--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/plugins/calendar/calendar_base.js	Sat Jan 13 08:56:12 2018 -0500
@@ -0,0 +1,138 @@
+/**
+ * Base Javascript class for the Calendar plugin
+ *
+ * @author Lazlo Westerhof <hello@lazlo.me>
+ * @author Thomas Bruederli <bruederli@kolabsys.com>
+ *
+ * @licstart  The following is the entire license notice for the
+ * JavaScript code in this page.
+ *
+ * Copyright (C) 2010, Lazlo Westerhof <hello@lazlo.me>
+ * Copyright (C) 2013-2015, Kolab Systems AG <contact@kolabsys.com>
+ *
+ * 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/>.
+ *
+ * @licend  The above is the entire license notice
+ * for the JavaScript code in this page.
+ */
+
+// Basic setup for Roundcube calendar client class
+function rcube_calendar(settings)
+{
+    // extend base class
+    rcube_libcalendaring.call(this, settings);
+
+    // member vars
+    this.ui_loaded = false;
+    this.selected_attachment = null;
+
+    // private vars
+    var me = this;
+
+    // create new event from current mail message
+    this.create_from_mail = function(uid)
+    {
+      if (uid || (uid = rcmail.get_single_uid())) {
+        // load calendar UI (scripts and edit dialog template)
+        if (!this.ui_loaded) {
+          $.when(
+            $.getScript(rcmail.assets_path('plugins/calendar/calendar_ui.js')),
+            $.getScript(rcmail.assets_path('plugins/calendar/lib/js/fullcalendar.js')),
+            $.get(rcmail.url('calendar/inlineui'), function(html) { $(document.body).append(html); }, 'html')
+          ).then(function() {
+            // disable attendees feature (autocompletion and stuff is not initialized)
+            for (var c in rcmail.env.calendars)
+              rcmail.env.calendars[c].attendees = rcmail.env.calendars[c].resources = false;
+
+            me.ui_loaded = true;
+            me.ui = new rcube_calendar_ui(me.settings);
+            me.create_from_mail(uid);  // start over
+          });
+
+          return;
+        }
+
+        // get message contents for event dialog
+        var lock = rcmail.set_busy(true, 'loading');
+        rcmail.http_post('calendar/mailtoevent', {
+            '_mbox': rcmail.env.mailbox,
+            '_uid': uid
+          }, lock);
+      }
+    };
+
+    // callback function triggered from server with contents for the new event
+    this.mail2event_dialog = function(event)
+    {
+      if (event.title) {
+        this.ui.add_event(event);
+        if (rcmail.message_list)
+          rcmail.message_list.blur();
+      }
+    };
+
+    // handler for attachment-save-calendar commands
+    this.save_to_calendar = function(p)
+    {
+      // TODO: show dialog to select the calendar for importing
+      if (this.selected_attachment && window.rcube_libcalendaring) {
+        rcmail.http_post('calendar/mailimportattach', {
+            _uid: rcmail.env.uid,
+            _mbox: rcmail.env.mailbox,
+            _part: this.selected_attachment
+            // _calendar: $('#calendar-attachment-saveto').val(),
+          }, rcmail.set_busy(true, 'itip.savingdata'));
+      }
+    }
+}
+
+
+/* calendar plugin initialization (for non-calendar tasks) */
+window.rcmail && rcmail.addEventListener('init', function(evt) {
+  if (rcmail.task != 'calendar') {
+    var cal = new rcube_calendar($.extend(rcmail.env.calendar_settings, rcmail.env.libcal_settings));
+
+    // register create-from-mail command to message_commands array
+    if (rcmail.env.task == 'mail') {
+      rcmail.register_command('calendar-create-from-mail', function() { cal.create_from_mail(); });
+      rcmail.register_command('attachment-save-calendar', function() { cal.save_to_calendar(); });
+      rcmail.addEventListener('plugin.mail2event_dialog', function(p) { cal.mail2event_dialog(p); });
+      rcmail.addEventListener('plugin.unlock_saving', function(p) { cal.ui && cal.ui.unlock_saving(); });
+
+      if (rcmail.env.action != 'show') {
+        rcmail.env.message_commands.push('calendar-create-from-mail');
+        rcmail.add_element($('<a>'));
+      }
+      else {
+        rcmail.enable_command('calendar-create-from-mail', true);
+      }
+
+      rcmail.addEventListener('beforemenu-open', function(p) {
+        if (p.menu == 'attachmentmenu') {
+          cal.selected_attachment = p.id;
+          var mimetype = rcmail.env.attachments[p.id];
+          rcmail.enable_command('attachment-save-calendar', mimetype == 'text/calendar' || mimetype == 'text/x-vcalendar' || mimetype == 'application/ics');
+        }
+      });
+    }
+  }
+
+  rcmail.register_command('plugin.calendar', function() { rcmail.switch_task('calendar'); }, true);
+
+  rcmail.addEventListener('plugin.ping_url', function(p) {
+    var action = p.action;
+    p.action = p.event = null;
+    new Image().src = rcmail.url(action, p);
+  });
+});