75 lines
1.3 KiB
JavaScript
75 lines
1.3 KiB
JavaScript
const {Subscribable} = require("./subscribable.js")
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class SubscribeMap extends Subscribable {
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constructor(inner) {
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super()
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this.inner = inner
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Object.assign(this.events, {
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addItem: [],
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editItem: [],
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deleteItem: [],
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changeItem: [],
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askSet: []
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})
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Object.assign(this.eventDeps, {
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addItem: ["changeItem"],
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editItem: ["changeItem"],
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deleteItem: ["changeItem"],
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changeItem: [],
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askSet: []
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})
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this.map = new Map()
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}
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has(key) {
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return this.map.has(key) && this.map.get(key).exists()
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}
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get(key) {
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if (this.map.has(key)) {
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return this.map.get(key)
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} else {
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const item = new this.inner()
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this.map.set(key, item)
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return item
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}
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}
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forEach(f) {
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for (const entry of this.map.entries()) {
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f(entry[0], entry[1])
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}
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}
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askSet(key, value) {
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this.broadcast("askSet", {key, value})
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}
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set(key, value) {
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let s
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if (this.map.has(key)) {
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const exists = this.map.get(key).exists()
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s = this.map.get(key).set(value)
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if (exists) {
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this.broadcast("editItem", key)
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} else {
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this.broadcast("addItem", key)
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}
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} else {
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s = new this.inner().set(value)
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this.map.set(key, s)
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this.broadcast("addItem", key)
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}
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return s
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}
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delete(key) {
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if (this.backing.has(key)) {
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this.backing.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 = {SubscribeMap}
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