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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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* Storage helper for the Moodle Tiny Autosave plugin.
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*
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* @module tiny_autosave/storage
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* @copyright 2022 Andrew Lyons <andrew@nicols.co.uk>
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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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import * as Repository from "./repository";
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import Pending from 'core/pending';
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import {
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markInitialised,
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getBackoffTime,
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} from "./options";
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import Log from 'core/log';
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import {getLogSource} from './common';
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/** @property {Map} A map of debounced draft saves */
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const saveDebounceMap = new Map();
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/**
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* Attempt to restore a draft into the editor
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*
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* @param {TinyMCE} editor The Editor to restore a draft for
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*/
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export const restoreDraft = async(editor) => {
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const pendingPromise = new Pending('tiny_autosave/restoreDraft');
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try {
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const session = await Repository.resumeAutosaveSession(editor);
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if (session && session.drafttext) {
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editor.undoManager.ignore(() => {
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editor.setContent(session.drafttext);
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editor.save();
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});
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}
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} catch (error) {
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// Ignore any errors as drafts are optional.
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Log.warn(`Failed to restore draft: ${error}`, getLogSource(editor));
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}
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markInitialised(editor);
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pendingPromise.resolve();
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};
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/**
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* Save the current content of the editor as a draft.
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*
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* @param {TinyMCE} editor
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*/
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export const saveDraft = (editor) => {
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const timerId = saveDebounceMap.get(editor);
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if (timerId) {
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clearTimeout(timerId);
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}
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saveDebounceMap.set(editor, setTimeout(() => {
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Log.debug(`Saving draft`, getLogSource(editor));
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Repository.updateAutosaveSession(editor)
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.catch((error) => window.console.warn(error));
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}, getBackoffTime(editor)));
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};
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/**
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* Delete the draft for the current editor.
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*
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* @param {TinyMCE} editor
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*/
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export const removeAutosaveSession = (editor) => {
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Log.debug(`Removing Autosave session`, getLogSource(editor));
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Repository.removeAutosaveSession(editor);
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};
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