AppChatMessageList class final

Lista rolável de mensagens — o "chão" da conversa.

Encapsula três comportamentos chatos de acertar à mão: (1) gruda no fim (quando há poucas mensagens, elas ficam ancoradas na base, não no topo); (2) auto-scroll para o fim quando chega mensagem nova; (3) espaçamento uniforme entre os itens.

É agnóstica de domínio: não agrupa por autor nem insere divisores de dia (não conhece as mensagens). O consumidor expressa isso no itemBuilder — escolhendo, item a item, uma AppChatBubble (com tail/agrupamento) ou um AppChatDayDivider.

AppChatMessageList(
  itemCount: messages.length,
  itemBuilder: (context, i) => _buildRow(messages[i]),
)
Inheritance

Constructors

AppChatMessageList({required int itemCount, required IndexedWidgetBuilder itemBuilder, ScrollController? controller, double spacing = AppSpacings.s16, EdgeInsetsGeometry padding = EdgeInsets.zero, bool stickToBottom = true, bool autoScroll = true, Key? key})
Cria uma AppChatMessageList.
const

Properties

autoScroll → bool
Se rola para o fim ao aumentar itemCount.
final
controller → ScrollController?
Controlador de scroll externo (opcional). null = a lista cria o seu.
final
hashCode → int
The hash code for this object.
no setterinherited
itemBuilder → IndexedWidgetBuilder
Constrói o item de índice i (uma bolha, divisor, etc.).
final
itemCount → int
Quantidade de itens.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
padding → EdgeInsetsGeometry
Espaço em volta do conteúdo.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
spacing → double
Espaço vertical entre itens. Default AppSpacings.s16.
final
stickToBottom → bool
Se ancora o conteúdo na base quando ele é menor que a viewport.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<AppChatMessageList>
Creates the mutable state for this widget at a given location in the tree.
override
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
inherited
toString({DiagnosticLevel minLevel = DiagnosticLevel.info}) → String
A string representation of this object.
inherited
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String
Returns a string representation of this node and its descendants.
inherited
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String
Returns a one-line detailed description of the object.
inherited
toStringShort() → String
A short, textual description of this widget.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited