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Enable/Disable Grid scrolling

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Kaleem Khan
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Kaleem Khan asked on 04 Jan 2010, 09:43 PM
I have a jQuery contextMenu in my Grid upon right click. When right clicked on a row and menu displayed, I want to disable Grid scrolling and enable when Menu is gone. Is there any client side function to diable scrolling?

Further, it would be nice to have a link to any client side API documentation for MVC controls.

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Atanas Korchev
Telerik team
answered on 05 Jan 2010, 08:27 AM
Hi Kaleem Khan,

There is currently no public API for enabling and disabling grid scrolling. However it is easy to achieve the same using the following JavaScript code:

<script type="text/javascript">
function notScrollable() {
     var $grid = $('#Grid');
      
     $grid.find('.t-grid-content')
             .css({overflow:'visible', height:'auto'})
          .end()
          .find('.t-grid-header')
             .css('paddingRight', 0)
             .find('th:last')
                 .removeClass('t-last-header')
             .end()
          .end()
          .find('table')
             .css('borderStyle', 'none');
}
 
function scrollable() {
     var $grid = $('#Grid');
      
     $grid.find('.t-grid-content')
             .css({overflow:'auto', height:'200px'})
          .end()
          .find('.t-grid-header')
             .css('paddingRight', '18px')
             .find('th:last')
                 .addClass('t-last-header')
             .end()
          .end()
          .find('table')
             .css('borderStyle', 'solid');
}
</script>

Replace '#Grid' with the Name of your grid (don't forget the # at the beginning).

The Client API is listed in a section with the same name e.g.:

http://www.telerik.com/help/aspnet-mvc/telerik-ui-components-grid-client-api.html

Regards,
Atanas Korchev
the Telerik team

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Kaleem Khan
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answered on 05 Jan 2010, 05:08 PM
Hi Atanas,

I tried these function but didn't change anything. Is it because my Grid is binding server side?

Thanks.
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Georgi Krustev
Telerik team
answered on 07 Jan 2010, 02:03 PM
Hi Kaleem Khan,

Could you please post your current implementation? Thus we will observe it and advice you further.

Kind regards,
Georgi Krustev
the Telerik team

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Kaleem Khan
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answered on 07 Jan 2010, 02:46 PM
Hi, Here is the Grid code:

 <%Html.Telerik().TabStrip()  
           .Name("TabStrip")  
           .HtmlAttributes(new { style = "width:700px; float:right;" })  
           .Items(tabstrip => 
               {  
                   tabstrip.Add()  
                       .Text("Categories")  
                       .Content(() => Html.Telerik().Grid<Core.Domain.Category>(Model)                                                      
                                                    .Name("Grid")                                                      
                                                    .HtmlAttributes(new { style = "width:100%; font-size:8pt"id = "commGrid" })  
                                                    .RowAction(row => { row.HtmlAttributes.Add("class", "communityRow");   
                                                                        row.HtmlAttributes.Add("id", row.DataItem.ID );                                                           
                                                                      }  
                                                              )                                                      
                                                    .Columns(columns =>   
                                                                      {     
                                                                          columns.Add(c => 
                                                                                              {%><img src="<%=Url.Content("../../../Content/Images/folder_closed.png") %>/> 
                                                                                             <%=Html.ActionLink(c.Description, "Index", "Home", new { id = c.ID }, null)%> 
                                                                                           <% }  
                                                                                          ).Width(200)  
                                                                                          .Title("Description");                                                                            
                                                                          columns.Add(c => 
                                                                                          {%><img src="<%=Url.Content("../../../Content/Images/feed-icon.gif") %>"/> 
                                                                                           <%   
}  
                                                                                      )  
                                                                                       .Title("Feed");  
                                                                          columns.Add(c => c.CategoryStatistics.TopicCount).Title("Topics");  
                                                                          columns.Add(c => c.CategoryStatistics.LastMessageDate).Title("Last Post");  
                                                                      }  
                                                            )  
                                                    .ClientEvents(events => events.OnLoad("onLoad"))  
                                                    .Sortable()  
                            .Scrollable(scrolling => scrolling.Height(250))   
                            .Pageable()  
                            .Render()  
                                           );  
                   tabstrip.Add()  
                       .Text("Recent Content")  
                       .Content(() => Html.Telerik().Grid<Core.Domain.Category>(Model)  
                              .Name("Grid2")  
                                      .HtmlAttributes(new { style = "width:100%; font-size:8pt" })  
                              .Columns(columns => 
                                      {  
                                          columns.Add(c => 
                                          {%><img src="<%=Url.Content("../../../Content/Images/folder_closed.png") %>/> 
                                           <%=Html.ActionLink(c.Description, "Index", "Home", new { id = c.ID }, null)%> 
                                           <% }).Width(200)  
                                       .Title("Description");  
                                          columns.Add(c => 
                                          {%><img src="<%=Url.Content("../../../Content/Images/feed-icon.gif")%>/> 
                                           <% }).Title("Feed");  
                                       columns.Add(c => c.CategoryStatistics.TopicCount).Title("Topics");  
                                       columns.Add(c => c.CategoryStatistics.LastMessageDate).Title("Last Post");  
                                      }).Sortable()  
                            .Scrollable(scrolling => scrolling.Height(200))  
                            .Pageable()  
                            .Render());  
                   tabstrip.Add()  
                       .Text("Your Recent Content")  
                       .Content(() => {%> 
                          
                    <% });  
 
               }  
        ).SelectedIndex(0)  
         .Render(); %> 
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Atanas Korchev
Telerik team
answered on 07 Jan 2010, 02:56 PM
Hi Kaleem Khan,

The two JavaScript functions need to be executed to make the grid scrollable or not. I don't see in your code when you are invoking them. For your convenience I have attached a sample application showing how to enable/disable scrolling.

Regards,
Atanas Korchev
the Telerik team

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Andrew
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answered on 26 Apr 2012, 06:48 PM
could you provide the same "scrollable" and "nonScrollable" javascript functions for doing the same in a RadTreeView?
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Dimo
Telerik team
answered on 27 Apr 2012, 09:04 AM
Hi Andrew,

In the case of the MVC TreeView (it is not called RadTreeView), the approach is a lot simpler, because there is no unique HTML output required for the scrollable and non-scrollable mode. You can simply apply or remove the width/height of the component's wrapper (div.t-treeview). An overflow:auto style needs to be applied when dimensions are set, but you can also leave it for both cases.

All the best,
Dimo
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Kaleem Khan
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Answers by
Atanas Korchev
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Kaleem Khan
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Georgi Krustev
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Andrew
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Dimo
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