updateStyle method
This is the core function of the rich_field_controller. I takes a required style
and applies it to the selected text. If there is no active selection, but
the focus is still on the TextFiled
, then the style is applied to the word
containing the cursor.
Implementation
void updateStyle(TextStyle style) {
selection = _paragraph.selection ?? selection;
_paragraph.updateSelectedTextStyle(style);
}