75 lines
1.6 KiB
JavaScript
75 lines
1.6 KiB
JavaScript
import { ApplicationService } from 'snjs';
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export class PureCtrl extends ApplicationService {
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/* @ngInject */
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constructor(
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$scope,
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$timeout,
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application,
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appState
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) {
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if (!$scope || !$timeout || !application || !appState) {
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throw 'Invalid PureCtrl construction.';
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}
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super(application);
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this.$scope = $scope;
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this.$timeout = $timeout;
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this.appState = appState;
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this.props = {};
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/* Allow caller constructor to finish setting instance variables */
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setImmediate(() => {
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this.state = this.getInitialState();
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});
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$scope.$on('$destroy', () => {
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this.unsubState();
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this.deinit();
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});
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}
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$onInit() {
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this.addAppStateObserver();
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}
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/** @private */
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async resetState() {
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this.state = this.getInitialState();
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await this.setState(this.state);
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}
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/** @override */
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getInitialState() {
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return {};
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}
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async setState(state) {
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return new Promise((resolve) => {
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this.$timeout(() => {
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this.state = Object.freeze(Object.assign({}, this.state, state));
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resolve();
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});
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});
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}
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initProps(props) {
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if (Object.keys(this.props).length > 0) {
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throw 'Already init-ed props.';
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}
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this.props = Object.freeze(Object.assign({}, this.props, props));
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}
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addAppStateObserver() {
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this.unsubState = this.appState.addObserver((eventName, data) => {
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this.onAppStateEvent(eventName, data);
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});
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}
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onAppStateEvent(eventName, data) {
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/** Optional override */
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}
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/** @override */
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async onAppStart() {
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await this.resetState();
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return super.onAppStart();
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}
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} |