public static int getAttachmentType(SlideshowModel model) {
    if (model == null) {
      return WorkingMessage.TEXT;
    }

    int numberOfSlides = model.size();
    if (numberOfSlides > 1) {
      return WorkingMessage.SLIDESHOW;
    } else if (numberOfSlides == 1) {
      // Only one slide in the slide-show.
      SlideModel slide = model.get(0);
      if (slide.hasVideo()) {
        return WorkingMessage.VIDEO;
      }

      if (slide.hasAudio() && slide.hasImage()) {
        return WorkingMessage.SLIDESHOW;
      }

      if (slide.hasAudio()) {
        return WorkingMessage.AUDIO;
      }

      if (slide.hasImage()) {
        return WorkingMessage.IMAGE;
      }

      if (slide.hasText()) {
        return WorkingMessage.TEXT;
      }
    }

    return WorkingMessage.TEXT;
  }
  public static void viewSimpleSlideshow(Context context, SlideshowModel slideshow) {
    if (!slideshow.isSimple()) {
      throw new IllegalArgumentException("viewSimpleSlideshow() called on a non-simple slideshow");
    }
    SlideModel slide = slideshow.get(0);
    MediaModel mm = null;
    if (slide.hasImage()) {
      mm = slide.getImage();
    } else if (slide.hasVideo()) {
      mm = slide.getVideo();
    }

    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
    intent.putExtra("SingleItemOnly", true); // So we don't see "surrounding" images in Gallery

    String contentType;
    if (mm.isDrmProtected()) {
      contentType = mm.getDrmObject().getContentType();
    } else {
      contentType = mm.getContentType();
    }
    intent.setDataAndType(mm.getUri(), contentType);
    context.startActivity(intent);
  }
  /**
   * Determines whether this is a "simple" slideshow. Criteria: - Exactly one slide - Exactly one
   * multimedia attachment, but no audio - It can optionally have a caption
   */
  public boolean isSimple() {
    // There must be one (and only one) slide.
    if (size() != 1) return false;

    SlideModel slide = get(0);
    // The slide must have either an image or video, but not both.
    if (!(slide.hasImage() ^ slide.hasVideo())) return false;

    // No audio allowed.
    if (slide.hasAudio()) return false;

    return true;
  }
  @Override
  public boolean onPrepareOptionsMenu(Menu menu) {
    if (isFinishing()) {
      return false;
    }
    menu.clear();

    SlideModel slide = mSlideshowModel.get(mPosition);

    if (slide == null) {
      return false;
    }

    // Preview slideshow.
    menu.add(0, MENU_PREVIEW_SLIDESHOW, 0, R.string.preview_slideshow)
        .setIcon(com.android.internal.R.drawable.ic_menu_play_clip);

    // Text
    if (slide.hasText() && !TextUtils.isEmpty(slide.getText().getText())) {
      // "Change text" if text is set.
      menu.add(0, MENU_REMOVE_TEXT, 0, R.string.remove_text)
          .setIcon(R.drawable.ic_menu_remove_text);
    }

    // Picture
    if (slide.hasImage()) {
      menu.add(0, MENU_DEL_PICTURE, 0, R.string.remove_picture)
          .setIcon(R.drawable.ic_menu_remove_picture);
    } else if (!slide.hasVideo()) {
      menu.add(0, MENU_ADD_PICTURE, 0, R.string.add_picture).setIcon(R.drawable.ic_menu_picture);
      menu.add(0, MENU_TAKE_PICTURE, 0, R.string.attach_take_photo)
          .setIcon(R.drawable.ic_menu_picture);
    }

    // Music
    if (slide.hasAudio()) {
      menu.add(0, MENU_DEL_AUDIO, 0, R.string.remove_music)
          .setIcon(R.drawable.ic_menu_remove_sound);
    } else if (!slide.hasVideo()) {
      if (MmsConfig.getAllowAttachAudio()) {
        SubMenu subMenu =
            menu.addSubMenu(0, MENU_SUB_AUDIO, 0, R.string.add_music)
                .setIcon(R.drawable.ic_menu_add_sound);
        subMenu.add(0, MENU_ADD_AUDIO, 0, R.string.attach_sound);
        subMenu.add(0, MENU_RECORD_SOUND, 0, R.string.attach_record_sound);
      } else {
        menu.add(0, MENU_RECORD_SOUND, 0, R.string.attach_record_sound)
            .setIcon(R.drawable.ic_menu_add_sound);
      }
    }

    // Video
    if (slide.hasVideo()) {
      menu.add(0, MENU_DEL_VIDEO, 0, R.string.remove_video)
          .setIcon(R.drawable.ic_menu_remove_video);
    } else if (!slide.hasAudio() && !slide.hasImage()) {
      menu.add(0, MENU_ADD_VIDEO, 0, R.string.add_video).setIcon(R.drawable.ic_menu_movie);
      menu.add(0, MENU_TAKE_VIDEO, 0, R.string.attach_record_video)
          .setIcon(R.drawable.ic_menu_movie);
    }

    // Add slide
    menu.add(0, MENU_ADD_SLIDE, 0, R.string.add_slide).setIcon(R.drawable.ic_menu_add_slide);

    // Slide duration
    String duration = getResources().getString(R.string.duration_sec);
    menu.add(
            0, MENU_DURATION, 0, duration.replace("%s", String.valueOf(slide.getDuration() / 1000)))
        .setIcon(R.drawable.ic_menu_duration);

    // Slide layout
    int resId;
    if (mSlideshowModel.getLayout().getLayoutType() == LayoutModel.LAYOUT_TOP_TEXT) {
      resId = R.string.layout_top;
    } else {
      resId = R.string.layout_bottom;
    }
    // FIXME: set correct icon when layout icon is available.
    menu.add(0, MENU_LAYOUT, 0, resId).setIcon(R.drawable.ic_menu_picture);
    return true;
  }
  private void bindCommonMessage() {
    if (mDownloadButton != null) {
      mDownloadButton.setVisibility(View.GONE);
      mDownloadingLabel.setVisibility(View.GONE);
    }
    // Since the message text should be concatenated with the sender's
    // address(or name), I have to display it here instead of
    // displaying it by the Presenter.
    mBodyTextView.setTransformationMethod(HideReturnsTransformationMethod.getInstance());

    boolean isSelf = Sms.isOutgoingFolder(mMessageItem.mBoxId);
    String addr = isSelf ? null : mMessageItem.mAddress;
    updateAvatarView(addr, isSelf);

    // Get and/or lazily set the formatted message from/on the
    // MessageItem.  Because the MessageItem instances come from a
    // cache (currently of size ~50), the hit rate on avoiding the
    // expensive formatMessage() call is very high.
    CharSequence formattedMessage = mMessageItem.getCachedFormattedMessage();
    if (formattedMessage == null) {
      formattedMessage =
          formatMessage(
              mMessageItem,
              mMessageItem.mContact,
              mMessageItem.mBody,
              mMessageItem.mSubject,
              mMessageItem.mHighlight,
              mMessageItem.mTextContentType);
      mMessageItem.setCachedFormattedMessage(formattedMessage);
    }
    mBodyTextView.setText(formattedMessage);

    // Debugging code to put the URI of the image attachment in the body of the list item.
    if (DEBUG) {
      String debugText = null;
      if (mMessageItem.mSlideshow == null) {
        debugText = "NULL slideshow";
      } else {
        SlideModel slide = ((SlideshowModel) mMessageItem.mSlideshow).get(0);
        if (slide == null) {
          debugText = "NULL first slide";
        } else if (!slide.hasImage()) {
          debugText = "Not an image";
        } else {
          debugText = slide.getImage().getUri().toString();
        }
      }
      mBodyTextView.setText(mPosition + ": " + debugText);
    }

    // If we're in the process of sending a message (i.e. pending), then we show a "SENDING..."
    // string in place of the timestamp.
    mDateView.setText(
        mMessageItem.isSending()
            ? mContext.getResources().getString(R.string.sending_message)
            : mMessageItem.mTimestamp);

    if (mMessageItem.isSms()) {
      showMmsView(false);
      mMessageItem.setOnPduLoaded(null);
    } else {
      if (DEBUG) {
        Log.v(
            TAG,
            "bindCommonMessage for item: "
                + mPosition
                + " "
                + mMessageItem.toString()
                + " mMessageItem.mAttachmentType: "
                + mMessageItem.mAttachmentType);
      }
      if (mMessageItem.mAttachmentType != WorkingMessage.TEXT) {
        setImage(null, null);
        setOnClickListener(mMessageItem);
        drawPlaybackButton(mMessageItem);
      } else {
        showMmsView(false);
      }
      if (mMessageItem.mSlideshow == null) {
        mMessageItem.setOnPduLoaded(
            new MessageItem.PduLoadedCallback() {
              public void onPduLoaded(MessageItem messageItem) {
                if (DEBUG) {
                  Log.v(
                      TAG,
                      "PduLoadedCallback in MessageListItem for item: "
                          + mPosition
                          + " "
                          + (mMessageItem == null ? "NULL" : mMessageItem.toString())
                          + " passed in item: "
                          + (messageItem == null ? "NULL" : messageItem.toString()));
                }
                if (messageItem != null
                    && mMessageItem != null
                    && messageItem.getMessageId() == mMessageItem.getMessageId()) {
                  mMessageItem.setCachedFormattedMessage(null);
                  bindCommonMessage();
                }
              }
            });
      } else {
        if (mPresenter == null) {
          mPresenter =
              PresenterFactory.getPresenter(
                  "MmsThumbnailPresenter", mContext, this, mMessageItem.mSlideshow);
        } else {
          mPresenter.setModel(mMessageItem.mSlideshow);
          mPresenter.setView(this);
        }
        if (mImageLoadedCallback == null) {
          mImageLoadedCallback = new ImageLoadedCallback(this);
        } else {
          mImageLoadedCallback.reset(this);
        }
        mPresenter.present(mImageLoadedCallback);
      }
    }
    drawRightStatusIndicator(mMessageItem);

    requestLayout();
  }