/*******************************************************************************
* 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.graphics.*;
import org.eclipse.swt.internal.wpf.*;
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 {
int textHandle, upHandle, downHandle;
int increment, pageIncrement, digits, max, min, value;
/**
* 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));
}
Control [] _getChildren () {
return new Control [0];
}
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);
}
int backgroundHandle () {
return textHandle;
}
int backgroundProperty () {
return OS.Control_BackgroundProperty ();
}
public Point computeSize (int wHint, int hHint, boolean changed) {
checkWidget ();
return super.computeSize (handle, wHint, hHint, changed);
}
int createArrow (int direction) {
int geometry = OS.gcnew_StreamGeometry ();
int context = OS.StreamGeometry_Open (geometry);
int start = 0, point = 0, end = 0;
switch (direction) {
case SWT.DOWN:
start = OS.gcnew_Point (0, 0);
point = OS.gcnew_Point (3, 3);
end = OS.gcnew_Point (6, 0);
break;
case SWT.UP:
start = OS.gcnew_Point (0, 3);
point = OS.gcnew_Point (3, 0);
end = OS.gcnew_Point (6, 3);
break;
}
OS.StreamGeometryContext_BeginFigure (context, start, true, true);
OS.StreamGeometryContext_LineTo (context, point, true, true);
OS.StreamGeometryContext_LineTo (context, end, true, true);
OS.StreamGeometryContext_Close (context);
int path = OS.gcnew_Path ();
OS.Path_Data (path, geometry);
int padding = OS.gcnew_Thickness (3, 0, 3, 0);
OS.FrameworkElement_Margin (path, padding);
int brush = OS.Brushes_Black ();
OS.Path_Fill (path, brush);
OS.FrameworkElement_HorizontalAlignment (path, OS.HorizontalAlignment_Center);
OS.FrameworkElement_VerticalAlignment (path, OS.VerticalAlignment_Center);
OS.GCHandle_Free (padding);
OS.GCHandle_Free (start);
OS.GCHandle_Free (point);
OS.GCHandle_Free (end);
OS.GCHandle_Free (brush);
OS.GCHandle_Free (context);
OS.GCHandle_Free (geometry);
return path;
}
void createHandle () {
handle = OS.gcnew_Grid ();
if (handle == 0) error (SWT.ERROR_NO_HANDLES);
int row0 = OS.gcnew_RowDefinition ();
int row1 = OS.gcnew_RowDefinition ();
int rows = OS.Grid_RowDefinitions (handle);
OS.RowDefinitionCollection_Add (rows, row0);
OS.RowDefinitionCollection_Add (rows, row1);
int col0 = OS.gcnew_ColumnDefinition ();
int col1 = OS.gcnew_ColumnDefinition ();
int columns = OS.Grid_ColumnDefinitions (handle);
OS.ColumnDefinitionCollection_Add (columns, col0);
OS.ColumnDefinitionCollection_Add (columns, col1);
int gridChildren = OS.Panel_Children (handle);
textHandle = OS.gcnew_TextBox ();
if (textHandle == 0) error (SWT.ERROR_NO_HANDLES);
OS.Grid_SetRowSpan (textHandle, 2);
OS.UIElementCollection_Add (gridChildren, textHandle);
if ((style & SWT.READ_ONLY) != 0) OS.TextBoxBase_IsReadOnly (textHandle, true);
upHandle = OS.gcnew_RepeatButton ();
if (upHandle == 0) error (SWT.ERROR_NO_HANDLES);
int upArrow = createArrow (SWT.UP);
OS.ContentControl_Content (upHandle, upArrow);
OS.Grid_SetColumn (upHandle, 1);
OS.UIElementCollection_Add (gridChildren, upHandle);
downHandle = OS.gcnew_RepeatButton ();
if (downHandle == 0) error (SWT.ERROR_NO_HANDLES);
int downArrow = createArrow (SWT.DOWN);
OS.ContentControl_Content (downHandle, downArrow);
OS.Grid_SetColumn (downHandle, 1);
OS.Grid_SetRow (downHandle, 1);
OS.UIElementCollection_Add (gridChildren, downHandle);
int colWidth0 = OS.gcnew_GridLength (10, OS.GridUnitType_Star);
OS.ColumnDefinition_Width(col0, colWidth0);
int colWidth1 = OS.gcnew_GridLength (1, OS.GridUnitType_Auto);
OS.ColumnDefinition_Width (col1, colWidth1);
OS.GCHandle_Free (colWidth0);
OS.GCHandle_Free (colWidth1);
OS.GCHandle_Free (upArrow);
OS.GCHandle_Free (downArrow);
OS.GCHandle_Free (row0);
OS.GCHandle_Free (row1);
OS.GCHandle_Free (rows);
OS.GCHandle_Free (col0);
OS.GCHandle_Free (col1);
OS.GCHandle_Free (columns);
OS.GCHandle_Free (gridChildren);
}
void createWidget () {
super.createWidget();
increment = 1;
pageIncrement = 10;
digits = 0;
max = 100;
value = 0;
int ptr = createDotNetString ("0", false);
OS.TextBox_Text (textHandle, ptr);
OS.GCHandle_Free (ptr);
}
/**
* 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);
}
/**
* 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 ();
//TODO
}
/**
* 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;
//TODO
}
/**
* 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 () {
return ".";
}
/**
* 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 max;
}
/**
* 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 min;
}
/**
* 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 value;
}
int getSelectionText (boolean [] parseFail) {
int textPtr = OS.TextBox_Text (textHandle);
String string = createJavaString (textPtr);
OS.GCHandle_Free (textPtr);
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 (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 ();
int text = OS.TextBox_Text (textHandle);
String string = createJavaString (text);
OS.GCHandle_Free (text);
return string;
}
/**
* 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 OS.TextBox_MaxLength (textHandle);
}
void HandleDownClick (int sender, int e) {
if (!checkEvent (e)) return;
updateSelection (-increment);
}
void HandleLostKeyboardFocus (int sender, int e) {
if (!checkEvent (e)) return;
boolean [] parseFail = new boolean [1];
getSelectionText (parseFail);
if (parseFail [0]) {
setSelection (value, false, true, false);
}
super.HandleLostKeyboardFocus (sender, e);
}
void HandlePreviewKeyDown (int sender, int e) {
super.HandlePreviewKeyDown (sender, e);
if (!checkEvent (e)) return;
int key = OS.KeyEventArgs_Key (e);
int delta = 0;
switch (key) {
case OS.Key_Return:
postEvent (SWT.DefaultSelection);
break;
case OS.Key_Down: delta -= increment; break;
case OS.Key_Up: delta += increment; break;
case OS.Key_PageDown: delta -= pageIncrement; break;
case OS.Key_PageUp: delta += pageIncrement; break;
}
if (delta != 0) {
updateSelection (delta);
}
}
void HandlePreviewTextInput (int sender, int e) {
super.HandlePreviewTextInput (sender, e);
if (!checkEvent (e)) return;
int textPtr = OS.TextCompositionEventArgs_Text (e);
String input = createJavaString(textPtr);
OS.GCHandle_Free (textPtr);
int start = OS.TextBox_SelectionStart (textHandle);
int end = start + OS.TextBox_SelectionLength (textHandle);
String text = verifyText (input, start, end);
if (text != null && !text.equals (input)) {
textPtr = createDotNetString (text, false);
OS.TextBox_SelectedText (textHandle, textPtr);
OS.GCHandle_Free (textPtr);
start = OS.TextBox_SelectionStart (textHandle);
int length = OS.TextBox_SelectionLength (textHandle);
OS.TextBox_Select (textHandle, start+length, 0);
OS.TextBox_SelectionLength (textHandle, 0);
text = null;
}
if (text == null) OS.TextCompositionEventArgs_Handled (e, true);
}
void HandleTextChanged (int sender, int e) {
if (!checkEvent (e)) return;
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (!parseFail [0]) {
if (this.value != value) setSelection(value, true, false, true);
}
sendEvent (SWT.Modify);
}
void HandleUpClick (int sender, int e) {
if (!checkEvent (e)) return;
updateSelection (increment);
}
void hookEvents () {
super.hookEvents();
//TEXT
int handler = OS.gcnew_TextCompositionEventHandler (jniRef, "HandlePreviewTextInput");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.UIElement_PreviewTextInput (textHandle, handler);
OS.GCHandle_Free (handler);
// handler = OS.gcnew_ExecutedRoutedEventHandler(jniRef, "HandlePreviewExecutedRoutedEvent");
// if (handler == 0) error (SWT.ERROR_NO_HANDLES);
// OS.CommandManager_AddPreviewExecutedHandler(handle, handler);
// OS.GCHandle_Free(handler);
handler = OS.gcnew_TextChangedEventHandler (jniRef, "HandleTextChanged");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.TextBoxBase_TextChanged (textHandle, handler);
OS.GCHandle_Free (handler);
//BUTTON
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleDownClick");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.ButtonBase_Click (downHandle, handler);
OS.GCHandle_Free (handler);
handler = OS.gcnew_RoutedEventHandler (jniRef, "HandleUpClick");
if (handler == 0) error (SWT.ERROR_NO_HANDLES);
OS.ButtonBase_Click (upHandle, handler);
OS.GCHandle_Free (handler);
}
/**
* 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 ();
//TODO
}
void releaseHandle () {
super.releaseHandle();
OS.GCHandle_Free (textHandle);
OS.GCHandle_Free (upHandle);
OS.GCHandle_Free (downHandle);
}
/**
* 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 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 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);
}
/**
* 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);
digits = value;
setSelection (this.value, false, true, false);
}
/**
* 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 ();
if (value < min) return;
max = value;
if (this.value > 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 ();
if (value > max) return;
min = value;
if (this.value < 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 ();
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) {
this.value = 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 length = OS.GetWindowTextLength (hwndText);
// string = verifyText (string, 0, length, null);
// if (string == null) return;
// }
int ptr = createDotNetString (string, false);
OS.TextBox_Text (textHandle, ptr);
OS.GCHandle_Free (ptr);
}
if (notify) postEvent (SWT.Selection);
}
/**
* 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);
OS.TextBox_MaxLength (textHandle, 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.increment = increment;
this.digits = digits;
this.min = minimum;
this.max = maximum;
setSelection (selection, true, true, false);
}
void updateSelection (int delta) {
boolean [] parseFail = new boolean [1];
int value = getSelectionText (parseFail);
if (parseFail [0]) value = this.value;
int newValue = value + delta;
if ((style & SWT.WRAP) != 0) {
if (newValue < min) newValue = max;
if (newValue > max) newValue = min;
}
newValue = Math.min (Math.max (min, newValue), max);
if (value != newValue) setSelection (newValue, true, true, true);
}
String verifyText (String string, int start, int end) {
Event event = new Event ();
event.text = string;
event.start = start;
event.end = end;
if (string.length () == 1) {
event.character = string.charAt (0);
setInputState (event, SWT.KeyDown, 0, 0);
}
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) {
if (min < 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);
if (!event.doit || isDisposed ()) return null;
return event.text;
}
}