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17 * This module will tie together all of the different calls the gradable module will make.
19 * @module mod_forum/local/grades/grader
21 * @copyright 2019 Mathew May <mathew.solutions>
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 import Templates from 'core/templates';
25 import Selectors from './local/grader/selectors';
26 import getUserPicker from './local/grader/user_picker';
27 import {createLayout as createFullScreenWindow} from 'mod_forum/local/layout/fullscreen';
28 import getGradingPanelFunctions from './local/grader/gradingpanel';
29 import {add as addToast} from 'core/toast';
30 import {get_string as getString} from 'core/str';
31 import {failedUpdate} from 'core_grades/grades/grader/gradingpanel/normalise';
32 import {addIconToContainerWithPromise} from 'core/loadingicon';
33 import {debounce} from 'core/utils';
34 import {fillInitialValues} from 'core_grades/grades/grader/gradingpanel/comparison';
36 const templateNames = {
38 app: 'mod_forum/local/grades/grader',
40 error: 'mod_forum/local/grades/local/grader/gradingpanel/error',
42 searchResults: 'mod_forum/local/grades/local/grader/user_picker/user_search',
43 status: 'mod_forum/local/grades/local/grader/status',
48 * Helper function that replaces the user picker placeholder with what we get back from the user picker class.
50 * @param {HTMLElement} root
51 * @param {String} html
53 const displayUserPicker = (root, html) => {
54 const pickerRegion = root.querySelector(Selectors.regions.pickerRegion);
55 Templates.replaceNodeContents(pickerRegion, html, '');
59 * To be removed, this is now done as a part of Templates.renderForPromise()
61 * @param {String} html
65 const fetchContentFromRender = (html, js) => {
70 * Here we build the function that is passed to the user picker that'll handle updating the user content area
71 * of the grading interface.
73 * @param {HTMLElement} root
74 * @param {Function} getContentForUser
75 * @param {Function} getGradeForUser
78 const getUpdateUserContentFunction = (root, getContentForUser, getGradeForUser) => {
81 return async(user) => {
82 const spinner = firstLoad ? null : addIconToContainerWithPromise(root);
86 ] = await Promise.all([
87 getContentForUser(user.id).then(fetchContentFromRender),
88 getGradeForUser(user.id),
90 Templates.replaceNodeContents(root.querySelector(Selectors.regions.moduleReplace), html, js);
95 ] = await Templates.render(userGrade.templatename, userGrade.grade).then(fetchContentFromRender);
96 const panelContainer = root.querySelector(Selectors.regions.gradingPanelContainer);
97 const panel = panelContainer.querySelector(Selectors.regions.gradingPanel);
98 Templates.replaceNodeContents(panel, gradingPanelHtml, gradingPanelJS);
99 fillInitialValues(panel.querySelector('form'));
101 panelContainer.scrollTop = 0;
111 * Show the search results container and hide the user picker and body content.
113 * @param {HTMLElement} bodyContainer The container element for the body content
114 * @param {HTMLElement} userPickerContainer The container element for the user picker
115 * @param {HTMLElement} searchResultsContainer The container element for the search results
117 const showSearchResultContainer = (bodyContainer, userPickerContainer, searchResultsContainer) => {
118 bodyContainer.classList.add('hidden');
119 userPickerContainer.classList.add('hidden');
120 searchResultsContainer.classList.remove('hidden');
124 * Hide the search results container and show the user picker and body content.
126 * @param {HTMLElement} bodyContainer The container element for the body content
127 * @param {HTMLElement} userPickerContainer The container element for the user picker
128 * @param {HTMLElement} searchResultsContainer The container element for the search results
130 const hideSearchResultContainer = (bodyContainer, userPickerContainer, searchResultsContainer) => {
131 bodyContainer.classList.remove('hidden');
132 userPickerContainer.classList.remove('hidden');
133 searchResultsContainer.classList.add('hidden');
137 * Toggles the visibility of the user search.
139 * @param {HTMLElement} toggleSearchButton The button that toggles the search
140 * @param {HTMLElement} searchContainer The container element for the user search
141 * @param {HTMLElement} searchInput The input element for searching
143 const showUserSearchInput = (toggleSearchButton, searchContainer, searchInput) => {
144 searchContainer.classList.remove('collapsed');
145 toggleSearchButton.setAttribute('aria-expanded', 'true');
146 toggleSearchButton.classList.add('expand');
147 toggleSearchButton.classList.remove('collapse');
152 * Toggles the visibility of the user search.
154 * @param {HTMLElement} toggleSearchButton The button that toggles the search
155 * @param {HTMLElement} searchContainer The container element for the user search
156 * @param {HTMLElement} searchInput The input element for searching
158 const hideUserSearchInput = (toggleSearchButton, searchContainer, searchInput) => {
159 searchContainer.classList.add('collapsed');
160 toggleSearchButton.setAttribute('aria-expanded', 'false');
161 toggleSearchButton.classList.add('collapse');
162 toggleSearchButton.classList.remove('expand');
163 toggleSearchButton.focus();
164 searchInput.value = '';
168 * Find the list of users who's names include the given search term.
170 * @param {Array} userList List of users for the grader
171 * @param {String} searchTerm The search term to match
174 const searchForUsers = (userList, searchTerm) => {
175 if (searchTerm === '') {
179 searchTerm = searchTerm.toLowerCase();
181 return userList.filter((user) => {
182 return user.fullname.toLowerCase().includes(searchTerm);
187 * Render the list of users in the search results area.
189 * @param {HTMLElement} searchResultsContainer The container element for search results
190 * @param {Array} users The list of users to display
192 const renderSearchResults = async (searchResultsContainer, users) => {
193 const {html, js} = await Templates.renderForPromise(templateNames.grader.searchResults, {users});
194 Templates.replaceNodeContents(searchResultsContainer, html, js);
198 * Add click handlers to the buttons in the header of the grading interface.
200 * @param {HTMLElement} graderLayout
201 * @param {Object} userPicker
202 * @param {Function} saveGradeFunction
203 * @param {Array} userList List of users for the grader.
205 const registerEventListeners = (graderLayout, userPicker, saveGradeFunction, userList) => {
206 const graderContainer = graderLayout.getContainer();
207 const toggleSearchButton = graderContainer.querySelector(Selectors.buttons.toggleSearch);
208 const searchInputContainer = graderContainer.querySelector(Selectors.regions.userSearchContainer);
209 const searchInput = searchInputContainer.querySelector(Selectors.regions.userSearchInput);
210 const bodyContainer = graderContainer.querySelector(Selectors.regions.bodyContainer);
211 const userPickerContainer = graderContainer.querySelector(Selectors.regions.pickerRegion);
212 const searchResultsContainer = graderContainer.querySelector(Selectors.regions.searchResultsContainer);
214 graderContainer.addEventListener('click', (e) => {
215 if (e.target.closest(Selectors.buttons.toggleFullscreen)) {
216 e.stopImmediatePropagation();
218 graderLayout.toggleFullscreen();
223 if (e.target.closest(Selectors.buttons.closeGrader)) {
224 e.stopImmediatePropagation();
227 graderLayout.close();
232 if (e.target.closest(Selectors.buttons.saveGrade)) {
233 saveGradeFunction(userPicker.currentUser);
236 if (e.target.closest(Selectors.buttons.toggleSearch)) {
237 if (toggleSearchButton.getAttribute('aria-expanded') === 'true') {
238 // Search is open so let's close it.
239 hideUserSearchInput(toggleSearchButton, searchInputContainer, searchInput);
240 hideSearchResultContainer(bodyContainer, userPickerContainer, searchResultsContainer);
241 searchResultsContainer.innerHTML = '';
243 // Search is closed so let's open it.
244 showUserSearchInput(toggleSearchButton, searchInputContainer, searchInput);
245 showSearchResultContainer(bodyContainer, userPickerContainer, searchResultsContainer);
246 renderSearchResults(searchResultsContainer, userList);
252 const selectUserButton = e.target.closest(Selectors.buttons.selectUser);
253 if (selectUserButton) {
254 const userId = selectUserButton.getAttribute('data-userid');
255 const user = userList.find(user => user.id == userId);
256 userPicker.setUserId(userId);
257 userPicker.showUser(user);
258 hideUserSearchInput(toggleSearchButton, searchInputContainer, searchInput);
259 hideSearchResultContainer(bodyContainer, userPickerContainer, searchResultsContainer);
260 searchResultsContainer.innerHTML = '';
264 // Debounce the search input so that it only executes 300 milliseconds after the user has finished typing.
265 searchInput.addEventListener('input', debounce(() => {
266 const users = searchForUsers(userList, searchInput.value);
267 renderSearchResults(searchResultsContainer, users);
272 * Get the function used to save a user grade.
274 * @param {HTMLElement} root The container for the grader
275 * @param {Function} setGradeForUser The function that will be called.
278 const getSaveUserGradeFunction = (root, setGradeForUser) => {
279 return async(user) => {
281 root.querySelector(Selectors.regions.gradingPanelErrors).innerHTML = '';
282 const result = await setGradeForUser(user.id, root.querySelector(Selectors.regions.gradingPanel));
283 if (result.success) {
284 addToast(await getString('grades:gradesavedfor', 'mod_forum', user));
287 displayGradingError(root, user, result.error);
292 displayGradingError(root, user, err);
294 return failedUpdate(err);
300 * Display a grading error, typically from a failed save.
302 * @param {HTMLElement} root The container for the grader
303 * @param {Object} user The user who was errored
304 * @param {Object} err The details of the error
306 const displayGradingError = async(root, user, err) => {
310 ] = await Promise.all([
311 Templates.renderForPromise(templateNames.grader.gradingPanel.error, {error: err}),
312 await getString('grades:gradesavefailed', 'mod_forum', {error: err.message, ...user}),
315 Templates.replaceNodeContents(root.querySelector(Selectors.regions.gradingPanelErrors), html, js);
316 addToast(errorString);
320 * Launch the grader interface with the specified parameters.
322 * @param {Function} getListOfUsers A function to get the list of users
323 * @param {Function} getContentForUser A function to get the content for a specific user
324 * @param {Function} getGradeForUser A function get the grade details for a specific user
325 * @param {Function} setGradeForUser A function to set the grade for a specific user
327 export const launch = async(getListOfUsers, getContentForUser, getGradeForUser, setGradeForUser, {
328 initialUserId = null, moduleName, courseName, courseUrl, sendStudentNotifications = false,
331 // We need all of these functions to be executed in series, if one step runs before another the interface
337 ] = await Promise.all([
338 createFullScreenWindow({fullscreen: false, showLoader: false}),
340 Templates.renderForPromise(templateNames.grader.app, {
344 drawer: {show: true},
345 defaultsendnotifications: sendStudentNotifications,
349 const graderContainer = graderLayout.getContainer();
351 const saveGradeFunction = getSaveUserGradeFunction(graderContainer, setGradeForUser);
353 Templates.replaceNodeContents(graderContainer, html, js);
354 const updateUserContent = getUpdateUserContentFunction(graderContainer, getContentForUser, getGradeForUser);
356 const userIds = userList.map(user => user.id);
357 const statusContainer = graderContainer.querySelector(Selectors.regions.statusContainer);
358 // Fetch the userpicker for display.
359 const userPicker = await getUserPicker(
362 const renderContext = {
364 index: userIds.indexOf(user.id) + 1,
365 total: userList.length
367 Templates.render(templateNames.grader.status, renderContext).then(html => {
368 statusContainer.innerHTML = html;
371 updateUserContent(user);
379 // Register all event listeners.
380 registerEventListeners(graderLayout, userPicker, saveGradeFunction, userList);
382 // Display the newly created user picker.
383 displayUserPicker(graderContainer, userPicker.rootNode);
386 export {getGradingPanelFunctions};