In cases when we have loadOnDemand set to true and we want to populate the value of the DropDownTree initially we need a way to check if this value is part of the available options. One possible solution is adding a valueMapper function similar to the one use in virtualization scenarios.
Hi,
I have a DropDownTree with checkboxes, like so:
$("#cbxWorkZones").kendoDropDownTree({
placeholder: "Select Work Zones...",
dataTextField: "name",
dataValueField: "id",
valuePrimitive: true,
checkboxes: true,
checkAll: true,
autoClose: false,
autoBind: false,
dataSource: data.workZones
});
I get an instance of it like so:
var wz = $('#cbxWorkZones').data("kendoDropDownTree");
I evaluate value and get this: [] meaning, there are no values selected.
Then I set its value like so:
wz.value(["8", "6"]);
After setting the values, I evaluate value again, and I get this: [8,6,8,6]
Why are the values duplicated?
Thanks!
Juan
Bug report
Unexpected change event triggering when using value() method of remote datasource DropDownTree with checkboxes and autoBind false
Reproduction of the problem
- Run the following Dojo
- Click on Load button to set the value of the Child item
Current behavior
Script runs through datasource read else, then through datasource read if and then DropDownTree's change event is fired.
NOTE: if there is no setTimeout or if the two nodes are loaded at the same time with no if else clause, then the issue is not reproducible.
Expected/desired behavior
DropDownTree's change event is not fired, when value() method is called.
Environment
- Kendo UI version: 2019.2.619
- Browser: [all]
Similar fixed issue: #4352
The problem is easily reproduced using the widget demo page https://demos.telerik.com/kendo-ui/dropdowntree/index
Simply switch to the High Contrast theme; the k-widget element is lacking the border-radius style hence looks different to the other widgets.
It looks like the k-dropdowntree class is missing from the following style rule:
.k-autocomplete, .k-block, .k-calendar-container, .k-colorpicker, .k-combobox, .k-datepicker, .k-datetimepicker, .k-drag-clue, .k-dropdown, .k-dropdown-wrap, .k-editor-inline, .k-grid .k-filter-options, .k-grouping-header .k-group-indicator, .k-inline-block, .k-list-container, .k-multiselect, .k-notification, .k-numeric-wrap, .k-numerictextbox, .k-picker-wrap, .k-slider-selection, .k-slider-track, .k-split-button, .k-textbox, .k-tile, .k-timepicker, .k-tooltip, .k-touch-scrollbar, .k-treeview .k-in, .k-upload, .k-window, .k-window-action, .k-window-titleless .k-window-content {
border-radius: 13px
}
Hi,
When using the dropdown tree on safari using the bootstrap themes when the page has scrollbars and clicking on the dropdown the page scrolls up, even though there is available space:
Please see this Dojo which replicates the issue:
https://runner.telerik.io/fullscreen/uwoBEKiT/2
Open the above URL in Safari, chick on the dropddown and the page scrolls up and the dropdown is no longer visible.
Regards
James Qu
inn
Hi Team,
It's an issue in keyboard navigation support for DropDown Tree, where am not able to scroll to the end node. Given the scenario in below link
https://dojo.telerik.com/IROwUrot
Am using 2019.2.619 version.
Regards,
Minati
Context:
- Load on demand enabled
- Check Children is set true
- Remote api call to load data.
- Attached sample code is using kendo services.
Issue or Scenario:
When you select the top node or checkbox, it shows 1 item(s) selected. However, when you expand and deselect child nodes or checboxes, the single tag message will removed and blank field is present.
please find below code and attached gif file, these files will give you clear understanding on the issue with dropdowntree.
<!--BELOW IS THE CODE SAMPLE ON THIS BUG -->
<!DOCTYPE html>
<html>
<head>
<base href="https://demos.telerik.com/kendo-ui/dropdowntree/remote-data-binding">
<style>html { font-size: 14px; font-family: Arial, Helvetica, sans-serif; }</style>
<title></title>
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.common-material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.material.min.css" />
<link rel="stylesheet" href="https://kendo.cdn.telerik.com/2019.2.514/styles/kendo.material.mobile.min.css" />
<script src="https://kendo.cdn.telerik.com/2019.2.514/js/jquery.min.js"></script>
<script src="https://kendo.cdn.telerik.com/2019.2.514/js/kendo.all.min.js"></script>
</head>
<body>
<div id="example">
<div class="demo-section k-content">
<input id="dropdowntree" style="width: 100%;" />
</div>
<script>
var serviceRoot = "https://demos.telerik.com/kendo-ui/service";
homogeneous = new kendo.data.HierarchicalDataSource({
transport: {
read: {
url: serviceRoot + "/Employees",
dataType: "jsonp"
}
},
schema: {
model: {
id: "EmployeeId",
hasChildren: "HasEmployees"
}
}
});
$("#dropdowntree").kendoDropDownTree({
placeholder: "Select ...",
dataSource: homogeneous,
height: "auto",
checkboxes: { checkChildren: true },
dataTextField: "FullName",
clearButton: true,
checkAll: false,
autoClose: false,
tagMode: "single",
loadOnDemand: true
});
</script>
</div>
</body>
</html>
I use the below template to render nodes (so that root nodes do not have a checkbox), but when I click checkAll button the root node(s) content are also displayed as selected
You should provide an event to custom handle this behavior and ignore nodes unselectable
.Checkboxes(setting => setting
.CheckChildren(true)
.Template("# if (item.level() > 0) { #" +
"<input type='checkbox' #= item.checked ? 'checked' : '' #>" +
"# item.text = item.SymptomName #" +
"#}else{#" +
"# item.text = item.LocationName #" +
"#}#"
)
)
Keep up the awesome work !