SelectedItemChangingEventArgs Constructor

Initializes a new instance of the SelectedItemChangingEventArgs class.

Namespace: MindFusion.Common.UI
File: EventArgs.js

 Syntax

JavaScript

function SelectedItemChangingEventArgs (oldItem, newItem)

 Parameters

oldItem

ListItem. The selected item before the change.

newItem

ListItem. The new selected item.

 Example

The following code creates a new TabControl and handles its selectedItemChanging event.

JavaScript

// create a new instance of the TabControl control
var tabControl = new ui.TabControl(document.getElementById("tabcontrol"));
tabControl.width = tabControl.height = new ui.Unit(100, ui.UnitType.Percent);
tabControl.tabStripSize = new ui.Unit(100, ui.UnitType.Pixel);
tabControl.theme = "standard";
var tab = new ui.TabPage("«");
tab.header.size = new ui.Unit(20);
tab.header.interactive = false;
tab.header.tooltip = "Previous Tab";
tab.data = -1;
tab.navigateUrl = "products.html";
tab.templateUrl = "Window1.html";
tab.allowClose = false;tabControl.tabs.add(tab);
tabControl.selectedItemChanging.addEventListener(tabControlEventHandler);
function tabControlEventHandler(sender, args)
{
 if(args.oldItem.data == 1")
 {
      //do something
 } 
}