Bug report

If a date is configured in Gantt by using the date method or views.date configuration and then a task is edited, the Gantt displays the initial date after editing a task.

Reproduction of the problem

1. Open the Dojo
2. Scroll horizontally and edit a task (for example 'Architecture')

Current behavior

After the task is edited the horizontal scroll position is set to its initial position, not to a position according to the edited task. Thus, the user needs to scroll again in order to find the edited task.
The behavior is not the same when the date method/configuration is not used. Also, the behavior is not the same if we first switch between the 'Day', 'Week', 'Month' views before editing a task.

Expected/desired behavior

Even if the initial date of the Gantt is configured, when the user edits a task, the date should not be persisted. The horizontal scroll should be in the same position as before editing a task.

Environment

• Kendo UI version: 2021.3.1109
• Browser: [all ]

Bug report

When the validation message appears that the Start Date should be before the End Date, picking a proper End Date does not automatically remove the validation message in the Gantt.

Workaround: call the validate method in the change event of the End DatePicker.
https://dojo.telerik.com/@martin.tabakov@progress.com/IQiRukIN/11

Reproduction of the problem

1. Open this Dojo example - https://dojo.telerik.com/@martin.tabakov@progress.com/IQiRukIN/10
2. Edit an existing task or create a new one.
3. In the Start DatePicker, choose a date that is after the EndDate, so that the validation message would appear.
4. Pick an EndDate that is after the StartDate.

Current behavior

The validation message remains and the user must again focus and blur the Start Date picker for the message to disappear.

Expected/desired behavior

The validation should be removed automatically after picking a EndDate that is after the StartDate.

Environment

• Kendo UI version: 2021.3.914
• Browser: [all]

Bug report

When there are tasks with duration only in non-working days and showWorkDays is enabled Gantt displays unnecessary arrows for those tasks.
A similar issue appears also in case there are tasks with resources. In case the task's duration is only on non-working days the text of the resource still appears although showWorkDays is enabled.

Reproduction of the problem

1. Open Dojo and the Dojo with resources - https://dojo.telerik.com/@NeliKondova/IKUnuRec

Current behavior

When showWorkDays is enabled, the tasks with duration only in non-working days are not visible. However, unnecessary arrows for dependency tasks and text of the resources are displayed.

Expected/desired behavior

When showing only working days is enabled there should be no arrows for the tasks with dependencies and no resources text on non-working days

Environment

• Kendo UI version: 2021.2.616
• Browser: [all ]

Hi!

For small tasks delete button overlaps a button for creating dependencies. How can we fix this behaviour?

Hi folks,

I am using the Gantt control and somtimes, I correctly do not have any data to show in it.

In this case, in the left-side of the Gantt (which is technically a Grid), the message "No records to display" is shown.

Since I am using Kendo with kendo.culture('de-CH') (Swiss German) and also the Swiss German messages, I would expect the message to be translated there as well.

Especially, when I am looking into the messages-file (https://kendo.cdn.telerik.com/2021.1.330/js/messages/kendo.messages.de-CH.min.js) and it does in fact contain the translation for the Grid's noRecords. And it's also there in the JavaScript code when having the Swiss German culture loaded:

console.log(kendo.ui.Grid.prototype.options.messages.noRecords);

Could you please have a look at this and make the Gantt component respect the translations?

For better illustration, I have prepared the following Dojo, that uses Swiss German culture and displays an empty Gantt chart: https://dojo.telerik.com/iXuKeYaZ

As I ran into this problem while using Telerik for ASP.NET Core, I am looking forward to a solution that that works there too.

Thanks in advance!

Kind regards,

Janick

I would like to be able to toggle the planned vs actual view on Gantt outside of the Gantt toolbar. This can be achieved using private methods as in the example below and the Dojo linked here:

```

function changeValue(){
          var gantt = $('#gantt').data('kendoGantt')
          var timeline = gantt.timeline;

          var showPlanned = $('#gantt input.k-gantt-planned-switch').data('kendoSwitch').check()
          $('#gantt input.k-gantt-planned-switch').data('kendoSwitch').check(!showPlanned)

          gantt.wrapper.toggleClass("k-gantt-planned");
          timeline._setPlanned(!timeline.options.showPlannedTasks);
          timeline._render(gantt.dataSource.taskTree());
          timeline._renderDependencies(gantt.dependencies.view());
 }

```

However, having a public method for showing the planned tasks (for example showPlannedTasks(true) ) would be very helpful.

Hi, 

I use a Gantt chart like this one. 

<script>
  $("#gantt").kendoGantt({
  dataSource: [{
    id: 1,
    orderId: 0,
    parentId: null,
    title: "Task1",
    start: new Date("2021/6/1"),
    end: new Date("2021/6/3")
  }],
  range: {
    start: new Date("2021/05/31"),
    end: new Date("2021/12/01")
  },
  views: ["month"]
});

In the example, the Gantt chart starts on May 31, 2021.
In the first header line we see the month of May, followed by July. There is no month of June.

https://dojo.telerik.com/@lydbell/ULAPUdOV

This only happens when the last day of the month is Monday .

We have many tasks, and rendering in gantt so slowly. If use Pager with datasource, gantt show items on level 2 and above.
Please, add virtualization + virtual scroll in gantt control

Bug report

When planned tasks are displayed and rowHeight is set to the Gantt, the dependency lines are displayed incorrectly

Reproduction of the problem

1. Open the Dojo

Current behavior

Dependency lines are misplaced

Expected/desired behavior

The dependency lines should be rendered on the correct position

Workaround

Set the padding-top to '.k-task-wrap' elements
Dojo

Environment

• Kendo UI version: 2022.1.224
• Browser: [all]

Delete Gantt dependency requires to click on it and press the delete key.

How can I delete it on a mobile device without a physical keyboard?

The current list of events associated with PDF creation of Gantt chart data is insufficient. In order to make this control production suitable the following PDF generation events/features would be needed:

1.- Ability to provide progress on the PDF file generation. Right now this can take minutes.

2.- Ability to cancel a PDF generation that is in progress. Right now this is not possible, but would be needed for lengthy operations.

In the Gantt control there should be events for expand/collapse to provide things like on-demand loading of subnodes for large project-trees

Would like to show column grouping for a few columns in the RaddGantt.

e.g.

• Planned Start and Planned End to be grouped under Planned
• Actual Start and Actual End to be grouped under Actual
• Financial Detail columns to be grouped under Task Financials

Also, would like to add to the query, how can I have the Gantt chart with the dates shown vertically as in the image attached. I don't want the Week or Month name coming in the grouping. Just dates in the timeline view.

Reference - Feature request submitted for RadGantt for ASP.NET AJAX

You can have thousands of lines (rows) of project data....you can't load the entire plan and scroll through it

Currently % complete calcs for summary tasks are based solely on the sum of % complete per child task / number of child tasks (x%+y%+z%)/3.   In this way, a small scale task of 1 or 2 days has a large impact on summary % complete whereas a large task of 60 days has a small impact.  Request is to add in weighting based on duration (end date - start date).

Hour Span should be allowed integer values instead of only number values(currently it takes the floor of any decimal value)

It would be great to have multiple column sort in Gantt view