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/**
* @license
* Copyright (C) 2017 "IoT.bzh"
* Author Sebastien Douheret <sebastien@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import { Injectable, SecurityContext } from '@angular/core';
import { Observable } from 'rxjs/Observable';
import { Subject } from 'rxjs/Subject';
export type AlertType = 'error' | 'warning' | 'info' | 'success';
export interface IAlert {
type: AlertType;
msg: string;
show?: boolean;
dismissible?: boolean;
dismissTimeout?: number; // close alert after this time (in seconds)
id?: number;
}
@Injectable()
export class AlertService {
public alerts: Observable<IAlert[]>;
private _alerts: IAlert[];
private alertsSubject = <Subject<IAlert[]>>new Subject();
private uid = 0;
private defaultDismissTmo = 5; // in seconds
constructor() {
this.alerts = this.alertsSubject.asObservable();
this._alerts = [];
this.uid = 0;
}
public error(msg: string, dismissTime?: number) {
this.add({
type: 'error', msg: msg, dismissible: true, dismissTimeout: dismissTime,
});
}
public warning(msg: string, dismissible?: boolean) {
this.add({ type: 'warning', msg: msg, dismissible: true, dismissTimeout: (dismissible ? this.defaultDismissTmo : 0) });
}
public info(msg: string) {
this.add({ type: 'info', msg: msg, dismissible: true, dismissTimeout: this.defaultDismissTmo });
}
public add(al: IAlert) {
const msg = String(al.msg).replace('\n', '<br>');
// this._alerts.push({
this._alerts = [{
show: true,
type: al.type,
msg: msg,
dismissible: al.dismissible || true,
dismissTimeout: (al.dismissTimeout * 1000) || 0,
id: this.uid,
}];
this.uid += 1;
this.alertsSubject.next(this._alerts);
}
public del(al: IAlert) {
/*
const idx = this._alerts.findIndex((a) => a.id === al.id);
if (idx > -1) {
this._alerts.splice(idx, 1);
this.alertsSubject.next(this._alerts);
}
*/
this._alerts = [];
this.alertsSubject.next(this._alerts);
}
}
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