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jscode enhance

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jscode enhance
This commit is contained in:
clark-cui
2021-09-22 20:11:48 +08:00
committed by Tienson Qin
parent 40a5cecaf3
commit 01eb9085e8
3 changed files with 122 additions and 106 deletions
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22
src/main/frontend/selection.js
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@@ -1,7 +1,7 @@
// Copied from https://stackoverflow.com/a/20336116
function isDescendant(parent, child) {
const isDescendant=(parent, child)=> {
// from http://stackoverflow.com/questions/2234979/how-to-check-in-javascript-if-one-element-is-a-child-of-another
var node = child;
let node = child;
while (node != null) {
if (node == parent) {
return true;
@@ -11,10 +11,10 @@ function isDescendant(parent, child) {
return false;
}
function getNodesBetween(rootNode, node1, node2) {
var resultNodes = [];
var isBetweenNodes = false;
for (var i = 0; i < rootNode.childNodes.length; i+= 1) {
const getNodesBetween=(rootNode, node1, node2)=> {
const resultNodes = [];
let isBetweenNodes = false;
for (let i = 0; i < rootNode.childNodes.length; i+= 1) {
if (isDescendant(rootNode.childNodes[i], node1) || isDescendant(rootNode.childNodes[i], node2)) {
if (resultNodes.length == 0) {
isBetweenNodes = true;
@@ -39,9 +39,9 @@ function getNodesBetween(rootNode, node1, node2) {
}
}
export var getSelectedNodes = function (selectionAncestor, startNode) {
export const getSelectedNodes = (selectionAncestor, startNode)=> {
// from https://developer.mozilla.org/en-US/docs/Web/API/Selection
var selection = null;
let selection = null;
if(window.getSelection){
selection = window.getSelection();
} else if(document.selection){
@@ -52,13 +52,13 @@ export var getSelectedNodes = function (selectionAncestor, startNode) {
if (selection.isCollapsed) {
return [];
};
var node2 = selection.focusNode;
const node2 = selection.focusNode;
return getNodesBetween(selectionAncestor, startNode, node2);
}
};
export var clearSelection = function () {
var selection = null;
export const clearSelection = ()=> {
let selection = null;
if(window.getSelection){
selection = window.getSelection();
} else if(document.selection){