build method

@override Widget build(BuildContext context, Message message, Map<String, List<Attachment>> attachments)

Builds a widget for the given message and attachments. This will only be called if canHandle returns true.

Implementation

@override
Widget build(
  BuildContext context,
  Message message,
  Map<String, List<Attachment>> attachments,
) {
  assert(debugAssertCanHandle(message, attachments), '');

  final galleryAttachments = [...attachments.values.expand((it) => it)];

  return Padding(
    padding: padding,
    child: StreamGalleryAttachment(
      shape: shape,
      message: message,
      spacing: spacing,
      runSpacing: runSpacing,
      constraints: constraints,
      attachments: galleryAttachments,
      itemBuilder: (context, index) {
        final attachment = galleryAttachments[index];

        VoidCallback? onTap;
        if (onAttachmentTap != null) {
          onTap = () => onAttachmentTap!(message, attachment);
        }

        return InkWell(
          onTap: onTap,
          child: Stack(
            children: [
              StreamMediaAttachmentThumbnail(
                media: attachment,
                width: constraints.maxWidth,
                height: constraints.maxHeight,
                fit: BoxFit.cover,
              ),
              Padding(
                padding: const EdgeInsets.all(8),
                child: StreamAttachmentUploadStateBuilder(
                  message: message,
                  attachment: attachment,
                ),
              ),
            ],
          ),
        );
      },
    ),
  );
}