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10 answers
1.0K+ views
Hi,

I am using version 2013.2.716 of kendo dataviz and I have a chart with several series in it that is based on quite a large volume of data (approximately 1000 points in total). It takes anything up to 5 seconds to render and the UI is unresponsive while this is taking place.

Are there any events for the chart to signify pre and post render? Something along the lines of requestStart/requestEnd that you have for a data source?

Also, Is there anything that can be done in terms of the UI becoming unresponsive while the chart is being rendered? I have seen that in your roadmap that you are looking at performance improvements which would be great.

Thanks

Chris

Tom
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 answered on 31 May 2018
5 answers
237 views

Hi,

Is it possible to configure the "HorizontalSeparation" between diagram elements (shapes) for every diagram level?

If parent diagram element is wide and all it's childs are not so wide, then parent elements are overlapping.

Example with this problem can be found here: https://dojo.telerik.com/erAFiwIB/2

Konstantin Dikov
Telerik team
 answered on 31 May 2018
1 answer
105 views

Hello!

I would like to display the chart every 2,000 ms (with animation).

Is there a way?

Stefan
Telerik team
 answered on 31 May 2018
1 answer
1.5K+ views

Hi Team,

I am using attribute for column definition like below and giving class for entire column. But not getting how to give cell class based on condition like for index 3 I wanted class for particular column cell.

attributes: { "class": "my-class"},

 

Thanks in Advance,

Jose

Stefan
Telerik team
 answered on 31 May 2018
7 answers
3.1K+ views
Hi.  This has got to be very simple but it's driving me nuts.  Setting the theme of the Kendo controls is quite simple by adding the corresponding CSS to the page (links in head), and I've messed around with the theme selector to change the theme at runtime (works great), but what if I want to set the theme of a specific control without affecting the rest of the controls?  E.G.: What if I'd like the general theme to be "black", setting that in the BundleConfig of the MVC app, but I want the grid on a specific page to be "default" without affecting the other controls such as the menu.

Is there a way to set the theme for a specific control?  IE:
$("#Grid").kendoGrid({
    magicalThemePropertyThatDoesntExist: default;

Thanks,
-tom
Preslav
Telerik team
 answered on 30 May 2018
2 answers
728 views

Is it possible to affect data asynchronicaly (ajax) that is used by kendo.observable object?

With below code `cart.add()` function is triggered and `cart.contents` variable is updated, but this not affect the template and not refreshing data used by template. I'm expecting that changing cart.contents changes data used by template, like text: quantity and text: itemPrice

template script 1:

    <script type="text/x-kendo-template" id="cart-preview-template">
      <div id="shop-info" data-bind="attr: { class: cartContentsClass }">
        <ul data-role="listview" data-bind="source: cart.contents" data-template="cart-item" id="shop-list"></ul>
            <div id="shopping-cart">
                <p class="total-price" data-bind="html: totalPrice"></p>
                <a id="empty-cart" href="#" data-bind="click: emptyCart">empty cart</a>
            </div>
        </div>
    </script>


template script 2:

    <script type="text/x-kendo-template" id="cart-item">
        <li class="selected-products-list">
            <a data-bind="click: removeFromCart" class="view-selected-items">
                <img data-bind="attr: { src: imageSource, alt: imageAlt }"
                />
            </a>
                <span data-bind="text: quantity"></span>
                <span data-bind="text: itemPrice"></span>
            </span>
        </li>
    </script>


model:

    var cartPreviewModel = kendo.observable({
                    cart: cart,
    
                    cartContentsClass: function () {
                        return this.cart.contentsCount() > 0 ? "active" : "empty";
                    },
    
                    removeFromCart: function (e) {
                        this.get("cart").remove(e.data);
                    },
    
                    emptyCart: function () {
                        cart.empty();
                    },
    
                    itemPrice: function (cartItem) {
                        return kendo.format("{0:c}", cartItem.item.unitPrice);
                    },
    
                    imageSource: function (cartItem) {
                        var baseUrl = "{{ absolute_url(asset('images/products/')) }}";
                        return baseUrl + cartItem.item.image;
                    },
    
                    imageAlt: function () {
                        return "Product image";
                    },
    
                    totalPrice: function () {
                        return this.get("cart").total();
                    },
                });


cart - object observable used by above cartPreviewModel :

            var cart = kendo.observable({
                contents: [{"item":"productID":1,"unitPrice":"111.00","image":"5.jpg"},"quantity":1}], 
                add: function (item) {
                    $.ajax({
                        type: 'POST',
                        url: '{{ path('add_product') }}',
                        dataType: 'json',
                        data: {'item': JSON.stringify(item)},
                        success: function (cart) {
                            // original code: 
                            // this.contents = cart;

                            // code for testing:
                            this.contents = [{"item":{"productID":1,"unitPrice":"111.00","image":"5.jpg"},"quantity":1},{"item":{"productID":2,"unitPrice":"999.00","image":"8.jpg"},"quantity":1}];
                        },
                    });

                },



binding model and template:

    kendo.bind($("#shop-info"), cartPreviewModel);

Once again, With above code `cart.add()` function is triggered and `cart.contents` variable is updated but this not affect the template and not refreshing data used by template. 

Ivan Danchev
Telerik team
 answered on 30 May 2018
4 answers
410 views

Hi Team,

I am using column menu in grid toolbar and storing column state on local-storage. Whenever page reload I am getting the grid options from local storage using below code.

var grid = $("#myGrid").data("kendoGrid");
var options = localStorage.getItem("kendo-grid-myGrid");
if (options) {
    grid.setOptions(JSON.parse(options));
}

I am using row editable as popup with template. In this template I am using some kendo drodpdown and a custom window scroll.

Once the setOptions called drop drown source and window scroll is not working. Any help on this.

 

Thanks in Advance

Jose

Jose
Top achievements
Rank 1
 answered on 30 May 2018
1 answer
117 views
Hi
I'm using Kendo scheduler for my application. I'm using a custom button for skipping a particular number of days, but after calling my service function and on calling the setDataSource()  I'm getting the error.

My code goes something like this 

service.getEvent(startDate,endDate).then(function(response){
     $scope.event=response;
 
   $scope.scheduler.setDataSource({
    data:$scope.event,
    schema:getSchema
  });
});

 

I'm able to get the response , the error occurs in $scope.scheduler.setDataSource() 

The current version I'm using is 
jquery- 3.1.1
angularjs - 1.7.0
kendo-ui- 2018.2.516

Nithin
Top achievements
Rank 1
 answered on 30 May 2018
8 answers
2.1K+ views

Hi,

1. Is Bootstrap 4 officially supported for Kendo UI for JQuery? If not, is there an official page where I can track if/when it will be supported?

2. If it is supported, is there a guide on what files (CSS/JS) need to be included in order to upgrade to Bootstrap 4?

Ivan Zhekov
Telerik team
 answered on 29 May 2018
6 answers
1.6K+ views
Kendo Grid Filtering doesn't work with paging

          Filter works in page1 but once we move to page 2 or 5 .... and apply filtering , filters doesn't work. Kendo Grid results into an empty data. how could this be resolved.


                Thanks in advance
Martin
Top achievements
Rank 1
 answered on 29 May 2018
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