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sources.js
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sources.js
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import { DataSource } from './src'
export class NormalSource extends DataSource {
constructor(model) {
super()
this.model = model
}
getRoot(callback) {
callback(null, this.model)
}
getId(element) {
return element.id
}
hasChildren(element) {
return !!element.children
}
getChildren(element, callback) {
callback(null, element.children)
}
addChild(parent, element, afterElement, callback) {
if (!parent.children || !parent.children.length) {
parent.children = [element]
return callback(null)
}
let index = -1
if (afterElement) {
for (var i = 0; i < parent.children.length; i++) {
if (parent.children[i].id == afterElement.id) {
index = i
}
}
}
if (index == -1) {
index = parent.children.length - 1
}
parent.children.splice(index + 1, 0, element.id)
callback(null)
}
removeChild(parent, element, callback) {
let index = -1
for (var i = 0; i < parent.children.length; i++) {
if (parent.children[i].id == element.id) {
index = i
}
}
if (index > -1) {
parent.children.splice(index, 1)
}
callback(null)
}
}