ZenStreamQueryBuilder<T> class

A widget that builds itself based on the state of a ZenStreamQuery.

It handles the 3 main states:

  • loading: Stream is connecting and no data exists yet.
  • error: Stream emitted an error.
  • builder: Stream has emitted data (or has initial data).
Inheritance

Constructors

ZenStreamQueryBuilder({Key? key, required ZenStreamQuery<T> query, required Widget builder(BuildContext context, T data), Widget loading()?, Widget error(Object error)?, Widget empty()?, bool keepPreviousData = false})
const

Properties

builder → Widget Function(BuildContext context, T data)
final
empty → Widget Function()?
final
error → Widget Function(Object error)?
final
hashCode → int
The hash code for this object.
no setterinherited
keepPreviousData → bool
If true, keeps showing the data from the previous query instance (if available) while the new query is connecting.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
loading → Widget Function()?
final
query → ZenStreamQuery<T>
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<ZenStreamQueryBuilder<T>>
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