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getCaretPosition considering all html elements (#1246)

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This commit is contained in:
Meisam
2021-07-23 20:20:59 +02:00
committed by GitHub
parent e1c4b452e6
commit 7867260b9c
1 changed files with 13 additions and 26 deletions
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37
webroot/js/utils/chat.js
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@@ -4,31 +4,18 @@ import {
CHAT_PLACEHOLDER_OFFLINE,
} from './constants.js';
// Taken from https://stackoverflow.com/questions/3972014/get-contenteditable-caret-index-position
export function getCaretPosition(editableDiv) {
var caretPos = 0,
sel,
range;
if (window.getSelection) {
sel = window.getSelection();
if (sel.rangeCount) {
range = sel.getRangeAt(0);
if (range.commonAncestorContainer.parentNode == editableDiv) {
caretPos = range.endOffset;
}
}
} else if (document.selection && document.selection.createRange) {
range = document.selection.createRange();
if (range.parentElement() == editableDiv) {
var tempEl = document.createElement('span');
editableDiv.insertBefore(tempEl, editableDiv.firstChild);
var tempRange = range.duplicate();
tempRange.moveToElementText(tempEl);
tempRange.setEndPoint('EndToEnd', range);
caretPos = tempRange.text.length;
}
}
return caretPos;
// Taken from https://stackoverflow.com/a/46902361
export function getCaretPosition(node) {
var range = window.getSelection().getRangeAt(0),
preCaretRange = range.cloneRange(),
caretPosition,
tmp = document.createElement("div");
preCaretRange.selectNodeContents(node);
preCaretRange.setEnd(range.endContainer, range.endOffset);
tmp.appendChild(preCaretRange.cloneContents());
caretPosition = tmp.innerHTML.length;
return caretPosition;
}
// Might not need this anymore