/*******************************************************************************
* 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.
* <p>
* Note that although this class is a subclass of <code>Composite</code>,
* it does not make sense to add children to it, or set a layout on it.
* </p><p>
* <dl>
* <dt><b>Styles:</b></dt>
* <dd>READ_ONLY, WRAP</dd>
* <dt><b>Events:</b></dt>
* <dd>Selection, Modify, Verify</dd>
* </dl>
* </p><p>
* IMPORTANT: This class is <em>not</em> intended to be subclassed.
* </p>
*
* @see <a href="http://www.eclipse.org/swt/snippets/#spinner">Spinner snippets</a>
* @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: ControlExample</a>
* @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
*
* @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.
* <p>
* The style value is either one of the style constants defined in
* class <code>SWT</code> which is applicable to instances of this
* class, or must be built by <em>bitwise OR</em>'ing together
* (that is, using the <code>int</code> "|" operator) two or more
* of those <code>SWT</code> style constants. The class description
* lists the style constants that are applicable to the class.
* Style bits are also inherited from superclasses.
* </p>
*
* @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 <ul>
* <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
* <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
* </ul>
*
* @see SWT#READ_ONLY
* @see SWT#WRAP
* @see Widget#checkSubclass
* @see Widget#getStyle
*/
public Spinner (Composite parent, int style) {
super (parent, checkStyle (style));
}
boolean acceptsFirstResponder(long /*int*/ id, long /*int*/ sel) {
if (id == view.id) return false;
return super.acceptsFirstResponder (id, sel);
}
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 <code>ModifyListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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 <code>SelectionListener</code>
* interface.
* <p>
* <code>widgetSelected</code> is not called for texts.
* <code>widgetDefaultSelected</code> is typically called when ENTER is pressed in a single-line text.
* </p>
*
* @param listener the listener which should be notified when the control is selected by the user
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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 <code>VerifyListener</code>
* interface.
*
* @param listener the listener which should be notified
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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);
}
protected void checkSubclass () {
if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}
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);
}
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.
* <p>
* The current selection is copied to the clipboard.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void copy () {
checkWidget ();
NSText fieldEditor = textView.currentEditor();
if (fieldEditor != null) {
fieldEditor.copy(null);
} else {
//TODO
}
}
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.
* <p>
* The current selection is first copied to the
* clipboard and then deleted from the widget.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void cut () {
checkWidget ();
if ((style & SWT.READ_ONLY) != 0) return;
NSText fieldEditor = textView.currentEditor();
if (fieldEditor != null) {
fieldEditor.cut(null);
} else {
//TODO
}
}
void enableWidget (boolean enabled) {
super.enableWidget(enabled);
buttonView.setEnabled(enabled);
textView.setEnabled(enabled);
}
NSFont defaultNSFont () {
return display.textFieldFont;
}
void deregister () {
super.deregister ();
if (textView != null) {
display.removeWidget (textView);
display.removeWidget (textView.cell());
}
if (buttonView != null) {
display.removeWidget (buttonView);
display.removeWidget (buttonView.cell());
}
}
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);
}
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);
}
Cursor findCursor () {
Cursor cursor = super.findCursor ();
return (cursor != null || (style & SWT.READ_ONLY) != 0) ? cursor : display.getSystemCursor (SWT.CURSOR_IBEAM);
}
NSView focusView () {
return textView;
}
/**
* Returns the number of decimal places used by the receiver.
*
* @return the digits
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getIncrement () {
checkWidget ();
return (int)buttonView.increment();
}
/**
* Returns the maximum value which the receiver will allow.
*
* @return the maximum
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getMaximum () {
checkWidget ();
return (int)buttonView.maxValue();
}
/**
* Returns the minimum value which the receiver will allow.
*
* @return the minimum
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public int getPageIncrement () {
checkWidget ();
return pageIncrement;
}
/**
* Returns the <em>selection</em>, which is the receiver's position.
*
* @return the selection
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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 <code>setTextLimit()</code>, it will be the constant
* <code>Spinner.LIMIT</code>.
*
* @return the text limit
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @see #LIMIT
*
* @since 3.4
*/
public int getTextLimit () {
checkWidget();
return textLimit;
}
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;
}
boolean isEventView (long /*int*/ id) {
return true;
}
/**
* Pastes text from clipboard.
* <p>
* The selected text is deleted from the widget
* and new text inserted from the clipboard.
* </p>
*
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void paste () {
checkWidget ();
if ((style & SWT.READ_ONLY) != 0) return;
NSText fieldEditor = textView.currentEditor();
if (fieldEditor != null) {
fieldEditor.paste(null);
} else {
//TODO
}
}
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);
}
}
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;
}
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 <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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 <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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 <ul>
* <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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);
}
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);
}
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;
}
void sendSelection () {
setSelection (getSelection(), false, true, true);
}
void setBackgroundColor(NSColor nsColor) {
((NSTextField) textView).setBackgroundColor (nsColor);
}
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.
* <p>
* 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.
* </p>
*
* @param value the new digits (must be greater than or equal to zero)
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_INVALID_ARGUMENT - if the value is less than zero</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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);
}
void setFont(NSFont font) {
textView.setFont(font);
}
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
public void setPageIncrement (int value) {
checkWidget ();
if (value < 1) return;
pageIncrement = value;
}
void setOrientation () {
int direction = (style & SWT.RIGHT_TO_LEFT) != 0 ? OS.NSWritingDirectionRightToLeft : OS.NSWritingDirectionLeftToRight;
textView.setBaseWritingDirection(direction);
}
/**
* Sets the <em>selection</em>, 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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*/
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);
}
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.
* <p>
* To reset this value to the default, use <code>setTextLimit(Spinner.LIMIT)</code>.
* Specifying a limit value larger than <code>Spinner.LIMIT</code> sets the
* receiver's limit to <code>Spinner.LIMIT</code>.
* </p>
* @param limit new text limit
*
* @exception IllegalArgumentException <ul>
* <li>ERROR_CANNOT_BE_ZERO - if the limit is zero</li>
* </ul>
* @exception SWTException <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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.
* <p>
* 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.
* </p>
*
* @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 <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
* </ul>
*
* @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);
}
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;
}
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);
}
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;
}
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);
}
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;
}
}