InlineSpan class Null safety

An immutable span of inline content which forms part of a paragraph.

link
This example shows a tree of InlineSpans that make a query asking for a name with a TextField embedded inline. 
Text.rich(
  TextSpan(
    text: 'My name is ',
    style: const TextStyle(color: Colors.black),
    children: <InlineSpan>[
      WidgetSpan(
        alignment: PlaceholderAlignment.baseline,
        baseline: TextBaseline.alphabetic,
        child: ConstrainedBox(
          constraints: const BoxConstraints(maxWidth: 100),
          child: const TextField(),
        )
      ),
      const TextSpan(
        text: '.',
      ),
    ],
  ),
)

See also:

Inheritance
Implementers
Annotations

Constructors

InlineSpan({TextStyle? style})
Creates an InlineSpan with the given values.
const

Properties

hashCode → int
The hash code for this object.
read-only, override
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
style → TextStyle?
The TextStyle to apply to this span.
final

Methods

build(ParagraphBuilder builder, {double textScaleFactor = 1.0, List<PlaceholderDimensions>? dimensions}) → void
Apply the properties of this object to the given ParagraphBuilder, from which a Paragraph can be obtained.
codeUnitAt(int index) → int?
Returns the UTF-16 code unit at the given index in the flattened string.
codeUnitAtVisitor(int index, Accumulator offset) → int?
Performs the check at each InlineSpan for if the index falls within the range of the span and returns the corresponding code unit. Returns null otherwise.
@protected
compareTo(InlineSpan other) → RenderComparison
Describe the difference between this span and another, in terms of how much damage it will make to the rendering. The comparison is deep.
computeSemanticsInformation(List<InlineSpanSemanticsInformation> collector) → void
Walks the InlineSpan tree and accumulates a list of InlineSpanSemanticsInformation objects.
@protected
computeToPlainText(StringBuffer buffer, {bool includeSemanticsLabels = true, bool includePlaceholders = true}) → void
Walks the InlineSpan tree and writes the plain text representation to buffer.
@protected
debugAssertIsValid() → bool
In debug mode, throws an exception if the object is not in a valid configuration. Otherwise, returns true.
debugDescribeChildren() → List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
override
getSemanticsInformation() → List<InlineSpanSemanticsInformation>
Flattens the InlineSpan tree to a list of InlineSpanSemanticsInformation objects.
getSpanForPosition(TextPosition position) → InlineSpan?
Returns the InlineSpan that contains the given position in the text.
getSpanForPositionVisitor(TextPosition position, Accumulator offset) → InlineSpan?
Performs the check at each InlineSpan for if the position falls within the range of the span and returns the span if it does.
@protected
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent 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
toPlainText({bool includeSemanticsLabels = true, bool includePlaceholders = true}) → String
Flattens the InlineSpan tree into a single string.
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 brief description of this object, usually just the runtimeType and the hashCode.
inherited
visitChildren(InlineSpanVisitor visitor) → bool
Walks this InlineSpan and any descendants in pre-order and calls visitor for each span that has content.

Operators

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