Esempio n. 1
0
  /**
   * Fired when a keyboard action generates a character. This occurs after onKeyDown and onKeyUp are
   * fired for the physical key that was pressed.
   *
   * <p>It should be noted that many browsers do not generate keypress events for non-printing
   * keyCode values, such as KEY_ENTER or arrow keys. These keyCodes can be reliably captured either
   * with onKeyDown(Widget, char, int) or onKeyUp(Widget, char, int).
   *
   * <p>Subclasses that override this method must call <tt>super.onKeyPress(sender, keyCode,
   * modifiers)</tt> to ensure that the Widget recieves its events.
   *
   * @param sender the widget that was focused when the event occurred.
   * @see com.google.gwt.user.client.ui.KeyboardListener
   */
  public void onKeyPress(KeyPressEvent event) {
    Widget sender = (Widget) event.getSource();
    char keyCode = event.getCharCode();

    if (sender == tbHexColor) {
      // Disallow non-hex in hexadecimal boxes
      if ((!Character.isDigit(keyCode))
          && (keyCode != 'A')
          && (keyCode != 'a')
          && (keyCode != 'B')
          && (keyCode != 'b')
          && (keyCode != 'C')
          && (keyCode != 'c')
          && (keyCode != 'D')
          && (keyCode != 'd')
          && (keyCode != 'E')
          && (keyCode != 'e')
          && (keyCode != 'F')
          && (keyCode != 'f')
          && (keyCode != (char) KeyCodes.KEY_TAB)
          && (keyCode != (char) KeyCodes.KEY_BACKSPACE)
          && (keyCode != (char) KeyCodes.KEY_DELETE)
          && (keyCode != (char) KeyCodes.KEY_ENTER)
          && (keyCode != (char) KeyCodes.KEY_HOME)
          && (keyCode != (char) KeyCodes.KEY_END)
          && (keyCode != (char) KeyCodes.KEY_LEFT)
          && (keyCode != (char) KeyCodes.KEY_UP)
          && (keyCode != (char) KeyCodes.KEY_RIGHT)
          && (keyCode != (char) KeyCodes.KEY_DOWN)) {
        ((TextBox) sender).cancelKey();
      }
    } else {
      // Disallow non-numerics in numeric boxes
      if ((!Character.isDigit(keyCode))
          && (keyCode != (char) KeyCodes.KEY_TAB)
          && (keyCode != (char) KeyCodes.KEY_BACKSPACE)
          && (keyCode != (char) KeyCodes.KEY_DELETE)
          && (keyCode != (char) KeyCodes.KEY_ENTER)
          && (keyCode != (char) KeyCodes.KEY_HOME)
          && (keyCode != (char) KeyCodes.KEY_END)
          && (keyCode != (char) KeyCodes.KEY_LEFT)
          && (keyCode != (char) KeyCodes.KEY_UP)
          && (keyCode != (char) KeyCodes.KEY_RIGHT)
          && (keyCode != (char) KeyCodes.KEY_DOWN)) {
        ((TextBox) sender).cancelKey();
      }
    }
  }
  public void onKeyPress(Widget sender, char keyCode, int modifiers) {
    if ((!Character.isDigit(keyCode))
        && (!((keyCode == KEY_TAB)
            || (keyCode == KEY_ENTER)
            || (keyCode == KEY_BACKSPACE)
            || (keyCode == KEY_DELETE)
            || (keyCode == KEY_LEFT)
            || (keyCode == KEY_RIGHT)
            || (keyCode == KEY_UP)
            || (keyCode == KEY_DOWN)
            || (keyCode == KEY_HOME)
            || (keyCode == KEY_END)
            || (keyCode == '-')))) {

      TextBox textBox = (TextBox) sender;
      textBox.cancelKey();
    }
  }
Esempio n. 3
0
 protected void allowDigitsOnly(KeyPressEvent event) {
   event.getNativeEvent().getKeyCode();
   // This is for support for firefox for special characters like enter,tab,etc...
   if (event.getUnicodeCharCode() == 0) {
     return;
   }
   if (event.getNativeEvent().getKeyCode() == KeyCodes.KEY_BACKSPACE
       || event.getNativeEvent().getKeyCode() == KeyCodes.KEY_ENTER
       || event.getNativeEvent().getKeyCode() == KeyCodes.KEY_TAB
       || event.getNativeEvent().getKeyCode() == 46 /*dot symbol*/
       || event.getUnicodeCharCode() == 46 /*firefox dot symbol*/
       || event.getNativeEvent().getKeyCode() == 45 /*minus symbol*/
       || event.getUnicodeCharCode() == 45 /*firefox minus symbol*/) {
     return;
   }
   if (!Character.isDigit(event.getCharCode())) {
     setMessage("invalid value");
     textbox.cancelKey();
   } else {
     clearMessage();
   }
 }