Your IP : 216.73.216.95
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This file is part of Moodle - http://moodle.org/\n//\n// Moodle is free software: you can redistribute it and/or modify\n// it under the terms of the GNU General Public License as published by\n// the Free Software Foundation, either version 3 of the License, or\n// (at your option) any later version.\n//\n// Moodle is distributed in the hope that it will be useful,\n// but WITHOUT ANY WARRANTY; without even the implied warranty of\n// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n// GNU General Public License for more details.\n//\n// You should have received a copy of the GNU General Public License\n// along with Moodle. If not, see <http://www.gnu.org/licenses/>.\n\n/**\n * Controls the notification popover in the nav bar.\n *\n * See template: message_popup/notification_popover\n *\n * @module message_popup/notification_popover_controller\n * @class notification_popover_controller\n * @package message_popup\n * @copyright 2016 Ryan Wyllie <ryan@moodle.com>\n * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later\n */\ndefine(['jquery', 'core/ajax', 'core/templates', 'core/str', 'core/url',\n 'core/notification', 'core/custom_interaction_events', 'core/popover_region_controller',\n 'message_popup/notification_repository', 'message_popup/notification_area_events'],\n function($, Ajax, Templates, Str, URL, DebugNotification, CustomEvents,\n PopoverController, NotificationRepo, NotificationAreaEvents) {\n\n var SELECTORS = {\n MARK_ALL_READ_BUTTON: '[data-action=\"mark-all-read\"]',\n ALL_NOTIFICATIONS_CONTAINER: '[data-region=\"all-notifications\"]',\n NOTIFICATION: '[data-region=\"notification-content-item-container\"]',\n UNREAD_NOTIFICATION: '[data-region=\"notification-content-item-container\"].unread',\n NOTIFICATION_LINK: '[data-action=\"content-item-link\"]',\n EMPTY_MESSAGE: '[data-region=\"empty-message\"]',\n COUNT_CONTAINER: '[data-region=\"count-container\"]',\n };\n\n /**\n * Constructor for the NotificationPopoverController.\n * Extends PopoverRegionController.\n *\n * @param {object} element jQuery object root element of the popover\n */\n var NotificationPopoverController = function(element) {\n // Initialise base class.\n PopoverController.call(this, element);\n\n this.markAllReadButton = this.root.find(SELECTORS.MARK_ALL_READ_BUTTON);\n this.unreadCount = 0;\n this.lastQueried = 0;\n this.userId = this.root.attr('data-userid');\n this.container = this.root.find(SELECTORS.ALL_NOTIFICATIONS_CONTAINER);\n this.limit = 20;\n this.offset = 0;\n this.loadedAll = false;\n this.initialLoad = false;\n\n // Let's find out how many unread notifications there are.\n this.unreadCount = this.root.find(SELECTORS.COUNT_CONTAINER).html();\n };\n\n /**\n * Clone the parent prototype.\n */\n NotificationPopoverController.prototype = Object.create(PopoverController.prototype);\n\n /**\n * Make sure the constructor is set correctly.\n */\n NotificationPopoverController.prototype.constructor = NotificationPopoverController;\n\n /**\n * Set the correct aria label on the menu toggle button to be read out by screen\n * readers. The message will indicate the state of the unread notifications.\n *\n * @method updateButtonAriaLabel\n */\n NotificationPopoverController.prototype.updateButtonAriaLabel = function() {\n if (this.isMenuOpen()) {\n Str.get_string('hidenotificationwindow', 'message').done(function(string) {\n this.menuToggle.attr('aria-label', string);\n }.bind(this));\n } else {\n if (this.unreadCount) {\n Str.get_string('shownotificationwindowwithcount', 'message', this.unreadCount).done(function(string) {\n this.menuToggle.attr('aria-label', string);\n }.bind(this));\n } else {\n Str.get_string('shownotificationwindownonew', 'message').done(function(string) {\n this.menuToggle.attr('aria-label', string);\n }.bind(this));\n }\n }\n };\n\n /**\n * Return the jQuery element with the content. This will return either\n * the unread notification container or the all notification container\n * depending on which is currently visible.\n *\n * @method getContent\n * @return {object} jQuery object currently visible content contianer\n */\n NotificationPopoverController.prototype.getContent = function() {\n return this.container;\n };\n\n /**\n * Get the offset value for the current state of the popover in order\n * to sent to the backend to correctly paginate the notifications.\n *\n * @method getOffset\n * @return {int} current offset\n */\n NotificationPopoverController.prototype.getOffset = function() {\n return this.offset;\n };\n\n /**\n * Increment the offset for the current state, if required.\n *\n * @method incrementOffset\n */\n NotificationPopoverController.prototype.incrementOffset = function() {\n this.offset += this.limit;\n };\n\n /**\n * Check if the first load of notification has been triggered for the current\n * state of the popover.\n *\n * @method hasDoneInitialLoad\n * @return {bool} true if first notification loaded, false otherwise\n */\n NotificationPopoverController.prototype.hasDoneInitialLoad = function() {\n return this.initialLoad;\n };\n\n /**\n * Check if we've loaded all of the notifications for the current popover\n * state.\n *\n * @method hasLoadedAllContent\n * @return {bool} true if all notifications loaded, false otherwise\n */\n NotificationPopoverController.prototype.hasLoadedAllContent = function() {\n return this.loadedAll;\n };\n\n /**\n * Set the state of the loaded all content property for the current state\n * of the popover.\n *\n * @method setLoadedAllContent\n * @param {bool} val True if all content is loaded, false otherwise\n */\n NotificationPopoverController.prototype.setLoadedAllContent = function(val) {\n this.loadedAll = val;\n };\n\n /**\n * Show the unread notification count badge on the menu toggle if there\n * are unread notifications, otherwise hide it.\n *\n * @method renderUnreadCount\n */\n NotificationPopoverController.prototype.renderUnreadCount = function() {\n var element = this.root.find(SELECTORS.COUNT_CONTAINER);\n\n if (this.unreadCount) {\n element.text(this.unreadCount);\n element.removeClass('hidden');\n } else {\n element.addClass('hidden');\n }\n };\n\n /**\n * Hide the unread notification count badge on the menu toggle.\n *\n * @method hideUnreadCount\n */\n NotificationPopoverController.prototype.hideUnreadCount = function() {\n this.root.find(SELECTORS.COUNT_CONTAINER).addClass('hidden');\n };\n\n /**\n * Find the notification element for the given id.\n *\n * @param {int} id\n * @method getNotificationElement\n * @return {object|null} The notification element\n */\n NotificationPopoverController.prototype.getNotificationElement = function(id) {\n var element = this.root.find(SELECTORS.NOTIFICATION + '[data-id=\"' + id + '\"]');\n return element.length == 1 ? element : null;\n };\n\n /**\n * Render the notification data with the appropriate template and add it to the DOM.\n *\n * @method renderNotifications\n * @param {array} notifications Notification data\n * @param {object} container jQuery object the container to append the rendered notifications\n * @return {object} jQuery promise that is resolved when all notifications have been\n * rendered and added to the DOM\n */\n NotificationPopoverController.prototype.renderNotifications = function(notifications, container) {\n var promises = [];\n\n $.each(notifications, function(index, notification) {\n // Determine what the offset was when loading this notification.\n var offset = this.getOffset() - this.limit;\n // Update the view more url to contain the offset to allow the notifications\n // page to load to the correct position in the list of notifications.\n notification.viewmoreurl = URL.relativeUrl('/message/output/popup/notifications.php', {\n notificationid: notification.id,\n offset: offset,\n });\n\n // Link to mark read page before loading the actual link.\n var notificationurlparams = {\n notificationid: notification.id\n };\n\n notification.contexturl = URL.relativeUrl('message/output/popup/mark_notification_read.php', notificationurlparams);\n\n var promise = Templates.render('message_popup/notification_content_item', notification)\n .then(function(html, js) {\n return {html: html, js: js};\n });\n promises.push(promise);\n }.bind(this));\n\n return $.when.apply($, promises).then(function() {\n // Each of the promises in the when will pass its results as an argument to the function.\n // The order of the arguments will be the order that the promises are passed to when()\n // i.e. the first promise's results will be in the first argument.\n $.each(arguments, function(index, argument) {\n container.append(argument.html);\n Templates.runTemplateJS(argument.js);\n });\n return;\n });\n };\n\n /**\n * Send a request for more notifications from the server, if we aren't already\n * loading some and haven't already loaded all of them.\n *\n * Takes into account the current mode of the popover and will request only\n * unread notifications if required.\n *\n * All notifications are marked as read by the server when they are returned.\n *\n * @method loadMoreNotifications\n * @return {object} jQuery promise that is resolved when notifications have been\n * retrieved and added to the DOM\n */\n NotificationPopoverController.prototype.loadMoreNotifications = function() {\n if (this.isLoading || this.hasLoadedAllContent()) {\n return $.Deferred().resolve();\n }\n\n this.startLoading();\n var request = {\n limit: this.limit,\n offset: this.getOffset(),\n useridto: this.userId,\n };\n\n var container = this.getContent();\n return NotificationRepo.query(request).then(function(result) {\n var notifications = result.notifications;\n this.unreadCount = result.unreadcount;\n this.lastQueried = Math.floor(new Date().getTime() / 1000);\n this.setLoadedAllContent(!notifications.length || notifications.length < this.limit);\n this.initialLoad = true;\n this.updateButtonAriaLabel();\n\n if (notifications.length) {\n this.incrementOffset();\n return this.renderNotifications(notifications, container);\n }\n\n return false;\n }.bind(this))\n .always(function() {\n this.stopLoading();\n }.bind(this));\n };\n\n /**\n * Send a request to the server to mark all unread notifications as read and update\n * the unread count and unread notification elements appropriately.\n *\n * @return {Promise}\n * @method markAllAsRead\n */\n NotificationPopoverController.prototype.markAllAsRead = function() {\n this.markAllReadButton.addClass('loading');\n\n var request = {\n useridto: this.userId,\n timecreatedto: this.lastQueried,\n };\n\n return NotificationRepo.markAllAsRead(request)\n .then(function() {\n this.unreadCount = 0;\n this.root.find(SELECTORS.UNREAD_NOTIFICATION).removeClass('unread');\n }.bind(this))\n .always(function() {\n this.markAllReadButton.removeClass('loading');\n }.bind(this));\n };\n\n /**\n * Add all of the required event listeners for this notification popover.\n *\n * @method registerEventListeners\n */\n NotificationPopoverController.prototype.registerEventListeners = function() {\n CustomEvents.define(this.root, [\n CustomEvents.events.activate,\n ]);\n\n // Mark all notifications read if the user activates the mark all as read button.\n this.root.on(CustomEvents.events.activate, SELECTORS.MARK_ALL_READ_BUTTON, function(e, data) {\n this.markAllAsRead();\n e.stopPropagation();\n data.originalEvent.preventDefault();\n }.bind(this));\n\n // Mark individual notification read if the user activates it.\n this.root.on(CustomEvents.events.activate, SELECTORS.NOTIFICATION_LINK, function(e) {\n var element = $(e.target).closest(SELECTORS.NOTIFICATION);\n\n if (element.hasClass('unread')) {\n this.unreadCount--;\n element.removeClass('unread');\n }\n\n e.stopPropagation();\n }.bind(this));\n\n // Update the notification information when the menu is opened.\n this.root.on(this.events().menuOpened, function() {\n this.hideUnreadCount();\n this.updateButtonAriaLabel();\n\n if (!this.hasDoneInitialLoad()) {\n this.loadMoreNotifications();\n }\n }.bind(this));\n\n // Update the unread notification count when the menu is closed.\n this.root.on(this.events().menuClosed, function() {\n this.renderUnreadCount();\n this.updateButtonAriaLabel();\n }.bind(this));\n\n // Set aria attributes when popover is loading.\n this.root.on(this.events().startLoading, function() {\n this.getContent().attr('aria-busy', 'true');\n }.bind(this));\n\n // Set aria attributes when popover is finished loading.\n this.root.on(this.events().stopLoading, function() {\n this.getContent().attr('aria-busy', 'false');\n }.bind(this));\n\n // Load more notifications if the user has scrolled to the end of content\n // item list.\n this.getContentContainer().on(CustomEvents.events.scrollBottom, function() {\n if (!this.isLoading && !this.hasLoadedAllContent()) {\n this.loadMoreNotifications();\n }\n }.bind(this));\n\n // Stop mouse scroll from propagating to the window element and\n // scrolling the page.\n CustomEvents.define(this.getContentContainer(), [\n CustomEvents.events.scrollLock\n ]);\n\n // Listen for when a notification is shown in the notifications page and mark\n // it as read, if it's unread.\n $(document).on(NotificationAreaEvents.notificationShown, function(e, notification) {\n if (!notification.read) {\n var element = this.getNotificationElement(notification.id);\n\n if (element) {\n element.removeClass('unread');\n }\n\n this.unreadCount--;\n this.renderUnreadCount();\n }\n }.bind(this));\n };\n\n return NotificationPopoverController;\n});\n"],"file":"notification_popover_controller.min.js"}