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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
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/**
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 * Request actions.
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 *
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 * @module     tool_dataprivacy/data_deletion
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 * @copyright  2018 Jun Pataleta
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 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
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 */
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define([
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    'jquery',
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    'core/ajax',
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    'core/notification',
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    'core/str',
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    'core/modal_save_cancel',
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    'core/modal_events'],
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function($, Ajax, Notification, Str, ModalSaveCancel, ModalEvents) {
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    /**
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     * List of action selectors.
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     *
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     * @type {{MARK_FOR_DELETION: string}}
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     * @type {{SELECT_ALL: string}}
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     */
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    var ACTIONS = {
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        MARK_FOR_DELETION: '[data-action="markfordeletion"]',
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        SELECT_ALL: '[data-action="selectall"]',
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    };
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    /**
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     * List of selectors.
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     *
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     * @type {{SELECTCONTEXT: string}}
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     */
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    var SELECTORS = {
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        SELECTCONTEXT: '.selectcontext',
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    };
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    /**
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     * DataDeletionActions class.
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     */
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    var DataDeletionActions = function() {
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        this.registerEvents();
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    };
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    /**
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     * Register event listeners.
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     */
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    DataDeletionActions.prototype.registerEvents = function() {
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        $(ACTIONS.MARK_FOR_DELETION).click(function(e) {
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            e.preventDefault();
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            var selectedIds = [];
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            $(SELECTORS.SELECTCONTEXT).each(function() {
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                var checkbox = $(this);
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                if (checkbox.is(':checked')) {
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                    selectedIds.push(checkbox.val());
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                }
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            });
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            showConfirmation(selectedIds);
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        });
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        $(ACTIONS.SELECT_ALL).change(function(e) {
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            e.preventDefault();
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            var selectallnone = $(this);
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            if (selectallnone.is(':checked')) {
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                $(SELECTORS.SELECTCONTEXT).attr('checked', 'checked');
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            } else {
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                $(SELECTORS.SELECTCONTEXT).removeAttr('checked');
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            }
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        });
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    };
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    /**
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     * Show the confirmation dialogue.
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     *
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     * @param {Array} ids The array of expired context record IDs.
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     */
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    function showConfirmation(ids) {
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        var keys = [
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            {
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                key: 'confirm',
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                component: 'moodle'
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            },
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            {
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                key: 'confirmcontextdeletion',
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                component: 'tool_dataprivacy'
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            }
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        ];
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        var wsfunction = 'tool_dataprivacy_confirm_contexts_for_deletion';
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        var modalTitle = '';
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        Str.get_strings(keys).then(function(langStrings) {
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            modalTitle = langStrings[0];
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            var confirmMessage = langStrings[1];
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            return ModalSaveCancel.create({
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                title: modalTitle,
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                body: confirmMessage,
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            });
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        }).then(function(modal) {
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            modal.setSaveButtonText(modalTitle);
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            // Handle save event.
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            modal.getRoot().on(ModalEvents.save, function() {
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                // Confirm the request.
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                var params = {
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                    'ids': ids
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                };
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                var request = {
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                    methodname: wsfunction,
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                    args: params
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                };
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                Ajax.call([request])[0].done(function(data) {
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                    if (data.result) {
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                        window.location.reload();
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                    } else {
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                        Notification.addNotification({
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                            message: data.warnings[0].message,
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                            type: 'error'
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                        });
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                    }
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                }).fail(Notification.exception);
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            });
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            // Handle hidden event.
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            modal.getRoot().on(ModalEvents.hidden, function() {
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                // Destroy when hidden.
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                modal.destroy();
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            });
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            return modal;
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        }).done(function(modal) {
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            modal.show();
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        }).fail(Notification.exception);
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    }
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    return DataDeletionActions;
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});