or
filterMenuInit: function(e){
if(e.field === "City"){
e.container.data("kendoPopup").bind("open", function() {
var ddl = e.container.find("input").data("kendoDropDownList");
var ds = ddl.dataSource.data();
ds.push('Another City');
ddl.setDataSource(new kendo.data.DataSource({
data: ds
}));
});
}
}<li role="treeitem" class="k-item" data-uid="05d9dd05-11b4-48d1-8824-e8cd5b998eba" aria-selected="false " id="treeview7469_tv_active"><div class="k-top"><span class="k-in k-state-focused"> <span class="agendaitem-child"><span style="font-size: .9em;">a</span>. <a id="119366">test</a></span> <div class="iteminfo" data-order="1" data-id="119366" style="display: none"></div></span></div>
\\The edit-controls tag is dynamically added after tree is rendered
<div class="edit-controls" style="margin-left: .5em; margin-bottom: .2em;"><a href="#" class="action action-left has-icon btnNewSubItem" data-order="1"><span class="inner"><span class="ui-icon ui-icon-plusthick"></span><span class="button-text">Sub-item</span></span></a><a href="#" class="action action-right has-icon btnNewSubItemQuick" data-order="1"><span class="inner"><span class="ui-icon-rabbit"></span><span class="button-text">Q</span></span></a><div class="invisText" style="display: none; padding-left: 0%;"><input type="text" value="" class="field-thin" style="width: 60%;"><a href="#" class="action action-left has-icon btnAddQuickItem"><span class="innerquick"><span class="ui-icon ui-icon-quickadd"></span></span></a><a href="#" class="action action-right has-icon btnCancelQuickItem" data-order="1"><span class="innerquick"><span class="ui-icon ui-icon-x"></span></span></a><span class="validate" style="width: 100%; display: block;"></span></div></div></li>function onDrop(e) { if (e.dropPosition === 'over') { console.log("Drag", e.sourceNode, "over", e.destinationNode); console.log("SourceNode", e.sourceNode); } }