Planned
Last Updated: 25 Mar 2024 11:34 by ADMIN
Scheduled for 2024 Q2 (May)
Created by: Martin
Comments: 1
Category: DropDownTree
Type: Feature Request
3

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.

Completed
Last Updated: 28 Feb 2024 07:23 by ADMIN
Created by: James
Comments: 7
Category: DropDownTree
Type: Bug Report
0

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

 

Completed
Last Updated: 18 Jan 2024 07:50 by ADMIN
Release 2024 Q1
In the latest version of Kendo, the DropdownTree control no longer shows the placeholder when there's nothing selected when you use checkboxes.

Here's a dojo showing that it does not work in the latest version: Kendo UI Snippet | Kendo UI Dojo (telerik.com)

I
f you revert to the last Kendo version, you'll see that the placeholder is working as expected. 
Completed
Last Updated: 15 Jan 2024 07:59 by ADMIN
Release 2024 Q1

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

Completed
Last Updated: 03 Jan 2024 08:51 by ADMIN
Release R1.2024-Increment.2(31.Jan.2024)

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

  1. Open this Dojo example - https://dojo.telerik.com/UrALIJOK/3
  2. Open the DropDownTree
  3. Open the browser console and inspect the k-animation-container element
  4. 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]
Completed
Last Updated: 14 Dec 2023 11:45 by ADMIN
Release 2019.R2

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.

Unplanned
Last Updated: 16 Oct 2023 22:13 by Nathan

Context:

  1. Load on demand enabled
  2. Check Children is set true
  3. Remote api call to load data.
  4. 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>

    
Completed
Last Updated: 12 Apr 2023 14:39 by ADMIN
Release R2.2023-Increment.2(26.Apr.2023)

Bug report

Pressing the clear button of the DropDownTree does not change the component's value in the change event.

Reproduction of the problem

  1. Open this Dojo - https://dojo.telerik.com/aREzEWaK/13
  2. Open the browser console
  3. Select an item
  4. 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]
Unplanned
Last Updated: 01 Dec 2022 16:51 by Bill

Bug report

If the DropDownTree is configured without checkboxes (single selection), the X button shouldn't be present.

Reproduction of the problem

  1. Open this demo - https://demos.telerik.com/kendo-ui/dropdowntree/index
  2. 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]
Unplanned
Last Updated: 13 Sep 2022 17:21 by Boris
Created by: Nasser
Comments: 6
Category: DropDownTree
Type: Feature Request
12
Implement server filtering for the DropDownTree.
Unplanned
Last Updated: 05 Apr 2022 21:01 by gjb
Created by: gjb
Comments: 0
Category: DropDownTree
Type: Feature Request
2
The dropdown tree is very useful. 

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.
Declined
Last Updated: 11 Mar 2022 10:25 by ADMIN

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.

Completed
Last Updated: 07 Oct 2021 08:40 by ADMIN
Release 2020.R3.SP.next

Bug report

Reproduction of the problem

Dojo example: http://dojo.telerik.com/ePEPAtEl/3
Two scenarios:

  1. 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.

  2. 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 ]
Unplanned
Last Updated: 28 Sep 2021 11:52 by Mikael
Created by: Mikael
Comments: 0
Category: DropDownTree
Type: Bug Report
1

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

  1. Open the Dojo example
  2. 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 ]
Unplanned
Last Updated: 28 Apr 2021 09:18 by Derek
Created by: Derek
Comments: 0
Category: DropDownTree
Type: Bug Report
1

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]
Declined
Last Updated: 30 Mar 2021 14:25 by ADMIN
Created by: Hector
Comments: 1
Category: DropDownTree
Type: Bug Report
0

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" }
		]
	}
]
But if I set the data from a js object it shows the two levels correctly
$("#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
});
Previously it worked, I don't know which version of kendo stopped working.
How can I solve it with a single request to the server?
Unplanned
Last Updated: 05 Mar 2021 09:39 by ADMIN
Currently the scenario where both filtering and checkboxes.checkChildren are enabled is not supported. This is a very useful feature especially when the dropdown list is long.
Unplanned
Last Updated: 30 Jun 2020 10:27 by ADMIN

Please Implement Cleaner "Fully Loaded" Event Instead of Multiple onDataBound Checks as per recommended per this approach:  https://docs.telerik.com/kendo-ui/knowledge-base/dropdowntree-fully-loaded

That works fine, but if I have multiple DropDownTree elements on the page, this is a lot of extraneous code. Could this not be encapsulated within the library with a true event?

Perhaps it could be something like "contentLoaded" or "treeeInitialized". 

 

In my case I would then use it to fulfill a Promise or other actions.

Unplanned
Last Updated: 08 Jun 2020 06:05 by ADMIN
Created by: Saravanamanikandan
Comments: 1
Category: DropDownTree
Type: Bug Report
0

Hello Team,

 

Please refer this DoJo - http://dojo.telerik.com/@SaravanaMS/utINiRUq

We have a dropdowntree component added in a grid and when we collapse the dropdowntree options - dropdowm box stays at top.

 

Steps to reproduce - 

1. open all options from top to bottom 

2. collapse the option from bottom to top

3. once the top option is collapsed - dropdown box stays at top

Completed
Last Updated: 23 Mar 2020 08:50 by ADMIN
Release 2020.R1.SP.next

Bug report

Regression introduced in R1 2020.

Reproduction of the problem

Reproducible in the demo.

  1. Focus the DropDownTree.
  2. Click the "Check all" checkbox.

Current behavior

The DropDownTree items are not checked. The issue is reproducible only if the checkbox is clicked. Clicking its label, or checking the checkbox with the keyboard (Space key) checks all items as expected.

Expected/desired behavior

All items are checked.

Environment

  • Kendo UI version: 2020.1.219
  • jQuery version: x.y
  • Browser: [IE, Edge(Spartan) ]
1 2