<?xml version="1.0"?>
<!-- This Source Code Form is subject to the terms of the Mozilla Public
   - License, v. 2.0. If a copy of the MPL was not distributed with this
   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->

<!DOCTYPE dialog [
  <!ENTITY % dtd1 SYSTEM "chrome://calendar/locale/global.dtd" > %dtd1;
  <!ENTITY % dtd2 SYSTEM "chrome://calendar/locale/calendar.dtd" > %dtd2;
  <!ENTITY % dtd3 SYSTEM "chrome://calendar/locale/calendar-event-dialog.dtd"> %dtd3;
]>

<bindings xmlns="http://www.mozilla.org/xbl"
          xmlns:xbl="http://www.mozilla.org/xbl"
          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
  <binding id="attendees-list">
    <content>
      <xul:listbox anonid="listbox"
                   seltype="multiple"
                   class="listbox-noborder"
                   rows="-1"
                   flex="1">
        <xul:listcols>
          <xul:listcol/>
          <xul:listcol/>
          <xul:listcol flex="1"/>
        </xul:listcols>
        <xul:listitem anonid="item" class="addressingWidgetItem" allowevents="true">
          <xul:listcell class="addressingWidgetCell" align="center" pack="center">
            <xul:image id="attendeeCol1#1" anonid="rolestatus-icon"/>
          </xul:listcell>
          <xul:listcell class="addressingWidgetCell">
              <xul:image id="attendeeCol2#1" anonid="usertype-icon" class="usertype-icon" onclick="this.parentNode.select();"/>
          </xul:listcell>
          <xul:listcell class="addressingWidgetCell">
            <xul:textbox id="attendeeCol3#1"
                         anonid="input"
                         class="plain textbox-addressingWidget uri-element"
                         type="autocomplete"
                         flex="1"
                         autocompletesearch="addrbook ldap"
                         autocompletesearchparam="{}"
                         timeout="300"
                         maxrows="4"
                         completedefaultindex="true"
                         forcecomplete="true"
                         minresultsforpopup="1"
                         onblur="if (this.localName == 'textbox') document.getBindingParent(this).returnHit(this, true)"
                         ignoreblurwhilesearching="true"
                         oninput="this.setAttribute('dirty', 'true');"
                         ontextentered="document.getBindingParent(this).returnHit(this);">
            </xul:textbox>
          </xul:listcell>
        </xul:listitem>
      </xul:listbox>
    </content>

    <implementation>
      <field name="mMaxAttendees">0</field>
      <field name="mContentHeight">0</field>
      <field name="mRowHeight">0</field>
      <field name="mNumColumns">0</field>
      <field name="mIsOffline">0</field>
      <field name="mIsReadOnly">false</field>
      <field name="mIsInvitation">false</field>
      <field name="mPopupOpen">false</field>

      <constructor><![CDATA[
        Components.utils.import("resource://calendar/modules/calUtils.jsm");
        Components.utils.import("resource://gre/modules/Services.jsm");
        Components.utils.import("resource:///modules/mailServices.js");

        this.mMaxAttendees = 0;

        var self = this;
        var load = function loadHandler() {
            self.onLoad();
        };
        window.addEventListener("load", load, true);
      ]]></constructor>

      <method name="onLoad">
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var template =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "item");

          this.onInitialize();

          // this trigger the continous update chain, which
          // effectively calls this.onModify() on predefined
          // time intervals [each second].
          var self = this;
          var callback = function() {
              setTimeout(callback, 1000);
              self.onModify();
          }
          callback();
        ]]></body>
      </method>

      <method name="onInitialize">
        <body><![CDATA[
          var args = window.arguments[0];
          var organizer = args.organizer;
          var attendees = args.attendees;
          var calendar = args.calendar;

          this.mIsReadOnly = calendar.readOnly;

          // assume we're the organizer [in case that the calendar
          // does not support the concept of identities].
          var organizerID = ((organizer && organizer.id)
                             ? organizer.id
                             : calendar.getProperty("organizerId"));

          calendar = cal.wrapInstance(calendar, Components.interfaces.calISchedulingSupport);
          this.mIsInvitation = (calendar && calendar.isInvitation(args.item));

          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var template =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "item");
          template.focus();

          if (this.mIsReadOnly || this.mIsInvitation) {
              listbox.setAttribute("disabled", "true");
          }

          // TODO: the organizer should show up in the attendee list, but this information
          // should be based on the organizer contained in the appropriate field of calIItemBase.
          // This is currently not supported, since we're still missing calendar identities.
          if (organizerID && organizerID != "") {
              if (!organizer) {
                  organizer = this.createAttendee();
                  organizer.id = organizerID;
                  organizer.role = "CHAIR";
                  organizer.participationStatus = "ACCEPTED";
              } else {
                  if (!organizer.id) {
                      organizer.id = organizerID;
                  }
                  if (!organizer.role) {
                      organizer.role = "CHAIR";
                  }
                  if (!organizer.participationStatus) {
                      organizer.participationStatus = "ACCEPTED";
                  }
              }
              if (!organizer.commonName || !organizer.commonName.length) {
                  organizer.commonName = calendar.getProperty("organizerCN");
              }
              organizer.isOrganizer = true;
              this.appendAttendee(organizer, listbox, template, true);
          }

          var numRowsAdded = 0;
          if (attendees.length > 0) {
              for each (var attendee in attendees) {
                  this.appendAttendee(attendee, listbox, template, false);
                  numRowsAdded++;
              }
          }
          if (numRowsAdded == 0) {
              this.appendAttendee(null, listbox, template, false);
          }

          // detach the template item from the listbox, but hold the reference.
          // until this function returns we add at least a single copy of this template back again.
          template.remove();

          this.setFocus(this.mMaxAttendees);
        ]]></body>
      </method>

      <!-- appends a new row using an existing attendee structure -->
      <method name="appendAttendee">
        <parameter name="aAttendee"/>
        <parameter name="aParentNode"/>
        <parameter name="aTemplateNode"/>
        <parameter name="aDisableIfOrganizer"/>
        <body><![CDATA[
          // create a new listbox item and append it to our parent control.
          var newNode = aTemplateNode.cloneNode(true);

          var input =
              document.getAnonymousElementByAttribute(
                  newNode, "anonid", "input");
          var roleStatusIcon =
              document.getAnonymousElementByAttribute(
                  newNode, "anonid", "rolestatus-icon");
          var userTypeIcon =
              document.getAnonymousElementByAttribute(
                  newNode, "anonid", "usertype-icon");

          // We always clone the first row. The problem is that the first row
          // could be focused. When we clone that row, we end up with a cloned
          // XUL textbox that has a focused attribute set.  Therefore we think
          // we're focused and don't properly refocus.  The best solution to this
          // would be to clone a template row that didn't really have any presentation,
          // rather than using the real visible first row of the listbox.
          // For now we'll just put in a hack that ensures the focused attribute
          // is never copied when the node is cloned.
          if (input.getAttribute('focused') != '') {
              input.removeAttribute('focused');
          }

          aParentNode.appendChild(newNode);

          // the template could have its fields disabled,
          // that's why we need to reset their status.
          input.removeAttribute("disabled");
          userTypeIcon.removeAttribute("disabled");
          roleStatusIcon.removeAttribute("disabled");

          if (this.mIsReadOnly || this.mIsInvitation) {
              input.setAttribute("disabled", "true");
              userTypeIcon.setAttribute("disabled", "true");
              roleStatusIcon.setAttribute("disabled", "true");
          }

          // disable the input-field [name <email>] if this attendee
          // appears to be the organizer.
          if (aDisableIfOrganizer && aAttendee && aAttendee.isOrganizer) {
              input.setAttribute("disabled", "true");
          }

          this.mMaxAttendees++;
          var rowNumber = this.mMaxAttendees;
          if (rowNumber >= 0) {
              roleStatusIcon.setAttribute("id", "attendeeCol1#" + rowNumber);
              userTypeIcon.setAttribute("id", "attendeeCol2#" + rowNumber);
              input.setAttribute("id", "attendeeCol3#" + rowNumber);
          }

          if (!aAttendee) {
              aAttendee = this.createAttendee();
          }

          // construct the display string from common name and/or email address.
          var inputValue = aAttendee.commonName;
          var regexp = new RegExp("^mailto:(.*)", "i");
          if (inputValue) {
              // Make the commonName appear in quotes if it contains a
              // character that could confuse the header parser
              if (inputValue.search(/[,;<>@]/) != -1) {
                  inputValue = '"' + inputValue + '"';
              }
              var email = aAttendee.id;
              if (email && email.length) {
                  if (regexp.test(email)) {
                      inputValue += ' <' + RegExp.$1 + '>';
                  } else {
                      inputValue += ' <' + email + '>';
                  }
              }
          } else {
              var email = aAttendee.id;
              if (email && email.length) {
                  if (regexp.test(email)) {
                      inputValue = RegExp.$1;
                  } else {
                      inputValue = email;
                  }
              }
          }

          // remove leading spaces
          while (inputValue && inputValue[0] == " " ) {
              inputValue = inputValue.substring(1, inputValue.length);
          }

          // don't set value with null, otherwise autocomplete stops working,
          // but make sure attendee and dirty are set
          if (inputValue && inputValue != "") {
	          input.setAttribute("value", inputValue);
	          input.value = inputValue;
          }
          input.attendee = aAttendee;
          input.setAttribute("dirty", "true");

          if (aAttendee) {
              // Set up userType
              setElementValue(userTypeIcon, aAttendee.userType || false, "cutype");
              this.updateTooltip(userTypeIcon);

              // Set up role/status icon
              if (aAttendee.isOrganizer) {
                  roleStatusIcon.setAttribute("class", "status-icon");
                  setElementValue(roleStatusIcon, aAttendee.participationStatus || false, "status");
              } else {
                  roleStatusIcon.setAttribute("class", "role-icon");
                  setElementValue(roleStatusIcon, aAttendee.role || false, "role");
              }
              this.updateTooltip(roleStatusIcon);
          }

          return true;
        ]]></body>
      </method>

      <method name="appendNewRow">
        <parameter name="aSetFocus"/>
        <parameter name="aInsertAfter"/>
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var listitem1 = this.getListItem(1);
          var newNode = null;

          if (listbox && listitem1) {
              var newAttendee = this.createAttendee();
              var nextDummy = this.getNextDummyRow();
              newNode = listitem1.cloneNode(true);

              if (aInsertAfter) {
                  listbox.insertBefore(newNode, aInsertAfter.nextSibling);
              } else if (nextDummy) {
                  listbox.replaceChild(newNode, nextDummy);
              } else {
                  listbox.appendChild(newNode);
              }

              var input =
                  document.getAnonymousElementByAttribute(
                      newNode, "anonid", "input");
              var roleStatusIcon =
                  document.getAnonymousElementByAttribute(
                      newNode, "anonid", "rolestatus-icon");
              var userTypeIcon =
                  document.getAnonymousElementByAttribute(
                      newNode, "anonid", "usertype-icon");

              // the template could have its fields disabled,
              // that's why we need to reset their status.
              input.removeAttribute("disabled");
              roleStatusIcon.removeAttribute("disabled");
              userTypeIcon.removeAttribute("disabled");

              if (this.mIsReadOnly || this.mIsInvitation) {
                  input.setAttribute("disabled", "true");
                  roleStatusIcon.setAttribute("disabled", "true");
                  userTypeIcon.setAttribute("disabled", "true");
              }

              this.mMaxAttendees++;
              var rowNumber = this.mMaxAttendees;
              if (rowNumber >= 0) {
                  roleStatusIcon.setAttribute("id", "attendeeCol1#" + rowNumber);
                  userTypeIcon.setAttribute("id", "attendeeCol2#" + rowNumber);
                  input.setAttribute("id", "attendeeCol3#" + rowNumber);
              }

              input.value = null;
              input.removeAttribute("value");
              input.attendee = newAttendee;

              // set role and participation status
              //status.setAttribute("status", newAttendee.participationStatus);
              //role.setAttribute("role", newAttendee.role);
              roleStatusIcon.setAttribute("class", "role-icon");
              roleStatusIcon.setAttribute("role", "REQ-PARTICIPANT");
              userTypeIcon.setAttribute("cutype", "INDIVIDUAL");

              // Set tooltip for rolenames and usertype icon
              this.updateTooltip(roleStatusIcon);
              this.updateTooltip(userTypeIcon);

              // We always clone the first row.  The problem is that the first row
              // could be focused.  When we clone that row, we end up with a cloned
              // XUL textbox that has a focused attribute set.  Therefore we think
              // we're focused and don't properly refocus.  The best solution to this
              // would be to clone a template row that didn't really have any presentation,
              // rather than using the real visible first row of the listbox.
              // For now we'll just put in a hack that ensures the focused attribute
              // is never copied when the node is cloned.
              if (input.getAttribute('focused') != '') {
                  input.removeAttribute('focused');
              }

              // focus on new input widget
              if (aSetFocus) {
                  this.setFocus(newNode);
              }
          }
          return newNode;
        ]]></body>
      </method>

      <property name="attendees">
        <getter><![CDATA[
          let attendees = [];
          let inputField;


          function copyNameAttributes(email, name, attendee) {
              // If the new address has no 'mailto'-prefix but seems
              // to look like an email-address, we prepend the prefix.
              // This also allows for non-email-addresses.
              if (email.toLowerCase().indexOf("mailto:") != 0) {
                  if (email.indexOf("@") >= 0) {
                      email = "MAILTO:" + email;
                  }
              }
              attendee.id = email;

              if (name && name.length > 0) {
                  attendee.commonName = name
              }
              return attendee;
          }

          for (let i = 1; inputField = this.getInputElement(i); i++) {
              if (inputField && inputField.value != "") {
                  // the inputfield already has a reference to the attendee
                  // object, we just need to fill in the name.
                  let attendee = inputField.attendee.clone();
                  if (attendee.isOrganizer) {
                      continue;
                  }

                  attendee.role = this.getRoleElement(i).getAttribute("role");
                  //attendee.participationStatus = this.getStatusElement(i).getAttribute("status");
                  let userType = this.getUserTypeElement(i).getAttribute("cutype");
                  attendee.userType = (userType == "INDIVIDUAL" ? null : userType) // INDIVIDUAL is the default

                  // break the list of potentially many attendees back into individual names
                  let emailAddresses = {};
                  let names = {};
                  let fullNames = {};

                  MailServices.headerParser.parseHeadersWithArray(inputField.value,
                                                                  emailAddresses,
                                                                  names,
                                                                  fullNames);

                  // We need to expand the attendees, this happens in case the
                  // user entered comma-separated attendees in one field and
                  // then clicked OK without switching to the next line.
                  for (var j = 0; j < emailAddresses.value.length; j++) {
                      if (j > 0) attendee = attendee.clone();
                      copyNameAttributes(emailAddresses.value[j], names.value[j], attendee);
                      attendees.push(attendee);
                  }
              }
          }

          return attendees;
        ]]></getter>
      </property>

      <property name="organizer">
        <getter><![CDATA[
          let inputField;
          for (let i = 1; inputField = this.getInputElement(i); i++) {
              if (inputField && inputField.value != "") {
                  // The inputfield already has a reference to the attendee
                  // object, we just need to fill in the name.
                  let attendee = inputField.attendee.clone();

                  //attendee.role = this.getRoleElement(i).getAttribute("role");
                  attendee.participationStatus = this.getStatusElement(i).getAttribute("status");
                  // Organizers do not have a CUTYPE
                  attendee.userType = null;

                  // break the list of potentially many attendees back into individual names
                  let emailAddresses = {};
                  let names = {};
                  let fullNames = {};

                  MailServices.headerParser.parseHeadersWithArray(inputField.value,
                                                                  emailAddresses,
                                                                  names,
                                                                  fullNames);

                  if (emailAddresses.value.length > 0) {
                      // if the new address has no 'mailto'-prefix but seems
                      // to look like an email-address, we prepend the prefix.
                      // this also allows for non-email-addresses.
                      let email = emailAddresses.value[0];
                      if (email.toLowerCase().indexOf("mailto:") != 0) {
                          if (email.indexOf("@") >= 0) {
                              email = "MAILTO:" + email;
                          }
                      }
                      attendee.id = email;
                  }
                  if (names.value.length > 0) {
                      attendee.commonName = names.value[0];
                  }

                  if (attendee.isOrganizer) {
                      return attendee;
                  }
              }
          }

          return null;
        ]]></getter>
      </property>

      <method name="_resolveListByName">
        <parameter name="value"/>
        <body><![CDATA[
            let emailAddresses = {};
            let names = {};
            let fullNames = {};
            MailServices.headerParser.parseHeadersWithArray(value,
                                                            emailAddresses,
                                                            names,
                                                            fullNames);

            let abDir = this._findListInAddrBooks(names.value[0]);

            return abDir;
          ]]></body>
    </method>

    <method name="_findListInAddrBooks">
        <parameter name="entryname"/>
        <body><![CDATA[
            let allAddressBooks = MailServices.ab.directories;

            while (allAddressBooks.hasMoreElements()) {
              let abDir = null;
              try {
                abDir = allAddressBooks.getNext()
                                  .QueryInterface(Components.interfaces.nsIAbDirectory);
              } catch (ex) {
                cal.WARN ("[eventDialog] Error Encountered" + ex);
              }

              if (abDir != null && abDir.supportsMailingLists) {

                let childNodes = abDir.childNodes;
                while (childNodes.hasMoreElements()) {
                  let dir = null;
                  try {
                    dir = childNodes.getNext().QueryInterface(Components.interfaces.nsIAbDirectory);
                  } catch (ex) {
                    cal.WARN ("[eventDialog] Error Encountered" + ex);
                  }

                  if (dir && dir.isMailList && (dir.dirName == entryname)) {
                    return dir;
                  }
                }
              }
            }
            return null;
        ]]></body>
    </method>

    <method name="_getListEntriesInt">
        <parameter name="mailingList"/>
        <parameter name="attendees"/>
        <parameter name="allListsUri"/>
        <body><![CDATA[
            function in_list(aList, listid) {
              for (var l=0;l<aList.length;l++){
                if (aList[l]===listid) return true;
              }
              return false;
            }

            let addressLists = mailingList.addressLists;
            for (var i=0;i<addressLists.length;i++) {
              let abCard = addressLists.queryElementAt(i, Components.interfaces.nsIAbCard);
              let thisId = abCard.primaryEmail;
              if (abCard.displayName.length > 0) {
                  let rCn = abCard.displayName;
                  if (rCn.indexOf(",") >= 0) {
                      rCn = '"' + rCn + '"';
                  }
                  thisId = rCn + " <" + thisId + ">";
              }
              if (in_list(attendees, thisId)) continue;

              if (abCard.displayName.length > 0) {
                let ml = this._findListInAddrBooks(abCard.displayName);
                if (null!=ml){
                  if (in_list(allListsUri, ml.URI)) continue;
                  allListsUri.push(ml.URI);

                  this._getListEntriesInt(ml, attendees, allListsUri);

                  continue;
                }
              }

              attendees.push(thisId);
            }

            return attendees;
          ]]></body>
    </method>

    <method name="_getListEntries">
        <parameter name="mailingList"/>
        <body><![CDATA[

            let attendees = [];
            let allListsUri = [];

            allListsUri.push(mailingList.URI);

            this._getListEntriesInt(mailingList, attendees, allListsUri);

            return attendees;

          ]]></body>
    </method>

    <method name="_fillListItemWithEntry">
        <parameter name="listitem"/>
        <parameter name="entry"/>
        <parameter name="rowNumber"/>
        <body><![CDATA[
            let newAttendee = this.createAttendee(entry);
            let input = document.getAnonymousElementByAttribute(listitem, "anonid", "input");
            input.removeAttribute("disabled");
            input.setAttribute("id", "attendeeCol3#" + rowNumber);

            input.attendee = newAttendee;
            input.value = entry;
            input.setAttribute("value", entry);
            input.setAttribute("dirty", "true");
            if (input.getAttribute('focused') != '') {
                input.removeAttribute('focused');
            }

            let roleStatusIcon = document.getAnonymousElementByAttribute(listitem, "anonid", "rolestatus-icon");
            roleStatusIcon.removeAttribute("disabled");
            roleStatusIcon.setAttribute("id", "attendeeCol1#" + rowNumber);
            roleStatusIcon.setAttribute("class", "role-icon");
            roleStatusIcon.setAttribute("role", newAttendee.role);

            let userTypeIcon = document.getAnonymousElementByAttribute(listitem, "anonid", "usertype-icon");
            userTypeIcon.removeAttribute("disabled");
            userTypeIcon.setAttribute("id", "attendeeCol2#" + rowNumber);
            userTypeIcon.setAttribute("cutype", newAttendee.userType);
          ]]></body>
    </method>

    <method name="resolvePotentialList">
        <parameter name="input"/>
        <body><![CDATA[
            let fieldValue = input.value;
            if (input.id.length > 0 && fieldValue.length > 0) {
                let mailingList = this._resolveListByName(fieldValue);
                if (mailingList) {
                    let entries = this._getListEntries(mailingList);
                      if (entries.length > 0) {
                          let currentIndex = parseInt(input.id.substr(13));
                          let template = document.getAnonymousElementByAttribute(this, "anonid", "item");
                          let currentNode = template.parentNode.childNodes[currentIndex];
                          this._fillListItemWithEntry(currentNode, entries[0], currentIndex);
                          entries.shift();
                          let nextNode = template.parentNode.childNodes[currentIndex+1];
                          currentIndex++;
                          for each (let entry in entries) {
                              currentNode = template.cloneNode(true);
                              template.parentNode.insertBefore(currentNode, nextNode);
                              this._fillListItemWithEntry(currentNode, entry, currentIndex);
                              currentIndex++;
                          }
                          this.mMaxAttendees += entries.length;
                          for (let i = currentIndex; i <= this.mMaxAttendees; i++) {
                              let row = template.parentNode.childNodes[i];
                              let roleStatusIcon = document.getAnonymousElementByAttribute(row, "anonid", "rolestatus-icon");
                              roleStatusIcon.setAttribute("id", "attendeeCol1#" + i);

                              let userTypeIcon = document.getAnonymousElementByAttribute(row, "anonid", "usertype-icon");
                              userTypeIcon.setAttribute("id", "attendeeCol2#" + i);

                              let input = document.getAnonymousElementByAttribute(row, "anonid", "input");
                              input.setAttribute("id", "attendeeCol3#" + i);
                              input.setAttribute("dirty", "true");
                          }
                      }
                  }
              }
            ]]></body>
      </method>

      <method name="onModify">
        <body><![CDATA[
          let list = [];
          for (let i = 1; i <= this.mMaxAttendees; i++) {
              // retrieve the string from the appropriate row
              let input = this.getInputElement(i);
              if (input && input.value) {
                  // parse the string to break this down to individual names and addresses
                  let email = "";
                  let emailAddresses = {};
                  let names = {};
                  let fullNames = {};

                  MailServices.headerParser.parseHeadersWithArray(input.value,
                                                                  emailAddresses,
                                                                  names,
                                                                  fullNames);

                  if (emailAddresses.value.length > 0) {
                      // if the new address has no 'mailto'-prefix but seems
                      // to look like an email-address, we prepend the prefix.
                      // this also allows for non-email-addresses.
                      email = emailAddresses.value[0];
                      if (email.toLowerCase().indexOf("mailto:") != 0) {
                          if (email.indexOf("@") >= 0) {
                              email = "MAILTO:" + email;
                          }
                      }
                  }

                  let isdirty = false;
                  if (input.hasAttribute("dirty")) {
                      isdirty = input.getAttribute("dirty");
                  }
                  input.removeAttribute("dirty");
                  let entry = {
                      dirty: isdirty,
                      calid: email
                  };
                  list.push(entry);
              }
          }

          let event = document.createEvent('Events');
          event.initEvent('modify', true, false);
          event.details = list;
          this.dispatchEvent(event);
        ]]></body>
      </method>

     <method name="updateTooltip">
      <parameter name="targetIcon"/>
      <body><![CDATA[
        // Function setting the tooltip of attendeeicons based on their role
        if (targetIcon.className == "role-icon") {
            let role = targetIcon.getAttribute("role");
            // Set tooltip for rolenames

            const roleMap = {
              "REQ-PARTICIPANT": "required",
              "OPT-PARTICIPANT": "optional",
              "NON-PARTICIPANT": "nonparticipant",
              "CHAIR": "chair"
            }

            let roleNameString = "event.attendee.role." + (role in roleMap ? roleMap[role] : "unknown");
            let tooltip = cal.calGetString("calendar-event-dialog-attendees",
                                           roleNameString,
                                           (role in roleMap ? null : [role]));
            targetIcon.setAttribute("tooltiptext", tooltip);
        } else if (targetIcon.className == "usertype-icon") {
            let cutype = targetIcon.getAttribute("cutype");
            const cutypeMap = {
                "INDIVIDUAL": "individual",
                "GROUP": "group",
                "RESOURCE": "resource",
                "ROOM": "room",
                // I've decided UNKNOWN will not be handled.
            };

            let cutypeString = "event.attendee.usertype." + (cutype in cutypeMap ? cutypeMap[cutype] : "unknown");
            let tooltip = cal.calGetString("calendar-event-dialog-attendees",
                                           cutypeString,
                                           (cutypeString in cutypeMap ? null : [cutype]));
        }
      ]]></body>
      </method>

      <property name="documentSize">
        <getter><![CDATA[
            return this.mRowHeight * this.mMaxAttendees;
        ]]></getter>
      </property>

      <method name="fitDummyRows">
        <body><![CDATA[
          var self = this;
          var func = function attendees_list_fitDummyRows() {
              self.calcContentHeight();
              self.createOrRemoveDummyRows();
          }
          setTimeout(func, 0);
        ]]></body>
      </method>

      <method name="calcContentHeight">
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var items = listbox.getElementsByTagNameNS('*', 'listitem');
          this.mContentHeight = 0;
          if (items.length > 0) {
              var i = 0;
              do {
                  this.mRowHeight = items[i].boxObject.height;
                  ++i;
              } while (i < items.length && !this.mRowHeight);
              this.mContentHeight = this.mRowHeight * items.length;
          }
        ]]></body>
      </method>

      <method name="createOrRemoveDummyRows">
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var listboxHeight = listbox.boxObject.height;

          // remove rows to remove scrollbar
          var kids = listbox.childNodes;
          for (var i = kids.length - 1; this.mContentHeight > listboxHeight && i >= 0; --i) {
              if (kids[i].hasAttribute("_isDummyRow")) {
                  this.mContentHeight -= this.mRowHeight;
                  kids[i].remove();
              }
          }

          // add rows to fill space
          if (this.mRowHeight) {
              while (this.mContentHeight + this.mRowHeight < listboxHeight) {
                  this.createDummyItem(listbox);
                  this.mContentHeight += this.mRowHeight;
              }
          }
        ]]></body>
      </method>

      <method name="createDummyCell">
        <parameter name="aParent"/>
        <body><![CDATA[
          var cell = document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "listcell");
          cell.setAttribute("class", "addressingWidgetCell dummy-row-cell");
          if (aParent) {
              aParent.appendChild(cell);
          }
          return cell;
        ]]></body>
      </method>

      <method name="createDummyItem">
        <parameter name="aParent"/>
        <body><![CDATA[
          var titem = document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "listitem");
          titem.setAttribute("_isDummyRow", "true");
          titem.setAttribute("class", "dummy-row");
          for (var i = this.numColumns; i > 0; i--) {
              this.createDummyCell(titem);
          }
          if (aParent) {
              aParent.appendChild(titem);
          }
          return titem;
        ]]></body>
      </method>

      <!-- gets the next row from the top down -->
      <method name="getNextDummyRow">
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var kids = listbox.childNodes;
          for (var i = 0; i < kids.length; ++i) {
              if (kids[i].hasAttribute("_isDummyRow")) {
                  return kids[i];
              }
          }
          return null;
        ]]></body>
      </method>

      <!-- This method returns the <xul:listitem> at row numer 'aRow' -->
      <method name="getListItem">
        <parameter name="aRow"/>
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          if (listbox && aRow > 0) {
              var listitems = listbox.getElementsByTagNameNS('*', 'listitem');
              if (listitems && listitems.length >= aRow) {
                  return listitems[aRow - 1];
              }
          }
          return 0;
        ]]></body>
      </method>

      <method name="getInputFromListitem">
        <parameter name="aListItem"/>
        <body><![CDATA[
          return aListItem.getElementsByTagNameNS("*", "textbox")[0];
        ]]></body>
      </method>

      <method name="getRowByInputElement">
        <parameter name="aElement"/>
        <body><![CDATA[
          var row = 0;
          while (aElement && aElement.localName != "listitem") {
              aElement = aElement.parentNode;
          }
          if (aElement) {
              while (aElement) {
                  if (aElement.localName == "listitem") {
                      ++row;
                  }
                  aElement = aElement.previousSibling;
              }
          }
          return row;
        ]]></body>
      </method>

      <!-- This method returns the <xul:textbox> that contains
           the name of the attendee at row number 'aRow' -->
      <method name="getInputElement">
        <parameter name="aRow"/>
        <body><![CDATA[
          return document.getAnonymousElementByAttribute(this, "id", "attendeeCol3#" + aRow);
        ]]></body>
      </method>

      <method name="getRoleElement">
        <parameter name="aRow"/>
        <body><![CDATA[
          return document.getAnonymousElementByAttribute(this, "id", "attendeeCol1#" + aRow);
        ]]></body>
      </method>

      <method name="getStatusElement">
        <parameter name="aRow"/>
        <body><![CDATA[
          return document.getAnonymousElementByAttribute(this, "id", "attendeeCol1#" + aRow);
        ]]></body>
      </method>

      <method name="getUserTypeElement">
        <parameter name="aRow"/>
        <body><![CDATA[
          return document.getAnonymousElementByAttribute(this, "id", "attendeeCol2#" + aRow);
        ]]></body>
      </method>

      <method name="setFocus">
        <parameter name="aRow"/>
        <body><![CDATA[
          var self = this;
          var set_focus = function() {
              var node;
              if (typeof aRow == 'number') {
                node = self.getListItem(aRow);
              } else {
                node = aRow;
              }

              // do we need to scroll in order to see the selected row?
              var listbox =
                  document.getAnonymousElementByAttribute(
                      self, "anonid", "listbox");
              var firstVisibleRow = listbox.getIndexOfFirstVisibleRow();
              var numOfVisibleRows = listbox.getNumberOfVisibleRows();
              if (aRow <= firstVisibleRow) {
                  listbox.scrollToIndex(aRow - 1);
              } else {
                  if (aRow - 1 >= (firstVisibleRow + numOfVisibleRows)) {
                      listbox.scrollToIndex(aRow - numOfVisibleRows);
                  }
              }
              var input =
                  document.getAnonymousElementByAttribute(
                      node, "anonid", "input");
              input.focus();
          }
          setTimeout(set_focus, 0);
        ]]></body>
      </method>

      <property name="firstVisibleRow">
        <getter><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          return listbox.getIndexOfFirstVisibleRow();
        ]]></getter>
      </property>

      <method name="createAttendee">
        <body><![CDATA[
          var attendee = createAttendee();
          attendee.id = "";
          attendee.rsvp = "TRUE";
          attendee.role = "REQ-PARTICIPANT";
          attendee.participationStatus = "NEEDS-ACTION";
          return attendee;
        ]]></body>
      </method>

      <property name="numColumns">
        <getter><![CDATA[
          if (!this.mNumColumns) {
              var listbox =
                  document.getAnonymousElementByAttribute(
                      this, "anonid", "listbox");
              var listCols = listbox.getElementsByTagNameNS('*', 'listcol');
              this.mNumColumns = listCols.length;
              if (!this.mNumColumns) {
                  this.mNumColumns = 1;
              }
          }
          return this.mNumColumns;
        ]]></getter>
      </property>

      <property name="ratio">
        <setter><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          var rowcount = listbox.getRowCount();
          listbox.scrollToIndex(Math.floor(rowcount * val));
          return val;
        ]]></setter>
      </property>

      <method name="returnHit">
        <parameter name="element"/>
        <parameter name="noAdvance"/>
        <body><![CDATA[
          function parseHeaderValue(email, name, fullname) {
              if (name && name.match(/[<>@,]/)) {
                  return '"' + name + '" <' + email + '>';
              } else if (email.length) {
                  return fullname;
              } else {
                  return name;
              }
          }

          let arrowLength = 1;
          if (element.value.contains(",")) {
              let strippedAddresses = element.value.replace(/.* >> /, "");
              let emailAddresses = {};
              let names = {};
              let fullNames = {};

              MailServices.headerParser.parseHeadersWithArray(strippedAddresses,
                                                              emailAddresses,
                                                              names,
                                                              fullNames);

              emailAddresses = emailAddresses.value || [];
              names = names.value || [];
              fullNames = fullNames.value || [];

              if (emailAddresses.length > 1) {
                  element.value = parseHeaderValue(emailAddresses[0], names[0], fullNames[0]);
                  let insertAfterItem = this.getListItem(this.getRowByInputElement(element));
                  for (let i = 1; i < fullNames.length; i++) {
                      insertAfterItem = this.appendNewRow(false, insertAfterItem);
                      let textinput = this.getInputFromListitem(insertAfterItem);
                      textinput.value = parseHeaderValue(emailAddresses[i], names[i], fullNames[i]);
                  }
              }
              arrowLength = emailAddresses.length;
          }

          if (!noAdvance) {
              this.arrowHit(element, arrowLength);
          }
        ]]></body>
      </method>

      <method name="arrowHit">
        <parameter name="aElement"/>
        <parameter name="aDirection"/>
        <body><![CDATA[
          var row = this.getRowByInputElement(aElement) + aDirection;
          if (row) {
              if (row > this.mMaxAttendees) {
                  this.appendNewRow(true);
              } else {
                  var input = this.getInputElement(row);
                  if (input.hasAttribute("disabled")) {
                      return;
                  }
                  this.setFocus(row);
              }
              var event = document.createEvent('Events');
              event.initEvent('rowchange', true, false);
              event.details = row;
              this.dispatchEvent(event);
          }
        ]]></body>
      </method>

      <method name="deleteHit">
        <parameter name="aElement"/>
        <body><![CDATA[
          // don't delete the row if it's the last one remaining
          if (this.mMaxAttendees <= 2) {
              return;
          }

          var row = this.getRowByInputElement(aElement);
          this.deleteRow(row);
          if (row > 1) {
              row = row - 1;
          }
          this.setFocus(row);
          this.onModify();

          var event = document.createEvent('Events');
          event.initEvent('rowchange', true, false);
          event.details = row;
          this.dispatchEvent(event);
        ]]></body>
      </method>

      <method name="deleteRow">
        <parameter name="aRow"/>
        <body><![CDATA[
          // reset id's in order to not break the sequence
          var maxAttendees = this.mMaxAttendees;
          this.removeRow(aRow);
          var numberOfCols = this.numColumns;
          for (var row = aRow + 1; row <= maxAttendees; row++) {
              for (var col = 1; col <= numberOfCols; col++) {
                  var colID = "attendeeCol" + col + "#" + row;
                  var elem = document.getAnonymousElementByAttribute(this, "id", colID);
                  if (elem) {
                      elem.setAttribute("id", "attendeeCol" + col + "#" + (row - 1));
                  }
              }
          }
        ]]></body>
      </method>

      <method name="removeRow">
        <parameter name="aRow"/>
        <body><![CDATA[
          var listbox =
              document.getAnonymousElementByAttribute(
                  this, "anonid", "listbox");
          this.getListItem(aRow).remove();
          this.fitDummyRows();
          this.mMaxAttendees--;
        ]]></body>
      </method>
    </implementation>

    <handlers>
      <handler event="click" button="0"><![CDATA[
        function cycle(values, current) {
            let nextIndex = (values.indexOf(current) + 1) % values.length;
            return values[nextIndex];
        }

        let target = event.originalTarget;
        if (target.className == "role-icon") {
            if (target.getAttribute("disabled") != "true") {
                const roleCycle = [ "REQ-PARTICIPANT", "OPT-PARTICIPANT",
                                    "NON-PARTICIPANT", "CHAIR" ];

                let nextValue = cycle(roleCycle, target.getAttribute("role"));
                target.setAttribute("role", nextValue);
                this.updateTooltip(target);
            }
        } else if (target.className == "status-icon") {
            if (target.getAttribute("disabled") != "true") {
                const statusCycle = [ "ACCEPTED", "DECLINED", "TENTATIVE" ];

                let nextValue = cycle(statusCycle, target.getAttribute("status"));
                target.setAttribute("status", nextValue);
                this.updateTooltip(target);
            }
        } else if (target.className == "usertype-icon") {
            let fieldNum = target.getAttribute("id").split("#")[1];
            let inputField = this.getInputElement(fieldNum);
            if (target.getAttribute("disabled") != "true" &&
                !inputField.attendee.isOrganizer) {
                const cutypeCycle = [ "INDIVIDUAL", "GROUP", "RESOURCE", "ROOM" ];

                let nextValue = cycle(cutypeCycle, target.getAttribute("cutype"));
                target.setAttribute("cutype", nextValue);
                this.updateTooltip(target);
            }
        } else if (this.mIsReadOnly || this.mIsInvitation || target == null ||
                   (target.localName != "listboxbody" &&
                    target.localName != "listcell" &&
                    target.localName != "listitem")) {
            // These are cases where we don't want to append a new row, keep
            // them here so we can put the rest in the else case.
        } else {
            let lastInput = this.getInputElement(this.mMaxAttendees);
            if (lastInput && lastInput.value) {
                this.appendNewRow(true);
            }
        }
      ]]></handler>

      <handler event="popupshown"><![CDATA[
        this.mPopupOpen = true;
      ]]></handler>

      <handler event="popuphidden"><![CDATA[
        this.mPopupOpen = false;
      ]]></handler>

      <handler event="keydown"><![CDATA[
        if (this.mIsReadOnly || this.mIsInvitation) {
            return;
        }
        if (event.originalTarget.localName == "input") {
            switch (event.keyCode) {
                case KeyEvent.DOM_VK_DELETE:
                case KeyEvent.DOM_VK_BACK_SPACE:
                    if (!event.originalTarget.value) {
                        this.deleteHit(event.originalTarget);
                    }
                    event.stopPropagation();
                    break;
            }
        }
      ]]></handler>

      <handler event="keypress" phase="capturing"><![CDATA[
        // In case we're currently showing the autocompletion popup
        // don't care about keypress-events and let them go. Otherwise
        // this event indicates the user wants to travel between
        // the different attendees. In this case we set the focus
        // appropriately and stop the event propagation.
        if (this.mPopupOpen || this.mIsReadOnly || this.mIsInvitation) {
            return;
        }
        if (event.originalTarget.localName == "input") {
            switch (event.keyCode) {
                case KeyEvent.DOM_VK_UP:
                    this.arrowHit(event.originalTarget, -1);
                    event.stopPropagation();
                    break;
                case KeyEvent.DOM_VK_DOWN:
                    this.arrowHit(event.originalTarget, 1);
                    event.stopPropagation();
                    break;
                case KeyEvent.DOM_VK_TAB:
                    this.arrowHit(event.originalTarget, event.shiftKey ? -1 : +1);
                    break;
            }
        }
      ]]></handler>
    </handlers>
  </binding>

  <!-- the 'selection-bar' binding implements the vertical bar that provides
       a visual indication for the time range the event is configured for. -->
  <binding id="selection-bar">
    <content>
      <xul:scrollbox anonid="scrollbox" width="0" orient="horizontal" flex="1">
        <xul:box class="selection-bar" anonid="selection-bar">
          <xul:box class="selection-bar-left" anonid="leftbox"/>
          <xul:spacer class="selection-bar-spacer" flex="1"/>
          <xul:box class="selection-bar-right" anonid="rightbox"/>
        </xul:box>
      </xul:scrollbox>
    </content>

    <implementation>
      <field name="mRange">0</field>
      <field name="mStartHour">0</field>
      <field name="mEndHour">24</field>
      <field name="mContentWidth">0</field>
      <field name="mHeaderHeight">0</field>
      <field name="mRatio">0</field>
      <field name="mBaseDate">null</field>
      <field name="mStartDate">null</field>
      <field name="mEndDate">null</field>
      <field name="mMouseX">0</field>
      <field name="mMouseY">0</field>
      <field name="mDragState">0</field>
      <field name="mMargin">0</field>
      <field name="mWidth">0</field>
      <field name="mForce24Hours">false</field>
      <field name="mZoomFactor">100</field>
      <!-- constant that defines at which ratio an event is clipped, when moved or resized -->
      <field name="mfClipRatio">0.7</field>
      <field name="mLeftBox"/>
      <field name="mRightBox"/>
      <field name="mSelectionbar"/>

      <property name="zoomFactor">
        <getter><![CDATA[
          return this.mZoomFactor;
        ]]></getter>
        <setter><![CDATA[
          this.mZoomFactor = val;
          return val;
        ]]></setter>
      </property>

      <property name="force24Hours">
        <getter><![CDATA[
          return this.mForce24Hours;
        ]]></getter>
        <setter><![CDATA[
          this.mForce24Hours = val;
          this.initTimeRange();
          this.update();
          return val;
        ]]></setter>
      </property>

      <property name="ratio">
        <setter><![CDATA[
          this.mRatio = val;
          this.update();
          return val;
        ]]></setter>
      </property>

      <constructor><![CDATA[
        Components.utils.import("resource://gre/modules/Preferences.jsm");

        this.initTimeRange();

        // The basedate is the date/time from which the display
        // of the timebar starts. The range is the number of days
        // we should be able to show. the start- and enddate
        // is the time the event is scheduled for.
        this.mRange = Number(this.getAttribute("range"));
        this.mSelectionbar =
            document.getAnonymousElementByAttribute(
                this, "anonid", "selection-bar");
      ]]></constructor>

      <property name="baseDate">
        <setter><![CDATA[
          // we need to convert the date/time in question in
          // order to calculate with hours that are aligned
          // with our timebar display.
          var kDefaultTimezone = calendarDefaultTimezone();
          this.mBaseDate = val.getInTimezone(kDefaultTimezone);
          this.mBaseDate.isDate = true;
          this.mBaseDate.makeImmutable();
          return val;
        ]]></setter>
      </property>

      <property name="startDate">
        <setter><![CDATA[
          // currently we *always* set the basedate to be
          // equal to the startdate. we'll most probably
          // want to change this later.
          this.baseDate = val;
          // we need to convert the date/time in question in
          // order to calculate with hours that are aligned
          // with our timebar display.
          var kDefaultTimezone = calendarDefaultTimezone();
          this.mStartDate = val.getInTimezone(kDefaultTimezone);
          this.mStartDate.makeImmutable();
          return val;
        ]]></setter>
        <getter><![CDATA[
          return this.mStartDate;
        ]]></getter>
      </property>

      <property name="endDate">
        <setter><![CDATA[
          // we need to convert the date/time in question in
          // order to calculate with hours that are aligned
          // with our timebar display.
          var kDefaultTimezone = calendarDefaultTimezone();
          this.mEndDate = val.getInTimezone(kDefaultTimezone);
          if (this.mEndDate.isDate) {
              this.mEndDate.day += 1;
          }
          this.mEndDate.makeImmutable();
          return val;
        ]]></setter>
        <getter><![CDATA[
          return this.mEndDate;
        ]]></getter>
      </property>

      <property name="leftdragWidth">
        <getter><![CDATA[
          if (!this.mLeftBox) {
            this.mLeftBox =
                document.getAnonymousElementByAttribute(
                    this, "anonid", "leftbox");
          }
          return this.mLeftBox.boxObject.width;
        ]]></getter>
      </property>
      <property name="rightdragWidth">
        <getter><![CDATA[
          if (!this.mRightBox) {
              this.mRightBox =
                  document.getAnonymousElementByAttribute(
                      this, "anonid", "rightbox");
          }
          return this.mRightBox.boxObject.width;
        ]]></getter>
      </property>

      <method name="init">
        <parameter name="width"/>
        <parameter name="height"/>
        <body><![CDATA[
          this.mContentWidth = width;
          this.mHeaderHeight = height + 2;
          this.mMargin = 0;
          this.update();
        ]]></body>
      </method>

      <!-- given some specific date this method calculates the
           corrposonding offset in fractional hours -->
      <method name="date2offset">
        <parameter name="date"/>
        <body><![CDATA[
          var num_hours = this.mEndHour - this.mStartHour;
          var diff = date.subtractDate(this.mBaseDate);
          var offset = diff.days * num_hours;
          var hours = (diff.hours - this.mStartHour) + (diff.minutes / 60.0);
          if (hours < 0) {
              hours = 0;
          }
          if (hours > num_hours) {
              hours = num_hours;
          }
          offset += hours;
          return offset;
        ]]></body>
      </method>

      <method name="update">
        <body><![CDATA[
          if (!this.mStartDate || !this.mEndDate) {
              return;
          }

          // Calculate the relation of startdate/basedate and enddate/startdate.
          var offset = this.mStartDate.subtractDate(this.mBaseDate);
          var duration = this.mEndDate.subtractDate(this.mStartDate);

          // Calculate how much pixels a single hour and a single day take up.
          var num_hours = this.mEndHour - this.mStartHour;
          var hour_width = this.mContentWidth / num_hours;

          // Calculate the offset in fractional hours that corrospond
          // to our start- and end-time.
          var start_offset_in_hours = this.date2offset(this.mStartDate);
          var end_offset_in_hours = this.date2offset(this.mEndDate);
          var duration_in_hours = end_offset_in_hours - start_offset_in_hours;

          // Calculate width & margin for the selection bar based on the
          // relation of startdate/basedate and enddate/startdate.
          // This is a simple conversion from hours to pixels.
          this.mWidth = duration_in_hours * hour_width;
          var totaldragwidths = this.leftdragWidth + this.rightdragWidth;
          if (this.mWidth < totaldragwidths) {
              this.mWidth = totaldragwidths;
          }
          this.mMargin = start_offset_in_hours * hour_width;

          // Calculate the difference between content and container in pixels.
          // The container is the window showing this control, the content is the
          // total number of pixels the selection bar can theoretically take up.
          var total_width = this.mContentWidth * this.mRange - this.parentNode.boxObject.width;

          // Calculate the current scroll offset.
          var offset = Math.floor(total_width * this.mRatio);

          // The final margin is the difference between the date-based margin
          // and the scroll-based margin.
          this.mMargin -= offset;

          // Set the styles based on the calculations above for the 'selection-bar'.
          var style = "width: " + this.mWidth +
                      "px; -moz-margin-start: " + this.mMargin +
                      "px; margin-top: " + this.mHeaderHeight + "px;";
          this.mSelectionbar.setAttribute("style", style);

          var event = document.createEvent('Events');
          event.initEvent('timechange', true, false);
          event.startDate = this.mStartDate;
          event.endDate = this.mEndDate.clone();
          if (event.endDate.isDate) {
              event.endDate.day--;
          }
          event.endDate.makeImmutable();
          this.dispatchEvent(event);
        ]]></body>
      </method>

      <method name="setWidth">
        <parameter name="width"/>
        <body><![CDATA[
            var scrollbox =
                document.getAnonymousElementByAttribute(
                    this, "anonid", "scrollbox");
            scrollbox.setAttribute("width", width);
        ]]></body>
      </method>

      <method name="initTimeRange">
        <body><![CDATA[
          if (this.force24Hours) {
              this.mStartHour = 0;
              this.mEndHour = 24;
          } else {
              this.mStartHour = Preferences.get("calendar.view.daystarthour", 8);
              this.mEndHour = Preferences.get("calendar.view.dayendhour", 19);
          }
        ]]></body>
      </method>

      <method name="moveTime">
        <parameter name="time"/>
        <parameter name="delta"/>
        <parameter name="doclip"/>
        <body><![CDATA[
          var newTime = time.clone();
          var clip_minutes = 60 * this.zoomFactor / 100;
          if (newTime.isDate) {
              clip_minutes = 60 * 24;
          }
          var num_hours = this.mEndHour - this.mStartHour;
          var hour_width = this.mContentWidth / num_hours;
          var minutes_per_pixel = 60 / hour_width;
          var minute_shift = minutes_per_pixel * delta;
          var isClipped = Math.abs(minute_shift) >= (this.mfClipRatio * clip_minutes);
          if (isClipped) {
              if (delta > 0) {
                  if (time.isDate) {
                      newTime.day++;
                  } else {
                      if (doclip) {
                          newTime.minute -= newTime.minute % clip_minutes;
                      }
                      newTime.minute += clip_minutes;
                  }
              } else if (delta < 0) {
                  if (time.isDate) {
                      newTime.day--;
                  } else {
                      if (doclip) {
                          newTime.minute -= newTime.minute % clip_minutes;
                      }
                      newTime.minute -= clip_minutes;
                  }
              }
          }

          if (!newTime.isDate) {
              if (newTime.hour < this.mStartHour) {
                  newTime.hour = this.mEndHour - 1;
                  newTime.day--;
              }
              if (newTime.hour >= this.mEndHour) {
                  newTime.hour = this.mStartHour;
                  newTime.day++;
              }
          }

          return newTime;
        ]]></body>
      </method>
    </implementation>

    <handlers>
      <handler event="mousedown"><![CDATA[
        var element = event.target;
        this.mMouseX = event.screenX;
        var mouseX = event.clientX - element.boxObject.x;

        if (mouseX >= this.mMargin) {
            if (mouseX <= (this.mMargin + this.mWidth)) {
                if (mouseX <= (this.mMargin + this.leftdragWidth)) {
                    // Move the startdate only...
                    window.setCursor("w-resize");
                    this.mDragState = 2;
                } else if (mouseX >= (this.mMargin + this.mWidth - (this.rightdragWidth))) {
                    // Move the enddate only..
                    window.setCursor("e-resize");
                    this.mDragState = 3;
                } else {
                    // Move the startdate and the enddate
                    this.mDragState = 1;
                    window.setCursor("grab");
                }
            }
        }
      ]]></handler>

      <handler event="mousemove"><![CDATA[
        var mouseX = event.screenX;
        if (this.mDragState == 1) {
            // Move the startdate and the enddate
            var delta = mouseX - this.mMouseX;
            var newStart = this.moveTime(this.mStartDate, delta, false);
            if (newStart.compare(this.mStartDate) != 0) {
                newEnd = this.moveTime(this.mEndDate, delta, false);

                // We need to adapt this date in case we're dealing with
                // an all-day event. This is because setting 'endDate' will
                // automatically add one day extra for all-day events.
                if (newEnd.isDate) {
                    newEnd.day--;
                }

                this.startDate = newStart;
                this.endDate = newEnd;
                this.mMouseX = mouseX;
                this.update();
            }
        } else if (this.mDragState == 2) {
            // Move the startdate only...
            var delta = event.screenX - this.mSelectionbar.boxObject.screenX;
            var newStart = this.moveTime(this.mStartDate, delta, true);
            if (newStart.compare(this.mEndDate) >= 0) {
                if (!this.mStartDate.isDate) {
                    newStart = this.mEndDate;
                }
                else{
                    return;
                }
            }
            if (newStart.compare(this.mStartDate) != 0) {
                this.startDate = newStart;
                this.update();
            }
        } else if (this.mDragState == 3) {
            // Move the enddate only..
            var delta = mouseX - (this.mSelectionbar.boxObject.screenX +
                                  this.mSelectionbar.boxObject.width);
            var newEnd = this.moveTime(this.mEndDate, delta, true);
            if (newEnd.compare(this.mStartDate) < 0) {
                newEnd = this.mStartDate;
            }
            if (newEnd.compare(this.mEndDate) != 0) {
                // We need to adapt this date in case we're dealing with
                // an all-day event. This is because setting 'endDate' will
                // automatically add one day extra for all-day events.
                if (newEnd.isDate) {
                    newEnd.day--;
                }

                // Don't allow all-day events to be shorter than a single day.
                if (!newEnd.isDate || (newEnd.compare(this.startDate) >= 0)) {
                    this.endDate = newEnd;
                    this.update();
                }
            }
        }
      ]]></handler>

      <handler event="mouseup"><![CDATA[
        this.mDragState = 0;
        window.setCursor("auto");
      ]]></handler>
    </handlers>
  </binding>

</bindings>
