51 lines
797 B
JavaScript
51 lines
797 B
JavaScript
const {Subscribable} = require("./subscribable.js")
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class SubscribeSet extends Subscribable {
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constructor() {
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super()
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Object.assign(this.events, {
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addItem: [],
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deleteItem: [],
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changeItem: [],
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askAdd: []
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})
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Object.assign(this.eventDeps, {
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addItem: ["changeItem"],
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deleteItem: ["changeItem"],
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changeItem: [],
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askAdd: []
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})
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this.set = new Set()
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}
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has(key) {
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return this.set.has(key)
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}
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forEach(f) {
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for (const key of this.set.keys()) {
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f(key)
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}
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}
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askAdd(key) {
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this.broadcast("askAdd", key)
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}
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add(key) {
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if (!this.set.has(key)) {
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this.set.add(key)
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this.broadcast("addItem", key)
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}
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}
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delete(key) {
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if (this.set.has(key)) {
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this.set.delete(key)
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this.broadcast("deleteItem", key)
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}
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}
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}
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module.exports = {SubscribeSet}
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