webdav experiments

Makefile

@@ -25,6 +25,7 @@ SOURCES =	src/mm.js \
 			src/format.mup.js \
 			src/backend.js \
 			src/backend.local.js \
+			src/backend.webdav.js \
 			src/backend.image.js \
 			src/backend.file.js \
 			src/backend.firebase.js \
@@ -39,6 +40,7 @@ SOURCES =	src/mm.js \
 			src/ui.io.js \
 			src/ui.backend.js \
 			src/ui.backend.file.js \
+			src/ui.backend.webdav.js \
 			src/ui.backend.image.js \
 			src/ui.backend.local.js \
 			src/ui.backend.firebase.js \

src/backend.webdav.js

@@ -0,0 +1,18 @@
+MM.Backend.WebDAV = Object.create(MM.Backend, {
+	id: {value: "webdav"},
+	label: {value: "WebDAV"}
+});
+
+MM.Backend.WebDAV.save = function(data, url) {
+	return this._request("post", url, data);
+}
+
+MM.Backend.WebDAV.load = function(url) {
+	return this._request("get", url);
+}
+
+MM.Backend.WebDAV._request = function(method, url, data) {
+	var xhr = new XMLHttpRequest();
+	xhr.open(method, url, true);
+	return Promise.send(xhr, data);
+}

src/ui.backend.webdav.js

@@ -0,0 +1,49 @@
+MM.UI.Backend.WebDAV = Object.create(MM.UI.Backend, {
+	id: {value: "webdav"}
+});
+
+MM.UI.Backend.WebDAV.init = function(select) {
+	MM.UI.Backend.init.call(this, select);
+
+	this._url = this._node.querySelector(".url");
+	this._url.value = localStorage.getItem(this._prefix + "url") || "";
+}
+
+MM.UI.Backend.WebDAV._action = function() {
+	localStorage.setItem(this._prefix + "url", this._url.value);
+
+	MM.UI.Backend._action.call(this);
+}
+
+MM.UI.Backend.WebDAV.save = function() {
+	MM.App.setThrobber(true);
+
+	var map = MM.App.map;
+	var url = this._url.value;
+	if (url.charCodeAt(url.length-1) != "/") { url += "/"; }
+	url += map.getName() + MM.Format.JSON.extension;
+
+	this._backend.save(map.toJSON(), url).then(
+		this._saveDone.bind(this),
+		this._error.bind(this)
+	);
+}
+
+MM.UI.Backend.WebDAV.load = function() {
+	MM.App.setThrobber(true);
+
+	this._backend.load().then(
+		this._loadDone.bind(this),
+		this._error.bind(this)
+	);
+}
+
+MM.UI.Backend.File._loadDone = function(xhr) {
+	try {
+		var json = MM.Format.JSON.from(xhr.responseText);
+	} catch (e) { 
+		this._error(e);
+	}
+
+	MM.UI.Backend._loadDone.call(this, json);
+}

src/ui.io.js

@@ -7,7 +7,7 @@ MM.UI.IO = function() {
 	this._backend = this._node.querySelector("#backend");
 	this._currentBackend = null;
 	this._backends = {};
-	var ids = ["local", "firebase", "gdrive", "file", "image"];
+	var ids = ["local", "firebase", "gdrive", "file", "webdav", "image"];
 	ids.forEach(function(id) {
 		var ui = MM.UI.Backend.getById(id);
 		ui.init(this._backend);
@@ -29,6 +29,9 @@ MM.UI.IO.prototype.restore = function() {
 		parts[decodeURIComponent(keyvalue[0])] = decodeURIComponent(keyvalue[1]);
 	});
 
+	/* just URL means webdav backend */
+	if ("url" in parts && !("b" in parts)) { parts.b = "webdav"; }
+
 	var backend = MM.UI.Backend.getById(parts.b);
 	if (backend) { /* saved backend info */
 		backend.setState(parts);