TextBoundary class abstract
An interface for retrieving the logical text boundary (as opposed to the visual boundary) at a given code unit offset in a document.
Either the getTextBoundaryAt method, or both the getLeadingTextBoundaryAt method and the getTrailingTextBoundaryAt method must be implemented.
Constructors
- TextBoundary()
-
A constant constructor to enable subclass override.
const
Properties
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
Methods
-
getLeadingTextBoundaryAt(
int position) → int? -
Returns the offset of the closest text boundary before or at the given
position, or null if no boundaries can be found. -
getTextBoundaryAt(
int position) → TextRange - Returns the text boundary range that encloses the input position.
-
getTrailingTextBoundaryAt(
int position) → int? -
Returns the offset of the closest text boundary after the given
position, or null if there is no boundary can be found afterposition. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited