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TiddlyWiki5/core/modules/savers/put.js
2016-02-15 15:20:30 -08:00

74 lines
1.7 KiB
JavaScript

/*\
title: $:/core/modules/savers/put.js
type: application/javascript
module-type: saver
Saves wiki by performing a PUT request to the server
Works with any server which accepts a PUT request
to the current URL, such as a WebDAV server.
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
/*
Select the appropriate saver module and set it up
*/
var PutSaver = function(wiki) {
this.wiki = wiki;
};
PutSaver.prototype.save = function(text,method,callback) {
var req = new XMLHttpRequest();
// TODO: store/check ETags if supported by server, to protect against overwrites
// Prompt: Do you want to save over this? Y/N
// Merging would be ideal, and may be possible using future generic merge flow
req.addEventListener("load", function() {
if (this.status === 200 || this.status === 201) {
// success
callback(null);
}
else {
// fail
callback(this.responseText);
}
});
req.open("PUT", encodeURI(window.location.href));
req.setRequestHeader("Content-Type", "text/html;charset=UTF-8");
req.send(text);
return true;
};
/*
Information about this saver
*/
PutSaver.prototype.info = {
name: "put",
priority: 2000,
capabilities: ["save", "autosave"]
};
/*
Static method that returns true if this saver is capable of working
*/
exports.canSave = function(wiki) {
// TODO This should probe for the DAV header
// http://www.webdav.org/specs/rfc2518.html#rfc.section.9.1
// but doing so would require canSave to resolve async. See
// https://github.com/Jermolene/TiddlyWiki5/issues/2276
return /^https?:/.test(location.protocol);
};
/*
Create an instance of this saver
*/
exports.create = function(wiki) {
return new PutSaver(wiki);
};
})();