Current File : /home/vacivi36/ava/lib/editor/tiny/plugins/autosave/amd/src/autosaver.js
// 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/>.
/**
* Storage helper for the Moodle Tiny Autosave plugin.
*
* @module tiny_autosave/plugin
* @copyright 2022 Andrew Lyons <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
import * as Options from './options';
import * as Storage from './storage';
import Log from 'core/log';
import {getLogSource} from './common';
export const register = (editor) => {
const undoHandler = () => {
if (!editor.undoManager.hasUndo()) {
Log.debug(`Ignoring undo event as there is no undo history`, getLogSource(editor));
return;
}
Storage.saveDraft(editor);
};
const visibilityChangedHandler = () => {
if (document.visibilityState === 'hidden') {
if (Options.isInitialised(editor)) {
Storage.saveDraft(editor);
}
}
};
// Attempt to store the draft one final time before the page unloads.
// Note: This may need to be sent as a beacon instead.
document.addEventListener('visibilitychange', visibilityChangedHandler);
// When the page is submitted as a form, remove the draft.
editor.on('submit', () => {
document.removeEventListener('visibilitychange', visibilityChangedHandler);
Storage.removeAutosaveSession(editor);
});
editor.on('init', () => {
// Setup the Undo handler.
editor.on('AddUndo', undoHandler);
if (editor.dom.isEmpty(editor.getBody())) {
Log.info(`Attempting to restore draft`, getLogSource(editor));
Storage.restoreDraft(editor);
} else {
// There was nothing to restore, so we can mark the editor as initialised.
Log.warn(`Skipping draft restoration. The editor is not empty.`, getLogSource(editor));
Options.markInitialised(editor);
}
});
};
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