{"version":3,"file":"browser_storage_set_up.min.js","sources":["https:\/\/kundenportal.comm-unity.at\/course\/format\/tiles\/amd\/src\/browser_storage_set_up.js"],"sourcesContent":["\/\/ 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 * Javascript Module to help set up user needs browser storage.\n *\n * @module format_tiles\/browser_storage_set_up\n * @copyright 2019 David Watson {@link http:\/\/evolutioncode.uk}\n * @license http:\/\/www.gnu.org\/copyleft\/gpl.html GNU GPL v3 or later\n * @since Moodle 3.3\n *\/\n\n\/* eslint space-before-function-paren: 0 *\/\n\ndefine([\"jquery\"], function ($) {\n    \"use strict\";\n\n    var storageUserConsent = {\n        GIVEN: \"yes\", \/\/ What to store in local storage to indicate consent granted.\n        DENIED: \"no\" \/\/ Or to indicate consent denied.\n    };\n\n    var localStorageKeyElements = {\n        userPrefStorage: \"mdl-tiles-userPrefStorage\",\n        user: \"-user-\"\n    };\n\n    var storageType = {\n        local: \"local\",\n        session: \"session\"\n    };\n\n    var Enabled = {\n        local: false,\n        session: false\n    };\n    var userId;\n\n    var userChoice = null; \/\/ The user's current choice - initially null as we have not yet checked local storage or asked user.\n\n    var encodeStorageKey = function() {\n        return localStorageKeyElements.userPrefStorage + localStorageKeyElements.user + userId;\n    };\n\n    var storageAllowed = function() {\n        if (userChoice !== null) {\n            return userChoice;\n        } else {\n            var browserChoice = localStorage.getItem(encodeStorageKey());\n            if (browserChoice) {\n                userChoice = browserChoice === storageUserConsent.GIVEN;\n                return userChoice;\n            } else {\n                \/\/ This shouldn't happen much as user asked for pref if not present.\n                return null;\n            }\n        }\n    };\n\n    var setAllowed = function(allowedOrNot) {\n        if (allowedOrNot) {\n            userChoice = true;\n            localStorage.setItem(encodeStorageKey(), storageUserConsent.GIVEN);\n        } else {\n            userChoice = false;\n            localStorage.setItem(encodeStorageKey(), storageUserConsent.DENIED);\n        }\n    };\n\n    \/**\n     * Launch the window enabling the user to select whether we want to store data locally or not\n     *\/\n    var obtainUserPreference = function () {\n        require([\"core\/str\", \"core\/notification\"], function(str, Notification) {\n            str.get_strings([\n                {key: \"datapref\", component: \"format_tiles\"},\n                {key: \"dataprefquestion\", component: \"format_tiles\"},\n                {key: \"yes\"},\n                {key: \"cancel\", component: \"moodle\"}\n            ]).done(function (s) {\n                Notification.confirm(\n                    s[0],\n                    s[1],\n                    s[2],\n                    s[3],\n                    function() {\n                        setAllowed(true);\n                    },\n                    function() {\n                        setAllowed(false);\n                    }\n                );\n            });\n        });\n    };\n\n    \/**\n     * Check if the user's browser supports localstorage or session storage\n     * @param {String} localOrSession the type of storage we wish to check\n     * @returns {boolean} whether or not storage is supported\n     *\/\n    var storageInitialCheck = function (localOrSession) {\n        var storage;\n        try {\n            if (localOrSession === storageType.local) {\n                storage = localStorage;\n            } else if (localOrSession === storageType.session) {\n                storage = sessionStorage;\n            }\n            if (typeof storage === \"undefined\") {\n                return false;\n            }\n            storage.setItem(\"testItem\", \"testValue\");\n            if (storage.getItem(\"testItem\") === \"testValue\") {\n                storage.removeItem(\"testItem\");\n                return true;\n            }\n            return false;\n        } catch (err) {\n            require([\"core\/log\"], function(log) {\n                log.debug(err);\n            });\n            return false;\n        }\n    };\n\n    return {\n\n        setAllowed: function(allowedOrNot) {\n            setAllowed(allowedOrNot);\n        },\n        storageAllowed: function() {\n            return storageAllowed();\n        },\n        getStorageKey: function() {\n            return encodeStorageKey();\n        },\n        Enabled: Enabled,\n\n        init: function(userIdInit, assumeConsent) {\n            userId = userIdInit;\n            $(document).ready(function () {\n                Enabled.local = storageInitialCheck(storageType.local);\n                Enabled.session = storageInitialCheck(storageType.session);\n\n                if (assumeConsent) {\n                    userChoice = true;\n                } else if (storageAllowed() === null && Enabled.local) {\n                    \/\/ We wait 3 seconds before launching the dialog to ensure content finished loading.\n                    setTimeout(function() {\n                        obtainUserPreference();\n                    }, 3000);\n                }\n\n                \/\/ If the user clicks the \"Data preference\" item in the navigation menu,\n                \/\/ show them the dialogue box to re-enter their local storage choice.\n                $('a[href*=\"datapref\"]').click(function (e) {\n                    e.preventDefault();\n                    obtainUserPreference();\n                });\n            });\n        }\n    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