forked from cadence/Carbon
86 lines
1.6 KiB
JavaScript
86 lines
1.6 KiB
JavaScript
import {Subscribable} from "./Subscribable.js"
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import {SubscribeValue} from "./SubscribeValue.js"
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class SubscribeMapList 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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deleteItem: [],
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editItem: [],
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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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editItem: ["changeItem"],
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changeItem: [],
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askAdd: []
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})
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this.map = new Map()
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this.list = []
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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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this.list.forEach(key => f(key, this.get(key)))
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}
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askAdd(key, data) {
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this.broadcast("askAdd", {key, data})
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}
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addStart(key, value) {
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this._add(key, value, true)
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}
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addEnd(key, value) {
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this._add(key, value, false)
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}
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sort() {
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this.list.sort((a, b) => {
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const orderA = this.map.get(a).value().order
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const orderB = this.map.get(b).value().order
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return orderA - orderB
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})
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this.broadcast("changeItem")
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}
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_add(key, value, start) {
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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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if (start) this.list.unshift(key)
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else this.list.push(key)
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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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}
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export {SubscribeMapList}
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