/*******************************************************************************
* Copyright (c) 2000, 2009 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.internal.carbon.CFRange;
import org.eclipse.swt.internal.carbon.ControlEditTextSelectionRec;
import org.eclipse.swt.internal.carbon.OS;
import org.eclipse.swt.internal.carbon.Rect;
import org.eclipse.swt.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.graphics.*;
/**
* 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 {
int textHandle, buttonHandle;
int textVisibleRgn, buttonVisibleRgn;
int increment = 1;
int pageIncrement = 10;
int digits = 0;
int textLimit = LIMIT;
static int GAP = 3;
/**
* 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));
}
int actionProc (int theControl, int partCode) {
int result = super.actionProc (theControl, partCode);
if (result == OS.noErr) return result;
if (theControl == buttonHandle) {
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (parseFail [0]) {
value = OS.GetControl32BitValue (buttonHandle);
}
int newValue = value;
switch (partCode) {
case OS.kControlUpButtonPart:
newValue += increment;
break;
case OS.kControlDownButtonPart:
newValue -= increment;
break;
}
int max = OS.GetControl32BitMaximum (buttonHandle);
int min = OS.GetControl32BitMinimum (buttonHandle);
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);
}
return result;
}
/**
* 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 ();
int width = 0, height = 0;
int max = OS.GetControl32BitMaximum (buttonHandle);
String string = String.valueOf (max);
if (digits > 0) {
StringBuffer buffer = new StringBuffer ();
buffer.append (string);
buffer.append (getDecimalSeparator ());
int count = digits - string.length ();
while (count >= 0) {
buffer.append ("0");
count--;
}
string = buffer.toString ();
}
char [] buffer = new char [string.length ()];
string.getChars (0, buffer.length, buffer, 0);
int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length);
Point size = textExtent (ptr, 0);
if (ptr != 0) OS.CFRelease (ptr);
width = Math.max (width, size.x);
height = Math.max (height, size.y);
int [] metric = new int [1];
OS.GetThemeMetric (OS.kThemeMetricEditTextWhitespace, metric);
width += metric [0] * 2;
if (wHint != SWT.DEFAULT) width = wHint;
if (hHint != SWT.DEFAULT) height = hHint;
Rectangle trim = computeTrim (0, 0, width, height);
OS.GetThemeMetric (OS.kThemeMetricLittleArrowsHeight, metric);
trim.height = Math.max (trim.height, metric [0]);
return new Point (trim.width, trim.height);
}
public Rectangle computeTrim (int x, int y, int width, int height) {
checkWidget ();
Rect inset = inset ();
width += inset.left + inset.right;
height += inset.top + inset.bottom;
int [] outMetric = new int [1];
OS.GetThemeMetric (OS.kThemeMetricLittleArrowsWidth, outMetric);
width += outMetric [0] + GAP;
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 ();
short [] selection = new short [2];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) != OS.noErr) return;
if (selection [0] == selection [1]) return;
int [] actualSize = new int [1];
int [] ptr = new int [1];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) != OS.noErr) return;
CFRange range = new CFRange ();
range.location = selection [0];
range.length = selection [1] - selection [0];
char [] buffer= new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
OS.CFRelease (ptr [0]);
copyToClipboard (buffer);
}
void createHandle () {
int window = OS.GetControlOwner (parent.handle);
int actionProc = display.actionProc;
int features = OS.kControlSupportsEmbedding | OS.kControlSupportsFocus;
int [] outControl = new int [1];
OS.CreateUserPaneControl (window, null, features, outControl);
if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES);
handle = outControl [0];
OS.CreateLittleArrowsControl (window, null, 0, 0, 100, 1, outControl);
if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES);
buttonHandle = outControl [0];
OS.SetControlAction (buttonHandle, actionProc);
OS.CreateEditUnicodeTextControl (window, null, 0, false, null, outControl);
if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES);
textHandle = outControl [0];
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextSingleLineTag, 1, new byte [] {1});
if ((style & SWT.READ_ONLY) != 0) {
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextLockedTag, 1, new byte [] {1});
}
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;
short [] selection = new short [2];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) != OS.noErr) return;
if (selection [0] == selection [1]) return;
char [] buffer = setText ("", selection [0], selection [1], true);
if (buffer != null) {
copyToClipboard (buffer);
}
}
void deregister () {
super.deregister ();
display.removeWidget(textHandle);
display.removeWidget(buttonHandle);
}
void drawBackground (int control, int context) {
if (control == textHandle) {
fillBackground (control, context, null);
} else {
parent.fillBackground (control, context, null);
}
}
int focusHandle () {
return textHandle;
}
/**
* 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;
}
String getDecimalSeparator () {
int locale = OS.CFLocaleCopyCurrent ();
int formatter = OS.CFNumberFormatterCreate (OS.kCFAllocatorDefault, locale, OS.kCFNumberFormatterDecimalStyle);
int key = OS.kCFNumberFormatterDecimalSeparator ();
int result = OS.CFNumberFormatterCopyProperty (formatter, key);
CFRange range = new CFRange ();
range.location = 0;
range.length = OS.CFStringGetLength (result);
char [] buffer= new char [range.length];
OS.CFStringGetCharacters (result, range, buffer);
OS.CFRelease (result);
OS.CFRelease (formatter);
OS.CFRelease (locale);
return new String (buffer);
}
/**
* 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 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 OS.GetControl32BitMaximum (buttonHandle);
}
/**
* 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 OS.GetControl32BitMinimum (buttonHandle);
}
/**
* 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 OS.GetControl32BitValue (buttonHandle);
}
int getSelectionText (boolean [] parseFail) {
int [] actualSize = new int [1];
int [] ptr = new int [1];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) == OS.noErr) {
CFRange range = new CFRange ();
range.location = 0;
range.length = OS.CFStringGetLength (ptr [0]);
char [] buffer= new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
OS.CFRelease (ptr [0]);
String string = new String (buffer);
try {
int value;
if (digits > 0) {
String decimalSeparator = getDecimalSeparator ();
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 = OS.GetControl32BitMaximum (buttonHandle);
int min = OS.GetControl32BitMinimum (buttonHandle);
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() {
int [] ptr = new int [1];
int [] actualSize = new int [1];
int result = OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize);
if (result != OS.noErr) return "";
CFRange range = new CFRange ();
range.length = OS.CFStringGetLength (ptr [0]);
char [] buffer= new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
OS.CFRelease (ptr [0]);
return new String (buffer);
}
/**
* 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;
}
int getVisibleRegion (int control, boolean clipChildren) {
if (control == textHandle) {
if (!clipChildren) return super.getVisibleRegion (control, clipChildren);
if (textVisibleRgn == 0) {
textVisibleRgn = OS.NewRgn ();
calculateVisibleRegion (control, textVisibleRgn, clipChildren);
}
int result = OS.NewRgn ();
OS.CopyRgn (textVisibleRgn, result);
return result;
}
if (control == buttonHandle) {
if (!clipChildren) return super.getVisibleRegion (control, clipChildren);
if (buttonVisibleRgn == 0) {
buttonVisibleRgn = OS.NewRgn ();
calculateVisibleRegion (control, buttonVisibleRgn, clipChildren);
}
int result = OS.NewRgn ();
OS.CopyRgn (buttonVisibleRgn, result);
return result;
}
return super.getVisibleRegion (control, clipChildren);
}
void hookEvents () {
super.hookEvents ();
int controlProc = display.controlProc;
int [] mask = new int [] {
OS.kEventClassControl, OS.kEventControlDraw,
OS.kEventClassControl, OS.kEventControlSetFocusPart,
OS.kEventClassControl, OS.kEventControlTrack,
OS.kEventClassControl, OS.kEventControlGetClickActivation,
};
int controlTarget = OS.GetControlEventTarget (textHandle);
OS.InstallEventHandler (controlTarget, controlProc, mask.length / 2, mask, handle, null);
controlTarget = OS.GetControlEventTarget (buttonHandle);
OS.InstallEventHandler (controlTarget, controlProc, mask.length / 2, mask, handle, null);
}
Rect inset () {
return display.editTextInset;
}
int kEventAccessibleGetNamedAttribute (int nextHandler, int theEvent, int userData) {
int code = OS.eventNotHandledErr;
int [] stringRef = new int [1];
OS.GetEventParameter (theEvent, OS.kEventParamAccessibleAttributeName, OS.typeCFStringRef, null, 4, null, stringRef);
int length = 0;
if (stringRef [0] != 0) length = OS.CFStringGetLength (stringRef [0]);
char [] buffer = new char [length];
CFRange range = new CFRange ();
range.length = length;
OS.CFStringGetCharacters (stringRef [0], range, buffer);
String attributeName = new String(buffer);
if (attributeName.equals (OS.kAXRoleAttribute) || attributeName.equals (OS.kAXRoleDescriptionAttribute)) {
String roleText = OS.kAXGroupRole;
buffer = new char [roleText.length ()];
roleText.getChars (0, buffer.length, buffer, 0);
stringRef [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length);
if (stringRef [0] != 0) {
if (attributeName.equals (OS.kAXRoleAttribute)) {
OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, stringRef);
} else { // kAXRoleDescriptionAttribute
int stringRef2 = OS.HICopyAccessibilityRoleDescription (stringRef [0], 0);
OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, new int [] {stringRef2});
OS.CFRelease(stringRef2);
}
OS.CFRelease(stringRef [0]);
code = OS.noErr;
}
}
if (accessible != null) {
code = accessible.internal_kEventAccessibleGetNamedAttribute (nextHandler, theEvent, code);
}
return code;
}
int kEventControlSetFocusPart (int nextHandler, int theEvent, int userData) {
int result = super.kEventControlSetFocusPart (nextHandler, theEvent, userData);
if (result == OS.noErr) {
short [] part = new short [1];
OS.GetEventParameter (theEvent, OS.kEventParamControlPart, OS.typeControlPartCode, null, 2, null, part);
if (part [0] == OS.kControlFocusNoPart) {
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (parseFail [0]) {
value = OS.GetControl32BitValue (buttonHandle);
setSelection (value, false, true, false);
}
}
}
return result;
}
int kEventUnicodeKeyPressed (int nextHandler, int theEvent, int userData) {
int result = super.kEventUnicodeKeyPressed (nextHandler, theEvent, userData);
if (result == OS.noErr) return result;
int [] keyboardEvent = new int [1];
OS.GetEventParameter (theEvent, OS.kEventParamTextInputSendKeyboardEvent, OS.typeEventRef, null, keyboardEvent.length * 4, null, keyboardEvent);
int [] keyCode = new int [1];
OS.GetEventParameter (keyboardEvent [0], OS.kEventParamKeyCode, OS.typeUInt32, null, keyCode.length * 4, null, keyCode);
int [] modifiers = new int [1];
OS.GetEventParameter (keyboardEvent [0], OS.kEventParamKeyModifiers, OS.typeUInt32, null, 4, null, modifiers);
if (modifiers [0] == OS.cmdKey) {
switch (keyCode [0]) {
case 7: /* X */
cut ();
return OS.noErr;
case 8: /* C */
copy ();
return OS.noErr;
case 9: /* V */
paste ();
return OS.noErr;
}
}
int delta = 0;
switch (keyCode [0]) {
case 76: /* KP Enter */
case 36: /* Return */
sendSelectionEvent (SWT.DefaultSelection);
return OS.noErr;
case 116: /* Page Up */ delta = pageIncrement; break;
case 121: /* Page Down */ delta = -pageIncrement; break;
case 125: /* Down */ delta = -increment; break;
case 126: /* Up */ delta = increment; break;
}
if (delta != 0) {
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (parseFail [0]) {
value = OS.GetControl32BitValue (buttonHandle);
}
int newValue = value + delta;
int max = OS.GetControl32BitMaximum (buttonHandle);
int min = OS.GetControl32BitMinimum (buttonHandle);
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);
return OS.noErr;
} else {
result = OS.CallNextEventHandler (nextHandler, theEvent);
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (!parseFail [0]) {
int pos = OS.GetControl32BitValue (buttonHandle);
if (pos != value) setSelection (value, true, false, true);
}
}
return result;
}
int kEventTextInputUpdateActiveInputArea (int nextHandler, int theEvent, int userData) {
int [] length = new int [1];
OS.GetEventParameter (theEvent, OS.kEventParamTextInputSendText, OS.typeUnicodeText, null, 0, length, (char [])null);
int [] fixed_length = new int [1];
OS.GetEventParameter (theEvent, OS.kEventParamTextInputSendFixLen, OS.typeLongInteger, null, 4, null, fixed_length);
if (fixed_length [0] == -1 || fixed_length [0] == length [0]) {
postEvent (SWT.Modify);
}
return OS.eventNotHandledErr;
}
/**
* 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;
String text = getClipboardText ();
short [] selection = new short [2];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) != OS.noErr) return;
setText (text, selection [0], selection [1], true);
}
boolean pollTrackEvent() {
return true;
}
public void redraw () {
checkWidget();
super.redraw ();
redrawWidget (textHandle, false);
redrawWidget (buttonHandle, false);
}
void register () {
super.register ();
display.addWidget (textHandle, this);
display.addWidget (buttonHandle, this);
}
/**
* 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 resetVisibleRegion (int control) {
if (textVisibleRgn != 0) {
OS.DisposeRgn (textVisibleRgn);
textVisibleRgn = 0;
}
if (buttonVisibleRgn != 0) {
OS.DisposeRgn (buttonVisibleRgn);
buttonVisibleRgn = 0;
}
super.resetVisibleRegion (control);
}
void resizeClientArea () {
int [] outMetric = new int [1];
OS.GetThemeMetric (OS.kThemeMetricLittleArrowsWidth, outMetric);
int buttonWidth = outMetric [0] + GAP;
OS.GetThemeMetric (OS.kThemeMetricLittleArrowsHeight, outMetric);
int buttonHeight = outMetric [0];
Rect rect = new Rect ();
OS.GetControlBounds (handle, rect);
Rect inset = inset ();
int width = Math.max (0, rect.right - rect.left - inset.left - inset.right - buttonWidth);
int height = Math.max (0, rect.bottom - rect.top - inset.top - inset.bottom);
buttonHeight = Math.min (buttonHeight, rect.bottom - rect.top);
setBounds (textHandle, inset.left, inset.top, width, height, true, true, false);
setBounds (buttonHandle, inset.left + inset.right + width + GAP, inset.top + (height - buttonHeight) / 2, buttonWidth, buttonHeight, true, true, false);
}
boolean sendKeyEvent (int type, Event event) {
if (!super.sendKeyEvent (type, event)) {
return false;
}
if (type != SWT.KeyDown) return true;
if ((style & SWT.READ_ONLY) != 0) return true;
if (event.character == 0) return true;
if ((event.stateMask & SWT.COMMAND) != 0) return true;
// if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return true;
String oldText = "", newText = "";
int [] actualSize = new int [1];
int [] ptr = new int [1];
int charCount = 0;
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) == OS.noErr) {
charCount = OS.CFStringGetLength (ptr [0]);
OS.CFRelease (ptr [0]);
}
short [] selection = new short [2];
OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null);
int start = selection [0], end = selection [1];
switch (event.character) {
case SWT.BS:
if (start == end) {
if (start == 0) return true;
start = Math.max (0, start - 1);
}
break;
case SWT.DEL:
if (start == end) {
if (start == charCount) return true;
end = Math.min (end + 1, charCount);
}
break;
case SWT.CR:
return true;
default:
if (event.character != '\t' && event.character < 0x20) return true;
oldText = new String (new char [] {event.character});
}
newText = verifyText (oldText, start, end, event);
if (newText == null) return false;
if (charCount - (end - start) + newText.length () > textLimit) {
return false;
}
if (newText != oldText) {
setText (newText, start, end, false);
start += newText.length ();
selection = new short [] {(short)start, (short)start};
OS.SetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection);
}
/*
* Post the modify event so that the character will be inserted
* into the widget when the modify event is delivered. Normally,
* modify events are sent but it is safe to post the event here
* because this method is called from the event loop.
*/
postEvent (SWT.Modify);
return newText == oldText;
}
void setBackground (float [] color) {
super.setBackground (color);
setBackground (textHandle, color);
}
int setBounds (int x, int y, int width, int height, boolean move, boolean resize, boolean events) {
Rectangle bounds = null;
if (resize) bounds = getBounds ();
int result = super.setBounds(x, y, width, height, move, resize, events);
if (bounds != null && (result & RESIZED) != 0) {
/*
* Feature in the Macintosh. When the caret is moved,
* the text widget scrolls to show the new location.
* This means that the text widget may be scrolled
* to the right in order to show the caret when the
* widget is not large enough to show both the caret
* location and all the text. Unfortunately, when
* the text widget is resized such that all the text
* and the caret could be visible, Macintosh does not
* scroll the widget back. The fix is to reset the
* selection or the text depend on if the widget
* is on focus or not.
*/
int [] outMetric = new int [1];
OS.GetThemeMetric (OS.kThemeMetricLittleArrowsWidth, outMetric);
int buttonWidth = outMetric [0] + GAP;
Rect inset = inset ();
int minWidth = inset.left + inset.right + buttonWidth;
if (bounds.width <= minWidth && width > minWidth) {
if (hasFocus ()) {
ControlEditTextSelectionRec selection = new ControlEditTextSelectionRec ();
if (OS.GetControlData (textHandle, (short) OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null) == OS.noErr) {
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection);
}
} else {
int [] ptr = new int [1];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, null) == OS.noErr) {
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr);
}
if (ptr [0] != 0) OS.CFRelease (ptr [0]);
}
}
}
return result;
}
/**
* 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 = OS.GetControl32BitValue (buttonHandle);
setSelection (pos, false, true, false);
}
void setFontStyle (Font font) {
super.setFontStyle (font);
setFontStyle (textHandle, font);
}
void setForeground (float [] color) {
super.setForeground (color);
setForeground (textHandle, color);
}
/**
* 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;
increment = 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 = OS.GetControl32BitMinimum (buttonHandle);
if (value < min) return;
int pos = OS.GetControl32BitValue (buttonHandle);
OS.SetControl32BitMaximum (buttonHandle, 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 = OS.GetControl32BitMaximum (buttonHandle);
if (value > max) return;
int pos = OS.GetControl32BitValue (buttonHandle);
OS.SetControl32BitMinimum (buttonHandle, 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;
}
/**
* 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 = OS.GetControl32BitMinimum (buttonHandle);
int max = OS.GetControl32BitMaximum (buttonHandle);
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) {
OS.SetControl32BitValue (buttonHandle, value);
}
if (setText) {
String string;
if (digits == 0) {
string = String.valueOf (value);
} else {
string = String.valueOf (Math.abs (value));
String decimalSeparator = getDecimalSeparator ();
int index = string.length () - digits;
StringBuffer buffer = new StringBuffer ();
if (value < 0) buffer.append ("-");
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 ();
}
if (hooks (SWT.Verify) || filters (SWT.Verify)) {
int [] actualSize = new int [1];
int [] ptr = new int [1];
int length = 0;
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) == OS.noErr) {
length = OS.CFStringGetLength (ptr [0]);
OS.CFRelease (ptr [0]);
}
string = verifyText (string, 0, length, null);
if (string == null) return;
}
char [] buffer = new char [string.length ()];
string.getChars (0, buffer.length, buffer, 0);
int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length);
if (ptr == 0) error (SWT.ERROR_CANNOT_SET_TEXT);
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, new int[] {ptr});
OS.CFRelease (ptr);
short [] selection = new short [] {0, (short)string.length ()};
OS.SetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection);
sendEvent (SWT.Modify);
}
if (notify) sendSelectionEvent (SWT.Selection);
}
char [] setText (String string, int start, int end, boolean notify) {
if (notify) {
if (hooks (SWT.Verify) || filters (SWT.Verify)) {
string = verifyText (string, start, end, null);
if (string == null) return null;
}
}
int [] actualSize = new int [1];
int [] ptr = new int [1];
if (OS.GetControlData (textHandle, (short)OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr, actualSize) != OS.noErr) return null;
int charCount = OS.CFStringGetLength (ptr [0]);
int length = string.length ();
if (textLimit != LIMIT) {
if (charCount - (end - start) + length > textLimit) {
length = textLimit - charCount + (end - start);
}
}
char [] text = new char [charCount - (end - start) + length];
CFRange range = new CFRange ();
range.location = 0;
range.length = start;
char [] buffer = new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
System.arraycopy (buffer, 0, text, 0, range.length);
string.getChars (0, length, text, start);
range.location = end;
range.length = charCount - end;
buffer = new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
System.arraycopy (buffer, 0, text, start + length, range.length);
/* Copying the return value to buffer */
range.location = start;
range.length = end - start;
buffer = new char [range.length];
OS.CFStringGetCharacters (ptr [0], range, buffer);
OS.CFRelease (ptr [0]);
ptr [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, text, text.length);
if (ptr [0] == 0) error (SWT.ERROR_CANNOT_SET_TEXT);
OS.SetControlData (textHandle, OS.kControlEntireControl, OS.kControlEditTextCFStringTag, 4, ptr);
OS.CFRelease (ptr [0]);
if (notify) sendEvent (SWT.Modify);
return buffer;
}
/**
* 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.increment = increment;
this.pageIncrement = pageIncrement;
this.digits = digits;
OS.SetControl32BitMaximum (buttonHandle, maximum);
OS.SetControl32BitMinimum (buttonHandle, minimum);
setSelection (selection, true, true, false);
}
void setZOrder () {
super.setZOrder ();
if (textHandle != 0) OS.HIViewAddSubview (handle, textHandle);
if (buttonHandle != 0) OS.HIViewAddSubview (handle, buttonHandle);
}
String verifyText (String string, int start, int end, Event keyEvent) {
Event event = new Event ();
event.text = string;
event.start = start;
event.end = end;
if (keyEvent != null) {
event.character = keyEvent.character;
event.keyCode = keyEvent.keyCode;
event.stateMask = keyEvent.stateMask;
}
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;
}
if (string.length() > 0) {
int minimum = OS.GetControl32BitMinimum (buttonHandle);
if (minimum < 0 && string.charAt (0) == '-') index++;
}
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;
}
}