forked from EVOgeek/Vmeda.Online
121 lines
4.4 KiB
TypeScript
121 lines
4.4 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 } from '@angular/core';
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import { CoreUserDelegate, CoreUserProfileHandler, CoreUserProfileHandlerData } from '@core/user/providers/user-delegate';
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import { CoreSitesProvider } from '@providers/sites';
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import { CoreContentLinksHelperProvider } from '@core/contentlinks/providers/helper';
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import { CoreGradesProvider } from './grades';
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/**
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* Profile grades handler.
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*/
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@Injectable()
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export class CoreGradesUserHandler implements CoreUserProfileHandler {
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name = 'CoreGrades:viewGrades';
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priority = 400;
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type = CoreUserDelegate.TYPE_NEW_PAGE;
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viewGradesEnabledCache = {};
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constructor(private linkHelper: CoreContentLinksHelperProvider, protected sitesProvider: CoreSitesProvider,
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private gradesProvider: CoreGradesProvider) { }
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/**
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* Clear view grades cache.
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* If a courseId and userId are specified, it will only delete the entry for that user and course.
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*
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* @param {number} [courseId] Course ID.
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* @param {number} [userId] User ID.
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*/
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clearViewGradesCache(courseId?: number, userId?: number): void {
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if (courseId && userId) {
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delete this.viewGradesEnabledCache[this.getCacheKey(courseId, userId)];
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} else {
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this.viewGradesEnabledCache = {};
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}
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}
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/**
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* Get a cache key to identify a course and a user.
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*
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* @param {number} courseId Course ID.
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* @param {number} userId User ID.
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* @return {string} Cache key.
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*/
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protected getCacheKey(courseId: number, userId: number): string {
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return courseId + '#' + userId;
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}
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/**
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* Check if handler is enabled.
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*
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* @return {boolean} Always enabled.
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*/
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isEnabled(): boolean {
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return true;
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}
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/**
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* Check if handler is enabled for this user in this context.
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*
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* @param {any} user User to check.
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* @param {number} courseId Course ID.
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* @param {any} [navOptions] Course navigation options for current user. See CoreCoursesProvider.getUserNavigationOptions.
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* @param {any} [admOptions] Course admin options for current user. See CoreCoursesProvider.getUserAdministrationOptions.
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* @return {boolean|Promise<boolean>} Promise resolved with true if enabled, resolved with false otherwise.
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*/
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isEnabledForUser(user: any, courseId: number, navOptions?: any, admOptions?: any): boolean | Promise<boolean> {
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const cacheKey = this.getCacheKey(courseId, user.id),
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cache = this.viewGradesEnabledCache[cacheKey];
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if (typeof cache != 'undefined') {
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return cache;
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}
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return this.gradesProvider.isPluginEnabledForCourse(courseId).then(() => {
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return this.gradesProvider.getCourseGradesTable(courseId, user.id).then(() => {
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this.viewGradesEnabledCache[cacheKey] = true;
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return true;
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}).catch(() => {
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this.viewGradesEnabledCache[cacheKey] = false;
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return false;
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});
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});
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}
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/**
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* Returns the data needed to render the handler.
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*
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* @return {CoreUserProfileHandlerData} Data needed to render the handler.
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*/
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getDisplayData(user: any, courseId: number): CoreUserProfileHandlerData {
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return {
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icon: 'stats',
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title: 'core.grades.grades',
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class: 'core-grades-user-handler',
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action: (event, navCtrl, user, courseId): void => {
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event.preventDefault();
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event.stopPropagation();
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const pageParams = {
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courseId: courseId,
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userId: user.id
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};
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// Always use redirect to make it the new history root (to avoid "loops" in history).
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this.linkHelper.goInSite(navCtrl, 'CoreGradesCoursePage', pageParams);
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}
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};
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}
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}
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