onItemRequest - event of the PmfTree object

Description:

The event is triggered with request to create subitems for dynamic tree item.

Parameters:

ev.SrcObject	(Object) Pmf object where the event originated.
ev.Item	(Object) Tree item (PmfTreeItem object) for which the request to create subitems was made.

Note:

This event is is functional only in JavaScript language.
The event is triggered when the dynamic tree item (see RequestType) is expanded by mouse, keyboard, or by calling the methods GetItem and SetExpanded.
This event is not triggered when the dynamic tree item is expanded by calling the methods SetSel or SetVisible.

Example:

Script for example in the onFormLoad event of the PmgForm object:

JavaScriptSelect and copy to clipboard



var oForm = pMe.Form;

var oTree = oForm.CreateItem("tree", "id_tree1");

var oRoot = oTree.TreeRoot;

oRoot.CreateItem("item1", null, "RequestType:1;");

oRoot.CreateItem("item2", null, "RequestType:1;");

// ... Additional tree settings


// The function is registered into the onItemRequest event.

function onTreeItemRequest(ev)

{

	// If the dynamic tree item was not filled, then GetItemCount method returns the -1 value.

	if (ev.Item.GetItemCount() < 0)

	{

		ev.Item.CreateItem("subitem", null, "RequestType:1;");

		Pm.Debug("PmfTree.onItemRequest TreeItemId=" + ev.Item.Id);

	}

}

oTree.AddEvent("onItemRequest", "Id_Request", onTreeItemRequest);