/*******************************************************************************
* 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.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.motif.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;
/**
* 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 {
/**
* 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));
}
/**
* 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 ();
if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
int width = wHint;
int height = hHint;
if (wHint == SWT.DEFAULT) {
width = DEFAULT_WIDTH;
int [] argList = {
OS.XmNmaximumValue, 0,
OS.XmNdecimalPoints, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
String string = String.valueOf (argList [1]);
if (argList [3] > 0) {
StringBuffer buffer = new StringBuffer ();
buffer.append (string);
buffer.append (getDecimalSeparator ());
int count = argList [3] - string.length ();
while (count >= 0) {
buffer.append ("0");
count--;
}
string = buffer.toString ();
}
byte [] buffer = Converter.wcsToMbcs (getCodePage(), string, true);
int xmString = OS.XmStringCreateLocalized (buffer);
int fontList = font.handle;
width = OS.XmStringWidth (fontList, xmString);
OS.XmStringFree (xmString);
}
if (hHint == SWT.DEFAULT) {
height = getFontHeight (font.handle);
}
Rectangle trim = computeTrim (0, 0, width, height);
if (hHint == SWT.DEFAULT) {
int [] argList = {OS.XmNarrowSize, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
trim.height = Math.max (trim.height, argList [1] * 2);
}
return new Point (trim.width, trim.height);
}
public Rectangle computeTrim (int x, int y, int width, int height) {
checkWidget ();
int [] argList1 = {
OS.XmNtextField, 0,
OS.XmNarrowSize, 0,
OS.XmNmarginWidth, 0,
OS.XmNmarginHeight, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
int [] argList2 = {
OS.XmNshadowThickness, 0,
OS.XmNhighlightThickness, 0};
OS.XtGetValues (argList1 [1], argList2, argList2.length / 2);
XRectangle rect = new XRectangle ();
OS.XmWidgetGetDisplayRect (argList1 [1], rect);
x -= argList1 [5] + argList2 [1] + argList2 [3] + rect.x;
y -= argList1 [7] + argList2 [1] + argList2 [3] + rect.y;
width += (argList1 [5] + argList2 [1] + argList2 [3] + rect.x) * 2 + argList1 [3];
height += (argList1 [7] + argList2 [1] + argList2 [3] + rect.y) * 2;
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 ();
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) return;
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
OS.XmTextCopy (argList [1], OS.XtLastTimestampProcessed (xDisplay));
}
void createHandle (int index) {
int [] argList1 = {
OS.XmNcolumns, 2,
OS.XmNdecimalPoints, 0,
OS.XmNincrementValue, 1,
OS.XmNminimumValue, 0,
OS.XmNmaximumValue, 100,
OS.XmNspinBoxChildType, OS.XmNUMERIC,
OS.XmNeditable, (style & SWT.READ_ONLY) != 0 ? 0 : 1,
OS.XmNshadowThickness, 0,
OS.XmNancestorSensitive, 1,
};
int parentHandle = parent.handle;
handle = OS.XmCreateSimpleSpinBox (parentHandle, null, argList1, argList1.length / 2);
int [] argList2 = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList2, argList2.length / 2);
int textHandle = argList2 [1];
int [] argList3 = {
OS.XmNverifyBell, 0,
OS.XmNcursorPositionVisible, (style & SWT.READ_ONLY) != 0 ? 0 : 1,
};
OS.XtSetValues (textHandle, argList3, argList3.length / 2);
if ((style & SWT.BORDER) == 0) {
int [] argList4 = new int [] {
/*
* Bug in Motif. Setting the margin width to zero for
* a single line text field causes the field to draw
* garbage when the caret is placed at the start of
* the widget. The fix is to not set the margin width.
*/
// OS.XmNmarginWidth, 0,
OS.XmNmarginHeight, 0,
OS.XmNshadowThickness, 0,
};
OS.XtSetValues (textHandle, argList4, argList4.length / 2);
}
/*
* Feature in Motif. The Spinner widget is created with a default
* drop target. This is inconsistent with other platforms.
* To be consistent, disable the default drop target.
*/
OS.XmDropSiteUnregister (textHandle);
}
/**
* 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 ();
int xDisplay = OS.XtDisplay (handle);
if (xDisplay == 0) return;
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
OS.XmTextCut (argList [1], OS.XtLastTimestampProcessed (xDisplay));
}
void deregister () {
super.deregister ();
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
display.removeWidget (argList[1]);
}
int fontHandle () {
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* 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 ();
int [] argList = {OS.XmNdecimalPoints, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
String getDecimalSeparator () {
int ptr = OS.localeconv_decimal_point ();
int length = OS.strlen (ptr);
byte [] buffer = new byte [length];
OS.memmove (buffer, ptr, length);
return new String (Converter.mbcsToWcs (null, 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 ();
int [] argList = {OS.XmNincrementValue, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* 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 ();
int [] argList = {OS.XmNmaximumValue, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* 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 ();
int [] argList = {OS.XmNminimumValue, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [1];
}
/**
* 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 1;
}
/**
* 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 ();
int [] argList = {OS.XmNposition, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return argList [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();
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int ptr = OS.XmTextGetString (argList[1]);
if (ptr == 0) return "";
int length = OS.strlen (ptr);
byte [] buffer = new byte [length];
OS.memmove (buffer, ptr, length);
OS.XtFree (ptr);
return new String (Converter.mbcsToWcs (getCodePage (), 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();
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
return OS.XmTextGetMaxLength (argList[1]);
}
void hookEvents () {
super.hookEvents ();
int windowProc = display.windowProc;
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
int textHandle = argList [1];
OS.XtAddCallback (handle, OS.XmNvalueChangedCallback, windowProc, VALUE_CHANGED_CALLBACK);
OS.XtAddCallback (handle, OS.XmNmodifyVerifyCallback, windowProc, MODIFY_VERIFY_CALLBACK);
OS.XtAddCallback (textHandle, OS.XmNactivateCallback, windowProc, ACTIVATE_CALLBACK);
OS.XtAddCallback (textHandle, OS.XmNvalueChangedCallback, windowProc, VALUE_CHANGED_CALLBACK);
OS.XtAddCallback (textHandle, OS.XmNmodifyVerifyCallback, windowProc, MODIFY_VERIFY_CALLBACK);
OS.XtAddEventHandler (textHandle, OS.ButtonPressMask, false, windowProc, BUTTON_PRESS);
OS.XtAddEventHandler (textHandle, OS.ButtonReleaseMask, false, windowProc, BUTTON_RELEASE);
OS.XtAddEventHandler (textHandle, OS.EnterWindowMask, false, windowProc, ENTER_WINDOW);
OS.XtAddEventHandler (textHandle, OS.LeaveWindowMask, false, windowProc, LEAVE_WINDOW);
OS.XtAddEventHandler (textHandle, OS.KeyPressMask, false, windowProc, KEY_PRESS);
OS.XtAddEventHandler (textHandle, OS.KeyReleaseMask, false, windowProc, KEY_RELEASE);
OS.XtInsertEventHandler (textHandle, OS.FocusChangeMask, false, windowProc, FOCUS_CHANGE, OS.XtListTail);
}
/**
* 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 ();
boolean warnings = display.getWarnings ();
display.setWarnings (false);
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
OS.XmTextFieldPaste (argList [1]);
display.setWarnings (warnings);
}
void register () {
super.register ();
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
display.addWidget (argList [1], 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 setBackgroundPixel (int pixel) {
super.setBackgroundPixel (pixel);
int [] argList1 = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
int textHandle = argList1 [1];
int [] argList2 = {OS.XmNforeground, 0, OS.XmNhighlightColor, 0};
OS.XtGetValues (textHandle, argList2, argList2.length / 2);
OS.XmChangeColor (textHandle, pixel);
OS.XtSetValues (textHandle, argList2, argList2.length / 2);
}
boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
/*
* Feature in Motif. Setting the bounds of a XmSimpleSpinBox
* does not update the size of the inner XmTextFied. The fix
* is to update its size programmatically.
*/
if (resize) {
int [] argList1 = {
OS.XmNtextField, 0,
OS.XmNarrowSize, 0,
OS.XmNmarginWidth, 0,
OS.XmNmarginHeight, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
int [] argList2 = {OS.XmNwidth, 0, OS.XmNheight, 0, OS.XmNborderWidth, 0};
OS.XtGetValues (argList1 [1], argList2, argList2.length / 2);
int textWidth = Math.max (width - argList1 [3] - 2 * argList1 [5], 0);
int textHeight = Math.max (height - 2 * argList1 [7], 0);
if (textWidth != argList2 [1] || textHeight != argList2 [3]) {
OS.XtResizeWidget (argList1 [1], textWidth, textHeight, argList2 [5]);
}
}
return super.setBounds (x, y, width, height, move, resize);
}
/**
* 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);
int [] argList1 = {OS.XmNposition, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
int [] argList2 = {OS.XmNdecimalPoints, value, OS.XmNposition, argList1 [1]};
OS.XtSetValues (handle, argList2, argList2.length / 2);
}
void setForegroundPixel (int pixel) {
int [] argList1 = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
int [] argList2 = {OS.XmNforeground, pixel};
OS.XtSetValues (argList1 [1], argList2, argList2.length / 2);
super.setForegroundPixel (pixel);
}
/**
* 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;
int [] argList = {OS.XmNincrementValue, value};
OS.XtSetValues (handle, argList, argList.length / 2);
}
/**
* 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 [] argList1 = {OS.XmNminimumValue, 0, OS.XmNposition, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
if (value < argList1 [1]) return;
int position = argList1 [3];
if (value < position) position = value;
int [] argList2 = {OS.XmNposition, position, OS.XmNmaximumValue, value};
OS.XtSetValues (handle, argList2, argList2.length / 2);
}
/**
* 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 [] argList1 = {OS.XmNmaximumValue, 0, OS.XmNposition, 0};
OS.XtGetValues (handle, argList1, argList1.length / 2);
if (value > argList1 [1]) return;
int position = argList1 [3];
if (value > position) position = value;
int [] argList2 = {OS.XmNposition, position, OS.XmNminimumValue, value};
OS.XtSetValues (handle, argList2, argList2.length / 2);
}
/**
* 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;
}
/**
* 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 [] argList = {OS.XmNmaximumValue, 0, OS.XmNminimumValue, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
value = Math.min (Math.max (argList [3], value), argList [1]);
int [] argList1 = {OS.XmNposition, value};
OS.XtSetValues (handle, argList1, argList1.length / 2);
}
/**
* 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);
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
OS.XmTextSetMaxLength (argList[1], 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);
int [] argList = {
OS.XmNposition, selection,
OS.XmNmaximumValue, maximum,
OS.XmNminimumValue, minimum,
OS.XmNincrementValue, increment,
OS.XmNdecimalPoints, digits};
OS.XtSetValues (handle, argList, argList.length / 2);
}
void updateText () {
int [] argList = {
OS.XmNtextField, 0, /* 1 */
OS.XmNminimumValue, 0, /* 3 */
OS.XmNmaximumValue, 0, /* 5 */
OS.XmNposition, 0, /* 7 */
OS.XmNdecimalPoints, 0 /* 9 */};
OS.XtGetValues (handle, argList, argList.length / 2);
int ptr = OS.XmTextGetString (argList [1]);
int position = argList [7];
int digits = argList [9];
if (ptr != 0) {
int length = OS.strlen (ptr);
byte [] buffer = new byte [length];
OS.memmove (buffer, ptr, length);
OS.XtFree (ptr);
String string = new String (Converter.mbcsToWcs (getCodePage (), 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);
}
if (argList [3] <= value && value <= argList [5]) {
position = value;
}
} catch (NumberFormatException e) {
}
}
if (position == argList [7]) {
String string;
if (digits == 0) {
string = String.valueOf (position);
} else {
string = String.valueOf (Math.abs (position));
String decimalSeparator = getDecimalSeparator ();
int index = string.length () - digits;
StringBuffer buffer = new StringBuffer ();
if (position < 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 ();
}
byte [] buffer = Converter.wcsToMbcs (getCodePage (), string, true);
boolean warnings = display.getWarnings ();
display.setWarnings (false);
OS.XmTextSetString (argList [1], buffer);
display.setWarnings (warnings);
} else {
int [] argList2 = {OS.XmNposition, position};
OS.XtSetValues (handle, argList2, argList2.length / 2);
}
}
int XmNactivateCallback (int w, int client_data, int call_data) {
postEvent (SWT.DefaultSelection);
updateText ();
return 0;
}
int xFocusOut (XFocusChangeEvent xEvent) {
updateText ();
return super.xFocusOut (xEvent);
}
int XmNmodifyVerifyCallback (int w, int client_data, int call_data) {
if (w == handle) {
if ((style & SWT.WRAP) == 0) {
XmSpinBoxCallbackStruct struct = new XmSpinBoxCallbackStruct ();
OS.memmove (struct, call_data, XmSpinBoxCallbackStruct.sizeof);
if (struct.crossed_boundary != 0) {
struct.doit = (byte) 0;
OS.memmove (call_data, struct, XmSpinBoxCallbackStruct.sizeof);
}
}
return 0;
}
int result = super.XmNmodifyVerifyCallback (w, client_data, call_data);
if (result != 0) return result;
/*
* Feature in Motif. When XtManageChild() is called for
* a text widget that has just been created, the contents
* are assigned and an XmNmodifyVerifyCallback is sent.
* When this happens, the widget has not been fully
* initialized null pointer exceptions can occur. The
* fix is to check for this case and avoid the callback.
* Note that application code could never have seen it
* in the first place.
*/
if (font == null) return result;
// if (!hooks (SWT.Verify) && !filters (SWT.Verify)) return result;
XmTextVerifyCallbackStruct textVerify = new XmTextVerifyCallbackStruct ();
OS.memmove (textVerify, call_data, XmTextVerifyCallbackStruct.sizeof);
XmTextBlockRec textBlock = new XmTextBlockRec ();
OS.memmove (textBlock, textVerify.text, XmTextBlockRec.sizeof);
byte [] buffer = new byte [textBlock.length];
OS.memmove (buffer, textBlock.ptr, textBlock.length);
String codePage = getCodePage ();
String text = new String (Converter.mbcsToWcs (codePage, buffer));
Event event = new Event ();
if (textVerify.event != 0) {
XKeyEvent xEvent = new XKeyEvent ();
OS.memmove (xEvent, textVerify.event, XKeyEvent.sizeof);
event.time = xEvent.time;
setKeyState (event, xEvent);
}
event.start = textVerify.startPos;
event.end = textVerify.endPos;
event.text = text;
String string = text;
int index = 0;
int [] argList = {OS.XmNdecimalPoints, 0, OS.XmNminimumValue, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
if (argList [1] > 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) {
if (argList [3] < 0 && string.charAt (0) == '-') index++;
}
while (index < string.length ()) {
if (!Character.isDigit (string.charAt (index))) break;
index++;
}
event.doit = index == string.length ();
sendEvent (SWT.Verify, event);
String newText = event.text;
textVerify.doit = (byte) ((event.doit && newText != null) ? 1 : 0);
if (newText != null && newText != text) {
OS.XtFree(textBlock.ptr);
byte [] buffer2 = Converter.wcsToMbcs (codePage, newText, true);
int length = buffer2.length;
int ptr = OS.XtMalloc (length);
OS.memmove (ptr, buffer2, length);
textBlock.ptr = ptr;
textBlock.length = buffer2.length - 1;
OS.memmove (textVerify.text, textBlock, XmTextBlockRec.sizeof);
}
OS.memmove (call_data, textVerify, XmTextVerifyCallbackStruct.sizeof);
return result;
}
int XmNvalueChangedCallback (int w, int client_data, int call_data) {
int [] argList = {OS.XmNtextField, 0};
OS.XtGetValues (handle, argList, argList.length / 2);
if (w == argList [1]) {
sendEvent (SWT.Modify);
} else {
XmAnyCallbackStruct struct = new XmAnyCallbackStruct ();
OS.memmove (struct, call_data, XmAnyCallbackStruct.sizeof);
if (struct.reason == OS.XmCR_OK) {
postEvent (SWT.Selection);
}
}
return 0;
}
}