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+                    GNU AFFERO GENERAL PUBLIC LICENSE
+                       Version 3, 19 November 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU Affero General Public License is a free, copyleft license for
+software and other kinds of works, specifically designed to ensure
+cooperation with the community in the case of network server software.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+our General Public Licenses are intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  Developers that use our General Public Licenses protect your rights
+with two steps: (1) assert copyright on the software, and (2) offer
+you this License which gives you legal permission to copy, distribute
+and/or modify the software.
+
+  A secondary benefit of defending all users' freedom is that
+improvements made in alternate versions of the program, if they
+receive widespread use, become available for other developers to
+incorporate.  Many developers of free software are heartened and
+encouraged by the resulting cooperation.  However, in the case of
+software used on network servers, this result may fail to come about.
+The GNU General Public License permits making a modified version and
+letting the public access it on a server without ever releasing its
+source code to the public.
+
+  The GNU Affero General Public License is designed specifically to
+ensure that, in such cases, the modified source code becomes available
+to the community.  It requires the operator of a network server to
+provide the source code of the modified version running there to the
+users of that server.  Therefore, public use of a modified version, on
+a publicly accessible server, gives the public access to the source
+code of the modified version.
+
+  An older license, called the Affero General Public License and
+published by Affero, was designed to accomplish similar goals.  This is
+a different license, not a version of the Affero GPL, but Affero has
+released a new version of the Affero GPL which permits relicensing under
+this license.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                       TERMS AND CONDITIONS
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+  "This License" refers to version 3 of the GNU Affero General Public License.
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Affero General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program 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 Affero General Public License for more details.
+
+    You should have received a copy of the GNU Affero General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If your software can interact with users remotely through a computer
+network, you should also make sure that it provides a way for users to
+get its source.  For example, if your program is a web application, its
+interface could display a "Source" link that leads users to an archive
+of the code.  There are many ways you could offer source, and different
+solutions will be better for different programs; see section 13 for the
+specific requirements.
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU AGPL, see
+<http://www.gnu.org/licenses/>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..5ca6023
--- /dev/null
+++ b/README.md
@@ -0,0 +1,4 @@
+# Web interface for Radicale
+## Installation
+
+    pip3 install --upgrade git+https://github.com/Unrud/RadicaleWeb
diff --git a/radicale_web/__init__.py b/radicale_web/__init__.py
new file mode 100644
index 0000000..13aecd4
--- /dev/null
+++ b/radicale_web/__init__.py
@@ -0,0 +1,74 @@
+# This file is part of Radicale Web.
+# Copyright © 2017 Unrud <unrud@openaliasbox.org>
+#
+# Radicale Web is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# Radicale Web 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 Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with Radicale Web.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import posixpath
+import radicale
+import time
+
+from http import client
+
+VERSION = "2.0.0"
+
+MIMETYPES = {
+    ".css": "text/css",
+    ".eot": "application/vnd.ms-fontobject",
+    ".gif": "image/gif",
+    ".html": "text/html",
+    ".js": "application/javascript",
+    ".manifest": "text/cache-manifest",
+    ".png": "image/png",
+    ".svg": "image/svg+xml",
+    ".ttf": "application/font-sfnt",
+    ".txt": "text/plain",
+    ".woff": "application/font-woff",
+    ".woff2": "font/woff2",
+    ".xml": "text/xml"}
+FALLBACK_MIMETYPE = "application/octet-stream"
+
+class Web:
+    def __init__(self, configuration, logger):
+        self.configuration = configuration
+        self.logger = logger
+        self.folder = os.path.join(os.path.dirname(__file__), "web")
+
+    def get(self, environ, base_prefix, path, user):
+        try:
+            filesystem_path = radicale.storage.path_to_filesystem(
+                self.folder, path[len("/.web"):])
+        except ValueError as e:
+            self.logger.debug(e)
+            return radicale.NOT_FOUND
+        if os.path.isdir(filesystem_path) and not path.endswith("/"):
+            location = posixpath.basename(path) + "/"
+            return (client.SEE_OTHER,
+                    {"Location": location, "Content-Type": "text/plain"},
+                    "Redirected to %s" % location)
+        if os.path.isdir(filesystem_path):
+            filesystem_path = os.path.join(filesystem_path, "index.html")
+        if not os.path.isfile(filesystem_path):
+            return radicale.NOT_FOUND
+        content_type = MIMETYPES.get(
+            os.path.splitext(filesystem_path)[1].lower(), FALLBACK_MIMETYPE)
+        with open(filesystem_path, "rb") as f:
+            answer = f.read()
+            last_modified = time.strftime(
+                "%a, %d %b %Y %H:%M:%S GMT",
+                time.gmtime(os.fstat(f.fileno()).st_mtime))
+        headers = {
+            "Content-Type": content_type,
+            "Last-Modified": last_modified}
+        return client.OK, headers, answer
diff --git a/radicale_web/web/css/fonts.css b/radicale_web/web/css/fonts.css
new file mode 100644
index 0000000..297998e
--- /dev/null
+++ b/radicale_web/web/css/fonts.css
@@ -0,0 +1,12 @@
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 300;
+  src: local('Roboto Light'), local('Roboto-Light'), url(fonts/Roboto-Light.woff2) format('woff2');
+}
+@font-face {
+  font-family: 'Roboto';
+  font-style: normal;
+  font-weight: 400;
+  src: local('Roboto'), local('Roboto-Regular'), url(fonts/Roboto-Light.woff2) format('woff2');
+}
diff --git a/radicale_web/web/css/fonts/COPYRIGHT.txt b/radicale_web/web/css/fonts/COPYRIGHT.txt
new file mode 100644
index 0000000..e69c54c
--- /dev/null
+++ b/radicale_web/web/css/fonts/COPYRIGHT.txt
@@ -0,0 +1 @@
+Copyright 2011 Google Inc. All Rights Reserved.
diff --git a/radicale_web/web/css/fonts/LICENSE.txt b/radicale_web/web/css/fonts/LICENSE.txt
new file mode 100644
index 0000000..d645695
--- /dev/null
+++ b/radicale_web/web/css/fonts/LICENSE.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
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+
+      "Legal Entity" shall mean the union of the acting entity and all
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
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+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
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+      Contribution(s) alone or by combination of their Contribution(s)
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+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/radicale_web/web/css/fonts/Roboto-Light.woff2 b/radicale_web/web/css/fonts/Roboto-Light.woff2
new file mode 100644
index 0000000..2882017
--- /dev/null
+++ b/radicale_web/web/css/fonts/Roboto-Light.woff2
diff --git a/radicale_web/web/css/fonts/Roboto-Regular.woff2 b/radicale_web/web/css/fonts/Roboto-Regular.woff2
new file mode 100644
index 0000000..f966196
--- /dev/null
+++ b/radicale_web/web/css/fonts/Roboto-Regular.woff2
diff --git a/radicale_web/web/css/icon.png b/radicale_web/web/css/icon.png
new file mode 100644
index 0000000..a9c9c04
--- /dev/null
+++ b/radicale_web/web/css/icon.png
diff --git a/radicale_web/web/css/main.css b/radicale_web/web/css/main.css
new file mode 100644
index 0000000..7b8330b
--- /dev/null
+++ b/radicale_web/web/css/main.css
@@ -0,0 +1,44 @@
+@import url(fonts.css);
+body { background: #e4e9f6; color: #424247; display: flex; flex-direction: column; font-family: Roboto, sans; font-size: 14pt; line-height: 1.4; margin: 0; min-height: 100vh; }
+
+a { color: inherit; }
+
+nav, footer { background: #a40000; color: white; padding: 0 20%; }
+nav ul, footer ul { display: flex; flex-wrap: wrap; margin: 0; padding: 0; }
+nav ul li, footer ul li { display: block; padding: 0 1em 0 0; }
+nav ul li a, footer ul li a { color: inherit; display: block; padding: 1em 0.5em 1em 0; text-decoration: inherit; transition: 0.2s; }
+nav ul li a:hover, nav ul li a:focus, footer ul li a:hover, footer ul li a:focus { color: black; outline: none; }
+
+header { background: url(logo.svg), linear-gradient(to bottom right, #050a02, black); background-position: 22% 45%; background-repeat: no-repeat; color: #efdddd; font-size: 1.5em; min-height: 250px; overflow: auto; padding: 3em 22%; text-shadow: 0.2em 0.2em 0.2em rgba(0, 0, 0, 0.5); }
+header > * { padding-left: 220px; }
+header h1 { font-size: 2.5em; font-weight: lighter; margin: 0.5em 0; }
+
+main { flex: 1; }
+
+section { padding: 0 20% 2em; }
+section:not(:last-child) { border-bottom: 1px dashed #ccc; }
+section h1 { background: linear-gradient(to bottom right, #050a02, black); color: #e5dddd; font-size: 2.5em; margin: 0 -33.33% 1em; padding: 1em 33.33%; }
+section h2, section h3, section h4 { font-weight: lighter; margin: 1.5em 0 1em; }
+
+article { border-top: 1px solid transparent; position: relative; margin: 3em 0; }
+article aside { box-sizing: border-box; color: #aaa; font-size: 0.8em; right: -30%; top: 0.5em; position: absolute; }
+article:before { border-top: 1px dashed #ccc; content: ""; display: block; left: -33.33%; position: absolute; right: -33.33%; }
+
+pre { border-radius: 3px; background: black; color: #d3d5db; margin: 0 -1em; overflow-x: auto; padding: 1em; }
+
+table { border-collapse: collapse; font-size: 0.8em; margin: auto; }
+table td { border: 1px solid #ccc; padding: 0.5em; }
+
+dl dt { margin-bottom: 0.5em; margin-top: 1em; }
+
+@media (max-width: 800px) { body { font-size: 12pt; }
+  header, section { padding-left: 2em; padding-right: 2em; }
+  nav, footer { padding-left: 0; padding-right: 0; }
+  nav ul, footer ul { justify-content: center; }
+  nav ul li, footer ul li { padding: 0 0.5em; }
+  nav ul li a, footer ul li a { padding: 1em 0; }
+  header { background-position: 50% 30px, 0 0; padding-bottom: 0; padding-top: 330px; text-align: center; }
+  header > * { margin: 0; padding-left: 0; }
+  section h1 { margin: 0 -0.8em 1.3em; padding: 0.5em 0; text-align: center; }
+  article aside { top: 0.5em; right: -1.5em; }
+  article:before { left: -2em; right: -2em; } }
diff --git a/radicale_web/web/fn.js b/radicale_web/web/fn.js
new file mode 100644
index 0000000..9e258e5
--- /dev/null
+++ b/radicale_web/web/fn.js
@@ -0,0 +1,963 @@
+/**
+ * This file is part of Radicale Web.
+ * Copyright © 2017 Unrud <unrud@openaliasbox.org>
+ *
+ * Radicale Web is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * Radicale Web 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Radicale Web.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * Server address (must not end with /)
+ * @const
+ * @type {string}
+ */
+var SERVER = (location.protocol + '//' + location.hostname +
+              (location.port ? ':' + location.port : '') +
+              location.pathname.replace(new RegExp("/+[^/]+/*(/index\.html?)?$"), ""));
+
+/**
+ * time between updates of collections.
+ * @const
+ */
+var UPDATE_INTERVAL = 10000;
+
+/**
+ * Regex to match and normalize color
+ * @const
+ */
+var COLOR_RE = new RegExp("^(#[0-9A-Fa-f]{6})(?:[0-9A-Fa-f]{2})?$");
+
+/**
+ * Escape string for usage in XML
+ * @param {string} s
+ * @return {string}
+ */
+function escape_xml(s) {
+    return (s
+            .replace("&", "&amp;")
+            .replace('"', "&quot;")
+            .replace("'", "&apos;")
+            .replace("<", "&lt;")
+            .replace(">", "&gt;"));
+}
+
+/**
+ * @enum {string}
+ */
+var CollectionType = {
+    PRINCIPAL: "PRINCIPAL",
+    ADDRESSBOOK: "ADDRESSBOOK",
+    CALENDAR_JOURNAL_TASKS: "CALENDAR_JOURNAL_TASKS",
+    CALENDAR_JOURNAL: "CALENDAR_JOURNAL",
+    CALENDAR_TASKS: "CALENDAR_TASKS",
+    JOURNAL_TASKS: "JOURNAL_TASKS",
+    CALENDAR: "CALENDAR",
+    JOURNAL: "JOURNAL",
+    TASKS: "TASKS",
+    is_subset: function(a, b) {
+        var components = a.split("_");
+        var i;
+        for (i = 0; i < components.length; i++) {
+            if (b.search(components[i]) === -1) {
+                return false;
+            }
+        }
+        return true;
+    },
+    union: function(a, b) {
+        if (a.search(this.ADDRESSBOOK) !== -1 || b.search(this.ADDRESSBOOK) !== -1) {
+            if (a && a !== this.ADDRESSBOOK || b && b !== this.ADDRESSBOOK) {
+                throw "Invalid union: " + a + " " + b;
+            }
+            return this.ADDRESSBOOK;
+        }
+        var union = "";
+        if (a.search(this.CALENDAR) !== -1 || b.search(this.CALENDAR) !== -1) {
+            union += (union ? "_" : "") + this.CALENDAR;
+        }
+        if (a.search(this.JOURNAL) !== -1 || b.search(this.JOURNAL) !== -1) {
+            union += (union ? "_" : "") + this.JOURNAL;
+        }
+        if (a.search(this.TASKS) !== -1 || b.search(this.TASKS) !== -1) {
+            union += (union ? "_" : "") + this.TASKS;
+        }
+        return union;
+    }
+}
+
+/**
+ * @constructor
+ * @struct
+ * @param {string} href Must always start and end with /.
+ * @param {CollectionType} type
+ * @param {string} displayname
+ * @param {string} description
+ * @param {string} color
+ */
+function Collection(href, type, displayname, description, color) {
+    this.href = href;
+    this.type = type;
+    this.displayname = displayname;
+    this.color = color;
+    this.description = description;
+}
+
+/**
+ * Find the principal collection.
+ * @param {string} user
+ * @param {string} password
+ * @param {function(?Collection, ?string)} callback Returns result or error
+ * @return {XMLHttpRequest}
+ */
+function get_principal(user, password, callback) {
+    var request = new XMLHttpRequest();
+    request.open("PROPFIND", SERVER, true, user, password);
+    request.onreadystatechange = function() {
+        if (request.readyState !== 4) {
+            return;
+        }
+        if (request.status === 207) {
+            var xml = request.responseXML;
+            var principal_element = xml.querySelector("*|multistatus:root > *|response:first-of-type > *|propstat > *|prop > *|current-user-principal > *|href");
+            var displayname_element = xml.querySelector("*|multistatus:root > *|response:first-of-type > *|propstat > *|prop > *|displayname");
+            if (principal_element) {
+                callback(new Collection(
+                    principal_element.textContent,
+                    CollectionType.PRINCIPAL,
+                    displayname_element ? displayname_element.textContent : "",
+                    "",
+                    ""), null);
+            } else {
+                callback(null, "Internal error");
+            }
+        } else {
+            callback(null, request.status + " " + request.statusText);
+        }
+    }
+    request.send('<?xml version="1.0" encoding="utf-8" ?>' +
+                 '<propfind xmlns="DAV:">' +
+                     '<prop>' +
+                         '<current-user-principal />' +
+                         '<displayname />' +
+                     '</prop>' +
+                 '</propfind>');
+    return request;
+}
+
+/**
+ * Find all calendars and addressbooks in collection.
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ * @param {function(?Array<Collection>, ?string)} callback Returns result or error
+ * @return {XMLHttpRequest}
+ */
+function get_collections(user, password, collection, callback) {
+    var request = new XMLHttpRequest();
+    request.open("PROPFIND", SERVER + collection.href, true, user, password);
+    request.setRequestHeader("depth", "1");
+    request.onreadystatechange = function() {
+        if (request.readyState !== 4) {
+            return;
+        }
+        if (request.status === 207) {
+            var xml = request.responseXML;
+            var collections = [];
+            var responses = xml.querySelectorAll("*|multistatus:root > *|response");
+            var i;
+            for (i = 0; i < responses.length; i++) {
+                var response = responses[i];
+                var href_element = response.querySelector(":scope > *|href");
+                var resourcetype_element = response.querySelector(":scope > *|propstat > *|prop > *|resourcetype");
+                var displayname_element = response.querySelector(":scope > *|propstat > *|prop > *|displayname");
+                var calendarcolor_element = response.querySelector(":scope > *|propstat > *|prop > *|calendar-color");
+                var addressbookcolor_element = response.querySelector(":scope > *|propstat > *|prop > *|addressbook-color");
+                var calendardesc_element = response.querySelector(":scope > *|propstat > *|prop > *|calendar-description");
+                var addressbookdesc_element = response.querySelector(":scope > *|propstat > *|prop > *|addressbook-description");
+                var components_element = response.querySelector(":scope > *|propstat > *|prop > *|supported-calendar-component-set");
+                var href = href_element ? href_element.textContent : "";
+                var displayname = displayname_element ? displayname_element.textContent : "";
+                var type = "";
+                var color = "";
+                var description = "";
+                if (resourcetype_element) {
+                    if (resourcetype_element.querySelector(":scope > *|addressbook")) {
+                        type = CollectionType.ADDRESSBOOK;
+                        color = addressbookcolor_element ? addressbookcolor_element.textContent : "";
+                        description = addressbookdesc_element ? addressbookdesc_element.textContent : "";
+                    } else if (resourcetype_element.querySelector(":scope > *|calendar")) {
+                        if (components_element) {
+                            if (components_element.querySelector(":scope > *|comp[name=VEVENT]")) {
+                                type = CollectionType.union(type, CollectionType.CALENDAR);
+                            }
+                            if (components_element.querySelector(":scope > *|comp[name=VJOURNAL]")) {
+                                type = CollectionType.union(type, CollectionType.JOURNAL);
+                            }
+                            if (components_element.querySelector(":scope > *|comp[name=VTODO]")) {
+                                type = CollectionType.union(type, CollectionType.TASKS);
+                            }
+                        }
+                        color = calendarcolor_element ? calendarcolor_element.textContent : "";
+                        description = calendardesc_element ? calendardesc_element.textContent : "";
+                    }
+                }
+                // Quirks
+                if (href === (displayname ? "/" + displayname + "/" : "/")) {
+                    displayname = "";
+                }
+                var sane_color = color.trim();
+                if (sane_color) {
+                    var color_match = COLOR_RE.exec(sane_color);
+                    if (color_match) {
+                        sane_color = color_match[1];
+                    } else {
+                        sane_color = "";
+                    }
+                }
+                if (href.substr(-1) === "/" && href !== collection.href && type) {
+                    collections.push(new Collection(href, type, displayname, description, sane_color));
+                }
+            }
+            collections.sort(function(a, b) {
+                /** @type {string} */ var ca = a.displayname || a.href;
+                /** @type {string} */ var cb = b.displayname || b.href;
+                return ca.localeCompare(cb);
+            });
+            callback(collections, null);
+        } else {
+            callback(null, request.status + " " + request.statusText);
+        }
+    };
+    request.send('<?xml version="1.0" encoding="utf-8" ?>' +
+                 '<propfind xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:CR="urn:ietf:params:xml:ns:carddav" xmlns:I="http://apple.com/ns/ical/" xmlns:INF="http://inf-it.com/ns/ab/">' +
+                     '<prop>' +
+                         '<resourcetype />' +
+                         '<displayname />' +
+                         '<I:calendar-color />' +
+                         '<INF:addressbook-color />' +
+                         '<C:calendar-description />' +
+                         '<C:supported-calendar-component-set />' +
+                         '<CR:addressbook-description />' +
+                     '</prop>' +
+                 '</propfind>');
+    return request;
+}
+
+/**
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ * @param {function(?string)} callback Returns error or null
+ * @return {XMLHttpRequest}
+ */
+function delete_collection(user, password, collection, callback) {
+    var request = new XMLHttpRequest();
+    request.open("DELETE", SERVER + collection.href, true, user, password);
+    request.onreadystatechange = function() {
+        if (request.readyState !== 4) {
+            return;
+        }
+        if (200 <= request.status && request.status < 300) {
+            callback(null);
+        } else {
+            callback(request.status + " " + request.statusText);
+        }
+    };
+    request.send();
+    return request;
+}
+
+/**
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ * @param {boolean} create
+ * @param {function(?string)} callback Returns error or null
+ * @return {XMLHttpRequest}
+ */
+function create_edit_collection(user, password, collection, create, callback) {
+    var request = new XMLHttpRequest();
+    request.open(create ? "MKCOL" : "PROPPATCH", SERVER + collection.href, true, user, password);
+    request.onreadystatechange = function() {
+        if (request.readyState !== 4) {
+            return;
+        }
+        if (200 <= request.status && request.status < 300) {
+            callback(null);
+        } else {
+            callback(request.status + " " + request.statusText);
+        }
+    };
+    var displayname = escape_xml(collection.displayname);
+    var calendar_color = "";
+    var addressbook_color = "";
+    var calendar_description = "";
+    var addressbook_description = "";
+    var resourcetype;
+    var components = "";
+    if (collection.type === CollectionType.ADDRESSBOOK) {
+        addressbook_color = escape_xml(collection.color + (collection.color ? "ff" : ""));
+        addressbook_description = escape_xml(collection.description);
+        resourcetype = '<CR:addressbook />';
+    } else {
+        calendar_color = escape_xml(collection.color + (collection.color ? "ff" : ""));
+        calendar_description = escape_xml(collection.description);
+        resourcetype = '<C:calendar />';
+        if (CollectionType.is_subset(CollectionType.CALENDAR, collection.type)) {
+            components += '<C:comp name="VEVENT" />';
+        }
+        if (CollectionType.is_subset(CollectionType.JOURNAL, collection.type)) {
+            components += '<C:comp name="VJOURNAL" />';
+        }
+        if (CollectionType.is_subset(CollectionType.TASKS, collection.type)) {
+            components += '<C:comp name="VTODO" />';
+        }
+    }
+    var xml_request = create ? "mkcol" : "propertyupdate";
+    request.send('<?xml version="1.0" encoding="UTF-8" ?>' +
+                 '<' + xml_request + ' xmlns="DAV:" xmlns:C="urn:ietf:params:xml:ns:caldav" xmlns:CR="urn:ietf:params:xml:ns:carddav" xmlns:I="http://apple.com/ns/ical/" xmlns:INF="http://inf-it.com/ns/ab/">' +
+                     '<set>' +
+                         '<prop>' +
+                             (create ? '<resourcetype><collection />' + resourcetype + '</resourcetype>' : '') +
+                             '<C:supported-calendar-component-set>' + components + '</C:supported-calendar-component-set>' +
+                             '<displayname>' + displayname + '</displayname>' +
+                             '<I:calendar-color>' + calendar_color + '</I:calendar-color>' +
+                             '<INF:addressbook-color>' + addressbook_color + '</INF:addressbook-color>' +
+                             '<CR:addressbook-description>' + addressbook_description + '</CR:addressbook-description>' +
+                             '<C:calendar-description>' + calendar_description + '</C:calendar-description>' +
+                         '</prop>' +
+                     '</set>' +
+                 '</' + xml_request + '>');
+    return request;
+}
+
+/**
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ * @param {function(?string)} callback Returns error or null
+ * @return {XMLHttpRequest}
+ */
+function create_collection(user, password, collection, callback) {
+    return create_edit_collection(user, password, collection, true, callback);
+}
+
+/**
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ * @param {function(?string)} callback Returns error or null
+ * @return {XMLHttpRequest}
+ */
+function edit_collection(user, password, collection, callback) {
+    return create_edit_collection(user, password, collection, false, callback);
+}
+
+/**
+ * @interface
+ */
+function Scene() {}
+/**
+ * Scene is on top of stack and visible.
+ */
+Scene.prototype.show = function() {};
+/**
+ * Scene is no longer visible.
+ */
+Scene.prototype.hide = function() {};
+/**
+ * Scene is removed from scene stack.
+ */
+Scene.prototype.release = function() {};
+
+
+/**
+ * @type {Array<Scene>}
+ */
+var scene_stack = [];
+
+/**
+ * Push scene onto stack.
+ * @param {Scene} scene
+ * @param {boolean} replace Replace the scene on top of the stack.
+ */
+function push_scene(scene, replace) {
+    if (scene_stack.length >= 1) {
+        scene_stack[scene_stack.length - 1].hide();
+        if (replace) {
+            scene_stack.pop().release();
+        }
+    }
+    scene_stack.push(scene);
+    scene.show();
+}
+
+/**
+ * Remove scenes from stack.
+ * @param {number} index New top of stack
+ */
+function pop_scene(index) {
+    if (scene_stack.length - 1 <= index) {
+        return;
+    }
+    scene_stack[scene_stack.length - 1].hide();
+    while (scene_stack.length - 1 > index) {
+        var old_length = scene_stack.length;
+        scene_stack.pop().release();
+        if (old_length - 1 === index + 1) {
+            break;
+        }
+    }
+    if (scene_stack.length >= 1) {
+        var scene = scene_stack[scene_stack.length - 1];
+        scene.show();
+    } else {
+        throw "Scene stack is empty";
+    }
+}
+
+/**
+ * @constructor
+ * @implements {Scene}
+ */
+function LoginScene() {
+    var othis = this;
+    var html_scene = document.getElementById("loginscene");
+    var form = html_scene.querySelector("[name=form]");
+    var user_form = html_scene.querySelector("[name=user]");
+    var password_form = html_scene.querySelector("[name=password]");
+    var error_form = html_scene.querySelector("[name=error]");
+    var logout_view = document.getElementById("logoutview");
+    var logout_user_form = logout_view.querySelector("[name=user]");
+    var logout_btn = logout_view.querySelector("[name=link]");
+
+    /** @type {?number} */ var scene_index = null;
+    var user = "";
+    var error = "";
+    /** @type {?XMLHttpRequest} */ var principal_req = null;
+
+    function read_form() {
+        user = user_form.value;
+    }
+
+    function fill_form() {
+        user_form.value = user;
+        password_form.value = "";
+        error_form.textContent = error ? "Error: " + error : "";
+    }
+
+    function onlogin() {
+        try {
+            read_form();
+            var password = password_form.value;
+            if (user) {
+                error = "";
+                // setup logout
+                logout_view.style.display = "block";
+                logout_btn.onclick = onlogout;
+                logout_user_form.textContent = user;
+                // Fetch principal
+                var loading_scene = new LoadingScene();
+                push_scene(loading_scene, false);
+                principal_req = get_principal(user, password, function(collection, error1) {
+                    if (scene_index === null) {
+                        return;
+                    }
+                    principal_req = null;
+                    if (error1) {
+                        error = error1;
+                        pop_scene(scene_index);
+                    } else {
+                        // show collections
+                        var saved_user = user;
+                        user = "";
+                        var collections_scene = new CollectionsScene(
+                            saved_user, password, collection, function(error1) {
+                                error = error1;
+                                user = saved_user;
+                            });
+                        push_scene(collections_scene, true);
+                    }
+                });
+            } else {
+                error = "Username is empty";
+                fill_form();
+            }
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function onlogout() {
+        try {
+            if (scene_index === null) {
+                return false;
+            }
+            user = "";
+            pop_scene(scene_index);
+        } catch (err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    this.show = function() {
+        this.release();
+        fill_form();
+        form.onsubmit = onlogin;
+        html_scene.style.display = "block";
+        user_form.focus();
+        scene_index = scene_stack.length - 1;
+    };
+    this.hide = function() {
+        read_form();
+        html_scene.style.display = "none";
+        form.onsubmit = null;
+    };
+    this.release = function() {
+        scene_index = null;
+        // cancel pending requests
+        if (principal_req !== null) {
+            principal_req.abort();
+            principal_req = null;
+        }
+        // remove logout
+        logout_view.style.display = "none";
+        logout_btn.onclick = null;
+        logout_user_form.textContent = "";
+    };
+}
+
+/**
+ * @constructor
+ * @implements {Scene}
+ */
+function LoadingScene() {
+    var html_scene = document.getElementById("loadingscene");
+    this.show = function() {
+        html_scene.style.display = "block";
+    };
+    this.hide = function() {
+        html_scene.style.display = "none";
+    };
+    this.release = function() {};
+}
+
+/**
+ * @constructor
+ * @implements {Scene}
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection The principal collection.
+ * @param {function(string)} onerror Called when an error occurs, before the
+ *                                   scene is popped.
+ */
+function CollectionsScene(user, password, collection, onerror) {
+    var othis = this;
+    var html_scene = document.getElementById("collectionsscene");
+    var template = html_scene.querySelector("[name=collectiontemplate]");
+    var new_btn = html_scene.querySelector("[name=new]");
+
+    /** @type {?number} */ var scene_index = null;
+    var saved_template_display = null;
+    /** @type {?XMLHttpRequest} */ var collections_req = null;
+    var timer = null;
+    /** @type {?Array<Collection>} */ var collections = null;
+    /** @type {Array<Node>} */ nodes = [];
+
+    function onnew() {
+        try {
+            var create_collection_scene = new CreateEditCollectionScene(user, password, collection);
+            push_scene(create_collection_scene, false);
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function onedit(collection) {
+        try {
+            var edit_collection_scene = new CreateEditCollectionScene(user, password, collection);
+            push_scene(edit_collection_scene, false);
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function ondelete(collection) {
+        try {
+            var delete_collection_scene = new DeleteCollectionScene(user, password, collection);
+            push_scene(delete_collection_scene, false);
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function show_collections(collections) {
+        nodes.forEach(function(node) {
+            template.parentNode.removeChild(node);
+        });
+        nodes = [];
+        collections.forEach(function (collection) {
+            var node = template.cloneNode(true);
+            var title_form = node.querySelector("[name=title]");
+            var description_form = node.querySelector("[name=description]");
+            var url_form = node.querySelector("[name=url]");
+            var color_form = node.querySelector("[name=color]");
+            var delete_btn = node.querySelector("[name=delete]");
+            var edit_btn = node.querySelector("[name=edit]");
+            if (collection.color) {
+                color_form.style.color = collection.color;
+            } else {
+                color_form.style.display = "none";
+            }
+            var possible_types = [CollectionType.ADDRESSBOOK];
+            [CollectionType.CALENDAR, ""].forEach(function(e) {
+                [CollectionType.union(e, CollectionType.JOURNAL), e].forEach(function(e) {
+                    [CollectionType.union(e, CollectionType.TASKS), e].forEach(function(e) {
+                        if (e) {
+                            possible_types.push(e);
+                        }
+                    });
+                });
+            });
+            possible_types.forEach(function(e) {
+                if (e !== collection.type) {
+                    node.querySelector("[name=" + e + "]").style.display = "none";
+                }
+            });
+            title_form.textContent = collection.displayname || collection.href;
+            description_form.textContent = collection.description;
+            href = SERVER.replace("//", "//" + user + "@") + collection.href;
+            url_form.href = href;
+            url_form.textContent = href;
+            delete_btn.onclick = function(ev) {return ondelete(collection);};
+            edit_btn.onclick = function(ev) {return onedit(collection);};
+            node.style.display = saved_template_display;
+            nodes.push(node);
+            template.parentNode.insertBefore(node, template);
+        });
+    }
+
+    function update() {
+        if (collections === null) {
+            var loading_scene = new LoadingScene();
+            push_scene(loading_scene, false);
+        }
+        collections_req = get_collections(user, password, collection, function(collections1, error) {
+            if (scene_index === null) {
+                return;
+            }
+            collections_req = null;
+            if (error) {
+                onerror(error);
+                pop_scene(scene_index - 1)
+            } else {
+                var old_collections = collections;
+                collections = collections1;
+                timer = window.setTimeout(update, UPDATE_INTERVAL);
+                if (old_collections === null) {
+                    pop_scene(scene_index);
+                } else {
+                    show_collections(collections);
+                }
+            }
+        });
+    }
+
+    this.show = function() {
+        saved_template_display = template.style.display;
+        template.style.display = "none";
+        html_scene.style.display = "block";
+        new_btn.onclick = onnew;
+        if (scene_index === null) {
+            scene_index = scene_stack.length - 1;
+            if (collections === null && collections_req !== null) {
+                pop_scene(scene_index - 1);
+                return;
+            }
+            update();
+        } else if (collections === null) {
+            pop_scene(scene_index - 1);
+        } else {
+            if (timer !== null) {
+                show_collections(collections);
+            } else {
+                collections = null;
+                update();
+            }
+        }
+    };
+    this.hide = function() {
+        html_scene.style.display = "none";
+        template.style.display = saved_template_display;
+        new_btn.onclick = null;
+        if (timer !== null) {
+            window.clearTimeout(timer);
+            timer = null;
+        }
+        if (collections !== null && collections_req !== null) {
+            collections_req.abort();
+            collections_req = null;
+        }
+        show_collections([]);
+    };
+    this.release = function() {
+        scene_index = null;
+        if (collections_req !== null) {
+            collections_req.abort();
+            collections_req = null;
+        }
+    };
+}
+
+/**
+ * @constructor
+ * @implements {Scene}
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection
+ */
+function DeleteCollectionScene(user, password, collection) {
+    var html_scene = document.getElementById("deletecollectionscene");
+    var title_form = html_scene.querySelector("[name=title]");
+    var error_form = html_scene.querySelector("[name=error]");
+    var delete_btn = html_scene.querySelector("[name=delete]");
+    var cancel_btn = html_scene.querySelector("[name=cancel]");
+    var no_btn = html_scene.querySelector("[name=no]");
+
+    /** @type {?number} */ var scene_index = null;
+    /** @type {?XMLHttpRequest} */ var delete_req = null;
+    var error = "";
+
+    function ondelete() {
+        try {
+            var loading_scene = new LoadingScene();
+            push_scene(loading_scene);
+            delete_req = delete_collection(user, password, collection, function(error1) {
+                if (scene_index === null) {
+                    return;
+                }
+                delete_req = null;
+                if (error1) {
+                    error = error1;
+                    pop_scene(scene_index);
+                } else {
+                    pop_scene(scene_index - 1);
+                }
+            });
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function oncancel() {
+        try {
+            pop_scene(scene_index - 1);
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    this.show = function() {
+        this.release();
+        scene_index = scene_stack.length - 1;
+        html_scene.style.display = "block";
+        title_form.textContent = collection.displayname || collection.href;
+        error_form.textContent = error ? "Error: " + error : "";
+        delete_btn.onclick = ondelete;
+        cancel_btn.onclick = oncancel;
+    };
+    this.hide = function() {
+        html_scene.style.display = "none";
+        cancel_btn.onclick = null;
+        delete_btn.onclick = null;
+    };
+    this.release = function() {
+        scene_index = null;
+        if (delete_req !== null) {
+            delete_req.abort();
+            delete_req = null;
+        }
+    };
+}
+
+/**
+ * Generate random hex number.
+ * @param {number} length
+ * @return {string}
+ */
+function randHex(length) {
+    var s = Math.floor(Math.random() * Math.pow(16, length)).toString(16);
+    while (s.length < length) {
+        s = "0" + s;
+    }
+    return s;
+}
+
+/**
+ * @constructor
+ * @implements {Scene}
+ * @param {string} user
+ * @param {string} password
+ * @param {Collection} collection if it's a principal collection, a new
+ *                                collection will be created inside of it.
+ *                                Otherwise the collection will be edited.
+ */
+function CreateEditCollectionScene(user, password, collection) {
+    var edit = collection.type !== CollectionType.PRINCIPAL;
+    var html_scene = document.getElementById(edit ? "editcollectionscene" : "createcollectionscene");
+    var title_form = edit ? html_scene.querySelector("[name=title]") : null;
+    var error_form = html_scene.querySelector("[name=error]");
+    var displayname_form = html_scene.querySelector("[name=displayname]");
+    var description_form = html_scene.querySelector("[name=description]");
+    var type_form = html_scene.querySelector("[name=type]");
+    var color_form = html_scene.querySelector("[name=color]");
+    var submit_btn = html_scene.querySelector("[name=submit]");
+    var cancel_btn = html_scene.querySelector("[name=cancel]");
+
+    /** @type {?number} */ var scene_index = null;
+    /** @type {?XMLHttpRequest} */ var create_edit_req = null;
+    var error = "";
+    /** @type {?Element} */ var saved_type_form = null;
+
+    var href = edit ? collection.href : (
+        collection.href + randHex(8) + "-" + randHex(4) + "-" + randHex(4) +
+        "-" + randHex(4) + "-" + randHex(12) + "/");
+    var displayname = edit ? collection.displayname : "";
+    var description = edit ? collection.description : "";
+    var type = edit ? collection.type : CollectionType.CALENDAR_JOURNAL_TASKS;
+    var color = edit && collection.color ? collection.color : "#" + randHex(6);
+
+    function remove_invalid_types() {
+        if (!edit) {
+            return;
+        }
+        /** @type {HTMLOptionsCollection} */ var options = type_form.options;
+        // remove all options that are not supersets
+        var i;
+        for (i = options.length - 1; i >= 0; i--) {
+            if (!CollectionType.is_subset(type, options[i].value)) {
+                options.remove(i);
+            }
+        }
+    }
+
+    function read_form() {
+        displayname = displayname_form.value;
+        description = description_form.value;
+        type = type_form.value;
+        color = color_form.value;
+    }
+
+    function fill_form() {
+        displayname_form.value = displayname;
+        description_form.value = description;
+        type_form.value = type;
+        color_form.value = color;
+        error_form.textContent = error ? "Error: " + error : "";
+    }
+
+    function onsubmit() {
+        try {
+            read_form();
+            var sane_color = color.trim();
+            if (sane_color) {
+                var color_match = COLOR_RE.exec(sane_color);
+                if (!color_match) {
+                    error = "Invalid color";
+                    fill_form();
+                    return false;
+                }
+                sane_color = color_match[1];
+            }
+            var loading_scene = new LoadingScene();
+            push_scene(loading_scene);
+            var collection = new Collection(href, type, displayname, description, sane_color);
+            var callback = function(error1) {
+                if (scene_index === null) {
+                    return;
+                }
+                create_edit_req = null;
+                if (error1) {
+                    error = error1;
+                    pop_scene(scene_index);
+                } else {
+                    pop_scene(scene_index - 1);
+                }
+            };
+            if (edit) {
+                create_edit_req = edit_collection(user, password, collection, callback);
+            } else {
+                create_edit_req = create_collection(user, password, collection, callback);
+            }
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    function oncancel() {
+        try {
+            pop_scene(scene_index - 1);
+        } catch(err) {
+            console.error(err);
+        }
+        return false;
+    }
+
+    this.show = function() {
+        this.release();
+        scene_index = scene_stack.length - 1;
+        // Clone type_form because it's impossible to hide options without removing them
+        saved_type_form = type_form;
+        type_form = type_form.cloneNode(true);
+        saved_type_form.parentNode.replaceChild(type_form, saved_type_form);
+        remove_invalid_types();
+        html_scene.style.display = "block";
+        if (edit) {
+            title_form.textContent = collection.displayname || collection.href;
+        }
+        fill_form();
+        submit_btn.onclick = onsubmit;
+        cancel_btn.onclick = oncancel;
+    };
+    this.hide = function() {
+        read_form();
+        html_scene.style.display = "none";
+        // restore type_form
+        type_form.parentNode.replaceChild(saved_type_form, type_form);
+        type_form = saved_type_form;
+        saved_type_form = null;
+        submit_btn.onclick = null;
+        cancel_btn.onclick = null;
+    };
+    this.release = function() {
+        scene_index = null;
+        if (create_edit_req !== null) {
+            create_edit_req.abort();
+            create_edit_req = null;
+        }
+    };
+}
+
+function main() {
+    push_scene(new LoginScene(), false);
+}
+
+window.addEventListener("load", main);
diff --git a/radicale_web/web/index.html b/radicale_web/web/index.html
new file mode 100644
index 0000000..adb1742
--- /dev/null
+++ b/radicale_web/web/index.html
@@ -0,0 +1,105 @@
+<!DOCTYPE html>
+<html lang="en">
+    <head>
+        <meta charset="utf-8" />
+        <meta name="viewport" content="width=device-width initial-scale=1" />
+        <meta http-equiv="X-UA-Compatible" content="IE=edge" />
+        <script src="fn.js"></script>
+        <title>Web interface for Radicale</title>
+        <link href="css/main.css" media="screen" rel="stylesheet" />
+        <link href="css/icon.png" type="image/png" rel="shortcut icon" />
+    </head>
+    <body>
+        <nav>
+            <ul>
+                <li id="logoutview" style="display: none;"><a href="" name="link">Logout [<span name="user"></span>]</a></li>
+            </ul>
+        </nav>
+        <section id="loginscene" style="display: none;">
+            <h1>Login</h1>
+            <form name="form">
+                <input name="user" type="text" placeholder="Username"><br>
+                <input name="password" type="password" placeholder="Password"><br>
+                <span style="color: #A40000;" name="error"></span><br>
+                <button type="submit">Next</button>
+            </form>
+        </section>
+        <section id="loadingscene" style="display: none;">
+            <h1>Loading</h1>
+            Please wait...
+        </section>
+        <section id="collectionsscene" style="display: none;">
+            <h1>Collections</h1>
+            <a href="" name="new">Create new addressbook or calendar</a>
+            <article name="collectiontemplate">
+                <h2><span name="color">█ </span><span name="title">Title</span> <small>[<span name="ADDRESSBOOK">addressbook</span><span name="CALENDAR_JOURNAL_TASKS">calendar, journal and tasks</span><span name="CALENDAR_JOURNAL">calendar and journal</span><span name="CALENDAR_TASKS">calendar and tasks</span><span name="JOURNAL_TASKS">journal and tasks</span><span name="CALENDAR">calendar</span><span name="JOURNAL">journal</span><span name="TASKS">tasks</span>]</small></h2>
+                <span name="description">Description</span>
+                <ul>
+                    <li>URL: <a name="url">url</a></li>
+                    <li><a href="" name="edit">Edit</a></li>
+                    <li><a href="" name="delete">Delete</a></li>
+                </ul>
+            </article>
+        </section>
+        <section id="editcollectionscene" style="display: none;">
+            <h1>Edit collection</h1>
+            <h2>Edit <span name="title">title</span>:</h2>
+            <form>
+                Title:<br>
+                <input name="displayname" type="text"><br>
+                Description:<br>
+                <input name="description" type="text"><br>
+                Type:<br>
+                <select name="type">
+                    <option value="ADDRESSBOOK">addressbook</option>
+                    <option value="CALENDAR_JOURNAL_TASKS">calendar, journal and tasks</option>
+                    <option value="CALENDAR_JOURNAL">calendar and journal</option>
+                    <option value="CALENDAR_TASKS">calendar and tasks</option>
+                    <option value="JOURNAL_TASKS">journal and tasks</option>
+                    <option value="CALENDAR">calendar</option>
+                    <option value="JOURNAL">journal</option>
+                    <option value="TASKS">tasks</option>
+                </select><br>
+                Color:<br>
+                <input name="color" type="color"><br>
+                <span style="color: #A40000;" name="error"></span><br>
+                <button type="submit" name="submit">Save</button>
+                <button type="button" name="cancel">Cancel</button>
+            </form>
+        </section>
+        <section id="createcollectionscene" style="display: none;">
+            <h1>Create new collection</h1>
+            <form>
+                Title:<br>
+                <input name="displayname" type="text"><br>
+                Description:<br>
+                <input name="description" type="text"><br>
+                Type:<br>
+                <select name="type">
+                    <option value="ADDRESSBOOK">addressbook</option>
+                    <option value="CALENDAR_JOURNAL_TASKS">calendar, journal and tasks</option>
+                    <option value="CALENDAR_JOURNAL">calendar and journal</option>
+                    <option value="CALENDAR_TASKS">calendar and tasks</option>
+                    <option value="JOURNAL_TASKS">journal and tasks</option>
+                    <option value="CALENDAR">calendar</option>
+                    <option value="JOURNAL">journal</option>
+                    <option value="TASKS">tasks</option>
+                </select><br>
+                Color:<br>
+                <input name="color" type="color"><br>
+                <span style="color: #A40000;" name="error"></span><br>
+                <button type="submit" name="submit">Create</button>
+                <button type="button" name="cancel">Cancel</button>
+            </form>
+        </section>
+        <section id="deletecollectionscene" style="display: none;">
+            <h1>Delete collection</h1>
+            <h2>Delete <span name="title">title</span>?</h2>
+            <span style="color: #A40000;" name="error"></span><br>
+            <form>
+                <button type="button" name="delete">Yes</button>
+                <button type="button" name="cancel">No</button>
+            </form>
+        </section>
+    </body>
+</html>
diff --git a/setup.py b/setup.py
new file mode 100755
index 0000000..487c90d
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python3
+
+import glob
+import os
+import re
+
+from setuptools import setup
+
+init_path = os.path.join(os.path.dirname(__file__),
+                         "radicale_web", "__init__.py")
+with open(init_path) as f:
+    version = re.search(r'VERSION = "([^"]+)"', f.read()).group(1)
+os.chdir("radicale_web")
+web_data = glob.glob("web/**/*[!~]", recursive=True)
+os.chdir(os.pardir)
+
+setup(
+    name="Radicale_Web",
+    version=version,
+    description="Web interface for Radicale",
+    author="Unrud",
+    author_email="unrud@openaliasbox.org",
+    url="http://github.com/Unrud/RadicaleWeb",
+    license="GNU AGPL v3",
+    platforms="Any",
+    packages=["radicale_web"],
+    package_data={"radicale_web": web_data})