getSelectionStyle method
Returns style of specified text range.
If nothing is selected but we've toggled an attribute, we also merge those in our style before returning.
Implementation
NotusStyle getSelectionStyle() {
final start = _selection.start;
final length = _selection.end - start;
var lineStyle = document.collectStyle(start, length);
lineStyle = lineStyle.mergeAll(toggledStyles);
return lineStyle;
}