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comparison src/development/plugins/autosave.js @ 0:4c4fc447baea

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start with sceditor-3.1.1
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 04 Aug 2022 15:21:29 -0600
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-1:000000000000 0:4c4fc447baea
1 /**
2 * SCEditor AutoSave Plugin
3 * http://www.sceditor.com/
4 *
5 * Copyright (C) 2017, Sam Clarke (samclarke.com)
6 *
7 * SCEditor is licensed under the MIT license:
8 * http://www.opensource.org/licenses/mit-license.php
9 *
10 * @author Sam Clarke
11 */
12 (function (sceditor) {
13 'use strict';
14
15 var defaultKey = 'sce-autodraft-' + location.pathname + location.search;
16
17 function clear(key) {
18 localStorage.removeItem(key || defaultKey);
19 }
20
21 sceditor.plugins.autosave = function () {
22 var base = this;
23 var editor;
24 var isLoading = false;
25 var storageKey = defaultKey;
26 // 86400000 = 24 hrs (24 * 60 * 60 * 1000)
27 var expires = 86400000;
28 var saveHandler = function (value) {
29 localStorage.setItem(storageKey, JSON.stringify(value));
30 };
31 var loadHandler = function () {
32 return JSON.parse(localStorage.getItem(storageKey));
33 };
34
35 function gc() {
36 for (var i = 0; i < localStorage.length; i++) {
37 var key = localStorage.key(i);
38
39 if (/^sce\-autodraft\-/.test(key)) {
40 var item = JSON.parse(localStorage.getItem(storageKey));
41 if (item && item.time < Date.now() - expires) {
42 clear(key);
43 }
44 }
45 }
46 }
47
48 base.init = function () {
49 editor = this;
50 var opts = editor.opts && editor.opts.autosave || {};
51
52 saveHandler = opts.save || saveHandler;
53 loadHandler = opts.load || loadHandler;
54 storageKey = opts.storageKey || storageKey;
55 expires = opts.expires || expires;
56
57 gc();
58 };
59
60 base.signalReady = function () {
61 // Add submit event listener to clear autosave
62 var parent = editor.getContentAreaContainer();
63 while (parent) {
64 if (/form/i.test(parent.nodeName)) {
65 parent.addEventListener(
66 'submit', clear.bind(null, storageKey), true
67 );
68 break;
69 }
70
71 parent = parent.parentNode;
72 }
73
74 var state = loadHandler();
75 if (state) {
76 isLoading = true;
77 editor.sourceMode(state.sourceMode);
78 editor.val(state.value, false);
79 editor.focus();
80
81 if (state.sourceMode) {
82 editor.sourceEditorCaret(state.caret);
83 } else {
84 editor.getRangeHelper().restoreRange();
85 }
86 isLoading = false;
87 } else {
88 saveHandler({
89 caret: this.sourceEditorCaret(),
90 sourceMode: this.sourceMode(),
91 value: editor.val(null, false),
92 time: Date.now()
93 });
94 }
95 };
96
97 base.signalValuechangedEvent = function (e) {
98 if (!isLoading) {
99 saveHandler({
100 caret: this.sourceEditorCaret(),
101 sourceMode: this.sourceMode(),
102 value: e.detail.rawValue,
103 time: Date.now()
104 });
105 }
106 };
107 };
108
109 sceditor.plugins.autosave.clear = clear;
110 }(sceditor));