forked from EVOgeek/Vmeda.Online
106 lines
4.1 KiB
TypeScript
106 lines
4.1 KiB
TypeScript
// (C) Copyright 2015 Martin Dougiamas
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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 { Injectable, Injector } from '@angular/core';
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import { CoreCourseModulePrefetchHandlerBase } from '@core/course/classes/module-prefetch-handler';
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import { AddonModSurveyProvider } from './survey';
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import { AddonModSurveyHelperProvider } from './helper';
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/**
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* Handler to prefetch surveys.
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*/
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@Injectable()
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export class AddonModSurveyPrefetchHandler extends CoreCourseModulePrefetchHandlerBase {
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name = 'AddonModSurvey';
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modName = 'survey';
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component = AddonModSurveyProvider.COMPONENT;
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updatesNames = /^configuration$|^.*files$|^answers$/;
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constructor(injector: Injector, protected surveyProvider: AddonModSurveyProvider,
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protected surveyHelper: AddonModSurveyHelperProvider) {
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super(injector);
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}
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/**
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* Download or prefetch the content.
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*
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* @param {any} module The module object returned by WS.
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* @param {number} courseId Course ID.
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* @param {boolean} [prefetch] True to prefetch, false to download right away.
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* @param {string} [dirPath] Path of the directory where to store all the content files. This is to keep the files
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* relative paths and make the package work in an iframe. Undefined to download the files
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* in the filepool root survey.
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* @return {Promise<any>} Promise resolved when all content is downloaded. Data returned is not reliable.
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*/
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downloadOrPrefetch(module: any, courseId: number, prefetch?: boolean, dirPath?: string): Promise<any> {
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const promises = [];
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promises.push(super.downloadOrPrefetch(module, courseId, prefetch));
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promises.push(this.surveyProvider.getSurvey(courseId, module.id).then((survey) => {
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// If survey isn't answered, prefetch the questions.
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if (!survey.surveydone) {
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promises.push(this.surveyProvider.getQuestions(survey.id));
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}
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}));
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return Promise.all(promises);
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}
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/**
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* Returns survey intro files.
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*
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* @param {any} module The module object returned by WS.
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* @param {number} courseId Course ID.
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* @return {Promise<any[]>} Promise resolved with list of intro files.
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*/
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getIntroFiles(module: any, courseId: number): Promise<any[]> {
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return this.surveyProvider.getSurvey(courseId, module.id).catch(() => {
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// Not found, return undefined so module description is used.
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}).then((survey) => {
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return this.getIntroFilesFromInstance(module, survey);
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});
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}
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/**
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* Invalidate the prefetched content.
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*
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* @param {number} moduleId The module ID.
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* @param {number} courseId Course ID the module belongs to.
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* @return {Promise<any>} Promise resolved when the data is invalidated.
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*/
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invalidateContent(moduleId: number, courseId: number): Promise<any> {
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return this.surveyProvider.invalidateContent(moduleId, courseId);
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}
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/**
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* Invalidate WS calls needed to determine module status.
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*
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* @param {any} module Module.
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* @param {number} courseId Course ID the module belongs to.
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* @return {Promise<any>} Promise resolved when invalidated.
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*/
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invalidateModule(module: any, courseId: number): Promise<any> {
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return this.surveyProvider.invalidateSurveyData(courseId);
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}
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/**
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* Whether or not the handler is enabled on a site level.
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*
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* @return {boolean|Promise<boolean>} A boolean, or a promise resolved with a boolean, indicating if the handler is enabled.
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*/
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isEnabled(): boolean | Promise<boolean> {
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return true;
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}
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}
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