consumerportal/js/src/services/generic/qlock.ts

mydna Custimised for you

module services {

    export interface IQLockFactory {
        create(fn: Function): QLock
    }

    export interface IQLock {
        call(...args): angular.IPromise<any>
        reset(): void
    }

    export class QLock implements IQLock {
        private busy: boolean = false;
        private value: any;
        constructor(
            private fn: Function,
            private defer: angular.IDeferred<any>) {
        }
        public call(... args) {
            if (!this.value) {
                if (!this.busy) {
                    this.busy = true;
                        this.fn.call(this, args).then((value: any) => {
                            this.busy = false;
                            this.defer.resolve(value);
                        });
                    }
            } else {
                this.defer.resolve(this.value);
            }
            return this.defer.promise;
        }
        public reset() {
            this.value = null;
            this.busy = false;
        }
    }

    class QLockFactory implements IQLockFactory {

        static $inject = ['$q'];
        constructor(private $q: angular.IQService) {}

        create(fn: Function): QLock {
            return new QLock(fn, this.$q.defer());
        }
    }

    /*angular
        .module('app')
        .service('$qLock', QLockFactory);
*/
}