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* @Author: lijianzhang
* @Date: 2018-08-29 21:34:11
* @Last Modified by: lijianzhang
* @Last Modified time: 2018-08-30 00:34:16
*/
import Observer from './observer';
import useLog from './log';
export class Store {
queue: Set<number> = new Set();
onError(error) {
throw error;
}
stack = 0;
useDebug = false;
public useLog() {
const unLog = useLog();
this.unLog = () => {
unLog();
this.unLog = undefined;
};
return this.unLog;
}
unLog?: Function;
public observers: Map<number, Observer> = new Map();
public currentObservers: Observer[] = [];
get currentObserver() {
if (this.currentObservers.length === 0) return null;
return this.currentObservers[this.currentObservers.length - 1];
}
private readyToRun: boolean = false;
pushQueue(ids: Set<number>) {
ids.forEach(id => this.queue.add(id));
if (!this.inAction && !this.readyToRun) {
Promise.resolve().then(this.runQueue);
this.readyToRun = true;
}
}
runQueue = () => {
this.readyToRun = false;
if (this.queue.size === 0) return;
this.queue.forEach(id => this.observers.get(id).run());
this.queue.clear();
};
get inAction(): boolean {
return this.stack > 0;
}
}
const store = new Store();
export default store; |