80 lines
2.4 KiB
TypeScript
80 lines
2.4 KiB
TypeScript
// (C) Copyright 2015 Moodle Pty Ltd.
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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import { Component } from '@angular/core';
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import { TranslateService } from '@ngx-translate/core';
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import { IonicPage, ViewController, NavParams } from 'ionic-angular';
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import { CoreDomUtilsProvider } from '@providers/utils/dom';
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import { CoreUtilsProvider } from '@providers/utils/utils';
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/**
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* Page to scan a QR code.
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*/
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@IonicPage({ segment: 'core-viewer-qr-scanner' })
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@Component({
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selector: 'page-core-viewer-qr-scanner',
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templateUrl: 'qr-scanner.html',
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})
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export class CoreViewerQRScannerPage {
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title: string; // Page title.
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constructor(params: NavParams,
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translate: TranslateService,
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protected viewCtrl: ViewController,
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protected domUtils: CoreDomUtilsProvider,
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protected utils: CoreUtilsProvider) {
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this.title = params.get('title') || translate.instant('core.scanqr');
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this.utils.startScanQR().then((text) => {
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// Text captured, return it.
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text = typeof text == 'string' ? text.trim() : '';
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this.closeModal(text);
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}).catch((error) => {
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if (!this.domUtils.isCanceledError(error)) {
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// Show error and stop scanning.
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this.domUtils.showErrorModalDefault(error, 'An error occurred.');
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this.utils.stopScanQR();
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}
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this.closeModal();
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});
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}
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/**
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* Cancel scanning.
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*/
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cancel(): void {
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this.utils.stopScanQR();
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}
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/**
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* Close modal.
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*
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* @param text The text to return (if any).
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*/
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closeModal(text?: string): void {
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this.viewCtrl.dismiss(text);
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}
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/**
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* View will leave.
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*/
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ionViewWillLeave(): void {
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// If this code is reached and scan hasn't been stopped yet it means the user clicked the back button, cancel.
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this.utils.stopScanQR();
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}
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}
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