129 lines
4.7 KiB
TypeScript
129 lines
4.7 KiB
TypeScript
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// (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 { NavController } from 'ionic-angular';
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import { CoreCoursesProvider } from '../../courses/providers/courses';
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import { CoreCourseFormatHandler } from './format-delegate';
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import { CoreCourseProvider } from './course';
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/**
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* Default handler used when the course format doesn't have a specific implementation.
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*/
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@Injectable()
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export class CoreCourseFormatDefaultHandler implements CoreCourseFormatHandler {
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name = 'default';
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constructor(private coursesProvider: CoreCoursesProvider) {}
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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>} True or promise resolved with true if 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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* Get the title to use in course page.
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*
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* @param {any} course The course.
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* @return {string} Title.
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*/
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getCourseTitle?(course: any) : string {
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return course.fullname || '';
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}
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/**
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* Whether it allows seeing all sections at the same time. Defaults to true.
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*
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* @param {any} course The course to check.
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* @type {boolean} Whether it can view all sections.
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*/
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canViewAllSections(course: any) : boolean {
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return true;
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}
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/**
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* Whether the default section selector should be displayed. Defaults to true.
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*
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* @param {any} course The course to check.
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* @type {boolean} Whether the default section selector should be displayed.
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*/
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displaySectionSelector(course: any) : boolean {
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return true;
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}
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/**
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* Given a list of sections, get the "current" section that should be displayed first.
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*
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* @param {any} course The course to get the title.
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* @param {any[]} sections List of sections.
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* @return {any|Promise<any>} Current section (or promise resolved with current section).
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*/
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getCurrentSection(course: any, sections: any[]) : any|Promise<any> {
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// We need the "marker" to determine the current section.
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return this.coursesProvider.getCoursesByField('id', course.id).catch(() => {
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// Ignore errors.
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}).then((courses) => {
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if (courses && courses[0]) {
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// Find the marked section.
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let course = courses[0];
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for (let i = 0; i < sections.length; i++) {
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let section = sections[i];
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if (section.section == course.marker) {
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return section;
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}
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}
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}
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// Marked section not found or we couldn't retrieve the marker. Return the first section.
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for (let i = 0; i < sections.length; i++) {
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let section = sections[i];
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if (section.id != CoreCourseProvider.ALL_SECTIONS_ID) {
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return section;
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}
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}
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return Promise.reject(null);
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});
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}
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/**
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* Invalidate the data required to load the course format.
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*
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* @param {any} course The course to get the title.
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* @param {any[]} sections List of sections.
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* @return {Promise<any>} Promise resolved when the data is invalidated.
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*/
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invalidateData(course: any, sections: any[]) : Promise<any> {
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return this.coursesProvider.invalidateCoursesByField('id', course.id);
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}
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/**
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* Open the page to display a course. If not defined, the page CoreCourseSectionPage will be opened.
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* Implement it only if you want to create your own page to display the course. In general it's better to use the method
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* getCourseFormatComponent because it will display the course handlers at the top.
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* Your page should include the course handlers using CoreCoursesDelegate.
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*
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* @param {NavController} navCtrl The NavController instance to use.
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* @param {any} course The course to open. It should contain a "format" attribute.
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* @return {Promise<any>} Promise resolved when done.
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*/
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openCourse(navCtrl: NavController, course: any) : Promise<any> {
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return navCtrl.push('CoreCourseSectionPage', {course: course});
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}
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}
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