extendTo method
- TextPosition position
Keeping the selection's TextSelection.baseOffset fixed, pivot the TextSelection.extentOffset to the given TextPosition.
In some cases, the TextSelection.baseOffset and TextSelection.extentOffset may flip during this operation, and/or the size of the selection may shrink.
Difference with expandTo
In contrast with this method, expandTo is strictly growth; the selection is grown to include the given TextPosition and will never shrink.
Implementation
TextSelection extendTo(TextPosition position) {
// If the selection's extent is at the position already, then nothing
// happens.
if (extent == position) {
return this;
}
return copyWith(
extentOffset: position.offset,
affinity: position.affinity,
);
}