TernaryContainer class

3部分组成的容器。

头部，内容，和底部。

 direction=[Axis.vertical]        direction=[Axis.horizontal]
 +---------------------+        +-------------------------+
 |+-------------------+|        |+-------+-------+-------+|
 || Header part       ||        ||Header |Content|Footer ||
 |+-------------------+|        ||       |       |       ||
 || Content part      ||        || part  | part  | part  ||
 |+-------------------+|        ||       |       |       ||
 ||  Footer part      ||        ||       |       |       ||
 |+-------------------+|        |+-------+-------+-------+|
 |TernaryContainer     |        |TernaryContainer         |
 +---------------------+        +-------------------------+

• 如果要使用在Dialog中，设置选项inDialog为true，这样就会设置容器的宽度最大在屏幕的72%。否则以全屏宽度计。

Inheritance

• Object
• DiagnosticableTree
• Widget
• StatelessWidget
• TernaryContainer

Constructors

TernaryContainer({Key? key, required Widget header, required Widget content, required Widget footer, MainAxisAlignment mainAxisAlignment = MainAxisAlignment.start, MainAxisSize mainAxisSize = MainAxisSize.min, CrossAxisAlignment crossAxisAlignment = CrossAxisAlignment.center, bool inDialog = false, Axis direction = Axis.vertical})

Properties

content → Widget

final

crossAxisAlignment → CrossAxisAlignment

final

direction → Axis

final

footer → Widget

final

hashCode → int

The hash code for this object.

no setter, inherited

header → Widget

final

inDialog → bool

用于判断是否在对话框中使用，对话框的宽度一般设置为屏宽的72%。此值默认为false

final

key → Key?

Controls how one widget replaces another widget in the tree.

final, inherited

mainAxisAlignment → MainAxisAlignment

final

mainAxisSize → MainAxisSize

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

build(BuildContext context) → Widget

Describes the part of the user interface represented by this widget.

override

createElement() → StatelessElement

Creates a StatelessElement to manage this widget's location in the tree.

inherited

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