[Solved] Dragging Below Only

[Shaunus]

Is there a way to ensure Clientside, that nodes have to exist above or below a node before they may be dropped?

example:

node a
---node a.1
------node a.1.1
node b
---node b.1
node c
node d

node a.1.1 may be dropped onto any node below it, but node c may not be dropped on any node but node d.

[Erjan Gavalji]

Hi Shaunus,

You can use the OnClientNodeDropping property to set a client-side event handler. The event handler should check the target node and cancel the event by setting args.set_cancel(true);

I hope this helps.

Kind regards,
Erjan Gavalji
the Telerik team

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[Shaunus]

Hi Erjan,

Thanks for your reply, however I am still unsure how to "check the target node" - whether it is below or above the source node in the tree.

[Atanas Korchev]

Hello Shaunus,

You can use the get_dropPosition() method of the event arguments to determine the position of the source node. Please refer to this help topic for more info.

Regards,
Albert
the Telerik team

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[Shaunus]

Hi Guys,

Please read my question carefully.

I am not dragging Nodes between eachother to identify whether they are below or above eachother. I am dragging Nodes on-top of eachother. This means I will always get a result of "over". Which still does not allow me to determine whether the Source Node is below or above the Destination Node.
How do I get around this?

In view of this, is there also a way to turn off "between Node dropping"?

Previously in your old treeview I noticed your nodes were identified by their parent nodes in an array delimited by an '|'. Which meant it Could just obtain the ID of the node and create my own functions. However your new structure does not have an ID of the same sort?

[Atanas Korchev]

Hello Shaunus,

Drag and drop between nodes is disabled by default. You could use the following JavaScript code to check if a node is a child of another node:

if ($telerik.isDescendant(parentNode.get_element(), childNode.get_element())
{
  //parentNode contains childNode

}

I hope this helps,
Albert
the Telerik team

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[Shaunus]

Been running through your javascript. Seems like I could possibly use
"eventArgs.get_destNode()._getHierarchicalIndex()" and "eventArgs.get_sourceNode()._getHierarchicalIndex()" and compare the two. After all they are delimited by a ":" However I will look at your suggestion too.

Thanks.