| /******************************************************************************* |
| * Copyright (c) 2000, 2019 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Paul Pazderski - Bug 349112: allow setting alignment on the text field |
| *******************************************************************************/ |
| package org.eclipse.swt.custom; |
| |
| |
| import java.util.function.*; |
| |
| import org.eclipse.swt.*; |
| import org.eclipse.swt.accessibility.*; |
| import org.eclipse.swt.events.*; |
| import org.eclipse.swt.graphics.*; |
| import org.eclipse.swt.widgets.*; |
| |
| /** |
| * The CCombo class represents a selectable user interface object |
| * that combines a text field and a list and issues notification |
| * when an item is selected from the list. |
| * <p> |
| * CCombo was written to work around certain limitations in the native |
| * combo box. Specifically, on win32, the height of a CCombo can be set; |
| * attempts to set the height of a Combo are ignored. CCombo can be used |
| * anywhere that having the increased flexibility is more important than |
| * getting native L&F, but the decision should not be taken lightly. |
| * There is no strict requirement that CCombo look or behave the same as |
| * the native combo box. |
| * </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> |
| * <dd>BORDER, READ_ONLY, FLAT, LEAD, LEFT, CENTER, TRAIL, RIGHT</dd> |
| * <dt><b>Events:</b> |
| * <dd>DefaultSelection, Modify, Selection, Verify</dd> |
| * </dl> |
| * |
| * @see <a href="http://www.eclipse.org/swt/snippets/#ccombo">CCombo snippets</a> |
| * @see <a href="http://www.eclipse.org/swt/examples.php">SWT Example: CustomControlExample</a> |
| * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> |
| */ |
| public class CCombo extends Composite { |
| |
| Text text; |
| List list; |
| int visibleItemCount = 5; |
| Shell popup; |
| Button arrow; |
| boolean hasFocus; |
| Listener listener, filter; |
| Color foreground, background; |
| Font font; |
| Shell _shell; |
| |
| static final String PACKAGE_PREFIX = "org.eclipse.swt.custom."; //$NON-NLS-1$ |
| |
| /** |
| * 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 widget which will be the parent of the new instance (cannot be null) |
| * @param style the style of widget 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> |
| * </ul> |
| * |
| * @see SWT#BORDER |
| * @see SWT#READ_ONLY |
| * @see SWT#FLAT |
| * @see SWT#LEAD |
| * @see SWT#LEFT |
| * @see SWT#CENTER |
| * @see SWT#RIGHT |
| * @see SWT#TRAIL |
| * @see Widget#getStyle() |
| */ |
| public CCombo (Composite parent, int style) { |
| super (parent, style = checkStyle (style)); |
| _shell = super.getShell (); |
| |
| listener = event -> { |
| if (isDisposed ()) return; |
| if (popup == event.widget) { |
| popupEvent (event); |
| return; |
| } |
| if (text == event.widget) { |
| textEvent (event); |
| return; |
| } |
| if (list == event.widget) { |
| listEvent (event); |
| return; |
| } |
| if (arrow == event.widget) { |
| arrowEvent (event); |
| return; |
| } |
| if (CCombo.this == event.widget) { |
| comboEvent (event); |
| return; |
| } |
| if (getShell () == event.widget) { |
| getDisplay().asyncExec(() -> { |
| if (isDisposed ()) return; |
| handleFocus (SWT.FocusOut); |
| }); |
| } |
| }; |
| |
| createText(style); |
| |
| int arrowStyle = SWT.ARROW | SWT.DOWN; |
| if ((style & SWT.FLAT) != 0) arrowStyle |= SWT.FLAT; |
| arrow = new Button (this, arrowStyle); |
| filter = event -> { |
| if (isDisposed ()) return; |
| if (event.type == SWT.Selection) { |
| if (event.widget instanceof ScrollBar) { |
| handleScroll(event); |
| } |
| return; |
| } |
| if (event.widget instanceof Control) { |
| Shell shell = ((Control)event.widget).getShell (); |
| if (shell == CCombo.this.getShell ()) { |
| handleFocus (SWT.FocusOut); |
| } |
| } |
| }; |
| |
| int [] comboEvents = {SWT.Dispose, SWT.FocusIn, SWT.Move, SWT.Resize, SWT.FocusOut}; |
| for (int comboEvent : comboEvents) |
| this.addListener (comboEvent, listener); |
| |
| int [] arrowEvents = {SWT.DragDetect, SWT.MouseDown, SWT.MouseEnter, SWT.MouseExit, SWT.MouseHover, |
| SWT.MouseMove, SWT.MouseUp, SWT.MouseWheel, SWT.Selection, SWT.FocusIn}; |
| for (int arrowEvent : arrowEvents) |
| arrow.addListener (arrowEvent, listener); |
| |
| createPopup(null, -1); |
| if ((style & SWT.SIMPLE) == 0) { |
| int itemHeight = list.getItemHeight (); |
| if (itemHeight != 0) { |
| int maxHeight = getMonitor().getClientArea().height / 3; |
| visibleItemCount = Math.max(visibleItemCount, maxHeight / itemHeight); |
| } |
| } |
| |
| initAccessible(); |
| } |
| static int checkStyle (int style) { |
| int mask = SWT.BORDER | SWT.READ_ONLY | SWT.FLAT | SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT | SWT.LEAD | SWT.CENTER | SWT.TRAIL; |
| return SWT.NO_FOCUS | (style & mask); |
| } |
| void createText(int comboStyle) { |
| String textValue = null, tooltip = null; |
| Point selection = null; |
| int limit = 0; |
| boolean enabled = false, focus = false, editable = false; |
| Font font = null; |
| Color fg = null, bg = null; |
| Menu menu = null; |
| if (text != null) { |
| textValue = text.getText(); |
| tooltip = text.getToolTipText(); |
| selection = text.getSelection(); |
| limit = text.getTextLimit(); |
| enabled = text.isEnabled(); |
| editable = text.getEditable(); |
| focus = text.isFocusControl(); |
| font = text.getFont(); |
| fg = text.getForeground(); |
| bg = text.getBackground(); |
| menu = text.getMenu(); |
| text.dispose(); |
| } |
| |
| int textStyle = SWT.SINGLE; |
| if ((comboStyle & SWT.READ_ONLY) != 0) textStyle |= SWT.READ_ONLY; |
| if ((comboStyle & SWT.FLAT) != 0) textStyle |= SWT.FLAT; |
| textStyle |= comboStyle & (SWT.LEAD | SWT.CENTER | SWT.TRAIL); |
| text = new Text (this, textStyle); |
| if (textValue != null) { |
| text.setText(textValue); |
| text.setToolTipText(tooltip); |
| if (selection != null) text.setSelection(selection); |
| text.setTextLimit(limit); |
| text.setEnabled(enabled); |
| text.setEditable(editable); |
| if (focus) text.setFocus(); |
| if (font != null && !font.isDisposed()) text.setFont(font); |
| if (fg != null && !fg.isDisposed()) text.setForeground(fg); |
| if (bg != null && !bg.isDisposed()) text.setBackground(bg); |
| if (menu != null && !menu.isDisposed()) text.setMenu(menu); |
| internalLayout(true); |
| } |
| |
| int [] textEvents = {SWT.DefaultSelection, SWT.DragDetect, SWT.KeyDown, SWT.KeyUp, SWT.MenuDetect, SWT.Modify, |
| SWT.MouseDown, SWT.MouseUp, SWT.MouseDoubleClick, SWT.MouseEnter, SWT.MouseExit, SWT.MouseHover, |
| SWT.MouseMove, SWT.MouseWheel, SWT.Traverse, SWT.FocusIn, SWT.Verify}; |
| for (int textEvent : textEvents) |
| text.addListener (textEvent, listener); |
| } |
| /** |
| * Adds the argument to the end of the receiver's list. |
| * <p> |
| * Note: If control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </p> |
| * @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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| list.add (string); |
| } |
| /** |
| * 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><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| list.add (string, index); |
| } |
| /** |
| * 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) SWT.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 combo's list selection changes. |
| * <code>widgetDefaultSelected</code> is typically called when ENTER is pressed the combo's text area. |
| * </p> |
| * |
| * @param listener the listener which should be notified when the user changes the receiver's selection |
| * |
| * @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) SWT.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 3.3 |
| */ |
| public void addVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| TypedListener typedListener = new TypedListener (listener); |
| addListener (SWT.Verify,typedListener); |
| } |
| void arrowEvent (Event event) { |
| switch (event.type) { |
| case SWT.FocusIn: { |
| handleFocus (SWT.FocusIn); |
| break; |
| } |
| case SWT.DragDetect: |
| case SWT.MouseDown: |
| case SWT.MouseUp: |
| case SWT.MouseMove: |
| case SWT.MouseEnter: |
| case SWT.MouseExit: |
| case SWT.MouseHover: { |
| Point pt = getDisplay ().map (arrow, this, event.x, event.y); |
| event.x = pt.x; event.y = pt.y; |
| notifyListeners (event.type, event); |
| event.type = SWT.None; |
| break; |
| } |
| case SWT.MouseWheel: { |
| Point pt = getDisplay ().map (arrow, this, event.x, event.y); |
| event.x = pt.x; event.y = pt.y; |
| notifyListeners (SWT.MouseWheel, event); |
| event.type = SWT.None; |
| if (isDisposed ()) break; |
| if (!event.doit) break; |
| if (event.count != 0) { |
| event.doit = false; |
| int oldIndex = getSelectionIndex (); |
| if (event.count > 0) { |
| select (Math.max (oldIndex - 1, 0)); |
| } else { |
| select (Math.min (oldIndex + 1, getItemCount () - 1)); |
| } |
| if (oldIndex != getSelectionIndex ()) { |
| Event e = new Event(); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.Selection, e); |
| } |
| if (isDisposed ()) break; |
| } |
| break; |
| } |
| case SWT.Selection: { |
| text.setFocus(); |
| dropDown (!isDropped ()); |
| break; |
| } |
| } |
| } |
| @Override |
| protected void checkSubclass () { |
| String name = getClass ().getName (); |
| int index = name.lastIndexOf ('.'); |
| if (!name.substring (0, index + 1).equals (PACKAGE_PREFIX)) { |
| SWT.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 (); |
| text.clearSelection (); |
| list.deselectAll (); |
| } |
| void comboEvent (Event event) { |
| switch (event.type) { |
| case SWT.Dispose: |
| removeListener(SWT.Dispose, listener); |
| notifyListeners(SWT.Dispose, event); |
| event.type = SWT.None; |
| |
| if (popup != null && !popup.isDisposed ()) { |
| list.removeListener (SWT.Dispose, listener); |
| popup.dispose (); |
| } |
| Shell shell = getShell (); |
| shell.removeListener (SWT.Deactivate, listener); |
| Display display = getDisplay (); |
| display.removeFilter (SWT.FocusIn, filter); |
| popup = null; |
| text = null; |
| list = null; |
| arrow = null; |
| _shell = null; |
| break; |
| case SWT.FocusIn: |
| Control focusControl = getDisplay ().getFocusControl (); |
| if (focusControl == arrow || focusControl == list) return; |
| if (isDropped()) { |
| list.setFocus(); |
| } else { |
| text.setFocus(); |
| } |
| break; |
| case SWT.FocusOut: |
| text.clearSelection(); |
| break; |
| case SWT.Move: |
| dropDown (false); |
| break; |
| case SWT.Resize: |
| internalLayout (false); |
| break; |
| } |
| } |
| |
| @Override |
| public Point computeSize (int wHint, int hHint, boolean changed) { |
| checkWidget (); |
| int width = 0, height = 0; |
| GC gc = new GC (text); |
| int spacer = gc.stringExtent (" ").x; //$NON-NLS-1$ |
| int textWidth = gc.stringExtent (text.getText ()).x; |
| for (String item : list.getItems ()) { |
| textWidth = Math.max (gc.stringExtent (item).x, textWidth); |
| } |
| gc.dispose (); |
| Point textSize = text.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed); |
| Point arrowSize = arrow.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed); |
| Point listSize = list.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed); |
| int borderWidth = getBorderWidth (); |
| |
| height = Math.max (textSize.y, arrowSize.y); |
| width = Math.max (textWidth + 2*spacer + arrowSize.x + 2*borderWidth, listSize.x); |
| if (wHint != SWT.DEFAULT) width = wHint; |
| if (hHint != SWT.DEFAULT) height = hHint; |
| return new Point (width + 2*borderWidth, height + 2*borderWidth); |
| } |
| /** |
| * 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 3.3 |
| */ |
| public void copy () { |
| checkWidget (); |
| text.copy (); |
| } |
| void createPopup(String[] items, int selectionIndex) { |
| // create shell and list |
| popup = new Shell (getShell (), SWT.NO_TRIM | SWT.ON_TOP); |
| int style = getStyle (); |
| int listStyle = SWT.SINGLE | SWT.V_SCROLL | SWT.H_SCROLL; |
| if ((style & SWT.FLAT) != 0) listStyle |= SWT.FLAT; |
| if ((style & SWT.RIGHT_TO_LEFT) != 0) listStyle |= SWT.RIGHT_TO_LEFT; |
| if ((style & SWT.LEFT_TO_RIGHT) != 0) listStyle |= SWT.LEFT_TO_RIGHT; |
| list = new List (popup, listStyle); |
| if (font != null) list.setFont (font); |
| if (foreground != null) list.setForeground (foreground); |
| if (background != null) list.setBackground (background); |
| |
| int [] popupEvents = {SWT.Close, SWT.Paint}; |
| for (int popupEvent : popupEvents) |
| popup.addListener (popupEvent, listener); |
| int [] listEvents = {SWT.MouseUp, SWT.Selection, SWT.Traverse, SWT.KeyDown, SWT.KeyUp, SWT.FocusIn, SWT.FocusOut, SWT.Dispose}; |
| for (int listEvent : listEvents) |
| list.addListener (listEvent, listener); |
| |
| if (items != null) list.setItems (items); |
| if (selectionIndex != -1) list.setSelection (selectionIndex); |
| } |
| /** |
| * 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 3.3 |
| */ |
| public void cut () { |
| checkWidget (); |
| text.cut (); |
| } |
| /** |
| * 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 (0 <= index && index < list.getItemCount () && |
| index == list.getSelectionIndex() && |
| text.getText().equals(list.getItem(index))) { |
| text.setText(""); //$NON-NLS-1$ |
| list.deselect (index); |
| } |
| } |
| /** |
| * 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 (); |
| text.setText(""); //$NON-NLS-1$ |
| list.deselectAll (); |
| } |
| void dropDown (boolean drop) { |
| if (drop == isDropped ()) return; |
| Display display = getDisplay (); |
| if (!drop) { |
| display.removeFilter (SWT.Selection, filter); |
| popup.setVisible (false); |
| if (!isDisposed () && isFocusControl()) { |
| text.setFocus(); |
| } |
| return; |
| } |
| if (!isVisible()) return; |
| if (getShell() != popup.getParent ()) { |
| String[] items = list.getItems (); |
| int selectionIndex = list.getSelectionIndex (); |
| list.removeListener (SWT.Dispose, listener); |
| popup.dispose(); |
| popup = null; |
| list = null; |
| createPopup (items, selectionIndex); |
| } |
| |
| Point comboSize = getSize (); |
| int itemCount = list.getItemCount (); |
| itemCount = (itemCount == 0) ? visibleItemCount : Math.min(visibleItemCount, itemCount); |
| int itemHeight = list.getItemHeight () * itemCount; |
| Point listSize = list.computeSize (SWT.DEFAULT, itemHeight, false); |
| Rectangle displayRect = getMonitor ().getClientArea (); |
| list.setBounds (1, 1, Math.max (comboSize.x - 2, Math.min(listSize.x, displayRect.width - 2)), listSize.y); |
| |
| int index = list.getSelectionIndex (); |
| if (index != -1) list.setTopIndex (index); |
| Rectangle listRect = list.getBounds (); |
| Rectangle parentRect = display.map (getParent (), null, getBounds ()); |
| int width = listRect.width + 2; |
| int height = listRect.height + 2; |
| int x = parentRect.x; |
| if (x + width > displayRect.x + displayRect.width) { |
| x = displayRect.x + displayRect.width - width; |
| } |
| int y = parentRect.y + comboSize.y; |
| if (y + height > displayRect.y + displayRect.height) { |
| int popUpwardsHeight = (parentRect.y - height < displayRect.y) ? parentRect.y - displayRect.y : height; |
| int popDownwardsHeight = displayRect.y + displayRect.height - y; |
| if (popUpwardsHeight > popDownwardsHeight) { |
| height = popUpwardsHeight; |
| y = parentRect.y - popUpwardsHeight; |
| } else { |
| height = popDownwardsHeight; |
| } |
| listRect.height = height - 2; |
| } |
| /* |
| * Invisible HScrollBar lead to empty space at end of CCombo drop-down. |
| * Fix is to reduce height of list and shell in that case, bug 388126. |
| */ |
| ScrollBar hBar = list.getHorizontalBar(); |
| int emptyHBarSpace = hBar.isVisible () ? 0 : hBar.getSize ().y; |
| list.setSize (listRect.width, listRect.height - emptyHBarSpace); |
| popup.setBounds (x, y, width, height - emptyHBarSpace); |
| popup.setVisible (true); |
| if (isFocusControl()) list.setFocus (); |
| |
| /* |
| * Add a filter to listen to scrolling of the parent composite, when the |
| * drop-down is visible. Remove the filter when drop-down is not |
| * visible. |
| */ |
| display.removeFilter (SWT.Selection, filter); |
| display.addFilter (SWT.Selection, filter); |
| } |
| /* |
| * Return the lowercase of the first non-'&' character following |
| * an '&' character in the given string. If there are no '&' |
| * characters in the given string, return '\0'. |
| */ |
| char _findMnemonic (String string) { |
| if (string == null) return '\0'; |
| int index = 0; |
| int length = string.length (); |
| do { |
| while (index < length && string.charAt (index) != '&') index++; |
| if (++index >= length) return '\0'; |
| if (string.charAt (index) != '&') return Character.toLowerCase (string.charAt (index)); |
| index++; |
| } while (index < length); |
| return '\0'; |
| } |
| /* |
| * Return the Label immediately preceding the receiver in the z-order, |
| * or null if none. |
| */ |
| String getAssociatedLabel () { |
| Control[] siblings = getParent ().getChildren (); |
| for (int i = 0; i < siblings.length; i++) { |
| if (siblings [i] == this) { |
| if (i > 0) { |
| Control sibling = siblings [i-1]; |
| if (sibling instanceof Label) return ((Label) sibling).getText(); |
| if (sibling instanceof CLabel) return ((CLabel) sibling).getText(); |
| } |
| break; |
| } |
| } |
| return null; |
| } |
| /** |
| * Returns the horizontal alignment. |
| * The alignment style (LEFT, CENTER or RIGHT) is returned. |
| * |
| * @return SWT.LEFT, SWT.RIGHT or SWT.CENTER |
| * @since 3.113 |
| */ |
| public int getAlignment() { |
| return text.getStyle() & (SWT.LEFT | SWT.CENTER | SWT.RIGHT); |
| } |
| @Override |
| public Control [] getChildren () { |
| checkWidget(); |
| return new Control [0]; |
| } |
| /** |
| * Gets the editable state. |
| * |
| * @return whether or not the receiver is editable |
| * |
| * @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 boolean getEditable () { |
| checkWidget (); |
| return text.getEditable(); |
| } |
| /** |
| * 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(); |
| return list.getItem (index); |
| } |
| /** |
| * 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 (); |
| return list.getItemCount (); |
| } |
| /** |
| * 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 (); |
| return list.getItemHeight (); |
| } |
| /** |
| * Returns an 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 (); |
| return list.getItems (); |
| } |
| /** |
| * 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 (); |
| return isDropped(); |
| } |
| @Override |
| public Menu getMenu() { |
| return text.getMenu(); |
| } |
| /** |
| * Returns a <code>Point</code> whose x coordinate is the start |
| * of the selection in the receiver's text field, and whose y |
| * coordinate is the end of the selection. The returned values |
| * are zero-relative. An "empty" selection as indicated by |
| * the the x and y coordinates having the same value. |
| * |
| * @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 (); |
| return text.getSelection (); |
| } |
| /** |
| * 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 (); |
| return list.getSelectionIndex (); |
| } |
| @Override |
| public Shell getShell () { |
| checkWidget (); |
| Shell shell = super.getShell (); |
| if (shell != _shell) { |
| if (_shell != null && !_shell.isDisposed ()) { |
| _shell.removeListener (SWT.Deactivate, listener); |
| } |
| _shell = shell; |
| } |
| return _shell; |
| } |
| @Override |
| public int getStyle () { |
| int style = super.getStyle (); |
| style &= ~SWT.READ_ONLY; |
| if (!text.getEditable()) style |= SWT.READ_ONLY; |
| style &= ~(SWT.LEFT | SWT.CENTER | SWT.RIGHT); |
| style |= getAlignment(); |
| return style; |
| } |
| /** |
| * Returns a string containing a copy of the contents of the |
| * receiver's text field. |
| * |
| * @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 text.getText (); |
| } |
| /** |
| * 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 (); |
| return text.getLineHeight (); |
| } |
| /** |
| * 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> |
| */ |
| public int getTextLimit () { |
| checkWidget (); |
| return text.getTextLimit (); |
| } |
| /** |
| * Gets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * |
| * @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 (); |
| return visibleItemCount; |
| } |
| void handleFocus (int type) { |
| switch (type) { |
| case SWT.FocusIn: { |
| if (hasFocus) return; |
| if (getEditable ()) text.selectAll (); |
| hasFocus = true; |
| Shell shell = getShell (); |
| shell.removeListener (SWT.Deactivate, listener); |
| shell.addListener (SWT.Deactivate, listener); |
| Display display = getDisplay (); |
| display.removeFilter (SWT.FocusIn, filter); |
| display.addFilter (SWT.FocusIn, filter); |
| Event e = new Event (); |
| notifyListeners (SWT.FocusIn, e); |
| break; |
| } |
| case SWT.FocusOut: { |
| if (!hasFocus) return; |
| Control focusControl = getDisplay ().getFocusControl (); |
| if (focusControl == arrow || focusControl == list || focusControl == text) return; |
| hasFocus = false; |
| Shell shell = getShell (); |
| shell.removeListener(SWT.Deactivate, listener); |
| Display display = getDisplay (); |
| display.removeFilter (SWT.FocusIn, filter); |
| Event e = new Event (); |
| notifyListeners (SWT.FocusOut, e); |
| break; |
| } |
| } |
| } |
| void handleScroll(Event event) { |
| ScrollBar scrollBar = (ScrollBar)event.widget; |
| Control scrollableParent = scrollBar.getParent(); |
| if (scrollableParent.equals(list)) return; |
| if (isParentScrolling(scrollableParent)) dropDown(false); |
| } |
| /** |
| * 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) { |
| checkWidget (); |
| if (string == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| return list.indexOf (string); |
| } |
| /** |
| * 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| return list.indexOf (string, start); |
| } |
| |
| void initAccessible() { |
| AccessibleAdapter accessibleAdapter = new AccessibleAdapter () { |
| @Override |
| public void getName (AccessibleEvent e) { |
| String name = null; |
| String text = getAssociatedLabel (); |
| if (text != null) { |
| name = stripMnemonic (text); |
| } |
| e.result = name; |
| } |
| @Override |
| public void getKeyboardShortcut(AccessibleEvent e) { |
| String shortcut = null; |
| String text = getAssociatedLabel (); |
| if (text != null) { |
| char mnemonic = _findMnemonic (text); |
| if (mnemonic != '\0') { |
| shortcut = "Alt+"+mnemonic; //$NON-NLS-1$ |
| } |
| } |
| e.result = shortcut; |
| } |
| @Override |
| public void getHelp (AccessibleEvent e) { |
| e.result = getToolTipText (); |
| } |
| }; |
| getAccessible ().addAccessibleListener (accessibleAdapter); |
| text.getAccessible ().addAccessibleListener (accessibleAdapter); |
| list.getAccessible ().addAccessibleListener (accessibleAdapter); |
| |
| arrow.getAccessible ().addAccessibleListener (new AccessibleAdapter() { |
| @Override |
| public void getName (AccessibleEvent e) { |
| e.result = isDropped () ? SWT.getMessage ("SWT_Close") : SWT.getMessage ("SWT_Open"); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| @Override |
| public void getKeyboardShortcut (AccessibleEvent e) { |
| e.result = "Alt+Down Arrow"; //$NON-NLS-1$ |
| } |
| @Override |
| public void getHelp (AccessibleEvent e) { |
| e.result = getToolTipText (); |
| } |
| }); |
| |
| getAccessible().addAccessibleTextListener (new AccessibleTextAdapter() { |
| @Override |
| public void getCaretOffset (AccessibleTextEvent e) { |
| e.offset = text.getCaretPosition (); |
| } |
| @Override |
| public void getSelectionRange(AccessibleTextEvent e) { |
| Point sel = text.getSelection(); |
| e.offset = sel.x; |
| e.length = sel.y - sel.x; |
| } |
| }); |
| |
| getAccessible().addAccessibleControlListener (new AccessibleControlAdapter() { |
| @Override |
| public void getChildAtPoint (AccessibleControlEvent e) { |
| Point testPoint = toControl (e.x, e.y); |
| if (getBounds ().contains (testPoint)) { |
| e.childID = ACC.CHILDID_SELF; |
| } |
| } |
| |
| @Override |
| public void getLocation (AccessibleControlEvent e) { |
| Rectangle location = getBounds (); |
| Point pt = getParent().toDisplay (location.x, location.y); |
| e.x = pt.x; |
| e.y = pt.y; |
| e.width = location.width; |
| e.height = location.height; |
| } |
| |
| @Override |
| public void getChildCount (AccessibleControlEvent e) { |
| e.detail = 0; |
| } |
| |
| @Override |
| public void getRole (AccessibleControlEvent e) { |
| e.detail = ACC.ROLE_COMBOBOX; |
| } |
| |
| @Override |
| public void getState (AccessibleControlEvent e) { |
| e.detail = ACC.STATE_NORMAL; |
| } |
| |
| @Override |
| public void getValue (AccessibleControlEvent e) { |
| e.result = getText (); |
| } |
| }); |
| |
| text.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter () { |
| @Override |
| public void getRole (AccessibleControlEvent e) { |
| e.detail = text.getEditable () ? ACC.ROLE_TEXT : ACC.ROLE_LABEL; |
| } |
| }); |
| |
| arrow.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter() { |
| @Override |
| public void getDefaultAction (AccessibleControlEvent e) { |
| e.result = isDropped () ? SWT.getMessage ("SWT_Close") : SWT.getMessage ("SWT_Open"); //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| }); |
| } |
| boolean isDropped () { |
| return !isDisposed() && popup.getVisible (); |
| } |
| @Override |
| public boolean isFocusControl () { |
| checkWidget(); |
| Predicate<Control> checkFocusControl = control -> (control != null && !control.isDisposed() && control.isFocusControl ()); |
| if (checkFocusControl.test(text) || checkFocusControl.test(arrow) || |
| checkFocusControl.test(list) || checkFocusControl.test(popup)) { |
| return true; |
| } |
| return super.isFocusControl (); |
| } |
| |
| boolean isParentScrolling(Control scrollableParent) { |
| Control parent = this.getParent(); |
| while (parent != null) { |
| if (parent.equals(scrollableParent)) |
| return true; |
| parent = parent.getParent(); |
| } |
| return false; |
| } |
| void internalLayout (boolean changed) { |
| if (isDropped ()) dropDown (false); |
| Rectangle rect = getClientArea (); |
| int width = rect.width; |
| int height = rect.height; |
| Point arrowSize = arrow.computeSize (SWT.DEFAULT, height, changed); |
| text.setBounds (0, 0, width - arrowSize.x, height); |
| arrow.setBounds (width - arrowSize.x, 0, arrowSize.x, arrowSize.y); |
| } |
| void listEvent (Event event) { |
| switch (event.type) { |
| case SWT.Dispose: |
| if (getShell () != popup.getParent ()) { |
| String[] items = list.getItems (); |
| int selectionIndex = list.getSelectionIndex (); |
| popup = null; |
| list = null; |
| createPopup (items, selectionIndex); |
| } |
| break; |
| case SWT.FocusIn: { |
| handleFocus (SWT.FocusIn); |
| break; |
| } |
| case SWT.FocusOut: { |
| /* |
| * Behavior in Windows, GTK & Cocoa: When the arrow button is pressed |
| * with the popup list visible, the following events are received- |
| * popup control receives a deactivate event, |
| * list receives focus lost event, and then |
| * arrow button receives a selection event. |
| * If we hide the popup in the focus out event, the selection event will |
| * show it again. To prevent the popup from showing again, we will detect |
| * this case and let the selection event of the arrow button hide the popup. |
| */ |
| Point point = arrow.toControl(getDisplay().getCursorLocation()); |
| Point size = arrow.getSize(); |
| Rectangle rect = new Rectangle(0, 0, size.x, size.y); |
| if (rect.contains(point)) { |
| boolean comboShellActivated = getDisplay ().getActiveShell () == getShell (); |
| if (!comboShellActivated) dropDown (false); |
| break; |
| } |
| dropDown (false); |
| break; |
| } |
| case SWT.MouseUp: { |
| if (event.button != 1) return; |
| dropDown (false); |
| break; |
| } |
| case SWT.Selection: { |
| int index = list.getSelectionIndex (); |
| if (index == -1) return; |
| text.setText (list.getItem (index)); |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| list.setSelection (index); |
| Event e = new Event (); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| e.doit = event.doit; |
| notifyListeners (SWT.Selection, e); |
| event.doit = e.doit; |
| break; |
| } |
| case SWT.Traverse: { |
| switch (event.detail) { |
| case SWT.TRAVERSE_RETURN: |
| case SWT.TRAVERSE_ESCAPE: |
| case SWT.TRAVERSE_ARROW_PREVIOUS: |
| case SWT.TRAVERSE_ARROW_NEXT: |
| event.doit = false; |
| break; |
| case SWT.TRAVERSE_TAB_NEXT: |
| case SWT.TRAVERSE_TAB_PREVIOUS: |
| event.doit = text.traverse(event.detail); |
| event.detail = SWT.TRAVERSE_NONE; |
| if (event.doit) dropDown(false); |
| return; |
| } |
| Event e = new Event (); |
| e.time = event.time; |
| e.detail = event.detail; |
| e.doit = event.doit; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| notifyListeners (SWT.Traverse, e); |
| event.doit = e.doit; |
| event.detail = e.detail; |
| break; |
| } |
| case SWT.KeyUp: { |
| Event e = new Event (); |
| e.time = event.time; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.KeyUp, e); |
| event.doit = e.doit; |
| break; |
| } |
| case SWT.KeyDown: { |
| if (event.character == SWT.ESC) { |
| // Escape key cancels popup list |
| dropDown (false); |
| } |
| if ((event.stateMask & SWT.ALT) != 0 && (event.keyCode == SWT.ARROW_UP || event.keyCode == SWT.ARROW_DOWN)) { |
| dropDown (false); |
| } |
| if (event.character == SWT.CR) { |
| // Enter causes default selection |
| dropDown (false); |
| Event e = new Event (); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.DefaultSelection, e); |
| } |
| // At this point the widget may have been disposed. |
| // If so, do not continue. |
| if (isDisposed ()) break; |
| Event e = new Event(); |
| e.time = event.time; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| e.stateMask = event.stateMask; |
| notifyListeners(SWT.KeyDown, e); |
| event.doit = e.doit; |
| break; |
| |
| } |
| } |
| } |
| /** |
| * 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 3.3 |
| */ |
| public void paste () { |
| checkWidget (); |
| text.paste (); |
| } |
| void popupEvent(Event event) { |
| switch (event.type) { |
| case SWT.Paint: |
| // draw black rectangle around list |
| Rectangle listRect = list.getBounds(); |
| Color black = getDisplay().getSystemColor(SWT.COLOR_BLACK); |
| event.gc.setForeground(black); |
| event.gc.drawRectangle(0, 0, listRect.width + 1, listRect.height + 1); |
| break; |
| case SWT.Close: |
| event.doit = false; |
| dropDown (false); |
| break; |
| } |
| } |
| @Override |
| public void redraw () { |
| super.redraw(); |
| text.redraw(); |
| arrow.redraw(); |
| if (popup.isVisible()) list.redraw(); |
| } |
| @Override |
| public void redraw (int x, int y, int width, int height, boolean all) { |
| super.redraw(x, y, width, height, true); |
| } |
| |
| /** |
| * 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(); |
| list.remove (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(); |
| list.remove (start, end); |
| } |
| /** |
| * 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| list.remove (string); |
| } |
| /** |
| * Removes all of the items from the receiver's list and clear the |
| * contents of receiver's text field. |
| * |
| * @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(); |
| text.setText (""); //$NON-NLS-1$ |
| list.removeAll (); |
| } |
| /** |
| * 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| removeListener(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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| removeListener(SWT.Selection, listener); |
| removeListener(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 3.3 |
| */ |
| public void removeVerifyListener (VerifyListener listener) { |
| checkWidget(); |
| if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| removeListener(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(); |
| if (index == -1) { |
| list.deselectAll (); |
| text.setText (""); //$NON-NLS-1$ |
| return; |
| } |
| if (0 <= index && index < list.getItemCount()) { |
| if (index != getSelectionIndex()) { |
| text.setText (list.getItem (index)); |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| list.select (index); |
| list.showSelection (); |
| } |
| } |
| } |
| |
| /** |
| * Set the horizontal alignment of the CCombo. |
| * Use the values LEFT, CENTER and RIGHT to align image and text within the available space. |
| * |
| * @param align the alignment style of LEFT, RIGHT or CENTER |
| * |
| * @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> |
| * <li>ERROR_INVALID_ARGUMENT - if the value of align is not one of SWT.LEFT, SWT.RIGHT or SWT.CENTER</li> |
| * </ul> |
| * @since 3.113 |
| */ |
| public void setAlignment(int align) { |
| checkWidget(); |
| int styleWithoutAlign = getStyle() & ~(SWT.LEFT | SWT.CENTER | SWT.RIGHT); |
| createText(styleWithoutAlign | align); |
| } |
| @Override |
| public void setBackground (Color color) { |
| super.setBackground(color); |
| background = color; |
| if (text != null) text.setBackground(color); |
| if (list != null) list.setBackground(color); |
| if (arrow != null) arrow.setBackground(color); |
| } |
| /** |
| * Sets the editable state. |
| * |
| * @param editable the new editable 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 3.0 |
| */ |
| public void setEditable (boolean editable) { |
| checkWidget (); |
| text.setEditable(editable); |
| } |
| @Override |
| public void setEnabled (boolean enabled) { |
| super.setEnabled(enabled); |
| if (popup != null) popup.setVisible (false); |
| if (text != null) text.setEnabled(enabled); |
| if (arrow != null) arrow.setEnabled(enabled); |
| } |
| @Override |
| public boolean setFocus () { |
| checkWidget(); |
| if (!isEnabled () || !getVisible ()) return false; |
| if (isFocusControl ()) return true; |
| return text.setFocus (); |
| } |
| @Override |
| public void setFont (Font font) { |
| super.setFont (font); |
| this.font = font; |
| text.setFont (font); |
| list.setFont (font); |
| internalLayout (true); |
| } |
| @Override |
| public void setForeground (Color color) { |
| super.setForeground(color); |
| foreground = color; |
| if (text != null) text.setForeground(color); |
| if (list != null) list.setForeground(color); |
| if (arrow != null) arrow.setForeground(color); |
| } |
| /** |
| * Sets the text of the item in the receiver's list at the given |
| * zero-relative index to the string argument. This is equivalent |
| * to <code>remove</code>'ing the old item at the index, and then |
| * <code>add</code>'ing the new item at that index. |
| * |
| * @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(); |
| list.setItem (index, string); |
| } |
| /** |
| * 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 (); |
| list.setItems (items); |
| if (!text.getEditable ()) text.setText (""); //$NON-NLS-1$ |
| } |
| /** |
| * Sets the layout which is associated with the receiver to be |
| * the argument which may be null. |
| * <p> |
| * Note: No Layout can be set on this Control because it already |
| * manages the size and position of its children. |
| * </p> |
| * |
| * @param layout the receiver's new layout or null |
| * |
| * @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> |
| */ |
| @Override |
| public void setLayout (Layout layout) { |
| checkWidget (); |
| return; |
| } |
| /** |
| * 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 (); |
| dropDown(visible); |
| } |
| @Override |
| public void setMenu(Menu menu) { |
| text.setMenu(menu); |
| } |
| /** |
| * 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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| text.setSelection (selection.x, selection.y); |
| } |
| |
| /** |
| * 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><p> |
| * Also note, if control characters like '\n', '\t' etc. are used |
| * in the string, then the behavior is platform dependent. |
| * </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) SWT.error (SWT.ERROR_NULL_ARGUMENT); |
| int index = list.indexOf (string); |
| if (index == -1) { |
| list.deselectAll (); |
| text.setText (string); |
| return; |
| } |
| text.setText (string); |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| list.setSelection (index); |
| list.showSelection (); |
| } |
| /** |
| * Sets the maximum number of characters that the receiver's |
| * text field is capable of holding to be the argument. |
| * |
| * @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> |
| */ |
| public void setTextLimit (int limit) { |
| checkWidget(); |
| text.setTextLimit (limit); |
| } |
| |
| @Override |
| public void setToolTipText (String string) { |
| checkWidget(); |
| super.setToolTipText(string); |
| arrow.setToolTipText (string); |
| text.setToolTipText (string); |
| } |
| |
| @Override |
| public void setVisible (boolean visible) { |
| super.setVisible(visible); |
| /* |
| * At this point the widget may have been disposed in a FocusOut event. |
| * If so then do not continue. |
| */ |
| if (isDisposed ()) return; |
| // TEMPORARY CODE |
| if (popup == null || popup.isDisposed ()) return; |
| if (!visible) popup.setVisible (false); |
| } |
| /** |
| * Sets the number of items that are visible in the drop |
| * down portion of the receiver's list. |
| * |
| * @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; |
| visibleItemCount = count; |
| } |
| String stripMnemonic (String string) { |
| int index = 0; |
| int length = string.length (); |
| do { |
| while ((index < length) && (string.charAt (index) != '&')) index++; |
| if (++index >= length) return string; |
| if (string.charAt (index) != '&') { |
| return string.substring(0, index-1) + string.substring(index, length); |
| } |
| index++; |
| } while (index < length); |
| return string; |
| } |
| void textEvent (Event event) { |
| switch (event.type) { |
| case SWT.FocusIn: { |
| handleFocus (SWT.FocusIn); |
| break; |
| } |
| case SWT.DefaultSelection: { |
| dropDown (false); |
| Event e = new Event (); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.DefaultSelection, e); |
| break; |
| } |
| case SWT.DragDetect: |
| case SWT.MouseDoubleClick: |
| case SWT.MouseMove: |
| case SWT.MouseEnter: |
| case SWT.MouseExit: |
| case SWT.MouseHover: { |
| Point pt = getDisplay ().map (text, this, event.x, event.y); |
| event.x = pt.x; event.y = pt.y; |
| notifyListeners (event.type, event); |
| event.type = SWT.None; |
| break; |
| } |
| case SWT.KeyDown: { |
| Event keyEvent = new Event (); |
| keyEvent.time = event.time; |
| keyEvent.character = event.character; |
| keyEvent.keyCode = event.keyCode; |
| keyEvent.keyLocation = event.keyLocation; |
| keyEvent.stateMask = event.stateMask; |
| notifyListeners (SWT.KeyDown, keyEvent); |
| if (isDisposed ()) break; |
| event.doit = keyEvent.doit; |
| if (!event.doit) break; |
| if (event.keyCode == SWT.ARROW_UP || event.keyCode == SWT.ARROW_DOWN) { |
| event.doit = false; |
| if ((event.stateMask & SWT.ALT) != 0) { |
| boolean dropped = isDropped (); |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| if (!dropped) setFocus (); |
| dropDown (!dropped); |
| break; |
| } |
| |
| int oldIndex = getSelectionIndex (); |
| if (event.keyCode == SWT.ARROW_UP) { |
| select (Math.max (oldIndex - 1, 0)); |
| } else { |
| select (Math.min (oldIndex + 1, getItemCount () - 1)); |
| } |
| if (oldIndex != getSelectionIndex ()) { |
| Event e = new Event(); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.Selection, e); |
| } |
| if (isDisposed ()) break; |
| } |
| |
| // Further work : Need to add support for incremental search in |
| // pop up list as characters typed in text widget |
| break; |
| } |
| case SWT.KeyUp: { |
| Event e = new Event (); |
| e.time = event.time; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.KeyUp, e); |
| event.doit = e.doit; |
| break; |
| } |
| case SWT.MenuDetect: { |
| Event e = new Event (); |
| e.time = event.time; |
| e.detail = event.detail; |
| e.x = event.x; |
| e.y = event.y; |
| if (event.detail == SWT.MENU_KEYBOARD) { |
| Point pt = getDisplay().map(text, null, text.getCaretLocation()); |
| e.x = pt.x; |
| e.y = pt.y; |
| } |
| notifyListeners (SWT.MenuDetect, e); |
| event.doit = e.doit; |
| event.x = e.x; |
| event.y = e.y; |
| break; |
| } |
| case SWT.Modify: { |
| list.deselectAll (); |
| Event e = new Event (); |
| e.time = event.time; |
| notifyListeners (SWT.Modify, e); |
| break; |
| } |
| case SWT.MouseDown: { |
| Point pt = getDisplay ().map (text, this, event.x, event.y); |
| Event mouseEvent = new Event (); |
| mouseEvent.button = event.button; |
| mouseEvent.count = event.count; |
| mouseEvent.stateMask = event.stateMask; |
| mouseEvent.time = event.time; |
| mouseEvent.x = pt.x; mouseEvent.y = pt.y; |
| notifyListeners (SWT.MouseDown, mouseEvent); |
| if (isDisposed ()) break; |
| event.doit = mouseEvent.doit; |
| if (!event.doit) break; |
| if (event.button != 1) return; |
| if (text.getEditable ()) return; |
| boolean dropped = isDropped (); |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| if (!dropped) setFocus (); |
| dropDown (!dropped); |
| break; |
| } |
| case SWT.MouseUp: { |
| Point pt = getDisplay ().map (text, this, event.x, event.y); |
| Event mouseEvent = new Event (); |
| mouseEvent.button = event.button; |
| mouseEvent.count = event.count; |
| mouseEvent.stateMask = event.stateMask; |
| mouseEvent.time = event.time; |
| mouseEvent.x = pt.x; mouseEvent.y = pt.y; |
| notifyListeners (SWT.MouseUp, mouseEvent); |
| if (isDisposed ()) break; |
| event.doit = mouseEvent.doit; |
| if (!event.doit) break; |
| if (event.button != 1) return; |
| if (text.getEditable ()) return; |
| if (text.getEditable() && text.isFocusControl()) text.selectAll (); |
| break; |
| } |
| case SWT.MouseWheel: { |
| notifyListeners (SWT.MouseWheel, event); |
| event.type = SWT.None; |
| if (isDisposed ()) break; |
| if (!event.doit) break; |
| if (event.count != 0) { |
| event.doit = false; |
| int oldIndex = getSelectionIndex (); |
| if (event.count > 0) { |
| select (Math.max (oldIndex - 1, 0)); |
| } else { |
| select (Math.min (oldIndex + 1, getItemCount () - 1)); |
| } |
| if (oldIndex != getSelectionIndex ()) { |
| Event e = new Event(); |
| e.time = event.time; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.Selection, e); |
| } |
| if (isDisposed ()) break; |
| } |
| break; |
| } |
| case SWT.Traverse: { |
| switch (event.detail) { |
| case SWT.TRAVERSE_ARROW_PREVIOUS: |
| case SWT.TRAVERSE_ARROW_NEXT: |
| // The enter causes default selection and |
| // the arrow keys are used to manipulate the list contents so |
| // do not use them for traversal. |
| event.doit = false; |
| break; |
| case SWT.TRAVERSE_TAB_PREVIOUS: |
| event.doit = traverse(SWT.TRAVERSE_TAB_PREVIOUS); |
| event.detail = SWT.TRAVERSE_NONE; |
| return; |
| } |
| Event e = new Event (); |
| e.time = event.time; |
| e.detail = event.detail; |
| e.doit = event.doit; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| notifyListeners (SWT.Traverse, e); |
| event.doit = e.doit; |
| event.detail = e.detail; |
| break; |
| } |
| case SWT.Verify: { |
| Event e = new Event (); |
| e.text = event.text; |
| e.start = event.start; |
| e.end = event.end; |
| e.character = event.character; |
| e.keyCode = event.keyCode; |
| e.keyLocation = event.keyLocation; |
| e.stateMask = event.stateMask; |
| notifyListeners (SWT.Verify, e); |
| event.text = e.text; |
| event.doit = e.doit; |
| break; |
| } |
| } |
| } |
| @Override |
| public boolean traverse(int event){ |
| /* |
| * When the traverse event is sent to the CCombo, it will create a list of |
| * controls to tab to next. Since the CCombo is a composite, the next control is |
| * the Text field which is a child of the CCombo. It will set focus to the text |
| * field which really is itself. So, call the traverse next events directly on the text. |
| */ |
| if (event == SWT.TRAVERSE_ARROW_NEXT || event == SWT.TRAVERSE_TAB_NEXT) { |
| return text.traverse(event); |
| } |
| return super.traverse(event); |
| } |
| } |