Kendo UI Treelist rows disappears after editing - asp.net-mvc

Question

I use Kendo UI in ASP .NET MVC app. I have Kendo Treelist. Sometimes, after editing a row, all rows disappear, and I see only root element without child rows. Is it Kendo bug?Or I can prevent it? And when rows have disappeared, I refresh page, do the same changes and save treelist - the treelist works correctly.
var parsedXmlDataInJson = #Html.Raw(#ViewBag.XmlData); //jsonarray data
$( document ).ready(function() {
});
function ShowMessage(message,timeout) //пока сообщению пользователю в левом верхнем углу
{
var divMessage = $('#toggler');
if(divMessage.css('display') != 'none')
{
divMessage.clearQueue();
divMessage.stop();
divMessage.css('display','none');
}
if (timeout == 0)
divMessage.text(message).toggle('slow');
else
divMessage.text(message).toggle('slow').delay(timeout).toggle('slow');
}
var treelistds = new kendo.data.TreeListDataSource({ //CRUD for dataSource
transport: {
read: function(e) {
e.success(parsedXmlDataInJson);
},
update: function(e) {
var updatedItem = e.data;
$.each(parsedXmlDataInJson, function(indx, value) {
if (value.id == updatedItem.Id) {
value = updatedItem;
return false;
}
});
e.success();
},
create: function(e) {//Works for root element when editing only once - it's broke my treelist.
e.data.Id = GetId();
parsedXmlDataInJson.push(e.data);
e.success(e.data);
},
destroy: function(e) {
var updatedItem = e.data;
$.each(parsedXmlDataInJson, function(indx, value) {
if (value.id == updatedItem.Id) {
parsedXmlDataInJson.splice(indx, 1);
}
});
e.success();
},
parameterMap: function(options, operation) {
if (operation !== "read" && options.models) {
return {
models: kendo.stringify(options.models)
};
}
}
},
batch: false,
schema: {
model: {
id: "Id",
parentId: "parentId",
fields: {
Id: {
type: "number",
editable: true,
nullable: false
},
parentId: {
field: "parentId",
nullable: true
}
}
}
}
});
$("#treeList").kendoTreeList({
resizable: true,
dataSource: treelistds,
toolbar: ["create"],
columns: [{
field: "typeAndAttributes",
width:400
}, {
field: "text",
title: "Текст",
}, {
field: "cData",
title: "CDATA",
}, { //my custom command
command: ["edit", "destroy", "createchild", {
name: "commentOut",
text: "commentOut",
click: function(e) {
var dataItem = this.dataItem($(e.target).closest("tr")); ///my custom command
dataItem.commentedOut = !dataItem.commentedOut;
var isCommentedOut = dataItem.commentedOut;
var childNotes = this.dataSource.childNodes(dataItem);
childNotes.forEach(function(childModel, i) //
{
childModel.commentedOut = isCommentedOut;
SetChildrenIsCommentedOut(childModel, isCommentedOut);
})
//обновляем цвет и текст кнопок у всех элементов вызывая dataBound
$("#treeList").data("kendoTreeList").refresh();
},
}, ]
}],
messages: {
commands: {
edit: "Изменить",
destroy: "Удалить",
createchild: "Добавить"
}
},
dataBound: function(e) {
this.autoFitColumn(3);
Databound(e.sender, e.sender.table.find("tr"));
},
editable: true,
editable: {
mode: "popup",
template: kendo.template($("#popup-editor").html()),
window: {
width:800
}
},
edit: function(e) { //invokes when popup open
$("#date").kendoDateTimePicker({
});
$("#cDataEditor").kendoEditor({
tools: [
"formatting", "bold", "italic", "underline", "insertUnorderedList",
"insertOrderedList", "indent", "outdent", "createLink", "unlink"
],
resizable: {
content: true,
toolbar: true,
max:350
}
});
//my custom logic. Popup contains many fileds splitted from one model field
if (!e.model.isNew()) { //split typeAndAttrubites to popup's fileds
var fileds = e.model.typeAndAttributes.split(';').
filter(function(v) {
return v !== ''
});
e.container.find("#type").val(fileds[0]);
var length = fileds.length;
for (i = 1; i < length; i++) {
var keyAndValue = fileds[i].split('=');
if (keyAndValue[0] != "id")
e.container.find("#" + keyAndValue[0].trim()).val(keyAndValue[1].trim());
else
e.container.find("#xmlId").val(keyAndValue[1].trim());
}
}
},
save: function(e) { //invokes when saving
var splitter = "; ";
var inputValue = $("input[id='type']").val().trim();
if (e.model.type !== undefined) {
e.model.typeAndAttributes = e.model.type;
} else {
e.model.typeAndAttributes = inputValue;
}
var allInputs = $(":input[data-appointment=attributes]");
allInputs.each(function(index, input) { //collect inputs in one filed
var attrName;
var attrValue;
if (input.id != "id") {
attrName = input.id;
e.model[attrName];
} else {
attrName = "id";
attrValue = e.model["xmlId"];
}
//значение изменили и оно не пустое
if (attrValue !== undefined && attrValue !== "") {
if (attrValue == false)
return true;
e.model.typeAndAttributes += splitter + attrName + "=" + attrValue;
}
//my custom logic
else if (input.value.trim() && input.value != "on") {
e.model.typeAndAttributes += splitter + attrName + "=" + input.value.trim();
}
})
}
});
//рекурсивно помечаем ряды как закомментированные или нет
function SetChildrenIsCommentedOut(dataItem, isCommentedOut) {
var childNotes = $("#treeList").data("kendoTreeList").dataSource.childNodes(dataItem);
childNotes.forEach(function(childModel, i) {
childModel.commentedOut = isCommentedOut;
SetChildrenIsCommentedOut(childModel, isCommentedOut);
})
}
//Раскрашивает строки соответственно значению закомментировано или нет
function Databound(sender, rows) {
rows.each(function(idx, row) {
var dataItem = sender.dataItem(row);
if (dataItem.commentedOut) {
//обозначаем ряд как закомментированный
$(row).css("background", "#DCFFE0");
$(row).find("[data-command='commentout']").html("Раскомментировать");
} else {
//обозначаем ряд как незакомментированный
$(row).css("background", "");
$(row).find("[data-command='commentout']").html("Закомментировать");
}
})
}
});
var currentId = 0;
function GetId() { //генерирование Id для новых записей
var dataSource = $("#treeList").data("kendoTreeList").dataSource;
do {
currentId++;
var dataItem = dataSource.get(currentId);
} while (dataItem !== undefined)
return currentId;
}