How do I grab items beyond the currently defined "$('#listview').data('kendoMobileListView').dataSource.data()"?

I'm writing a feature to do a batch action with selected items of a mobile listview. The kendo.data.Datasource has data loaded in remotely, and we define the following:

serverPaging: true,
pageSize: 10

The schema.total in my test case is 55. Each dataItem has a property 'Select' that has defaultValue: undefined, and is set to true/false defined by whether user selects or de-selects the item on click. I want to avoid having to create a list to hold objects and add/remove items based on whether a user selects/deselects said items, which is why i wanted to just toggle this property back and forth on click. I want the user to be able to scroll through all 55 items and select items as desired. I also want to do a 'select all' feature where the all items on the listview are selected/deselected and also allow individual toggling post 'select/de-select all' with the same 'Select' property modification in mind. Then only when the user selects to do the batch action, detect all dataItem's Select value and send those items to the function that handles the batch action.

My observations (correct me if I'm wrong):

(var dataItemList = $('#listview').data('kendoMobileListView').dataSource.data() for the purpose of brevity)

1)  dataItemList is redefined every 1/2 pageSize. So initial list is dataItemList[0] thru dataItemList[9], then next time it is defined (the return value of $('#listview').data('kendoMobileListView').dataSource.data()), it's dataItemList[5] thru dataItemList[14] (obviously where dataItemList[5] is at index 0 and dataItemList[14] is at index 9 of the new list), and so on...

2) property modifications of an item in dataItemList are retained, even after dataItemList is redefined. This leads me to believe all items in the datasource are saved somewhere and I just don't know how to access it. For example if i set dataItemList[0].Select = true, then scroll to a point on the list where dataItemList[0] isn't on dataItemList, then scroll back (so I can read it's properties), dataItemList[0].Select == true versus the default 'undefined' value.

3) I can save items to a manually generated object with key-value pair and use the key to remove or add the object to the list when a click is detected, or if the 'select all' button is clicked, load in new items to the list with itemChange event, but this will be a clumsy implementation at best for the manual select/deselect functionality post-'select all' for items outside of ones currently represented by dataItemList.

To clarify on my question:

I want to access those dataItems on the kendoMobileListView that aren't returned by dataSource.data(), but I have to keep virtual scrolling and the datasource is loaded from a remote source. Is this possible? If so, how?

Let me know if you need further clarification/example. Thanks in advance.

Hello,

I have a grid that supports a model.  But I want to generate different columns renderings depending on a value selected.
eg.
One time the value column needs to be a text box, numeric text box, color selector.

I've managed to do so with everything in java script.  But now I want to move the column definition into my database and return a json array butI'm facing one problem and that is the editor property.

The grid is generated if I leave all the editor properties empty.  But when I want to use one the grid isn't generated and I'm not getting any javascript errors.
(The editors exists)

This is what my service is returning:
[{"field":"ValidFrom","title":"Valid from","width":"75px","format":"{0:dd/MM/yyyy}"},{"field":"ValidTo","title":"Valid to","width":"75px","format":"{0:dd/MM/yyyy}"},{"field":"Item","title":"Retailer loyalty score","width":"125px"},{"field":"Value","title":"Color","width":"75px","editor":colorEditor,"template":"<div style='background-color: #=Value#;'>&nbsp;</div>"},{"field":"RangeMin","title":"Min score","width":"75px"},{"field":"RangeMax","title":"Max score","width":"75px"},{"field":"Active","title":"Active","width":"50px","editor":customActiveEditor,"attributes":{"style":"text-align: center"},"template":"<div align=center><input style=\"display:none;\" id=\"Active_#=RuleID#\"   type=\"checkbox\" #= Active ? \"checked='checked'\" : '' # class=\"k-checkbox chbxItem\"  /><label class=\"k-checkbox-label\" for=\"Active_#=RuleID#\"</label></div>\r\n"}]

Hi,

I use the following Code "grid.expandRow(grid.tbody.find("tr.k-master-row"));" to expand all rows and it works but it takes some time ( a few seconds)

so I thought I use kendo.ui.progress to show the grid progress indicator during the expansion - but this doesn't work...
what I'm doing wrong?
how to show the progress indicator from/in the grid if a longer progress is taken place?
robert

Hi, I am kind of new in Kendo UI for Angular 2 and i wish to call a web service when a Tab is selected so i can fetch data to fill in the Tab Contents.

Is there a way to call or invoke a method when a Tab is selected?

I'm attempting to build a template for days in `month` view using view.dayTemplate. The reason I'm doing this is so that I can add a piece of text at the top right of each day showing the number of tasks in that day. Is there a method of accessing the number of events listed for a given day?

Here is my desired template:

Do we need to use kendo.common.css before kendo.default-v2.css ?

Because when I use them there are many bugs...

Simple example on screenshot.

I've set columns editor for the column "itpt_name" but after grid.setOptions it is broken

Here is the example http://dojo.telerik.com/EjIlI

You need to follow these steps to reproduse

1) Open http://dojo.telerik.com/EjIlI

2) Click "Run"

3) Double click in any Cell in column "Партия" (you can see working custom editor with the broken images, it is normal)

4) Set sorting for the column "Партия"

5) Save state using "Save state" button

6) Ctrl+F5

7) Load saved state

8) Double click in any Cell in column "Партия" (custom editor is broken, it is not normal)

 Please advise why custom editor is broken

Hello

Is it possible to toggle panel also when visible (wide screen). Running manually close/open is not doing anything. And I would like to be able close (manually) panel, then show it, also on wide screen.