RadCombo with Checkbox and custom Javascript

[Gotcha]

Hi ,

I need some custom changes to be done on the current  RadCombo features:
1. Assuming I have a RadCombo with checkboxes and the list of items are
[ ] No Preferences
[ ] Product 1
[ ] Product 2
[ ] Product 3

When I check No Preferences (Index 0) , All already selected Items should be unchecked... Conversely, If I check One of the item from Product 1 - 3, It should uncheck No Preference.

2. Also, When I click on the Description, it should check and uncheck the checkbox...

3. The CheckedItemsText when It is "Display All In Input"... I need to show the whole String as long as it would fit within the Width of the Combo and if it exceeds certain length, I would like to truncate the string and append "..." at the end

Can anyone point me to where I can find information on how to access the checked elements, the CheckedItemText property within the RadCOmbo to achieve such a requirement using ClientSide Javascript?

Thanks

[Princy]

Hello Gotcha,

you can access the checked items with the client side as below.
Client side:

combo.get_checkedItems()
combo.get_checkedIndices()

Thanks,
Princy.

[Kalina]

Hi Gotcha,

I am afraid that the CheckBoxes feature does not support the scenario that you want to implement.
However you can try implementing RadComboBox Templates and add a custom JavaScript logic to be executed upon a CheckBox "check".
(Please note that RadComboBox Templates are not supported if you use Load on Demand via WebService.)

You can take a look at this online demo where a similar scenario is implemented.
Additionally you might find useful some of these Code Library projects.

Regards,
Kalina
the Telerik team