public Text text;

  protected ImageHyperlink icon;

  protected List list;

  protected  int visibleItemCount = 5;

  public  Shell popup;

  protected  Button arrow;

  protected  boolean hasFocus;

  protected  Listener listener, filter;

  protected  Color foreground, background;

  protected  Font font;  

 

  public CCombo (Composite parent, int style) {

    super (parent, style = checkStyle (style));

   

    int textStyle = SWT.SINGLE;

    if ((style & SWT.READ_ONLY) != 0) textStyle |= SWT.READ_ONLY;

    if ((style & SWT.FLAT) != 0) textStyle |= SWT.FLAT;

    text = new Text (this, textStyle );

    int arrowStyle = SWT.ARROW | SWT.DOWN;

    if ((style & SWT.FLAT) != 0) arrowStyle |= SWT.FLAT;

    arrow = new Button (this, arrowStyle);

    listener = new Listener () {

      public void handleEvent (Event event) {

        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) {

          handleFocus (SWT.FocusOut);

        }

      }

    };

    filter = new Listener() {

      public void handleEvent(Event event) {

        Shell shell = ((Control)event.widget).getShell ();

        if (shell == CCombo.this.getShell ()) {

          handleFocus (SWT.FocusOut);

        }

      }

    };

   

    int [] comboEvents = {SWT.Dispose, SWT.Move, SWT.Resize};

    for (int i=0; i<comboEvents.length; i++) this.addListener (comboEvents [i], listener);

   

    int [] textEvents = {SWT.KeyDown, SWT.KeyUp, SWT.Modify, SWT.MouseDown, SWT.MouseUp, SWT.Traverse, SWT.FocusIn};

    for (int i=0; i<textEvents.length; i++) text.addListener (textEvents [i], listener);

   

    int [] arrowEvents = {SWT.Selection, SWT.FocusIn};

    for (int i=0; i<arrowEvents.length; i++) arrow.addListener (arrowEvents [i], listener);

   

    createPopup(null, -1);

    initAccessible();

  }

  static int checkStyle (int style) {

    int mask = SWT.BORDER | SWT.READ_ONLY | SWT.FLAT | SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;

    return style & mask;

  }

  /**

   * Adds the argument to the end of the receiver's list.

   *

   * @param string the new item

   *

   * @exception IllegalArgumentException <ul>

   *    <li>ERROR_NULL_ARGUMENT - if the string is null</li>

   * </ul>

   * @exception SWTException <ul>

   *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>

   *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>

   * </ul>

   *

   * @see #add(String,int)

   */

  public void add (String string) {

    checkWidget();

    if (string == null) 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>

   *

   * @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

   */

  @SuppressWarnings("hiding")

  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 receiver's selection changes, 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

   *

   * @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

   */

  @SuppressWarnings("hiding")

  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);

  }

 

  void arrowEvent (Event event) {

    switch (event.type) {

      case SWT.FocusIn: {

        handleFocus (SWT.FocusIn);

        break;

      }

      case SWT.Selection: {

        dropDown (!isDropped ());

        break;

      }

    }

  }

  /**

   * 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:

        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;

        break;

      case SWT.Move:

        dropDown (false);

        break;

      case SWT.Resize:

        internalLayout (false);

        break;

    }

  }

  public Point computeSize (int wHint, int hHint, boolean changed) {

    checkWidget ();

    int width = 0, height = 0;

    String[] items = list.getItems ();

    int textWidth = 0;

    GC gc = new GC (text);

    int spacer = gc.stringExtent (" ").x; //$NON-NLS-1$

    for (int i = 0; i < items.length; i++) {

      textWidth = Math.max (gc.stringExtent (items[i]).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 (wHint, SWT.DEFAULT, changed);

    int borderWidth = getBorderWidth ();

   

    if(icon == null) {

      height = Math.max (hHint, Math.max (textSize.y, arrowSize.y) + 2*borderWidth);

      width = Math.max (wHint, Math.max (textWidth + 2*spacer + arrowSize.x + 2*borderWidth, listSize.x));

    } else {

      Point iconSize = icon.computeSize (SWT.DEFAULT, SWT.DEFAULT, changed);

      height = Math.max (hHint, Math.max (textSize.y, arrowSize.y) + 2*borderWidth);

      width = Math.max (wHint, Math.max (textWidth + 2*spacer + arrowSize.x + iconSize.x + 2*borderWidth, listSize.x));

    }

//    width = Math.max (wHint, Math.max (textWidth + 2*spacer + arrowSize.x + 2*borderWidth, listSize.x));

    return new Point (width, height);

  }

 

  void createPopup(String[] items, int selectionIndex) {   

      // create shell and list

      popup = new Shell (getShell (), SWT.NO_TRIM | SWT.ON_TOP);

      popup.setLayout(new FillLayout());

      int style = getStyle ();

      int listStyle = SWT.SINGLE | SWT.V_SCROLL | SWT.BORDER;

      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, SWT.Deactivate};

      for (int i=0; i<popupEvents.length; i++) popup.addListener (popupEvents [i], listener);

      int [] listEvents = {SWT.MouseUp, SWT.Selection, SWT.Traverse, SWT.KeyDown, SWT.KeyUp, SWT.FocusIn, SWT.Dispose};

      for (int i=0; i<listEvents.length; i++) list.addListener (listEvents [i], listener);

     

      if (items != null) list.setItems (items);

      if (selectionIndex != -1) list.setSelection (selectionIndex);

  }

  /**

   * 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 ();

    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 ();

    list.deselectAll ();

  }

 

  void dropDown (boolean drop) {

    dropDown(drop, true);

  }

 

  public void dropDown (boolean drop, boolean focus) {

    if (drop == isDropped ()) return;

    if (!drop) {

      popup.setVisible (false);

      if (!isDisposed ()&& arrow.isFocusControl()) {

        text.setFocus();

      }

      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);

    }

   

    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);

   

    int index = list.getSelectionIndex ();

    if (index != -1) list.setTopIndex (index);

    Display display = getDisplay ();

    Rectangle listRect = list.getBounds ();

    Rectangle parentRect = display.map (getParent (), null, getBounds ());

    Point comboSize = getSize ();

    Rectangle displayRect = getMonitor ().getClientArea ();

    int width = Math.max(comboSize.x, listRect.width + 2);

    int height = listRect.height + 2;

    int x = parentRect.x;

    int y = parentRect.y + comboSize.y;

    if (y + height > displayRect.y + displayRect.height) y = parentRect.y - height;

    popup.setBounds (x, y, width, listSize.y);

    popup.setVisible (true);

    if(focus) list.setFocus ();

  }

  /*

   * Return the Label immediately preceding the receiver in the z-order,

   * or null if none.

   */

  Label getAssociatedLabel () {

    Control[] siblings = getParent ().getChildren ();

    for (int i = 0; i < siblings.length; i++) {

      if (siblings [i] == CCombo.this) {

        if (i > 0 && siblings [i-1] instanceof Label) {

          return (Label) siblings [i-1];

        }

      }

    }

    return null;

  }

  public Control [] getChildren () {

    checkWidget();

    return new Control [0];

  }

  /**

   * Gets the editable state.

   *

   * @return whether or not the reciever 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 ();

  }

  char getMnemonic (String string) {

    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 string.charAt (index);

      index++;

    } while (index < length);

    return '\0';

  }

  /**

   * 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 ();

  }

  public int getStyle () {

    int style = super.getStyle ();

    style &= ~SWT.READ_ONLY;

    if (!text.getEditable()) style |= SWT.READ_ONLY;

    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) {

    if (isDisposed ()) return;

    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 == icon

            || 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;

      }

    }

  }

  /**

   * 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 () {

      public void getName (AccessibleEvent e) {

        String name = null;

        Label label = getAssociatedLabel ();

        if (label != null) {

          name = stripMnemonic (label.getText());

        }

        e.result = name;

      }

      public void getKeyboardShortcut(AccessibleEvent e) {

        String shortcut = null;

        Label label = getAssociatedLabel ();

        if (label != null) {

          String txt = label.getText ();

          if (txt != null) {

            char mnemonic = getMnemonic (txt);

            if (mnemonic != '\0') {

              shortcut = "Alt+"+mnemonic; //$NON-NLS-1$

            }

          }

        }

        e.result = shortcut;

      }

      public void getHelp (AccessibleEvent e) {

        e.result = getToolTipText ();

      }

    };

    getAccessible ().addAccessibleListener (accessibleAdapter);

    text.getAccessible ().addAccessibleListener (accessibleAdapter);

    list.getAccessible ().addAccessibleListener (accessibleAdapter);

   

    arrow.getAccessible ().addAccessibleListener (new AccessibleAdapter() {

      public void getName (AccessibleEvent e) {

        e.result = isDropped () ? SWT.getMessage ("SWT_Close") : SWT.getMessage ("SWT_Open"); //$NON-NLS-1$ //$NON-NLS-2$

      }

      public void getKeyboardShortcut (AccessibleEvent e) {

        e.result = "Alt+Down Arrow"; //$NON-NLS-1$

      }

      public void getHelp (AccessibleEvent e) {

        e.result = getToolTipText ();

      }

    });

    getAccessible().addAccessibleTextListener (new AccessibleTextAdapter() {

      public void getCaretOffset (AccessibleTextEvent e) {

        e.offset = text.getCaretPosition ();

      }

    });

   

    getAccessible().addAccessibleControlListener (new AccessibleControlAdapter() {

      public void getChildAtPoint (AccessibleControlEvent e) {

        Point testPoint = toControl (e.x, e.y);

        if (getBounds ().contains (testPoint)) {

          e.childID = ACC.CHILDID_SELF;

        }

      }

     

      public void getLocation (AccessibleControlEvent e) {

        Rectangle location = getBounds ();

        Point pt = toDisplay (location.x, location.y);

        e.x = pt.x;

        e.y = pt.y;

        e.width = location.width;

        e.height = location.height;

      }

     

      public void getChildCount (AccessibleControlEvent e) {

        e.detail = 0;

      }

     

      public void getRole (AccessibleControlEvent e) {

        e.detail = ACC.ROLE_COMBOBOX;

      }

     

      public void getState (AccessibleControlEvent e) {

        e.detail = ACC.STATE_NORMAL;

      }

      public void getValue (AccessibleControlEvent e) {

        e.result = getText ();

      }

    });

    text.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter () {

      public void getRole (AccessibleControlEvent e) {

        e.detail = text.getEditable () ? ACC.ROLE_TEXT : ACC.ROLE_LABEL;

      }

    });

    arrow.getAccessible ().addAccessibleControlListener (new AccessibleControlAdapter() {

      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 popup.getVisible ();

  }

  public boolean isFocusControl () {

    checkWidget();

    if (text.isFocusControl () || icon.isFocusControl ()

        || arrow.isFocusControl () || list.isFocusControl () || popup.isFocusControl ()) {

      return true;

    }

    return super.isFocusControl ();

  }

 

  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);

//    arrow.setBounds (width - arrowSize.x, 0, arrowSize.x, arrowSize.y);

   

    if(icon != null) {

      Point iconSize = icon.computeSize (SWT.DEFAULT, height, changed);

      text.setBounds (0, 0, width - arrowSize.x - iconSize.x, height);

      icon.setBounds (width - arrowSize.x - iconSize.x, 0, iconSize.x, height);

      arrow.setBounds (width - arrowSize.x, 0, arrowSize.x, arrowSize.y);

    } else {

      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.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));

        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;

        }

        Event e = new Event ();

        e.time = event.time;

        e.detail = event.detail;

        e.doit = event.doit;

        e.character = event.character;

        e.keyCode = event.keyCode;

        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.stateMask = event.stateMask;

        notifyListeners (SWT.KeyUp, e);

        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.stateMask = event.stateMask;

        notifyListeners(SWT.KeyDown, e);

        break;

       

      }

    }

  }

  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;

      case SWT.Deactivate:

        dropDown (false);

        break;

    }

  }

  public void redraw () {

    super.redraw();

    text.redraw();

    arrow.redraw();

    if(icon != null) icon.redraw();

    if (popup.isVisible()) list.redraw();

  }

  @SuppressWarnings("unused")

  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.

   * <p>

   * @exception SWTException <ul>

   *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>

   *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>

   * </ul>

   */

  public void removeAll () {

    checkWidget();

    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

   */

  @SuppressWarnings("hiding")

  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 receiver's selection changes.

   *

   * @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

   */

  @SuppressWarnings("hiding")

  public void removeSelectionListener (SelectionListener listener) {

    checkWidget();

    if (listener == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);

    removeListener(SWT.Selection, listener);

    removeListener(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 <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));

        text.selectAll ();

        list.select (index);

        list.showSelection ();

      }

    }

  }

  public void setBackground (Color color) {

    super.setBackground(color);

    background = color;

    if (text != null) text.setBackground(color);

    if (list != null) list.setBackground(color);

    if (icon != null) icon.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);

  }

  public void setEnabled (boolean enabled) {

    super.setEnabled(enabled);

    if (popup != null) popup.setVisible (false);

    if (text != null) text.setEnabled(enabled);

    if (icon != null) icon.setEnabled(enabled);

    if (arrow != null) arrow.setEnabled(enabled);

  }

  public boolean setFocus () {

    checkWidget();

    return text.setFocus ();

  }

  public void setFont (Font font) {

    super.setFont (font);

    this.font = font;

    text.setFont (font);

    list.setFont (font);

    internalLayout (true);

    if(icon != null) icon.setFont (font);

  }

  public void setForeground (Color color) {

    super.setForeground(color);

    foreground = color;

    if (text != null) text.setForeground(color);

    if (icon != null) icon.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>

   */

  @SuppressWarnings("unused")

  public void setLayout (Layout layout) {

    checkWidget ();

    return;

  }

  /**

   * 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>

   *

   * @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);

    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);

  }

  public void setToolTipText (String string) {

    checkWidget();

    super.setToolTipText(string);

    arrow.setToolTipText (string);

    text.setToolTipText (string);  

  }

  public void setVisible (boolean visible) {

    super.setVisible(visible);

    if (!visible) popup.setVisible(false);

  }