MathField class
Widget that is like a TextField for math expressions.
Instead of launching a software keyboard, it will launch a custom keyboard UI in an OverlayEntry.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- MathField
Constructors
-
MathField({Key? key, bool autofocus = false, FocusNode? focusNode, MathFieldEditingController? controller, MathKeyboardType keyboardType = MathKeyboardType.expression, List<
String> variables = const ['x'], InputDecoration decoration = const InputDecoration(), void onChanged(String value)?, ValueChanged<String> ? onSubmitted, bool opensKeyboard = true}) -
Constructs a MathField widget.
const
Properties
- autofocus → bool
-
Whether this math field should focus itself if nothing else is already
focused.
final
- controller → MathFieldEditingController?
-
The controller for the math field.
final
- decoration → InputDecoration
-
The decoration to show around the math field.
final
- focusNode → FocusNode?
-
Defines the keyboard focus for this widget.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- keyboardType → MathKeyboardType
-
The keyboard type.
final
- onChanged → (void Function(String value)?)
-
Function that is called when the expression inside of the math field
changes,
final
-
onSubmitted
→ ValueChanged<
String> ? -
Called when the user indicates that they are done with editing the math
field.
final
- opensKeyboard → bool
-
Whether the field should open a keyboard on focus by itself or not.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
variables
→ List<
String> -
The additional variables a user can use.
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → _MathFieldState -
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}) → 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