/**
* plugin.js
*
* Copyright, Moxiecode Systems AB
* Released under LGPL License.
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
/*global tinymce:true */
tinymce.PluginManager.add('autosave', function(editor) {
var settings = editor.settings, LocalStorage = tinymce.util.LocalStorage, prefix, started;
prefix = settings.autosave_prefix || 'tinymce-autosave-{path}{query}-{id}-';
prefix = prefix.replace(/\{path\}/g, document.location.pathname);
prefix = prefix.replace(/\{query\}/g, document.location.search);
prefix = prefix.replace(/\{id\}/g, editor.id);
function parseTime(time, defaultTime) {
var multipels = {
s: 1000,
m: 60000
};
time = /^(\d+)([ms]?)$/.exec('' + (time || defaultTime));
return (time[2] ? multipels[time[2]] : 1) * parseInt(time, 10);
}
function hasDraft() {
var time = parseInt(LocalStorage.getItem(prefix + "time"), 10) || 0;
if (new Date().getTime() - time > settings.autosave_retention) {
removeDraft(false);
return false;
}
return true;
}
function removeDraft(fire) {
LocalStorage.removeItem(prefix + "draft");
LocalStorage.removeItem(prefix + "time");
if (fire !== false) {
editor.fire('RemoveDraft');
}
}
function storeDraft() {
if (!isEmpty() && editor.isDirty()) {
LocalStorage.setItem(prefix + "draft", editor.getContent({format: 'raw', no_events: true}));
LocalStorage.setItem(prefix + "time", new Date().getTime());
editor.fire('StoreDraft');
}
}
function restoreDraft() {
if (hasDraft()) {
editor.setContent(LocalStorage.getItem(prefix + "draft"), {format: 'raw'});
editor.fire('RestoreDraft');
}
}
function startStoreDraft() {
if (!started) {
setInterval(function() {
if (!editor.removed) {
storeDraft();
}
}, settings.autosave_interval);
started = true;
}
}
settings.autosave_interval = parseTime(settings.autosave_interval, '30s');
settings.autosave_retention = parseTime(settings.autosave_retention, '20m');
function postRender() {
var self = this;
self.disabled(!hasDraft());
editor.on('StoreDraft RestoreDraft RemoveDraft', function() {
self.disabled(!hasDraft());
});
startStoreDraft();
}
function restoreLastDraft() {
editor.undoManager.beforeChange();
restoreDraft();
removeDraft();
editor.undoManager.add();
}
editor.addButton('restoredraft', {
title: 'Restore last draft',
onclick: restoreLastDraft,
onPostRender: postRender
});
editor.addMenuItem('restoredraft', {
text: 'Restore last draft',
onclick: restoreLastDraft,
onPostRender: postRender,
context: 'file'
});
// Internal unload handler will be called before the page is unloaded
function beforeUnloadHandler() {
var msg;
tinymce.each(tinymce.editors, function(editor) {
// Store a draft for each editor instance
if (editor.plugins.autosave) {
editor.plugins.autosave.storeDraft();
}
// Setup a return message if the editor is dirty
if (!msg && editor.isDirty() && editor.getParam("autosave_ask_before_unload", true)) {
msg = editor.translate("You have unsaved changes are you sure you want to navigate away?");
}
});
return msg;
}
function isEmpty(html) {
var forcedRootBlockName = editor.settings.forced_root_block;
html = tinymce.trim(typeof(html) == "undefined" ? editor.getBody().innerHTML : html);
return html === '' || new RegExp(
'^<' + forcedRootBlockName + '[^>]*>((\u00a0| |[ \t]|]*>)+?|)<\/' + forcedRootBlockName + '>|
$', 'i'
).test(html);
}
if (editor.settings.autosave_restore_when_empty !== false) {
editor.on('init', function() {
if (hasDraft() && isEmpty()) {
restoreDraft();
}
});
editor.on('saveContent', function() {
removeDraft();
});
}
window.onbeforeunload = beforeUnloadHandler;
this.hasDraft = hasDraft;
this.storeDraft = storeDraft;
this.restoreDraft = restoreDraft;
this.removeDraft = removeDraft;
this.isEmpty = isEmpty;
});