insertTextDelta method
void
insertTextDelta(
- Node node,
- int index,
- Delta insertedDelta
)
Implementation
void insertTextDelta(
Node node,
int index,
Delta insertedDelta,
) {
final delta = node.delta;
if (delta == null) {
assert(false, 'The node must have a delta.');
return;
}
assert(
index <= delta.length && index >= 0,
'The index($index) is out of range or negative.',
);
final insert = Delta()
..retain(index)
..addAll(insertedDelta);
addDeltaToComposeMap(node, insert);
afterSelection = Selection.collapsed(
Position(path: node.path, offset: index + insertedDelta.length),
);
}