Ejemplo n.º 1
0
 /**
  * Removes an item from the combo box at a particular index
  *
  * @param index Index of the item to remove
  * @return Itself
  * @throws IndexOutOfBoundsException if the index is out of range
  */
 public synchronized ComboBox<V> remoteItem(int index) {
   items.remove(index);
   if (index < selectedIndex) {
     setSelectedIndex(selectedIndex - 1);
   } else if (index == selectedIndex) {
     setSelectedIndex(-1);
   }
   invalidate();
   return this;
 }
Ejemplo n.º 2
0
 /**
  * Adds a new item to the combo box, at a specific index
  *
  * @param index Index to add the item at
  * @param item Item to add
  * @return Itself
  */
 public synchronized ComboBox<V> addItem(int index, V item) {
   if (item == null) {
     throw new IllegalArgumentException("Cannot add null elements to a ComboBox");
   }
   items.add(index, item);
   if (index <= selectedIndex) {
     setSelectedIndex(selectedIndex + 1);
   }
   invalidate();
   return this;
 }
Ejemplo n.º 3
0
 /**
  * Adds a new item to the combo box, at the end
  *
  * @param item Item to add to the combo box
  * @return Itself
  */
 public synchronized ComboBox<V> addItem(V item) {
   if (item == null) {
     throw new IllegalArgumentException("Cannot add null elements to a ComboBox");
   }
   items.add(item);
   if (selectedIndex == -1 && items.size() == 1) {
     setSelectedIndex(0);
   }
   invalidate();
   return this;
 }
Ejemplo n.º 4
0
  private Result handleEditableCBKeyStroke(KeyStroke keyStroke) {
    // First check if we are in drop-down focused mode, treat keystrokes a bit differently then
    if (isDropDownFocused()) {
      switch (keyStroke.getKeyType()) {
        case ReverseTab:
        case ArrowLeft:
          dropDownFocused = false;
          textInputPosition = text.length();
          return Result.HANDLED;

          // The rest we can process in the same way as with read-only combo boxes when we are in
          // drop-down focused mode
        default:
          return handleReadOnlyCBKeyStroke(keyStroke);
      }
    }

    switch (keyStroke.getKeyType()) {
      case Character:
        text =
            text.substring(0, textInputPosition)
                + keyStroke.getCharacter()
                + text.substring(textInputPosition);
        textInputPosition++;
        return Result.HANDLED;

      case Tab:
        dropDownFocused = true;
        return Result.HANDLED;

      case Backspace:
        if (textInputPosition > 0) {
          text = text.substring(0, textInputPosition - 1) + text.substring(textInputPosition);
          textInputPosition--;
        }
        return Result.HANDLED;

      case Delete:
        if (textInputPosition < text.length()) {
          text = text.substring(0, textInputPosition) + text.substring(textInputPosition + 1);
        }
        return Result.HANDLED;

      case ArrowLeft:
        if (textInputPosition > 0) {
          textInputPosition--;
        } else {
          return Result.MOVE_FOCUS_LEFT;
        }
        return Result.HANDLED;

      case ArrowRight:
        if (textInputPosition < text.length()) {
          textInputPosition++;
        } else {
          dropDownFocused = true;
          return Result.HANDLED;
        }
        return Result.HANDLED;

      case ArrowDown:
        if (selectedIndex < items.size() - 1) {
          setSelectedIndex(selectedIndex + 1);
        }
        return Result.HANDLED;

      case ArrowUp:
        if (selectedIndex > 0) {
          setSelectedIndex(selectedIndex - 1);
        }
        return Result.HANDLED;

      default:
    }
    return super.handleKeyStroke(keyStroke);
  }
Ejemplo n.º 5
0
 /**
  * Removes all items from the combo box
  *
  * @return Itself
  */
 public synchronized ComboBox<V> clearItems() {
   items.clear();
   setSelectedIndex(-1);
   invalidate();
   return this;
 }