Vmeda.Online/src/core/course/directives/download-module-main-file.ts

82 lines
3.4 KiB
TypeScript

// (C) Copyright 2015 Martin Dougiamas
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import { Directive, Input, OnInit, ElementRef } from '@angular/core';
import { CoreCourseProvider } from '../providers/course';
import { CoreCourseHelperProvider } from '../providers/helper';
import { CoreDomUtilsProvider } from '@providers/utils/dom';
/**
* Directive to allow downloading and open the main file of a module.
* When the item with this directive is clicked, the module will be downloaded (if needed) and opened.
* This is meant for modules like mod_resource.
*
* This directive must receive either a module or a moduleId. If no files are provided, it will use module.contents.
*/
@Directive({
selector: '[core-course-download-module-main-file]'
})
export class CoreCourseDownloadModuleMainFileDirective implements OnInit {
@Input() module: any; // The module.
@Input() moduleId: string | number; // The module ID. Required if module is not supplied.
@Input() courseId: string | number; // The course ID.
@Input() component?: string; // Component to link the file to.
@Input() componentId?: string | number; // Component ID to use in conjunction with the component. If not defined, use moduleId.
@Input() files?: any[]; // List of files of the module. If not provided, use module.contents.
protected element: HTMLElement;
constructor(element: ElementRef, protected domUtils: CoreDomUtilsProvider, protected courseHelper: CoreCourseHelperProvider,
protected courseProvider: CoreCourseProvider) {
this.element = element.nativeElement || element;
}
/**
* Component being initialized.
*/
ngOnInit(): void {
this.element.addEventListener('click', (ev: Event): void => {
if (!this.module && !this.moduleId) {
return;
}
ev.preventDefault();
ev.stopPropagation();
const modal = this.domUtils.showModalLoading(),
courseId = typeof this.courseId == 'string' ? parseInt(this.courseId, 10) : this.courseId;
let promise;
if (this.module) {
// We already have the module.
promise = Promise.resolve(this.module);
} else {
// Try to get the module from cache.
this.moduleId = typeof this.moduleId == 'string' ? parseInt(this.moduleId, 10) : this.moduleId;
promise = this.courseProvider.getModule(this.moduleId, courseId);
}
promise.then((module) => {
const componentId = this.componentId || module.id;
return this.courseHelper.downloadModuleAndOpenFile(module, courseId, this.component, componentId, this.files);
}).catch((error) => {
this.domUtils.showErrorModalDefault(error, 'core.errordownloading', true);
}).finally(() => {
modal.dismiss();
});
});
}
}