import BaseObservableMap from "./BaseObservableMap.js"; export default class ObservableMap extends BaseObservableMap { constructor(keyFn, initialValues) { super(); this._keyFn = keyFn; this._values = new Map(initialValues); } update(key, params) { const value = this._values.get(key); if (value !== undefined) { // could be the same value, so it's already updated // but we don't assume this here this._values.set(key, value); this.emitUpdate(key, value, params); return true; } return false; // or return existing value? } add(key, value) { if (!this._values.has(key)) { this._values.set(key, value); this.emitAdd(key, value); return true; } return false; // or return existing value? } remove(key) { const value = this._values.get(key); if (value !== undefined) { this._values.delete(key); this.emitRemove(key, value); return true; } else { return false; } } reset() { this._values.clear(); this.emitReset(); } get(key) { return this._values.get(key); } get size() { return this._values.size; } [Symbol.iterator]() { return this._values.entries(); } } //#ifdef TESTS export function tests() { return { test_add(assert) { let fired = 0; const map = new ObservableMap(); map.subscribe({ onAdd(key, value) { fired += 1; assert.equal(key, 1); assert.deepEqual(value, {value: 5}); } }); map.add(1, {value: 5}); assert.equal(map.size, 1); assert.equal(fired, 1); }, test_update(assert) { let fired = 0; const map = new ObservableMap(); const value = {number: 5}; map.add(1, value); map.subscribe({ onUpdate(key, value, params) { fired += 1; assert.equal(key, 1); assert.deepEqual(value, {number: 6}); assert.equal(params, "test"); } }); value.number = 6; map.update(1, "test"); assert.equal(fired, 1); }, test_update_unknown(assert) { let fired = 0; const map = new ObservableMap(v => v.id); map.subscribe({ onUpdate() { fired += 1; } }); const result = map.update(1); assert.equal(fired, 0); assert.equal(result, false); }, test_remove(assert) { let fired = 0; const map = new ObservableMap(); const value = {value: 5}; map.add(1, value); map.subscribe({ onRemove(key, value) { fired += 1; assert.equal(key, 1); assert.deepEqual(value, {value: 5}); } }); map.remove(1); assert.equal(map.size, 0); assert.equal(fired, 1); }, test_iterate(assert) { const results = []; const map = new ObservableMap(); map.add(1, {number: 5}); map.add(2, {number: 6}); map.add(3, {number: 7}); for (let e of map) { results.push(e); } assert.equal(results.length, 3); assert.equal(results.find(([key]) => key === 1)[1].number, 5); assert.equal(results.find(([key]) => key === 2)[1].number, 6); assert.equal(results.find(([key]) => key === 3)[1].number, 7); }, test_size(assert) { const map = new ObservableMap(); map.add(1, {number: 5}); map.add(2, {number: 6}); assert.equal(map.size, 2); }, } } //#endif