Proyectos de Subversion Moodle

// This file is part of Moodle - http://moodle.org/

//

// Moodle is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// Moodle is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.

/**

 * @copyright  2015 Martin Mastny <mastnym@vscht.cz>

 * @since      3.0

 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

 */

 /**

  * @module core/permissionmanager

  */

define(['jquery', 'core/config', 'core/notification', 'core/templates', 'core/yui'],

    function($, config, notification, templates, Y) {

     /**

      * Used CSS selectors

      * @access private

      */

    var SELECTORS = {

        ADDROLE: 'a.allowlink, a.prohibitlink',

        REMOVEROLE: 'a.preventlink, a.unprohibitlink',

        UNPROHIBIT: 'a.unprohibitlink'

        };

    var rolesloadedevent = $.Event('rolesloaded');

    var contextid;

    var contextname;

    var adminurl;

    var overideableroles;

    var panel = null;

    /**

     * Load all possible roles, which could be assigned from server

     *

     * @access private

     * @method loadOverideableRoles

     */

    var loadOverideableRoles = function() {

        var params = {

            contextid: contextid,

            getroles: 1,

            sesskey: config.sesskey

        };

        // Need to tell jQuery to expect JSON as the content type may not be correct (MDL-55041).

        $.post(adminurl + 'roles/ajax.php', params, null, 'json')

            .done(function(data) {

              try {

                  overideableroles = data;

                  loadOverideableRoles = function() {

                      $('body').trigger(rolesloadedevent);

                  };

                  loadOverideableRoles();

              } catch (err) {

                  notification.exception(err);

              }

            })

            .fail(function(jqXHR, status, error) {

                notification.exception(error);

            });

    };

    /**

     * Perform the UI changes after server change

     *

     * @access private

     * @method changePermissions

     * @param {JQuery} row

     * @param {int} roleid

     * @param {string} action

     */

    var changePermissions = function(row, roleid, action) {

        var params = {

            contextid: contextid,

            roleid: roleid,

            sesskey: M.cfg.sesskey,

            action: action,

            capability: row.data('name')

        };

        $.post(adminurl + 'roles/ajax.php', params, null, 'json')

        .done(function(data) {

            var action = data;

            try {

                var templatedata = {rolename: overideableroles[roleid],

                                    roleid: roleid,

                                    adminurl: adminurl,

                                    imageurl: M.util.image_url('t/delete', 'moodle')

                                    };

                switch (action) {

                    case 'allow':

                        templatedata.spanclass = 'allowed';

                        templatedata.linkclass = 'preventlink';

                        templatedata.action = 'prevent';

                        templatedata.icon = 't/delete';

                        templatedata.iconalt = M.util.get_string('deletexrole', 'core_role', overideableroles[roleid]);

                        break;

                    case 'prohibit':

                        templatedata.spanclass = 'forbidden';

                        templatedata.linkclass = 'unprohibitlink';

                        templatedata.action = 'unprohibit';

                        templatedata.icon = 't/delete';

                        templatedata.iconalt = M.util.get_string('deletexrole', 'core_role', overideableroles[roleid]);

                        break;

                    case 'prevent':

                        row.find('a[data-role-id="' + roleid + '"]').first().closest('.allowed').remove();

                        return;

                    case 'unprohibit':

                        row.find('a[data-role-id="' + roleid + '"]').first().closest('.forbidden').remove();

                        return;

                    default:

                        return;

                }

                templates.render('core/permissionmanager_role', templatedata)

                .done(function(content) {

                    if (action == 'allow') {

                        $(content).insertBefore(row.find('.allowmore').first());

                    } else if (action == 'prohibit') {

                        $(content).insertBefore(row.find('.prohibitmore').first());

                        // Remove allowed link

                        var allowedLink = row.find('.allowedroles').first().find('a[data-role-id="' + roleid + '"]');

                        if (allowedLink) {

                            allowedLink.first().closest('.allowed').remove();

                        }

                    }

                    panel.hide();

                })

                .fail(notification.exception);

            } catch (err) {

                notification.exception(err);

            }

        })

        .fail(function(jqXHR, status, error) {

            notification.exception(error);

        });

    };

    /**

     * Prompts user for selecting a role which is permitted

     *

     * @access private

     * @method handleAddRole

     * @param {event} e

     */

    var handleAddRole = function(e) {

        e.preventDefault();

        var link = $(e.currentTarget);

        // TODO: MDL-57778 Convert to core/modal.

        $('body').one('rolesloaded', function() {

            Y.use('moodle-core-notification-dialogue', function() {

                var action = link.data('action');

                var row = link.closest('tr.rolecap');

                var confirmationDetails = {

                    cap: row.data('humanname'),

                    context: contextname

                };

                var message = M.util.get_string('role' + action + 'info', 'core_role', confirmationDetails);

                if (panel === null) {

                    panel = new M.core.dialogue({

                        draggable: true,

                        modal: true,

                        closeButton: true,

                        width: '450px'

                    });

                }

                panel.set('headerContent', M.util.get_string('role' + action + 'header', 'core_role'));

                var i, existingrolelinks;

                var roles = [];

                switch (action) {

                    case 'allow':

                        existingrolelinks = row.find(SELECTORS.REMOVEROLE);

                        break;

                    case 'prohibit':

                        existingrolelinks = row.find(SELECTORS.UNPROHIBIT);

                        break;

                }

                for (i in overideableroles) {

                    var disabled = '';

                    var disable = existingrolelinks.filter("[data-role-id='" + i + "']").length;

                    if (disable) {

                        disabled = 'disabled';

                    }

                    var roledetails = {roleid: i, rolename: overideableroles[i], disabled: disabled};

                    roles.push(roledetails);

                }

                templates.render('core/permissionmanager_panelcontent', {message: message, roles: roles})

                .done(function(content) {

                    panel.set('bodyContent', content);

                    panel.show();

                    $('div.role_buttons').on('click', 'button', function(e) {

                        var roleid = $(e.currentTarget).data('role-id');

                        changePermissions(row, roleid, action);

                    });

                })

                .fail(notification.exception);

            });

        });

        loadOverideableRoles();

    };

    /**

     * Prompts user when removing permission

     *

     * @access private

     * @method handleRemoveRole

     * @param {event} e

     */

    var handleRemoveRole = function(e) {

        e.preventDefault();

        var link = $(e.currentTarget);

        $('body').one('rolesloaded', function() {

            var action = link.data('action');

            var roleid = link.data('role-id');

            var row = link.closest('tr.rolecap');

            var questionDetails = {

                role: overideableroles[roleid],

                cap: row.data('humanname'),

                context: contextname

            };

            notification.confirm(M.util.get_string('confirmunassigntitle', 'core_role'),

                M.util.get_string('confirmrole' + action, 'core_role', questionDetails),

                M.util.get_string('confirmunassignyes', 'core_role'),

                M.util.get_string('confirmunassignno', 'core_role'),

                function() {

                   changePermissions(row, roleid, action);

                }

            );

         });

        loadOverideableRoles();

    };

    return /** @alias module:core/permissionmanager */ {

        /**

         * Initialize permissionmanager

         * @access public

         * @param {Object} args

         */

        initialize: function(args) {

            contextid = args.contextid;

            contextname = args.contextname;

            adminurl = args.adminurl;

            var body = $('body');

            body.on('click', SELECTORS.ADDROLE, handleAddRole);

            body.on('click', SELECTORS.REMOVEROLE, handleRemoveRole);

        }

    };

});