TL;DR: The DropDownList widget cannot be closed by clicking the arrow-icon.

The long story:

After the DropDownList has been opened once, it closes and reopens every time the user clicks the arrow-icon. Closing the DropDownList still works when clicking anywhere on the dropDown except the arrow-icon (or rather the button around it) or anywhere else but the dropDown. This DOJO demonstrates the problem. Animations have been disabled to allow easier reproduction (with animations on, the problem appears only occasionally, probably because of timing issues).

If you look closely, you will notice that the dropDown closes when the mouse button is pressed and reopens when the mouse button is released (this is when the click event is fired). Therefore, the problem can be (temporarily) mitigated by suppressing the mousedown event on the dropDown's wrapper element.

After updating the version of Kendo we are using to 2022.1.412 we noticed a weird behavior in the DropDownLists. Clicking the drop down arrow once opens the list, then clicking the arrow again closes and re-opens the list instead of just closing it. Note that this does not happen while clicking on any other part of the drop down to close it, selecting an item from the drop down, or clicking outside the drop down list. It only happens while clicking on the arrow button.

Behavior can be seen in the demos on these pages:

https://demos.telerik.com/kendo-ui/dropdownlist/template

https://demos.telerik.com/kendo-ui/dropdownlist/grouping

https://demos.telerik.com/kendo-ui/dropdownlist/cascadingdropdownlist

However the behavior does not appear on these pages:

https://demos.telerik.com/kendo-ui/dropdownlist/virtualization

https://demos.telerik.com/kendo-ui/dropdownlist/serverfiltering

 

Steps to Reproduce:

• Click the drop down arrow to open the drop down list
• Click on the arrow again and observe the list close and re-open (Note it sometimes doesn't happen right away but takes a few tries)

As my grid edit forms have expanded past the default popup, I have been using editable template. These are bound with MVVM and work well. But not all options work via MVVM like the cascade options below. I would like to use the cascade options in this scenario. It would be great to have all configuration options available via MVVM.

            <select id="ParentID" name="ParentID"
                    style="width: 100%"
                    data-role="dropdownlist"
                    data-text-field="Name"
                    data-value-field="ID"
                    data-cascade-from="ImprovementTargetID"
                    data-cascade-from-field="ImprovementTargetID"
                    data-cascade-from-parent-field="ID"
                    data-source="PEDropDownDataSource"
                    data-option-label="Pick PE..."
                    data-value-primitive="true"
                    data-bind="value:ParentID">
            </select>

The dropDownList supports several keyboard shortcuts as documented in https://demos.telerik.com/kendo-ui/dropdownlist/keyboard-navigation. However, when e.g. a KeyDown event is triggered (and handled) by the widget, its propagation is not stopped. This behavior can be witnessed in this DOJO.

In our case, we e.g. use dropDownLists inside dialog windows that can be closed via ESC. When pressing ESC while a dropDownList is focused, this not only closes the dropDownList (as expected), but also closes the dialog.

The dropDownList should stop the propagation of events that it handled.

Hi Team,

I'd like to request the functionality to add a Clear Button  for the Kendo UI DropDownList similar to the ComboBox.  

Thank you!

Bug report

The height of the DropDownList popup is incorrect when using LESS themes.

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/@martin.tabakov@progress.com/oMohisUF/2
2. Open the DropDownList

Current behavior

The popup height is incorrect.

Expected/desired behavior

The popup height should be big enough to fit the list.

Environment

• Kendo UI version: 2022.1.119
• Browser: [all]

The Kendo UI DropDownList allows the user to entera filter which is applied on the available items (documented here: https://docs.telerik.com/kendo-ui/api/javascript/ui/dropdownlist/configuration/filter). As soon as a filter term entered by the user is applied to the dataSource, the selected item is no longer marked. Usually, the .k-state-selected CSS class is set on the corresponding DOM element.

This behavior can also be reproduced in the official Kendo UI Dojo about filtering: https://dojo.telerik.com/eVuSopuj

Bug report

When filtering is performed in the parent widget and an item is selected, duplicate read request are sent to the remote end point for the child widget data.

Reproduction of the problem

1. Open the Dojo
2. In the parent DropDownList search "be" and select "Beverages"

Current behavior

Two requests are sent to the 'Products' DropDownList read end point.

Expected/desired behavior

There should be a single request for reading the widget`s data.

The issue is a regression since 2019 R3 SP1 (2019.3.1023)

Environment

• Kendo UI version: 2021.3.1109
• Browser: [all ]

Bug report

In a virtual DropDownList with a value set, the first item is marked as selected as well. The issue occurs when using jQuery 3.4.1 or later.

Reproduction of the problem

1. Open this Dojo example. - https://dojo.telerik.com/@martin.tabakov@progress.com/UkOmiYEj
2. Open the DropDownList.

Current behavior

Two items are marked as selected.

Expected/desired behavior

Only the item with value 3 should appear as selected.

Environment

• Kendo UI version: 2021.3.914
• **jQuery version: 3.4.1 and later
• Browser: [all]

In Combox, DropDownList, Multiselect widgets, when grouping, the first item is incorrectly rendered (inconsistently with the others).

This can be observed as of today on:

1. https://demos.telerik.com/kendo-ui/combobox/grouping
2. https://demos.telerik.com/kendo-ui/dropdownlist/grouping
3. https://demos.telerik.com/kendo-ui/multiselect/grouping

Additionaly, when groupTemplate is defined, it's ignored for the first item: https://docs.telerik.com/kendo-ui/api/javascript/ui/dropdownlist/configuration/grouptemplate

Ticket ID : 1518454

Thank you for your kind reply.

I saw the link you sent me.(https://dojo.telerik.com/eHUBOtOW/2)

When a Korean keyword is searched, the cursor is pushed back.

It works fine in Chrome, but the same thing happens in IE.

Our company's system have to use IE.

 

Bug report

When the DropDownList is used as an editor in the Gantt, sometimes the DropDownList popup closes on double-click. The issue is observed when the trackpad's click is set to light and a double-click is performed.

Reproduction of the problem

1. On a Macbook Pro set the trackpad click to light
2. Run this dojo
3. Double-click on an item in the title column

Current behavior

Sometimes the DropDownList opens and closes.
Screencast

Expected/desired behavior

DropDownList should remain open

Environment

• Kendo UI version: 2021.1.330
• Browser: [all]

Bug report

Even if no filtering is configured, when the delay option is different than 0 navigation between the items in the DropDownList does not work correctly.

Reproduction of the problem

1. Open the Demo
2. Focus/Open the DropDownList
3. Click 's' - Small is selected
4. Click 'l' - Large is selected
5. Repeat multiple times

Current behavior

The correct item is not always selected. In the demo, no delay is configured, but the default value is 500. The delay is supposed to affect the DropDownList only when filtering is enabled.

Note: Currently, when the filter option is configured, changing selection without opening the DropDownList is not possible.
https://dojo.telerik.com/@iankodj/AhUgaXuf

Workaround

Set delay to 0 - Dojo

Expected/desired behavior

The selection of the items should be correctly changed when typing, even if a delay different than 0 is configured.
Also, it should be possible to change the selected item by typing in the keyboard even if the filter option is set and the DropDownList is closed.

Environment

• Kendo UI version: 2021.1.224
• Browser: [all]

Add a filterOptions option that will enable users to configure attributes, placeholder, etc for the search box of the DropDownList. 

I have upgraded a huge project we have, from Kendo UI 2017 to the latest version.
I managed to fix all the incompatibility issues that I had with the latest version and now it's ready to go live.

In the final regression tests our customer found a bug and now we are stack and cannot deploy the project.

Here is the problem:

In the DropdownList, if you type something and then press the clear button, the change event is firing two times. One with the value that you typed before and then one again with an empty value (the right one). The biggest problem is that there is no way to determine that the first event is coming from the clear button and not from the user, so I cannot find any workaround this.

I searched and I found that this started after this change.

You can check this dojo for a reproduction of the problem.
Steps:
Type "it" in the dropdownlist,
Wait for the items to popup
Don't select any item but press the clear button of the dropdownlist
You can see the attached image the wrong events.
If you select a version after 2019 R3, the change event is firing twice. If you select an older version the change event is not firing at all.

I can understand a change event with an empty value and I don't have any problem with that, but the first event is totally wrong.
Is there any quick solution to this so we can catch the deadline and deploy the new version of our project?

Thank you for your time,
John Dendrinos

It will be very nice if the AutoComplete, DropDownList, ComboBox, and MultiSelect components have the floating label functionality like the TextBox widget 

 

Bug report

In DropDownList when virtualization is enabled and the value of the widget is set through the value method, the cascade event is fired twice.

Reproduction of the problem

1. Open the Dojo example.
2. Click the 'Set value' button

Current behavior

The cascade event will be triggered twice.

Expected/desired behavior

The cascade event should be triggered only once.

Environment

• Kendo UI version: 2010.2.617
• Browser: [all ]

When there is no filter enabled in the DropDownList it is possible to select an item just by typing, without opening the DropDownList popup.

https://dojo.telerik.com/ELEfIZIx

It would be useful if such an option is available when the filter of the widget is configured. 

Bug report

Reproduction of the problem

Dojo example

1. Inspect the value in the pre tag above the DropDownList and the selected value in the DropDownList.

Current behavior

The model has the extra spaces trimmed and there is a single space between the words:

<pre class="ng-binding">Magazzini Alimentari Riuniti</pre>

In the DropDownList the value properly contains 2 spaces between the words.

Expected/desired behavior

In the data the selected item has 2 spaces between the words: Magazzini Alimentari Riuniti
The model value should be identical to the data and the extra spaces should not be trimmed.

Environment

• Kendo UI version: 2020.2.617
• jQuery version: x.y
• Browser: [all]

https://dojo.telerik.com/iliKAqUr

1. select "Oranges" from the dropdown
2. press "Change value to 'Bananas'" button
3. press "Sort" button
4. select "Oranges" from the dropdown

Expected: should see two events for "Changed to Oranges" but only see one
Actual: status only shows one value change event from the first selection of "Oranges"

It seems this issue was introduced with the fix for https://github.com/telerik/kendo-ui-core/issues/4496

The introduction of _oldText in the _change method of kendo.list.js has introduced a flaw in the value change detection for DropDownList

The above dojo presents a way to short-circuit the issue since it is not easy to show the _oldText issue since the index check works as a fallback.