56 lines
1.6 KiB
TypeScript
56 lines
1.6 KiB
TypeScript
/*
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Copyright 2020 Bruno Windels <bruno@windels.cloud>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import {BaseObservable} from "../BaseObservable";
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export interface IMapObserver<K, V> {
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onReset(): void;
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onAdd(key: K, value:V): void;
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onUpdate(key: K, value: V, params: any): void;
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onRemove(key: K, value: V): void
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}
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export abstract class BaseObservableMap<K, V> extends BaseObservable<IMapObserver<K, V>> {
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emitReset() {
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for(let h of this._handlers) {
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h.onReset();
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}
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}
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// we need batch events, mostly on index based collection though?
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// maybe we should get started without?
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emitAdd(key: K, value: V) {
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for(let h of this._handlers) {
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h.onAdd(key, value);
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}
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}
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emitUpdate(key, value, params) {
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for(let h of this._handlers) {
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h.onUpdate(key, value, params);
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}
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}
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emitRemove(key, value) {
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for(let h of this._handlers) {
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h.onRemove(key, value);
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}
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}
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abstract [Symbol.iterator](): Iterator<[K, V]>;
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abstract get size(): number;
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abstract get(key: K): V | undefined;
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}
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