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: TextStyle(color: Colors.black),
    children: <InlineSpan>[
      WidgetSpan(
        alignment: PlaceholderAlignment.baseline,
        baseline: TextBaseline.alphabetic,
        child: ConstrainedBox(
          constraints: BoxConstraints(maxWidth: 100),
          child: TextField(),
        )
      ),
      TextSpan(
        text: '.',
      ),
    ],
  ),
)

See also:

Inheritance
Implementers
Annotations
  • @immutable

Constructors

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

Properties

children → List<InlineSpan>?
Returns the InlineSpan children list associated with this span if this is an instance of TextSpan, otherwise returns null.
@Deprecated('InlineSpan does not innately have children. Use TextSpan.children instead. ' 'This feature was deprecated after v1.7.3.'), read-only
hashCode → int
The hash code for this object. [...]
read-only, override
recognizer → GestureRecognizer?
Returns the GestureRecognizer associated with this span if this is an instance of TextSpan, otherwise returns null.
@Deprecated('InlineSpan does not innately have a recognizer. Use TextSpan.recognizer instead. ' 'This feature was deprecated after v1.7.3.'), read-only
runtimeType → Type
A representation of the runtime type of the object.
read-only, inherited
style → TextStyle?
The TextStyle to apply to this span. [...]
final
text → String?
Returns the text associated with this span if this is an instance of TextSpan, otherwise returns null.
@Deprecated('InlineSpan does not innately have text. Use TextSpan.text instead. ' 'This feature was deprecated after v1.7.3.'), read-only

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 checked 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
describeSemantics(Accumulator offset, List<int> semanticsOffsets, List semanticsElements) → void
Populates the semanticsOffsets and semanticsElements with the appropriate data to be able to construct a SemanticsNode. [...]
@Deprecated('Implement computeSemanticsInformation instead. ' 'This feature was deprecated after v1.7.3.')
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
Returns 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. [...]
visitTextSpan(bool visitor(TextSpan span)) → bool
Walks this TextSpan and any descendants in pre-order and calls visitor for each span that has content. [...]
@Deprecated('Use visitChildren instead. ' 'This feature was deprecated after v1.7.3.')

Operators

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