Пример #1
0
  /**
   * Processes a key event forwarded from the <code>MenuSelectionManager</code> and changes the menu
   * selection, if necessary, by using <code>MenuSelectionManager</code>'s API.
   *
   * <p>Note: you do not have to forward the event to sub-components. This is done automatically by
   * the <code>MenuSelectionManager</code>.
   *
   * @param e a <code>KeyEvent</code>
   * @param path the <code>MenuElement</code> path array
   * @param manager the <code>MenuSelectionManager</code>
   */
  public void processKeyEvent(KeyEvent e, MenuElement path[], MenuSelectionManager manager) {
    MenuKeyEvent mke =
        new MenuKeyEvent(
            e.getComponent(),
            e.getID(),
            e.getWhen(),
            e.getModifiers(),
            e.getKeyCode(),
            e.getKeyChar(),
            path,
            manager);
    processMenuKeyEvent(mke);

    if (mke.isConsumed()) {
      e.consume();
    }
  }
Пример #2
0
  public void keyReleased(KeyEvent e) {
    char ch = e.getKeyChar();
    if (ch == KeyEvent.CHAR_UNDEFINED || Character.isISOControl(ch)) return;
    int pos = m_editor.getCaretPosition();
    String str = m_editor.getText();
    if (str.length() == 0) return;

    for (int k = 0; k < m_comboBox.getItemCount(); k++) {
      String item = m_comboBox.getItemAt(k).toString();
      if (item.startsWith(str)) {
        m_editor.setText(item);
        m_editor.setCaretPosition(item.length());
        m_editor.moveCaretPosition(pos);
        m_comboBox.setSelectedItem(item);
        break;
      }
    }
  }
Пример #3
0
  /**
   * This method is called when the focused component (and none of its ancestors) want the key
   * event. This will look up the keystroke to see if any chidren (or subchildren) of the specified
   * container want a crack at the event. If one of them wants it, then it will "DO-THE-RIGHT-THING"
   */
  public boolean fireKeyboardAction(KeyEvent e, boolean pressed, Container topAncestor) {

    if (e.isConsumed()) {
      System.out.println("Acquired pre-used event!");
      Thread.dumpStack();
    }

    // There may be two keystrokes associated with a low-level key event;
    // in this case a keystroke made of an extended key code has a priority.
    KeyStroke ks;
    KeyStroke ksE = null;

    if (e.getID() == KeyEvent.KEY_TYPED) {
      ks = KeyStroke.getKeyStroke(e.getKeyChar());
    } else {
      if (e.getKeyCode() != e.getExtendedKeyCode()) {
        ksE = KeyStroke.getKeyStroke(e.getExtendedKeyCode(), e.getModifiers(), !pressed);
      }
      ks = KeyStroke.getKeyStroke(e.getKeyCode(), e.getModifiers(), !pressed);
    }

    Hashtable keyMap = containerMap.get(topAncestor);
    if (keyMap != null) { // this container isn't registered, so bail

      Object tmp = null;
      // extended code has priority
      if (ksE != null) {
        tmp = keyMap.get(ksE);
        if (tmp != null) {
          ks = ksE;
        }
      }
      if (tmp == null) {
        tmp = keyMap.get(ks);
      }

      if (tmp == null) {
        // don't do anything
      } else if (tmp instanceof JComponent) {
        JComponent c = (JComponent) tmp;
        if (c.isShowing() && c.isEnabled()) { // only give it out if enabled and visible
          fireBinding(c, ks, e, pressed);
        }
      } else if (tmp instanceof Vector) { // more than one comp registered for this
        Vector v = (Vector) tmp;
        // There is no well defined order for WHEN_IN_FOCUSED_WINDOW
        // bindings, but we give precedence to those bindings just
        // added. This is done so that JMenus WHEN_IN_FOCUSED_WINDOW
        // bindings are accessed before those of the JRootPane (they
        // both have a WHEN_IN_FOCUSED_WINDOW binding for enter).
        for (int counter = v.size() - 1; counter >= 0; counter--) {
          JComponent c = (JComponent) v.elementAt(counter);
          // System.out.println("Trying collision: " + c + " vector = "+ v.size());
          if (c.isShowing() && c.isEnabled()) { // don't want to give these out
            fireBinding(c, ks, e, pressed);
            if (e.isConsumed()) return true;
          }
        }
      } else {
        System.out.println("Unexpected condition in fireKeyboardAction " + tmp);
        // This means that tmp wasn't null, a JComponent, or a Vector.  What is it?
        Thread.dumpStack();
      }
    }

    if (e.isConsumed()) {
      return true;
    }
    // if no one else handled it, then give the menus a crack
    // The're handled differently.  The key is to let any JMenuBars
    // process the event
    if (keyMap != null) {
      Vector v = (Vector) keyMap.get(JMenuBar.class);
      if (v != null) {
        Enumeration iter = v.elements();
        while (iter.hasMoreElements()) {
          JMenuBar mb = (JMenuBar) iter.nextElement();
          if (mb.isShowing() && mb.isEnabled()) { // don't want to give these out
            boolean extended = (ksE != null) && !ksE.equals(ks);
            if (extended) {
              fireBinding(mb, ksE, e, pressed);
            }
            if (!extended || !e.isConsumed()) {
              fireBinding(mb, ks, e, pressed);
            }
            if (e.isConsumed()) {
              return true;
            }
          }
        }
      }
    }

    return e.isConsumed();
  }