getSpanForPositionVisitor method Null safety
- TextPosition position,
- Accumulator offset
override
Returns the text span that contains the given position in the text.
Implementation
@override
InlineSpan? getSpanForPositionVisitor(TextPosition position, Accumulator offset) {
if (text == null) {
return null;
}
final TextAffinity affinity = position.affinity;
final int targetOffset = position.offset;
final int endOffset = offset.value + text!.length;
if (offset.value == targetOffset && affinity == TextAffinity.downstream ||
offset.value < targetOffset && targetOffset < endOffset ||
endOffset == targetOffset && affinity == TextAffinity.upstream) {
return this;
}
offset.increment(text!.length);
return null;
}