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caretPosition: Clarify comment in `getPosition()`

This commit is contained in:
Richard Hansen 2021-02-22 02:28:05 -05:00 committed by John McLear
parent 91955609af
commit 1908bedabe
1 changed files with 3 additions and 7 deletions
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10
src/static/js/caretPosition.js
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@ -6,17 +6,13 @@
exports.getPosition = () => {
const range = getSelectionRange();
if (!range || $(range.endContainer).closest('body')[0].id !== 'innerdocbody') return null;
// when there's a <br> or any element that has no height, we can't get
// the dimension of the element where the caret is
// When there's a <br> or any element that has no height, we can't get the dimension of the
// element where the caret is. As we can't get the element height, we create a text node to get
// the dimensions on the position.
const clonedRange = createSelectionRange(range);
// as we can't get the element height, we create a text node to get the dimensions
// on the position
const shadowCaret = $(document.createTextNode('|'));
clonedRange.insertNode(shadowCaret[0]);
clonedRange.selectNode(shadowCaret[0]);
const line = getPositionOfElementOrSelection(clonedRange);
shadowCaret.remove();
return line;