Is is possible to disable message in single tagMode or display a fixed message

[Hüseyin]

For following configuration, when all childs of a node are selected, parent nodes are also counted. It causes misunderstanding. If it is not possible to count only leaves, how can a fixed message be displayed.

                checkboxes: { checkChildren: true },
                messages: {
                    singleTag: " selected"
                },
                tagMode: "single",

[Neli]

Hi Hüseyin,

The DropDownTree does not provide a possibility to configure a tagTemplate similar to the MultiSelect

When the DropDownTree has tagMode 'single', the message can be configured through the messages.singleTag configuration. However, as you pointed out, the count of the selected node is added to the message and the parents nodes are also counted. To avoid displaying the count of the nodes, I would suggest you to subscribe to the close event of the DropDownTree and hide the element that contains the nodes count. 

close: function(e) {
$('.k-dropdowntree .k-multiselect-wrap li.k-button>span:first-child').hide()
},

Here is a Dojo example where a custom message is displayed, without showing the total checked nodes count.

In case you think, that a tagTemplate would be a valuable addition to the DropDownTree I would suggest you to log the idea in our Feedback Portal. Based on the popularity it gain from the community it could be considered for future implementation. 

Regards,
Neli
Progress Telerik

[Hüseyin]

Thank you Neli.It worked.

[Andrea]

Still no way to exclude the parent nodes from the items count?

[Ivan Danchev]

Hello,

While excluding parent nodes from the items count is not yet implemented, it is possible to achieve such custom behavior through using the widget's API and jQuery. Here's a dojo example, which demonstrates how you can manually calculate the number of checked/unchecked leaf nodes, exclude parent nodes, and then set the message to the respective span element with jQuery.

Regards,
Ivan Danchev
Progress Telerik

[Andrea]

Almost… please check this scenario: https://dojo.telerik.com/AcUJuXuM/2

With:  checkChildren: true, autoClose: false, and the hide also on the change event.

Clicking on child nodes the count works, clicking on parent nodes the count fails.

[Ivan Danchev]

Hello,

When checkChildren is set to true checking/unchecking a parent node respectively checks/unchecks the child nodes. In that scenario the check event does not fire for the child nodes. This requires a change to the logic that calculates the number of checked child items in the check event:

check: function(e) {
  var dataItem = e.sender.dataItem(e.node);
  if(dataItem.hasChildren) {
    dataItem.checked ? count += dataItem.items.length : count -= dataItem.items.length;
  }
  else {
    dataItem.checked ? count++ : count--;
  }
  var string = "item(" + count + ") selected!";

  $('.k-dropdowntree .k-multiselect-wrap li.k-button>span:eq(1)').text(string);
}

Updated dojo example.

Regards,
Ivan Danchev
Progress Telerik

[Andrea]

Now is perfect! Thanks