/**
   * Determines whether this chat transport supports the supplied content type
   *
   * @param contentType the type we want to check
   * @return <tt>true</tt> if the chat transport supports it and <tt>false</tt> otherwise.
   */
  public boolean isContentTypeSupported(String contentType) {
    OperationSetBasicInstantMessaging imOpSet =
        contact.getProtocolProvider().getOperationSet(OperationSetBasicInstantMessaging.class);

    if (imOpSet != null) return imOpSet.isContentTypeSupported(contentType);
    else return false;
  }
  /**
   * If sending im is supported check it for supporting html messages if a font is set. As it can be
   * slow make sure its not on our way
   */
  private void checkImCaps() {
    if (ConfigurationUtils.getChatDefaultFontFamily() != null
        && ConfigurationUtils.getChatDefaultFontSize() > 0) {
      OperationSetBasicInstantMessaging imOpSet =
          contact.getProtocolProvider().getOperationSet(OperationSetBasicInstantMessaging.class);

      if (imOpSet != null)
        imOpSet.isContentTypeSupported(OperationSetBasicInstantMessaging.HTML_MIME_TYPE, contact);
    }
  }
  /**
   * Removes the instant message listener from this chat transport.
   *
   * @param l The message listener to remove.
   */
  public void removeInstantMessageListener(MessageListener l) {
    // If this chat transport does not support instant messaging we do
    // nothing here.
    if (!allowsInstantMessage()) return;

    OperationSetBasicInstantMessaging imOpSet =
        contact.getProtocolProvider().getOperationSet(OperationSetBasicInstantMessaging.class);

    imOpSet.removeMessageListener(l);
  }
  /**
   * Sends the given instant message through this chat transport, by specifying the mime type (html
   * or plain text).
   *
   * @param message The message to send.
   * @param mimeType The mime type of the message to send: text/html or text/plain.
   * @throws Exception if the send operation is interrupted
   */
  public void sendInstantMessage(String message, String mimeType) throws Exception {
    // If this chat transport does not support instant messaging we do
    // nothing here.
    if (!allowsInstantMessage()) return;

    OperationSetBasicInstantMessaging imOpSet =
        contact.getProtocolProvider().getOperationSet(OperationSetBasicInstantMessaging.class);

    Message msg;
    if (mimeType.equals(OperationSetBasicInstantMessaging.HTML_MIME_TYPE)
        && imOpSet.isContentTypeSupported(OperationSetBasicInstantMessaging.HTML_MIME_TYPE)) {
      msg =
          imOpSet.createMessage(
              message, OperationSetBasicInstantMessaging.HTML_MIME_TYPE, "utf-8", "");
    } else {
      msg = imOpSet.createMessage(message);
    }

    if (contactResource != null) imOpSet.sendInstantMessage(contact, contactResource, msg);
    else imOpSet.sendInstantMessage(contact, ContactResource.BASE_RESOURCE, msg);
  }
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  /**
   * Implements the ContactListListener.contactSelected method.
   *
   * @param evt the <tt>ContactListEvent</tt> that notified us
   */
  public void contactClicked(ContactListEvent evt) {
    // We're interested only in two click events.
    if (evt.getClickCount() < 2) return;

    UIContact descriptor = evt.getSourceContact();

    // We're currently only interested in MetaContacts.
    if (descriptor.getDescriptor() instanceof MetaContact) {
      MetaContact metaContact = (MetaContact) descriptor.getDescriptor();

      // Searching for the right proto contact to use as default for the
      // chat conversation.
      Contact defaultContact =
          metaContact.getDefaultContact(OperationSetBasicInstantMessaging.class);

      // do nothing
      if (defaultContact == null) {
        defaultContact = metaContact.getDefaultContact(OperationSetSmsMessaging.class);

        if (defaultContact == null) return;
      }

      ProtocolProviderService defaultProvider = defaultContact.getProtocolProvider();

      OperationSetBasicInstantMessaging defaultIM =
          defaultProvider.getOperationSet(OperationSetBasicInstantMessaging.class);

      ProtocolProviderService protoContactProvider;
      OperationSetBasicInstantMessaging protoContactIM;

      boolean isOfflineMessagingSupported =
          defaultIM != null && !defaultIM.isOfflineMessagingSupported();

      if (defaultContact.getPresenceStatus().getStatus() < 1
          && (!isOfflineMessagingSupported || !defaultProvider.isRegistered())) {
        Iterator<Contact> protoContacts = metaContact.getContacts();

        while (protoContacts.hasNext()) {
          Contact contact = protoContacts.next();

          protoContactProvider = contact.getProtocolProvider();

          protoContactIM =
              protoContactProvider.getOperationSet(OperationSetBasicInstantMessaging.class);

          if (protoContactIM != null
              && protoContactIM.isOfflineMessagingSupported()
              && protoContactProvider.isRegistered()) {
            defaultContact = contact;
          }
        }
      }

      ContactEventHandler contactHandler =
          mainFrame.getContactHandler(defaultContact.getProtocolProvider());

      contactHandler.contactClicked(defaultContact, evt.getClickCount());
    } else if (descriptor.getDescriptor() instanceof SourceContact) {
      SourceContact contact = (SourceContact) descriptor.getDescriptor();

      List<ContactDetail> imDetails =
          contact.getContactDetails(OperationSetBasicInstantMessaging.class);
      List<ContactDetail> mucDetails = contact.getContactDetails(OperationSetMultiUserChat.class);

      if (imDetails != null && imDetails.size() > 0) {
        ProtocolProviderService pps =
            imDetails.get(0).getPreferredProtocolProvider(OperationSetBasicInstantMessaging.class);

        GuiActivator.getUIService()
            .getChatWindowManager()
            .startChat(contact.getContactAddress(), pps);
      } else if (mucDetails != null && mucDetails.size() > 0) {
        ChatRoomWrapper room =
            GuiActivator.getMUCService().findChatRoomWrapperFromSourceContact(contact);

        if (room == null) {
          // lets check by id
          ProtocolProviderService pps =
              mucDetails.get(0).getPreferredProtocolProvider(OperationSetMultiUserChat.class);

          room =
              GuiActivator.getMUCService()
                  .findChatRoomWrapperFromChatRoomID(contact.getContactAddress(), pps);

          if (room == null) {
            GuiActivator.getMUCService()
                .createChatRoom(
                    contact.getContactAddress(),
                    pps,
                    new ArrayList<String>(),
                    "",
                    false,
                    false,
                    false);
          }
        }

        if (room != null) GuiActivator.getMUCService().openChatRoom(room);
      } else {
        List<ContactDetail> smsDetails = contact.getContactDetails(OperationSetSmsMessaging.class);

        if (smsDetails != null && smsDetails.size() > 0) {
          GuiActivator.getUIService()
              .getChatWindowManager()
              .startChat(contact.getContactAddress(), true);
        }
      }
    }
  }