CometChat Flutter UIKit v6 — Customization Guide

Four tiers of customization, from lightest to deepest.

1. Four-Tier Customization Model

Tier	Mechanism	Scope	When to Use
1	Props & View Slots	Per-component UI overrides	Custom list items, subtitles, trailing widgets, headers
2	Request Builders	Data filtering & pagination	Filter conversations, users, groups, messages, group members
3	Text Formatters & Message Templates	Message rendering & actions	Custom text styling, custom long-press options, custom bubble slots
4	BubbleFactory & DataSource	New message types	Location bubbles, poll bubbles, any custom `category_type`

Start at Tier 1. Move deeper only when the lighter tier can't solve the problem.

Every list-based component exposes view slot callbacks that let you replace individual parts of each list item without rebuilding the entire widget.