| /******************************************************************************* |
| * Copyright (c) 2000, 2008 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.swt.widgets; |
| |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.internal.carbon.ControlEditTextSelectionRec; |
| import org.eclipse.swt.internal.carbon.MenuTrackingData; |
| import org.eclipse.swt.internal.carbon.OS; |
| import org.eclipse.swt.internal.carbon.CFRange; |
| import org.eclipse.swt.internal.carbon.CGRect; |
| import org.eclipse.swt.internal.carbon.Rect; |
| |
| /** |
| * Instances of this class are controls that allow the user |
| * to choose an item from a list of items, or optionally |
| * enter a new value by typing it into an editable text |
| * field. Often, <code>Combo</code>s are used in the same place |
| * where a single selection <code>List</code> widget could |
| * be used but space is limited. A <code>Combo</code> takes |
| * less space than a <code>List</code> widget and shows |
| * similar information. |
| * <p> |
| * Note: Since <code>Combo</code>s can contain both a list |
| * and an editable text field, it is possible to confuse methods |
| * which access one versus the other (compare for example, |
| * <code>clearSelection()</code> and <code>deselectAll()</code>). |
| * The API documentation is careful to indicate either "the |
| * receiver's list" or the "the receiver's text field" to |
| * distinguish between the two cases. |
| * </p><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> |
| * <dl> |
| * <dt><b>Styles:</b></dt> |
| * <dd>DROP_DOWN, READ_ONLY, SIMPLE</dd> |
| * <dt><b>Events:</b></dt> |
| * <dd>DefaultSelection, Modify, Selection, Verify</dd> |
| * </dl> |
| * <p> |
| * Note: Only one of the styles DROP_DOWN and SIMPLE may be specified. |
| * </p><p> |
| * IMPORTANT: This class is <em>not</em> intended to be subclassed. |
| * </p> |
| * |
| * @see List |
| * @see <a href="http://www.eclipse.org/swt/snippets/#combo">Combo 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> |
| */ |
| public class Combo extends Composite { |
| int menuHandle; |
| int textLimit = LIMIT; |
| String lastText = ""; |
| ControlEditTextSelectionRec selection; |
| |
| /** |
| * the operating system limit for the number of characters |
| * that the text field in an instance of this class can hold |
| */ |
| 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; |
| } |
| |
| static final String [] AX_ATTRIBUTES = { |
| OS.kAXValueAttribute, |
| OS.kAXNumberOfCharactersAttribute, |
| OS.kAXSelectedTextAttribute, |
| OS.kAXSelectedTextRangeAttribute, |
| OS.kAXStringForRangeParameterizedAttribute, |
| }; |
| |
| /** |
| * 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#DROP_DOWN |
| * @see SWT#READ_ONLY |
| * @see SWT#SIMPLE |
| * @see Widget#checkSubclass |
| * @see Widget#getStyle |
| */ |
| public Combo (Composite parent, int style) { |
| super (parent, checkStyle (style)); |
| } |
| |
| /** |
| * Adds the argument to the end of the receiver's list. |
| * |
| * @param string the new item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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 #add(String,int) |
| */ |
| public void add (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (ptr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| result = OS.AppendMenuItemTextWithCFString (menuHandle, ptr, 0, 0, null); |
| /* |
| * Feature in the Macintosh. Setting text that starts with "-" makes the |
| * menu item a separator. The fix is to clear the separator attribute. |
| */ |
| if (string.startsWith ("-")) { |
| OS.ChangeMenuItemAttributes (menuHandle, (short)OS.CountMenuItems (menuHandle), 0, OS.kMenuItemAttrSeparator); |
| } |
| } else { |
| result = OS.HIComboBoxAppendTextItem (handle, ptr, null); |
| } |
| OS.CFRelease (ptr); |
| if (result != OS.noErr) error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| |
| /** |
| * Adds the argument to the receiver's list at the given |
| * zero-relative index. |
| * <p> |
| * Note: To add an item at the end of the list, use the |
| * result of calling <code>getItemCount()</code> as the |
| * index or use <code>add(String)</code>. |
| * </p> |
| * |
| * @param string the new item |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list (inclusive)</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 #add(String) |
| */ |
| public void add (String string, int index) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = getItemCount (); |
| if (0 > index || index > count) error (SWT.ERROR_INVALID_RANGE); |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (ptr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int result; |
| int selectionIndex = -1; |
| if ((style & SWT.READ_ONLY) != 0) { |
| selectionIndex = OS.GetControlValue (handle) - 1; |
| result = OS.InsertMenuItemTextWithCFString (menuHandle, ptr, (short)index, 0, 0); |
| /* |
| * Feature in the Macintosh. Setting text that starts with "-" makes the |
| * menu item a separator. The fix is to clear the separator attribute. |
| */ |
| if (string.startsWith ("-")) { |
| OS.ChangeMenuItemAttributes (menuHandle, (short)(index + 1), 0, OS.kMenuItemAttrSeparator); |
| } |
| } else { |
| result = OS.HIComboBoxInsertTextItemAtIndex (handle, index, ptr); |
| } |
| OS.CFRelease (ptr); |
| if (result != OS.noErr) error (SWT.ERROR_ITEM_NOT_ADDED); |
| /* |
| * When inserting an item into a READ_ONLY combo at or above the selected |
| * index neither the selection index nor the text get updated. Fix is to |
| * update the selection index to be sure the displayed item matches the |
| * selected index. |
| */ |
| if (selectionIndex >= index) OS.SetControl32BitValue (handle, selectionIndex + 2); |
| } |
| |
| /** |
| * 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 user changes the receiver's selection, by sending |
| * it one of the messages defined in the <code>SelectionListener</code> |
| * interface. |
| * <p> |
| * <code>widgetSelected</code> is called when the user changes the combo's list selection. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. |
| * </p> |
| * |
| * @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 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 |
| * |
| * @since 3.1 |
| */ |
| public void addVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Verify, typedListener); |
| } |
| |
| int callFocusEventHandler (int nextHandler, int theEvent) { |
| short [] part = new short [1]; |
| if ((style & SWT.READ_ONLY) == 0) { |
| OS.GetEventParameter (theEvent, OS.kEventParamControlPart, OS.typeControlPartCode, null, 2, null, part); |
| if (part [0] == OS.kControlFocusNoPart) { |
| selection = new ControlEditTextSelectionRec (); |
| OS.GetControlData (handle, (short) OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection, null); |
| } |
| } |
| int result = super.callFocusEventHandler (nextHandler, theEvent); |
| if ((style & SWT.READ_ONLY) == 0) { |
| if (part [0] != OS.kControlFocusNoPart && selection != null) { |
| OS.SetControlData (handle, (short) OS.kControlEntireControl, OS.kControlEditTextSelectionTag, 4, selection); |
| selection = null; |
| } |
| } |
| return result; |
| } |
| |
| |
| static int checkStyle (int style) { |
| /* |
| * Feature in Windows. It is not possible to create |
| * a combo box that has a border using Windows style |
| * bits. All combo boxes draw their own border and |
| * do not use the standard Windows border styles. |
| * Therefore, no matter what style bits are specified, |
| * clear the BORDER bits so that the SWT style will |
| * match the Windows widget. |
| * |
| * The Windows behavior is currently implemented on |
| * all platforms. |
| */ |
| style &= ~SWT.BORDER; |
| |
| /* |
| * 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. |
| */ |
| style &= ~(SWT.H_SCROLL | SWT.V_SCROLL); |
| style = checkBits (style, SWT.DROP_DOWN, SWT.SIMPLE, 0, 0, 0, 0); |
| if ((style & SWT.SIMPLE) != 0) return style & ~SWT.READ_ONLY; |
| return style; |
| } |
| |
| void checkSelection () { |
| if ((style & SWT.READ_ONLY) != 0) return; |
| String newText = getText (); |
| if (newText.equals (lastText)) return; |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| setText (lastText, false); |
| newText = verifyText (newText, 0, lastText.length (), null); |
| if (newText == null) return; |
| setText (newText, false); |
| } else { |
| lastText = newText; |
| } |
| sendEvent (SWT.Modify); |
| if (isDisposed ()) return; |
| int index = indexOf (newText); |
| if (index != -1) postEvent (SWT.Selection); |
| |
| /* Send value changed notification to accessible client. */ |
| String string = OS.kAXFocusedWindowChangedNotification; |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int stringRef = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| OS.AXNotificationHIObjectNotify(stringRef, handle, 0); |
| OS.CFRelease(stringRef); |
| } |
| |
| protected void checkSubclass () { |
| if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS); |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to an empty |
| * selection starting just before the first character. If the |
| * text field is editable, this has the effect of placing the |
| * i-beam at the start of the text. |
| * <p> |
| * Note: To clear the selected items in the receiver's list, |
| * use <code>deselectAll()</code>. |
| * </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> |
| * |
| * @see #deselectAll |
| */ |
| public void clearSelection () { |
| checkWidget(); |
| if ((style & SWT.READ_ONLY) == 0) { |
| Point selection = getSelection (); |
| selection.y = selection.x; |
| setSelection (selection); |
| } |
| } |
| |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| int width = 0, height = 0; |
| int [] ptr = new int [1]; |
| if ((style & SWT.READ_ONLY) != 0) { |
| int index = OS.GetControlValue (handle) - 1; |
| OS.CopyMenuItemTextAsCFString (menuHandle, (short)(index+1), ptr); |
| } else { |
| OS.GetControlData (handle, (short)OS.kHIComboBoxEditTextPart, OS.kControlEditTextCFStringTag, 4, ptr, null); |
| } |
| Point size = textExtent (ptr [0], 0); |
| if (ptr [0] != 0) OS.CFRelease (ptr [0]); |
| width = Math.max (width, size.x); |
| height = Math.max (height, size.y); |
| int count; |
| if ((style & SWT.READ_ONLY) != 0) { |
| count = OS.CountMenuItems (menuHandle); |
| } else { |
| count = OS.HIComboBoxGetItemCount (handle); |
| } |
| for (int i=0; i<count; i++) { |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| result = OS.CopyMenuItemTextAsCFString(menuHandle, (short)(i+1), ptr); |
| } else { |
| result = OS.HIComboBoxCopyTextItemAtIndex (handle, i, ptr); |
| } |
| if (result == OS.noErr) { |
| size = textExtent (ptr [0], 0); |
| width = Math.max (width, size.x); |
| OS.CFRelease (ptr [0]); |
| } |
| } |
| int [] metric = new int [1]; |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.GetThemeMetric (OS.kThemeMetricDisclosureButtonWidth, metric); |
| width += metric [0]; |
| //TODO |
| width += 13; |
| } else { |
| OS.GetThemeMetric (OS.kThemeMetricComboBoxLargeDisclosureWidth, metric); |
| width += metric [0]; |
| } |
| OS.GetThemeMetric (OS.kThemeMetricEditTextWhitespace, metric); |
| width += metric [0] * 2; |
| height += metric [0] * 2; |
| Rect inset = getInset (); |
| width += inset.left + inset.right; |
| height += inset.top + inset.bottom; |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (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> |
| * |
| * @since 2.1 |
| */ |
| public void copy () { |
| checkWidget (); |
| Point selection = getSelection (); |
| if (selection.x == selection.y) return; |
| copyToClipboard (getText (selection.x, selection.y)); |
| } |
| |
| void createHandle () { |
| if ((style & SWT.READ_ONLY) != 0) { |
| int [] outControl = new int [1]; |
| int window = OS.GetControlOwner (parent.handle); |
| /* |
| * From ControlDefinitions.h: |
| * |
| * Passing in a menu ID of -12345 causes the popup not to try and get the menu from a |
| * resource. Instead, you can build the menu and later stuff the MenuRef field in |
| * the popup data information. |
| */ |
| OS.CreatePopupButtonControl(window, null, 0, (short)-12345, false, (short)0, (short)0, 0, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| int[] menuRef= new int [1]; |
| OS.CreateNewMenu ((short) 0, 0, menuRef); |
| if (menuRef [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| menuHandle = menuRef[0]; |
| OS.SetControlPopupMenuHandle (handle, menuHandle); |
| OS.SetControl32BitMaximum (handle, 0x7FFF); |
| } else { |
| int [] outControl = new int [1]; |
| CGRect rect = new CGRect (); |
| int inAttributes = OS.kHIComboBoxAutoSizeListAttribute; |
| /* |
| * The following code is intentionally commented. |
| * Auto completion does not allow the user to change |
| * case of the text in a combo box. |
| */ |
| // inAttributes |= OS.kHIComboBoxAutoCompletionAttribute; |
| OS.HIComboBoxCreate(rect, 0, null, 0, inAttributes, outControl); |
| if (outControl [0] == 0) error (SWT.ERROR_NO_HANDLES); |
| handle = outControl [0]; |
| OS.SetControlData (handle, (short)OS.kHIComboBoxEditTextPart, OS.kTXNDrawCaretWhenInactiveTag, 4, new byte [ ]{0}); |
| OS.HIViewSetVisible (handle, true); |
| } |
| } |
| |
| /** |
| * 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> |
| * |
| * @since 2.1 |
| */ |
| public void cut () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| Point selection = getSelection (); |
| if (selection.x == selection.y) return; |
| int start = selection.x, end = selection.y; |
| String text = getText (); |
| String leftText = text.substring (0, start); |
| String rightText = text.substring (end, text.length ()); |
| String oldText = text.substring (start, end); |
| String newText = ""; |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| newText = verifyText (newText, start, end, null); |
| if (newText == null) return; |
| } |
| char [] buffer = new char [oldText.length ()]; |
| oldText.getChars (0, buffer.length, buffer, 0); |
| copyToClipboard (buffer); |
| setText (leftText + newText + rightText, false); |
| start += newText.length (); |
| setSelection (new Point (start, start)); |
| sendEvent (SWT.Modify); |
| } |
| |
| Color defaultBackground () { |
| return display.getSystemColor (SWT.COLOR_LIST_BACKGROUND); |
| } |
| |
| Color defaultForeground () { |
| return display.getSystemColor (SWT.COLOR_LIST_FOREGROUND); |
| } |
| |
| /** |
| * Deselects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already deselected, it remains |
| * deselected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to deselect |
| * |
| * @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 deselect (int index) { |
| checkWidget (); |
| if (index == -1) return; |
| if (index == getSelectionIndex ()) { |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.SetControl32BitValue (handle, 0); |
| sendEvent (SWT.Modify); |
| } else { |
| setText (""); |
| } |
| } |
| } |
| |
| /** |
| * Deselects all selected items in the receiver's list. |
| * <p> |
| * Note: To clear the selection in the receiver's text field, |
| * use <code>clearSelection()</code>. |
| * </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> |
| * |
| * @see #clearSelection |
| */ |
| public void deselectAll () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.SetControl32BitValue (handle, 0); |
| sendEvent (SWT.Modify); |
| } else { |
| setText (""); |
| } |
| } |
| |
| void destroyWidget () { |
| /* |
| * Bug in the Macintosh. Carbon segments fault if the combo box has |
| * keyboard focus and it is disposed or its parent is disposed because |
| * there is an outstanding timer that runs after the widget is dispoed. |
| * The fix is to remove the combo box from its parent and dispose it when |
| * the display is idle. |
| * |
| * NOTE: The problem does not happen when the window is disposed. |
| */ |
| if ((getShell ().state & DISPOSE_SENT) != 0) { |
| super.destroyWidget (); |
| } else { |
| releaseHandle (); |
| } |
| } |
| |
| String [] getAxAttributes () { |
| return AX_ATTRIBUTES; |
| } |
| |
| /** |
| * Returns the item at the given, zero-relative index in the |
| * receiver's list. Throws an exception if the index is out |
| * of range. |
| * |
| * @param index the index of the item to return |
| * @return the item at the given index |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 String getItem (int index) { |
| checkWidget (); |
| int count = getItemCount (); |
| if (0 > index || index >= count) error (SWT.ERROR_INVALID_RANGE); |
| int[] ptr = new int[1]; |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| result = OS.CopyMenuItemTextAsCFString(menuHandle, (short)(index+1), ptr); |
| } else { |
| result = OS.HIComboBoxCopyTextItemAtIndex (handle, index, ptr); |
| } |
| if (result != OS.noErr) error(SWT.ERROR_CANNOT_GET_ITEM); |
| int length = OS.CFStringGetLength (ptr [0]); |
| char [] buffer= new char [length]; |
| CFRange range = new CFRange (); |
| range.length = length; |
| OS.CFStringGetCharacters (ptr [0], range, buffer); |
| OS.CFRelease (ptr [0]); |
| return new String (buffer); |
| } |
| |
| /** |
| * Returns the number of items contained in the receiver's list. |
| * |
| * @return the number of items |
| * |
| * @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 getItemCount () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return OS.CountMenuItems (menuHandle); |
| } else { |
| return OS.HIComboBoxGetItemCount (handle); |
| } |
| } |
| |
| /** |
| * Returns the height of the area which would be used to |
| * display <em>one</em> of the items in the receiver's list. |
| * |
| * @return the height of one item |
| * |
| * @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 getItemHeight () { |
| checkWidget (); |
| //TODO - not supported by the OS |
| return 26; |
| } |
| |
| /** |
| * Returns a (possibly empty) array of <code>String</code>s which are |
| * the items in the receiver's list. |
| * <p> |
| * Note: This is not the actual structure used by the receiver |
| * to maintain its list of items, so modifying the array will |
| * not affect the receiver. |
| * </p> |
| * |
| * @return the items in the receiver's list |
| * |
| * @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 String [] getItems () { |
| checkWidget (); |
| int count = getItemCount (); |
| String [] result = new String [count]; |
| for (int i=0; i<count; i++) result [i] = getItem (i); |
| return result; |
| } |
| |
| /** |
| * Returns <code>true</code> if the receiver's list is visible, |
| * and <code>false</code> otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, this method |
| * may still indicate that it is considered visible even though |
| * it may not actually be showing. |
| * </p> |
| * |
| * @return the receiver's list's visibility state |
| * |
| * @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 boolean getListVisible () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| MenuTrackingData outData = new MenuTrackingData (); |
| return OS.GetMenuTrackingData (menuHandle, outData) == OS.noErr; |
| } else { |
| if (OS.VERSION >= 0x1040) { |
| return OS.HIComboBoxIsListVisible (handle); |
| } |
| return false; |
| } |
| } |
| |
| int getMininumHeight () { |
| return getTextHeight (); |
| } |
| |
| String getNameText () { |
| return getText (); |
| } |
| |
| /** |
| * Returns the orientation of the receiver. |
| * |
| * @return the orientation style |
| * |
| * @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 2.1.2 |
| */ |
| public int getOrientation () { |
| checkWidget(); |
| return style & (SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT); |
| } |
| |
| /** |
| * Returns a <code>Point</code> whose x coordinate is the |
| * character position representing the start of the selection |
| * in the receiver's text field, and whose y coordinate is the |
| * character position representing the end of the selection. |
| * An "empty" selection is indicated by the x and y coordinates |
| * having the same value. |
| * <p> |
| * Indexing is zero based. The range of a selection is from |
| * 0..N where N is the number of characters in the widget. |
| * </p> |
| * |
| * @return a point representing the selection start and end |
| * |
| * @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 Point getSelection () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return new Point (0, getCharCount ()); |
| } else { |
| ControlEditTextSelectionRec selection; |
| if (this.selection != null) { |
| selection = this.selection; |
| } else { |
| selection = new ControlEditTextSelectionRec (); |
| OS.GetControlData (handle, (short) OS.kHIComboBoxEditTextPart, OS.kControlEditTextSelectionTag, 4, selection, null); |
| } |
| return new Point (selection.selStart, selection.selEnd); |
| } |
| } |
| |
| /** |
| * Returns the zero-relative index of the item which is currently |
| * selected in the receiver's list, or -1 if no item is selected. |
| * |
| * @return the index of the selected item |
| * |
| * @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 getSelectionIndex () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return OS.GetControlValue (handle) - 1; |
| } else { |
| return indexOf (getText ()); |
| } |
| } |
| |
| /** |
| * 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> |
| */ |
| public String getText () { |
| checkWidget (); |
| return new String (getText (0, -1)); |
| } |
| |
| char [] getText (int start, int end) { |
| int result; |
| int [] ptr = new int [1]; |
| if ((style & SWT.READ_ONLY) != 0) { |
| int index = OS.GetControlValue (handle) - 1; |
| result = OS.CopyMenuItemTextAsCFString (menuHandle, (short)(index+1), ptr); |
| } else { |
| int [] actualSize = new int [1]; |
| result = OS.GetControlData (handle, (short)OS.kHIComboBoxEditTextPart, OS.kControlEditTextCFStringTag, 4, ptr, actualSize); |
| } |
| if (result != OS.noErr) return new char [0]; |
| CFRange range = new CFRange (); |
| range.location = start; |
| if (end == -1) { |
| int length = OS.CFStringGetLength (ptr [0]); |
| range.length = length - start; |
| } else { |
| range.length = end - start; |
| } |
| char [] buffer= new char [range.length]; |
| OS.CFStringGetCharacters (ptr [0], range, buffer); |
| OS.CFRelease (ptr [0]); |
| return buffer; |
| } |
| |
| /** |
| * Returns the height of the receivers's text field. |
| * |
| * @return the text height |
| * |
| * @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 getTextHeight () { |
| checkWidget(); |
| //TODO - not supported by the OS |
| return 26; |
| } |
| |
| /** |
| * 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>Combo.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 |
| */ |
| public int getTextLimit () { |
| checkWidget(); |
| return textLimit; |
| } |
| |
| /** |
| * Gets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @return the number of items that are visible |
| * |
| * @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 3.0 |
| */ |
| public int getVisibleItemCount () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| return getItemCount (); |
| } else { |
| int [] buffer = new int [1]; |
| OS.GetControlData (handle, (short) OS.kControlEntireControl, OS.kHIComboBoxNumVisibleItemsTag, 4, buffer, null); |
| return buffer [0]; |
| } |
| } |
| |
| void hookEvents () { |
| super.hookEvents (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| int commandProc = display.commandProc; |
| int [] mask = new int [] { |
| OS.kEventClassCommand, OS.kEventProcessCommand, |
| }; |
| int menuTarget = OS.GetMenuEventTarget (menuHandle); |
| OS.InstallEventHandler (menuTarget, commandProc, mask.length / 2, mask, handle, null); |
| } |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * (index 0) until an item is found that is equal to the |
| * argument, and returns the index of that item. If no item |
| * is found, returns -1. |
| * |
| * @param string the search item |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| */ |
| public int indexOf (String string) { |
| return indexOf (string, 0); |
| } |
| |
| /** |
| * Searches the receiver's list starting at the given, |
| * zero-relative index until an item is found that is equal |
| * to the argument, and returns the index of that item. If |
| * no item is found or the starting index is out of range, |
| * returns -1. |
| * |
| * @param string the search item |
| * @param start the zero-relative index at which to begin the search |
| * @return the index of the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| */ |
| public int indexOf (String string, int start) { |
| checkWidget(); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = getItemCount (); |
| if (!(0 <= start && start < count)) return -1; |
| for (int i=start; i<count; i++) { |
| if (string.equals (getItem (i))) { |
| return i; |
| } |
| } |
| return -1; |
| } |
| |
| int getCharCount () { |
| // checkWidget (); |
| int [] ptr = new int [1]; |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| int index = OS.GetControlValue (handle) - 1; |
| result = OS.CopyMenuItemTextAsCFString(menuHandle, (short)(index+1), ptr); |
| } else { |
| int [] actualSize = new int [1]; |
| result = OS.GetControlData (handle, (short)OS.kHIComboBoxEditTextPart, OS.kControlEditTextCFStringTag, 4, ptr, actualSize); |
| } |
| if (result != OS.noErr) return 0; |
| int length = OS.CFStringGetLength (ptr [0]); |
| OS.CFRelease (ptr [0]); |
| return length; |
| } |
| |
| Rect getInset () { |
| return display.comboInset; |
| } |
| |
| int kEventAccessibleGetNamedAttribute (int nextHandler, int theEvent, int userData) { |
| int code = OS.eventNotHandledErr; |
| if ((style & SWT.READ_ONLY) == 0) { |
| int [] stringRef = new int [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamAccessibleAttributeName, OS.typeCFStringRef, null, 4, null, stringRef); |
| int length = 0; |
| if (stringRef [0] != 0) length = OS.CFStringGetLength (stringRef [0]); |
| char [] buffer = new char [length]; |
| CFRange range = new CFRange (); |
| range.length = length; |
| OS.CFStringGetCharacters (stringRef [0], range, buffer); |
| String attributeName = new String(buffer); |
| if (attributeName.equals (OS.kAXValueAttribute)) { |
| buffer = getText(0, -1); |
| stringRef [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (stringRef [0] != 0) { |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, stringRef); |
| OS.CFRelease(stringRef [0]); |
| code = OS.noErr; |
| } |
| } else if (attributeName.equals (OS.kAXNumberOfCharactersAttribute)) { |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeSInt32, 4, new int [] {getCharCount()}); |
| code = OS.noErr; |
| } else if (attributeName.equals (OS.kAXSelectedTextAttribute)) { |
| Point sel = getSelection (); |
| buffer = getText(sel.x, sel.y); |
| stringRef [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (stringRef [0] != 0) { |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, stringRef); |
| OS.CFRelease(stringRef [0]); |
| code = OS.noErr; |
| } |
| } else if (attributeName.equals (OS.kAXSelectedTextRangeAttribute)) { |
| Point sel = getSelection (); |
| range = new CFRange(); |
| range.location = sel.x; |
| range.length = sel.y - sel.x; |
| int valueRef = OS.AXValueCreate(OS.kAXValueCFRangeType, range); |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFTypeRef, 4, new int [] {valueRef}); |
| OS.CFRelease(valueRef); |
| code = OS.noErr; |
| } else if (attributeName.equals (OS.kAXStringForRangeParameterizedAttribute)) { |
| int valueRef [] = new int [1]; |
| int status = OS.GetEventParameter (theEvent, OS.kEventParamAccessibleAttributeParameter, OS.typeCFTypeRef, null, 4, null, valueRef); |
| if (status == OS.noErr) { |
| range = new CFRange(); |
| boolean ok = OS.AXValueGetValue(valueRef[0], OS.kAXValueCFRangeType, range); |
| if (ok) { |
| buffer = getText (range.location, range.location + range.length); |
| stringRef [0] = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (stringRef [0] != 0) { |
| OS.SetEventParameter (theEvent, OS.kEventParamAccessibleAttributeValue, OS.typeCFStringRef, 4, stringRef); |
| OS.CFRelease(stringRef [0]); |
| code = OS.noErr; |
| } |
| } |
| } |
| } |
| } |
| if (accessible != null) { |
| code = accessible.internal_kEventAccessibleGetNamedAttribute (nextHandler, theEvent, code); |
| } |
| return code; |
| } |
| |
| int kEventControlActivate (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventControlActivate (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| /* |
| * Feature in the Macintosh. When a combo box gets |
| * kEventControlActivate, it starts the caret blinking. |
| * Because there is no clipping on the Macintosh, the |
| * caret may blink through a widget that is obscured. |
| * The fix is to avoid running the default handler. |
| */ |
| return OS.noErr; |
| } |
| |
| int kEventProcessCommand (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventProcessCommand (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the modify |
| * event. If this happens, end the processing of the |
| * Windows message by returning zero as the result of |
| * the window proc. |
| * |
| * Note: this should be a send event, but selection is updated |
| * right way. |
| */ |
| postEvent (SWT.Modify); |
| if (isDisposed ()) return OS.eventNotHandledErr; |
| postEvent (SWT.Selection); |
| return OS.eventNotHandledErr; |
| } |
| |
| int kEventRawKeyPressed (int nextHandler, int theEvent, int userData) { |
| /* |
| * Feature in the Macintosh. The combo box widget consumes the |
| * kEventRawKeyDown event when the up and down arrow keys are |
| * pressed, causing kEventTextInputUnicodeForKeyEvent not |
| * to be sent. The fix is to handle these keys in kEventRawKeyDown. |
| * |
| * NOTE: This was fixed in OS X 10.4. |
| */ |
| if (OS.VERSION < 0x1040) { |
| int [] keyCode = new int [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamKeyCode, OS.typeUInt32, null, keyCode.length * 4, null, keyCode); |
| switch (keyCode [0]) { |
| case 126: /* Up arrow */ |
| case 125: /* Down arrow */ |
| if (!sendKeyEvent (SWT.KeyDown, theEvent)) return OS.noErr; |
| break; |
| } |
| } |
| return OS.eventNotHandledErr; |
| } |
| |
| int kEventControlSetFocusPart (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventControlSetFocusPart (nextHandler, theEvent, userData); |
| if (result == OS.noErr) { |
| if ((style & SWT.READ_ONLY) == 0) { |
| short [] part = new short [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamControlPart, OS.typeControlPartCode, null, 2, null, part); |
| if (part [0] != OS.kControlFocusNoPart) display.focusCombo = this; |
| } |
| } |
| return result; |
| } |
| |
| int kEventUnicodeKeyPressed (int nextHandler, int theEvent, int userData) { |
| int result = super.kEventUnicodeKeyPressed (nextHandler, theEvent, userData); |
| if (result == OS.noErr) return result; |
| int [] keyboardEvent = new int [1]; |
| OS.GetEventParameter (theEvent, OS.kEventParamTextInputSendKeyboardEvent, OS.typeEventRef, null, keyboardEvent.length * 4, null, keyboardEvent); |
| int [] keyCode = new int [1]; |
| OS.GetEventParameter (keyboardEvent [0], OS.kEventParamKeyCode, OS.typeUInt32, null, keyCode.length * 4, null, keyCode); |
| |
| String string = OS.kAXValueChangedNotification; |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int stringRef = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| OS.AXNotificationHIObjectNotify(stringRef, handle, 0); |
| OS.CFRelease(stringRef); |
| string = OS.kAXSelectedTextChangedNotification; |
| buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| stringRef = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| OS.AXNotificationHIObjectNotify(stringRef, handle, 0); |
| OS.CFRelease(stringRef); |
| |
| if (hooks (SWT.Verify) || filters (SWT.Verify) |
| || hooks (SWT.Modify) || filters (SWT.Modify)) { |
| int [] modifiers = new int [1]; |
| OS.GetEventParameter (keyboardEvent [0], OS.kEventParamKeyModifiers, OS.typeUInt32, null, 4, null, modifiers); |
| if (modifiers [0] == OS.cmdKey) { |
| switch (keyCode [0]) { |
| case 7: /* X */ |
| cut (); |
| return OS.noErr; |
| case 9: /* V */ |
| paste (); |
| return OS.noErr; |
| } |
| } |
| } |
| switch (keyCode [0]) { |
| case 76: /* KP Enter */ |
| case 36: { /* Return */ |
| postEvent (SWT.DefaultSelection); |
| break; |
| } |
| } |
| result = OS.CallNextEventHandler (nextHandler, theEvent); |
| lastText = getText (); |
| return result; |
| } |
| |
| /** |
| * 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> |
| * |
| * @since 2.1 |
| */ |
| public void paste () { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) return; |
| Point selection = getSelection (); |
| int start = selection.x, end = selection.y; |
| String text = getText (); |
| String leftText = text.substring (0, start); |
| String rightText = text.substring (end, text.length ()); |
| String newText = getClipboardText (); |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| newText = verifyText (newText, start, end, null); |
| if (newText == null) return; |
| } |
| if (textLimit != LIMIT) { |
| int charCount = text.length (); |
| if (charCount - (end - start) + newText.length() > textLimit) { |
| newText = newText.substring(0, textLimit - charCount + (end - start)); |
| } |
| } |
| setText (leftText + newText + rightText, false); |
| start += newText.length (); |
| setSelection (new Point (start, start)); |
| sendEvent (SWT.Modify); |
| } |
| |
| boolean pollTrackEvent() { |
| return true; |
| } |
| |
| void releaseHandle () { |
| /* |
| * Bug in the Macintosh. Carbon segments fault if the combo box has |
| * keyboard focus and it is disposed or its parent is disposed because |
| * there is an outstanding timer that runs after the widget is dispoed. |
| * The fix is to remove the combo box from its parent and dispose it when |
| * the display is idle. |
| * |
| * NOTE: The problem does not happen when the window is disposed. |
| */ |
| if ((getShell ().state & DISPOSE_SENT) == 0) { |
| display.addToDisposeWindow (handle); |
| } |
| super.releaseHandle (); |
| } |
| |
| void releaseWidget () { |
| super.releaseWidget (); |
| if (display.focusCombo == this) display.focusCombo = null; |
| if (menuHandle != 0) { |
| OS.DisposeMenu (menuHandle); |
| } |
| menuHandle = 0; |
| } |
| |
| /** |
| * Removes the item from the receiver's list at the given |
| * zero-relative index. |
| * |
| * @param index the index for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 remove (int index) { |
| checkWidget (); |
| if (index == -1) error (SWT.ERROR_INVALID_RANGE); |
| int count = getItemCount (); |
| if (0 > index || index >= count) error (SWT.ERROR_INVALID_RANGE); |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.DeleteMenuItems (menuHandle, (short)(index+1), 1); |
| if (index == OS.GetControlValue (handle) - 1) { |
| OS.SetControl32BitValue (handle, 0); |
| } |
| } else { |
| OS.HIComboBoxRemoveItemAtIndex (handle, index); |
| } |
| } |
| |
| /** |
| * Removes the items from the receiver's list which are |
| * between the given zero-relative start and end |
| * indices (inclusive). |
| * |
| * @param start the start of the range |
| * @param end the end of the range |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if either the start or end are not between 0 and the number of elements in the list minus 1 (inclusive)</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 remove (int start, int end) { |
| checkWidget(); |
| if (start > end) return; |
| int count = getItemCount (); |
| if (!(0 <= start && start <= end && end < count)) { |
| error (SWT.ERROR_INVALID_RANGE); |
| } |
| int newEnd = Math.min (end, count - 1); |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.DeleteMenuItems (menuHandle, (short)(start+1), newEnd-start+1); |
| int index = OS.GetControlValue (handle) - 1; |
| if (start <= index && index <= end) { |
| OS.SetControl32BitValue (handle, 0); |
| } |
| } else { |
| for (int i=newEnd; i>=start; i--) { |
| OS.HIComboBoxRemoveItemAtIndex (handle, i); |
| } |
| } |
| } |
| |
| /** |
| * Searches the receiver's list starting at the first item |
| * until an item is found that is equal to the argument, |
| * and removes that item from the list. |
| * |
| * @param string the item to remove |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if the string is not found in the list</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 remove (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int index = indexOf (string, 0); |
| if (index == -1) error (SWT.ERROR_INVALID_ARGUMENT); |
| remove (index); |
| } |
| |
| /** |
| * Removes all of the items from the receiver's list and clear the |
| * contents of receiver's text field. |
| * <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 removeAll () { |
| checkWidget (); |
| int count = getItemCount (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.DeleteMenuItems (menuHandle, (short)1, count); |
| OS.SetControl32BitValue (handle, 0); |
| } else { |
| setText ("", true); |
| if (count > 0) { |
| for (int i=count-1; i>=0; i--) { |
| OS.HIComboBoxRemoveItemAtIndex (handle, i); |
| } |
| } |
| } |
| } |
| |
| /** |
| * 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 user changes the receiver's selection. |
| * |
| * @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 |
| * |
| * @since 3.1 |
| */ |
| public void removeVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if (eventTable == null) return; |
| eventTable.unhook (SWT.Verify, listener); |
| } |
| |
| /** |
| * Selects the item at the given zero-relative index in the receiver's |
| * list. If the item at the index was already selected, it remains |
| * selected. Indices that are out of range are ignored. |
| * |
| * @param index the index of the item to select |
| * |
| * @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 select (int index) { |
| checkWidget (); |
| int count = getItemCount (); |
| if (0 <= index && index < count) { |
| if ((style & SWT.READ_ONLY) != 0) { |
| OS.SetControl32BitValue (handle, index + 1); |
| sendEvent (SWT.Modify); |
| } else { |
| setText (getItem (index), true); |
| } |
| } |
| } |
| |
| boolean sendKeyEvent (int type, Event event) { |
| if (!super.sendKeyEvent (type, event)) { |
| return false; |
| } |
| if (type != SWT.KeyDown) return true; |
| if ((style & SWT.READ_ONLY) != 0) return true; |
| if (event.character == 0) return true; |
| if ((event.stateMask & SWT.COMMAND) != 0) return true; |
| String oldText = "", newText = ""; |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| int charCount = getCharCount (); |
| Point selection = getSelection (); |
| int start = selection.x, end = selection.y; |
| switch (event.character) { |
| case SWT.BS: |
| if (start == end) { |
| if (start == 0) return true; |
| start = Math.max (0, start - 1); |
| } |
| break; |
| case SWT.DEL: |
| if (start == end) { |
| if (start == charCount) return true; |
| end = Math.min (end + 1, charCount); |
| } |
| break; |
| case SWT.CR: |
| return true; |
| default: |
| if (event.character != '\t' && event.character < 0x20) return true; |
| oldText = new String (new char [] {event.character}); |
| } |
| newText = verifyText (oldText, start, end, event); |
| if (newText == null) return false; |
| if (charCount - (end - start) + newText.length () > textLimit) { |
| return false; |
| } |
| if (newText != oldText) { |
| String text = getText (); |
| String leftText = text.substring (0, start); |
| String rightText = text.substring (end, text.length ()); |
| setText (leftText + newText + rightText, false); |
| start += newText.length (); |
| setSelection (new Point (start, start)); |
| } |
| } |
| /* |
| * Post the modify event so that the character will be inserted |
| * into the widget when the modify event is delivered. Normally, |
| * modify events are sent but it is safe to post the event here |
| * because this method is called from the event loop. |
| */ |
| postEvent (SWT.Modify); |
| return newText == oldText; |
| } |
| |
| void setBackground (int control, float [] color) { |
| if ((style & SWT.READ_ONLY) == 0) { |
| if (color == null) color = defaultBackground ().handle; |
| } |
| super.setBackground (control, color); |
| } |
| |
| int setBounds (int x, int y, int width, int height, boolean move, boolean resize, boolean events) { |
| if ((style & SWT.READ_ONLY) != 0) { |
| return super.setBounds (x, y, width, height, move, resize, events); |
| } |
| /* |
| * Bug in the Macintosh. When the caret is moved, |
| * the combo widget scrolls to show the new location. |
| * This means that the combo widget may be scrolled |
| * to the left in order to show the caret when the |
| * widget is not large enough to show both the caret |
| * location and all the text. Unfortunately, when |
| * the widget is resized such that all the text and |
| * the caret could be visible, the Macintosh does not |
| * scroll the widget back. The fix is to save the |
| * current selection, reset the text and then restore |
| * the selection. This will cause the widget |
| * to recompute the left scroll position. |
| */ |
| Rect inset = getInset (); |
| Rectangle rect = getBounds (); |
| int oldWidth = rect.width - inset.left - inset.right; |
| int result = super.setBounds (x, y, width, height, move, resize, events); |
| if (oldWidth == 0 && width > 0) { |
| Point selection = getSelection (); |
| setText (getText (), false); |
| setSelection (selection); |
| } |
| return result; |
| } |
| |
| /** |
| * Sets the text of the item in the receiver's list at the given |
| * zero-relative index to the string argument. |
| * |
| * @param index the index for the item |
| * @param string the new text for the item |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</li> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| */ |
| public void setItem (int index, String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| int count = getItemCount (); |
| if (0 > index || index >= count) error (SWT.ERROR_INVALID_RANGE); |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (ptr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| result = OS.SetMenuItemTextWithCFString (menuHandle, (short)(index+1), ptr); |
| /* |
| * Feature in the Macintosh. Setting text that starts with "-" makes the |
| * menu item a separator. The fix is to clear the separator attribute. |
| */ |
| if (string.startsWith ("-")) { |
| OS.ChangeMenuItemAttributes (menuHandle, (short)(index+1), 0, OS.kMenuItemAttrSeparator); |
| } |
| } else { |
| result = OS.HIComboBoxInsertTextItemAtIndex (handle, index, ptr); |
| OS.HIComboBoxRemoveItemAtIndex (handle, index+1); |
| } |
| OS.CFRelease(ptr); |
| if (result != OS.noErr) error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| |
| /** |
| * Sets the receiver's list to be the given array of items. |
| * |
| * @param items the array of items |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the items array is null</li> |
| * <li>ERROR_INVALID_ARGUMENT - if an item in the items array 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> |
| */ |
| public void setItems (String [] items) { |
| checkWidget(); |
| if (items == null) error (SWT.ERROR_NULL_ARGUMENT); |
| for (int i=0; i<items.length; i++) { |
| if (items [i] == null) error (SWT.ERROR_INVALID_ARGUMENT); |
| } |
| removeAll(); |
| if (items.length == 0) return; |
| for (int i= 0; i < items.length; i++) { |
| String string = items[i]; |
| char [] buffer = new char [string.length ()]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (ptr == 0) error (SWT.ERROR_ITEM_NOT_ADDED); |
| int result; |
| if ((style & SWT.READ_ONLY) != 0) { |
| result = OS.AppendMenuItemTextWithCFString (menuHandle, ptr, 0, 0, null); |
| /* |
| * Feature in the Macintosh. Setting text that starts with "-" makes the |
| * menu item a separator. The fix is to clear the separator attribute. |
| */ |
| if (string.startsWith ("-")) { |
| OS.ChangeMenuItemAttributes (menuHandle, (short)(i + 1), 0, OS.kMenuItemAttrSeparator); |
| } |
| } else { |
| int [] outIndex = new int[1]; |
| result = OS.HIComboBoxAppendTextItem (handle, ptr, outIndex); |
| } |
| OS.CFRelease(ptr); |
| if (result != OS.noErr) error (SWT.ERROR_ITEM_NOT_ADDED); |
| } |
| } |
| |
| /** |
| * Marks the receiver's list as visible if the argument is <code>true</code>, |
| * and marks it invisible otherwise. |
| * <p> |
| * If one of the receiver's ancestors is not visible or some |
| * other condition makes the receiver not visible, marking |
| * it visible may not actually cause it to be displayed. |
| * </p> |
| * |
| * @param visible the new visibility state |
| * |
| * @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 void setListVisible (boolean visible) { |
| checkWidget (); |
| if ((style & SWT.READ_ONLY) != 0) { |
| if (visible) { |
| OS.HIViewSimulateClick (handle, (short) 0, 0, null); |
| } else { |
| OS.CancelMenuTracking (menuHandle, true, 0); |
| } |
| } else { |
| if (OS.VERSION >= 0x1040) { |
| OS.HIComboBoxSetListVisible (handle, visible); |
| } |
| } |
| } |
| |
| /** |
| * Sets the orientation of the receiver, which must be one |
| * of the constants <code>SWT.LEFT_TO_RIGHT</code> or <code>SWT.RIGHT_TO_LEFT</code>. |
| * <p> |
| * |
| * @param orientation new orientation style |
| * |
| * @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 2.1.2 |
| */ |
| public void setOrientation (int orientation) { |
| checkWidget(); |
| } |
| |
| /** |
| * Sets the selection in the receiver's text field to the |
| * range specified by the argument whose x coordinate is the |
| * start of the selection and whose y coordinate is the end |
| * of the selection. |
| * |
| * @param selection a point representing the new selection start and end |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the point 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> |
| */ |
| public void setSelection (Point selection) { |
| checkWidget (); |
| if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); |
| if ((style & SWT.READ_ONLY) == 0) { |
| int length = getCharCount (); |
| int start = selection.x, end = selection.y; |
| ControlEditTextSelectionRec sel = new ControlEditTextSelectionRec (); |
| sel.selStart = (short) Math.min (Math.max (Math.min (start, end), 0), length); |
| sel.selEnd = (short) Math.min (Math.max (Math.max (start, end), 0), length); |
| if (hasFocus ()) { |
| OS.SetControlData (handle, OS.kHIComboBoxEditTextPart, OS.kControlEditTextSelectionTag, 4, sel); |
| } else { |
| this.selection = sel; |
| } |
| } |
| } |
| |
| /** |
| * Sets the contents of the receiver's text field to the |
| * given string. |
| * <p> |
| * Note: The text field in a <code>Combo</code> is typically |
| * only capable of displaying a single line of text. Thus, |
| * setting the text to a string containing line breaks or |
| * other special characters will probably cause it to |
| * display incorrectly. |
| * </p> |
| * |
| * @param string the new text |
| * |
| * @exception IllegalArgumentException <ul> |
| * <li>ERROR_NULL_ARGUMENT - if the string 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> |
| */ |
| public void setText (String string) { |
| checkWidget (); |
| if (string == null) error (SWT.ERROR_NULL_ARGUMENT); |
| setText (string, true); |
| } |
| |
| void setText (String string, boolean notify) { |
| if (notify) { |
| if (hooks (SWT.Verify) || filters (SWT.Verify)) { |
| string = verifyText (string, 0, getCharCount (), null); |
| if (string == null) return; |
| } |
| } |
| if ((style & SWT.READ_ONLY) != 0) { |
| int index = indexOf (string); |
| if (index != -1 && index != getSelectionIndex ()) { |
| select (index); |
| if (notify) sendEvent (SWT.Modify); |
| } |
| } else { |
| char [] buffer = new char [Math.min(string.length (), textLimit)]; |
| string.getChars (0, buffer.length, buffer, 0); |
| int ptr = OS.CFStringCreateWithCharacters (OS.kCFAllocatorDefault, buffer, buffer.length); |
| if (ptr == 0) error (SWT.ERROR_CANNOT_SET_TEXT); |
| lastText = string; |
| OS.SetControlData (handle, OS.kHIComboBoxEditTextPart, OS.kControlEditTextCFStringTag, 4, new int[] {ptr}); |
| OS.CFRelease (ptr); |
| selection = null; |
| if (notify) sendEvent (SWT.Modify); |
| } |
| } |
| |
| /** |
| * 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(Combo.LIMIT)</code>. |
| * Specifying a limit value larger than <code>Combo.LIMIT</code> sets the |
| * receiver's limit to <code>Combo.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 |
| */ |
| public void setTextLimit (int limit) { |
| checkWidget (); |
| if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); |
| textLimit = limit; |
| } |
| |
| /** |
| * Sets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * <p> |
| * Note: This operation is a hint and is not supported on |
| * platforms that do not have this concept. |
| * </p> |
| * |
| * @param count the new number of items to be visible |
| * |
| * @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 3.0 |
| */ |
| public void setVisibleItemCount (int count) { |
| checkWidget (); |
| if (count < 0) return; |
| if ((style & SWT.READ_ONLY) != 0) { |
| //TODO |
| } else { |
| OS.SetControlData (handle, OS.kControlEntireControl, OS.kHIComboBoxNumVisibleItemsTag, 4, new int[] {count}); |
| } |
| } |
| |
| String verifyText (String string, int start, int end, Event keyEvent) { |
| Event event = new Event (); |
| event.text = string; |
| event.start = start; |
| event.end = end; |
| if (keyEvent != null) { |
| event.character = keyEvent.character; |
| event.keyCode = keyEvent.keyCode; |
| event.stateMask = keyEvent.stateMask; |
| } |
| /* |
| * It is possible (but unlikely), that application |
| * code could have disposed the widget in the verify |
| * event. If this happens, answer null to cancel |
| * the operation. |
| */ |
| sendEvent (SWT.Verify, event); |
| if (!event.doit || isDisposed ()) return null; |
| return event.text; |
| } |
| |
| } |