| /******************************************************************************* |
| * 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; |
| } |
| |
| } |