeTextInRange_replacementString(long /*int*/ id, long /*int*/ sel, long /*int*/ affectedCharRange, long /*int*/ replacementString) {
	NSRange range = new NSRange();
	OS.memmove(range, affectedCharRange, NSRange.sizeof);
	boolean result = callSuperBoolean(id, sel, range, replacementString);
	if (hooks (SWT.Verify)) {
		String text = new NSString(replacementString).getString();
		NSEvent currentEvent = display.application.currentEvent();
		long /*int*/ type = currentEvent.type();
		if (type != OS.NSKeyDown && type != OS.NSKeyUp) currentEvent = null;
		String newText = verifyText(text, (int)/*64*/range.location, (int)/*64*/(range.location+range.length), currentEvent);
		if (newText == null) return false;
		if (text != newText) {
			int length = newText.length();
			NSText fieldEditor = textView.currentEditor ();
			if (fieldEditor != null) {
				NSRange selectedRange = fieldEditor.selectedRange();
				if (textLimit != LIMIT) {
					long /*int*/ charCount = fieldEditor.string().length();
					if (charCount - selectedRange.length + length > textLimit) {
						length = (int)/*64*/(textLimit - charCount + selectedRange.length);
					}
				}
				char [] buffer = new char [length];
				newText.getChars (0, buffer.length, buffer, 0);
				NSString nsstring = NSString.stringWithCharacters (buffer, buffer.length);
				fieldEditor.replaceCharactersInRange (fieldEditor.selectedRange (), nsstring);
				result = false;
			}
		}
		if (!result) sendEvent (SWT.Modify);
	}
	return result;
}

@Override
void textDidChange (long /*int*/ id, long /*int*/ sel, long /*int*/ aNotification) {
	super.textDidChange (id, sel, aNotification);
	boolean [] parseFail = new boolean [1];
	int value = getSelectionText (parseFail);
	if (!parseFail [0]) {
		int pos = (int)buttonView.doubleValue();
		if (value != pos) {
			setSelection (value, true, false, true);
		}
	}
	postEvent (SWT.Modify);
}

@Override
NSRange textView_willChangeSelectionFromCharacterRange_toCharacterRange (long /*int*/ id, long /*int*/ sel, long /*int*/ aTextView, long /*int*/ oldSelectedCharRange, long /*int*/ newSelectedCharRange) {
	/* allow the selection change to proceed */
	NSRange result = new NSRange ();
	OS.memmove(result, newSelectedCharRange, NSRange.sizeof);
	return result;
}

@Override
void textDidEndEditing(long /*int*/ id, long /*int*/ sel, long /*int*/ aNotification) {
	boolean [] parseFail = new boolean [1];
	int value = getSelectionText (parseFail);
	if (parseFail [0]) {
		value = (int)buttonView.doubleValue();
		setSelection (value, false, true, false);
	}
	super.textDidEndEditing(id, sel, aNotification);
}

@Override
void updateCursorRects (boolean enabled) {
	super.updateCursorRects (enabled);
	updateCursorRects (enabled, textView);
	updateCursorRects (enabled, buttonView);
}

String verifyText (String string, int start, int end, NSEvent keyEvent) {
	Event event = new Event ();
	if (keyEvent != null) setKeyState(event, SWT.MouseDown, keyEvent);
	event.text = string;
	event.start = start;
	event.end = end;
	int index = 0;
	if (digits > 0) {
		String decimalSeparator = ".";//getDecimalSeparator ();
		index = string.indexOf (decimalSeparator);
		if (index != -1) {
			string = string.substring (0, index) + string.substring (index + 1);
		}
		index = 0;
	}
	while (index < string.length ()) {
		if (!Character.isDigit (string.charAt (index))) break;
		index++;
	}
	event.doit = index == string.length ();
	/*
	 * It is possible (but unlikely), that application
	 * code could have disposed the widget in the verify
	 * event.  If this happens, answer null to cancel
	 * the operation.
	 */
	sendEvent (SWT.Verify, event);
	if (!event.doit || isDisposed ()) return null;
	return event.text;
}

}




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