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Module: core/updateSelections/getOffsetsForNonEmptyRangeInsert

Functions​

getOffsetsForNonEmptyRangeInsert​

▸ getOffsetsForNonEmptyRangeInsert(changeEventInfo, rangeInfo): RangeOffsets

Gets updated offsets for the range rangeInfo after the change described by changeEventInfo. This function will only be called if the following hold:

  • the change is an insert event, ie a change event for which the original range is empty,
  • the range to be updated is nonempty, and
  • the insertion position is non-strictly contained by the range to be updated, ie inside the range or at its start or end.

The approach taken here is to leave the selection unchanged in the case of internal insertions (ie insertion position is strictly greater than start and strictly less than end). In that case, we just update the position of the range end position to take into account the shift from the insertion.

In the case of insertions that are at the beginning or end of the range, we look at the expansionBehavior of the given end of the range. If it is "open", we expand to contain the new text, if "closed" we do not expand, and if "regex" we anchor the regex at the other end of the range and see how far it extends into the newly inserted text.

Parameters​

NameTypeDescription
changeEventInfoChangeEventInfoInformation about the change that occurred
rangeInfoFullRangeInfoThe range to compute new offsets for

Returns​

RangeOffsets

The new offsets for the given range

Defined in​

core/updateSelections/getOffsetsForNonEmptyRangeInsert.ts:37