VerticalDirection enum Null safety

A direction in which boxes flow vertically.

This is used by the flex algorithm (e.g. Column) to decide in which direction to draw boxes.

This is also used to disambiguate start and end values (e.g. MainAxisAlignment.start or CrossAxisAlignment.end).

See also:

Inheritance

Constructors

VerticalDirection()
const

Values

up → const VerticalDirection

Boxes should start at the bottom and be stacked vertically towards the top.

The "start" is at the bottom, the "end" is at the top.

VerticalDirection()
down → const VerticalDirection

Boxes should start at the top and be stacked vertically towards the bottom.

The "start" is at the top, the "end" is at the bottom.

VerticalDirection()

Properties

hashCode int
The hash code for this object.
read-only, inherited
index int
A numeric identifier for the enumerated value.
read-only, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() String
A string representation of this object.
inherited

Operators

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

Constants

values → const List<VerticalDirection>
A constant List of the values in this enum, in order of their declaration.
[up, down]