315 lines
11 KiB
TypeScript
315 lines
11 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 { Injectable } from '@angular/core';
|
|
import { NavController } from 'ionic-angular';
|
|
import { CoreLoggerProvider } from '@providers/logger';
|
|
import { CoreSitesProvider } from '@providers/sites';
|
|
import { CoreUrlUtilsProvider } from '@providers/utils/url';
|
|
import { CoreUtilsProvider } from '@providers/utils/utils';
|
|
|
|
/**
|
|
* Interface that all handlers must implement.
|
|
*/
|
|
export interface CoreContentLinksHandler {
|
|
/**
|
|
* A name to identify the handler.
|
|
* @type {string}
|
|
*/
|
|
name: string;
|
|
|
|
/**
|
|
* Handler's priority. The highest priority is treated first.
|
|
* @type {number}
|
|
*/
|
|
priority?: number;
|
|
|
|
/**
|
|
* Whether the isEnabled function should be called for all the users in a site. It should be true only if the isEnabled call
|
|
* can return different values for different users in same site.
|
|
* @type {boolean}
|
|
*/
|
|
checkAllUsers?: boolean;
|
|
|
|
/**
|
|
* Name of the feature this handler is related to.
|
|
* It will be used to check if the feature is disabled (@see CoreSite.isFeatureDisabled).
|
|
* @type {string}
|
|
*/
|
|
featureName?: string;
|
|
|
|
/**
|
|
* Get the list of actions for a link (url).
|
|
*
|
|
* @param {string[]} siteIds List of sites the URL belongs to.
|
|
* @param {string} url The URL to treat.
|
|
* @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
|
|
* @param {number} [courseId] Course ID related to the URL. Optional but recommended.
|
|
* @return {CoreContentLinksAction[]|Promise<CoreContentLinksAction[]>} List of (or promise resolved with list of) actions.
|
|
*/
|
|
getActions(siteIds: string[], url: string, params: any, courseId?: number):
|
|
CoreContentLinksAction[] | Promise<CoreContentLinksAction[]>;
|
|
|
|
/**
|
|
* Check if a URL is handled by this handler.
|
|
*
|
|
* @param {string} url The URL to check.
|
|
* @return {boolean} Whether the URL is handled by this handler
|
|
*/
|
|
handles(url: string): boolean;
|
|
|
|
/**
|
|
* If the URL is handled by this handler, return the site URL.
|
|
*
|
|
* @param {string} url The URL to check.
|
|
* @return {string} Site URL if it is handled, undefined otherwise.
|
|
*/
|
|
getSiteUrl(url: string): string;
|
|
|
|
/**
|
|
* Check if the handler is enabled for a certain site (site + user) and a URL.
|
|
* If not defined, defaults to true.
|
|
*
|
|
* @param {string} siteId The site ID.
|
|
* @param {string} url The URL to treat.
|
|
* @param {any} params The params of the URL. E.g. 'mysite.com?id=1' -> {id: 1}
|
|
* @param {number} [courseId] Course ID related to the URL. Optional but recommended.
|
|
* @return {boolean|Promise<boolean>} Whether the handler is enabled for the URL and site.
|
|
*/
|
|
isEnabled?(siteId: string, url: string, params: any, courseId?: number): boolean | Promise<boolean>;
|
|
}
|
|
|
|
/**
|
|
* Action to perform when a link is clicked.
|
|
*/
|
|
export interface CoreContentLinksAction {
|
|
/**
|
|
* A message to identify the action. Default: 'core.view'.
|
|
* @type {string}
|
|
*/
|
|
message?: string;
|
|
|
|
/**
|
|
* Name of the icon of the action. Default: 'eye'.
|
|
* @type {string}
|
|
*/
|
|
icon?: string;
|
|
|
|
/**
|
|
* IDs of the sites that support the action.
|
|
* @type {string[]}
|
|
*/
|
|
sites?: string[];
|
|
|
|
/**
|
|
* Action to perform when the link is clicked.
|
|
*
|
|
* @param {string} siteId The site ID.
|
|
* @param {NavController} [navCtrl] Nav Controller to use to navigate.
|
|
*/
|
|
action(siteId: string, navCtrl?: NavController): void;
|
|
}
|
|
|
|
/**
|
|
* Actions and priority for a handler and URL.
|
|
*/
|
|
export interface CoreContentLinksHandlerActions {
|
|
/**
|
|
* Handler's priority.
|
|
* @type {number}
|
|
*/
|
|
priority: number;
|
|
|
|
/**
|
|
* List of actions.
|
|
* @type {CoreContentLinksAction[]}
|
|
*/
|
|
actions: CoreContentLinksAction[];
|
|
}
|
|
|
|
/**
|
|
* Delegate to register handlers to handle links.
|
|
*/
|
|
@Injectable()
|
|
export class CoreContentLinksDelegate {
|
|
protected logger;
|
|
protected handlers: { [s: string]: CoreContentLinksHandler } = {}; // All registered handlers.
|
|
|
|
constructor(logger: CoreLoggerProvider, private sitesProvider: CoreSitesProvider, private urlUtils: CoreUrlUtilsProvider,
|
|
private utils: CoreUtilsProvider) {
|
|
this.logger = logger.getInstance('CoreContentLinksDelegate');
|
|
}
|
|
|
|
/**
|
|
* Get the list of possible actions to do for a URL.
|
|
*
|
|
* @param {string} url URL to handle.
|
|
* @param {number} [courseId] Course ID related to the URL. Optional but recommended.
|
|
* @param {string} [username] Username to use to filter sites.
|
|
* @return {Promise<CoreContentLinksAction[]>} Promise resolved with the actions.
|
|
*/
|
|
getActionsFor(url: string, courseId?: number, username?: string): Promise<CoreContentLinksAction[]> {
|
|
if (!url) {
|
|
return Promise.resolve([]);
|
|
}
|
|
|
|
// Get the list of sites the URL belongs to.
|
|
return this.sitesProvider.getSiteIdsFromUrl(url, true, username).then((siteIds) => {
|
|
const linkActions: CoreContentLinksHandlerActions[] = [],
|
|
promises = [],
|
|
params = this.urlUtils.extractUrlParams(url);
|
|
|
|
for (const name in this.handlers) {
|
|
const handler = this.handlers[name],
|
|
checkAll = handler.checkAllUsers,
|
|
isEnabledFn = this.isHandlerEnabled.bind(this, handler, url, params, courseId);
|
|
|
|
if (!handler.handles(url)) {
|
|
// Invalid handler or it doesn't handle the URL. Stop.
|
|
continue;
|
|
}
|
|
|
|
// Filter the site IDs using the isEnabled function.
|
|
promises.push(this.utils.filterEnabledSites(siteIds, isEnabledFn, checkAll).then((siteIds) => {
|
|
if (!siteIds.length) {
|
|
// No sites supported, no actions.
|
|
return;
|
|
}
|
|
|
|
return Promise.resolve(handler.getActions(siteIds, url, params, courseId)).then((actions) => {
|
|
if (actions && actions.length) {
|
|
// Set default values if any value isn't supplied.
|
|
actions.forEach((action) => {
|
|
action.message = action.message || 'core.view';
|
|
action.icon = action.icon || 'eye';
|
|
action.sites = action.sites || siteIds;
|
|
});
|
|
|
|
// Add them to the list.
|
|
linkActions.push({
|
|
priority: handler.priority,
|
|
actions: actions
|
|
});
|
|
}
|
|
});
|
|
}));
|
|
}
|
|
|
|
return this.utils.allPromises(promises).catch(() => {
|
|
// Ignore errors.
|
|
}).then(() => {
|
|
// Sort link actions by priority.
|
|
return this.sortActionsByPriority(linkActions);
|
|
});
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Get the site URL if the URL is supported by any handler.
|
|
*
|
|
* @param {string} url URL to handle.
|
|
* @return {string} Site URL if the URL is supported by any handler, undefined otherwise.
|
|
*/
|
|
getSiteUrl(url: string): string {
|
|
if (!url) {
|
|
return;
|
|
}
|
|
|
|
// Check if any handler supports this URL.
|
|
for (const name in this.handlers) {
|
|
const handler = this.handlers[name],
|
|
siteUrl = handler.getSiteUrl(url);
|
|
|
|
if (siteUrl) {
|
|
return siteUrl;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if a handler is enabled for a certain site and URL.
|
|
*
|
|
* @param {CoreContentLinksHandler} handler Handler to check.
|
|
* @param {string} url The URL to check.
|
|
* @param {any} params The params of the URL
|
|
* @param {number} courseId Course ID the URL belongs to (can be undefined).
|
|
* @param {string} siteId The site ID to check.
|
|
* @return {Promise<boolean>} Promise resolved with boolean: whether the handler is enabled.
|
|
*/
|
|
protected isHandlerEnabled(handler: CoreContentLinksHandler, url: string, params: any, courseId: number, siteId: string)
|
|
: Promise<boolean> {
|
|
let promise;
|
|
|
|
if (handler.featureName) {
|
|
// Check if the feature is disabled.
|
|
promise = this.sitesProvider.isFeatureDisabled(handler.featureName, siteId);
|
|
} else {
|
|
promise = Promise.resolve(false);
|
|
}
|
|
|
|
return promise.then((disabled) => {
|
|
if (disabled) {
|
|
return false;
|
|
}
|
|
|
|
if (!handler.isEnabled) {
|
|
// Handler doesn't implement isEnabled, assume it's enabled.
|
|
return true;
|
|
}
|
|
|
|
return handler.isEnabled(siteId, url, params, courseId);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Register a handler.
|
|
*
|
|
* @param {CoreContentLinksHandler} handler The handler to register.
|
|
* @return {boolean} True if registered successfully, false otherwise.
|
|
*/
|
|
registerHandler(handler: CoreContentLinksHandler): boolean {
|
|
if (typeof this.handlers[handler.name] !== 'undefined') {
|
|
this.logger.log(`Addon '${handler.name}' already registered`);
|
|
|
|
return false;
|
|
}
|
|
this.logger.log(`Registered addon '${handler.name}'`);
|
|
this.handlers[handler.name] = handler;
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Sort actions by priority.
|
|
*
|
|
* @param {CoreContentLinksHandlerActions[]} actions Actions to sort.
|
|
* @return {CoreContentLinksAction[]} Sorted actions.
|
|
*/
|
|
protected sortActionsByPriority(actions: CoreContentLinksHandlerActions[]): CoreContentLinksAction[] {
|
|
let sorted: CoreContentLinksAction[] = [];
|
|
|
|
// Sort by priority.
|
|
actions = actions.sort((a, b) => {
|
|
return a.priority <= b.priority ? 1 : -1;
|
|
});
|
|
|
|
// Fill result array.
|
|
actions.forEach((entry) => {
|
|
sorted = sorted.concat(entry.actions);
|
|
});
|
|
|
|
return sorted;
|
|
}
|
|
}
|