Bug report
DropDownTree node's subitems are not visible when expanding since 2025.1.211
Reproduction of the problem
Dojo: https://dojo.telerik.com/ovMLqOza
2. Check one or two nodes under Furniture
3. Expand Decor node, you can see child node is hidden
Current behavior
Decor children not visible
Environment
jQuery: 3.4.1
Kendo UI version: 2025.1.211 or newer
Browser: [all ]
Hi Team,
I would like to request the functionality that if a user checks the parent, the children are all checked. But, if the children are deselected, the parent should still be checked.
Thank you!
Bug report
If the DropDownTree is configured without checkboxes (single selection), the X button shouldn't be present.
Reproduction of the problem
- Open this demo - https://demos.telerik.com/kendo-ui/dropdowntree/index
- Select an item from the DropDownTree
Current behavior
The clear button appears
Expected/desired behavior
The clear button shouldn't be present.
Environment
- Kendo UI version: 2022.3.1109
- Browser: [all]
Bug report
DropDownTree as a row editor does not clear chips when x button is clicked. Select All option does not select items
this.dataSource.data() does not have items
Regression with 2022.1.119
Reproduction of the problem
Open this Dojo example - https://dojo.telerik.com/oXizEQac
Open Name column row filter DropDownTree
Select All shall select all items. Clearing items shall clear them
Environment
Kendo UI version: 2022.1.119 or newer
Browser: [all]
In cases when we have loadOnDemand set to true and we want to populate the value of the DropDownTree initially we need a way to check if this value is part of the available options. One possible solution is adding a valueMapper function similar to the one use in virtualization scenarios.
Here's a dojo showing that it does not work in the latest version: Kendo UI Snippet | Kendo UI Dojo (telerik.com)
If you revert to the last Kendo version, you'll see that the placeholder is working as expected.
Hi,
When using the dropdown tree on safari using the bootstrap themes when the page has scrollbars and clicking on the dropdown the page scrolls up, even though there is available space:
Please see this Dojo which replicates the issue:
https://runner.telerik.io/fullscreen/uwoBEKiT/2
Open the above URL in Safari, chick on the dropddown and the page scrolls up and the dropdown is no longer visible.
Regards
James Qu
inn
Hi Team,
It's an issue in keyboard navigation support for DropDown Tree, where am not able to scroll to the end node. Given the scenario in below link
https://dojo.telerik.com/IROwUrot
Am using 2019.2.619 version.
Regards,
Minati
Bug report
If you prevent the DropDownTree's close event, the k-animation-container-shown class is removed from the popup.
Reproduction of the problem
- Open this Dojo example - https://dojo.telerik.com/UrALIJOK/3
- Open the DropDownTree
- Open the browser console and inspect the k-animation-container element
- Blur the DropDownTree
Current behavior
The k-animation-container-shown class is removed from the popup element.
Expected/desired behavior
The k-animation-container-shown class should be preserved.
Environment
- Kendo UI version: 2023.3.1010
- Browser: [all]
Enhancement
Currently, when checkboxes are enabled, the selected items cannot be sent to a remote end-point via form submit. Research possible workarounds for the senario - rendering an additional input elements, parsing or other suitable approach that allows submitting the value of the widget.
Context:
- Load on demand enabled
- Check Children is set true
- Remote api call to load data.
- Attached sample code is using kendo services.
Issue or Scenario:
When you select the top node or checkbox, it shows 1 item(s) selected. However, when you expand and deselect child nodes or checboxes, the single tag message will removed and blank field is present.
please find below code and attached gif file, these files will give you clear understanding on the issue with dropdowntree.
<!--BELOW IS THE CODE SAMPLE ON THIS BUG -->
<!DOCTYPE html>
<html>
<head>
<base href="https://demos.telerik.com/kendo-ui/dropdowntree/remote-data-binding">
<style>html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }</style>
<title></title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.common-material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.material.mobile.min.css" />
<script src="https://kendo.cdn.telerik.com/2019.2.514/js/jquery.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2019.2.514/js/kendo.all.min.js"></script>
</head>
<body>
<div id="example">
<div class="demo-section k-content">
<input id="dropdowntree" style="width: 100%;" />
</div>
<script>
var serviceRoot = "https://demos.telerik.com/kendo-ui/service";
homogeneous = new kendo.data.HierarchicalDataSource({
transport: {
read: {
url: serviceRoot + "/Employees",
dataType: "jsonp"
}
},
schema: {
model: {
id: "EmployeeId",
hasChildren: "HasEmployees"
}
}
});
$("#dropdowntree").kendoDropDownTree({
placeholder: "Select ...",
dataSource: homogeneous,
height: "auto",
checkboxes: { checkChildren: true },
dataTextField: "FullName",
clearButton: true,
checkAll: false,
autoClose: false,
tagMode: "single",
loadOnDemand: true
});
</script>
</div>
</body>
</html>
Bug report
Pressing the clear button of the DropDownTree does not change the component's value in the change event.
Reproduction of the problem
- Open this Dojo - https://dojo.telerik.com/aREzEWaK/13
- Open the browser console
- Select an item
- Press the clear button
Current behavior
The value is the same as before pressing the button
Expected/desired behavior
The value should be an empty string after pressing the clear button
Environment
- Kendo UI version: 2023.1.117
- Browser: [all]
I have a suggestion to improve this, which would be highly appreciated by my customers:
Add a suggest possibility, the same as the suggest possibility that already is available on the combobox.
People start to type in the search box, most of time finding the one option they need, than they first have to select the option (mouse or arrows, plus enter). It would be nice if the result (when it is one result) is already selected and they should have only to press enter.
Using setDataSource method on a working DropDownTree, with same initial settings leads to not working clea button and not expanding a collapsed node.
Dojo: https://dojo.telerik.com/uLUNudEJ
Steps (clear button):
1. Open dojo and check that everything works correctly
2. Click reload button (calls setDataSource)
3. Clear all button does not work and cannot deselect the item from the tag's clear button.
Steps (expand):
1. Open dojo and open popup to see everything expands as expected
2. Click reload
3. Open popup
4. The last (initially collapsed) node cannot be expanded.
Bug report
Reproduction of the problem
Dojo example: http://dojo.telerik.com/ePEPAtEl/3
Two scenarios:
-
The DropDownTree's height is set to "auto" and there are enough nodes in the embedded treeview, so that the when the popup shows up a vertical scrollbar appears. In Chrome and IE, when the scrollbar appears the page is scrolled down automatically, which causes the popup to close.
-
height is not set explicitly in the DropDownTree (remove the setting from the dojo example). If the browser window is resized so that there isn't enough space for the whole popup to be displayed, on the popup showing up, the same behavior as in 1. is observed.
Current behavior
The popup closes automatically.
Expected/desired behavior
The popup remains open.
Environment
- Kendo UI version: 2020.3.915
- jQuery version: x.y
- Browser: [Chrome 85 | IE11 ]
Bug report
The DropDownTree validation error message appears when the widget gets opened. The message appears before the user is able to select an item. The behavior is not consistent with the validation of the rest of the widgets, such as DropDownList, for example.
Reproduction of the problem
- Open the Dojo example
- Expand the DropDownTree
Scenario 2: DropDownTree in a Form - Dojo
Current behavior
The DropDownTree is validated on open, thus it is marked as invalid before the user has the possibility to select an item.
Expected/desired behavior
The validation of the DropDownList should be consistent with the rest of the widgets. It should be validated when it is focused out
Environment
- Kendo UI version: 2021.3.914
- Browser: [all ]
Bug report
The DropDownTree's refresh API method re-renders only the noDataTemplate and the footerTemplate. The nodes are not re-rendered.
Reproduction of the problem
Current behavior
Only the noDataTemplate and the footerTemplate are re-rendered.
Expected/desired behavior
The method should also re-render the nodes, similarly to the DropDownList's refresh method, which re-renders its items.
Environment
- Kendo UI version: 2021.1.330
- jQuery version: x.y
- Browser: [all]
Hi
I have a problem with the DropDownTree component.
From a remote data source type json I am getting a tree with two levels of data but it only shows the first level.
Code:
$("#dropdowntree").kendoDropDownTree({
dataSource: {
transport: {
read: {
url: "/api/getData",
type: "POST",
dataType: "json",
contentType: "application/json; charset=utf-8"
}
}
},
checkboxes: true
});Response:
[
{
text: "Furniture", expanded: true, items: [
{ text: "Tables & Chairs" },
{ text: "Sofas" },
{ text: "Occasional Furniture" }
]
},
{
text: "Decor", items: [
{ text: "Bed Linen" },
{ text: "Curtains & Blinds" },
{ text: "Carpets" }
]
}
]$("#dropdowntree").kendoDropDownTree({
dataSource: {
data: [
{
text: "Furniture", expanded: true, items: [
{ text: "Tables & Chairs" },
{ text: "Sofas" },
{ text: "Occasional Furniture" }
]
},
{
text: "Decor", items: [
{ text: "Bed Linen" },
{ text: "Curtains & Blinds" },
{ text: "Carpets" }
]
}
]
},
checkboxes: true
});How can I solve it with a single request to the server?