selectParagraphAt method
Selects the paragraph containing globalPosition and shows the selection
handles and context toolbar.
Prefer this over selectAll when entering selection mode anchored on the
user's press position (e.g. a long-press menu's "select text" action).
See _selectAt for how the overlay is surfaced while narrowing to a
paragraph.
Implementation
void selectParagraphAt(Offset globalPosition) =>
_selectAt(globalPosition, TextGranularity.paragraph);