package org.eclipse.swt.widgets; /* * (c) Copyright IBM Corp. 2000, 2001, 2002. * All Rights Reserved */ import org.eclipse.swt.internal.*; import org.eclipse.swt.internal.photon.*; import org.eclipse.swt.*; import org.eclipse.swt.graphics.*; import org.eclipse.swt.events.*; /** * 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, Combos are used in the same place * where a single selection List widget could * be used but space is limited. A Combo takes * less space than a List widget and shows * similar information. *

* Note: Since Combos 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, * clearSelection() and deselectAll()). * 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. *

* Note that although this class is a subclass of Composite, * it does not make sense to add children to it, or set a layout on it. *

*
*
Styles:
*
DROP_DOWN, READ_ONLY, SIMPLE
*
Events:
*
DefaultSelection, Modify, Selection
*
*

* Note: Only one of the styles DROP_DOWN and SIMPLE * may be specified. *

* IMPORTANT: This class is not intended to be subclassed. *

* * @see List */ public class Combo extends Composite { /** * Constructs a new instance of this class given its parent * and a style value describing its behavior and appearance. *

* The style value is either one of the style constants defined in * class SWT which is applicable to instances of this * class, or must be built by bitwise OR'ing together * (that is, using the int "|" operator) two or more * of those SWT style constants. The class description * lists the style constants that are applicable to the class. * Style bits are also inherited from superclasses. *

* * @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 * @exception SWTException * * @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)); } 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; } public Point computeSize (int wHint, int hHint, boolean changed) { checkWidget(); //NOT DONE: this only works with a DROP_DOWN combo if ((style & SWT.SIMPLE) != 0) return new Point(100, 100); PhDim_t dim = new PhDim_t(); if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle); OS.PtWidgetPreferredSize(handle, dim); int width = dim.w; int height = dim.h; int textWidget = OS.PtWidgetChildBack(handle); OS.PtWidgetPreferredSize(textWidget, dim); height += dim.h; PhRect_t rect = new PhRect_t (); PhArea_t area = new PhArea_t (); OS.PtSetAreaFromWidgetCanvas (textWidget, rect, area); width += area.size_w; /* Calculate maximum text width */ int [] args = new int [] { OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0, OS.Pt_ARG_ITEMS, 0, 0, OS.Pt_ARG_TEXT_FONT, 0, 0, OS.Pt_ARG_TEXT_STRING, 0, 0, }; OS.PtGetResources (handle, args.length / 3, args); int maxWidth = 0; rect = new PhRect_t(); int str = args [10]; int font = args [7]; if (str != 0) { int length = OS.strlen (str); if (length > 0) { OS.PfExtentText(rect, null, font, str, length); maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1); } } int count = args [1]; int [] buffer = new int [1]; for (int i = 0; i < count; i++) { OS.memmove (buffer, args [4] + (i * 4), 4); str = buffer [0]; int length = OS.strlen (str); if (length > 0) { OS.PfExtentText(rect, null, font, str, length); maxWidth = Math.max(maxWidth, rect.lr_x - rect.ul_x + 1); } } if (maxWidth == 0) maxWidth = DEFAULT_WIDTH; width += maxWidth; if (wHint != SWT.DEFAULT || hHint != SWT.DEFAULT) { rect = new PhRect_t (); area = new PhArea_t (); rect.lr_x = (short) (wHint - 1); rect.lr_y = (short) (hHint - 1); OS.PtSetAreaFromWidgetCanvas (handle, rect, area); if (wHint != SWT.DEFAULT) width = area.size_w; if (hHint != SWT.DEFAULT) height = area.size_h; } return new Point(width, height); } void createHandle (int index) { state |= HANDLE; Display display = getDisplay (); int clazz = display.PtComboBox; int parentHandle = parent.parentingHandle (); int textFlags = (style & SWT.READ_ONLY) != 0 ? 0 : OS.Pt_EDITABLE; int [] args = { OS.Pt_ARG_TEXT_FLAGS, textFlags, OS.Pt_EDITABLE, OS.Pt_ARG_CBOX_MAX_VISIBLE_COUNT, 5, 0, OS.Pt_ARG_CBOX_FLAGS, (style & SWT.SIMPLE) != 0 ? OS.Pt_COMBOBOX_STATIC: 0, OS.Pt_COMBOBOX_STATIC, OS.Pt_ARG_RESIZE_FLAGS, 0, OS.Pt_RESIZE_XY_BITS, }; handle = OS.PtCreateWidget (clazz, parentHandle, args.length / 3, args); if (handle == 0) error (SWT.ERROR_NO_HANDLES); } /** * 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 */ public void deselect (int index) { checkWidget(); int [] args = new int [] {OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (args [1] == index) { args = new int [] { OS.Pt_ARG_TEXT_STRING, 0, 0, OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0 }; OS.PtSetResources (handle, args.length / 3, args); } } /** * Deselects all selected items in the receiver's list. *

* Note: To clear the selection in the receiver's text field, * use clearSelection(). *

* * @exception SWTException * * @see #clearSelection */ public void deselectAll () { checkWidget(); int [] args = new int [] { OS.Pt_ARG_TEXT_STRING, 0, 0, OS.Pt_ARG_CBOX_SELECTION_ITEM, 0, 0 }; OS.PtSetResources (handle, args.length / 3, args); } /** * Adds the argument to the end of the receiver's list. * * @param string the new item * * @exception IllegalArgumentException * @exception SWTException * @exception SWTError * * @see #add(String,int) */ public void add (String string) { checkWidget(); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); byte [] buffer = Converter.wcsToMbcs (null, string, true); int ptr = OS.malloc (buffer.length); OS.memmove (ptr, buffer, buffer.length); OS.PtListAddItems (handle, new int [] {ptr}, 1, 0); OS.free (ptr); } /** * Adds the argument to the receiver's list at the given * zero-relative index. *

* Note: To add an item at the end of the list, use the * result of calling getItemCount() as the * index or use add(String). *

* * @param string the new item * @param index the index for the item * * @exception IllegalArgumentException * @exception SWTException * @exception SWTError * * @see #add(String) */ public void add (String string, int index) { checkWidget(); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); if (index == -1) error (SWT.ERROR_INVALID_RANGE); byte [] buffer = Converter.wcsToMbcs (null, string, true); int ptr = OS.malloc (buffer.length); OS.memmove (ptr, buffer, buffer.length); int result = OS.PtListAddItems (handle, new int [] {ptr}, 1, index + 1); OS.free (ptr); if (result != 0) { int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (0 <= index && index <= args [1]) error (SWT.ERROR_ITEM_NOT_ADDED); error (SWT.ERROR_INVALID_RANGE); } } /** * 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 ModifyListener * interface. * * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @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 receiver's selection changes, by sending * it one of the messages defined in the SelectionListener * interface. *

* widgetSelected is called when the combo's list selection changes. * widgetDefaultSelected is typically called when ENTER is pressed the combo's text area. *

* * @param listener the listener which should be notified * * @exception IllegalArgumentException * @exception SWTException * * @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); } 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. *

* Note: To clear the selected items in the receiver's list, * use deselectAll(). *

* * @exception SWTException * * @see #deselectAll */ public void clearSelection () { checkWidget(); OS.PtTextSetSelection (handle, new int [] {0}, new int [] {0}); } void deregister () { super.deregister (); int child = OS.PtWidgetChildBack (handle); WidgetTable.remove (child); } int focusHandle () { /* * Fetuare in Photon. The combo box does not receive * Pt_CB_GOT_FOCUS and Pt_CB_LOST_FOCUS callbacks itself. * Only the internal PtText receives them. The fix is to * add these callbacks in the internal PtText. */ return OS.PtWidgetChildBack (handle); } /** * 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 * @exception SWTException * @exception SWTError */ public String getItem (int index) { checkWidget(); int [] args = new int [] { OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0, OS.Pt_ARG_ITEMS, 0, 0, }; OS.PtGetResources (handle, args.length / 3, args); if (!(0 <= index && index < args [1])) { error (SWT.ERROR_INVALID_RANGE); } int [] items = new int [1]; OS.memmove (items, args [4] + (index * 4), 4); int length = OS.strlen (items [0]); byte [] buffer = new byte [length]; OS.memmove (buffer, items [0], length); char [] unicode = Converter.mbcsToWcs (null, buffer); return new String (unicode); } /** * Returns the number of items contained in the receiver's list. * * @return the number of items * * @exception SWTException * @exception SWTError */ public int getItemCount () { checkWidget(); int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); return args [1]; } /** * Returns the height of the area which would be used to * display one of the items in the receiver's list. * * @return the height of one item * * @exception SWTException * @exception SWTError */ public int getItemHeight () { checkWidget(); //NOT DONE - NOT NEEDED return 0; } /** * Returns an array of Strings which are the items * in the receiver's list. *

* 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. *

* * @return the items in the receiver's list * * @exception SWTException * @exception SWTError */ public String [] getItems () { checkWidget(); int [] args = new int [] { OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0, OS.Pt_ARG_ITEMS, 0, 0, }; OS.PtGetResources (handle, args.length / 3, args); int [] items = new int [args [1]]; OS.memmove (items, args [4], args [1] * 4); String [] result = new String [args [1]]; for (int i=0; iPoint 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 */ public Point getSelection () { checkWidget(); if (((style & SWT.DROP_DOWN) != 0) && ((style & SWT.READ_ONLY) != 0)) { int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); int length = 0; if (args [1] != 0) length = OS.strlen (args [1]); return new Point (0, length); } // if (textVerify != null) { // return new Point (textVerify.start_pos, textVerify.end_pos); // } int [] start = new int [1], end = new int [1]; OS.PtTextGetSelection (handle, start, end); if (start [0] == -1) { int [] args = {OS.Pt_ARG_CURSOR_POSITION, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); start [0] = end [0] = args [1]; } return new Point (start [0], end [0]); } /** * 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 */ public int getSelectionIndex () { checkWidget(); int [] args = new int [] { OS.Pt_ARG_LIST_SEL_COUNT, 0, 0, OS.Pt_ARG_SELECTION_INDEXES, 0, 0, }; OS.PtGetResources (handle, args.length / 3, args); if (args [1] == 0) return -1; short [] buffer = new short [1]; OS.memmove (buffer, args [4], 2); return buffer [0] - 1; } /** * Returns a string containing a copy of the contents of the * receiver's text field. * * @return the receiver's text * * @exception SWTException */ public String getText () { checkWidget(); int [] args = {OS.Pt_ARG_TEXT_STRING, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (args [1] == 0) return ""; int length = OS.strlen (args [1]); byte [] buffer = new byte [length]; OS.memmove (buffer, args [1], length); char [] unicode = Converter.mbcsToWcs (null, buffer); return new String (unicode); } /** * Returns the height of the receivers's text field. * * @return the text height * * @exception SWTException * @exception SWTError */ public int getTextHeight () { checkWidget(); //NOT DONE - Only works for DROP_DOWN PhDim_t dim = new PhDim_t(); if (!OS.PtWidgetIsRealized (handle)) OS.PtExtentWidgetFamily (handle); OS.PtWidgetPreferredSize(handle, dim); int height = dim.h; int text = OS.PtWidgetChildBack(handle); OS.PtWidgetPreferredSize(text, dim); height += dim.h; return height; } /** * Returns the maximum number of characters that the receiver's * text field is capable of holding. If this has not been changed * by setTextLimit(), it will be the constant * Combo.LIMIT. * * @return the text limit * * @exception SWTException */ public int getTextLimit () { checkWidget(); int [] args = new int [] {OS.Pt_ARG_MAX_LENGTH, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); return args [1]; } boolean hasFocus () { return OS.PtIsFocused (handle) != 0; } void hookEvents () { super.hookEvents (); int windowProc = getDisplay ().windowProc; OS.PtAddCallback (handle, OS.Pt_CB_SELECTION, windowProc, SWT.Selection); OS.PtAddCallback (handle, OS.Pt_CB_TEXT_CHANGED, windowProc, SWT.Modify); } /** * 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 * @exception SWTException */ public int indexOf (String string) { checkWidget(); byte [] buffer = Converter.wcsToMbcs (null, string, true); return OS.PtListItemPos(handle, buffer) - 1; } /** * 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 * @return the index of the item * * @exception IllegalArgumentException * @exception SWTException */ public int indexOf (String string, int start) { checkWidget(); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); // NOT DONE - start is ignored return indexOf (string); } int processModify (int info) { sendEvent (SWT.Modify); return OS.Pt_CONTINUE; } int processPaint (int damage) { OS.PtSuperClassDraw (OS.PtComboBox (), handle, damage); sendPaintEvent (damage); return OS.Pt_CONTINUE; } int processSelection (int info) { if (info == 0) return OS.Pt_CONTINUE; PtCallbackInfo_t cbinfo = new PtCallbackInfo_t (); OS.memmove (cbinfo, info, PtCallbackInfo_t.sizeof); if (cbinfo.reason_subtype == OS.Pt_LIST_SELECTION_FINAL) { postEvent(SWT.Selection); } return OS.Pt_CONTINUE; } void register () { super.register (); int child = OS.PtWidgetChildBack (handle); WidgetTable.put (child, this); } /** * 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 * @exception SWTException * @exception SWTError */ public void remove (int start, int end) { checkWidget(); int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (!(0 < start && start <= end && end < args [1])) { error (SWT.ERROR_INVALID_RANGE); } int count = end - start + 1; int result = OS.PtListDeleteItemPos (handle, count, start + 1); if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED); } /** * Removes the item from the receiver's list at the given * zero-relative index. * * @param index the index for the item * * @exception IllegalArgumentException * @exception SWTException * @exception SWTError */ public void remove (int index) { checkWidget(); int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (!(0 <= index && index < args [1])) error (SWT.ERROR_INVALID_RANGE); int result = OS.PtListDeleteItemPos (handle, 1, index + 1); if (result != 0) error (SWT.ERROR_ITEM_NOT_REMOVED); } /** * 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 * @exception SWTException * @exception SWTError */ public void remove (String string) { checkWidget(); int index = indexOf (string, 0); if (index == -1) error (SWT.ERROR_ITEM_NOT_REMOVED); remove (index); } /** * Removes all of the items from the receiver's list. *

* @exception SWTException

*/ public void removeAll () { checkWidget(); OS.PtListDeleteAllItems (handle); } /** * 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 * @exception SWTException * * @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 receiver's selection changes. * * @param listener the listener which should no longer be notified * * @exception IllegalArgumentException * @exception SWTException * * @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); } /** * 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 */ public void select (int index) { checkWidget(); if (index < 0) return; OS.PtSetResource (handle, OS.Pt_ARG_CBOX_SELECTION_ITEM, index + 1, 0); } boolean setBounds (int x, int y, int width, int height, boolean move, boolean resize) { checkWidget(); int newHeight = (resize && (style & SWT.DROP_DOWN) != 0) ? getTextHeight() : height; return super.setBounds (x, y, width, newHeight, move, resize); } /** * 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 remove'ing the old item at the index, and then * add'ing the new item at that index. * * @param index the index for the item * @param string the new text for the item * * @exception IllegalArgumentException * @exception SWTException * @exception SWTError */ public void setItem (int index, String string) { checkWidget(); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); int [] args = new int [] {OS.Pt_ARG_LIST_ITEM_COUNT, 0, 0}; OS.PtGetResources (handle, args.length / 3, args); if (!(0 <= index && index < args [1])) { error (SWT.ERROR_INVALID_RANGE); } byte [] buffer = Converter.wcsToMbcs (null, string, true); int ptr = OS.malloc (buffer.length); OS.memmove (ptr, buffer, buffer.length); OS.PtListReplaceItemPos (handle, new int [] {ptr}, 1, index + 1); OS.free (ptr); } /** * Sets the receiver's list to be the given array of items. * * @param items the array of items * * @exception SWTException * @exception SWTError */ public void setItems (String [] items) { checkWidget(); if (items == null) error (SWT.ERROR_NULL_ARGUMENT); OS.PtListDeleteAllItems (handle); int[] itemsPtr = new int [items.length]; for (int i=0; i *
  • ERROR_NULL_ARGUMENT - if the point is null
    • * * @exception SWTException */ public void setSelection (Point selection) { checkWidget(); if (selection == null) error (SWT.ERROR_NULL_ARGUMENT); OS.PtTextSetSelection (handle, new int [] {selection.x}, new int [] {selection.y}); } /** * Sets the contents of the receiver's text field to the * given string. *

    * Note: The text field in a Combo 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. *

    * * @param text the new text * * @exception IllegalArgumentException * @exception SWTException */ public void setText (String string) { checkWidget(); if (string == null) error (SWT.ERROR_NULL_ARGUMENT); byte [] buffer = Converter.wcsToMbcs (null, string, true); if ((style & SWT.READ_ONLY) != 0) { int index = OS.PtListItemPos(handle, buffer); if (index > 0) { OS.PtSetResource (handle, OS.Pt_ARG_CBOX_SELECTION_ITEM, index, 0); // sendEvent (SWT.Modify); } return; } int ptr = OS.malloc (buffer.length); OS.memmove (ptr, buffer, buffer.length); OS.PtSetResource (handle, OS.Pt_ARG_TEXT_STRING, ptr, 0); OS.free (ptr); } /** * 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 * @exception SWTException */ public void setTextLimit (int limit) { checkWidget(); if (limit == 0) error (SWT.ERROR_CANNOT_BE_ZERO); OS.PtSetResource (handle, OS.Pt_ARG_MAX_LENGTH, limit, 0); } int traversalCode (int key_sym, PhKeyEvent_t ke) { int code = super.traversalCode (key_sym, ke); if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) { code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS); } if ((style & SWT.READ_ONLY) == 0) { if (key_sym == OS.Pk_Up || key_sym == OS.Pk_Down) { code &= ~(SWT.TRAVERSE_ARROW_NEXT | SWT.TRAVERSE_ARROW_PREVIOUS); } } return code; } boolean translateTraversal (int key_sym, PhKeyEvent_t phEvent) { boolean translated = super.translateTraversal (key_sym, phEvent); if (!translated && key_sym == OS.Pk_Return) { postEvent (SWT.DefaultSelection); return false; } return translated; } }