Bug report
TreeView applies aria labels to items that don't have children on double-click 

Reproduction of the problem
1. https://demos.telerik.com/kendo-ui/treeview/remote-data-binding

2. Expand "Andrew Fuller"
3. Double click or press the right arrow key on an item that doesn't have children
4. Inspect the DOM for that item

Expected/desired behavior
aria-busy="true" shall not be added.

Environment
Kendo UI version: [all]
jQuery version: [all]
Browser: [all]

Hi Team,

I would like to request a way to add a destinationNode event argument during the drag event when an item is over a Kendo UI TreeView.  This way, it would be beneficial to set the status class based on the destinationNode's properties.

Thank you!

Bug report

According to the ARIA spec, the TreeView non-parent nodes should not have the aria-expanded. Otherwise they would be incorrectly described to assistive technologies as parent nodes.

Reproduction of the problem

1. Open this Demo - https://demos.telerik.com/kendo-ui/treeview/remote-data-binding
2. Inspect the li element for a node that has no children e.g Janet Leverling

Expected/desired behavior

The bottom nodes shouldn't have an aria-expanded attribute.

Environment

• Kendo UI version: 2022.3.913
• Browser: [all]

Hi Team,

I would like to request the functionality to move a node from within a folder to the outside of it by dragging it horizontally to the left. 

Thank you!

Hi Team,

I'd like to request the autoScroll functionality with Keyboard Navigation for the Kendo UI TreeView so if the user navigates below or above the page, the focused item will scroll into view.

Thank you!

Bug report

If you have some hotkeys on the page for example ALT + left arrow and ALT + right arrow and if the focus on TreeView these hotkeys are also affected tree and one can't prevent it.

Reproduction of the problem

https://dojo.telerik.com/@zdravkov/uNIkeReb

• **Kendo UI version: 2020.3.1118

Bug report

If the TreeView dataSource gets an error on a read request, the TreeView displays the "Request failed. Retry" message. However, on a subsequent successful request, the TreeView is not refreshed.

Reproduction of the problem

1. Run this dojo
2. Follow the steps listed in the dojo to reproduce the issue

Expected/desired behavior

The TreeView should be refreshed on a subsequent successful request.

Environment

• Kendo UI version: 2020.2.513
• Browser: [all]

Drag & Drop multiple nodes in a treeview from one parent to another.

If i have lots of children nodes that i need to move from one parent to another I have to do one at a time... it will be usefull to select multiple nodes and 

in one single drag&drop do the shift.

Thanks

 

I have incorporated the Kendo UI Treeview in my application by following closely the demo code, but Treeview does not work. The tree is shown on the web page, but the branches do not open and close when clicked on. Also, instead of the folder icon shown in the example, I just get the normal bullet points you would expect from a "<ul>" structure.

Hi,

 

There is an accessibility issue regarding MAS 4.2.1 - Object Information.

Using keyboard navigation and screen reader (Windows Narrator),

While the focus is on expanded tree item (with inner children), screen reader should not read all the children information in one go, it should read one by one.

See the attached video.

Can you help please?

 

Thanks,

Michal.

I am using Kendo tree view with drag and drop feature enabled in it. I am facing problem with it in my Samsung note 10 mobile. Where a normal swipe on the phone with the tree view is picked up as a drag and drop. Is there a way to differentiate between these two.

 

 

Bug report

The expandTo and expandPath methods of the TreeView do not change the data-expanded and aria-expanded attributes to "true".

Reproduction of the problem

1. Open this Dojo, which demonstrates two different TreeViews using the two methods.
2. Inspect the expanded items.

Current behavior

After the items are expanded, their data-expanded and the aria-expanded attributes are false.

Expected/desired behavior

After the items are expanded, their data-expanded and the aria-expanded attributes should be set to true.

Environment

• Kendo UI version: 2019.3.1023
• Browser: [all]

Bug report

HtmlPage1.zip

Reproduction of the problem

1. Run the attached page in the browser.
2. Take a 20 sec long heap snapshot. During these 20 sec click the "change" button to make changes to a specific node's data in the observable.

Current behavior

There are multiple detached span elements: screenshot
Memory consumption increases with every change: screenshot

Expected/desired behavior

Environment

• Kendo UI version: 2019.2.619
• jQuery version: x.y
• Browser: [all ]

Hi there,

We noticed an issue with our Numeric TextBox after a recent upgrade on Chrome.  We're currently on Version 73.0.3683.86 (Official Build) (64-bit), the latest version at the time of writing.  Our setup has a grid using a TreeView as an editor template.  The TreeView, in turn, uses a NumericTextBox inside its item template.  I've prepared a working demo that illustrates the issue.  If you click on the last column of the grid, expand the TreeView and click on one of the NumericTextboxes, you will see that it loses the focus as soon as you click on it.  As a result, it's impossible to input anything into those fields.  Any other browsers don't have this issue.

https://dojo.telerik.com/ukuTAYOB/4

We had a lot of issue reports from our clients this week so we're pretty sure it's a recent update from Chrome.  Please let me know if you need further clarification.  This is a fairly serious issue for us as it's affecting one of the main functionalities of our web application.  If you can provide a temporary workaround before the proper fix comes out, that'd be great.

 

Regards,

Brian Roth

The expand Icon of the treeview node is being reset, if another node is dropped above/below it.

To reproduce this behavior you can take the Drag and Drop demo of the treeview. In the initial state the "Furniture" node is expanded. If you take the "Decor" node and drop it above the furniture node, the "Furniture" node stays expanded but the icon changes to collapsed.

ADMIN EDIT: workaround: https://dojo.telerik.com/@bratanov/aLigiWaz

The issue does not manifest with R3 2019 SP1.

You can also monitor it in the following GitHub issue: https://github.com/telerik/kendo-ui-core/issues/4820

It would be nice to have more control over the item templates. ie, be allowed to more easily do stuff like:

• Make the item non-selectable, or only selectable by a child element.
• Make the item drag-and-droppable only via a grip element.
• Make the item template display as a block, not inline.

Kendo TreeView should return a promise.

When using treeview and setting loadOnDemand: true when you call expand on a node that has not been loaded there's no way to know when the loading has completed.

Returning a promise will allow the developer to know when the expansion has completed.

Currently you have to run this snippet to force only 1 selection from a tree. https://www.telerik.com/forums/allow-only-single-checkbox-to-be-checked-at-a-time#sky4SuHN70Cbrnl-6cNnhg

I would suggest this be added as a configuration option of the tree. something like singleSelect: true

When using datasource read action, the read action sends an id with to the read action for each node in the treeview. 

Could be nice if it was possible to send this id with the signalR read method. We need this Id in our solution to load the tree correctly.

So an option to use the node id in signalR would be very usefull.

It would be great, if I get a feature to allow to drag multiple selected nodes from treeview to drop to Treelist nodes. I need this by using MVC telerik not Kendo