/**
   * Resets the rollover state of all rollover components in the current cell except the component
   * given as a parameter.
   *
   * @param excludeComponent the component to exclude from the reset
   */
  public void resetRolloverState(Component excludeComponent) {
    if (!chatButton.equals(excludeComponent)) chatButton.getModel().setRollover(false);

    if (!callButton.equals(excludeComponent)) callButton.getModel().setRollover(false);

    if (!callVideoButton.equals(excludeComponent)) callVideoButton.getModel().setRollover(false);

    if (!desktopSharingButton.equals(excludeComponent))
      desktopSharingButton.getModel().setRollover(false);

    if (!addContactButton.equals(excludeComponent)) addContactButton.getModel().setRollover(false);

    if (customActionButtons != null) {
      Iterator<JButton> buttonsIter = customActionButtons.iterator();
      while (buttonsIter.hasNext()) {
        JButton button = buttonsIter.next();

        if (!button.equals(excludeComponent)) button.getModel().setRollover(false);
      }
    }

    if (customActionButtonsUIGroup != null) {
      Iterator<JButton> buttonsIter = customActionButtonsUIGroup.iterator();
      while (buttonsIter.hasNext()) {
        JButton button = buttonsIter.next();

        if (!button.equals(excludeComponent)) button.getModel().setRollover(false);
      }
    }
  }
  /**
   * Handles buttons action events.
   *
   * @param evt the <tt>ActionEvent</tt> that notified us
   */
  public void actionPerformed(ActionEvent evt) {
    JButton sourceButton = (JButton) evt.getSource();

    if (sourceButton.equals(openFileButton)) {
      this.openFile(downloadFile);
    } else if (sourceButton.equals(openFolderButton)) {
      try {
        File downloadDir = GuiActivator.getFileAccessService().getDefaultDownloadDirectory();

        GuiActivator.getDesktopService().open(downloadDir);
      } catch (IllegalArgumentException e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open folder.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FOLDER_DOES_NOT_EXIST"));
      } catch (NullPointerException e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open folder.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FOLDER_DOES_NOT_EXIST"));
      } catch (UnsupportedOperationException e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open folder.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FILE_OPEN_NOT_SUPPORTED"));
      } catch (SecurityException e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open folder.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FOLDER_OPEN_NO_PERMISSION"));
      } catch (IOException e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open folder.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FOLDER_OPEN_NO_APPLICATION"));
      } catch (Exception e) {
        if (logger.isDebugEnabled()) logger.debug("Unable to open file.", e);

        this.showErrorMessage(resources.getI18NString("service.gui.FOLDER_OPEN_FAILED"));
      }
    } else if (sourceButton.equals(cancelButton)) {
      if (fileTransfer != null) fileTransfer.cancel();
    }
  }