Example #1
0
  /** Initializes and constructs this panel. */
  private void init() {
    this.phoneNumberCombo.setEditable(true);

    this.callViaPanel.add(callViaLabel);
    this.callViaPanel.add(accountSelectorBox);

    this.comboPanel.add(phoneNumberCombo, BorderLayout.CENTER);

    this.callButton.setName("call");
    this.hangupButton.setName("hangup");
    this.minimizeButton.setName("minimize");
    this.restoreButton.setName("restore");

    this.minimizeButton.setToolTipText(
        Messages.getI18NString("hideCallPanel").getText() + " Ctrl - H");
    this.restoreButton.setToolTipText(
        Messages.getI18NString("showCallPanel").getText() + " Ctrl - H");

    this.callButton.addActionListener(this);
    this.hangupButton.addActionListener(this);
    this.minimizeButton.addActionListener(this);
    this.restoreButton.addActionListener(this);

    this.buttonsPanel.add(callButton);
    this.buttonsPanel.add(hangupButton);

    this.callButton.setEnabled(false);

    this.hangupButton.setEnabled(false);

    this.add(minimizeButtonPanel, BorderLayout.SOUTH);

    this.setCallPanelVisible(ConfigurationManager.isCallPanelShown());
  }
Example #2
0
/**
 * The <tt>CallManager</tt> is the one that handles calls. It contains also the "Call" and "Hangup"
 * buttons panel. Here are handles incoming and outgoing calls from and to the call operation set.
 *
 * @author Yana Stamcheva
 */
public class CallManager extends JPanel
    implements ActionListener, CallListener, ListSelectionListener, ChangeListener {
  private Logger logger = Logger.getLogger(CallManager.class.getName());

  private CallComboBox phoneNumberCombo;

  private JPanel comboPanel = new JPanel(new BorderLayout());

  private JPanel buttonsPanel = new JPanel(new FlowLayout(FlowLayout.CENTER, 10, 0));

  private JLabel callViaLabel = new JLabel(Messages.getI18NString("callVia").getText() + " ");

  private JPanel callViaPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT, 0, 4));

  private AccountSelectorBox accountSelectorBox;

  private SIPCommButton callButton =
      new SIPCommButton(
          ImageLoader.getImage(ImageLoader.CALL_BUTTON_BG),
          ImageLoader.getImage(ImageLoader.CALL_ROLLOVER_BUTTON_BG),
          null,
          ImageLoader.getImage(ImageLoader.CALL_BUTTON_PRESSED_BG));

  private SIPCommButton hangupButton =
      new SIPCommButton(
          ImageLoader.getImage(ImageLoader.HANGUP_BUTTON_BG),
          ImageLoader.getImage(ImageLoader.HANGUP_ROLLOVER_BUTTON_BG),
          null,
          ImageLoader.getImage(ImageLoader.HANGUP_BUTTON_PRESSED_BG));

  private SIPCommButton minimizeButton =
      new SIPCommButton(
          ImageLoader.getImage(ImageLoader.CALL_PANEL_MINIMIZE_BUTTON),
          ImageLoader.getImage(ImageLoader.CALL_PANEL_MINIMIZE_ROLLOVER_BUTTON));

  private SIPCommButton restoreButton =
      new SIPCommButton(
          ImageLoader.getImage(ImageLoader.CALL_PANEL_RESTORE_BUTTON),
          ImageLoader.getImage(ImageLoader.CALL_PANEL_RESTORE_ROLLOVER_BUTTON));

  private JPanel minimizeButtonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));

  private MainFrame mainFrame;

  private Hashtable activeCalls = new Hashtable();

  private boolean isCallMetaContact;

  private Hashtable removeCallTimers = new Hashtable();

  private ProtocolProviderService selectedCallProvider;

  /**
   * Creates an instance of <tt>CallManager</tt>.
   *
   * @param mainFrame The main application window.
   */
  public CallManager(MainFrame mainFrame) {
    super(new BorderLayout());

    this.mainFrame = mainFrame;

    this.phoneNumberCombo = new CallComboBox(this);

    this.accountSelectorBox = new AccountSelectorBox(this);

    this.buttonsPanel.setBorder(BorderFactory.createEmptyBorder(5, 0, 0, 0));

    this.comboPanel.setBorder(BorderFactory.createEmptyBorder(10, 5, 0, 5));

    this.init();
  }

  /** Initializes and constructs this panel. */
  private void init() {
    this.phoneNumberCombo.setEditable(true);

    this.callViaPanel.add(callViaLabel);
    this.callViaPanel.add(accountSelectorBox);

    this.comboPanel.add(phoneNumberCombo, BorderLayout.CENTER);

    this.callButton.setName("call");
    this.hangupButton.setName("hangup");
    this.minimizeButton.setName("minimize");
    this.restoreButton.setName("restore");

    this.minimizeButton.setToolTipText(
        Messages.getI18NString("hideCallPanel").getText() + " Ctrl - H");
    this.restoreButton.setToolTipText(
        Messages.getI18NString("showCallPanel").getText() + " Ctrl - H");

    this.callButton.addActionListener(this);
    this.hangupButton.addActionListener(this);
    this.minimizeButton.addActionListener(this);
    this.restoreButton.addActionListener(this);

    this.buttonsPanel.add(callButton);
    this.buttonsPanel.add(hangupButton);

    this.callButton.setEnabled(false);

    this.hangupButton.setEnabled(false);

    this.add(minimizeButtonPanel, BorderLayout.SOUTH);

    this.setCallPanelVisible(ConfigurationManager.isCallPanelShown());
  }

  /**
   * Handles the <tt>ActionEvent</tt> generated when user presses one of the buttons in this panel.
   */
  public void actionPerformed(ActionEvent evt) {
    JButton button = (JButton) evt.getSource();
    String buttonName = button.getName();

    if (buttonName.equals("call")) {
      Component selectedPanel = mainFrame.getSelectedTab();

      // call button is pressed over an already open call panel
      if (selectedPanel != null
          && selectedPanel instanceof CallPanel
          && ((CallPanel) selectedPanel).getCall().getCallState()
              == CallState.CALL_INITIALIZATION) {

        NotificationManager.stopSound(NotificationManager.BUSY_CALL);
        NotificationManager.stopSound(NotificationManager.INCOMING_CALL);

        CallPanel callPanel = (CallPanel) selectedPanel;

        Iterator participantPanels = callPanel.getParticipantsPanels();

        while (participantPanels.hasNext()) {
          CallParticipantPanel panel = (CallParticipantPanel) participantPanels.next();

          panel.setState("Connecting");
        }

        Call call = callPanel.getCall();

        answerCall(call);
      }
      // call button is pressed over the call list
      else if (selectedPanel != null
          && selectedPanel instanceof CallListPanel
          && ((CallListPanel) selectedPanel).getCallList().getSelectedIndex() != -1) {

        CallListPanel callListPanel = (CallListPanel) selectedPanel;

        GuiCallParticipantRecord callRecord =
            (GuiCallParticipantRecord) callListPanel.getCallList().getSelectedValue();

        String stringContact = callRecord.getParticipantName();

        createCall(stringContact);
      }
      // call button is pressed over the contact list
      else if (selectedPanel != null && selectedPanel instanceof ContactListPanel) {
        // call button is pressed when a meta contact is selected
        if (isCallMetaContact) {
          Object[] selectedContacts =
              mainFrame.getContactListPanel().getContactList().getSelectedValues();

          Vector telephonyContacts = new Vector();

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

            Object o = selectedContacts[i];

            if (o instanceof MetaContact) {

              Contact contact =
                  ((MetaContact) o).getDefaultContact(OperationSetBasicTelephony.class);

              if (contact != null) telephonyContacts.add(contact);
              else {
                new ErrorDialog(
                        this.mainFrame,
                        Messages.getI18NString("warning").getText(),
                        Messages.getI18NString(
                                "contactNotSupportingTelephony",
                                new String[] {((MetaContact) o).getDisplayName()})
                            .getText())
                    .showDialog();
              }
            }
          }

          if (telephonyContacts.size() > 0) createCall(telephonyContacts);

        } else if (!phoneNumberCombo.isComboFieldEmpty()) {

          // if no contact is selected checks if the user has chosen
          // or has
          // writen something in the phone combo box

          String stringContact = phoneNumberCombo.getEditor().getItem().toString();

          createCall(stringContact);
        }
      } else if (selectedPanel != null && selectedPanel instanceof DialPanel) {
        String stringContact = phoneNumberCombo.getEditor().getItem().toString();
        createCall(stringContact);
      }
    } else if (buttonName.equalsIgnoreCase("hangup")) {
      Component selectedPanel = this.mainFrame.getSelectedTab();

      if (selectedPanel != null && selectedPanel instanceof CallPanel) {

        NotificationManager.stopSound(NotificationManager.BUSY_CALL);
        NotificationManager.stopSound(NotificationManager.INCOMING_CALL);
        NotificationManager.stopSound(NotificationManager.OUTGOING_CALL);

        CallPanel callPanel = (CallPanel) selectedPanel;

        Call call = callPanel.getCall();

        if (removeCallTimers.containsKey(callPanel)) {
          ((Timer) removeCallTimers.get(callPanel)).stop();
          removeCallTimers.remove(callPanel);
        }

        removeCallPanel(callPanel);

        if (call != null) {
          ProtocolProviderService pps = call.getProtocolProvider();

          OperationSetBasicTelephony telephony = mainFrame.getTelephonyOpSet(pps);

          Iterator participants = call.getCallParticipants();

          while (participants.hasNext()) {
            try {
              // now we hang up the first call participant in the
              // call
              telephony.hangupCallParticipant((CallParticipant) participants.next());
            } catch (OperationFailedException e) {
              logger.error("Hang up was not successful: " + e);
            }
          }
        }
      }
    } else if (buttonName.equalsIgnoreCase("minimize")) {
      JCheckBoxMenuItem hideCallPanelItem =
          mainFrame.getMainMenu().getViewMenu().getHideCallPanelItem();

      if (!hideCallPanelItem.isSelected()) hideCallPanelItem.setSelected(true);

      this.setCallPanelVisible(false);
    } else if (buttonName.equalsIgnoreCase("restore")) {

      JCheckBoxMenuItem hideCallPanelItem =
          mainFrame.getMainMenu().getViewMenu().getHideCallPanelItem();

      if (hideCallPanelItem.isSelected()) hideCallPanelItem.setSelected(false);

      this.setCallPanelVisible(true);
    }
  }

  /** Hides the panel containing call and hangup buttons. */
  public void setCallPanelVisible(boolean isVisible) {
    if (isVisible) {
      this.add(comboPanel, BorderLayout.NORTH);
      this.add(buttonsPanel, BorderLayout.CENTER);

      this.minimizeButtonPanel.removeAll();
      this.minimizeButtonPanel.add(minimizeButton);
    } else {
      this.remove(comboPanel);
      this.remove(buttonsPanel);

      this.minimizeButtonPanel.removeAll();
      this.minimizeButtonPanel.add(restoreButton);

      if (mainFrame.isVisible())
        this.mainFrame.getContactListPanel().getContactList().requestFocus();
    }

    if (ConfigurationManager.isCallPanelShown() != isVisible)
      ConfigurationManager.setShowCallPanel(isVisible);

    this.mainFrame.validate();
  }

  /**
   * Adds the given call account to the list of call via accounts.
   *
   * @param pps the protocol provider service corresponding to the account
   */
  public void addCallAccount(ProtocolProviderService pps) {
    if (accountSelectorBox.getAccountsNumber() > 0) {
      this.comboPanel.add(callViaPanel, BorderLayout.SOUTH);
    }
    accountSelectorBox.addAccount(pps);
  }

  /**
   * Removes the account corresponding to the given protocol provider from the call via selector
   * box.
   *
   * @param pps the protocol provider service to remove
   */
  public void removeCallAccount(ProtocolProviderService pps) {
    this.accountSelectorBox.removeAccount(pps);

    if (accountSelectorBox.getAccountsNumber() < 2) {
      this.comboPanel.remove(callViaPanel);
    }
  }

  /**
   * Returns TRUE if the account corresponding to the given protocol provider is already contained
   * in the call via selector box, otherwise returns FALSE.
   *
   * @param pps the protocol provider service for the account
   * @return TRUE if the account corresponding to the given protocol provider is already contained
   *     in the call via selector box, otherwise returns FALSE
   */
  public boolean containsCallAccount(ProtocolProviderService pps) {
    return accountSelectorBox.containsAccount(pps);
  }

  /**
   * Updates the call via account status.
   *
   * @param pps the protocol provider service for the account
   */
  public void updateCallAccountStatus(ProtocolProviderService pps) {
    accountSelectorBox.updateAccountStatus(pps);
  }

  /**
   * Returns the account selector box.
   *
   * @return the account selector box.
   */
  public AccountSelectorBox getAccountSelectorBox() {
    return accountSelectorBox;
  }

  /**
   * Sets the protocol provider to use for a call.
   *
   * @param provider the protocol provider to use for a call.
   */
  public void setCallProvider(ProtocolProviderService provider) {
    this.selectedCallProvider = provider;
  }

  /**
   * Implements CallListener.incomingCallReceived. When a call is received creates a call panel and
   * adds it to the main tabbed pane and plays the ring phone sound to the user.
   */
  public void incomingCallReceived(CallEvent event) {
    Call sourceCall = event.getSourceCall();

    CallPanel callPanel = new CallPanel(this, sourceCall, GuiCallParticipantRecord.INCOMING_CALL);

    mainFrame.addCallPanel(callPanel);

    if (mainFrame.getState() == JFrame.ICONIFIED) mainFrame.setState(JFrame.NORMAL);

    if (!mainFrame.isVisible()) mainFrame.setVisible(true);

    mainFrame.toFront();

    this.callButton.setEnabled(true);
    this.hangupButton.setEnabled(true);

    NotificationManager.fireNotification(
        NotificationManager.INCOMING_CALL,
        null,
        "Incoming call recived from: " + sourceCall.getCallParticipants().next());

    activeCalls.put(sourceCall, callPanel);

    this.setCallPanelVisible(true);
  }

  /**
   * Implements CallListener.callEnded. Stops sounds that are playing at the moment if there're any.
   * Removes the call panel and disables the hangup button.
   */
  public void callEnded(CallEvent event) {
    Call sourceCall = event.getSourceCall();

    NotificationManager.stopSound(NotificationManager.BUSY_CALL);
    NotificationManager.stopSound(NotificationManager.INCOMING_CALL);
    NotificationManager.stopSound(NotificationManager.OUTGOING_CALL);

    if (activeCalls.get(sourceCall) != null) {
      CallPanel callPanel = (CallPanel) activeCalls.get(sourceCall);

      this.removeCallPanelWait(callPanel);
    }
  }

  public void outgoingCallCreated(CallEvent event) {}

  /**
   * Removes the given call panel tab.
   *
   * @param callPanel the CallPanel to remove
   */
  public void removeCallPanelWait(CallPanel callPanel) {
    Timer timer = new Timer(5000, new RemoveCallPanelListener(callPanel));

    this.removeCallTimers.put(callPanel, timer);

    timer.setRepeats(false);
    timer.start();
  }

  /**
   * Removes the given call panel tab.
   *
   * @param callPanel the CallPanel to remove
   */
  private void removeCallPanel(CallPanel callPanel) {
    if (callPanel.getCall() != null && activeCalls.contains(callPanel.getCall())) {
      this.activeCalls.remove(callPanel.getCall());
    }

    mainFrame.removeCallPanel(callPanel);
    updateButtonsStateAccordingToSelectedPanel();
  }

  /** Removes the given CallPanel from the main tabbed pane. */
  private class RemoveCallPanelListener implements ActionListener {
    private CallPanel callPanel;

    public RemoveCallPanelListener(CallPanel callPanel) {
      this.callPanel = callPanel;
    }

    public void actionPerformed(ActionEvent e) {
      removeCallPanel(callPanel);
    }
  }

  /**
   * Implements ListSelectionListener.valueChanged. Enables or disables call and hangup buttons
   * depending on the selection in the contactlist.
   */
  public void valueChanged(ListSelectionEvent e) {
    Object o = mainFrame.getContactListPanel().getContactList().getSelectedValue();

    if ((e.getFirstIndex() != -1 || e.getLastIndex() != -1) && (o instanceof MetaContact)) {
      setCallMetaContact(true);

      // Switch automatically to the appropriate pps in account selector
      // box and enable callButton if telephony is supported.
      Contact contact = ((MetaContact) o).getDefaultContact(OperationSetBasicTelephony.class);

      if (contact != null) {
        callButton.setEnabled(true);

        if (contact.getProtocolProvider().isRegistered())
          getAccountSelectorBox().setSelected(contact.getProtocolProvider());
      } else {
        callButton.setEnabled(false);
      }
    } else if (phoneNumberCombo.isComboFieldEmpty()) {
      callButton.setEnabled(false);
    }
  }

  /**
   * Implements ChangeListener.stateChanged. Enables the hangup button if ones selects a tab in the
   * main tabbed pane that contains a call panel.
   */
  public void stateChanged(ChangeEvent e) {
    this.updateButtonsStateAccordingToSelectedPanel();

    Component selectedPanel = mainFrame.getSelectedTab();
    if (selectedPanel == null || !(selectedPanel instanceof CallPanel)) {
      Iterator callPanels = activeCalls.values().iterator();

      while (callPanels.hasNext()) {
        CallPanel callPanel = (CallPanel) callPanels.next();

        callPanel.removeDialogs();
      }
    }
  }

  /** Updates call and hangup buttons' states aa */
  private void updateButtonsStateAccordingToSelectedPanel() {
    Component selectedPanel = mainFrame.getSelectedTab();
    if (selectedPanel != null && selectedPanel instanceof CallPanel) {
      this.hangupButton.setEnabled(true);
    } else {
      this.hangupButton.setEnabled(false);
    }
  }

  /**
   * Returns the call button.
   *
   * @return the call button
   */
  public SIPCommButton getCallButton() {
    return callButton;
  }

  /**
   * Returns the hangup button.
   *
   * @return the hangup button
   */
  public SIPCommButton getHangupButton() {
    return hangupButton;
  }

  /**
   * Returns the main application frame. Meant to be used from the contained components that do not
   * have direct access to the MainFrame.
   *
   * @return the main application frame
   */
  public MainFrame getMainFrame() {
    return mainFrame;
  }

  /**
   * Returns the combo box, where user enters the phone number to call to.
   *
   * @return the combo box, where user enters the phone number to call to.
   */
  public JComboBox getCallComboBox() {
    return phoneNumberCombo;
  }

  /**
   * Answers the given call.
   *
   * @param call the call to answer
   */
  public void answerCall(Call call) {
    new AnswerCallThread(call).start();
  }

  /**
   * Returns TRUE if this call is a call to an internal meta contact from the contact list,
   * otherwise returns FALSE.
   *
   * @return TRUE if this call is a call to an internal meta contact from the contact list,
   *     otherwise returns FALSE
   */
  public boolean isCallMetaContact() {
    return isCallMetaContact;
  }

  /**
   * Sets the isCallMetaContact variable to TRUE or FALSE. This defines if this call is a call to a
   * given meta contact selected from the contact list or a call to an external contact or phone
   * number.
   *
   * @param isCallMetaContact TRUE to define this call as a call to an internal meta contact and
   *     FALSE to define it as a call to an external contact or phone number.
   */
  public void setCallMetaContact(boolean isCallMetaContact) {
    this.isCallMetaContact = isCallMetaContact;
  }

  /**
   * Creates a call to the contact represented by the given string.
   *
   * @param contact the contact to call to
   */
  public void createCall(String contact) {
    CallPanel callPanel = new CallPanel(this, contact);

    mainFrame.addCallPanel(callPanel);

    new CreateCallThread(contact, callPanel).start();
  }

  /**
   * Creates a call to the given list of contacts.
   *
   * @param contacts the list of contacts to call to
   */
  public void createCall(Vector contacts) {
    CallPanel callPanel = new CallPanel(this, contacts);

    mainFrame.addCallPanel(callPanel);

    new CreateCallThread(contacts, callPanel).start();
  }

  /** Creates a call from a given Contact or a given String. */
  private class CreateCallThread extends Thread {
    Vector contacts;

    CallPanel callPanel;

    String stringContact;

    OperationSetBasicTelephony telephony;

    public CreateCallThread(String contact, CallPanel callPanel) {
      this.stringContact = contact;
      this.callPanel = callPanel;

      if (selectedCallProvider != null)
        telephony = mainFrame.getTelephonyOpSet(selectedCallProvider);
    }

    public CreateCallThread(Vector contacts, CallPanel callPanel) {
      this.contacts = contacts;
      this.callPanel = callPanel;

      if (selectedCallProvider != null)
        telephony = mainFrame.getTelephonyOpSet(selectedCallProvider);
    }

    public void run() {
      if (telephony == null) return;

      Call createdCall = null;

      if (contacts != null) {
        Contact contact = (Contact) contacts.get(0);

        // NOTE: The multi user call is not yet implemented!
        // We just get the first contact and create a call for him.
        try {
          createdCall = telephony.createCall(contact);
        } catch (OperationFailedException e) {
          logger.error("The call could not be created: " + e);

          callPanel.getParticipantPanel(contact.getDisplayName()).setState(e.getMessage());

          removeCallPanelWait(callPanel);
        }

        // If the call is successfully created we set the created
        // Call instance to the already existing CallPanel and we
        // add this call to the active calls.
        if (createdCall != null) {
          callPanel.setCall(createdCall, GuiCallParticipantRecord.OUTGOING_CALL);

          activeCalls.put(createdCall, callPanel);
        }
      } else {
        try {
          createdCall = telephony.createCall(stringContact);
        } catch (ParseException e) {
          logger.error("The call could not be created: " + e);

          callPanel.getParticipantPanel(stringContact).setState(e.getMessage());

          removeCallPanelWait(callPanel);
        } catch (OperationFailedException e) {
          logger.error("The call could not be created: " + e);

          callPanel.getParticipantPanel(stringContact).setState(e.getMessage());

          removeCallPanelWait(callPanel);
        }

        // If the call is successfully created we set the created
        // Call instance to the already existing CallPanel and we
        // add this call to the active calls.
        if (createdCall != null) {
          callPanel.setCall(createdCall, GuiCallParticipantRecord.OUTGOING_CALL);

          activeCalls.put(createdCall, callPanel);
        }
      }
    }
  }

  /** Answers all call participants in the given call. */
  private class AnswerCallThread extends Thread {
    private Call call;

    public AnswerCallThread(Call call) {
      this.call = call;
    }

    public void run() {
      ProtocolProviderService pps = call.getProtocolProvider();

      Iterator participants = call.getCallParticipants();

      while (participants.hasNext()) {
        CallParticipant participant = (CallParticipant) participants.next();

        OperationSetBasicTelephony telephony = mainFrame.getTelephonyOpSet(pps);

        try {
          telephony.answerCallParticipant(participant);
        } catch (OperationFailedException e) {
          logger.error(
              "Could not answer to : " + participant + " caused by the following exception: " + e);
        }
      }
    }
  }
}
Example #3
0
  /**
   * Handles the <tt>ActionEvent</tt> generated when user presses one of the buttons in this panel.
   */
  public void actionPerformed(ActionEvent evt) {
    JButton button = (JButton) evt.getSource();
    String buttonName = button.getName();

    if (buttonName.equals("call")) {
      Component selectedPanel = mainFrame.getSelectedTab();

      // call button is pressed over an already open call panel
      if (selectedPanel != null
          && selectedPanel instanceof CallPanel
          && ((CallPanel) selectedPanel).getCall().getCallState()
              == CallState.CALL_INITIALIZATION) {

        NotificationManager.stopSound(NotificationManager.BUSY_CALL);
        NotificationManager.stopSound(NotificationManager.INCOMING_CALL);

        CallPanel callPanel = (CallPanel) selectedPanel;

        Iterator participantPanels = callPanel.getParticipantsPanels();

        while (participantPanels.hasNext()) {
          CallParticipantPanel panel = (CallParticipantPanel) participantPanels.next();

          panel.setState("Connecting");
        }

        Call call = callPanel.getCall();

        answerCall(call);
      }
      // call button is pressed over the call list
      else if (selectedPanel != null
          && selectedPanel instanceof CallListPanel
          && ((CallListPanel) selectedPanel).getCallList().getSelectedIndex() != -1) {

        CallListPanel callListPanel = (CallListPanel) selectedPanel;

        GuiCallParticipantRecord callRecord =
            (GuiCallParticipantRecord) callListPanel.getCallList().getSelectedValue();

        String stringContact = callRecord.getParticipantName();

        createCall(stringContact);
      }
      // call button is pressed over the contact list
      else if (selectedPanel != null && selectedPanel instanceof ContactListPanel) {
        // call button is pressed when a meta contact is selected
        if (isCallMetaContact) {
          Object[] selectedContacts =
              mainFrame.getContactListPanel().getContactList().getSelectedValues();

          Vector telephonyContacts = new Vector();

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

            Object o = selectedContacts[i];

            if (o instanceof MetaContact) {

              Contact contact =
                  ((MetaContact) o).getDefaultContact(OperationSetBasicTelephony.class);

              if (contact != null) telephonyContacts.add(contact);
              else {
                new ErrorDialog(
                        this.mainFrame,
                        Messages.getI18NString("warning").getText(),
                        Messages.getI18NString(
                                "contactNotSupportingTelephony",
                                new String[] {((MetaContact) o).getDisplayName()})
                            .getText())
                    .showDialog();
              }
            }
          }

          if (telephonyContacts.size() > 0) createCall(telephonyContacts);

        } else if (!phoneNumberCombo.isComboFieldEmpty()) {

          // if no contact is selected checks if the user has chosen
          // or has
          // writen something in the phone combo box

          String stringContact = phoneNumberCombo.getEditor().getItem().toString();

          createCall(stringContact);
        }
      } else if (selectedPanel != null && selectedPanel instanceof DialPanel) {
        String stringContact = phoneNumberCombo.getEditor().getItem().toString();
        createCall(stringContact);
      }
    } else if (buttonName.equalsIgnoreCase("hangup")) {
      Component selectedPanel = this.mainFrame.getSelectedTab();

      if (selectedPanel != null && selectedPanel instanceof CallPanel) {

        NotificationManager.stopSound(NotificationManager.BUSY_CALL);
        NotificationManager.stopSound(NotificationManager.INCOMING_CALL);
        NotificationManager.stopSound(NotificationManager.OUTGOING_CALL);

        CallPanel callPanel = (CallPanel) selectedPanel;

        Call call = callPanel.getCall();

        if (removeCallTimers.containsKey(callPanel)) {
          ((Timer) removeCallTimers.get(callPanel)).stop();
          removeCallTimers.remove(callPanel);
        }

        removeCallPanel(callPanel);

        if (call != null) {
          ProtocolProviderService pps = call.getProtocolProvider();

          OperationSetBasicTelephony telephony = mainFrame.getTelephonyOpSet(pps);

          Iterator participants = call.getCallParticipants();

          while (participants.hasNext()) {
            try {
              // now we hang up the first call participant in the
              // call
              telephony.hangupCallParticipant((CallParticipant) participants.next());
            } catch (OperationFailedException e) {
              logger.error("Hang up was not successful: " + e);
            }
          }
        }
      }
    } else if (buttonName.equalsIgnoreCase("minimize")) {
      JCheckBoxMenuItem hideCallPanelItem =
          mainFrame.getMainMenu().getViewMenu().getHideCallPanelItem();

      if (!hideCallPanelItem.isSelected()) hideCallPanelItem.setSelected(true);

      this.setCallPanelVisible(false);
    } else if (buttonName.equalsIgnoreCase("restore")) {

      JCheckBoxMenuItem hideCallPanelItem =
          mainFrame.getMainMenu().getViewMenu().getHideCallPanelItem();

      if (hideCallPanelItem.isSelected()) hideCallPanelItem.setSelected(false);

      this.setCallPanelVisible(true);
    }
  }