Provide a built-in functionality for the TreeList that would allow binding the component to data with the following structure:

const data = [
    { path: ['node1', 'node2'], property1: value, property2: value },
    { path: ['node1', 'node2', 'node3'], property1: value, property2: value },
];

The structure provides particular paths for the leaf nodes (last children) that determine the hierarchy within the component and additional fields that correspond to the columns' definition of the component. 

Hi, Team!

I would like to request functionality that would allow the rendering of connection lines between the items of the TreeList. This would allow the better visualization of the parent-child relationships:

The aggregates field is currently available only for kendoTreeListFooterTemplate:

https://www.telerik.com/kendo-angular-ui/components/treelist/aggregates/#toc-aggregating-flat-data

But in some scenarios, the aggregates need to be displayed inside the headers as well. Please provide the aggregates field in the kendoGridCellTemplate.

So far the only approach where this can be achieved is to use manual aggregation and some custom code:

   <ng-template kendoTreeListCellTemplate let-dataItem>
                    {{dataItem.name}} - <strong> {{ data.aggregates.name.count }} employee(s)</strong>
</ng-template>

Currently, the TreeList allows users to move rows using drag and drop. However, the available programmatic intervention options are quite limited. There is only one event triggered after a row is dropped, which restricts our ability to perform specific actions at different stages of the drag and drop process. For example, we are unable to prohibit certain rows from being dropped. We have certain business rules on what items are allowed on which level. So, we need to check these rules before the drop occurs.

In contrast, the TreeView component provides greater control and flexibility in this regard, offering additional intervention points and events.

Could these additional events be added to TreeList in the same way as for TreeView? We would greatly benefit from this feature.

Hi, Team!

As of now, the TreeList component does not have a designated property that allows the developers to modify its sizing. Similarly to the Grid, I would like to ask for the implementation of such a property. 

Hi,

The current behavior allows adding of additional content, but the checkbox is always rendered inside. The behavior should be similar to the Grid as when the checkbox column is used with a cell template it doesn't render the checkbox inside the column. Example in Grid component:

https://stackblitz.com/edit/angular-44syd7?file=src%2Fapp%2Fapp.component.ts

<kendo-grid-checkbox-column>
    <ng-template kendoGridCellTemplate let-dataItem let-rowIndex="rowIndex">
        My content
    </ng-template>
</kendo-grid-checkbox-column>

Thank you for your consideration.

Hello,

we need a new feature in the angular treelist component that can join the neighboring cells (horizontally and vertically) with the same content

example:

Hi,

It would be a good addition to the component if there is an option to span specific rows of the column in the TreeList component. Table example:

Thank you for your consideration.

Hello Telerik Team,

I am currently using your TreeList Component with the CheckboxColumnComponent.

Unfortunately it is not possible to configure the CheckboxColumnComponent to show the indeterminate state of items in the checkboxes.

On further research I discovered, that your TreeView Component supports this feature.

The following Screenshot has the TreeView Component  showing the indeterminate state of the Item "Furniture".

(Screenshot was taken from one of your own examples here: https://www.telerik.com/kendo-angular-ui/components/treeview/checkboxes/#toc-setup)

Comparing it with a TreeList that has checkboxes in the next screenshot, you can see that the parentitem with an indeterminate state, in this case the item with the name "examples", just shows  an empty checkbox.

 (Screenshot was taken from one of your own examples here: https://www.telerik.com/kendo-angular-ui/components/treelist/selection/#toc-checkbox-selection-of-child-rows)

Sadly i am not able to switch to the TreeView at this point in time, due to some conflicts this would create concerning my requirements for apearance and features of the application. Thats why i have the following question for you:

Would you consider adding this feature of showing indeterminate states to the CheckboxColumnComponent that is used in the TreeList Component in the future? Or do you have any advice on how to achieve this look similar to checkboxes from the TreeView in the TreeList?

Thank you in advance and best regards 

F.Jung

Provide sticky column feature, the same as in Grid:

https://www.telerik.com/kendo-angular-ui/components/grid/columns/sticky/

Autosize on treelist with locked columns does not work

When the width of the grid exceeds the column lengths, you would expect autosize to expand and fill the rest of the space evenly.

https://stackblitz.com/edit/angular-7rxada-84kfzy?file=src/app/app.component.ts

Similar to https://github.com/telerik/kendo-angular/issues/3248

The drag selection is enabled immediately after dragging the cursor a little (1-2px). This causes issues when a row is expanded/collapsed first then clicking the checkbox as sometimes, the cursor is dragged in the checkbox. Then drag selection resets the previously selected rows. Here is a screencast of the issue:

https://screenrec.com/share/y6pPGWjUZH

1. Expand a row
2. Click and drag the cursor in the checkbox (1-2px)

https://stackblitz.com/edit/angular-qnaphv-2nszye

The drag selection should not be enabled.

The Grid has a logic for enabling the drag selection after N-pixels of dragging. Could be reused in TreeList as well.

Hi,

Please add a multiSortKey option to the TreeList component as well. There is currently such option only for the Grid:

https://www.telerik.com/kendo-angular-ui/components/grid/api/MultipleSortSettings/#toc-multisortkey

thanks

Hi Kendo Team,

Could you add a checkboxOnly functionality to the TreeList component selection SelectableSettings => checkboxOnly setting similar to the Grid component SelectableSettings:

https://www.telerik.com/kendo-angular-ui/components/grid/api/SelectableSettings/#toc-checkboxonly

Thank you.

Please add a feature that allows to create the footer template only for specific nodes. 

Thanks